/* InkStream 落地页 · 可交互 UI 示意
   这些是「演示用的界面示意」，用 HTML/CSS 重绘 InkStream 的交互，让访客在网页里直接点着体验，
   而非静态截图。示意窗口走浅色（如真实浅色主题），在深墨蓝页面上像一块发亮的屏幕。
   交互全部由 demos.js 切换 data 属性驱动，CSS 负责呈现与过渡；尊重 prefers-reduced-motion。 */

/* ---- 通用「屏幕」窗口 ---- */
.scr {
  --ac: var(--m-standard);
  background: #fbfbfa;
  color: #2b2f36;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 0, 0.12);
  box-shadow: var(--shadow);
  overflow: hidden;
  font-size: 13px;
  line-height: 1.55;
  -webkit-font-smoothing: auto;
}
.scr-bar {
  height: 34px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  background: #f0efec;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  font-size: 12px;
  color: #6b7280;
}
.scr-bar .menus {
  display: flex;
  gap: 14px;
}
.scr-bar .title {
  margin: 0 auto;
  font-weight: 500;
  color: #545a63;
}
.scr-bar .wb {
  display: flex;
  gap: 7px;
}
.scr-bar .wb i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #d4d2cd;
}
.scr-main {
  display: grid;
  grid-template-columns: 150px 1fr 180px;
  height: 348px;
}
.scr-col {
  position: relative;
  overflow: hidden;
}
.scr-left {
  background: #f5f4f1;
  border-right: 1px solid rgba(0, 0, 0, 0.06);
}
.scr-right {
  background: #f7f6f3;
  border-left: 1px solid rgba(0, 0, 0, 0.06);
}
.scr-status {
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 7px;
  padding: 0 14px;
  background: #f0efec;
  border-top: 1px solid rgba(0, 0, 0, 0.07);
  font-size: 11.5px;
  color: #6b7280;
}
.scr-status .sdot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ac);
}

/* ---- 跨模式淡入淡出（同一编辑器变形） ---- */
.swap {
  position: relative;
  height: 100%;
}
.swap > .layer {
  position: absolute;
  inset: 0;
  padding: 16px 18px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  overflow: auto;
}
.scr[data-mode="standard"] .layer[data-m="standard"],
.scr[data-mode="academic"] .layer[data-m="academic"],
.scr[data-mode="creative"] .layer[data-m="creative"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.scr[data-mode="standard"] {
  --ac: var(--m-standard);
}
.scr[data-mode="academic"] {
  --ac: var(--m-academic);
}
.scr[data-mode="creative"] {
  --ac: var(--m-creative);
}

/* 文档区排版 */
.scr-doc .layer {
  color: #2b2f36;
}
.d-h1 {
  font-size: 19px;
  font-weight: 680;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
  color: #1c2026;
}
.d-h2 {
  font-size: 15px;
  font-weight: 660;
  margin: 16px 0 7px;
  color: #2a2f36;
}
.d-p {
  margin: 0 0 10px;
  color: #4a4f57;
}
.d-muted {
  color: #8a8f98;
}
.wl {
  color: var(--m-academic);
  background: rgba(106, 160, 224, 0.12);
  border-radius: 4px;
  padding: 0 3px;
  cursor: help;
}
.cite {
  color: var(--m-academic);
  font-family: var(--mono);
  font-size: 12px;
}
.mathblock {
  margin: 10px 0;
  padding: 12px 14px;
  background: #f3f5f8;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  text-align: center;
  font-family: "Times New Roman", serif;
  font-size: 16px;
  color: #1c2026;
}
.caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background: var(--ac);
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* 左栏：文件树 / 章节树 */
.tree {
  padding: 12px 10px;
  font-size: 12px;
  color: #555b63;
}
.tree .row {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 4px 8px;
  border-radius: 6px;
}
.tree .row.on {
  background: rgba(0, 0, 0, 0.05);
  color: #1c2026;
  font-weight: 560;
}
.tree .row.ind {
  margin-left: 14px;
}
.tree .cdot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex: none;
}
.tree .label-h {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9aa0a8;
  padding: 4px 8px;
  margin-top: 6px;
}

