/* knotjot.com: the public pages around the app. Same "Quiet Paper" palette as app/style.css. */
[hidden]{display:none!important}
:root{
  --bg:#f7f8fc;--bg-2:#eef0f8;--surface:#fff;
  --text-1:#1b1f2e;--text-2:#545b70;--text-3:#5b6277;
  --border:#e4e7f2;--border-strong:#d5d9e8;
  /* the same soft blue-to-lavender glow as the app's desk; none in dark */
  --glow:radial-gradient(1100px 560px at 20% -12%,#e3e8ff 0,transparent 60%),radial-gradient(900px 560px at 95% -5%,#f6e9ff 0,transparent 55%);
  --accent:#4f5bd5;--accent-text:#4350c4;--accent-ink:#fff;--accent-soft:#eceefd;--danger:#c8372d;
  --sh-1:0 1px 2px #1f1e1c0d,0 0 0 1px #1f1e1c0a;
  --sh-win:0 1px 0 #fff inset,0 30px 60px -20px #1f1e1c33,0 12px 24px -12px #1f1e1c1f,0 0 0 1px #1f1e1c14;
  --ui:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --display:"Iowan Old Style","Charter","Source Serif 4","Source Serif Pro","Palatino Linotype",Georgia,serif;
  --r:12px;--wrap:1120px;--ease:cubic-bezier(.2,0,0,1);
  color-scheme:light;
}
/* dark: the system setting, unless the visitor picked a theme (in the app or here; theme.js sets data-theme) */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --glow:none;--bg:#141416;--bg-2:#1a1a1d;--surface:#1f1f22;
    --text-1:#ebe9e4;--text-2:#a8a59e;--text-3:#8f8c85;
    --border:#2c2c30;--border-strong:#3c3c41;
    --accent:#9aa3f5;--accent-text:#9aa3f5;--accent-ink:#12152e;--accent-soft:#272b4a;--danger:#ff7b72;
    --sh-1:0 0 0 1px #ffffff0f;
    --sh-win:0 30px 60px -20px #000c,0 0 0 1px #ffffff14;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --glow:none;--bg:#141416;--bg-2:#1a1a1d;--surface:#1f1f22;
  --text-1:#ebe9e4;--text-2:#a8a59e;--text-3:#8f8c85;
  --border:#2c2c30;--border-strong:#3c3c41;
  --accent:#9aa3f5;--accent-text:#9aa3f5;--accent-ink:#12152e;--accent-soft:#272b4a;--danger:#ff7b72;
  --sh-1:0 0 0 1px #ffffff0f;
  --sh-win:0 30px 60px -20px #000c,0 0 0 1px #ffffff14;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--glow) no-repeat,var(--bg);color:var(--text-1);font:16px/1.6 var(--ui);-webkit-font-smoothing:antialiased;padding:0 20px}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;background:var(--surface);padding:8px 12px;z-index:20}

