/* ---------- the lab: porthole left, controls right, one screen ---------- */
.lab { display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); grid-template-areas: "stage head" "stage timeline" "stage controls"; grid-template-rows: auto auto 1fr; column-gap: clamp(2rem, 5vw, 5.5rem); row-gap: 2rem; min-height: calc(100svh - 4.5rem); padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(2.5rem, 5vw, 4rem); align-items: start; }
.lab__head { grid-area: head; padding-top: clamp(1rem, 4vh, 3rem); }
.lab__head h1 { font-size: clamp(2.75rem, 4.6vw, 4.5rem); line-height: 1.02; letter-spacing: -0.03em; }
.lab__head p { margin-top: 1rem; max-width: 30em; }
.lab__stage { grid-area: stage; position: sticky; top: 5.5rem; align-self: start; }
.lab__port { width: min(100%, calc(100svh - 14rem)); background: var(--z0); }
.lab__port canvas { width: 100%; height: 100%; }
.lab__year { position: absolute; left: 0; bottom: 3.25rem; font-size: clamp(3.5rem, 7.2vw, 7rem); font-weight: 600; letter-spacing: -0.05em; line-height: 0.85; color: var(--accent); pointer-events: none; }
.lab__note { margin-top: 1.25rem; display: flex; gap: 0.75rem; align-items: baseline; font-weight: 500; min-height: 3.2em; max-width: 34em; }
.lab__note .dot { color: var(--accent); }
@media (prefers-reduced-motion: no-preference) { .lab__note.is-new #note-text { animation: rise 600ms var(--ease-out); } }
.lab__controls { grid-area: controls; display: grid; gap: 1.4rem; align-content: start; }

.knobs { display: grid; gap: 1rem; }
.knob__top { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; font-weight: 500; }
.knob__top output { color: var(--accent); font-variant-numeric: tabular-nums; }
.knob__hint { color: var(--muted); font-size: var(--step-small); line-height: 1.5; }

/* range: a flat track, a flat fill, a round thumb */
.range { position: relative; height: 2.25rem; --p: 0.5; }
.range::before, .range__fill { content: ""; position: absolute; left: 0; top: 50%; height: 0.5rem; margin-top: -0.25rem; border-radius: 999px; pointer-events: none; }
.range::before { right: 0; background: var(--surface-2); }
.range__fill { width: calc(var(--p) * (100% - 1.75rem) + 0.875rem); background: var(--accent); }
.range input { position: relative; -webkit-appearance: none; appearance: none; width: 100%; height: 100%; margin: 0; background: transparent; cursor: pointer; }
.range input::-webkit-slider-runnable-track { height: 0.5rem; background: transparent; }
.range input::-moz-range-track { height: 0.5rem; background: transparent; }
.range input::-webkit-slider-thumb { -webkit-appearance: none; width: 1.75rem; height: 1.75rem; margin-top: -0.625rem; border-radius: 50%; background: var(--ink); border: 0; transition: transform var(--t-press) var(--ease-out); }
.range input::-moz-range-thumb { width: 1.75rem; height: 1.75rem; border-radius: 50%; background: var(--ink); border: 0; }
.range input:active::-webkit-slider-thumb { transform: scale(1.15); }
.range input:focus-visible { outline: none; }
.range input:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--accent); outline-offset: 3px; }
.knob .range__fill { transition: width 260ms var(--ease-out); }

.lab__timeline { grid-area: timeline; }
.timeline { display: grid; grid-template-columns: auto 1fr; gap: 1.25rem; align-items: start; }
.play { width: 4rem; height: 4rem; border-radius: 50%; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; transition: transform var(--t-press) var(--ease-out), background-color var(--t-hover) ease; }
.play svg { width: 1.6rem; height: 1.6rem; grid-area: 1 / 1; }
.play__stop { opacity: 0; }
.play.is-on .play__go { opacity: 0; }
.play.is-on .play__stop { opacity: 1; }
.play:active { transform: scale(0.93); }
@media (hover: hover) and (pointer: fine) { .play:hover { background: var(--accent-strong); } }
.timeline__track { position: relative; padding-top: 0.9rem; }
.range--year .range__fill { background: var(--ink); }
.timeline__marks { position: absolute; left: 0.875rem; right: 0.875rem; top: 0.35rem; height: 0.5rem; }
.timeline__marks li { position: absolute; top: 0; width: 0.5rem; height: 0.5rem; margin-left: -0.25rem; border-radius: 50%; background: var(--accent); transition: transform 300ms var(--ease-out); }
.timeline__marks li.is-past { transform: scale(1.4); }
.timeline__ticks { display: flex; justify-content: space-between; margin-top: 0.15rem; color: var(--muted); font-size: var(--step-small); }