/* 右栏：标签 + 面板 */
.rtabs {
  display: flex;
  gap: 16px;
  padding: 10px 14px 0;
  font-size: 12px;
  color: #8a8f98;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.rtabs .rt.on {
  color: #1c2026;
  font-weight: 600;
  padding-bottom: 8px;
  box-shadow: inset 0 -2px 0 var(--ac);
}
.rpanel {
  padding: 12px 14px;
  font-size: 12px;
  color: #555b63;
}
.rpanel .item {
  padding: 7px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}
.rpanel .item b {
  color: #2a2f36;
  font-weight: 600;
}
.codex {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.codex .card {
  padding: 8px 10px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.07);
  border-radius: 8px;
}
.codex .card .nm {
  font-weight: 620;
  color: #1c2026;
  display: flex;
  align-items: center;
  gap: 6px;
}
.codex .card .nm::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--m-creative);
}
.codex .card .dz {
  color: #8a8f98;
  font-size: 11px;
  margin-top: 2px;
}

/* ---- 模式切换段控件 ---- */
.seg {
  display: inline-flex;
  padding: 4px;
  gap: 4px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  margin: 0 auto 30px;
}
.seg button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-2);
  font-family: inherit;
  font-size: 14px;
  font-weight: 560;
  padding: 9px 20px;
  border-radius: var(--r-pill);
  cursor: pointer;
  transition: color 0.25s, background 0.25s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.seg button .sd {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}
.seg button[data-mode="standard"] .sd {
  background: var(--m-standard);
}
.seg button[data-mode="academic"] .sd {
  background: var(--m-academic);
}
.seg button[data-mode="creative"] .sd {
  background: var(--m-creative);
}
.seg button.on {
  background: var(--bg-card);
  color: var(--text);
  box-shadow: 0 2px 10px -4px rgba(0, 0, 0, 0.5);
}
.demo-center {
  text-align: center;
}
.demo-frame {
  max-width: 860px;
  margin: 0 auto;
}
.demo-hint {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-3);
}

/* ---- 阅读模式示意 ---- */
.reader {
  max-width: 820px;
  margin: 0 auto;
  border-radius: 14px;
  border: 1px solid var(--line-soft);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: background 0.4s, color 0.4s;
}
.reader[data-theme="light"] {
  background: #fdfcf8;
  color: #23262b;
}
.reader[data-theme="sepia"] {
  background: #f3e9d3;
  color: #4a3f2c;
}
.reader[data-theme="dark"] {
  background: #14171d;
  color: #c4cad3;
}
.reader-ctl {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px 18px;
  border-bottom: 1px solid rgba(125, 125, 125, 0.18);
  font-size: 12.5px;
}
.reader-ctl .grp {
  display: inline-flex;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(125, 125, 125, 0.3);
}
.reader-ctl .grp button {
  appearance: none;
  border: 0;
  background: transparent;
  color: inherit;
  opacity: 0.6;
  font-family: inherit;
  font-size: 12.5px;
  padding: 6px 13px;
  cursor: pointer;
  transition: opacity 0.2s, background 0.2s;
}
.reader-ctl .grp button.on {
  opacity: 1;
  background: rgba(125, 125, 125, 0.16);
  font-weight: 600;
}
.reader-ctl .badge {
  margin-left: auto;
  font-size: 11.5px;
  opacity: 0.7;
}
.reader-page {
  padding: 40px clamp(22px, 6vw, 64px);
  transition: all 0.4s;
}
.reader-page h3 {
  letter-spacing: -0.01em;
}
.reader[data-genre="novel"] .reader-page {
  max-width: 38em;
  margin: 0 auto;
  font-family: "Georgia", "Songti SC", "SimSun", serif;
  font-size: 17px;
  line-height: 2;
}
.reader[data-genre="novel"] .reader-page h3 {
  text-align: center;
  font-weight: 600;
  margin: 0 0 28px;
  font-size: 20px;
}
.reader[data-genre="novel"] .reader-page p {
  margin: 0;
  text-indent: 2em;
}
.reader[data-genre="paper"] .reader-page {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.8;
}
.reader[data-genre="paper"] .reader-page h3 {
  font-size: 18px;
  font-weight: 680;
  margin: 0 0 6px;
}
.reader[data-genre="paper"] .reader-page .sub {
  opacity: 0.6;
  font-size: 13px;
  margin: 0 0 20px;
}
.reader[data-genre="paper"] .reader-page p {
  margin: 0 0 14px;
}
.reader-page .novel-only {
  display: none;
}
.reader-page .paper-only {
  display: none;
}
.reader[data-genre="novel"] .novel-only {
  display: block;
}
.reader[data-genre="paper"] .paper-only {
  display: block;
}

