/* ==========================================================================
   AI味免疫 · 界面风格百科 — 外壳
   校勘版式 reference setting。中缝键栏 + 主栏 + 宽注记边。

/* --- 1. 浠ょ墝 ------------------------------------------------------------ */

:root {
  --paper:      #eae5da;
  --paper-edge: #e0dacb;
  --ink:        #191713;   /* 14.3:1 on paper */
  --ink-60:     #4f4940;   /* 7.1:1  —— 小字下限,正文与术著都用这一档 */
  --ink-38:     #6f695c;   /* 4.3:1  —— 小字在纸底上的下限 */
  --rule:       #b7ac99;
  --hairline:   #ddd6c6;   /* 版口规矩线:不发墨,只标位置 —— 结构线不该抢内容 */
  --rubric:     #a32b1c;   /* 5.7:1 */
  --rubric-dim: #d4b3ac;

  --f-text: 'Sitka Text', 'Noto Serif CJK SC', 'Microsoft YaHei', Georgia, serif;
  --f-app:  'Bahnschrift SemiCondensed', 'Bahnschrift', 'Noto Sans CJK SC',
            'Microsoft YaHei', sans-serif;
  --f-num:  Consolas, 'Cascadia Mono', 'Lucida Console', monospace;

  --rail: 11rem;
  --margin: 22rem;
  --gutter: 4.5rem;
  --edge: 3.2rem;

  --ease: cubic-bezier(.16, 1, .3, 1);

  --slab-ratio: 0.625;   /* 标本 iframe 宽高比,由标本上报的内容高度覆盖 */
}

*, *::before, *::after { box-sizing: border-box; }

html {
  background: var(--paper);
  color: var(--ink);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font: 400 1.0625rem/1.62 var(--f-text);
  font-kerning: normal;
  text-rendering: optimizeLegibility;
  /* 不再叠加装饰性条纹:纸面就是纸面,纹理由规矩线与内容承担 */
}

/* 浏览器自带的部件也属于这套设计:选区、光标、滚动条、焦点环 */
::selection      { background: var(--rubric); color: var(--paper); }
:focus-visible   { outline: 2px solid var(--rubric); outline-offset: 2px; }
html             { caret-color: var(--rubric); scrollbar-color: var(--ink-38) var(--paper); }
::-webkit-scrollbar        { width: 12px; height: 12px; }
::-webkit-scrollbar-track  { background: var(--paper-edge); }
::-webkit-scrollbar-thumb  { background: var(--ink-38); border: 3px solid var(--paper-edge); }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .22em; }
a:hover { text-decoration-style: solid; }

/* 术著:标签、键栏、按钮 —— 一律此声 */
.app {
  font-family: var(--f-app);
  font-size: .8125rem;
  letter-spacing: .075em;
  text-transform: uppercase;
  font-weight: 600;
}

/* --- 2. 鐗堝彛 ------------------------------------------------------------ */

.sheet {
  display: grid;
  grid-template-columns: var(--rail) minmax(0, 1fr) var(--margin);
  column-gap: var(--gutter);
  max-width: 108rem;
  margin: 0 auto;
  padding: 0 var(--edge) 9rem;
}

/* --- 3. 中缝键栏(签名交互) ------------------------------------------- */

.rail {
  grid-column: 1;
  position: sticky;
  top: 0;
  align-self: start;
  max-height: 100vh;
  padding: 2.6rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.rail__plate {
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-60);
  line-height: 1.35;
}

.rail__keys {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.rail__key {
  display: grid;
  grid-template-columns: 1.05rem minmax(0, 1fr);
  align-items: start;
  column-gap: .72rem;
  padding: .5rem 0;
  border: 0;
  background: none;
  font: inherit;
  color: var(--ink-60);
  text-align: left;
  cursor: pointer;
  transition: color .28s var(--ease);
}

.rail__key:hover              { color: var(--ink); }
.rail__key[aria-current="true"] { color: var(--ink); }

