/* 邓亚平x 个人网站 · 光线版
   版式：明亮的实验室界面。每页顶部有一束流动的光纤线条（canvas 绘制），向下渐隐到正文；
   边框和分隔线用细光线渐变；标签和数字用等宽字，像仪器读数；正文二级标题带两位编号。
   颜色：冷白底、深墨字，电光蓝到青色的光线做强调；视频封面的标题黄只用在光标和少量光线上。
   字体：只用系统字体，不加载网络字体（国内访问不受影响）。
   主题：刻意只做浅色一种外观。 */

:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-2: #eef3fa;
  --line: #e0e6ef;
  --line-2: #cbd5e3;
  --ink: #0f1728;
  --muted: #4f5b70;
  --dim: #7b869a;
  --accent: #1f62f0;
  --cyan: #12b5d6;
  --accent-soft: rgba(31, 98, 240, 0.07);
  --signal: #f2c200;
  --beam: linear-gradient(90deg, rgba(31, 98, 240, 0), #1f62f0 30%, #12b5d6 70%, rgba(18, 181, 214, 0));

  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Noto Sans CJK SC", "Source Han Sans SC", system-ui, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", "Roboto Mono", "Menlo", "Consolas", ui-monospace, monospace;

  --fs-k: 0.75rem;
  --fs-small: 0.8125rem;
  --fs-body: 1.0625rem;
  --fs-lead: 1.1875rem;
  --fs-h3: 1.125rem;
  --fs-h2: 1.375rem;
  --fs-h1: clamp(1.875rem, 1.25rem + 2.8vw, 2.875rem);

  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.85;
  letter-spacing: 0.01em;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
h1, h2, h3 { font-family: var(--font-body); line-height: 1.35; text-wrap: balance; margin: 0; font-weight: 700; }
p, ul { margin: 0; }
time, .meta, .byline, .sys { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
::selection { background: rgba(242, 194, 0, 0.45); }
main { position: relative; }

.wrap { max-width: 1120px; margin-inline: auto; padding-inline: 20px; position: relative; z-index: 1; }
.wrap.narrow { max-width: 760px; }

/* 等宽小标签 */
.k {
  font-family: var(--font-mono);
  font-size: var(--fs-k);
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--dim);
  text-transform: uppercase;
}
.lead { font-size: var(--fs-lead); color: var(--muted); max-width: 36em; }

/* 光线：卡片顶边一条渐变光 */
.lit { position: relative; }
.lit::before {
  content: ""; position: absolute; left: 0; right: 0; top: -1px; height: 1px;
  background: var(--beam); pointer-events: none;
}

/* 页头：底边有一道缓慢扫过的光 */
.site-head {
  position: sticky; top: 0; z-index: 10;
  padding-top: env(safe-area-inset-top, 0px);
  background: rgba(245, 247, 251, 0.82);
  -webkit-backdrop-filter: blur(12px) saturate(1.4); backdrop-filter: blur(12px) saturate(1.4);
}
.site-head::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background:
    linear-gradient(90deg, transparent, rgba(31, 98, 240, 0.9), rgba(18, 181, 214, 0.9), transparent) no-repeat,
    var(--line);
  background-size: 30% 100%, 100% 100%;
  background-position: -40% 0, 0 0;
  animation: sweep 7s ease-in-out infinite;
}
@keyframes sweep { 0% { background-position: -40% 0, 0 0; } 60%, 100% { background-position: 140% 0, 0 0; } }
.head-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 24px; padding-block: 12px; }
.brand { display: inline-flex; align-items: center; gap: 2px; font-weight: 800; font-size: 1.125rem; color: var(--ink); text-decoration: none; letter-spacing: 0.03em; }
.caret { width: 8px; height: 1.05em; background: var(--signal); margin-left: 4px; border-radius: 1px; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.site-nav { display: flex; flex-wrap: wrap; gap: 2px 4px; font-size: 0.9375rem; }
.site-nav a { color: var(--muted); text-decoration: none; padding: 4px 12px; border-radius: 999px; border: 1px solid transparent; }
.site-nav a:hover { color: var(--ink); border-color: var(--line-2); background: var(--panel); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); border-color: rgba(31, 98, 240, 0.25); }

