/* Wonder landing page. Tokens first; everything else is this page's own markup. */
:root {
  --sc-canvas:     #0A0A0A;
  --sc-surface:    #111111;
  --sc-ink:        #EDEDED;
  --sc-ink-soft:   #A1A1A1;
  --sc-accent:     #0070F3;
  --sc-accent-ink: #FFFFFF;
  --sc-font-display: "Geist", system-ui, sans-serif;
  --sc-font-text:    "Geist", system-ui, sans-serif;
  --sc-font-mono:    "Geist Mono", ui-monospace, monospace;

  --surface-2: #161616;
  --surface-3: #1F1F1F;
  --line: #242424;
  --line-strong: #333333;
  --ink-faint: #A3A3A3;
  --link: #52A8FF;          /* the accent hue, one step lighter for text on dark */
  --good: #45C46B;
  --bad: #FF6166;
  --bar-h: 56px;
  --sc-shadow-color: 0 0% 0%;
}

body { font-weight: 380; letter-spacing: 0; }
.sc-display { font-weight: 560; }
.sc-body { line-height: 1.66; letter-spacing: 0.002em; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: fixed; left: 12px; top: -60px; z-index: 100; background: var(--sc-ink); color: var(--sc-canvas); padding: 8px 12px; border-radius: 8px; }
.skip:focus { top: 12px; }
a { color: var(--link); }
button { cursor: pointer; }

/* ------------------------------------------------------------- the bar -- */
.bar {
  position: fixed; inset: 0 0 auto 0; z-index: var(--sc-z-chrome);
  height: var(--bar-h);
  display: grid; grid-template-columns: 1fr minmax(0, 28rem) 1fr; align-items: center; gap: var(--sc-5);
  padding-inline: var(--sc-gutter);
  background: color-mix(in oklab, var(--sc-canvas) 0%, transparent);
  border-bottom: 1px solid transparent;
  transition: background-color 240ms var(--sc-ease-out), border-color 240ms var(--sc-ease-out);
}
.bar.is-solid { background: color-mix(in oklab, #0A0A0A 97%, transparent); border-bottom-color: var(--line); }
.bar__mark { display: inline-flex; align-items: center; gap: 10px; color: var(--sc-ink); text-decoration: none; font-weight: 600; letter-spacing: -0.01em; justify-self: start; }
/* the Mull mark (app/icon.svg), inverted for the dark page */
.bar__mark svg { width: 22px; height: 22px; flex: 0 0 auto; }
.bar__mark rect { fill: var(--sc-ink); }
.bar__mark path { fill: none; stroke: var(--sc-canvas); stroke-width: 2.6; stroke-linejoin: round; stroke-linecap: round; }
.bar__mark circle { fill: var(--sc-accent); }
.bar__pages { display: flex; gap: 6px; }
.bar__pages a {
  position: relative; flex: 1; height: 20px; display: flex; align-items: center;
}
.bar__pages a::before { content: ""; position: absolute; inset: 8px 0; border-radius: 4px; background: var(--surface-3); }
.bar__fill {
  position: absolute; inset: 8px 0; border-radius: 4px; background: var(--sc-ink);
  transform-origin: 0 50%; transform: scaleX(var(--f, 0));
}
.bar__pages a[aria-current="step"] .bar__fill { background: var(--link); }
@media (hover: hover) and (pointer: fine) {
  .bar__pages a:hover::before { background: var(--line-strong); }
}
.bar__where { justify-self: end; margin: 0; font-family: var(--sc-font-mono); font-size: 0.78rem; color: var(--sc-ink-soft); white-space: nowrap; }

/* ------------------------------------------------------------ composer -- */
.composer { display: flex; gap: 8px; padding: 6px; border-radius: 14px; background: color-mix(in oklab, #161616 86%, transparent); border: 1px solid var(--line-strong); box-shadow: var(--sc-e2), var(--sc-edge); max-width: 34rem; }
.composer:focus-within { border-color: color-mix(in oklab, var(--link) 60%, var(--line-strong)); }
.composer input {
  flex: 1; min-width: 0; background: transparent; border: 0; outline: none;
  padding: 10px 12px; font-size: 1rem; color: var(--sc-ink);
}
.composer input::placeholder { color: var(--ink-faint); }
.composer button {
  border: 0; border-radius: 10px; padding: 10px 16px; white-space: nowrap;
  background: var(--sc-accent); color: var(--sc-accent-ink); font-weight: 550; font-size: 0.95rem;
  transition: transform 120ms var(--sc-ease-out), background-color 160ms var(--sc-ease-out);
}
.composer button:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .composer button:hover { background: #0761D1; } }
.composer.is-empty { animation: nudge 360ms var(--sc-ease-out); }
@keyframes nudge { 30% { transform: translateX(-4px); } 60% { transform: translateX(3px); } }

