/* ASTRALYN DS-OBS · experience.css —— 文章阅读体验层（档案调阅）：.article-* 全部、阅读进度、17 种版式变体、评论区、TOC、.reveal 显形系统、.music-easter、.emoji-*、.comment-honeypot、.noscript-note。设计令牌由 styles.css 提供，此处只消费 var()。 */

/* ============================================================
   0. 域内共享变量
   --acc      = 分类强调色（JS 注入 --post-accent），色块 / 线条用
   --acc-text = 强调色的“可读文字”形态：暗色下原色，浅色下掺墨压深
   ============================================================ */
.article-dialog article {
  --acc: var(--post-accent, var(--signal));
  --acc-text: var(--acc);
}

html[data-theme="light"] .article-dialog article {
  --acc-text: color-mix(in srgb, var(--acc) 44%, var(--ink));
}

/* ============================================================
   1. 阅读进度 · 信号采集条
   article-reader.js 写入 --article-progress 与 <b> 百分比读出
   ============================================================ */
.article-reading-progress {
  position: sticky;
  z-index: 12;
  top: 0;
  height: 3px;
  background:
    repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 10%),
    color-mix(in srgb, var(--panel) 72%, transparent);
}

.article-reading-progress span {
  display: block;
  width: var(--article-progress, 0%);
  height: 100%;
  background: var(--acc, var(--signal));
  box-shadow: 0 0 14px color-mix(in srgb, var(--acc, var(--signal)) 55%, transparent);
  transition: width 120ms linear;
}

.article-reading-progress b {
  position: absolute;
  top: 10px;
  right: 16px;
  padding: 3px 7px;
  color: var(--ink-dim);
  background: color-mix(in srgb, var(--bg) 74%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .18em;
}

/* ============================================================
   2. 档案封面板 · article-hero
   ============================================================ */
.article-hero {
  display: block;
  width: 100%;
  height: 44vh;
  min-height: 300px;
  max-height: 560px;
  object-fit: cover;
  filter: saturate(.78) contrast(1.07) brightness(.92);
  border-bottom: 1px solid var(--line);
}

html[data-theme="light"] .article-hero { filter: saturate(.82) contrast(1.02); }

/* ============================================================
   3. 调阅台三栏 · reader layout
   左：竖排档案编号 / 中：正文 / 右：目录侧轨
   ============================================================ */
.article-reader-layout {
  display: grid;
  grid-template-columns: 148px minmax(0, 720px) 200px;
  justify-content: space-between;
  gap: clamp(28px, 4vw, 56px);
  width: min(1200px, calc(100% - 56px));
  margin: 0 auto;
  padding: 0 0 140px;
}

.article-body { min-width: 0; width: 100%; max-width: 720px; margin: 0 auto; padding: 72px 0 0; }

/* —— 左轨：竖排档案编号（观测票据边条） —— */
.article-archive-mark {
  position: sticky;
  top: 96px;
  display: grid;
  justify-items: start;
  gap: 14px;
  align-self: start;
  margin-top: 72px;
  padding: 18px 0 20px;
  border-top: 1px solid var(--acc, var(--signal));
  border-bottom: 1px dashed var(--line-strong);
}

.article-archive-mark small {
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .26em;
  text-transform: uppercase;
}

.article-archive-mark b {
  min-height: 132px;
  color: var(--ink);
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .34em;
  writing-mode: vertical-rl;
  overflow-wrap: anywhere;
  text-transform: uppercase;
}

.article-archive-mark span { color: var(--ink-dim); font-size: 11px; letter-spacing: .08em; }

/* —— 右轨：目录 = 侧轨刻度尺 —— */
.article-toc {
  position: sticky;
  top: 96px;
  align-self: start;
  margin-top: 72px;
  padding-left: 20px;
  border-left: 1px solid var(--line-strong);
}

.article-toc[hidden] { display: none; }

.article-toc::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -1px;
  width: 7px;
  background: repeating-linear-gradient(180deg, var(--line-strong) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.article-toc small {
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .26em;
  text-transform: uppercase;
}

.article-toc h2 { margin: 10px 0 16px; font: 600 19px/1.4 var(--font-serif); }

.article-toc-list { display: grid; }

.article-toc-list button {
  position: relative;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 9px;
  padding: 10px 0;
  color: var(--ink-dim);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  text-align: left;
  cursor: pointer;
  font-size: 11px;
  line-height: 1.55;
  transition: color .3s var(--ease-out);
}

.article-toc-list button::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -20px;
  width: 10px;
  height: 1px;
  background: var(--acc, var(--signal));
  transform: scaleX(.4);
  transform-origin: left;
  transition: transform .3s var(--ease-out);
}

.article-toc-list button:hover { color: var(--ink); }
.article-toc-list button:hover::before { transform: scaleX(1); }

.article-toc-list button span {
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1.7 var(--font-mono);
  letter-spacing: .1em;
}

.article-toc-list button[data-level="h3"] { padding-left: 14px; }
.article-toc-list button[data-level="h3"]::before { width: 6px; }

/* ============================================================
   4. 文章头部 · article-intro
   ============================================================ */
.article-intro { margin: 0 0 46px; }

.article-intro .post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  margin: 0 0 20px;
  color: var(--ink-dim);
  font: 500 var(--fs-micro)/1.6 var(--font-mono);
  letter-spacing: .18em;
  text-transform: uppercase;
}

.article-intro .post-meta > * { position: relative; }

.article-intro .post-meta > * + *::before {
  content: "/";
  position: absolute;
  left: -13px;
  color: var(--ink-faint);
}

.article-intro .post-meta > span:first-child { color: var(--acc-text, var(--signal-text)); }

.article-tags { display: flex; flex-wrap: wrap; gap: 7px; margin: 0 0 24px; }

.article-tags span {
  padding: 4px 9px;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: 500 var(--fs-micro)/1.4 var(--font-mono);
  letter-spacing: .14em;
}

.article-intro h1 {
  margin: 0 0 26px;
  font: 600 clamp(30px, 4.6vw, 46px)/1.32 var(--font-title);
  overflow-wrap: anywhere;
}

.article-intro h1 em {
  color: var(--acc-text, var(--signal-text));
  font-style: normal;
}