/* Top bar: a floating pill that sharpens once the page scrolls */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;padding-top:14px;background:linear-gradient(var(--bg) 60%,transparent)}
.nav .in{display:flex;align-items:center;gap:6px;max-width:var(--wrap);margin:0 auto;padding:7px 8px 7px 14px;border-radius:999px;
  background:color-mix(in srgb,var(--bg) 78%,transparent);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);
  border:1px solid transparent;transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.nav.scrolled .in{border-color:var(--border);box-shadow:0 6px 20px -12px #1f1e1c40}
.brand{display:flex;align-items:center;gap:9px;text-decoration:none;font-weight:600;letter-spacing:-.01em;margin-right:auto}
.brand img{width:22px;height:22px}
.nav a.l{text-decoration:none;color:var(--text-2);font-size:14.5px;padding:7px 12px;border-radius:999px}
.nav a.l:hover,.nav a.l[aria-current=page],.tt:hover{color:var(--text-1);background:color-mix(in srgb,var(--text-1) 6%,transparent)}
.tt{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border:0;border-radius:999px;background:none;color:var(--text-2);cursor:pointer;padding:0}
.tt svg{width:18px;height:18px;stroke:currentColor;stroke-width:1.75;fill:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:500 15px/1 var(--ui);text-decoration:none;cursor:pointer;
  border-radius:999px;padding:12px 20px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text-1);transition:transform .15s var(--ease),background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--text-1);color:var(--bg);border-color:var(--text-1)}
.btn.sm{padding:9px 15px;font-size:14px}
.btn svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* Hero */
.hero{text-align:center;padding:40px 0 12px}
h1,h2{text-wrap:balance;font-family:var(--display);font-weight:500;letter-spacing:-.025em;line-height:1.04;margin:0}
h1{font-size:clamp(42px,7.4vw,84px);margin:22px auto 0;max-width:13ch}
h1 em,h2 em{font-style:italic;color:var(--accent)}
.lede{font-size:clamp(17px,2vw,20px);color:var(--text-2);max-width:36em;margin:20px auto 0;line-height:1.55}
.moat{font-size:15px;color:var(--text-2);max-width:36em;margin:16px auto 0;line-height:1.55}
.ctas{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:28px}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 22px;list-style:none;padding:0;margin:26px 0 0;font-size:14px;color:var(--text-3)}
.trust li{display:flex;align-items:center;gap:7px}
.trust svg{width:15px;height:15px;stroke:var(--accent);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* The live app, in a window */
.try{position:relative;margin:24px auto 0;max-width:var(--wrap)}
.try .hint{font-size:13.5px;color:var(--text-2);margin:0 0 12px;text-align:center;text-wrap:balance}
.try .hint .touch{display:none}
.try .hint kbd{font:500 12px var(--ui);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;padding:1px 5px;background:var(--surface)}
.win{border-radius:16px;background:var(--surface);box-shadow:var(--sh-win);overflow:hidden}
.win .bar{display:flex;align-items:center;gap:10px;height:40px;padding:0 10px 0 14px;border-bottom:1px solid var(--border);background:var(--bg-2);font-size:13px;color:var(--text-3)}
.win .addr{flex:1;display:flex;justify-content:center}
.win .addr span{background:var(--surface);border:1px solid var(--border);border-radius:7px;padding:3px 14px;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.win .dots{display:flex;gap:6px}.win .dots i{width:10px;height:10px;border-radius:50%;background:var(--border-strong)}
.win .full{display:flex;align-items:center;gap:5px;color:var(--text-2);text-decoration:none;padding:4px 8px;border-radius:6px}
.win .full:hover{background:var(--surface);color:var(--text-1)}
.win .full svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.win iframe{display:block;width:100%;height:clamp(480px,72vh,760px);border:0;background:var(--surface)}

/* Sections */
section{padding:96px 0 0}
.kicker{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent-text);margin:0 0 14px}
h2{font-size:clamp(32px,4.6vw,52px);max-width:18ch}
.sub{color:var(--text-2);font-size:18px;max-width:38em;margin:16px 0 0;text-wrap:pretty}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px;margin-top:40px}
.card{background:var(--surface);border-radius:var(--r);box-shadow:var(--sh-1);padding:26px}
.card h3{font-size:17px;margin:14px 0 6px;letter-spacing:-.01em}
.card p{margin:0;color:var(--text-2);font-size:15px}
.ico{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent)}
.ico svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chips span{font-size:13px;border:1px solid var(--border);border-radius:999px;padding:3px 11px;color:var(--text-2);background:var(--bg)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.list{list-style:none;padding:0;margin:0;border-top:1px solid var(--border)}
.list li{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--border)}
.list b{display:block;font-weight:600}
.list span{color:var(--text-2);font-size:15px}
.list .n{font-family:var(--display);font-size:22px;color:var(--text-3);width:28px;flex:none;line-height:1.2}
details{border-bottom:1px solid var(--border);padding:4px 0}
details:first-of-type{border-top:1px solid var(--border)}
summary{cursor:pointer;list-style:none;padding:16px 32px 16px 0;font-weight:500;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;border:solid var(--text-3);border-width:0 1.8px 1.8px 0;transform:translateY(-70%) rotate(45deg);transition:transform .2s var(--ease)}
details[open] summary::after{transform:translateY(-30%) rotate(225deg)}
details p{margin:0 0 18px;color:var(--text-2);max-width:42em}
.end{text-align:center;padding:110px 0 30px}
.end h2{margin:0 auto}

