/* One stylesheet, served locally. No remote fonts, no CDN - join.html carries a
   live enrollment code and must make zero external requests, and using one
   stylesheet everywhere means that rule cannot be broken by accident later. */
:root {
  --ink:    #101820;
  --muted:  #5a6672;
  --accent: #1565c0;
  --ground: #ffffff;
  --panel:  #f4f6f8;
  --border: #dde3e8;
  --warn:   #8a5a00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8edf2; --muted: #9aa7b4; --accent: #64b5f6;
    --ground: #0f1519; --panel: #161d23; --border: #26313a; --warn: #d9a441;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--ground); color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 24px; }
header { border-bottom: 1px solid var(--border); padding: 56px 0 40px; }
h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.02em; text-wrap: balance; }
h2 { font-size: 1.2rem; margin: 44px 0 12px; letter-spacing: -0.01em; }
h3 { font-size: 1rem; margin: 28px 0 8px; }
p  { margin: 0 0 16px; }
.lede { font-size: 1.12rem; color: var(--muted); margin: 0; }
.eyebrow { font-size: 0.78rem; letter-spacing: 0.13em; text-transform: uppercase;
           color: var(--accent); font-weight: 600; margin: 0 0 14px; }
a { color: var(--accent); }
main { padding-bottom: 64px; }
.steps { list-style: none; padding: 0; margin: 20px 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 0 40px; margin-bottom: 16px; }
.steps li::before {
  content: counter(s); position: absolute; left: 0; top: 1px;
  width: 26px; height: 26px; border-radius: 50%; background: var(--accent);
  color: #fff; font-size: 0.8rem; font-weight: 600;
  display: flex; align-items: center; justify-content: center;
}
.grid { display: grid; gap: 1px; background: var(--border);
        border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
        grid-template-columns: 1fr 1fr; margin: 20px 0; }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.grid > div { background: var(--ground); padding: 18px 20px; }
.grid h4 { margin: 0 0 8px; font-size: 0.82rem; letter-spacing: 0.08em;
           text-transform: uppercase; color: var(--muted); }
.grid ul { margin: 0; padding-left: 18px; }
.grid li { margin-bottom: 5px; }
.btn { display: block; width: 100%; text-align: center; padding: 15px 20px;
       border-radius: 8px; background: var(--accent); color: #fff;
       text-decoration: none; font-weight: 600; margin-bottom: 12px; }
.btn.alt { background: var(--panel); color: var(--ink); border: 1px solid var(--border); }
.btn small { display: block; font-weight: 400; opacity: 0.85; font-size: 0.82rem; margin-top: 2px; }
.code { font: 600 1.5rem/1.4 ui-monospace, SFMono-Regular, Menlo, monospace;
        letter-spacing: 0.06em; background: var(--panel); border: 1px solid var(--border);
        border-radius: 8px; padding: 18px; text-align: center; margin: 8px 0 4px;
        user-select: all; -webkit-user-select: all; word-break: break-all; }
.note { background: var(--panel); border-left: 3px solid var(--accent);
        padding: 14px 18px; margin: 20px 0; border-radius: 0 6px 6px 0; }
.note.warn { border-left-color: var(--warn); }
footer { border-top: 1px solid var(--border); padding: 28px 0 48px;
         color: var(--muted); font-size: 0.88rem; }
footer a { color: var(--muted); }
dt { font-weight: 600; margin-top: 16px; }
dd { margin: 4px 0 0; color: var(--muted); }

/* Flow diagram. Inline SVG so it can use the theme tokens above; it scrolls
   inside its own box on narrow screens rather than squashing to illegibility. */
.flowbox { margin: 24px 0 8px; overflow-x: auto; }
.flow { display: block; width: 100%; min-width: 560px; height: auto;
        font: 500 13px/1 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
              "Helvetica Neue", Arial, sans-serif; }
.flow .node  { fill: var(--ground); stroke: var(--border); }
.flow .goal  { fill: none; stroke: var(--border); stroke-dasharray: 5 4; }
.flow .icon  { fill: none; stroke: var(--accent); stroke-width: 1.8;
               stroke-linecap: round; stroke-linejoin: round; }
.flow .icon.dim { stroke: var(--muted); }
.flow .lbl   { fill: var(--ink); text-anchor: middle; }
.flow .lbl.dim { fill: var(--muted); }
.flow .arrow { fill: none; stroke: var(--muted); stroke-width: 1.5;
               stroke-linecap: round; stroke-linejoin: round; }
.figcap { color: var(--muted); font-size: 0.88rem; margin: 4px 0 0; }

/* Screenshots. Phones sit in a row that scrolls on narrow screens. */
.shots { display: flex; gap: 18px; overflow-x: auto; padding: 4px 0 12px; margin: 20px 0 8px; }
.shots figure { margin: 0; flex: 0 0 auto; width: 150px; }
.shots img { display: block; width: 100%; height: auto; border-radius: 12px;
             border: 1px solid var(--border); background: var(--panel); }
.shots figcaption { color: var(--muted); font-size: 0.82rem; margin-top: 8px; text-align: center; }

/* A slot whose content does not exist yet, marked rather than faked. */
.pending { border: 1px dashed var(--border); border-radius: 8px; padding: 22px 20px;
           color: var(--muted); font-size: 0.9rem; text-align: center; margin: 20px 0; }