@media (max-width: 60em) {
  .lab { grid-template-columns: 1fr; grid-template-areas: "head" "timeline" "stage" "controls"; min-height: 0; row-gap: 1.75rem; }
  .lab__head { padding-top: 1.5rem; }
  .lab__stage { position: relative; top: 0; }
  .lab__port { width: 100%; }
  .lab__year { position: static; font-size: clamp(3rem, 14vw, 5rem); margin-top: 1rem; }
  .lab__note { margin-top: 0.5rem; }
}

/* ---------- results ---------- */
.results { padding-top: clamp(3rem, 6vw, 5rem); }
.results__tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.tile { display: flex; flex-direction: column; justify-content: space-between; gap: 2rem; min-height: 10.5rem; padding: 1.5rem; background: var(--surface); text-align: left; transition: background-color var(--t-hover) ease, color var(--t-hover) ease; }
.tile:first-child { border-top-left-radius: 5rem; padding-left: 2.5rem; }
.tile:last-child { border-top-right-radius: 5rem; }
.tile__num { font-size: clamp(2.25rem, 3.6vw, 3.5rem); font-weight: 600; letter-spacing: -0.03em; line-height: 1; }
.tile__num small { font-size: 0.42em; letter-spacing: 0; margin-left: 0.15em; font-weight: 500; }
.tile__name { font-weight: 500; display: flex; align-items: center; gap: 0.6rem; }
.tile__name::after { content: ""; width: 0.5rem; height: 0.5rem; border-radius: 50%; background: currentColor; opacity: 0; transition: opacity var(--t-hover) ease; }
.tile[aria-selected="true"] { background: var(--ink); color: var(--bg); }
.tile[aria-selected="true"] .tile__name::after { opacity: 1; }
.tile .is-bad { color: var(--accent); }
.tile[aria-selected="true"] .is-bad { color: #b83f20; }
@media (hover: hover) and (pointer: fine) { .tile:not([aria-selected="true"]):hover { background: var(--surface-2); } }

.results__body { margin-top: 8px; display: grid; grid-template-columns: minmax(0, 8fr) minmax(0, 4fr); gap: 8px; }
.chart { background: var(--surface); padding: 1.5rem 1.5rem 1rem; display: grid; gap: 0.75rem; }
.chart canvas { width: 100%; height: 300px; }
.chart__key { display: flex; gap: 1.5rem; font-size: var(--step-small); font-weight: 500; }
.chart__key span { display: inline-flex; align-items: center; gap: 0.5rem; }
.chart__key span::before { content: ""; width: 1.25rem; height: 0.3rem; border-radius: 999px; }
.chart__you::before { background: var(--accent); }
.chart__base::before { background: var(--muted); }
.log { background: var(--surface); padding: 1.75rem; border-bottom-right-radius: 5rem; }
.log__h { font-size: var(--step-lead); line-height: 1.3; margin-bottom: 1.25rem; }
.log__list { display: grid; gap: 1rem; }
.log__list li { display: grid; grid-template-columns: 3.5rem 1fr; gap: 0.75rem; align-items: baseline; transition: opacity 300ms ease; }
.log__list li b { font-variant-numeric: tabular-nums; font-weight: 600; }
.log__list li.is-future { opacity: 0.5; }
.log__list li.is-past b { color: var(--accent); }
.results__verdict { margin-top: 2.5rem; font-size: var(--step-lead); line-height: 1.45; max-width: 34em; font-weight: 500; }
.results__note { margin-top: 1rem; max-width: 60em; }
@media (max-width: 60em) {
  .results__tiles { grid-template-columns: 1fr 1fr; }
  .tile { min-height: 8rem; gap: 1.25rem; }
  .tile:first-child { border-top-left-radius: 3rem; padding-left: 2rem; }
  .tile:last-child { border-top-right-radius: 0; }
  .tile:nth-child(2) { border-top-right-radius: 3rem; }
  .results__body { grid-template-columns: 1fr; }
  .chart canvas { height: 240px; }
  .log { border-bottom-right-radius: 3rem; }
}

