:root{
  --bg:#eef1f5;--surface:#fff;--ink:#0e1726;--muted:#55627a;--line:#c9d1de;
  --accent:#2347f5;--on-accent:#fff;
  --amber:#8a5200;--amber-bg:#fff1d6;--red:#b4231a;--red-bg:#fde8e6;--ok:#1f6b3a;--ok-bg:#e3f3e9;
  --head:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0c111b;--surface:#151c2a;--ink:#e8edf7;--muted:#93a0b8;--line:#2a3447;
  --accent:#7c95ff;--on-accent:#0b1230;
  --amber:#ffc971;--amber-bg:#3a2a0c;--red:#ff9088;--red-bg:#3b1a18;--ok:#86d9a4;--ok-bg:#15301f;
}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.6 var(--body)}
a{color:var(--accent);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
p{max-width:62ch;margin:0 0 1em}
h1,h2,h3{font-family:var(--head);font-weight:700;letter-spacing:-.02em;margin:0}
h1{font-size:clamp(2.6rem,6.4vw,4.6rem);line-height:1.02;max-width:14ch}
h2{font-size:clamp(1.7rem,3.4vw,2.4rem);line-height:1.1;margin-bottom:.5em}
h3{font-size:1.125rem;letter-spacing:-.01em}
.lede{font-size:1.25rem;color:var(--muted);margin:20px 0 28px;max-width:46ch}

header.top{display:flex;justify-content:space-between;align-items:center;padding:20px 0}
.brand{font:700 1.2rem var(--head);letter-spacing:-.01em;color:var(--ink);text-decoration:none;display:flex;gap:10px;align-items:center}
.brand svg{width:26px;height:26px}
nav a{margin-left:20px;color:var(--ink)}

.btn{display:inline-block;padding:12px 20px;border-radius:10px;font-weight:600;text-decoration:none;border:2px solid var(--accent);margin:0 10px 10px 0}
.btn.primary{background:var(--accent);color:var(--on-accent)}
.btn.ghost{color:var(--accent)}

/* the ruler: the reminder schedule, made visible */
.ruler{list-style:none;margin:64px 0 8px;padding:0;display:grid;grid-template-columns:repeat(6,1fr)}
.ruler li{position:relative;padding:112px 12px 0 0}
.ruler li::before{content:"";position:absolute;left:0;right:0;top:84px;height:2px;background:var(--ink)}
.ruler li:last-child::before{background:linear-gradient(90deg,var(--ink),var(--red))}
.ruler li::after{content:"";position:absolute;left:0;top:75px;width:20px;height:20px;border-radius:50%;background:var(--bg);border:3px solid var(--ink)}
.ruler li:last-child::after{border-color:var(--red)}
.ruler b{display:block;font:700 1rem var(--head)}
.ruler span.d{display:block;font-size:.9rem;color:var(--muted);line-height:1.35;margin-top:2px}
.flag{position:absolute;left:0;top:6px;max-width:calc(100% - 8px);padding:6px 10px;border-radius:8px;font-size:.88rem;line-height:1.25;border:1.5px solid}
.flag::after{content:"";position:absolute;left:8px;top:100%;height:30px;width:2px;background:currentColor}
.flag strong{display:block;font-weight:700}
.flag.ok{color:var(--ok);background:var(--ok-bg)}
.flag.warn{color:var(--amber);background:var(--amber-bg)}
.flag.bad{color:var(--red);background:var(--red-bg)}
.note{color:var(--muted);font-size:.9rem;margin:0}

section{padding:72px 0 0}
section.hero{padding-top:40px}
.note.after{margin-top:14px}
.rows{margin:24px 0 0;padding:0;list-style:none;max-width:760px}
.rows li{display:grid;grid-template-columns:200px 1fr;gap:8px 24px;padding:16px 0;border-top:1px solid var(--line)}
.rows li:last-child{border-bottom:1px solid var(--line)}
.rows b{font:700 1.1rem var(--head)}
.rows p{margin:0;color:var(--muted)}

.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.steps{margin:0;padding:0;list-style:none;counter-reset:s}
.steps li{counter-increment:s;position:relative;padding:0 0 22px 44px}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--ink);color:var(--bg);font-weight:700;display:grid;place-items:center}
.steps p{margin:2px 0 0;color:var(--muted)}

.mail{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;max-width:440px}
.mail .hd{font-size:.85rem;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:10px;margin-bottom:14px}
.mail .hd b{color:var(--ink)}
.mail h3{font-size:1.4rem;margin:2px 0 6px}
.mail .k{color:var(--muted);font-size:.9rem;margin:0}
.mail .go{display:inline-block;background:var(--accent);color:var(--on-accent);padding:10px 14px;border-radius:8px;font-weight:600;margin-top:6px}
.mail small{display:block;color:var(--muted);margin-top:14px;font-size:.8rem;line-height:1.4}

.later{columns:2;column-gap:48px;max-width:640px;margin:20px 0 0;padding-left:1.1em}
.later li{margin-bottom:6px;break-inside:avoid}

.closing{margin-top:88px;padding:56px 0 64px;border-top:2px solid var(--ink)}
footer{padding:0 0 40px;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

@media (max-width:860px){
  .split{grid-template-columns:1fr;gap:32px}
  .ruler{grid-template-columns:1fr;margin-top:40px}
  .ruler li{padding:0 0 26px 44px}
  .ruler li::before{left:9px;right:auto;top:0;bottom:0;width:2px;height:auto}
  .ruler li:last-child::before{background:linear-gradient(var(--ink),var(--red));bottom:26px}
  .ruler li::after{left:0;top:2px}
  .flag{position:static;display:inline-block;margin-top:8px}
  .flag::after{display:none}
}
@media (max-width:620px){
  .rows li{grid-template-columns:1fr;gap:2px}
  .later{columns:1}
  nav a:not(.keep){display:none}
}
@media (prefers-reduced-motion:no-preference){
  @keyframes land{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
  .flag{animation:land .6s cubic-bezier(.2,.8,.2,1) both}
  .ruler li:nth-child(1) .flag{animation-delay:.25s}
  .ruler li:nth-child(2) .flag{animation-delay:.45s}
  .ruler li:nth-child(3) .flag{animation-delay:.65s}
  .ruler li:nth-child(6) .flag{animation-delay:.85s}
}