/* Layout: one narrow answer-sheet column; the quiz is one item per screen, the result is a 30-facet profile sheet drawn on one 1–5 scale. */
:root {
  --paper: #F2F4F8;
  --sheet: #FFFFFF;
  --ink: #18202E;
  --ink-2: #4F596C;
  --ink-3: #7A8395;
  --rule: #D8DDE6;
  --accent: #24418F;
  --accent-ink: #FFFFFF;
  --accent-soft: #E4E9F6;
  --zone: #ECEFF4;
  --zone-mid: #F6F7FA;
  --dN: #B0503A;
  --dE: #A97614;
  --dO: #2D7A69;
  --dA: #3B68A8;
  --dC: #6A4C9C;
  --ok: #2D7A55;
  --f-display: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --f-body: -apple-system, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F131A; --sheet: #171C26; --ink: #E5E9F0; --ink-2: #A6AFBF; --ink-3: #7D8698;
    --rule: #2A3141; --accent: #90A8EA; --accent-ink: #0F131A; --accent-soft: #1F2945;
    --zone: #1F2533; --zone-mid: #1A202C;
    --dN: #E3907A; --dE: #E2B661; --dO: #6CC3AE; --dA: #88ABE2; --dC: #B39BDD; --ok: #6CC79A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F131A; --sheet: #171C26; --ink: #E5E9F0; --ink-2: #A6AFBF; --ink-3: #7D8698;
  --rule: #2A3141; --accent: #90A8EA; --accent-ink: #0F131A; --accent-soft: #1F2945;
  --zone: #1F2533; --zone-mid: #1A202C;
  --dN: #E3907A; --dE: #E2B661; --dO: #6CC3AE; --dA: #88ABE2; --dC: #B39BDD; --ok: #6CC79A;
  color-scheme: dark;
}

* { box-sizing: border-box; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.6;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 20px 40px;
}
.wrap { max-width: 620px; margin: 0 auto; display: grid; gap: 20px; }
h1, h2, h3 { margin: 0; text-wrap: balance; }
p { margin: 0; }
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.eyebrow { font-family: var(--f-mono); font-size: 12px; letter-spacing: .08em; color: var(--ink-3); text-transform: uppercase; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }

button { font: inherit; color: inherit; cursor: pointer; }
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn {
  border: 1px solid var(--rule); background: var(--sheet); border-radius: 10px;
  padding: 10px 16px; font-size: 15px;
}
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-2); padding-inline: 8px; }
.btn:disabled { opacity: .4; cursor: default; }
.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.sheet { background: var(--sheet); border: 1px solid var(--rule); border-radius: 14px; padding: 20px; display: grid; gap: 16px; }

/* ---------- intro ---------- */
.intro-head { display: grid; gap: 8px; padding-top: 8px; }
.intro-head h1 { font-family: var(--f-display); font-size: clamp(28px, 7vw, 36px); font-weight: 700; letter-spacing: .02em; }
.facts { display: flex; flex-wrap: wrap; gap: 6px 14px; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.rules { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }
.rules li::marker { color: var(--accent); }
.note { font-size: 13px; color: var(--ink-2); border-top: 1px solid var(--rule); padding-top: 12px; }

