:root {
  --bg: #f6f6f4;
  --card: #fff;
  --ink: #1c1c1a;
  --muted: #6b6b66;
  --line: #e2e2dd;
  --accent: #2f6f5e;
  --accent-soft: #e8f1ee;
  --warn: #b4471f;
  --radius: 10px;
  --wrap: 42rem;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 1.1rem; }

/* header */
.site-header { background: var(--card); border-bottom: 1px solid var(--line); }
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: .75rem; padding-top: .85rem; padding-bottom: .85rem;
}
.brand { display: flex; flex-direction: column; }
.brand-title { font-weight: 650; letter-spacing: .01em; }
.brand-sub { font-size: .8rem; color: var(--muted); }
.badge {
  background: var(--warn); color: #fff; font-size: .72rem;
  padding: .18rem .5rem; border-radius: 99px; white-space: nowrap;
}

/* progress */
.progress { height: 3px; background: var(--line); }
.progress-bar { height: 100%; background: var(--accent); transition: width .3s ease; }

main.wrap { padding-top: 1.6rem; padding-bottom: 3rem; }

h1 { font-size: 1.35rem; margin: 0 0 .3rem; }
h2 { font-size: 1.05rem; margin: 0 0 .7rem; }
.lede { color: var(--muted); margin: 0 0 1.2rem; }
.counter { color: var(--muted); font-size: .85rem; margin: 0 0 .6rem; }
.hint { color: var(--muted); font-size: .87rem; }

/* card */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.35rem 1.5rem; margin: 0 0 1rem;
}
.card.invalid { border-color: var(--warn); }
fieldset.card { border: 1px solid var(--line); }
legend { font-weight: 600; padding: 0 .35rem; line-height: 1.5; }
.req { color: var(--warn); margin-left: .2rem; }

/* prose */
.prose h3, .prose h4 { font-size: 1rem; margin: 1.3rem 0 .4rem; }
.prose h3:first-child, .prose h4:first-child { margin-top: 0; }
.prose p { margin: .55rem 0; }
.prose ul, .prose ol { margin: .5rem 0; padding-left: 1.3rem; }
.prose li { margin: .25rem 0; }
.prose blockquote {
  margin: .8rem 0; padding: .55rem .9rem;
  background: var(--accent-soft); border-radius: 6px; color: #2b4c43;
}

/* vignette */
.vignette { background: #fffdf7; border-color: #e8e0cc; padding: 1.6rem 1.75rem; }
.domain {
  display: inline-block; font-size: .78rem; color: var(--accent);
  background: var(--accent-soft); padding: .12rem .55rem;
  border-radius: 99px; margin: 0 0 .6rem;
}
.vignette-text { font-size: 1.12rem; line-height: 1.9; margin: 0; }

/* choices */
.choice, .check {
  display: flex; align-items: flex-start; gap: .6rem;
  padding: .5rem .1rem; cursor: pointer;
}
.choice input, .check input { margin-top: .42rem; flex: none; }
.choice.big {
  border: 1px solid var(--line); border-radius: 8px;
  padding: .95rem 1.05rem; margin-bottom: .6rem; transition: .15s;
}
.choice.big:hover { border-color: var(--accent); background: #fbfdfc; }
.choice.big:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
/* 标题与描述用专门的类，避免影响描述文字内部的 <strong>/<em>（否则加粗处会另起一行） */
.opt { display: block; }
.opt-title { display: block; font-weight: 650; }
.opt-desc  { display: block; color: var(--muted); font-size: .89rem; margin-top: .25rem; }
.opt-desc strong { font-weight: 650; color: var(--ink); }
.opt-desc em { font-style: normal; }
.choice.escape { border-style: dashed; }

.followup { display: none; padding: 0 0 .6rem .3rem; }
.choice.escape:has(input:checked) + .followup { display: block; }