/* --------------------------------------------------------------- hero ---- */
.hero__stage { background: #000; }
.hero__plane { position: absolute; inset: -4%; pointer-events: none; will-change: transform; }
.hero__plane img, .hero__plane picture { width: 100%; height: 100%; max-width: none; object-fit: cover; display: block; }
.hero__plate { z-index: 0; opacity: 0.85; transform-origin: 20% 20%;
  transform: translate3d(calc(var(--mx, 0) * -4px), calc(var(--my, 0) * -4px), 0) scale(calc(1.02 + var(--sc-p, 0) * 0.07)); }
.hero__plate img { object-position: 0% 0%; }
/* The prism and the lesson it spills share one transform, so the pieces stay on the light. */
.hero__subject, .hero__spill { transform-origin: 58% 30%;
  transform: translate3d(calc(var(--mx, 0) * -12px + var(--sc-p, 0) * -2vw), calc(var(--my, 0) * -8px + var(--sc-p, 0) * -7vh), 0) scale(calc(1 + var(--sc-p, 0) * 0.16)); }
.hero__subject { z-index: 3; mix-blend-mode: screen;
  -webkit-mask-image: linear-gradient(to bottom, #000 70%, transparent 96%); mask-image: linear-gradient(to bottom, #000 70%, transparent 96%); }
.hero__subject img { object-position: 70% 38%; }
.hero__spill { z-index: 4; }
.spill { position: absolute; }
.spill__rays { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; mix-blend-mode: screen; }
.spill__rays line { stroke-width: 1.5; vector-effect: non-scaling-stroke; stroke-linecap: round; }
.frag {
  position: absolute; left: 0; top: 0; width: clamp(9.5rem, 12.5vw, 12rem);
  padding: 10px 12px 11px; border-radius: 10px;
  background: linear-gradient(color-mix(in oklab, var(--hue) 16%, #111) , #101010 46%);
  border: 1px solid color-mix(in oklab, var(--hue) 34%, #2a2a2a); border-top: 2px solid var(--hue);
  box-shadow: 0 2px 4px rgb(0 0 0 / 0.5), 0 14px 30px -8px rgb(0 0 0 / 0.75);
  opacity: 0; will-change: transform, opacity;
}
.frag p { margin: 0; }
.frag__k { font-family: var(--sc-font-mono); font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; color: color-mix(in oklab, var(--hue) 55%, #EDEDED); }
.frag__q { margin-top: 5px !important; font-size: 0.74rem; line-height: 1.35; color: #D9D9D9; }
.frag__q b { color: var(--sc-ink); font-weight: 600; margin-right: 4px; }
.frag__opt { display: block; height: 7px; margin-top: 5px; border-radius: 3px; background: #262626; }
.frag__opt:first-of-type { margin-top: 8px; }
.frag__opt.is-on { background: color-mix(in oklab, var(--hue) 70%, #262626); }
.frag__bar { display: block; height: 8px; margin-top: 6px; border-radius: 3px; background: var(--hue); transform-origin: 0 50%; transform: scaleX(var(--v)); opacity: 0.85; }
.frag__bar:first-of-type { margin-top: 9px; }
.frag__dots { display: flex; gap: 3px; margin-top: 8px; }
.frag__dots i { flex: 1; height: 3px; border-radius: 2px; background: #2a2a2a; }
.frag__dots i.is-on { background: var(--hue); }
.hero__dust { z-index: 5; mix-blend-mode: screen; opacity: 0.72;
  -webkit-mask-image: linear-gradient(to bottom, #000 62%, transparent 92%); mask-image: linear-gradient(to bottom, #000 62%, transparent 92%);
  transform: translate3d(calc(var(--mx, 0) * -26px), calc(var(--my, 0) * -18px + var(--sc-p, 0) * -24vh), 0) scale(calc(1.06 + var(--sc-p, 0) * 0.22)); }
.hero__floor { position: absolute; inset: auto 0 0 0; height: 28vh; z-index: 1; pointer-events: none;
  background: linear-gradient(to top, var(--sc-canvas), transparent); }
.hero__copy {
  position: absolute; z-index: 2; left: var(--sc-gutter); bottom: clamp(3.5rem, 13vh, 9rem);
  max-width: min(44rem, 60vw);
}
.hero__h { font-size: clamp(2.9rem, 1.6rem + 4.6vw, 6rem); line-height: 0.98; max-width: 13ch; }
.hero__sub { margin: var(--sc-5) 0 var(--sc-6); max-width: 40ch; font-size: var(--sc-t-lg); line-height: 1.45; color: #C9C9C9; text-wrap: pretty; }
.hero__beat {
  position: absolute; z-index: 2; left: var(--sc-gutter); bottom: clamp(3.5rem, 15vh, 10rem); margin: 0;
  font-size: var(--sc-t-3xl); line-height: 1.02; max-width: 16ch;
}

/* --------------------------------------------------------- page one ---- */
.p1 { padding-bottom: 0; }
.p1__turn { margin-top: clamp(8rem, 26vh, 16rem); padding-bottom: clamp(10rem, 40vh, 22rem); font-size: var(--sc-t-2xl); line-height: 1.08; color: var(--sc-ink); }

/* ---------------------------------------------------- page two (peak) -- */
.p2__stage {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2rem, 4vw, 4.5rem); align-items: stretch;
  padding: calc(var(--bar-h) + 2rem) var(--sc-gutter) 1.6rem;
}
.p2__cap { margin: 10px 0 0; max-width: 54ch; color: var(--sc-ink-soft); font-size: 0.95rem; line-height: 1.5; }
.status { margin: 0; display: inline-flex; align-items: center; gap: 10px; font-size: 0.92rem; color: var(--sc-ink); max-width: 42ch; }
.status span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.status__dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--link); box-shadow: 0 0 0 0 color-mix(in oklab, var(--link) 60%, transparent); animation: pulse 1.6s var(--sc-ease-out) infinite; }
.is-done .status__dot { background: var(--good); animation: none; }
@keyframes pulse { 70% { box-shadow: 0 0 0 7px transparent; } }
.steer { padding: 3px 9px; border-radius: 999px; background: color-mix(in oklab, var(--link) 18%, transparent); color: #CFE6FF; border: 1px solid color-mix(in oklab, var(--link) 50%, transparent); font-family: var(--sc-font-text); font-size: 0.75rem; }
.steer.is-fresh { animation: pop 520ms var(--sc-ease-out); }
@keyframes pop { from { transform: scale(0.9); opacity: 0.4; } }
.reader { background: var(--sc-surface); box-shadow: var(--sc-e3), var(--sc-edge); display: flex; flex-direction: column; }
@keyframes blink { 50% { opacity: 0; } }
.reader__view { position: relative; flex: 1; overflow: hidden; }
.activity { list-style: none; margin: 0; padding: 26px clamp(20px, 3vw, 40px) 0; display: grid; gap: 10px; font-size: 0.92rem; color: var(--ink-faint); }
.activity[hidden] { display: none; }
.activity li::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 12px; border-radius: 50%; background: var(--good); vertical-align: 2px; }
.activity li.is-now { color: var(--sc-ink); }
.activity li.is-now::before { background: var(--link); animation: pulse 1.6s var(--sc-ease-out) infinite; }
.lesson { padding: 26px clamp(20px, 3vw, 40px) 40vh; max-width: 46rem; will-change: transform; }