/* ---------- quiz ---------- */
.qtop { display: grid; gap: 10px; }
.qcount { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.qcount b { color: var(--ink); font-size: 18px; font-weight: 500; }
.track { height: 4px; background: var(--zone); border-radius: 2px; overflow: hidden; }
.track > i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .25s ease; }
.item { display: grid; gap: 10px; padding-block: 18px 6px; min-height: 9.5em; align-content: start; }
.item-zh { font-family: var(--f-display); font-weight: 500; font-size: clamp(22px, 6vw, 28px); line-height: 1.45; text-wrap: balance; }
.item-en { font-size: 13px; color: var(--ink-3); }
.item-tag { font-size: 12px; color: var(--ink-3); border: 1px dashed var(--rule); border-radius: 6px; padding: 2px 8px; justify-self: start; }
.flag { justify-self: start; font-size: 12px; color: var(--ink-3); background: transparent; border: 1px dashed var(--rule); border-radius: 999px; padding: 3px 10px; }
.flag[aria-pressed="true"] { color: var(--dN); border-color: var(--dN); border-style: solid; }
.item-hint { font-size: 13px; color: var(--ink-2); background: var(--accent-soft); border-radius: 8px; padding: 6px 10px; justify-self: start; }
.grid-panel { display: grid; gap: 10px; }
.cells { display: grid; grid-template-columns: repeat(10, minmax(0, 1fr)); gap: 4px; }
.cell { position: relative; font-family: var(--f-mono); font-size: 12px; padding: 6px 0; border: 1px solid var(--rule); border-radius: 6px; background: var(--sheet); color: var(--ink-3); }
.cell.done { background: var(--accent-soft); color: var(--ink); }
.cell.cur { outline: 2px solid var(--accent); outline-offset: -1px; }
.cell.flag::after { content: ""; position: absolute; top: 3px; right: 3px; width: 5px; height: 5px; border-radius: 50%; background: var(--dN); }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--ink-3); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; border: 1px solid var(--rule); vertical-align: -1px; margin-right: 4px; }
.legend i.d { background: var(--accent-soft); }
.legend i.f { border-radius: 50%; border: 0; background: var(--dN); width: 6px; height: 6px; vertical-align: 1px; }
.restore summary { cursor: pointer; color: var(--accent); font-size: 14px; }
.restore[open] { display: grid; gap: 10px; }
.restore textarea { width: 100%; min-height: 96px; resize: vertical; border: 1px solid var(--rule); border-radius: 10px; background: var(--paper); color: var(--ink); font-family: var(--f-mono); font-size: 12px; padding: 10px; }
.qa { display: grid; border-top: 1px solid var(--rule); }
.qa-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; gap: 2px 12px; align-items: baseline; padding: 8px 0; border-bottom: 1px solid var(--rule); }
.qa-row b { font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-weight: 500; }
.qa-row .why { grid-column: 1 / -1; font-size: 12px; color: var(--ink-3); }
.st { font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink-2); white-space: nowrap; }
.st.ok { color: var(--ok); border-color: var(--ok); }
.st.warn { color: var(--dE); border-color: var(--dE); }
.opts { display: grid; gap: 8px; }
.opt {
  display: grid; grid-template-columns: 76px 1fr; align-items: center; gap: 12px;
  text-align: left; padding: 12px 14px; border-radius: 12px;
  border: 1px solid var(--rule); background: var(--sheet);
  transition: background .12s, border-color .12s;
}
@media (hover: hover) { .opt:hover { border-color: var(--accent); } }
.opt[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); }
.pips { display: flex; gap: 5px; }
.pips i { width: 10px; height: 10px; border-radius: 50%; border: 1.5px solid var(--ink-3); }
.pips i.on { background: var(--ink-2); border-color: var(--ink-2); }
.opt[aria-pressed="true"] .pips i.on { background: var(--accent); border-color: var(--accent); }
.opt-label { font-size: 16px; }
.qfoot { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.kbd-hint { font-size: 12px; color: var(--ink-3); }
@media (hover: none) { .kbd-hint .k { display: none; } }

/* ---------- scale + bars ---------- */
.scale { position: relative; height: 34px; margin-left: var(--lab, 0px); }
.scale span { position: absolute; top: 0; transform: translateX(-50%); font-family: var(--f-mono); font-size: 11px; color: var(--ink-3); }
.scale span:first-child { transform: none; }
.scale span.last { transform: translateX(-100%); }
.scale em { position: absolute; bottom: 0; transform: translateX(-50%); font-style: normal; font-size: 11px; color: var(--ink-3); letter-spacing: .04em; white-space: nowrap; }

.bar {
  position: relative; height: 12px; border-radius: 6px;
  background: linear-gradient(to right, var(--zone) 0 37.5%, var(--zone-mid) 37.5% 62.5%, var(--zone) 62.5% 100%);
}
.bar .fill { position: absolute; left: 0; top: 0; bottom: 0; border-radius: 6px; background: var(--c); opacity: .3; }
.bar .dot { position: absolute; top: 50%; width: 14px; height: 14px; border-radius: 50%; background: var(--c); border: 2px solid var(--sheet); transform: translate(-50%, -50%); }