/* detent 记号:发丝线 / 当前实心 / 已读划穿 —— 状态是印上去的,不是颜色 */
.detent { display: block; width: .5rem; height: .5rem; margin-top: .3rem; overflow: visible; }
.detent rect, .detent line, .detent path {
  fill: none; stroke: var(--ink-60); stroke-width: 1; vector-effect: non-scaling-stroke;
}
.rail__key[aria-current="true"] .detent rect { fill: var(--rubric); stroke: var(--rubric); }
.rail__key[data-read="true"] .detent rect     { stroke: var(--ink-60); }
.rail__key[data-read="true"] .detent .strike  { stroke: var(--ink-60); stroke-width: 1; }
.rail__key:not([data-read="true"]) .detent .strike { display: none; }
.rail__key[aria-current="true"] .detent .strike { display: none; }

.rail__label { font-size: .75rem; line-height: 1.35; font-weight: 600; letter-spacing: .06em; }
.rail__sub   { display: block; font-size: .6875rem; font-weight: 400; letter-spacing: .04em; color: var(--ink-60); margin-top: .12rem; line-height: 1.3; }

.rail__foot {
  margin-top: auto;
  padding-top: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-60);
}
.rail__foot kbd {
  font-family: var(--f-num);
  font-size: .6875rem;
  border: 1px solid var(--rule);
  padding: 0 .28em;
  color: var(--ink);
}

/* 对照开关:印在纸上的两枚标记 */
.switch {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--ink);
  background: none;
  padding: 0;
  cursor: pointer;
  font: inherit;
}
.switch__opt {
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  font-weight: 600;
  padding: .3rem .6rem;
  color: var(--ink-60);
  transition: background .24s var(--ease), color .24s var(--ease);
}
.switch__opt + .switch__opt { border-left: 1px solid var(--ink); }
.switch[data-mode="slop"]  .switch__opt:first-child,
.switch[data-mode="fixed"] .switch__opt:last-child { background: var(--ink); color: var(--paper); }
.switch[data-mode="slop"]  .switch__opt:first-child { background: var(--ink); }
.switch:hover .switch__opt { color: var(--ink); }
.switch[data-mode="fixed"] .switch__opt:last-child,
.switch[data-mode="slop"]  .switch__opt:first-child { color: var(--paper); }

/* --- 4. 主栏 ------------------------------------------------------------ */

.main { grid-column: 2; min-width: 0; }

.masthead { padding: 4.4rem 0 3.4rem; }

.masthead__title {
  margin: 0;
  font-family: var(--f-text);
  font-weight: 600;
  font-size: clamp(2.1rem, 4.4vw, 3.4rem);
  line-height: 1.06;
  letter-spacing: -.018em;
  text-wrap: balance;
  max-width: 22ch;
}
.masthead__title em { font-style: normal; color: var(--rubric); }

.masthead__lede {
  margin: 1.5rem 0 0;
  max-width: 62ch;
  font-size: 1.0625rem;
  color: var(--ink-60);
}
.masthead__lede strong { color: var(--ink); font-weight: 600; }

.masthead__meta {
  margin-top: 2.1rem;
  padding-top: .7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.6rem;
  font-family: var(--f-num);
  font-size: .6875rem;
  letter-spacing: .02em;
  color: var(--ink-60);
}
.masthead__meta b { font-weight: 400; color: var(--ink-60); }

/* 首屏对照的实际内容:两版控件并置,差异在结构不在颜色 */

.face-off { margin: 0 0 6rem; }

.face-off__head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: .55rem;
}

.face-off__pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  position: relative;
}
.face-off__pair::before {           /* 中缝朱红规矩线,由规矩引擎起笔绘制 */
  content: "";
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: var(--rubric-dim);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .9s var(--ease);
}
.face-off.is-ruled .face-off__pair::before { transform: scaleY(1); }

.face-off__side { padding: 1.5rem 1.6rem; position: relative; }
.face-off__side:first-child { padding-left: 0; }
.face-off__side:last-child  { padding-right: 0; }