/* the rendered lesson: Wonder's reader, in dark */
.lesson > * + * { margin-top: 14px; }
.lesson p { margin: 0; color: #D6D6D6; line-height: 1.66; font-size: 0.98rem; text-wrap: pretty; }
.lesson strong { color: var(--sc-ink); font-weight: 600; }
.l-title { margin: 0 0 4px; font-size: clamp(1.4rem, 1.1rem + 0.9vw, 1.9rem); line-height: 1.12; letter-spacing: -0.025em; font-weight: 600; color: var(--sc-ink); text-wrap: balance; }
.lesson { counter-reset: page; }
.l-page { counter-increment: page; margin: 30px 0 0; padding-top: 22px; border-top: 1px solid var(--line); font-size: 1.15rem; letter-spacing: -0.015em; font-weight: 600; color: var(--sc-ink); }
.l-page::before { content: counter(page); display: inline-grid; place-items: center; width: 22px; height: 22px; margin-right: 10px; border-radius: 6px; background: var(--surface-3); font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--sc-ink-soft); vertical-align: 2px; }
.l-list { margin: 0; padding-left: 1.3rem; color: #D6D6D6; line-height: 1.66; }
.l-list li + li { margin-top: 6px; }
.kt { position: relative; color: var(--sc-ink); border-bottom: 1px dashed color-mix(in oklab, var(--link) 70%, transparent); cursor: help; outline-offset: 2px; }
.kt__def {
  position: absolute; left: 0; bottom: calc(100% + 8px); z-index: 5; width: max-content; max-width: 18rem;
  padding: 10px 12px; border-radius: 10px; background: var(--surface-3); border: 1px solid var(--line-strong); box-shadow: var(--sc-e2);
  font-size: 0.82rem; line-height: 1.45; color: var(--sc-ink); opacity: 0; transform: translateY(4px); pointer-events: none;
  transition: opacity 160ms var(--sc-ease-out), transform 160ms var(--sc-ease-out);
}
.kt:hover .kt__def, .kt:focus .kt__def { opacity: 1; transform: none; }
.cite { display: inline-block; margin-left: 4px; padding: 0 7px; border-radius: 999px; background: var(--surface-3); color: var(--sc-ink-soft); font-size: 0.7rem; line-height: 1.6; text-decoration: none; vertical-align: 1px; }
.cite:hover { color: var(--sc-ink); background: var(--line-strong); }

.w { border-radius: 14px; border: 1px solid var(--line-strong); background: var(--surface-2); padding: 16px 18px; }
.w__title { margin: 0 0 12px !important; font-size: 0.86rem !important; font-weight: 600; color: var(--sc-ink) !important; }
.w button { font: inherit; }
.w.is-snapped { animation: snap 900ms var(--sc-ease-out); }
@keyframes snap {
  0% { transform: scale(0.97); border-color: var(--link); box-shadow: 0 0 0 3px color-mix(in oklab, var(--link) 35%, transparent); }
  60% { border-color: var(--link); }
  100% { transform: none; box-shadow: 0 0 0 0 transparent; }
}
.w-pending { display: flex; align-items: center; gap: 12px; border-style: dashed; background: transparent; }
.w-pending__name { font-size: 0.84rem; color: #9CCBFF; }
.w-pending__bar { flex: 1; height: 6px; border-radius: 3px; background: linear-gradient(90deg, var(--surface-3), #2a2a2a, var(--surface-3)); background-size: 200% 100%; animation: shimmer 1.2s linear infinite; }
@keyframes shimmer { to { background-position: -200% 0; } }

.seg { display: inline-flex; padding: 3px; border-radius: 999px; background: var(--surface-3); gap: 2px; }
.seg button { border: 0; border-radius: 999px; padding: 6px 12px; background: transparent; color: var(--sc-ink-soft); font-size: 0.82rem; }
.seg button[aria-selected="true"] { background: var(--sc-canvas); color: var(--sc-ink); box-shadow: var(--sc-e1); }
.w-compare__list { margin: 12px 0 0; padding-left: 1.1rem; color: #D6D6D6; font-size: 0.92rem; line-height: 1.6; }

.w-bars__rows { display: grid; gap: 10px; }
.w-bars__row { display: grid; grid-template-columns: minmax(0, 11rem) 1fr auto; gap: 12px; align-items: center; font-size: 0.85rem; color: var(--sc-ink-soft); }
.w-bars__track { height: 10px; border-radius: 5px; background: var(--surface-3); overflow: hidden; }
.w-bars__fill { display: block; height: 100%; border-radius: 5px; background: #5C5C5C; transform-origin: 0 50%; transform: scaleX(var(--v)); }
.w-bars__row.is-hi { color: var(--sc-ink); }
.w-bars__row.is-hi .w-bars__fill { background: var(--link); }
.w-bars__val { font-family: var(--sc-font-mono); font-size: 0.78rem; white-space: nowrap; }
.w-bars__val small { color: var(--ink-faint); font-size: 0.7rem; }

.w-callout { background: color-mix(in oklab, var(--link) 7%, var(--surface-2)); border-color: color-mix(in oklab, var(--link) 28%, var(--line)); }
.w-reveal details { border-top: 1px solid var(--line); padding: 10px 0; }
.w-reveal details:last-child { padding-bottom: 0; }
.w-reveal summary { cursor: pointer; color: var(--sc-ink); font-size: 0.92rem; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.w-reveal summary::after { content: "Show"; font-size: 0.75rem; color: var(--link); }
.w-reveal details[open] summary::after { content: "Hide"; }
.w-reveal details p { margin-top: 8px !important; font-size: 0.92rem !important; }

.w-steps__dots { display: flex; gap: 4px; margin: 0 0 12px; padding: 0; list-style: none; }
.w-steps__dots li { flex: 1; height: 4px; border-radius: 2px; background: var(--surface-3); }
.w-steps__dots li.is-on { background: var(--link); }
.w-steps__label { color: var(--sc-ink) !important; font-weight: 600; font-size: 0.92rem !important; }
.w-steps__body p + p { margin-top: 4px !important; }
.w-steps__nav, .w-quiz__opts { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.w-steps__nav button, .w-quiz__opts button {
  border: 1px solid var(--line-strong); background: var(--sc-canvas); color: var(--sc-ink); border-radius: 10px; padding: 8px 12px; font-size: 0.86rem; text-align: left;
  transition: border-color 140ms var(--sc-ease-out), transform 120ms var(--sc-ease-out);
}
.w-steps__nav button.is-primary { background: var(--sc-ink); color: var(--sc-canvas); border-color: var(--sc-ink); }
.w-steps__nav button:disabled { opacity: 0.4; cursor: default; }
.w-steps__nav button:active, .w-quiz__opts button:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .w-quiz__opts button:not(:disabled):hover { border-color: var(--link); } }
.w-quiz__q { border: 0; margin: 0; padding: 0; }
.w-quiz__q + .w-quiz__q { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.w-quiz__q legend { padding: 0; color: var(--sc-ink); font-size: 0.92rem; }
.w-quiz__opts button:disabled { cursor: default; opacity: 0.55; }
.w-quiz__opts button.is-right { opacity: 1; border-color: var(--good); color: #CFF5D8; }
.w-quiz__opts button.is-wrong { opacity: 1; border-color: var(--bad); color: #FFD3D5; }
.w-quiz__fb { margin-top: 8px !important; font-size: 0.86rem !important; color: var(--sc-ink-soft) !important; }
.w-quiz__fb:empty { display: none; }
.w-quiz__score { margin-top: 12px !important; font-weight: 600; color: var(--sc-ink) !important; }
.w-quiz__score:empty { display: none; }
.w-sources ol { margin: 0; padding-left: 1.2rem; font-size: 0.82rem; line-height: 1.6; color: var(--ink-faint); }
.w-sources a { color: var(--sc-ink-soft); text-decoration: none; }
.w-sources a:hover { color: var(--sc-ink); text-decoration: underline; }
.w-none { display: none; }