/* ---- 实时预览 / 双向链接 切换 ---- */
.lp {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: #fbfbfa;
  color: #2b2f36;
  box-shadow: var(--shadow-soft);
}
.lp-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #f0efec;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  font-size: 12px;
  color: #6b7280;
}
.lp-toggle {
  margin-left: auto;
  display: inline-flex;
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 7px;
  overflow: hidden;
}
.lp-toggle button {
  appearance: none;
  border: 0;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  color: #6b7280;
  padding: 5px 12px;
  cursor: pointer;
}
.lp-toggle button.on {
  background: #fff;
  color: #1c2026;
  font-weight: 600;
}
.lp-body {
  padding: 22px 24px;
  min-height: 188px;
  font-size: 14.5px;
  line-height: 1.7;
}
.lp[data-view="source"] .lp-rendered,
.lp[data-view="preview"] .lp-source {
  display: none;
}
.lp-source {
  font-family: var(--mono);
  font-size: 13px;
  color: #4a4f57;
  white-space: pre-wrap;
}
.lp-source .tok {
  color: #b0641e;
}
.lp-source .tok-link {
  color: #2f7d6b;
}
.lp-rendered h4 {
  font-size: 19px;
  margin: 0 0 10px;
  color: #1c2026;
}
.lp-rendered p {
  margin: 0 0 10px;
  color: #3a3f47;
}
.lp-rendered b {
  font-weight: 680;
}
.lp-rendered .lk {
  color: #2f7d6b;
  border-bottom: 1px solid rgba(47, 125, 107, 0.4);
  cursor: help;
  position: relative;
}
.lp-rendered .lk:hover .pop,
.lp-rendered .lk:focus .pop {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -6px);
}
.pop {
  position: absolute;
  left: 50%;
  bottom: 100%;
  transform: translate(-50%, 2px);
  width: 210px;
  background: #fff;
  color: #2b2f36;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 10px;
  box-shadow: 0 16px 40px -12px rgba(0, 0, 0, 0.4);
  padding: 12px 13px;
  font-size: 12px;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 3;
  text-align: left;
  font-family: var(--font);
}
.pop .pop-t {
  font-weight: 660;
  color: #1c2026;
  margin-bottom: 4px;
}

/* ---- prose 句级 diff ---- */
.diff {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: #fbfbfa;
  color: #2b2f36;
  box-shadow: var(--shadow-soft);
}
.diff-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: #f0efec;
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  font-size: 12px;
  color: #6b7280;
}
.diff-toggle {
  margin-left: auto;
  appearance: none;
  border: 1px solid rgba(0, 0, 0, 0.14);
  background: #fff;
  color: #1c2026;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 7px;
  cursor: pointer;
}
.diff-body {
  padding: 22px 24px;
  font-size: 14.5px;
  line-height: 1.85;
}
.diff .s-del {
  background: rgba(214, 84, 84, 0.16);
  color: #9a2f2f;
  text-decoration: line-through;
  text-decoration-color: rgba(154, 47, 47, 0.5);
  border-radius: 3px;
  padding: 0 2px;
  transition: background 0.3s;
}
.diff .s-add {
  background: rgba(64, 150, 96, 0.16);
  color: #1f6b3a;
  border-radius: 3px;
  padding: 0 2px;
  transition: background 0.3s;
}
.diff[data-on="false"] .s-del {
  display: none;
}
.diff[data-on="false"] .s-add {
  background: transparent;
  color: inherit;
}

@media (max-width: 760px) {
  .scr-main {
    grid-template-columns: 1fr;
    height: auto;
  }
  .scr-left,
  .scr-right {
    display: none;
  }
  .scr-doc {
    height: 300px;
  }
  .seg {
    flex-wrap: wrap;
    border-radius: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .swap > .layer,
  .reader,
  .reader-page,
  .pop,
  .caret {
    transition: none;
    animation: none;
  }
}