:root {
  --bg: #0E0E0F;
  --surface: #161618;
  --surface-hover: #1F1F22;
  --fg: #F4F1EC;
  --fg-mid: #B8B5AE;
  --border: #2A2826;
  --accent: #F26B1F;
  --accent-hover: #FF8A4A;
  --accent-fg: #0E0E0F;
  --r: 14px;
  --r-in: 8px;
  --gutter: 16px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg-mid);
  font: 400 16px/1.55 Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-wrap: anywhere;
}
a { color: var(--fg); text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 var(--gutter); }

header.top { padding: 20px 0 0; }
nav.tabs { display: flex; gap: 8px; flex-wrap: wrap; }
nav.tabs a, nav.tabs span {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px;
  border-radius: 999px; border: 1px solid var(--border); text-decoration: none; color: var(--fg-mid);
}
nav.tabs span[aria-current] { background: var(--surface-hover); color: var(--fg); border-color: var(--surface-hover); }

h1, h2 {
  font-weight: 800; color: var(--fg); letter-spacing: -0.02em; line-height: 1.08; margin: 0;
}
h1 { font-size: clamp(36px, 8vw, 64px); margin: 40px 0 16px; }
h2 { font-size: clamp(24px, 5vw, 34px); }
h3 { color: var(--fg); font-size: 17px; line-height: 1.35; margin: 0; font-weight: 600; }
.lead { font-size: 18px; max-width: 60ch; color: var(--fg-mid); margin: 0 0 12px; }
p { max-width: 60ch; }

.tnum { font-variant-numeric: tabular-nums; }

/* Hours-per-week picker */
.pace { margin: 28px 0 8px; }
.pace legend { color: var(--fg); font-weight: 600; margin-bottom: 8px; padding: 0; }
.pace fieldset { border: 0; margin: 0; padding: 0; }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg label {
  position: relative; display: inline-flex; align-items: center; min-height: 44px; padding: 0 16px;
  border: 1px solid var(--border); border-radius: 999px; cursor: pointer; color: var(--fg-mid);
}
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg label:has(input:checked) { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 600; }
.seg label:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.total { color: var(--fg); margin: 12px 0 0; }

/* Roadmap steps */
ol.steps { list-style: none; margin: 40px 0 0; padding: 0; display: grid; gap: 16px; }
.step { background: var(--surface); border-radius: var(--r); padding: 24px; }
.step-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px; margin-bottom: 12px; }
.step-num { font-weight: 800; color: var(--accent); font-size: 24px; line-height: 1; font-variant-numeric: tabular-nums; }
.step-head h2 { font-size: clamp(22px, 5vw, 30px); flex: 1 1 240px; }
.weeks { color: var(--fg); white-space: nowrap; }
.step .goal { color: var(--fg); margin: 0 0 16px; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px 32px; }
.cols h3 { margin-bottom: 8px; font-size: 15px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--fg-mid); font-weight: 600; }
.cols ul { margin: 0; padding-left: 20px; }
.cols li { margin: 0 0 6px; }
.result { margin: 20px 0 0; padding: 16px; border-radius: var(--r-in); background: var(--surface-hover); color: var(--fg); }
.result b { color: var(--accent); font-weight: 600; }

section.block { margin: 56px 0 0; }
section.block > h2 { margin-bottom: 16px; }
.rules { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 0; padding: 0; list-style: none; }
.rules li { background: var(--surface); border-radius: var(--r); padding: 20px; }
.rules li b { color: var(--fg); display: block; margin-bottom: 4px; }

footer { margin: 64px 0 40px; color: var(--fg-mid); font-size: 14px; }
footer p { max-width: 70ch; }

/* Catalog */
.controls { display: grid; gap: 12px; margin: 28px 0 8px; }
.search {
  width: 100%; min-height: 48px; padding: 0 16px; font: inherit; color: var(--fg);
  background: var(--surface); border: 1px solid #55524D; border-radius: 999px;
}
.search::placeholder { color: #8F8B85; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips button {
  min-height: 44px; padding: 0 16px; font: inherit; color: var(--fg-mid); cursor: pointer;
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
}
.chips button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); font-weight: 600; }
.count { color: var(--fg-mid); margin: 8px 0 0; }

.group { margin: 40px 0 0; }
.group > h2 { font-size: clamp(22px, 5vw, 30px); margin-bottom: 4px; }
.group > .sum { margin: 0 0 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.card { background: var(--surface); border-radius: var(--r); padding: 20px; scroll-margin-top: 16px; }
.card:target { outline: 2px solid var(--accent); }
.card .meta { margin: 4px 0 12px; font-size: 14px; }
.card dl { margin: 0; display: grid; gap: 8px; font-size: 15px; }
.card dt { color: var(--fg); font-weight: 600; }
.card dd { margin: 0; }
.tag {
  display: inline-block; font-size: 13px; font-weight: 600; padding: 2px 10px; border-radius: 999px;
  margin: 0 0 10px; background: var(--surface-hover); color: var(--fg);
}
.tag.p1 { background: var(--accent); color: var(--accent-fg); }
.empty { padding: 24px 0; color: var(--fg); }

@media (max-width: 420px) {
  .step { padding: 20px 16px; }
  .grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; transition: none !important; } }
.cols h3.sub { margin-top: 16px; }
.step { scroll-margin-top: 16px; }
.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.steps-dd { display: flex; flex-wrap: wrap; gap: 8px; }
.steplink {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 14px; border-radius: 999px;
  background: var(--surface-hover); text-decoration: none; color: var(--fg);
}
.start { margin: 28px 0 0; background: var(--surface); border-radius: var(--r); padding: 20px 24px; }
.start h2 { font-size: clamp(22px, 5vw, 28px); margin-bottom: 12px; }
.start ul { margin: 0; padding-left: 20px; }
.start li { margin: 0 0 8px; }
.start b { color: var(--fg); }