/* --------------------------------------------------------- page three --- */
.p3__grid { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: clamp(2rem, 6vw, 7rem); align-items: center; }
.p3__copy { order: 2; }
.p3__copy h2 { max-width: 10ch; }
.tutor { order: 1; max-width: 36rem; justify-self: end; width: 100%; }
.tutor__mode { display: inline-flex; align-items: center; gap: 10px; margin: 0 0 var(--sc-5); font-size: 0.86rem; color: var(--sc-ink); }
.switch { width: 30px; height: 18px; border-radius: 999px; background: var(--sc-accent); position: relative; }
.switch::after { content: ""; position: absolute; top: 2px; right: 2px; width: 14px; height: 14px; border-radius: 50%; background: #fff; }
.tutor__log { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.msg { max-width: 88%; padding: 12px 15px; border-radius: 16px; font-size: 0.98rem; line-height: 1.55; animation: rise 420ms var(--sc-ease-out) both; }
.msg--you { justify-self: end; background: var(--surface-3); border-radius: 16px 16px 4px 16px; color: var(--sc-ink); }
.msg--tutor { justify-self: start; background: transparent; border: 1px solid var(--line-strong); border-radius: 16px 16px 16px 4px; color: #D9D9D9; }
.msg--hint { border-style: dashed; }
.msg--right { border-color: color-mix(in oklab, var(--good) 55%, var(--line)); }
.msg .chip-saved { display: inline-block; margin-top: 8px; padding: 3px 9px; border-radius: 999px; background: var(--surface-3); font-size: 0.76rem; color: var(--sc-ink-soft); }
@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
.tutor__choices { display: flex; flex-wrap: wrap; gap: 8px; margin-top: var(--sc-5); justify-content: flex-end; }
.tutor__choices button {
  border: 1px solid var(--line-strong); background: var(--sc-surface); color: var(--sc-ink); border-radius: 999px; padding: 9px 15px; font-size: 0.9rem;
  transition: border-color 140ms var(--sc-ease-out), transform 120ms var(--sc-ease-out);
}
.tutor__choices button:active { transform: scale(0.97); }
.tutor__choices button:disabled { opacity: 0.35; cursor: default; }
@media (hover: hover) and (pointer: fine) { .tutor__choices button:not(:disabled):hover { border-color: var(--link); } }
.tutor__note { margin: var(--sc-6) 0 0; font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--ink-faint); text-align: right; }

/* ---------------------------------------------------------- page four --- */
.p4__stage { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(2rem, 5vw, 6rem); align-items: center; padding: calc(var(--bar-h) + 2rem) var(--sc-gutter) 2rem; }
.p4__copy h2 { max-width: 12ch; }
.curve { margin: 0; }
.curve svg { width: 100%; height: auto; overflow: visible; }
.curve figcaption { margin-top: 12px; font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--ink-faint); max-width: 60ch; }
.curve__read { display: flex; gap: var(--sc-6); margin-bottom: 14px; font-family: var(--sc-font-mono); font-size: 0.8rem; }
.curve__read p { margin: 0; display: flex; flex-direction: column; gap: 2px; }
.curve__read .k { color: var(--ink-faint); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; }
.curve__read b { font-weight: 500; font-size: 1.3rem; color: var(--sc-ink); font-family: var(--sc-font-text); letter-spacing: -0.01em; }
.curve__read .is-dim b { color: var(--sc-ink-soft); }
.curve__read .is-on b { color: var(--link); }
.cv-grid { stroke: var(--line); stroke-width: 1; }
.cv-axis { fill: var(--ink-faint); font-family: var(--sc-font-mono); font-size: 11px; }
.cv-off { fill: none; stroke: #6B6B6B; stroke-width: 2; stroke-dasharray: 5 6; }
.cv-on { fill: none; stroke: var(--link); stroke-width: 2.5; stroke-linejoin: round; }
.cv-area { fill: url(#cvfill); }
.cv-dot { fill: var(--sc-canvas); stroke: var(--link); stroke-width: 2; transition: opacity 200ms var(--sc-ease-out); }
.cv-lbl { fill: var(--sc-ink-soft); font-family: var(--sc-font-mono); font-size: 11px; transition: opacity 200ms var(--sc-ease-out); }
.cv-head { stroke: var(--sc-ink); stroke-width: 1; opacity: 0.35; }