.article-intro .lead {
  margin: 0;
  color: var(--ink-dim);
  font: 400 17px/1.95 var(--font-serif);
}

/* ============================================================
   5. 版式铭牌 · article-format-banner（仪器铭牌）
   ============================================================ */
.article-format-banner {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  margin: 0 0 42px;
  padding: 14px 16px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--acc, var(--signal)) 6%, var(--panel)), var(--panel-2));
  border: 1px solid var(--line-strong);
  border-top-color: var(--acc, var(--signal));
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.article-body > .article-format-banner { margin-bottom: 46px; }

.article-format-banner > span {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  color: var(--acc-text, var(--signal-text));
  border: 1px solid color-mix(in srgb, var(--acc, var(--signal)) 46%, transparent);
  font: 500 13px/1 var(--font-mono);
}

.article-format-banner > div { min-width: 0; }

.article-format-banner small {
  display: block;
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1.4 var(--font-mono);
  letter-spacing: .24em;
  text-transform: uppercase;
}

.article-format-banner b {
  display: block;
  margin-top: 3px;
  overflow: hidden;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-format-banner dl {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.article-format-banner dl > div { min-width: 0; padding: 9px 11px; background: var(--panel); }

.article-format-banner dt {
  color: var(--ink-faint);
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.article-format-banner dd {
  margin: 3px 0 0;
  overflow: hidden;
  color: var(--ink);
  font-size: var(--fs-micro);
  letter-spacing: .04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-format-banner a {
  color: var(--acc-text, var(--signal-text));
  border-bottom: 1px solid color-mix(in srgb, var(--acc, var(--signal)) 55%, transparent);
  transition: border-color .3s var(--ease-out);
}

.article-format-banner a:hover { border-bottom-color: var(--acc-text, var(--signal-text)); }

/* ============================================================
   6. 正文富文本 · article-copy（全元素覆盖）
   ============================================================ */
.article-copy {
  color: color-mix(in srgb, var(--ink) 90%, transparent);
  font-size: 15.5px;
  line-height: 2.05;
  counter-reset: obs-fig;
}

.article-copy p { margin: 0 0 26px; }
.article-copy > :last-child { margin-bottom: 0; }
.article-copy strong, .article-copy b { color: var(--ink); font-weight: 600; }
.article-copy em, .article-copy i { font-family: var(--font-serif), serif; }
.article-copy small { color: var(--ink-dim); }

.article-copy mark {
  padding: 1px 5px;
  color: var(--ink);
  background: var(--signal-soft);
  border-radius: var(--radius);
}

.article-copy kbd {
  padding: 2px 7px;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font: 500 .82em/1.5 var(--font-mono);
}

.article-copy a {
  color: var(--ice);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--ice) 40%, transparent);
  text-underline-offset: 4px;
  transition: color .3s var(--ease-out), text-decoration-color .3s var(--ease-out);
}

.article-copy a:hover { color: var(--signal-text); text-decoration-color: currentColor; }

.article-copy h2 {
  position: relative;
  margin: 68px 0 24px;
  padding-bottom: 14px;
  color: var(--ink);
  font: 600 clamp(21px, 2.6vw, 26px)/1.5 var(--font-title);
  border-bottom: 1px solid var(--line);
}

.article-copy h2::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 36px;
  height: 1px;
  background: var(--acc, var(--signal));
}

.article-copy h3 {
  position: relative;
  margin: 46px 0 16px;
  padding-left: 16px;
  color: var(--ink);
  font: 600 clamp(17px, 2vw, 19px)/1.6 var(--font-serif);
}

.article-copy h3::before {
  content: "";
  position: absolute;
  top: .58em;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--acc, var(--signal));
  transform: rotate(45deg);
}

.article-copy blockquote {
  margin: 46px 0;
  padding: 8px 0 8px 26px;
  color: var(--ink);
  border-left: 1px solid var(--acc, var(--signal));
  font: 400 19px/1.95 var(--font-serif);
}

.article-copy blockquote p { margin: 0 0 14px; font: inherit; color: inherit; }
.article-copy blockquote p:last-child { margin-bottom: 0; }
.article-copy blockquote cite { color: var(--ink-dim); font: 500 var(--fs-micro)/1.6 var(--font-mono); letter-spacing: .16em; }

.article-copy ul,
.article-copy ol {
  display: grid;
  gap: 10px;
  margin: 26px 0 34px;
  padding-left: 24px;
  color: color-mix(in srgb, var(--ink) 84%, transparent);
}

.article-copy li::marker { color: var(--acc-text, var(--signal-text)); font: 500 .86em var(--font-mono); }
.article-copy li > ul, .article-copy li > ol { margin: 10px 0 0; }

.article-copy pre {
  margin: 38px 0;
  padding: 20px 22px;
  overflow-x: auto;
  color: var(--ink);
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 0;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  font: 400 12.5px/1.9 var(--font-mono);
}

.article-copy pre code { padding: 0; color: inherit; background: none; border: 0; font: inherit; }

.article-copy :not(pre) > code {
  padding: 2px 6px;
  color: var(--acc-text, var(--signal-text));
  background: color-mix(in srgb, var(--acc, var(--signal)) 10%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: 500 .84em/1.6 var(--font-mono);
}

.article-copy details {
  margin: 30px 0;
  padding: 0 20px;
  background: color-mix(in srgb, var(--panel) 80%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .3s var(--ease-out);
}

.article-copy details[open] { border-color: var(--line-strong); }

.article-copy summary {
  position: relative;
  margin: 0 -20px;
  padding: 15px 44px 15px 20px;
  color: var(--ink);
  list-style: none;
  cursor: pointer;
  font-weight: 500;
  transition: color .3s var(--ease-out);
}

.article-copy summary::-webkit-details-marker { display: none; }

.article-copy summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 18px;
  color: var(--acc-text, var(--signal-text));
  font: 400 15px/1 var(--font-mono);
  transform: translateY(-50%);
  transition: transform .3s var(--ease-out);
}

.article-copy details[open] > summary { border-bottom: 1px dashed var(--line-strong); }
.article-copy details[open] > summary::after { content: "–"; }
.article-copy summary:hover { color: var(--signal-text); }
.article-copy details > :not(summary) { margin-top: 16px; }
.article-copy details > :last-child { margin-bottom: 16px; }