/* Inner pages */
.page{max-width:720px;margin:0 auto;padding:72px 0 0}
.page h1{font-size:clamp(40px,6vw,64px);margin:0;max-width:none}
.page .lede{margin:18px 0 0}
.prose{margin-top:40px}
.prose h3{font-size:18px;margin:36px 0 8px}
.prose p,.prose li{color:var(--text-2)}
.prose strong{color:var(--text-1);font-weight:600}
.two{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:14px;margin-top:40px}
.two .card .btn{margin-top:18px}
/* sign in: the buttons people expect, answering "coming soon" when pressed */
.auth{margin-top:36px;max-width:400px;display:flex;flex-direction:column;gap:10px;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--sh-1)}
.auth-h{margin:0 0 4px;font-weight:600}
.btn.wide{width:100%}
.btn.wide svg{width:18px;height:18px}
.auth .btn.wide{color:var(--text-2);border-style:dashed}
.auth .btn.wide:hover{transform:none}
/* help: a table of contents and short sections */
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 0;padding:0;list-style:none}
.toc a{display:inline-block;font-size:14px;text-decoration:none;color:var(--text-2);border:1px solid var(--border);border-radius:999px;padding:6px 12px}
.toc a:hover{color:var(--text-1);border-color:var(--border-strong)}
.prose h2{font-size:clamp(26px,3.4vw,32px);margin:56px 0 10px;scroll-margin-top:90px;max-width:none}
.prose ol,.prose ul{padding-left:22px}
.prose li{margin:4px 0}
.ex{margin:14px 0}
.ex div{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:14px;color:var(--text-2);white-space:pre-line}
.ex div.mono{font-family:ui-monospace,Consolas,"Cascadia Mono",monospace;font-size:13px;white-space:pre;overflow-x:auto;color:var(--text-1)}
.ex div.rich{white-space:normal}
.ex div.rich p,.ex div.rich ul{margin:0 0 8px}
.ex div.rich ul{padding-left:18px}
.ex table{border-collapse:collapse;font-size:13px}
.ex th,.ex td{border:1px solid var(--border);padding:3px 8px;text-align:left}
.ex th{background:var(--hover,rgba(127,127,127,.08))}
.ex b{display:block;color:var(--text-1);font-size:12px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:6px}
kbd{font:12px var(--ui);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;padding:1px 5px;background:var(--surface)}
.tag{display:inline-block;font-size:12px;font-weight:500;color:var(--text-2);background:var(--bg-2);border:1px solid var(--border);border-radius:999px;padding:1px 9px;margin-left:6px;vertical-align:2px}
form.f{display:grid;gap:14px;margin-top:36px}
form.f label{display:grid;gap:6px;font-size:14px;font-weight:500}
form.f input,form.f textarea{font:16px var(--ui);color:var(--text-1);background:var(--surface);border:1px solid var(--border-strong);border-radius:10px;padding:12px 14px;width:100%}
form.f textarea{min-height:150px;resize:vertical}
form.f input:focus,form.f textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
form.f .row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
form.inline{display:flex;gap:8px;margin-top:16px;flex-wrap:wrap}
form.inline input{flex:1 1 200px;font:15px var(--ui);color:var(--text-1);background:var(--bg);border:1px solid var(--border-strong);border-radius:999px;padding:10px 16px}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.msg{font-size:14px;margin:0;color:var(--text-2)}.msg.err{color:var(--danger)}.msg.ok{color:#1e7d43}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .msg.ok{color:#6fd19a}}
:root[data-theme="dark"] .msg.ok{color:#6fd19a}

footer{margin-top:110px;border-top:1px solid var(--border);padding:28px 0 calc(28px + env(safe-area-inset-bottom,0px));font-size:14px;color:var(--text-3)}
footer .in{max-width:var(--wrap);margin:0 auto;display:flex;flex-wrap:wrap;gap:12px 24px;align-items:center}
footer nav{display:flex;gap:20px;flex-wrap:wrap;margin-left:auto}
footer a{text-decoration:none}footer a:hover{color:var(--text-1)}

@media (max-width:820px){
  .split{grid-template-columns:1fr;gap:32px}
  .nav a.l.wide{display:none}
}
@media (max-width:520px){
  body{padding:0 16px}
  .hero{padding-top:44px}
  .nav .in{padding-left:12px}
  .nav a.l{padding:7px 8px;min-height:44px;display:inline-flex;align-items:center}
  .nav a.l,.nav .btn{white-space:nowrap}
  .nav .brand span,.nav .brand b{font-size:15px}
  .nav .btn.sm{padding-inline:12px}
  .win .dots{display:none}
  .win iframe{height:72vh;min-height:440px}
  section{padding-top:72px}
}
@media (max-width:380px){.nav .btn.primary.sm{display:none}}
@media (hover:none){.try .hint .keys{display:none}.try .hint .touch{display:inline}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
.ctas.left{justify-content:flex-start;margin-top:36px}
.small{margin-top:32px;font-size:14px}
.msg.gap{margin-top:28px}.msg.gap-s{margin-top:10px}