.tag {
  position: absolute;
  top: .35rem;
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-60);
}
.face-off__side:first-child .tag { left: 0; }
.face-off__side:last-child  .tag { right: 0; }
.tag--bad  { color: var(--rubric); }

/* 首屏对照的实际内容:两版控件并置,差异在结构不在颜色 */
.fo-slop { display: flex; flex-wrap: wrap; gap: .6rem; padding-top: 1.05rem; }
.fo-btn {
  border: 0;
  border-radius: 999px;
  padding: .62rem 1.25rem;
  font: 600 .9375rem/1 var(--f-app);
  letter-spacing: .01em;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(96deg, #7c5cf0 0%, #2f74c8 100%);
  box-shadow: 0 10px 22px -13px rgba(90, 80, 220, .78);
  transition: transform .24s var(--ease);
}
.fo-btn:hover { transform: translateY(-1px); }
.fo-btn--ghost { color: #4b4266; background: #e9e6f4; box-shadow: inset 0 0 0 1px #dcd7ee; }
.fo-btn--danger { background: linear-gradient(96deg, #cc3d3d 0%, #a85226 100%); }

.fo-fixed { display: flex; flex-wrap: wrap; align-items: flex-end; gap: .5rem; padding-top: .8rem; }
.fo-key {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: .1rem;
  min-width: 4.6rem;
  min-height: 2.9rem;
  padding: .45rem .6rem;
  font-family: var(--f-app);
  color: #17181a;
  cursor: pointer;
  background: #cfcfc8;
  border: 1px solid #8f8f88;
  box-shadow: inset 0 -2px 0 #9a9a93, inset 0 1px 0 rgba(255,255,255,.72);
}
.fo-key span { font-size: .8125rem; font-weight: 600; letter-spacing: .02em; }
.fo-key i {
  font-family: var(--f-num);
  font-style: normal;
  font-size: .6875rem;
  letter-spacing: .12em;
  color: #3f3f39;
}
.fo-key--primary {
  color: #eef2ee;
  background: #2c4f3f;
  border-color: #1c3529;
  box-shadow: inset 0 -2px 0 #163023, inset 0 1px 0 rgba(255,255,255,.16);
}
.fo-key--primary i { color: #b6ccbe; }
.fo-guard { display: flex; flex-direction: column; border-top: 1px solid #7d2a1d; }
.fo-guard::before {
  content: "鎺€寮€鎶ょ洊";
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .1em;
  font-weight: 600;
  color: #f4e6e2;
  background: #b8412f;
  padding: .22rem .6rem;
}
.fo-key--stop {
  color: #f7ece9;
  background: #8f1f14;
  border-color: #5e130c;
  box-shadow: inset 0 -2px 0 #4d0f09, inset 0 1px 0 rgba(255,255,255,.14);
  filter: saturate(.4) brightness(1.1);
}
.fo-key--stop i { color: #e2b7ae; }

/* --- 6. 绱㈠紩(娉ㄨ绱㈠紩,闈炲崱鐗囩敾寤? --------------------------------- */

.index { margin-bottom: 5rem; }

.index__rows { margin: 0; padding: 0; }

.index__row {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 12rem) minmax(0, 1fr) auto;
  align-items: baseline;
  column-gap: 1rem;
  padding: .52rem 0;
  text-decoration: none;
  color: inherit;
}
.index__row:hover .index__name { color: var(--rubric); }

.index__num  { font-family: var(--f-num); font-size: .6875rem; color: var(--ink-60); }
.index__name { font-family: var(--f-text); font-weight: 600; font-size: 1rem; transition: color .24s var(--ease); }
.index__what { font-size: .9375rem; color: var(--ink-60); }
.index__dum  { font-family: var(--f-num); font-size: .6875rem; color: var(--ink-60); }

/* --- 7. 标本档 --------------------------------------------------------- */

.specimen { padding-top: 4.6rem; scroll-margin-top: 1.5rem; }
.specimen + .specimen { margin-top: 1.2rem; }