.article-copy figure { margin: 46px 0; counter-increment: obs-fig; }

.article-copy figure img,
.article-copy > img,
.article-copy p > img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 680px;
  object-fit: contain;
  background: var(--panel);
  border: 1px solid var(--line);
}

.article-copy > img, .article-copy p > img { margin: 38px 0; }

.article-copy figcaption {
  margin-top: 12px;
  color: var(--ink-faint);
  font-size: 11px;
  line-height: 1.8;
  letter-spacing: .04em;
}

.article-copy figcaption::before {
  content: "FIG." counter(obs-fig, decimal-leading-zero) " — ";
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .18em;
}

.article-copy hr {
  position: relative;
  height: 1px;
  margin: 64px auto;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  border: 0;
  overflow: visible;
}

.article-copy hr::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 6px;
  height: 6px;
  background: var(--bg);
  border: 1px solid var(--acc, var(--signal));
  transform: translate(-50%, -50%) rotate(45deg);
}

.article-copy table {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 36px 0;
  overflow-x: auto;
  border-collapse: collapse;
  color: var(--ink-dim);
  font-size: 12.5px;
  line-height: 1.75;
}

.article-copy th,
.article-copy td { padding: 11px 13px; border: 1px solid var(--line); text-align: left; vertical-align: top; }

.article-copy th {
  color: var(--ink);
  background: var(--panel-2);
  font: 500 var(--fs-micro)/1.6 var(--font-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  white-space: nowrap;
}

/* 附件 · article-downloads（正文内下载卡） */
.article-downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 32px 0 42px; }

.article-downloads a {
  min-height: 96px;
  display: grid;
  align-content: center;
  gap: 6px;
  padding: 17px 18px;
  color: var(--ink);
  background: color-mix(in srgb, var(--acc, var(--signal)) 5%, var(--panel));
  border: 1px solid var(--line);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  text-decoration: none;
  transition: border-color .3s var(--ease-out), background .3s var(--ease-out);
}

.article-downloads a:hover { border-color: color-mix(in srgb, var(--acc, var(--signal)) 60%, var(--line-strong)); }
.article-downloads small { color: var(--acc-text, var(--signal-text)); font: 500 var(--fs-micro)/1.5 var(--font-mono); letter-spacing: .2em; text-transform: uppercase; }
.article-downloads strong { font-size: 13px; font-weight: 600; }
.article-downloads span { color: var(--ink-dim); font-size: var(--fs-micro); line-height: 1.7; }

/* ============================================================
   7. 版式变体 · [data-post-format]
   基线 = standard 与一切未知值；六个主档 + 分组共享治理
   ============================================================ */

/* —— TECHNICAL 档：技术档案 / 实验记录（等宽刻度） —— */
[data-post-format="technical"] .article-body,
[data-post-format="lab-notebook"] .article-body { max-width: 760px; }

[data-post-format="technical"] .article-intro h1,
[data-post-format="lab-notebook"] .article-intro h1 {
  font-family: var(--font-display), var(--font-sans), sans-serif;
  font-weight: 600;
  letter-spacing: .01em;
}

[data-post-format="technical"] .article-intro .lead,
[data-post-format="lab-notebook"] .article-intro .lead { font-family: var(--font-sans), sans-serif; font-size: 16px; }

[data-post-format="technical"] .article-copy,
[data-post-format="lab-notebook"] .article-copy { counter-reset: obs-fig technical-section; font-size: 15px; }

[data-post-format="technical"] .article-copy h2,
[data-post-format="lab-notebook"] .article-copy h2 {
  counter-increment: technical-section;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-sans), sans-serif;
  font-size: 22px;
}

[data-post-format="technical"] .article-copy h2::before,
[data-post-format="lab-notebook"] .article-copy h2::before {
  content: counter(technical-section, decimal-leading-zero);
  position: static;
  width: auto;
  height: auto;
  color: var(--acc-text, var(--signal-text));
  background: none;
  font: 500 11px/1 var(--font-mono);
  letter-spacing: .12em;
}

[data-post-format="technical"] .article-copy pre,
[data-post-format="lab-notebook"] .article-copy pre { border-left: 2px solid var(--acc, var(--signal)); }

[data-post-format="lab-notebook"] .article-copy figure { padding: 12px; border: 1px dashed var(--line-strong); }
[data-post-format="lab-notebook"] .article-copy figure img { border: 0; }

/* —— PROJECT 档：项目 / 复盘 / 时间线（节点轨道） —— */
[data-post-format="project"] .article-archive-mark,
[data-post-format="case-study"] .article-archive-mark,
[data-post-format="timeline"] .article-archive-mark {
  padding: 18px 16px 20px;
  background: color-mix(in srgb, var(--acc, var(--signal)) 6%, var(--panel));
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

[data-post-format="project"] .article-copy,
[data-post-format="case-study"] .article-copy,
[data-post-format="timeline"] .article-copy {
  position: relative;
  padding-left: 30px;
  border-left: 1px solid color-mix(in srgb, var(--acc, var(--signal)) 34%, var(--line));
}

[data-post-format="project"] .article-copy h2,
[data-post-format="case-study"] .article-copy h2,
[data-post-format="timeline"] .article-copy h2 { border-bottom: 0; padding-bottom: 0; }

[data-post-format="project"] .article-copy h2::before,
[data-post-format="case-study"] .article-copy h2::before,
[data-post-format="timeline"] .article-copy h2::before {
  bottom: auto;
  top: .52em;
  left: -34px;
  width: 8px;
  height: 8px;
  background: var(--acc, var(--signal));
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--acc, var(--signal)) 14%, transparent);
  transform: rotate(45deg);
}

[data-post-format="project"] .article-copy h2::after,
[data-post-format="case-study"] .article-copy h2::after,
[data-post-format="timeline"] .article-copy h2::after {
  content: "";
  position: absolute;
  top: .78em;
  left: -22px;
  width: 18px;
  height: 1px;
  background: var(--line-strong);
}

/* —— ESSAY 档：随笔 / 长文（衬线散文） —— */
[data-post-format="essay"] .article-intro .lead,
[data-post-format="longform"] .article-intro .lead { font-size: 19px; line-height: 2.05; }