/* ---------------------------------------------------------- page five --- */
.p5__stage { display: flex; align-items: center; }
.p5__goal { position: absolute; z-index: 2; left: var(--sc-gutter); top: calc(var(--bar-h) + 2rem); margin: 0; display: flex; gap: 12px; align-items: baseline; font-size: 0.9rem; color: var(--sc-ink-soft);
  opacity: clamp(0, calc(var(--sc-p, 0) * 8 - 1), 1); }
.p5__goal b { color: var(--sc-ink); font-weight: 550; }
.p5__goal span { font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; }
.rail { gap: 16px; padding: calc(var(--bar-h) + 1rem) var(--sc-gutter) 1rem; align-items: stretch; }
.rail > * {
  flex: none;
  opacity: clamp(0.5, calc(var(--sc-p, 0) * 11 - var(--i) + 2.6), 1);
}
@media (prefers-reduced-motion: no-preference) {
  .rail > * { translate: 0 calc(clamp(0, var(--i) - var(--sc-p, 0) * 11 - 1.2, 1) * 22px); }
}
.rail__lead { width: min(30rem, 84vw); padding-right: clamp(1rem, 4vw, 4rem); display: flex; flex-direction: column; justify-content: center; }
.rail__lead > * + * { margin-top: var(--sc-4); }
.rail__lead h2 { max-width: 11ch; }
.ask { margin-top: var(--sc-6) !important; padding: 12px 15px; border-radius: 16px 16px 4px 16px; background: var(--surface-3); color: var(--sc-ink); font-size: 0.95rem; line-height: 1.5; max-width: 26rem; }
.trail { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; font-size: 0.82rem; color: var(--ink-faint); }
.trail li::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 9px; border-radius: 50%; background: var(--good); vertical-align: 1px; }
.memchips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.memchips li { padding: 5px 10px; border-radius: 999px; border: 1px solid var(--line-strong); font-size: 0.78rem; color: var(--sc-ink-soft); }
.memchips li b { font-weight: 500; color: var(--sc-ink); }
.day {
  width: 17.5rem; padding: 18px; border-radius: 16px; background: var(--sc-surface); border: 1px solid var(--line); box-shadow: var(--sc-e2), var(--sc-edge);
  display: flex; flex-direction: column; align-self: center; min-height: 17rem;
}
.day__n { margin: 0; font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--ink-faint); letter-spacing: 0.04em; }
.day__f { margin: 4px 0 16px; font-size: 1.12rem; font-weight: 600; letter-spacing: -0.015em; color: var(--sc-ink); line-height: 1.2; }
.day ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.day li { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; padding: 10px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--line); font-size: 0.86rem; color: #D6D6D6; line-height: 1.35; }
.kind { font-family: var(--sc-font-mono); font-size: 0.66rem; letter-spacing: 0.04em; text-transform: uppercase; padding: 2px 6px; border-radius: 5px; background: var(--surface-3); color: var(--sc-ink-soft); margin-top: 1px; }
.kind--lesson { color: #BFDDFF; background: color-mix(in oklab, var(--link) 16%, transparent); }
.rail__end { width: min(24rem, 84vw); align-self: center; display: flex; flex-direction: column; gap: 14px; padding-right: 8vw; }
.approval { padding: 20px; border-radius: 16px; background: var(--surface-2); border: 1px solid color-mix(in oklab, var(--link) 40%, var(--line)); box-shadow: var(--sc-e3), var(--sc-edge); }
.approval__k { margin: 0; font-family: var(--sc-font-mono); font-size: 0.7rem; color: var(--link); letter-spacing: 0.04em; text-transform: uppercase; }
.approval__t { margin: 6px 0 8px; font-size: 1.25rem; font-weight: 600; letter-spacing: -0.015em; color: var(--sc-ink); }
.approval__r { margin: 0; font-size: 0.9rem; color: var(--sc-ink-soft); line-height: 1.55; }
.approval__go { display: flex; gap: 8px; margin-top: 16px; }
.btn { display: inline-flex; align-items: center; border-radius: 10px; padding: 9px 14px; font-size: 0.88rem; font-weight: 550; text-decoration: none; border: 1px solid var(--line-strong); color: var(--sc-ink); background: transparent; transition: transform 120ms var(--sc-ease-out), background-color 160ms var(--sc-ease-out); }
.btn--primary { background: var(--sc-accent); border-color: var(--sc-accent); color: #fff; }
.btn:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .btn--primary:hover { background: #0761D1; } }
.rail__note { margin: 0; font-family: var(--sc-font-mono); font-size: 0.72rem; color: var(--ink-faint); line-height: 1.5; }

/* -------------------------------------------------------------- close ---- */
.close__stage {
  display: grid; grid-template-rows: 1fr auto auto auto; grid-template-columns: minmax(0, 1fr); justify-items: center; align-content: center; gap: var(--sc-6);
  padding: calc(var(--bar-h) + 2rem) var(--sc-gutter) 1.5rem; text-align: center;
  --f: clamp(0, calc((var(--sc-p, 0) - 0.04) * 2.3), 1);
}
.close__h { align-self: end; }
.fan { position: relative; list-style: none; margin: 0; padding: 0; width: 100%; height: clamp(13rem, 30vh, 17rem); }
.ix {
  position: absolute; left: 50%; top: 0; width: clamp(12rem, 17vw, 15rem); height: clamp(11.5rem, 26vh, 15rem);
  margin-left: calc(clamp(12rem, 17vw, 15rem) / -2);
  padding: 18px; border-radius: 14px; text-align: left;
  background: #F4F1EA; color: #1A1A1A;
  border-top: 5px solid var(--hue);
  box-shadow: 0 2px 4px rgb(0 0 0 / 0.4), 0 18px 40px -10px rgb(0 0 0 / 0.7);
  transform-origin: 50% 120%;
  transform:
    translateX(calc(var(--k) * clamp(8.5rem, 13vw, 12.5rem) * var(--f)))
    translateY(calc(var(--ak) * var(--ak) * 9px * var(--f) + (1 - var(--f)) * var(--ak) * -4px))
    rotate(calc(var(--k) * 5deg * var(--f) + (1 - var(--f)) * var(--k) * 1.2deg));
  z-index: calc(10 - var(--ak));
}
.ix__t { margin: 0; font-weight: 650; font-size: 1.1rem; letter-spacing: -0.015em; }
.ix__d { margin: 8px 0 0; font-size: 0.86rem; line-height: 1.45; color: #4A4740; }
.close__ask { display: block; margin-bottom: 12px; font-size: var(--sc-t-lg); color: var(--sc-ink); letter-spacing: -0.01em; }
.composer--close { display: block; padding: 0; background: none; border: 0; box-shadow: none; width: min(34rem, 100%); }
.composer__row { display: flex; gap: 8px; padding: 6px; border-radius: 14px; background: #161616; border: 1px solid var(--line-strong); box-shadow: var(--sc-e2), var(--sc-edge); }
.composer__row:focus-within { border-color: color-mix(in oklab, var(--link) 60%, var(--line-strong)); }
.foot { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 18px; font-size: 0.78rem; color: var(--ink-faint); }
.foot p { margin: 0; }
.foot__mark { color: var(--sc-ink); font-weight: 600; margin-right: 6px; }
.foot a { color: inherit; text-underline-offset: 2px; }
.foot a:hover { color: var(--sc-ink); }
.noscript { padding: 2rem; text-align: center; }

/* ------------------------------------------------------------- phones ---- */
@media (max-width: 860px) {
  .bar { grid-template-columns: auto 1fr auto; gap: 14px; }
  .bar__where { font-size: 0.7rem; }
  .p3__copy { order: 0; }
  .tutor { justify-self: stretch; }
  .p2__stage { padding-top: calc(var(--bar-h) + 1rem); gap: 12px; padding-bottom: 12px; }
  .p2__cap { font-size: 0.84rem; }
  .p4__stage { grid-template-columns: 1fr; align-content: center; gap: 1.2rem; padding-top: calc(var(--bar-h) + 1rem); }
  .p4__copy .sc-body { font-size: 0.92rem; }
  .curve__read { gap: 1.2rem; }
  .curve__read b { font-size: 1.05rem; }
}
@media (max-width: 760px) {
  .bar__mark span { display: none; }
  .hero__subject img { object-position: 50% 0%; }
  .hero__copy { left: var(--sc-gutter); right: var(--sc-gutter); bottom: 2.2rem; max-width: none; }
  .hero__h { font-size: clamp(2.4rem, 11vw, 3.4rem); }
  .hero__sub { font-size: 1.02rem; margin: 14px 0 20px; }
  .hero__beat { font-size: clamp(2rem, 9vw, 2.8rem); bottom: 3rem; }
  .composer button { padding: 10px 12px; }
  .p1__turn { padding-bottom: 18vh; }
  .day { width: 15.5rem; min-height: 17rem; }
  .ix { width: 8.6rem; height: 10.5rem; margin-left: -4.3rem; padding: 12px; }
  .ix { transform:
    translateX(calc(var(--k) * 3rem * var(--f)))
    translateY(calc(var(--ak) * var(--ak) * 6px * var(--f)))
    rotate(calc(var(--k) * 6deg * var(--f))); }
  .ix__t { font-size: 0.95rem; }
  .ix__d { font-size: 0.74rem; }
  .fan { height: 13rem; }
  .close__stage { gap: 1.2rem; grid-template-rows: auto; align-content: center; }
  .fan { height: 12rem; }
}