.dom-list { display: grid; gap: 14px; }
.dom { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; align-items: baseline; }
.dom .name { display: flex; align-items: baseline; gap: 8px; min-width: 0; }
.code { font-family: var(--f-mono); font-weight: 500; font-size: 12px; color: var(--c); }
.dom .name strong { font-size: 16px; font-weight: 600; }
.dom .val { display: flex; align-items: baseline; gap: 8px; }
.dom .val .num { font-family: var(--f-mono); font-size: 18px; font-variant-numeric: tabular-nums; }
.dom .bar { grid-column: 1 / -1; }
.lvl { font-size: 12px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--rule); color: var(--ink-2); white-space: nowrap; }
.lvl.hi { border-color: var(--c); color: var(--c); }
.lvl.lo { border-style: dashed; }
.sample-tag { font-size: 12px; color: var(--ink-3); }

/* ---------- results ---------- */
.res-head { display: grid; gap: 6px; padding-top: 8px; }
.res-head h1 { font-family: var(--f-display); font-size: clamp(26px, 6.5vw, 34px); font-weight: 700; }
.sec-title { font-family: var(--f-display); font-size: 19px; font-weight: 700; }
.sec-head { display: grid; gap: 4px; }

.extremes { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.ext { display: grid; gap: 10px; align-content: start; }
.ext h3 { font-size: 13px; font-weight: 600; color: var(--ink-2); letter-spacing: .04em; }
.ext-item { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 2px 10px; align-items: baseline; }
.ext-item .desc { grid-column: 2 / -1; font-size: 13px; color: var(--ink-2); }
.ext-item .num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }

.domain-block { display: grid; gap: 14px; }
.domain-block + .domain-block { border-top: 1px solid var(--rule); padding-top: 18px; }
.db-head { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 4px 12px; align-items: baseline; }
.db-head h3 { font-size: 17px; display: flex; gap: 8px; align-items: baseline; }
.db-head .about { grid-column: 1 / -1; font-size: 13px; color: var(--ink-2); }
.db-head .num { font-family: var(--f-mono); font-size: 18px; }
.facets { display: grid; gap: 12px; }
.facet { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 4px 10px; align-items: baseline; }
.facet .fname { font-size: 15px; }
.facet .num { font-family: var(--f-mono); font-variant-numeric: tabular-nums; font-size: 14px; }
.facet .bar { grid-column: 2 / -1; height: 8px; }
.facet .bar .dot { width: 11px; height: 11px; }
.facet .desc { grid-column: 2 / -1; font-size: 13px; color: var(--ink-2); }

.copybox { display: grid; gap: 10px; }
.copybox textarea {
  width: 100%; min-height: 180px; resize: vertical; border: 1px solid var(--rule); border-radius: 10px;
  background: var(--paper); color: var(--ink); font-family: var(--f-mono); font-size: 12px; line-height: 1.5; padding: 10px;
}
.status { font-size: 13px; color: var(--ok); min-height: 1.4em; }
.pairs { display: grid; }
.pair { display: grid; gap: 10px; padding-block: 14px; border-top: 1px solid var(--rule); }
.pair:first-child { border-top: 0; padding-top: 4px; }
.pair-head { display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap; }
.pair-head strong { font-size: 15px; }
.pair-why { font-size: 12px; color: var(--ink-3); }
.pair-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 12px; align-items: center; }
.pair-item .q { font-size: 15px; min-width: 0; }
.pair-item .a { grid-column: 1; font-size: 13px; color: var(--ink-2); }
.pair-item .btn { grid-column: 2; grid-row: 1 / span 2; padding: 6px 14px; font-size: 13px; }
.ok-line { font-size: 14px; color: var(--ok); }
.jump { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; }
.jump input { width: 4.2em; font: inherit; font-family: var(--f-mono); padding: 8px 10px; border: 1px solid var(--rule); border-radius: 10px; background: var(--sheet); color: var(--ink); text-align: center; }
.pair-actions { display: flex; justify-content: flex-end; }
.confirmed { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: baseline; font-size: 13px; color: var(--ink-3); border-top: 1px solid var(--rule); padding-top: 12px; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--accent); font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
.caveats { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; font-size: 13px; color: var(--ink-2); }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}