[data-post-format="essay"] .article-copy,
[data-post-format="longform"] .article-copy { font-size: 16px; line-height: 2.2; }

[data-post-format="essay"] .article-copy > p,
[data-post-format="longform"] .article-copy > p { font-family: var(--font-serif), serif; }

[data-post-format="essay"] .article-copy > p + p,
[data-post-format="longform"] .article-copy > p + p { text-indent: 2em; }

[data-post-format="essay"] .article-copy blockquote,
[data-post-format="longform"] .article-copy blockquote {
  margin-right: -34px;
  margin-left: -34px;
  padding: 26px 34px;
  background: color-mix(in srgb, var(--acc, var(--signal)) 6%, transparent);
  border-left-width: 1px;
  font-size: 20px;
}

/* —— DIARY 档：日记 / 短记（手稿边轨） —— */
[data-post-format="diary"] .article-hero,
[data-post-format="note"] .article-hero { height: min(30vh, 250px); filter: saturate(.68) brightness(.82); }

[data-post-format="diary"] .article-intro,
[data-post-format="note"] .article-intro { padding-bottom: 26px; border-bottom: 1px dashed var(--line-strong); }

[data-post-format="diary"] .article-intro h1,
[data-post-format="note"] .article-intro h1 { font-size: clamp(27px, 3.8vw, 38px); }

[data-post-format="diary"] .article-copy,
[data-post-format="note"] .article-copy {
  position: relative;
  padding-left: 32px;
  border-left: 1px solid color-mix(in srgb, var(--acc, var(--signal)) 46%, transparent);
  font-family: var(--font-serif), serif;
}

[data-post-format="diary"] .article-copy h2,
[data-post-format="note"] .article-copy h2 {
  display: inline-block;
  margin: 60px 0 20px -32px;
  padding: 7px 14px 7px 32px;
  color: var(--acc-text, var(--signal-text));
  background: color-mix(in srgb, var(--acc, var(--signal)) 8%, var(--panel));
  border-bottom: 0;
  font: 500 13px/1.6 var(--font-mono);
  letter-spacing: .12em;
}

[data-post-format="diary"] .article-copy h2::before,
[data-post-format="note"] .article-copy h2::before {
  bottom: auto;
  top: 50%;
  left: 12px;
  width: 8px;
  height: 1px;
  transform: translateY(-50%);
}

/* —— READING 档：阅读 / 引语 / 评论（摘录卡） —— */
[data-post-format="reading"] .article-hero,
[data-post-format="quote"] .article-hero,
[data-post-format="review"] .article-hero { height: min(32vh, 280px); opacity: .82; filter: grayscale(.3) contrast(1.05); }

[data-post-format="reading"] .article-body,
[data-post-format="quote"] .article-body,
[data-post-format="review"] .article-body { max-width: 620px; }

[data-post-format="reading"] .article-copy blockquote,
[data-post-format="quote"] .article-copy blockquote,
[data-post-format="review"] .article-copy blockquote {
  position: relative;
  margin: 46px -28px;
  padding: 34px 30px 28px;
  background: color-mix(in srgb, var(--acc, var(--signal)) 7%, var(--panel));
  border-top: 1px solid var(--acc, var(--signal));
  border-left: 0;
  font-size: 21px;
  line-height: 1.9;
}

[data-post-format="reading"] .article-copy blockquote::before,
[data-post-format="quote"] .article-copy blockquote::before,
[data-post-format="review"] .article-copy blockquote::before {
  content: "「";
  position: absolute;
  top: -18px;
  left: 26px;
  color: var(--acc-text, var(--signal-text));
  background: transparent;
  font: 600 30px/1 var(--font-serif);
}

/* —— TRAVEL 档：旅行 / 叙事 / 画廊（旅图幅面） —— */
[data-post-format="travel"] .article-hero,
[data-post-format="travelogue"] .article-hero,
[data-post-format="gallery"] .article-hero { height: 56vh; max-height: 620px; filter: saturate(.9) contrast(1.05); }

[data-post-format="travel"] .article-format-banner,
[data-post-format="travelogue"] .article-format-banner,
[data-post-format="gallery"] .article-format-banner {
  background-image: linear-gradient(90deg, transparent 0 7px, color-mix(in srgb, var(--acc, var(--signal)) 34%, transparent) 7px 8px, transparent 8px 16px);
  background-position: left bottom;
  background-repeat: repeat-x;
  background-size: 16px 1px;
}

[data-post-format="travel"] .article-copy > p:first-of-type::first-letter,
[data-post-format="travelogue"] .article-copy > p:first-of-type::first-letter {
  float: left;
  margin: 8px 12px 0 0;
  color: var(--acc-text, var(--signal-text));
  font: 600 54px/0.82 var(--font-serif);
}

[data-post-format="travel"] .article-copy figure,
[data-post-format="travelogue"] .article-copy figure,
[data-post-format="gallery"] .article-copy figure { margin: 52px -28px; }

[data-post-format="travel"] .article-copy figcaption,
[data-post-format="travelogue"] .article-copy figcaption,
[data-post-format="gallery"] .article-copy figcaption { padding: 0 28px; }

[data-post-format="gallery"] .article-copy figure img { max-height: 780px; }

/* —— MINIMAL 档：极简阅读（静默基线） —— */
[data-post-format="minimal"] .article-hero { height: min(26vh, 220px); opacity: .6; filter: grayscale(.5); }
[data-post-format="minimal"] .article-body { max-width: 580px; }
[data-post-format="minimal"] .article-copy { font-size: 16px; line-height: 2.15; }

[data-post-format="minimal"] .article-format-banner {
  background: transparent;
  border-color: var(--line);
  border-top-color: var(--line-strong);
}

[data-post-format="minimal"] .article-copy h2 { border-bottom: 0; padding-bottom: 0; }
[data-post-format="minimal"] .article-copy h2::before { display: none; }

/* ============================================================
   8. 上一篇 / 下一篇 · article-sequence
   ============================================================ */
.article-sequence {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 64px;
  margin-bottom: 24px;
}

.article-sequence a,
.article-sequence button,
.article-sequence > span {
  min-height: 96px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 20px;
  color: var(--ink, #fff);
  background: color-mix(in srgb, var(--panel, #0e131d) 85%, transparent);
  border: 1px solid var(--line, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius, 4px);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  text-align: left;
  text-decoration: none;
  font: inherit;
  box-sizing: border-box;
}

