/* Neutral black and white, Newsreader for titles, Inter for everything else,
   pine green as the one sparing accent (links, focus, checked, copied). */
:root{
  --bg:#FFFFFF; --ink:#0A0A0A; --muted:#6B6B6B; --line:#E5E5E5; --fill:#F5F5F5;
  --btn:#0A0A0A; --btn-ink:#FFFFFF;
  --pine:#2c7a54; --pine-ink:#1c5f41; --on-pine:#FFFFFF; --spark:#e9a436; --err:#B42318;
  --serif:"Newsreader", Georgia, "Times New Roman", serif;
  --sans:"Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0A0A0A; --ink:#F5F5F5; --muted:#A3A3A3; --line:#262626; --fill:#171717;
    --btn:#F5F5F5; --btn-ink:#0A0A0A;
    --pine:#5bc391; --pine-ink:#86dcae; --on-pine:#07140d; --err:#F97066;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0A0A0A; --ink:#F5F5F5; --muted:#A3A3A3; --line:#262626; --fill:#171717;
  --btn:#F5F5F5; --btn-ink:#0A0A0A;
  --pine:#5bc391; --pine-ink:#86dcae; --on-pine:#07140d; --err:#F97066;
  color-scheme:dark;
}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;padding-bottom:env(safe-area-inset-bottom,0px)}
.wrap{max-width:680px;margin:0 auto;padding-inline:max(16px,env(safe-area-inset-left,0px))}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.012em;line-height:1.1;margin:0;text-wrap:balance;font-optical-sizing:auto}
h1{font-size:clamp(2.3rem,8.5vw,3.4rem)}
h1 em{font-style:italic;font-weight:500}
h2{font-size:clamp(1.7rem,6vw,2.2rem)}
h3{font-size:1.45rem}
p{margin:0}
a{color:var(--pine-ink);text-underline-offset:3px}
.eyebrow{font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
:focus-visible{outline:2px solid var(--pine);outline-offset:2px}

.top{display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding-block:calc(18px + env(safe-area-inset-top,0px)) 16px;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:600;font-size:1.05rem;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.mark{width:10px;height:10px;border-radius:50%;background:var(--ink);box-shadow:3px -3px 0 -1px var(--spark)}
.event{font-size:.8rem;color:var(--muted)}

main{display:flex;flex-direction:column;gap:32px;padding-block:44px 32px}
.hero{display:flex;flex-direction:column;gap:14px}
.lead{font-size:1.08rem;color:var(--muted);max-width:34em}

.card{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:22px}
form{display:flex;flex-direction:column;gap:18px}
.field{display:flex;flex-direction:column;gap:6px}
label{font-weight:600;font-size:.9rem}
.opt{font-weight:400;color:var(--muted)}
input[type=email],input[type=text]{font:inherit;font-size:1.02rem;color:var(--ink);background:var(--bg);
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;min-height:50px;width:100%}
input[type=email]:focus,input[type=text]:focus{border-color:var(--ink);outline:none}
input[type=email]:focus-visible,input[type=text]:focus-visible{outline:2px solid var(--pine);outline-offset:1px}
input[aria-invalid=true]{border-color:var(--err)}
.error{color:var(--err);font-size:.86rem}

.updates{border:0;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.updates legend{font-weight:600;font-size:.9rem;padding:0;margin-bottom:10px}
.check{display:grid;grid-template-columns:22px 1fr;gap:12px;align-items:start;cursor:pointer;
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-weight:400}
.check:has(input:checked){border-color:var(--pine)}
.check input{width:20px;height:20px;margin:1px 0 0;accent-color:var(--pine)}
.check b{display:block;font-weight:600;font-size:.95rem}
.check small{display:block;color:var(--muted);font-size:.88rem}

.primary{appearance:none;border:0;background:var(--btn);color:var(--btn-ink);font:inherit;font-weight:600;font-size:1rem;
  padding:14px 22px;border-radius:10px;min-height:52px;cursor:pointer;width:100%;transition:opacity .15s}
.primary:hover{opacity:.88}
.primary[disabled]{opacity:.55;cursor:progress}
.ghost{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border-radius:10px;
  border:1px solid var(--line);background:var(--bg);color:var(--ink);font:inherit;font-weight:600;font-size:.92rem;text-decoration:none;cursor:pointer}
.ghost:hover{border-color:var(--ink)}
.privacy{font-size:.8rem;color:var(--muted)}

.preview{display:flex;flex-direction:column;gap:12px}
.toc{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.toc li{display:grid;grid-template-columns:32px 1fr;gap:12px;align-items:start;padding:14px 16px;border:1px solid var(--line);border-radius:12px}
.toc .n{font-family:var(--serif);font-size:1.35rem;line-height:1.2}
.toc b{display:block;font-weight:600}
.toc span{font-size:.9rem;color:var(--muted)}

.pack{display:flex;flex-direction:column;gap:30px}
.pack-head{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.intro{display:flex;flex-direction:column;gap:10px;color:var(--muted)}
.plans{font-size:.92rem;background:var(--fill);border-radius:10px;padding:12px 16px}
.tool{display:flex;flex-direction:column;gap:12px;padding-top:28px;border-top:1px solid var(--line)}
.tool .num{font-family:var(--mono);color:var(--muted);font-size:.8rem}
.tool .tag{color:var(--muted);font-family:var(--serif);font-style:italic;font-size:1.1rem}
.tool h4{margin:8px 0 0;font-family:var(--mono);font-size:.72rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.tool ul{margin:0;padding-left:1.2em;display:flex;flex-direction:column;gap:6px}
.promptbox{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--fill)}
.promptbox pre{margin:0;padding:16px 18px;font-family:var(--mono);font-size:.82rem;line-height:1.55;white-space:pre-wrap;word-break:break-word;
  max-height:340px;overflow:auto;color:var(--ink)}
.promptbar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 10px 8px 16px;background:var(--bg);border-bottom:1px solid var(--line)}
.promptbar span{font-size:.78rem;color:var(--muted)}
.copy{appearance:none;border:0;background:var(--btn);color:var(--btn-ink);font:inherit;font-weight:600;font-size:.86rem;padding:8px 14px;border-radius:8px;min-height:40px;cursor:pointer}
.copy.done{background:var(--pine);color:var(--on-pine)}
.later{display:flex;flex-direction:column;gap:14px}
.later .updates .primary{margin-top:4px}
.notice{color:var(--pine-ink);font-weight:600}

.foot{padding-block:24px calc(40px + env(safe-area-inset-bottom,0px));font-size:.84rem;color:var(--muted);display:flex;flex-direction:column;gap:4px;border-top:1px solid var(--line)}
.foot strong{color:var(--ink)}

.toast{position:fixed;left:50%;bottom:calc(18px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);
  background:var(--ink);color:var(--bg);padding:11px 16px;border-radius:10px;font-size:.9rem;font-weight:500;
  box-shadow:0 10px 30px -12px rgba(0,0,0,.35);width:max-content;max-width:calc(100% - 32px);z-index:10}

@media (min-width:640px){
  .card{padding:28px}
  .primary{width:auto;align-self:flex-start;min-width:220px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}