/* ---------------------------------------------------- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  .hero__plane { transform: none !important; }
  .w.is-snapped, .steer.is-fresh, .msg, .composer.is-empty { animation: none; }
  .status__dot, .w-pending__bar, .wire__code .c { animation: none; }
}

/* hero spill on phones: three smaller pieces, clear of the headline */
@media (max-width: 760px) {
  .frag { width: 8rem; padding: 8px 10px 9px; }
  .frag__q { font-size: 0.68rem; }
}

/* ------------------------------------------------- the ways in --------- */
.bar__end { justify-self: end; display: flex; align-items: center; gap: 18px; }
.bar__in { color: var(--sc-ink); text-decoration: none; font-size: 0.86rem; font-weight: 550; padding: 6px 12px; border-radius: 8px; border: 1px solid var(--line-strong); white-space: nowrap; transition: border-color 160ms var(--sc-ease-out), background-color 160ms var(--sc-ease-out); }
.bar__link { color: var(--sc-ink-soft); text-decoration: none; font-size: 0.86rem; font-weight: 500; white-space: nowrap; }
@media (hover: hover) and (pointer: fine) { .bar__link:hover { color: var(--sc-ink); } }
@media (hover: hover) and (pointer: fine) { .bar__in:hover { border-color: var(--sc-ink-soft); background: var(--surface-2); } }
.bar__in:active { transform: translateY(1px); }

.composer__note { margin: 10px 0 0; font-size: 0.82rem; color: var(--ink-faint); }
.composer__note b { color: var(--sc-ink-soft); font-weight: 500; }
.composer--close .composer__note { text-align: center; }

/* the ask at the peak: rises inside the reader once the stream is done */
.yourturn {
  position: absolute; left: 12px; right: 12px; bottom: 12px; z-index: 6;
  padding: 14px; border-radius: 14px;
  background: color-mix(in oklab, #0D0D0D 94%, transparent); border: 1px solid color-mix(in oklab, var(--link) 45%, var(--line-strong));
  box-shadow: 0 -12px 40px -8px rgb(0 0 0 / 0.8), var(--sc-e3);
  opacity: 0; transform: translateY(16px); pointer-events: none;
  transition: opacity 320ms var(--sc-ease-out), transform 420ms var(--sc-ease-out);
}
.composer--close.yourturn { width: auto; max-width: none; }
.yourturn.is-on { opacity: 1; transform: none; pointer-events: auto; }
.yourturn__ask { display: block; margin: 0 2px 10px; font-size: 0.98rem; font-weight: 550; color: var(--sc-ink); letter-spacing: -0.01em; }
.yourturn .composer__row { box-shadow: none; }

/* one-tap topics */
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; max-width: 46rem; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px 7px 8px; border-radius: 999px;
  background: var(--sc-surface); border: 1px solid var(--line-strong); color: var(--sc-ink); text-decoration: none; font-size: 0.84rem;
  transition: border-color 140ms var(--sc-ease-out), transform 120ms var(--sc-ease-out);
}
.chip:active { transform: scale(0.97); }
@media (hover: hover) and (pointer: fine) { .chip:hover { border-color: var(--link); } }
.chip__tag { font-family: var(--sc-font-mono); font-size: 0.64rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-faint); padding: 2px 7px; border-radius: 999px; background: var(--surface-3); }

@media (max-width: 860px) {
  .bar__end { gap: 10px; }
  .bar__where { display: none; }
  .bar__in { font-size: 0.8rem; padding: 5px 10px; }
  .yourturn { left: 8px; right: 8px; bottom: 8px; padding: 10px; }
  .yourturn__ask { font-size: 0.86rem; margin-bottom: 8px; }
}
@media (max-width: 760px) {
  .chips { gap: 6px; }
  .chip { font-size: 0.76rem; padding: 6px 10px 6px 6px; }
  .chips .chip:nth-child(n+4) { display: none; }
  .composer__note { font-size: 0.76rem; }
}
@media (prefers-reduced-motion: reduce) {
  .yourturn { transform: none; transition: opacity 200ms; }
}


/* ----------------------------------------------- page one: anything ---- */
.p1 { padding-bottom: 0; overflow: clip; }
.p1__head h2 { max-width: 18ch; }
.topics { margin-top: var(--sc-8); display: grid; gap: 12px;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.topics__row { display: flex; gap: 10px; width: max-content; padding-inline: 4vw;
  transform: translate3d(calc((var(--sc-p, 0.5) - 0.5) * var(--dir) * var(--spd) * 2 - 12%), 0, 0); }
.topics__row:nth-child(even) { margin-left: -6vw; }
.topics .chip { font-size: 0.95rem; padding: 9px 15px 9px 9px; }
.p1__turn { margin-top: clamp(7rem, 22vh, 14rem); padding-bottom: clamp(9rem, 36vh, 20rem); font-size: var(--sc-t-2xl); line-height: 1.08; color: var(--sc-ink); max-width: 22ch; }