.article-sequence a,
.article-sequence button {
  position: relative;
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}

.article-sequence a::before,
.article-sequence button::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--acc, var(--signal, #d6ff73));
  transform: scaleX(0.35);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out), width 0.3s var(--ease-out);
}

.article-sequence a:hover,
.article-sequence button:hover {
  border-color: var(--signal, #d6ff73);
  background: color-mix(in srgb, var(--panel, #121824) 95%, transparent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4), 0 0 12px color-mix(in srgb, var(--signal, #d6ff73) 15%, transparent);
}

.article-sequence a:hover::before,
.article-sequence button:hover::before {
  transform: scaleX(1);
  width: 100%;
}

.article-sequence > span {
  opacity: 0.45;
  border-style: dashed;
  cursor: default;
}

.article-sequence small {
  color: var(--ink-faint, #8b949e);
  font: 600 var(--fs-micro)/1.2 var(--font-mono, monospace);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-sequence b {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink, #fff);
}

/* ============================================================
   9. 相关手记 · article-related
   ============================================================ */
.article-related { margin-top: 68px; padding-top: 26px; border-top: 1px solid var(--line-strong); }
.article-related[hidden] { display: none; }

.article-related-head span {
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .26em;
  text-transform: uppercase;
}

.article-related-head h2 { margin: 6px 0 18px; font: 600 22px/1.5 var(--font-serif); }

.article-related > div:last-child { display: grid; }

.article-related button {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 15px 4px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px dashed var(--line-strong);
  border-radius: 0;
  text-align: left;
  cursor: pointer;
  font: inherit;
  transition: background .3s var(--ease-out);
}

.article-related button:hover { background: color-mix(in srgb, var(--acc, var(--signal)) 5%, transparent); }
.article-related button small { color: var(--ink-faint); font: 500 var(--fs-micro)/1.6 var(--font-mono); letter-spacing: .1em; }
.article-related button b { font-size: 12.5px; font-weight: 500; line-height: 1.6; }

.article-related button span {
  color: var(--acc-text, var(--signal-text));
  transition: transform .3s var(--ease-out);
}

.article-related button:hover span { transform: translateX(4px); }

/* ============================================================
   10. 评论区 · article-comments（回声接收舱）
   ============================================================ */
.article-comments { margin-top: 84px; padding-top: 28px; border-top: 1px solid var(--line-strong); }

.article-comments > header { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }

.article-comments > header small {
  color: var(--acc-text, var(--signal-text));
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .26em;
  text-transform: uppercase;
}

.article-comments > header h2 { margin: 6px 0 0; font: 600 24px/1.4 var(--font-serif); }

.article-comments > header > strong {
  color: var(--acc-text, var(--signal-text));
  font: 500 38px/1 var(--font-mono);
  letter-spacing: .04em;
}

.article-comment-list { display: grid; }

.article-comment-list > article { padding: 16px 0 14px; border-bottom: 1px dashed var(--line-strong); }

.article-comment-head { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.article-comment-head strong { font-size: 12.5px; font-weight: 600; letter-spacing: .02em; }

.article-comment-list time,
.article-comment-list .article-comment-meta small { color: var(--ink-faint); font: 500 var(--fs-micro)/1.7 var(--font-mono); letter-spacing: .1em; }

.article-comment-list p { margin: 7px 0 5px; color: color-mix(in srgb, var(--ink) 88%, transparent); font-size: 13.5px; line-height: 1.9; white-space: pre-wrap; overflow-wrap: anywhere; }

.article-comment-meta { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.article-comment-meta button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 28px;
  padding: 0 4px;
  color: var(--ink-dim);
  background: transparent;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .1em;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}

.article-comment-meta button:hover { color: var(--ice); border-bottom-color: var(--line-strong); }

.article-comments-empty {
  padding: 22px 0;
  color: var(--ink-faint) !important;
  font-family: var(--font-serif), serif;
  font-style: italic;
}

/* 回复链 · 冰蓝支轨 */
.article-comment-replies {
  display: grid;
  margin: 12px 0 4px 14px;
  padding-left: 16px;
  border-left: 1px solid color-mix(in srgb, var(--ice) 42%, var(--line));
}

.article-comment-reply { padding: 12px 0; border-top: 1px dashed var(--line); }
.article-comment-reply:first-child { border-top: 0; }

.article-comment-reply-target {
  display: block;
  margin-top: 4px;
  color: var(--ice) !important;
  font: 500 var(--fs-micro)/1.6 var(--font-mono) !important;
  letter-spacing: .08em;
}

/* 行内回复表单 */
.article-comment-reply-form {
  display: grid;
  gap: 12px;
  margin: 14px 0 4px;
  padding: 16px;
  background: color-mix(in srgb, var(--panel-2) 82%, transparent);
  border: 1px solid var(--line);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
}

.article-comment-reply-form-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.article-comment-reply-form-head strong { color: var(--ice); font-size: 11px; font-weight: 500; letter-spacing: .06em; }

.article-comment-reply-form-head button {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--ink-dim);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  cursor: pointer;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}

.article-comment-reply-form-head button:hover { color: var(--alert); border-color: var(--line-strong); }

.article-comment-reply-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; }

.article-comment-reply-form label {
  display: grid;
  gap: 7px;
  margin: 0;
  color: var(--ink-faint);
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .18em;
}

.article-comment-reply-form input,
.article-comment-reply-form textarea {
  width: 100%;
  min-height: 36px;
  padding: 8px 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  outline: 0;
  resize: vertical;
  font: 400 13px/1.7 var(--font-sans), sans-serif;
  transition: border-color .3s var(--ease-out);
}

.article-comment-reply-form input:focus,
.article-comment-reply-form textarea:focus { border-bottom-color: var(--ice); }

.article-comment-reply-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.article-comment-reply-actions p { min-height: 18px; margin: 0; color: var(--ink-dim); font: 500 var(--fs-micro)/1.6 var(--font-mono); }