/* 光纤线条背景（每页顶部） */
.glow { position: absolute; left: 0; right: 0; top: 0; height: 380px; pointer-events: none; z-index: 0; overflow: hidden;
  -webkit-mask-image: linear-gradient(to bottom, #000 40%, transparent 100%); mask-image: linear-gradient(to bottom, #000 40%, transparent 100%); }
.glow .lines { position: absolute; inset: 0; width: 100%; height: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.35) 35%, #000 70%); mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.35) 35%, #000 70%); }
.glow::before { content: ""; position: absolute; right: -10%; top: -40%; width: 70%; height: 140%;
  background: radial-gradient(closest-side, rgba(18, 181, 214, 0.16), rgba(31, 98, 240, 0.06) 60%, transparent); }

/* 首页 */
.hero { position: relative; overflow: hidden; }
.hero .glow { height: 100%; -webkit-mask-image: none; mask-image: none; }
.hero .glow .lines { -webkit-mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.25) 30%, #000 65%); mask-image: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.25) 30%, #000 65%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--beam); opacity: 0.7; }
.hero-inner { display: grid; gap: 16px; padding-block: 64px 52px; }
.hero h1 { font-size: var(--fs-h1); font-weight: 800; display: grid; gap: 8px; letter-spacing: 0.02em; }
.hero-sub {
  font-size: 0.5em; font-weight: 700; letter-spacing: 0.04em;
  background: linear-gradient(90deg, var(--accent), var(--cyan)); -webkit-background-clip: text; background-clip: text; color: transparent;
  justify-self: start;
}
.sys { display: flex; flex-wrap: wrap; gap: 6px 10px; font-size: var(--fs-small); color: var(--dim); padding-top: 6px; }
.sys span { padding: 3px 10px; border: 1px solid var(--line-2); border-radius: 999px; background: rgba(255, 255, 255, 0.7); }
.sys b { color: var(--accent); font-weight: 600; }

.home-grid { display: grid; gap: 44px; padding-block: 40px 72px; }
.home-grid > * { min-width: 0; }
.home-side { display: grid; gap: 36px; align-content: start; }
.topic-list { list-style: none; padding: 0; margin-top: 12px; display: grid; gap: 10px; }
.topic-list a {
  display: grid; grid-template-columns: 1fr auto; gap: 2px 12px;
  padding: 14px 16px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  text-decoration: none; color: var(--ink); box-shadow: 0 1px 2px rgba(15, 23, 40, 0.04);
}
.topic-list a:hover { border-color: rgba(31, 98, 240, 0.45); box-shadow: 0 6px 20px rgba(31, 98, 240, 0.08); }
.topic-list span { grid-column: 1 / -1; color: var(--muted); font-size: 0.9375rem; line-height: 1.6; }
.topic-list em { font-style: normal; font-family: var(--font-mono); font-size: var(--fs-small); color: var(--accent); }
.side-note { display: grid; gap: 10px; font-size: 0.9375rem; color: var(--muted); padding: 18px; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; }
.side-note strong { color: var(--ink); }
@media (min-width: 900px) {
  .home-grid { grid-template-columns: minmax(0, 1fr) 300px; gap: 64px; }
}

.more { margin-top: 14px; font-size: 0.9375rem; }
.more a { text-decoration: none; font-weight: 600; }
.more a:hover { text-decoration: underline; }

/* 页头“商务合作”按钮 */
.site-nav .nav-cta {
  color: #fff; font-weight: 600; margin-left: 6px;
  background: linear-gradient(90deg, var(--accent), var(--cyan)); border: 0;
  box-shadow: 0 4px 14px rgba(31, 98, 240, 0.22);
}
.site-nav .nav-cta:hover, .site-nav .nav-cta[aria-current="page"] { color: #fff; background: linear-gradient(90deg, var(--accent), var(--cyan)); filter: brightness(1.07); }

.badge {
  font-family: var(--font-body); font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.04em;
  color: #6b5100; background: rgba(242, 194, 0, 0.22); border: 1px solid rgba(242, 194, 0, 0.55);
  padding: 0 7px; border-radius: 4px; line-height: 1.7;
}