/* ------------------------------------- page two: reader and margin notes */
.p2__side { display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.p2__side h2 { max-width: 11ch; }
.p2__side .sc-body { margin-top: var(--sc-4); }
.notes { list-style: none; margin: var(--sc-6) 0 0; padding: 0; display: grid; gap: 12px; counter-reset: note; }
.notes li { position: relative; padding-left: 30px; font-size: 0.95rem; line-height: 1.45; color: var(--ink-faint); transition: color 260ms var(--sc-ease-out); }
.notes li::before { content: ""; position: absolute; left: 0; top: 0.3em; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid var(--line-strong); transition: background-color 260ms var(--sc-ease-out), border-color 260ms var(--sc-ease-out); }
.notes li.is-on { color: var(--sc-ink); }
.notes li.is-on::before { border-color: var(--link); background: radial-gradient(circle, var(--link) 0 4px, transparent 5px); }
.notes b { font-weight: 600; color: #CFE6FF; }
.p2__cap { margin: var(--sc-6) 0 0; max-width: 40ch; font-family: var(--sc-font-mono); font-size: 0.72rem; line-height: 1.5; color: var(--ink-faint); }
.reader { position: relative; min-height: 0; border-radius: 16px; border: 1px solid var(--line); overflow: hidden; background: var(--sc-surface); box-shadow: var(--sc-e3), var(--sc-edge); display: flex; flex-direction: column; }
.reader__bar { display: flex; align-items: center; gap: 14px; padding: 12px 18px; border-bottom: 1px solid var(--line); }
.reader__title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 0.88rem; font-weight: 550; color: var(--sc-ink); }
.reader__segs { display: flex; gap: 4px; width: clamp(6rem, 12vw, 9rem); }
.reader__segs i { flex: 1; height: 4px; border-radius: 2px; background: var(--surface-3); }
.reader__segs i.is-done { background: var(--sc-ink); }
.reader__segs i.is-now { background: var(--link); }
.reader > .status { padding: 10px 18px 0; font-size: 0.82rem; color: var(--sc-ink-soft); max-width: none; }
.is-done .reader > .status { color: var(--sc-ink-soft); }

/* ------------------------------------------ page four: the kept cards -- */
.keep { margin-top: var(--sc-7) !important; }
.keep__k { margin: 0 0 12px; font-family: var(--sc-font-mono); font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-faint); }
.keep__cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; max-width: 26rem; }
.kc { padding: 12px 14px; border-radius: 12px; background: #F4F1EA; color: #1A1A1A; border-top: 3px solid #2F7BF5; box-shadow: 0 2px 4px rgb(0 0 0 / 0.4), 0 12px 26px -10px rgb(0 0 0 / 0.7); }
.kc:nth-child(4n+1) { border-top-color: #E0452B; } .kc:nth-child(4n+2) { border-top-color: #F29A30; } .kc:nth-child(4n+3) { border-top-color: #3DBB6A; }
.kc__t { margin: 0; font-weight: 650; font-size: 0.92rem; letter-spacing: -0.01em; }
.kc__d { margin: 4px 0 0; font-size: 0.74rem; line-height: 1.4; color: #4A4740; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ------------------------------------------ close: lessons to start ---- */
.ix { padding: 0; }
.ix__a { display: flex; flex-direction: column; height: 100%; padding: 18px; color: inherit; text-decoration: none; border-radius: inherit; }
.ix__tag { align-self: flex-start; font-family: var(--sc-font-mono); font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; color: #5C5850; padding: 2px 7px; border-radius: 999px; background: #E6E1D6; }
.ix__t { display: block; margin-top: 10px; font-weight: 650; font-size: 1.08rem; line-height: 1.2; letter-spacing: -0.015em; }
.ix__d { display: block; margin-top: 6px; font-size: 0.82rem; line-height: 1.4; color: #4A4740; }
.ix__go { margin-top: auto; font-size: 0.8rem; font-weight: 600; color: #0761D1; }
.ix__a:focus-visible { outline-offset: -3px; }
@media (hover: hover) and (pointer: fine) {
  .ix:hover { box-shadow: 0 2px 4px rgb(0 0 0 / 0.4), 0 24px 46px -10px rgb(0 0 0 / 0.8), 0 0 0 2px var(--hue); }
  .ix:hover .ix__go { text-decoration: underline; }
}

@media (max-width: 860px) {
  .p2__stage { grid-template-columns: 1fr; grid-template-rows: auto minmax(0, 1fr); gap: 12px; padding-top: calc(var(--bar-h) + 1rem); padding-bottom: 12px; }
  .p2__side .sc-body, .p2__cap { display: none; }
  .notes { margin-top: 10px; gap: 6px; }
  .notes li { display: none; font-size: 0.84rem; padding-left: 24px; }
  .notes li.is-on:not(:has(~ li.is-on)) { display: block; }
  .notes li::before { width: 13px; height: 13px; }
  .reader__bar { padding: 10px 14px; }
  .reader__segs { width: 5rem; }
  .keep { display: none; }
  .topics .chip { font-size: 0.82rem; }
}
@media (max-width: 760px) {
  .ix__a { padding: 12px; }
  .ix__t { font-size: 0.9rem; margin-top: 8px; }
  .ix__d { font-size: 0.7rem; }
  .ix__go { font-size: 0.7rem; }
  .ix__tag { font-size: 0.56rem; }
}
@media (prefers-reduced-motion: reduce) {
  .topics__row { transform: none; flex-wrap: wrap; width: auto; justify-content: center; margin-left: 0 !important; }
  .topics__row:nth-child(n+3) { display: none; }
  .topics { -webkit-mask-image: none; mask-image: none; }
}

/* close: the topic cards open into an arc with no overlap, so every title reads */
.close__stage { --cw: clamp(10.5rem, 15vw, 14.5rem); }
.fan { height: clamp(14rem, 32vh, 18rem); }
.ix {
  width: var(--cw); margin-left: calc(var(--cw) / -2); height: auto; min-height: clamp(11rem, 24vh, 14rem);
  transform:
    translateX(calc(var(--k) * (var(--cw) + 1rem) * var(--f)))
    translateY(calc(var(--ak) * var(--ak) * 10px * var(--f) + (1 - var(--f)) * var(--ak) * -4px))
    rotate(calc(var(--k) * 2.5deg * var(--f) + (1 - var(--f)) * var(--k) * 1.2deg));
}
@media (max-width: 760px) {
  .fan { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; height: auto; }
  .ix { position: relative; left: auto; top: auto; margin: 0; width: auto; min-height: 0; transform: none !important; }
  .ix:nth-child(5) { display: none; }
  .ix__d { display: none; }
  .ix__go { margin-top: 10px; }
}
.ix { display: flex; }
.ix__a { flex: 1; height: auto; }
@media (max-width: 760px) and (max-height: 700px) { .foot p:nth-child(2) { display: none; } }
@media (max-width: 860px) { .p3__grid { grid-template-columns: 1fr; } }

.curve__legend { flex-direction: row !important; align-items: center; gap: 8px !important; margin-left: auto !important; font-family: var(--sc-font-text); font-size: 0.82rem; color: var(--sc-ink-soft); }
.lg { display: inline-block; width: 18px; height: 0; border-top: 2.5px solid var(--link); margin-left: 10px; }
.lg--off { border-top: 2px dashed #6B6B6B; }

