/* ARGMAX · Variant 5 — Bell, as a letter
   One sheet of paper on a light desk. Orange is spent on the tail of the
   curve and the Telegram button; everything else is ink. */
:root{
  --desk:#EEF0F3;--paper:#FFFFFF;--line:#E3E6EB;
  --ink:#1D2433;--ink-2:#4A5264;--muted:#737B8C;
  --accent:#FF6A13;--accent-dark:#D9540A;--tint:#F4F5F8;--ph:#6D5AE6;
  --sans:"Manrope",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--desk);color:var(--ink);font:500 18px/1.7 var(--sans);-webkit-font-smoothing:antialiased}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:3px}
.wrap{max-width:780px;margin-inline:auto;padding-inline:20px}
.skip{position:absolute;left:12px;top:-60px;z-index:50;background:var(--ink);color:#fff;padding:10px 14px;border-radius:6px;font:700 14px var(--sans)}
.skip:focus{top:12px}
.ph{text-decoration:underline dotted var(--ph);text-decoration-thickness:1.5px;text-underline-offset:4px;cursor:help}

/* header */
.site-header{padding-block:22px}
.header-row{display:flex;align-items:center;justify-content:space-between}
.logo{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font:800 21px/1 var(--sans);letter-spacing:-.02em;color:var(--ink)}
.logo .mark{width:28px;height:20px}
.mark-dot{fill:var(--accent)}
.lang{font:600 15px/1 var(--sans);color:var(--muted);text-decoration:none}
.lang:hover{color:var(--ink)}

/* letter */
.letter{padding:64px 72px 56px;background:var(--paper);border-radius:4px;box-shadow:0 1px 2px rgba(29,36,51,.06),0 20px 50px -30px rgba(29,36,51,.25)}
.letter > p{margin:0 0 20px}
.greeting{font-weight:700}
.letter h2{margin:44px 0 16px;font:700 22px/1.3 var(--sans);letter-spacing:-.01em}
.letter h3{margin:0 0 6px;font:700 18px/1.4 var(--sans)}

.sketch{margin:30px -24px 34px;padding:24px 24px 16px;background:var(--tint);border-radius:4px}
.bell{display:block;width:100%;height:auto}
.bell .area{fill:#E4E7EE}
.bell .tail{fill:var(--accent)}
.bell .curve{stroke:var(--ink);stroke-width:2;stroke-linejoin:round}
.bell .axis{stroke:var(--ink);stroke-width:1.2}
.bell .label{fill:var(--ink-2);font:600 15px var(--sans)}
.bell .label-us{fill:var(--accent-dark);font-weight:700}
.bell .pointer{stroke:var(--accent-dark);stroke-width:1.5}
.bell .axis-label{fill:var(--muted);font:500 13.5px var(--sans)}
.sketch figcaption{margin-top:6px;font-size:14.5px;color:var(--muted)}

.list{margin:0 0 20px;padding-left:22px}
.list li{margin-bottom:8px}
.list li::marker{color:var(--accent)}

.table-wrap{overflow-x:auto}
.facts{width:100%;min-width:520px;border-collapse:collapse;font-size:16px;line-height:1.55}
.facts th,.facts td{padding:12px 16px 12px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.facts thead th{padding-top:0;font-weight:600;color:var(--muted)}
.facts tbody th{font-weight:700;white-space:nowrap}
.facts td{color:var(--ink-2)}

.stories{display:grid;gap:26px}
.story p{margin:0;color:var(--ink-2)}
.story .result{margin-top:6px;font-size:15.5px;color:var(--ink)}

.closing{margin-top:40px!important}
.sign{margin-top:28px}
.regards{margin:0 0 14px}
.sign-row{display:flex;align-items:center;gap:14px}
.sign-row p{margin:0;line-height:1.45}
.sign-row span{color:var(--muted);font-size:16px}
.avatar{display:grid;place-items:center;flex:none;width:56px;height:56px;border-radius:50%;background:var(--tint);object-fit:cover;font:700 17px/1 var(--sans);color:var(--muted)}
.avatar.is-ph{border:1.5px dashed var(--ph);color:var(--ph)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;margin-top:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 24px;border-radius:8px;font:700 16px/1.2 var(--sans);text-decoration:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark)}
.text-link{color:var(--ink);text-decoration-color:var(--accent);text-decoration-thickness:1.5px;text-underline-offset:4px}
.reply{margin:12px 0 0;font-size:15px;color:var(--muted)}
.ps{margin:40px 0 0!important;padding-top:22px;border-top:1px solid var(--line);color:var(--ink-2)}

/* release letter (argmax.team/hello) */
.no-numbers{color:var(--ink-2)}
.more{margin:28px 8px 0;font-size:16px}

/* after the letter */
.after{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px 32px;align-items:start;padding:36px 8px 8px;font-size:16px;color:var(--ink-2)}
.after > p{margin:0}
.testimonial{grid-column:1;padding:18px 20px;border-radius:4px;font-size:15.5px}
.testimonial-empty{border:1.5px dashed rgba(109,90,230,.4);color:var(--muted)}
.testimonial-empty p{margin:0}
.qr{grid-column:2;grid-row:1 / span 2;display:grid;justify-items:center;gap:8px;margin:0;max-width:140px;text-align:center;font-size:13.5px;color:var(--muted)}
.qr-box{display:grid;place-items:center;width:112px;height:112px;padding:8px;background:#fff;border-radius:6px;font:700 13px var(--sans);color:var(--muted)}
.qr-box svg{width:100%;height:100%}
.qr-empty .qr-box{background:transparent;border:1.5px dashed var(--ph);color:var(--ph)}

/* footer */
.site-footer{margin-top:56px;padding-block:32px 44px;border-top:1px solid #DDE0E6;font-size:14.5px}
.footer-row{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:32px;align-items:start}
.footer-brand{display:grid;gap:12px;justify-items:start}
.footer-brand p{margin:0;color:var(--muted)}
.footer-meta{display:flex;flex-direction:column;align-items:flex-end;gap:6px;color:var(--muted)}
.footer-meta a{text-decoration:none}
.footer-meta a:hover{color:var(--ink)}

/* responsive */
@media (max-width:720px){
  body{font-size:17px}
  .letter{padding:32px 22px 30px}
  .sketch{margin-inline:-10px;padding:14px 10px 10px}
  .bell .label{font-size:21px}
  .bell .axis-label{font-size:19px}
  /* the facts table turns into stacked rows on phones */
  .facts{min-width:0}
  .facts thead{display:none}
  .facts tr{display:block;padding:14px 0;border-bottom:1px solid var(--line)}
  .facts th,.facts td{display:block;padding:0;border:0}
  .facts tbody th{margin-bottom:6px}
  .facts td + td{margin-top:6px}
  .facts td::before{content:attr(data-label) ": ";color:var(--muted)}
  .after{grid-template-columns:minmax(0,1fr)}
  .qr{grid-column:1;grid-row:auto;justify-items:start;text-align:left;max-width:none}
  .footer-row{grid-template-columns:minmax(0,1fr)}
  .footer-meta{align-items:flex-start}
}
@media (max-width:400px){
  .wrap{padding-inline:12px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
}