.specimen__head {
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  column-gap: 1rem;
  align-items: start;
  padding-bottom: .8rem;
}
.specimen__num {
  font-family: var(--f-num);
  font-size: .8125rem;
  color: var(--rubric);
  padding-top: .45rem;
}
.specimen__title {
  margin: 0;
  font-family: var(--f-text);
  font-weight: 600;
  font-size: clamp(1.5rem, 2.4vw, 2rem);
  line-height: 1.14;
  letter-spacing: -.012em;
}
.specimen__origin {
  display: block;
  margin-top: .4rem;
  font-family: var(--f-app);
  font-size: .75rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-60);
}
.specimen__origin i { font-style: normal; color: var(--ink-60); }
.specimen__claim { margin: .85rem 0 0; max-width: 62ch; font-size: 1rem; color: var(--ink-60); }

.specimen__bar {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding-bottom: .7rem;
}
.specimen__open {
  margin-left: auto;
  font-family: var(--f-num);
  font-size: .6875rem;
  color: var(--ink-60);
}

.slab { position: relative; background: #fff; transition: background .4s var(--ease); }
.slab[data-mode="slop"] { background: #f2f0f6; }

.slab iframe {
  display: block;
  width: 100%;
  height: 18rem;          /* 起手高度;落最终高度由 shell.js 完成,避免过渡被抑制时跳变 */
  min-height: 18rem;
  border: 0;
  background: transparent;
}

/* --- 8. 右注记栏 ------------------------------------------------------ */

.margin {
  grid-column: 3;
  padding-top: .2rem;
}
.margin__inner { position: sticky; top: 2.6rem; }

.margin[data-blank="true"] .note { display: none; }
.margin[data-blank="true"] .margin__hint { display: block; }
.margin__hint { display: none; font-size: .9375rem; color: var(--ink-60); max-width: 24ch; }
.note, .margin__hint { animation: note-in .4s var(--ease) both; }
@keyframes note-in {
  from { opacity: 0; transform: translateY(.3rem); }
  to   { opacity: 1; transform: none; }
}

.note { padding: 0 0 1.15rem 1rem; position: relative; }
.note__key {
  display: block;
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-60);
  margin-bottom: .28rem;
}
.note__body { margin: 0; font-size: .875rem; line-height: 1.5; color: var(--ink-60); }
.note__body b { color: var(--ink); font-weight: 600; }
.note--bad .note__key { color: var(--rubric); }
.note__cite { font-family: var(--f-num); font-size: .6875rem; color: var(--ink-60); }

.note__conf {
  display: inline-block;
  font-family: var(--f-app);
  font-size: .6875rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 600;
  border: 1px solid var(--rule);
  padding: .04em .34em;
  color: var(--ink-60);
  margin-left: .3em;
}

/* --- 9. 鏀跺熬 ---------------------------------------------------------- */

.close { padding: 6rem 0 0; max-width: 60ch; }
.close__h { margin: 0 0 .9rem; font-family: var(--f-text); font-weight: 600; font-size: 1.4rem; }
.close__p { margin: 0 0 .9rem; color: var(--ink-60); font-size: 1rem; }
.close__list { margin: 0; padding: 0; list-style: none; font-size: .9375rem; color: var(--ink-60); }
.close__list li { padding: .34rem 0; display: grid; grid-template-columns: 9rem minmax(0,1fr); gap: .8rem; }
.close__list b { font-family: var(--f-app); font-weight: 600; font-size: .6875rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-60); }

/* --- 9b. 规矩图层(由 shell.js 的规矩引擎填充) ----------------------- */

.rule-layer {
  position: absolute;
  top: 0; left: 0;
  z-index: 3;
  pointer-events: none;
  overflow: visible;
}
.rule-layer .rule {
  stroke: var(--hairline);
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
  shape-rendering: crispEdges;
}
.rule-layer .rule--strong { stroke: var(--ink-38); }