/* 首页：代表作 */
.home-main { display: grid; gap: 40px; align-content: start; }
.featured { display: grid; gap: 12px; }
.feat-list { display: grid; gap: 14px; }
.feat {
  display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 18px; align-items: start;
  padding: 18px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden;
  box-shadow: 0 10px 30px rgba(31, 98, 240, 0.06);
}
.feat.no-cover { grid-template-columns: minmax(0, 1fr); }
.feat-cover img { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; border-radius: 8px; box-shadow: 0 4px 14px rgba(15, 23, 40, 0.12); }
.feat-text { display: grid; gap: 8px; min-width: 0; }
.feat-title { font-size: 1.375rem; }
.feat-title a { color: var(--ink); text-decoration: none; }
.feat-title a:hover { color: var(--accent); }
.feat-stats { list-style: none; padding: 10px 0 0; margin-top: 4px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 8px 24px; }
.feat-stats li { display: grid; min-width: 0; }
.feat-stats strong { font-family: var(--font-mono); font-size: 1.125rem; color: var(--ink); line-height: 1.4; }
.feat-stats span { font-size: 0.75rem; color: var(--dim); line-height: 1.5; }
@media (max-width: 639px) {
  .feat { grid-template-columns: minmax(0, 1fr); }
  .feat-cover img { aspect-ratio: 16 / 10; object-position: center 18%; }
  .feat-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px 12px; }
}
@media (min-width: 640px) {
  .feat { grid-template-columns: 168px minmax(0, 1fr); gap: 24px; padding: 20px; }
}
.prose ul.partner-grid, .prose ul.contact-list { padding-left: 0; }

/* 首页：商务合作横条 */
.biz-band { padding-block: 0 32px; }
.biz-card {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 32px;
  padding: 26px 28px; border-radius: 16px; overflow: hidden;
  background:
    radial-gradient(60% 140% at 100% 0%, rgba(18, 181, 214, 0.14), transparent 70%),
    radial-gradient(50% 120% at 0% 100%, rgba(31, 98, 240, 0.10), transparent 70%),
    var(--panel);
  border: 1px solid var(--line);
}
.biz-text { display: grid; gap: 8px; min-width: 0; flex: 1 1 360px; }
.biz-text h2 { font-size: var(--fs-h2); }
.biz-text p:last-child { color: var(--muted); font-size: 0.9375rem; }
.btn {
  display: inline-block; flex: none; font-weight: 700; font-size: 0.9375rem; text-decoration: none; color: #fff;
  padding: 10px 20px; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--cyan));
  box-shadow: 0 6px 18px rgba(31, 98, 240, 0.25);
}
.btn:hover { filter: brightness(1.07); text-decoration: none; }

/* 商务合作页 */
.svc-grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.svc { padding: 18px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; display: grid; gap: 6px; align-content: start; overflow: hidden; }
.svc h3 { font-size: 1.0625rem; }
.svc p { color: var(--muted); font-size: 0.9375rem; line-height: 1.75; }
.contact { padding: 22px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.contact-list { list-style: none; padding: 0; display: grid; gap: 10px; }
.contact-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; padding-block: 8px; border-bottom: 1px solid var(--line); }
.contact-list li:last-child { border-bottom: 0; }
.c-label { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--dim); min-width: 6em; }
.contact-list .ch-name { font-size: 1.0625rem; overflow-wrap: anywhere; }
.contact-list .copy-btn { margin-left: auto; }
div.contact-list { gap: 12px; }
div.contact-list .copy-btn { margin-left: 0; }

/* 合作品牌墙 */
.partners { display: grid; gap: 16px; padding-block: 8px 72px; }
.partners-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 16px; padding-top: 28px; position: relative; }
.partners-head::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--beam); opacity: 0.6; }
.partners-note { font-size: var(--fs-small); color: var(--dim); }
.partner-grid { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(148px, 1fr)); gap: 10px; }
.partner {
  height: 84px; display: grid; place-items: center; padding: 14px 18px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
  text-decoration: none; color: var(--muted); position: relative; overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.partner::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--beam); opacity: 0; transition: opacity 0.3s ease; }
.partner:hover { border-color: rgba(31, 98, 240, 0.35); box-shadow: 0 6px 20px rgba(31, 98, 240, 0.08); }
.partner:hover::after { opacity: 1; }
.partner img { max-height: 36px; max-width: 100%; width: auto; object-fit: contain; filter: grayscale(1); opacity: 0.7; transition: filter 0.3s ease, opacity 0.3s ease; }
.partner:hover img { filter: none; opacity: 1; }
.pn { font-size: 1.0625rem; font-weight: 700; letter-spacing: 0.08em; color: var(--muted); }
.partner:hover .pn { color: var(--ink); }

