:root {
  color-scheme: dark;
  --bg: #101815;
  --surface: #18231e;
  --stage: #1c2a23;
  --ink: #f3f6ec;
  --muted: #aabaae;
  --line: #37473d;
  --accent: #b9ed9b;
  --accent-ink: #1b2e1d;
  --radius: 15px;
  font: 16px/1.6 "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  scrollbar-color: #596e5f var(--bg);
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; min-width: 290px; }
h1, h2, h3, p, ol, dl, dd { margin: 0; }
a { color: inherit; text-underline-offset: .25em; }
::selection { color: var(--accent-ink); background: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.frame { width: min(1216px, calc(100% - 80px)); margin-inline: auto; }
.top { border-bottom: 1px solid var(--line); }
.top-inner { display: flex; justify-content: space-between; align-items: center; min-height: 72px; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 800 22px/1 system-ui, sans-serif; }
.brand span { padding-inline-start: 11px; border-inline-start: 1px solid var(--line); color: var(--muted); font: 500 13px/1.2 "PingFang SC", "Microsoft YaHei", sans-serif; white-space: nowrap; }
.service { color: var(--muted); font-size: .8rem; }
.intro { padding: 44px 0 31px; }
h1 { font-size: clamp(2.35rem, 5vw, 4rem); line-height: 1.08; letter-spacing: -.035em; font-weight: 750; }
.intro p { color: var(--muted); margin-top: 12px; }
.workspace { display: grid; grid-template-columns: minmax(230px, 270px) minmax(0, 1fr); gap: 24px; align-items: start; }
aside { padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
aside h2, .board-head h2 { font-size: 1rem; font-weight: 650; }
label { display: block; color: var(--muted); margin: 18px 0 5px; font-size: .82rem; }
select, input, textarea, button { font: inherit; }
select, input, textarea { width: 100%; background: #111b16; color: var(--ink); border: 1px solid #43554a; border-radius: 8px; padding: 9px 11px; min-height: 43px; caret-color: var(--accent); }
::placeholder { color: #a3b2a6; }
textarea { resize: vertical; }
button { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 42px; border: 1px solid transparent; border-radius: 8px; padding: 8px 13px; font-size: .88rem; font-weight: 650; color: var(--accent-ink); background: var(--accent); cursor: pointer; }
button svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
button:hover:not(:disabled) { background: #d4f5c4; }
button.secondary { color: var(--ink); background: transparent; border-color: #53685a; }
button.secondary:hover:not(:disabled) { background: #2c3d32; }
button:disabled { cursor: default; opacity: .49; }
#prepare { width: 100%; margin-top: 8px; }
.transport { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin-top: 20px; }
.notice { margin-top: 11px; color: var(--muted); font-size: .78rem; min-height: 2.6em; }
#key-panel { margin-top: 15px; border-top: 1px solid var(--line); }
summary { cursor: pointer; padding: 13px 0; font-size: .9rem; font-weight: 600; }
summary::marker { color: var(--accent); }
#key-form label { margin-top: 0; }
form button { margin-top: 8px; }
.stage { border: 1px solid #485c4f; border-radius: var(--radius); background: var(--stage); overflow: hidden; }
.board-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 14px 24px; border-bottom: 1px solid var(--line); }
#signal { display: inline-flex; align-items: center; gap: 7px; color: var(--muted); font-size: .79rem; }
#signal i { width: 7px; height: 7px; border-radius: 50%; background: #819388; }
#signal[data-live="true"] { color: var(--accent); }
#signal[data-live="true"] i { background: var(--accent); }
.transcript { min-height: 166px; padding: 21px 24px 24px; }
h3 { display: flex; align-items: center; gap: 8px; font-size: .84rem; color: var(--muted); font-weight: 550; }
.code { display: inline-grid; place-items: center; min-width: 29px; height: 22px; border: 1px solid #53685a; border-radius: 4px; padding: 0 4px; font: 700 10px/1 system-ui, sans-serif; letter-spacing: .08em; }
#english { font: 620 clamp(1.4rem, 3.2vw, 2.35rem)/1.35 system-ui, "PingFang SC", sans-serif; margin-top: 13px; overflow-wrap: anywhere; }
#english[data-empty="true"] { color: var(--muted); font-size: clamp(1.25rem, 2.5vw, 1.8rem); font-weight: 500; }
.draft { color: var(--muted); font-size: .88rem; margin-top: 7px; overflow-wrap: anywhere; }
.pair { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); }
.caption { min-width: 0; min-height: 151px; padding: 20px 24px; }
.caption + .caption { border-inline-start: 1px solid var(--line); }
.caption p { font-size: clamp(1.05rem, 2.3vw, 1.55rem); line-height: 1.5; margin-top: 10px; overflow-wrap: anywhere; }
.primary-caption { background: #233629; }
.primary-caption h3, .primary-caption p { color: var(--accent); }
.job:has(p:empty):has(button[hidden]) { display: none; }
.job { padding: 0 24px 15px; color: var(--muted); font-size: .85rem; }
.extras { margin-top: 13px; }
.extras details { border-bottom: 1px solid var(--line); }
.extras form, #all, #history, #clear { margin-bottom: 14px; }
.extras label { margin-top: 0; }
#all { display: grid; grid-template-columns: 6em minmax(0, 1fr); gap: 8px 12px; }
#all dt { color: var(--muted); }
#all dd { overflow-wrap: anywhere; }
#history { padding-left: 24px; }
#history button { text-align: left; justify-content: flex-start; background: transparent; color: var(--ink); overflow-wrap: anywhere; max-width: 100%; }
#history button:hover, #history button[aria-current="true"] { color: var(--accent); background: #233629; }
.count { color: var(--muted); margin-left: 5px; font-variant-numeric: tabular-nums; }
footer { color: var(--muted); font-size: .78rem; padding: 22px 0 30px; max-width: 75ch; }
@media (max-width: 820px) {
  .frame { width: calc(100% - 40px); }
  .workspace { grid-template-columns: minmax(0, 1fr); gap: 15px; }
  aside { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
  aside > * { grid-column: 1 / -1; }
}
@media (max-width: 500px) {
  .frame { width: calc(100% - 30px); }
  .top-inner { min-height: 60px; gap: 12px; }
  .brand span { display: none; }
  .intro { padding: 27px 0 22px; }
  .intro p { font-size: .88rem; }
  aside, .transcript, .caption { padding: 15px; }
  .board-head { padding-inline: 15px; }
  .transcript { min-height: 118px; }
  .caption { min-height: 94px; }
  .pair { grid-template-columns: 1fr; }
  .caption + .caption { border-inline-start: 0; border-top: 1px solid var(--line); }
}