/* --- 10. 响应式 ------------------------------------------------------- */

@media (max-width: 1180px) {
  :root { --margin: 0; --gutter: 3rem; }
  .sheet { grid-template-columns: var(--rail) minmax(0, 1fr); }
  /* 必须显式复位:留着 grid-column: 2 会把网格 schema 撑出隐式轨道,栏数收不回来 */
  .main   { grid-column: 2; }
  .margin { grid-column: 2; padding: 1.2rem 0 0; }
  .margin__inner { position: static; display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 1.4rem; }
  .note { padding: 0 0 1.15rem 1rem; border-left: 0; }
}

@media (max-width: 860px) {
  :root { --rail: 0rem; --gutter: 0rem; --edge: 1.25rem; }
  .sheet { grid-template-columns: minmax(0, 1fr); }
  .rail  { grid-column: 1; }
  .main  { grid-column: 1; }
  .margin{ grid-column: 1; }

  .rail {
    grid-column: 1;
    position: static;
    max-height: none;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem 1rem;
    padding: 1.1rem 0 .9rem;
    border-bottom: 1px solid var(--rule);
    margin-bottom: 1.4rem;
  }
  .rail__keys { flex-direction: row; flex-wrap: wrap; gap: .1rem 1rem; }
  .rail__key  { grid-template-columns: .9rem minmax(0,1fr); padding: .1rem 0; }
  .rail__sub  { display: none; }
  .rail__label{ font-size: .6875rem; }
  .rail__foot { margin: 0; padding: 0; flex-direction: row; gap: 1rem; }
  .rail__plate { flex-basis: 100%; }

  .masthead { padding: 1.6rem 0 2.2rem; }
  .face-off__pair { grid-template-columns: minmax(0, 1fr); }
  .face-off__pair::before { display: none; }
  .face-off__side { padding: 1.5rem 0 0; }
  .face-off__side:last-child { padding-top: 2.4rem; }
  .index__row { grid-template-columns: 2.2rem minmax(0,1fr); row-gap: .15rem; }
  .index__what, .index__dum { grid-column: 2; }
  .specimen { padding-top: 3rem; }
  .slab iframe { height: 30rem; }
  .close__list li { grid-template-columns: minmax(0,1fr); gap: .1rem; }
}

/* --- 11. 鍔ㄦ晥闄嶇骇 ----------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
  .face-off__pair::before { transform: scaleY(1); }
}

html[data-static] *,
html[data-static] *::before,
html[data-static] *::after { animation: none !important; transition: none !important; }
html[data-static] .face-off__pair::before { transform: scaleY(1); }
html[data-static] [data-reveal] { opacity: 1 !important; transform: none !important; }

/* 入场:从已经看得见的地方开始,只做位移与透明度,单一缓出 */
[data-reveal] {
  opacity: 0;
  transform: translateY(.6rem);
  transition: opacity .62s var(--ease), transform .62s var(--ease);
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* --- 12. 打印:一份参考版应该能被印出来 ------------------------------- */

@media print {
  @page { margin: 18mm 16mm; }

  html, body { background: #fff !important; }
  body { font-size: 10.5pt; }

  /* 纸面上不需要屏幕上的那些辅助装置 */
  .rule-layer,
  .rail__foot,
  .face-off__pair::before { display: none !important; }

  /* 键栏在纸上没有跟随能力,退回成一张静态目录 */
  .rail { position: static; max-height: none; padding-bottom: .6rem; }
  .sheet { display: block; max-width: none; padding: 0; }

  /* 一档不跨页断:标本是一个整体,断在半路就不好读了 */
  .specimen, .index, .face-off, .index__row { break-inside: avoid; }

  /* 标本在纸上按声明高度缩放,不保留屏幕高度 */
  .slab iframe { height: 16rem !important; border: 1px solid #999; }

  /* 注记退回成紧跟在后的说明块 */
  .margin { position: static; }
  .margin__inner { position: static; display: block; }
  .note { padding-left: .8rem; border-left: 1px solid #bbb; }

  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 8.5pt; color: #444; }
}