.bar { border-bottom: 1px solid var(--line); }
.bar-row { display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); min-height: 64px; }
.bar-link { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-back { display: inline-flex; align-items: center; gap: var(--s-2); min-height: 44px; font-weight: 600; text-decoration: none; }
.bar-back::before { content: ''; width: 8px; height: 8px; border-left: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); }
.bar-back:hover { text-decoration: underline; text-underline-offset: 4px; }

.course { max-width: 720px; padding-block: var(--s-5) var(--s-8); display: grid; gap: var(--s-7); }
.course h1 { font-size: clamp(var(--t-4), 11vw, var(--t-5)); }
.course h1:focus { outline: none; }

.progress { display: grid; gap: var(--s-2); }
.progress-track { height: 8px; border-radius: 4px; background: var(--surface-2); overflow: hidden; }
.progress-fill { height: 100%; border-radius: 4px; background: var(--campo); transition: width var(--quick) ease-out; }

.today { display: grid; gap: var(--s-3); padding: var(--s-5); border-radius: var(--r-lg); background: var(--campo); color: var(--on-campo); }
.today h2 { font-size: var(--t-3); }
.today p { color: var(--on-campo-muted); }
.today .btn { margin-top: var(--s-2); }

.block { display: grid; gap: var(--s-3); }
.block > h2 { font-size: var(--t-3); }
.phase-block summary { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: var(--s-1) var(--s-3); min-height: 56px; padding-block: var(--s-2); cursor: pointer; list-style: none; }
.phase-block summary::-webkit-details-marker { display: none; }
.phase-block h2 { font-size: var(--t-3); }
.phase-count { grid-column: 1; font-size: var(--t-sm); color: var(--ink-muted); font-variant-numeric: tabular-nums; }
.phase-block summary .chev { grid-column: 2; grid-row: 1 / span 2; transform: rotate(135deg); transition: transform var(--quick) ease-out; }
.phase-block[open] summary .chev { transform: rotate(-45deg); }
.phase-block .block-note { margin-block: var(--s-2) var(--s-3); }
.block-note { color: var(--ink-muted); }

.rows { border-top: 1px solid var(--line); }
.row { border-bottom: 1px solid var(--line); }
.row a { display: grid; grid-template-columns: 32px 1fr auto; align-items: center; gap: var(--s-3); min-height: 56px; padding-block: var(--s-2); text-decoration: none; transition: background-color var(--quick) ease-out; }
.row a:hover { background: var(--surface-2); }
.row .row-title { display: block; font-weight: 600; line-height: 1.25; }
.row .row-sub { display: block; font-size: var(--t-sm); color: var(--ink-muted); line-height: 1.3; }
.row.is-rest .row-title { font-weight: 400; color: var(--ink-muted); }
.row.is-next a { box-shadow: inset 4px 0 0 var(--sole); padding-left: var(--s-3); }
.mark { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; border: 2px solid var(--line); font-size: var(--t-sm); font-weight: 600; font-variant-numeric: tabular-nums; color: var(--ink-muted); }
.mark svg { width: 16px; height: 16px; }
.row.is-done .mark { border-color: var(--done); background: var(--done); color: var(--surface); }
.chev { width: 8px; height: 8px; margin-right: var(--s-2); border-top: 2px solid var(--ink-muted); border-right: 2px solid var(--ink-muted); transform: rotate(45deg); }

.reset { display: grid; gap: var(--s-3); justify-items: start; padding-top: var(--s-5); border-top: 1px solid var(--line); }

.locked { display: grid; gap: var(--s-4); padding-block: var(--s-6); }
.locked .btn { justify-self: start; }

.day { display: grid; gap: var(--s-5); }
.day-head { display: grid; gap: var(--s-2); }
.day-video { aspect-ratio: 4 / 5; max-height: 52vh; width: 100%; }
.play { width: 48px; height: 48px; margin-inline: auto; color: var(--ink); }
.day-how { font-size: var(--t-1); line-height: 1.4; }
.day-doing { font-weight: 600; }
.stepper { display: grid; gap: var(--s-2); padding-block: var(--s-3); border-block: 1px solid var(--line); }
.stepper-label { font-weight: 600; }
.stepper-row { display: flex; align-items: center; justify-content: space-between; gap: var(--s-3); }
.stepper-value { font-size: var(--t-2); font-weight: 800; font-stretch: 75%; font-variant-numeric: tabular-nums; }
.stepper-btn { width: 48px; min-width: 48px; padding: 0; font-size: var(--t-1); }
.day-action { position: sticky; bottom: 0; display: grid; gap: var(--s-2); padding-block: var(--s-3); padding-bottom: calc(var(--s-3) + env(safe-area-inset-bottom)); background: var(--surface); }
.day-action .done-note { display: flex; align-items: center; gap: var(--s-2); color: var(--done); font-weight: 600; }
.day-nav { display: flex; justify-content: space-between; gap: var(--s-4); }
.day-nav a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 600; text-underline-offset: 4px; }

.player { width: 100%; max-width: none; height: 100dvh; max-height: none; margin: 0; padding: 0; border: 0; background: var(--campo); color: var(--on-campo); }
.player::backdrop { background: var(--campo); }
.player-in { display: flex; flex-direction: column; gap: var(--s-4); height: 100%; max-width: 560px; margin-inline: auto; padding: max(var(--s-5), env(safe-area-inset-top)) var(--gutter) max(var(--s-5), env(safe-area-inset-bottom)); }
.player-title { color: var(--on-campo-muted); }
.player-main { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: var(--s-2); text-align: center; }
.player-state { font-size: var(--t-4); font-weight: 800; font-stretch: 75%; line-height: 1; color: var(--sole); }
.player-state:focus { outline: none; }
.player-clock { font-size: clamp(6rem, 34vw, 11rem); font-weight: 800; font-stretch: 75%; line-height: 1; font-variant-numeric: tabular-nums; }
.player-next { color: var(--on-campo-muted); min-height: 1.55em; }
.songs { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: var(--s-3); }
.song { display: grid; gap: var(--s-2); font-weight: 600; }
.song-track { height: 8px; border-radius: 4px; background: oklch(1 0 0 / 0.25); overflow: hidden; }
.song-fill { height: 100%; background: var(--sole); }
.player-actions { display: grid; grid-template-columns: 1fr 2fr; gap: var(--s-3); }
.player .btn-plain { border-color: var(--on-campo-muted); }
.player .btn-plain:hover { border-color: var(--on-campo); }
.player-done { display: grid; gap: var(--s-3); }

.article { display: grid; gap: var(--s-5); }
.article-body { display: grid; gap: var(--s-5); }
.article-body section { display: grid; gap: var(--s-2); }
.article-body h2 { font-size: var(--t-2); }
.article-body ul { display: grid; gap: var(--s-2); padding-left: var(--s-5); list-style: disc; }
.article-warn { padding: var(--s-4); border-radius: var(--r-md); background: var(--surface-2); font-weight: 600; }
.draft { font-size: var(--t-sm); color: var(--ink-muted); }

@media (min-width: 800px) {
  .day { grid-template-columns: 280px 1fr; column-gap: var(--s-7); align-items: start; }
  .day-video { grid-row: span 5; aspect-ratio: 9 / 16; max-height: none; }
  .day-head, .day-how, .day-doing, .stepper, .day-action { grid-column: 2; }
  .day-nav { grid-column: 1 / -1; }
}