/* ---------- habits ---------- */
.habits { padding-top: var(--section); }
.habits__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: 3rem; align-items: start; }
.habits__intro { grid-column: 1 / 6; position: sticky; top: 6.5rem; display: grid; gap: 1.5rem; }
.habits__result { margin-top: 1rem; display: grid; gap: 0.9rem; justify-items: start; }
.habits__num { display: flex; align-items: center; gap: 0.35em; font-size: clamp(3.5rem, 6vw, 6rem); font-weight: 600; letter-spacing: -0.04em; line-height: 0.9; }
.habits__num #h-from { color: var(--muted); }
.habits__num #h-to { color: var(--accent); }
.habits__num small { font-size: 0.4em; letter-spacing: 0; align-self: flex-end; margin-bottom: 0.2em; }
.habits__arrow { width: 0.55em; height: 0.55em; color: var(--ink); }
.habits__list { grid-column: 7 / 13; display: grid; gap: 8px; }
.habit { width: 100%; display: grid; grid-template-columns: 4.5rem 1fr auto; gap: 1.25rem; align-items: center; padding: 1rem 1.5rem 1rem 1rem; background: var(--surface); border-radius: 999px; text-align: left; transition: background-color var(--t-hover) ease, transform var(--t-press) var(--ease-out); }
.habit:active { transform: scale(0.985); }
.habit b { display: block; font-size: 1.125rem; line-height: 1.35; }
.habit .habit__fx { display: block; margin-top: 0.2rem; color: var(--muted); font-size: 0.9375rem; }
.switch { width: 3.25rem; height: 1.9rem; border-radius: 999px; background: var(--surface-2); position: relative; flex: none; transition: background-color var(--t-ui) ease; }
.switch::after { content: ""; position: absolute; top: 0.25rem; left: 0.25rem; width: 1.4rem; height: 1.4rem; border-radius: 50%; background: var(--muted); transition: transform var(--t-ui) var(--ease-out), background-color var(--t-ui) ease; }
.habit[aria-pressed="true"] { background: var(--surface-2); }
.habit[aria-pressed="true"] .switch { background: var(--accent); }
.habit[aria-pressed="true"] .switch::after { transform: translateX(1.35rem); background: var(--accent-ink); }
.habit[aria-pressed="true"] .habit__fx { color: var(--ink); }
@media (hover: hover) and (pointer: fine) { .habit:hover { background: var(--surface-2); } }
@media (max-width: 60em) { .habits__intro, .habits__list { grid-column: 1 / -1; } .habits__intro { position: static; } .habit { grid-template-columns: 3.5rem 1fr auto; border-radius: 2rem; padding: 0.9rem 1.1rem 0.9rem 0.9rem; gap: 1rem; } }

/* ---------- one frame, contents change ---------- */
.frame { padding-top: var(--section); }
.frame__grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); column-gap: var(--gutter); row-gap: 3rem; align-items: center; }
.frame__text { grid-column: 1 / 6; display: grid; gap: 1.5rem; }
.frame__fig { grid-column: 7 / 12; justify-self: center; display: grid; gap: 16px; justify-items: center; padding-block: 10vh; }
.frame__port { position: relative; width: min(40vw, 32rem); cursor: pointer; }
.frame__port img { position: absolute; inset: 0; opacity: 0; transition: opacity 600ms ease; }
.frame__port img.is-on { opacity: 1; }
.frame__port img:first-child { position: relative; }
.frame__cap { font-size: var(--step-small); color: var(--muted); text-align: center; min-height: 1.5em; }
@media (max-width: 52em) { .frame__text, .frame__fig { grid-column: 1 / -1; } .frame__fig { padding-block: 2rem; } .frame__port { width: 72vw; } }

/* ---------- endangered list ---------- */
.endangered { padding-top: var(--section); padding-bottom: var(--section); }
.end__top { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem var(--gutter); align-items: end; margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.end__head, .end__row { display: grid; grid-template-columns: 4fr 4fr 4fr; column-gap: var(--gutter); }
.end__head { color: var(--muted); font-weight: 500; padding: 0 0 1rem; }
.end__list { display: grid; gap: 6px; }
.end__row { padding: 1.5rem 0; align-items: start; }
.end__row:nth-child(odd) { background: var(--surface); margin-inline: calc(var(--margin) * -1); padding-inline: var(--margin); }
.end__sp { display: grid; grid-template-columns: 4.5rem 1fr; gap: 1.1rem; align-items: center; text-decoration: none; }
.end__sp .port { transition: transform 500ms var(--ease-out); }
.end__sp b { display: block; font-size: 1.25rem; }
.end__help { font-weight: 500; }
@media (hover: hover) and (pointer: fine) { .end__sp:hover .port { transform: scale(1.08); } }
@media (max-width: 52em) {
  .end__top { grid-template-columns: 1fr; }
  .end__head { display: none; }
  .end__row { grid-template-columns: 1fr; row-gap: 0.9rem; }
  .end__help::before { content: "你能做的："; color: var(--accent); }
}