/* 视频号合集 */
.vgroups { display: grid; gap: 44px; padding-block: 28px 72px; }
.vgroup { display: grid; gap: 6px; }
.vgroup-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.vgroup-head h2 { font-size: var(--fs-h2); }
.vgroup-head h2 a { color: var(--ink); text-decoration: none; }
.vgroup-head h2 a:hover { color: var(--accent); }
.vgroup-intro { color: var(--muted); font-size: 0.9375rem; }

/* 文章列表 */
.post-list { list-style: none; padding: 0; margin-top: 12px; display: grid; border-top: 1px solid var(--line); }
.post-item { display: grid; grid-template-columns: 84px minmax(0, 1fr); gap: 16px; padding-block: 20px; border-bottom: 1px solid var(--line); position: relative; }
.post-item::after { content: ""; position: absolute; left: 0; bottom: -1px; height: 1px; width: 0; background: var(--beam); transition: width 0.5s ease; }
.post-item:hover::after { width: 100%; }
.post-item.no-thumb { grid-template-columns: minmax(0, 1fr); }
.post-thumb img { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; border-radius: 8px; box-shadow: 0 4px 14px rgba(15, 23, 40, 0.12); }
.post-text { display: grid; gap: 6px; align-content: start; min-width: 0; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px; font-size: var(--fs-small); color: var(--dim); }
.tag { color: var(--accent); font-family: var(--font-body); font-weight: 600; }
.post-title { font-size: 1.25rem; }
.post-title a { color: var(--ink); text-decoration: none; }
.post-title a:hover { color: var(--accent); }
.post-sum { color: var(--muted); font-size: 0.9375rem; line-height: 1.75; }
@media (min-width: 640px) {
  .post-item { grid-template-columns: 120px minmax(0, 1fr); gap: 24px; }
}

/* 专题、关于 */
.page-head { padding-block: 52px 28px; display: grid; gap: 12px; margin-bottom: 8px; position: relative; }
.page-head::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--beam); opacity: 0.6; }
.page-head h1 { font-size: var(--fs-h1); font-weight: 800; }
.prose { display: grid; gap: 36px; padding-block: 28px 72px; }
.prose section { display: grid; gap: 12px; }
.prose ul, .art-body ul { padding-left: 1.2em; display: grid; gap: 6px; }
.prose li::marker, .art-body li::marker { color: var(--accent); }

/* 二级标题编号 */
.prose h2, .art-body h2 { font-size: var(--fs-h2); display: flex; align-items: baseline; gap: 14px; scroll-margin-top: 80px; }
.idx {
  font-family: var(--font-mono); font-size: 0.8125rem; font-weight: 600; color: var(--accent); letter-spacing: 0.06em;
  padding: 1px 7px; border-radius: 4px; flex: none; transform: translateY(-2px);
  background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--beam) border-box; border: 1px solid transparent;
}
.h2-t { min-width: 0; }

/* 文章页 */
.article { display: grid; gap: 32px; padding-block: 36px 72px; grid-template-areas: "head" "aside" "body"; }
.article > * { min-width: 0; }
.art-head { grid-area: head; display: grid; gap: 16px; max-width: 700px; }
.art-aside { grid-area: aside; }
.art-body { grid-area: body; max-width: 700px; display: grid; gap: 44px; }
@media (min-width: 980px) {
  .article {
    grid-template-columns: minmax(0, 700px) 300px;
    grid-template-areas: "head aside" "body aside";
    grid-template-rows: auto 1fr;
    column-gap: 64px;
    justify-content: space-between;
  }
  .art-aside { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 76px); align-self: start; }
}

.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-family: var(--font-mono); font-size: var(--fs-small); color: var(--dim); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:last-child { color: var(--accent); }
.crumbs a:hover { text-decoration: underline; }
.art-head h1 { font-size: var(--fs-h1); font-weight: 800; letter-spacing: 0.01em; }
.dek { color: var(--muted); font-size: 0.9375rem; }
.byline { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 18px; font-size: var(--fs-small); color: var(--dim); padding-block: 10px; border-block: 1px solid var(--line); }
.byline a { color: var(--ink); font-family: var(--font-body); font-weight: 700; text-decoration: none; }
.chip { font-family: var(--font-body); font-size: 0.75rem; font-weight: 700; color: var(--muted); background: var(--panel-2); border: 1px solid var(--line-2); padding: 1px 8px; border-radius: 4px; }
.summary { font-size: var(--fs-lead); line-height: 1.85; }