.article-comment-reply-actions button[type="submit"] {
  min-height: 36px;
  padding: 0 14px;
  color: #0b0e17; /* 柠檬绿块上的固定墨字，两主题同用 */
  background: var(--signal);
  border: 1px solid var(--signal);
  border-radius: 0;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  cursor: pointer;
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .16em;
  transition: background .3s var(--ease-out), color .3s var(--ease-out);
}

.article-comment-reply-actions button[type="submit"]:hover { background: color-mix(in srgb, var(--signal) 86%, #ffffff); }

/* 评论分页 · 频道刻度 */
.article-comment-pagination { display: flex; align-items: center; justify-content: center; gap: 14px; min-height: 44px; margin-top: 16px; }
.article-comment-pagination[hidden] { display: none; }

.article-comment-pagination button {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}

.article-comment-pagination button:hover:not(:disabled) { color: var(--signal-text); border-color: var(--line-strong); }
.article-comment-pagination button:disabled { opacity: .35; cursor: default; }

.article-comment-pagination span {
  min-width: 52px;
  color: var(--ink-dim);
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .12em;
  text-align: center;
}

.article-comment-pagination b { color: var(--ink); font-weight: 500; }

/* 主评论表单 · 发报台 */
.article-comments form[data-comment-form] {
  display: grid;
  gap: 14px;
  margin-top: 26px;
  padding: 22px;
  background: linear-gradient(180deg, var(--panel), color-mix(in srgb, var(--panel-2) 88%, transparent));
  border: 1px solid var(--line);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
}

.article-comments form[data-comment-form] > div:not(.article-comment-form-foot) {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.article-comments form label {
  display: grid;
  gap: 8px;
  color: var(--ink-faint);
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .2em;
}

.article-comments input,
.article-comments textarea {
  width: 100%;
  padding: 10px 0;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  outline: 0;
  resize: vertical;
  font: 400 14px/1.8 var(--font-sans), sans-serif;
  transition: border-color .3s var(--ease-out);
}

.article-comments input:focus,
.article-comments textarea:focus { border-bottom-color: var(--signal-text); }

/* 行内回复表单聚焦沿用冰蓝支轨色（写在主表单规则之后以稳定层叠） */
.article-comments .article-comment-reply-form input:focus,
.article-comments .article-comment-reply-form textarea:focus { border-bottom-color: var(--ice); }

.article-comment-form-foot { display: flex; align-items: center; gap: 12px; }

.article-comment-form-foot button[type="submit"] {
  margin-left: auto;
  min-height: 42px;
  padding: 0 18px;
  color: #0b0e17;
  background: var(--signal);
  border: 1px solid var(--signal);
  border-radius: 0;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .08em;
  transition: transform .3s var(--ease-out), background .3s var(--ease-out);
}

.article-comment-form-foot button[type="submit"]:hover { transform: translateY(-2px); }
.article-comment-form-foot button[type="submit"]:disabled { opacity: .55; cursor: wait; transform: none; }

.article-comments form > p { min-height: 18px; margin: 0; color: var(--ink-dim); font: 500 var(--fs-micro)/1.7 var(--font-mono); letter-spacing: .06em; }

/* 前往公共频道 */
.article-comment-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 30px;
  padding-bottom: 6px;
  color: var(--ink);
  border-bottom: 1px solid var(--line-strong);
  text-decoration: none;
  font-size: 12.5px;
  font-weight: 500;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}

.article-comment-link span { color: var(--acc-text, var(--signal-text)); transition: transform .3s var(--ease-out); }
.article-comment-link:hover { color: var(--signal-text); border-bottom-color: currentColor; }
.article-comment-link:hover span { transform: translateX(4px); }

/* 反垃圾蜜罐：视觉移出但保持可提交（不可 display:none） */
.comment-honeypot {
  position: absolute !important;
  left: -9999px !important;
  width: 1px !important;
  height: 1px !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 0 !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* ============================================================
   11. .reveal progressive enhancement
   Primary content is visible in HTML, screenshots, print, and failure states.
   JavaScript may add .is-visible as a harmless enhancement marker only.
   ============================================================ */
.reveal,
.reveal.is-visible,
html.obs-js .reveal,
html.obs-js .reveal.is-visible {
  opacity: 1;
  transform: none;
  filter: none;
  clip-path: none;
}

/* ============================================================
   12. 音乐彩蛋 · music-easter（HIDDEN TRACK）
   ============================================================ */
.music-easter { position: fixed; z-index: var(--z-music); right: 22px; bottom: 22px; }

.music-easter-toggle {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  clip-path: polygon(9px 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%, 0 9px);
  backdrop-filter: blur(14px);
  cursor: pointer;
  transition: border-color .3s var(--ease-out), color .3s var(--ease-out);
}

.music-easter-toggle:hover { border-color: color-mix(in srgb, var(--signal) 55%, var(--line-strong)); }
.music-easter-toggle span { color: var(--signal-text); font-size: 14px; line-height: 1; }
.music-easter-toggle b { font: 500 var(--fs-micro)/1 var(--font-mono); letter-spacing: .24em; }

.music-easter.is-playing .music-easter-toggle {
  border-color: color-mix(in srgb, var(--signal) 60%, var(--line-strong));
  box-shadow: 0 0 22px var(--signal-soft);
}

.music-easter.is-playing .music-easter-toggle span { animation: obs-note-pulse 1.6s ease-in-out infinite; }

@keyframes obs-note-pulse { 50% { opacity: .35; } }

.music-easter-panel {
  position: absolute;
  right: 0;
  bottom: 52px;
  width: min(340px, calc(100vw - 32px));
  padding: 20px;
  color: var(--ink);
  background: color-mix(in srgb, var(--panel) 96%, transparent);
  border: 1px solid var(--line-strong);
  clip-path: polygon(12px 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%, 0 12px);
  box-shadow: 0 24px 70px rgba(0, 0, 0, .4);
  backdrop-filter: blur(18px);
}

html[data-theme="light"] .music-easter-panel { box-shadow: 0 24px 60px rgba(29, 35, 42, .18); }

.music-easter-panel[hidden] { display: none; }

.music-easter-head { display: flex; align-items: start; justify-content: space-between; gap: 20px; }

.music-easter-head small {
  display: block;
  color: var(--signal-text);
  font: 500 var(--fs-micro)/1.5 var(--font-mono);
  letter-spacing: .26em;
}