/* scales */
.scale { display: flex; flex-wrap: wrap; gap: .5rem; }
.scale.vertical { flex-direction: column; }
.scale-item {
  display: flex; align-items: center; gap: .4rem;
  border: 1px solid var(--line); border-radius: 7px;
  padding: .45rem .7rem; cursor: pointer; font-size: .9rem;
}
.scale-item:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }

/* fields */
.field { display: block; margin-top: .7rem; }
.field span { display: block; font-size: .88rem; color: var(--muted); margin-bottom: .3rem; }
textarea, .text-inline {
  width: 100%; font: inherit; font-size: .95rem;
  padding: .55rem .7rem; border: 1px solid var(--line);
  border-radius: 7px; background: #fff; resize: vertical;
}
textarea:focus, .text-inline:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.text-inline { margin-top: .4rem; }

.defs { padding-left: 1.2rem; }
.defs li { margin-bottom: .7rem; }
.defs p { margin: .2rem 0 0; color: var(--muted); font-size: .9rem; }

/* buttons */
.actions { display: flex; gap: .6rem; margin-top: 1.2rem; }
.actions.split { justify-content: space-between; }
.btn {
  font: inherit; font-size: .95rem; padding: .62rem 1.4rem;
  border-radius: 8px; border: 1px solid var(--line);
  background: #fff; color: var(--ink); cursor: pointer; text-decoration: none;
  display: inline-block;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { color: var(--muted); }

.alert {
  background: #fdece5; border: 1px solid #f0c4b0; color: var(--warn);
  padding: .7rem .95rem; border-radius: 8px; margin-bottom: 1rem; font-size: .92rem;
}

.site-footer { color: var(--muted); font-size: .8rem; padding-bottom: 2rem; }

/* admin */
.kpis { display: flex; flex-wrap: wrap; gap: 1.4rem; }
.kpi { display: flex; flex-direction: column; }
.kpi b { font-size: 1.5rem; line-height: 1.2; }
.kpi span { font-size: .8rem; color: var(--muted); }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table.small { font-size: .82rem; }
.table th, .table td { border-bottom: 1px solid var(--line); padding: .42rem .5rem; text-align: left; }
.table th { color: var(--muted); font-weight: 600; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table .warn { color: var(--warn); font-weight: 600; }
details { border-bottom: 1px solid var(--line); padding: .5rem 0; }
summary { cursor: pointer; font-size: .9rem; }
blockquote { margin: .4rem 0 .8rem; padding-left: .8rem; border-left: 3px solid var(--line); color: #3d3d38; }
.q { font-size: .82rem; color: var(--muted); margin: .6rem 0 .1rem; }
.note { font-size: .82rem; color: var(--warn); }
code { background: #efefeb; padding: .05rem .3rem; border-radius: 4px; font-size: .85em; }

/* admin 页更宽 */
body:has(.kpis) { --wrap: 62rem; }

@media (max-width: 480px) {
  .vignette-text { font-size: 1.05rem; }
  .actions { flex-direction: column-reverse; }
  .btn { width: 100%; text-align: center; }
  .actions.split { flex-direction: column-reverse; }
}


/* ---- 滑块量表 ---- */
.slider-wrap { padding: .4rem .2rem 0; }
.slider-value {
  display: block; text-align: center; font-weight: 650;
  color: var(--muted); min-height: 1.8rem; margin-bottom: .9rem;
  font-size: .95rem;
}
.slider-value.chosen { color: var(--accent); }

.slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: 99px;
  background: linear-gradient(to right, var(--line), var(--accent-soft), var(--line));
  outline: none; margin: 0;
}
.slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 1px 5px rgba(0,0,0,.25); cursor: pointer;
}
.slider::-moz-range-thumb {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 1px 5px rgba(0,0,0,.25); cursor: pointer;
}
.slider:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 4px; }