/* 关键数字条 */
.stats { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: 12px; background: var(--panel); overflow: hidden; box-shadow: 0 2px 10px rgba(15, 23, 40, 0.04); }
.stats li { display: grid; gap: 2px; align-content: start; padding: 16px 16px 14px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); min-width: 0; position: relative; }
.stats li::before { content: ""; position: absolute; left: 16px; right: 40%; top: 0; height: 2px; background: var(--beam); border-radius: 2px; }
.stats li:nth-child(2n) { border-right: 0; }
.stats li:nth-last-child(-n+2):nth-child(odd), .stats li:last-child { border-bottom: 0; }
.stats strong { font-family: var(--font-mono); font-size: 1.5rem; font-weight: 700; color: var(--ink); line-height: 1.3; letter-spacing: -0.01em; overflow-wrap: anywhere; }
.stats span { font-size: var(--fs-small); color: var(--muted); line-height: 1.5; }
@media (min-width: 640px) {
  .stats { grid-template-columns: none; grid-auto-columns: minmax(0, 1fr); grid-auto-flow: column; }
  .stats li, .stats li:nth-child(2n) { border-right: 1px solid var(--line); border-bottom: 0; }
  .stats li:last-child { border-right: 0; }
}

.points { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 20px 20px; display: grid; gap: 10px; overflow: hidden; }
.points .k { color: var(--accent); }
.points ul { list-style: none; padding: 0; display: grid; gap: 10px; }
.points li { position: relative; padding-left: 22px; line-height: 1.75; }
.points li::before { content: ""; position: absolute; left: 2px; top: 0.85em; width: 10px; height: 2px; background: var(--beam); border-radius: 2px; }

.art-body section { display: grid; gap: 14px; }
.art-body h3 { font-size: var(--fs-h3); }
.art-body p strong { color: var(--ink); background: linear-gradient(transparent 62%, rgba(242, 194, 0, 0.35) 62%); }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: 0.9375rem; line-height: 1.6; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-family: var(--font-mono); font-size: var(--fs-k); letter-spacing: 0.12em; color: var(--dim); font-weight: 500; background: var(--panel-2); }
tbody th { font-weight: 600; color: var(--muted); white-space: nowrap; }
tbody tr:hover > * { background: var(--accent-soft); }
tbody tr:last-child > * { border-bottom: 0; }

.faq { display: grid; gap: 12px; }
.qa { display: grid; gap: 6px; padding: 16px 18px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; }
.qa h3 { font-size: var(--fs-h3); display: flex; gap: 10px; align-items: baseline; }
.qa-a { display: flex; gap: 10px; align-items: baseline; color: var(--muted); }
.qa-a p + p { margin-top: 8px; }
.qa-k { font-family: var(--font-mono); font-size: 0.8125rem; font-weight: 700; color: var(--accent); flex: none; }
.qa-a .qa-k { color: var(--cyan); }

.data-note { font-size: var(--fs-small); color: var(--dim); border-top: 1px solid var(--line); padding-top: 14px; }

.transcript { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; }
.transcript summary { cursor: pointer; padding: 14px 18px; font-weight: 700; display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.transcript summary .k { color: var(--accent); }
.transcript-body { padding: 0 18px 18px; display: grid; gap: 12px; color: var(--muted); font-size: 0.9375rem; }