/* ---------------------------------------- page five: the whole week ---- */
.p5__head { max-width: 46rem; }
.p5__head > * + * { margin-top: var(--sc-4); }
.week { margin-top: var(--sc-7); }
.week__top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.week__top .ask { margin: 0 !important; }
.week__goal { margin: var(--sc-6) 0 12px; display: flex; gap: 12px; align-items: baseline; font-size: 0.95rem; color: var(--sc-ink-soft); }
.week__goal span { font-size: 0.8rem; color: #A8A8A8; text-transform: uppercase; letter-spacing: 0.06em; }
.week__goal b { color: var(--sc-ink); font-weight: 550; }
.week__days { display: grid; grid-template-columns: repeat(auto-fill, minmax(10.5rem, 1fr)); gap: 10px; }
.week__days .day { width: auto; min-height: 0; padding: 14px; align-self: stretch; }
.week__days .day__f { font-size: 0.98rem; margin-bottom: 12px; }
.week__days .day li { padding: 8px; font-size: 0.82rem; }
.week__end { margin-top: var(--sc-5); display: grid; grid-template-columns: minmax(0, 26rem) minmax(0, 1fr); gap: var(--sc-5); align-items: end; }
.week__end .rail__note { padding-bottom: 6px; }

/* captions people can read: text face, larger, lighter (cold-read feedback) */
.p2__cap, .tutor__note, .curve figcaption, .rail__note, .keep__k {
  font-family: var(--sc-font-text); font-size: 0.86rem; letter-spacing: 0; text-transform: none; color: #A8A8A8; line-height: 1.5;
}
.keep__k { font-size: 0.86rem; }

/* the pause before the stream: short enough not to read as a broken page */
.p1__turn { margin-top: clamp(5rem, 14vh, 9rem); padding-bottom: clamp(5rem, 16vh, 10rem); }

@media (max-width: 760px) {
  .week__days { grid-template-columns: 1fr 1fr; }
  .week__end { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .week__days { grid-template-columns: 1fr; gap: 6px; }
  .week__days .day { flex-direction: row; align-items: baseline; gap: 10px; padding: 10px 12px; }
  .week__days .day__f { margin: 0; font-size: 0.9rem; }
  .week__days .day ul { display: none; }
}
@media (min-width: 861px) {
  .week__days { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
  .week__days .day { padding: 12px; }
  .week__days .day__f { font-size: 0.9rem; }
  .week__days .day li { grid-template-columns: 1fr; gap: 4px; font-size: 0.78rem; padding: 7px 8px; }
  .week__days .kind { justify-self: start; }
}
.week__end { grid-template-columns: minmax(0, 28rem); }

/* the history lesson's widgets */
.w-timeline__list { list-style: none; margin: 0; padding: 0 0 0 14px; border-left: 2px solid var(--line-strong); display: grid; gap: 12px; }
.w-timeline__list li { position: relative; display: grid; gap: 2px; font-size: 0.88rem; }
.w-timeline__list li::before { content: ""; position: absolute; left: -20px; top: 5px; width: 10px; height: 10px; border-radius: 50%; background: var(--sc-surface); border: 2px solid var(--link); }
.w-timeline__date { font-family: var(--sc-font-mono); font-size: 0.76rem; color: var(--link); }
.w-timeline__label { color: var(--sc-ink); font-weight: 550; }
.w-timeline__desc { color: var(--sc-ink-soft); }
.w-cycle__center { margin: 0 0 10px !important; font-weight: 600; color: var(--sc-ink) !important; }
.w-cycle__list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: 8px; counter-reset: st; }
.w-cycle__list li { counter-increment: st; padding: 10px; border-radius: 10px; background: var(--sc-canvas); border: 1px solid var(--line-strong); display: grid; gap: 2px; font-size: 0.82rem; }
.w-cycle__label::before { content: counter(st) ". "; color: var(--link); }
.w-cycle__label { color: var(--sc-ink); font-weight: 550; }
.w-cycle__desc { color: var(--sc-ink-soft); }
.w-cycle__loop { margin-top: 10px !important; font-size: 0.82rem !important; color: var(--sc-ink-soft) !important; }
.w-explain__field { width: 100%; margin-top: 10px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line-strong); background: var(--sc-canvas); color: var(--sc-ink); font-size: 0.9rem; resize: vertical; }
.w-explain__answer { margin-top: 12px; display: grid; gap: 6px; }
.w-explain__answer[hidden] { display: none; }

.yourturn__try { margin: -4px 2px 10px; font-size: 0.84rem; color: var(--sc-ink-soft); }
@media (max-width: 860px) { .yourturn__try { font-size: 0.74rem; margin: -2px 2px 8px; } }

.composer__note a { color: inherit; font-weight: 550; text-decoration-color: var(--link); text-underline-offset: 0.2em; }
/* the hero copy rides above the light layers: drifting dust and spectrum lightened the small
   note under the composer below 4.5:1 */
.hero__copy, .hero__beat { z-index: 6; }

/* the composer box is one field: text cursor across it, and the input fills its height */
.composer, .composer__row { cursor: text; }
.composer button, .composer label { cursor: pointer; }
.composer input { align-self: stretch; }
/* the second hero line sits over the composer, invisible until you scroll; it is display text and
   must never take the clicks meant for the field under it */
.hero__beat { pointer-events: none; }
/* typing in the hero: a phone scrolls the page up to make room for its keyboard, far enough that
   the copy's cue faded the composer out and made it untappable mid-word. While the composer has
   focus or text it stays put and the second line waits. (!important: the engine's cue styles are
   inline.) */
.hero__copy:focus-within, .hero__copy:has(input:not(:placeholder-shown)) { opacity: 1 !important; transform: none !important; pointer-events: auto !important; }
.hero__stage:has(.hero__copy :focus-within, .hero__copy input:not(:placeholder-shown)) .hero__beat { opacity: 0 !important; }

/* the close: how you start, in onboarding's own step names */
.steps { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 4px; counter-reset: step; font-size: 0.84rem; color: var(--sc-ink-soft); }
.steps[hidden] { display: none; }
.steps li { counter-increment: step; display: inline-flex; align-items: center; gap: 6px; }
.steps li::before { content: counter(step); display: inline-grid; place-items: center; width: 18px; height: 18px; border-radius: 50%; border: 1px solid var(--line-strong); font-family: var(--sc-font-mono); font-size: 0.66rem; color: var(--sc-ink); }
.steps li + li::after { content: none; }
/* wider than the composer it sits under, so the four steps fit on one line on desktop */
@media (min-width: 761px) { .steps { width: max(100%, 48rem); margin-left: 50%; transform: translateX(-50%); gap: 6px 18px; flex-wrap: nowrap; } }
@media (max-width: 760px) { .steps { font-size: 0.74rem; } }