.slider-ticks {
  display: flex; justify-content: space-between;
  margin-top: .45rem; padding: 0 .2rem;
  font-size: .78rem; color: var(--muted); font-variant-numeric: tabular-nums;
}
.slider-ends {
  display: flex; justify-content: space-between; gap: 1.5rem;
  margin-top: .5rem; font-size: .82rem; color: var(--muted);
}
.slider-ends span { max-width: 44%; }
.slider-ends span:last-child { text-align: right; }

/* ---- 三类示意（_regimes.html） ----
   只画结构：紫方块=动作事件，绿圆点=判断事件，灰线=绑定，
   浅绿带=判断的可作答时间窗，橙线=时间指针。
   三张图共用同一套视觉语汇，差异只有三处：有无连线 / 窗口宽窄 / 节奏是否同源。 */

.rg-list > .rg + .rg { margin-top: 1.35rem; padding-top: 1.35rem; border-top: 1px solid var(--line); }
.rg-head { margin: 0 0 .3rem; font-weight: 650; display: flex; align-items: baseline; gap: .55rem; }
.rg-key {
  flex: none; width: 1.6rem; height: 1.6rem; border-radius: 50%;
  background: var(--accent-soft); color: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .85rem; font-weight: 650;
}
.rg-desc { margin: 0 0 .35rem; color: var(--muted); font-size: .89rem; }
.rg-desc strong { color: var(--ink); font-weight: 650; }
.rg-eg { margin: 0 0 .5rem; color: var(--accent); font-size: .85rem; }

.rg-svg { display: block; width: 100%; height: auto; max-height: 118px; }
.rg-svg text { font-size: 11px; fill: var(--muted); }
.rg-axis { stroke: var(--line); stroke-width: 1; }
.rg-tie  { stroke: #b9b7ae; stroke-width: 2; }
.rg-win  { fill: var(--accent); opacity: .14; }
.rg-cog  { fill: var(--accent); }
.rg-act  { fill: #7f77dd; }
.rg-play { stroke: #d85a30; stroke-width: 2; opacity: 0; }

/* 静态版（折叠回顾）：不播放，事件全部保持可见 */
.rg .rg-ev { opacity: .85; }

/* 动画版 */
.rg-anim .rg-play { opacity: 1; animation: rgSweep 6s linear infinite; }
.rg-anim .rg-ev {
  opacity: .3; transform-box: fill-box; transform-origin: center;
  animation: rgPulse 6s linear infinite;
}
/* A 独有：指针扫过后时间窗迅速收拢，强调“错过就没了” */
.rg-anim .rg-shut {
  transform-box: fill-box; transform-origin: center;
  animation: rgShut 6s linear infinite;
}

@keyframes rgSweep { from { transform: translateX(0); } to { transform: translateX(460px); } }
@keyframes rgPulse {
  0%, 5%   { opacity: 1; transform: scale(1.25); }
  14%,100% { opacity: .3; transform: scale(1); }
}
@keyframes rgShut {
  0%, 4%  { transform: scaleX(1); opacity: .14; }
  13%     { transform: scaleX(.1); opacity: 0; }
  99%     { transform: scaleX(.1); opacity: 0; }
  100%    { transform: scaleX(1); opacity: .14; }
}

@media (prefers-reduced-motion: reduce) {
  .rg-anim .rg-play, .rg-anim .rg-ev, .rg-anim .rg-shut { animation: none; }
  .rg-anim .rg-ev { opacity: .85; }
  .rg-anim .rg-shut { opacity: .14; }
}

/* 每题上方的折叠回顾 */
details.recap {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--card); padding: .6rem .9rem; margin: 0 0 1rem;
}
details.recap > summary {
  cursor: pointer; font-size: .88rem; color: var(--muted);
  list-style: none; user-select: none;
}
details.recap > summary::-webkit-details-marker { display: none; }
details.recap > summary::before { content: "▸ "; }
details.recap[open] > summary::before { content: "▾ "; }
details.recap[open] > summary { margin-bottom: .9rem; }
details.recap .rg-svg { max-height: 96px; }