.music-easter-head strong { display: block; margin-top: 5px; font: 600 19px/1.3 var(--font-serif); }

.music-easter-head button {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  padding: 0;
  color: var(--ink-dim);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  cursor: pointer;
  transition: color .3s var(--ease-out), border-color .3s var(--ease-out);
}

.music-easter-head button:hover { color: var(--ink); border-color: var(--line-strong); }

.music-wave {
  height: 44px;
  display: flex;
  align-items: center;
  gap: 2px;
  margin: 18px 0 12px;
  padding: 0 2px;
  overflow: hidden;
  border-top: 1px dashed var(--line);
  border-bottom: 1px dashed var(--line);
}

.music-wave i { flex: 1; height: 16%; background: var(--signal); opacity: .3; transform-origin: center; }

.music-easter.is-playing .music-wave i { animation: obs-music-wave 1.2s ease-in-out infinite alternate; }
.music-wave i:nth-child(3n) { animation-delay: -.7s; }
.music-wave i:nth-child(4n) { animation-delay: -.35s; }
.music-wave i:nth-child(5n) { animation-delay: -.95s; }

@keyframes obs-music-wave {
  0% { transform: scaleY(.35); opacity: .22; }
  100% { transform: scaleY(4.6); opacity: .85; }
}

.music-easter-panel > p { margin: 0 0 16px; color: var(--ink-dim); font-size: var(--fs-micro); line-height: 1.85; }

.music-controls { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 16px; }

.music-controls button {
  min-height: 38px;
  padding: 0 15px;
  color: #0b0e17;
  background: var(--signal);
  border: 0;
  border-radius: 0;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  cursor: pointer;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  transition: background .3s var(--ease-out);
}

.music-controls button:hover { background: color-mix(in srgb, var(--signal) 86%, #ffffff); }

.music-controls label {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  color: var(--ink-faint);
  font: 500 var(--fs-micro)/1 var(--font-mono);
  letter-spacing: .2em;
}

.music-controls input[type="range"] { accent-color: var(--signal); }

/* 移动端停靠进 footer（music-player.js 切换 is-footer-docked） */
.music-easter.is-footer-docked {
  position: relative;
  right: auto;
  bottom: auto;
  grid-column: 1 / -1;
  justify-self: end;
  margin-top: 8px;
}

.music-easter.is-footer-docked .music-easter-panel { bottom: 48px; }

/* 沉浸页的 dock 是一条 flex 仪器带，彩蛋按钮在这里是等高的一格。 */
.lost-signal-page .platform-utility-dock:not(.is-flowing) .music-easter.is-footer-docked,
.custom-page-body .platform-utility-dock:not(.is-flowing) .music-easter.is-footer-docked {
  grid-column: auto;
  justify-self: auto;
  flex: 0 0 auto;
  margin-top: 0;
}

.lost-signal-page .platform-utility-dock:not(.is-flowing) .music-easter.is-footer-docked .music-easter-toggle,
.custom-page-body .platform-utility-dock:not(.is-flowing) .music-easter.is-footer-docked .music-easter-toggle {
  height: 100%;
  min-height: 54px;
}

@media (max-width: 560px) {
  .platform-utility-dock .music-easter.is-footer-docked {
    grid-column: 1 / -1;
    order: 3;
    justify-self: end;
    margin: 0;
  }
}

/* ============================================================
   14. 无脚本提示 · noscript-note（值机通告票据）
   ============================================================ */
.noscript-note {
  max-width: 640px;
  margin: 40px auto;
  padding: 18px 24px;
  color: var(--ink-dim);
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.9;
  text-align: center;
}

.noscript-note a {
  color: var(--signal-text);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================================================
   15. 响应式
   ============================================================ */
@media (max-width: 1100px) {
  .article-reader-layout { grid-template-columns: 118px minmax(0, 660px) 172px; gap: 30px; width: min(1080px, calc(100% - 44px)); }
  .article-archive-mark b { min-height: 112px; }
}

@media (max-width: 860px) {
  .article-hero { height: 38vh; min-height: 260px; }

  [data-post-format="travel"] .article-hero,
  [data-post-format="travelogue"] .article-hero,
  [data-post-format="gallery"] .article-hero { height: 44vh; max-height: 430px; }

  /* 单列调阅：档案编号变横向票据条，目录变行内面板 */
  .article-reader-layout { display: flex; flex-direction: column; width: min(720px, calc(100% - 40px)); padding-bottom: 104px; }
  .article-reader-layout > *, .article-body > * { order: 5; }
  .article-body { display: contents; }

  .article-archive-mark {
    order: 1;
    position: static;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 16px;
    margin: 34px 0 0;
    padding: 14px 0;
  }

  .article-archive-mark b { min-height: 0; letter-spacing: .18em; writing-mode: horizontal-tb; }

  .article-intro { order: 2; width: 100%; margin: 0; padding-top: 34px; }
  .article-post-quick-controls { order: 2; }
  .article-format-banner { order: 3; }
  .article-body > .article-format-banner { margin-bottom: 0; }

  .article-toc { order: 4; position: static; width: 100%; margin: 30px 0 6px; padding: 18px 0 20px; border-left: 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
  .article-toc::before { display: none; }
  .article-toc-list { grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 20px; }
  .article-toc-list button::before { display: none; }

  .article-body-main { order: 6; width: 100%; margin-top: 34px; }

  [data-post-format="essay"] .article-copy blockquote,
  [data-post-format="longform"] .article-copy blockquote { margin-right: -12px; margin-left: -12px; padding: 22px 20px; }

  [data-post-format="reading"] .article-copy blockquote,
  [data-post-format="quote"] .article-copy blockquote,
  [data-post-format="review"] .article-copy blockquote { margin: 40px 0; padding: 28px 22px 24px; font-size: 19px; }

  [data-post-format="reading"] .article-copy blockquote::before,
  [data-post-format="quote"] .article-copy blockquote::before,
  [data-post-format="review"] .article-copy blockquote::before { left: 18px; }

  [data-post-format="project"] .article-copy,
  [data-post-format="case-study"] .article-copy,
  [data-post-format="timeline"] .article-copy { padding-left: 22px; }