.related { display: grid; gap: 4px; }

/* 看这条视频 */
.watch { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 16px; display: grid; gap: 8px; overflow: hidden; box-shadow: 0 10px 30px rgba(31, 98, 240, 0.07); }
.watch .cover { aspect-ratio: 3 / 4; object-fit: cover; width: 100%; max-height: 380px; border-radius: 8px; }
.watch-k { font-family: var(--font-mono); font-size: var(--fs-k); letter-spacing: 0.14em; color: var(--accent); margin-top: 6px; }
.watch-h { font-size: 1.0625rem; }
.watch-title { font-size: 0.9375rem; color: var(--muted); line-height: 1.5; }
.watch-row { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 14px; align-items: center; margin-top: 6px; }
.qr { width: 112px; height: 112px; background: #fff; padding: 6px; border-radius: 8px; border: 1px solid var(--line); }
.qr-empty { display: grid; place-items: center; text-align: center; border: 1.5px dashed var(--line-2); background: var(--panel-2); color: var(--dim); font-size: 0.75rem; line-height: 1.5; padding: 0; }
.watch-how { display: grid; gap: 8px; font-size: var(--fs-small); line-height: 1.6; color: var(--muted); }
.hint { color: var(--ink); font-weight: 600; }
.ch-name { color: var(--ink); }
.copy-btn {
  justify-self: start;
  font: inherit; font-size: var(--fs-small); font-weight: 700;
  color: #fff; background: linear-gradient(90deg, var(--accent), var(--cyan));
  border: 0; border-radius: 999px;
  padding: 7px 14px; cursor: pointer; box-shadow: 0 4px 14px rgba(31, 98, 240, 0.25);
}
.copy-btn:hover { filter: brightness(1.06); }
.copy-btn[data-done] { color: var(--ink); background: var(--signal); box-shadow: none; }
@media (max-width: 979px) {
  .watch { grid-template-columns: 120px minmax(0, 1fr); column-gap: 16px; align-items: start; }
  .watch .cover { grid-row: 1 / span 4; }
  .watch-row { grid-column: 1 / -1; }
}
@media (max-width: 380px) {
  .watch { grid-template-columns: 96px minmax(0, 1fr); }
  .watch-row { grid-template-columns: 96px minmax(0, 1fr); }
  .qr { width: 96px; height: 96px; }
}

/* 页脚 */
.site-foot { position: relative; background: var(--panel); }
.site-foot::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--beam); opacity: 0.6; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 24px; padding-block: 22px 32px; font-size: var(--fs-small); color: var(--dim); }

@media (prefers-reduced-motion: reduce) {
  .caret, .site-head::after { animation: none; }
  .post-item::after { transition: none; }
}

/* 首页亮点标签 */
.highlights { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.highlights li {
  font-size: 0.875rem; font-weight: 600; color: var(--ink); padding: 4px 12px; border-radius: 999px;
  background: linear-gradient(var(--panel), var(--panel)) padding-box, var(--beam) border-box; border: 1px solid transparent;
}

/* 商业合作标注 */
.badge.biz { color: var(--accent); background: var(--accent-soft); border-color: rgba(31, 98, 240, 0.3); }
.disclosure {
  font-size: 0.875rem; color: var(--muted); padding: 8px 12px; border-radius: 8px;
  background: var(--panel-2); border: 1px solid var(--line);
}
.disclosure a { font-weight: 600; }

/* 文章底部：关于作者 */
.author-box { display: grid; gap: 10px; padding: 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.art-body .author-box h2.author-name { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; font-size: 1.25rem; }
.author-name span { font-size: 0.875rem; font-weight: 500; color: var(--muted); }
.author-box > p { color: var(--muted); font-size: 0.9375rem; }
.facts-inline { list-style: none; padding: 0 !important; display: grid; gap: 6px !important; font-size: 0.875rem; color: var(--muted); }
.facts-inline li { display: grid; grid-template-columns: 5.5em minmax(0, 1fr); gap: 12px; padding-block: 6px; border-top: 1px solid var(--line); }
.facts-inline b { color: var(--ink); font-weight: 600; }
.author-links { font-size: 0.9375rem; }
.author-links a { font-weight: 600; text-decoration: none; }
.author-links a:hover { text-decoration: underline; }

/* 频道档案表 */
table.facts tbody th { width: 7.5em; }

/* 合作品牌与案例 */
.pcases { display: grid; gap: 16px; padding-block: 28px 24px; }
.pcase { display: grid; gap: 10px; padding: 20px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; scroll-margin-top: 80px; }
.pcase-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.pcase-head h2 { font-size: var(--fs-h2); }
.pcase-logo { height: 32px; width: auto; max-width: 140px; object-fit: contain; }
.pcase-fact { font-family: var(--font-mono); font-size: var(--fs-small); color: var(--accent); }
.pcase-desc { color: var(--muted); }
.pcase .post-list { margin-top: 0; }

/* 同步稿页面 */
.wx-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; font-size: 0.9375rem; }
.wx-content { background: #fff; color: #333; padding: 24px 20px; border-radius: 12px; border: 1px solid var(--line); margin-bottom: 64px; }
.wx-content ul { padding-left: 1.2em; }
.wx-list { list-style: none; padding: 0 0 64px; display: grid; gap: 10px; }
.wx-list li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.wx-content { overflow-wrap: anywhere; min-width: 0; }
.wx-content table { table-layout: fixed; }