  [data-post-format="project"] .article-copy h2::before,
  [data-post-format="case-study"] .article-copy h2::before,
  [data-post-format="timeline"] .article-copy h2::before { left: -26px; }

  [data-post-format="project"] .article-copy h2::after,
  [data-post-format="case-study"] .article-copy h2::after,
  [data-post-format="timeline"] .article-copy h2::after { left: -17px; width: 12px; }

  [data-post-format="diary"] .article-copy,
  [data-post-format="note"] .article-copy { padding-left: 22px; }

  [data-post-format="diary"] .article-copy h2,
  [data-post-format="note"] .article-copy h2 { margin-left: -22px; padding-left: 22px; }

  [data-post-format="travel"] .article-copy figure,
  [data-post-format="travelogue"] .article-copy figure,
  [data-post-format="gallery"] .article-copy figure { margin: 44px 0; }

  [data-post-format="travel"] .article-copy figcaption,
  [data-post-format="travelogue"] .article-copy figcaption,
  [data-post-format="gallery"] .article-copy figcaption { padding: 0; }

  /* 全屏级模糊在移动 GPU 上代价最高，降级为高不透明底色 */
  .music-easter-toggle,
  .music-easter-panel,
  .emoji-picker { backdrop-filter: none; }
  .music-easter-panel,
  .emoji-picker { background: color-mix(in srgb, var(--panel) 99%, transparent); }
}

@media (max-width: 620px) {
  .article-hero { height: 32vh; min-height: 220px; }
  .article-reader-layout { width: calc(100% - 36px); }
  .article-intro h1 { font-size: clamp(26px, 7.4vw, 33px); }
  .article-intro .lead { font-size: 15.5px; }
  .article-copy { font-size: 15px; }
  .article-archive-mark { grid-template-columns: 1fr; gap: 8px; }
  .article-toc-list { grid-template-columns: 1fr; }
  .article-format-banner { grid-template-columns: 32px minmax(0, 1fr); gap: 12px; padding: 12px; }
  .article-format-banner > span { width: 32px; height: 32px; }
  .article-format-banner b { overflow: visible; text-overflow: clip; white-space: normal; overflow-wrap: anywhere; }
  .article-format-banner dl { grid-template-columns: 1fr; }
  .article-format-banner dl > div { display: grid; grid-template-columns: 86px minmax(0, 1fr); align-items: baseline; gap: 10px; padding: 8px 10px; }
  .article-format-banner dd { margin-top: 0; overflow: visible; white-space: normal; overflow-wrap: anywhere; }

  .article-copy figure { margin: 36px 0; }
  .article-copy table { font-size: 11px; }
  .article-copy th, .article-copy td { padding: 9px 10px; }
  .article-copy blockquote { padding-left: 20px; font-size: 17px; }
  .article-downloads { grid-template-columns: 1fr; }

  [data-post-format="technical"] .article-copy h2,
  [data-post-format="lab-notebook"] .article-copy h2 { grid-template-columns: 30px minmax(0, 1fr); gap: 8px; font-size: 19px; }

  [data-post-format="essay"] .article-copy blockquote,
  [data-post-format="longform"] .article-copy blockquote { margin-right: 0; margin-left: 0; padding: 19px 17px; }

  [data-post-format="travel"] .article-copy > p:first-of-type::first-letter,
  [data-post-format="travelogue"] .article-copy > p:first-of-type::first-letter { font-size: 44px; }

  .article-sequence { grid-template-columns: 1fr; }
  .article-related button { grid-template-columns: minmax(0, 1fr) auto; }
  .article-related button small { grid-column: 1 / -1; }
  .article-comments form[data-comment-form] > div:not(.article-comment-form-foot) { grid-template-columns: 1fr; }
  .article-comments form[data-comment-form] { padding: 18px 16px; }

  /* iOS 聚焦缩放规避 */
  .article-comments input,
  .article-comments textarea,
  .article-comment-reply-form input,
  .article-comment-reply-form textarea { font-size: 16px; }

  .music-easter { right: 14px; bottom: 14px; }
  .music-easter-toggle { width: 44px; min-height: 44px; justify-content: center; padding: 0; }
  .music-easter-toggle b { display: none; }
}

/* ============================================================
   16. 动效降级 · prefers-reduced-motion
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html.obs-js .reveal,
  html.obs-js .reveal.is-visible {
    opacity: 1;
    transform: none;
    filter: none;
    clip-path: none;
    transition: none;
  }

  .article-reading-progress span { transition: none; }
  .music-easter.is-playing .music-wave i { animation: none; transform: scaleY(2.2); opacity: .6; }
  .music-easter.is-playing .music-easter-toggle span { animation: none; }

  .article-sequence button,
  .article-related button span,
  .article-comment-link span,
  .article-comment-form-foot button[type="submit"] { transition: none; }
}

/* ---------- 审计修复：浅色柠檬线可读化 / 音乐层级 / TOC 高亮 ---------- */
/* 浅色图纸下，--acc 源头压深 45% 向墨，全部铭牌/刻线/引用线一次修复 */
html[data-theme="light"] .article-dialog article { --acc: color-mix(in srgb, var(--post-accent, var(--signal)) 55%, var(--ink)); }
html[data-theme="light"] .custom-module-quote blockquote,
html[data-theme="light"] .free-rich-text blockquote,
html[data-theme="light"] .free-quote blockquote { border-left-color: var(--signal-text); }
html[data-theme="light"] .filter-chip::before { background: color-mix(in srgb, var(--chip-accent, var(--signal)) 55%, var(--ink)); }
html[data-theme="light"] .post-card::before { background: color-mix(in srgb, var(--post-accent, var(--signal)) 55%, var(--ink)); }
html[data-theme="light"] .post-format-line i { background: color-mix(in srgb, var(--post-accent, var(--signal)) 55%, var(--ink)); }
.music-wave i { background: var(--signal-text); }
input[type="range"] { accent-color: var(--signal-text); }
/* 音乐彩蛋抬离 HUD 底条 */
.music-easter:not(.is-footer-docked) { bottom: 46px; }
/* 文章目录滚动高亮（observatory.js 注入 is-active） */
.article-toc-list button.is-active { color: var(--ink); }
.article-toc-list button.is-active span { color: var(--acc-text, var(--signal-text)); }