/* ============================================================
   video-pipeline.css
   子页面：视频 + 编辑化长文（V2 · 严肃排版）
   - 沿用电商设计语言（红/墨黑/米色）
   - 头部不动；文章版式升级为 editorial 长文
============================================================ */

/* ---------- 引入衬线/等宽字体 ---------- */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@500;700;900&family=Source+Serif+4:ital,wght@0,400;0,600;0,800;1,400&family=JetBrains+Mono:wght@400;600;800&family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* ---------- 双栏布局 ---------- */
.vp-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(1.5rem, 3vw, 3rem);
  max-width: 1500px;
  margin: 0 auto;
  padding: clamp(1.5rem, 3vw, 3rem) clamp(1rem, 3vw, 2.5rem) clamp(3rem, 5vw, 5rem);
}
@media (max-width: 1024px) {
  .vp-section { grid-template-columns: 1fr; }
}

/* ---------- 播放器 ---------- */
.vp-player-wrap {
  display: flex; flex-direction: column; align-items: center; gap: 0.9rem;
  position: sticky; top: 1rem; align-self: start;
}
@media (max-width: 1024px) { .vp-player-wrap { position: relative; top: auto; } }

.vp-frame {
  position: relative;
  width: 100%; max-width: 420px;
  aspect-ratio: 9 / 16;
  background: #111;
  border-radius: 32px;
  padding: 14px;
  box-shadow:
    0 2px 0 rgba(0,0,0,0.15),
    6px 10px 0 var(--accent, #C7323B),
    12px 18px 36px rgba(0,0,0,0.32);
  transform: rotate(-0.6deg);
  transition: transform 300ms ease, box-shadow 300ms ease;
}
.vp-frame:hover {
  transform: rotate(0) translateY(-4px) scale(1.01);
  box-shadow:
    0 2px 0 rgba(0,0,0,0.15),
    8px 12px 0 var(--accent, #C7323B),
    16px 22px 40px rgba(0,0,0,0.3);
}
.vp-notch {
  position: absolute; top: 14px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 22px; background: #000; border-radius: 0 0 14px 14px;
  z-index: 20;
}
.vp-screen {
  position: relative; width: 100%; height: 100%;
  border-radius: 22px; overflow: hidden; background: #0a0a0a;
  display: flex; flex-direction: column;
}
.vp-video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; display: block; background: #000;
}
.vp-center-play {
  position: absolute; inset: 0; margin: auto;
  width: 88px; height: 88px; border-radius: 50%;
  background: rgba(255,255,255,0.92);
  border: none; cursor: pointer; z-index: 30;
  display: flex; align-items: center; justify-content: center;
  color: #111; font-size: 28px;
  box-shadow: 0 12px 32px rgba(0,0,0,0.5);
  transition: transform 200ms, opacity 240ms;
}
.vp-center-play:hover { transform: scale(1.06); }
.vp-center-play i { margin-left: 4px; }

.vp-subtitle {
  position: absolute; left: 0; right: 0;
  bottom: 78px; padding: 0 18px; z-index: 25;
  text-align: center;
  color: #fff; font-size: 16px; font-weight: 700; line-height: 1.4;
  text-shadow: 0 2px 4px rgba(0,0,0,0.85), 0 0 12px rgba(0,0,0,0.6);
  pointer-events: none; min-height: 22px;
}
.vp-controls {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 28;
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px 14px;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.75) 100%);
  color: #fff; opacity: 1; transition: opacity 240ms;
  font-size: 13px;
}
.vp-btn {
  background: transparent; border: 0; color: #fff; cursor: pointer;
  width: 32px; height: 32px; display: flex; align-items: center; justify-content: center;
  border-radius: 6px; transition: background 160ms;
}
.vp-btn:hover { background: rgba(255,255,255,0.16); }
.vp-time { font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; font-size: 12px; opacity: 0.9; min-width: 92px; text-align: center; }
.vp-progress { position: relative; flex: 1 1 auto; height: 6px; background: rgba(255,255,255,0.25); border-radius: 999px; cursor: pointer; outline: none; }
.vp-progress-bar { position: absolute; left: 0; top: 0; bottom: 0; width: 0%; background: var(--accent, #C7323B); border-radius: 999px; }
.vp-progress-handle { position: absolute; top: 50%; width: 14px; height: 14px; background: #fff; border: 2px solid var(--accent, #C7323B); border-radius: 50%; transform: translate(-50%, -50%); left: 0%; box-shadow: 0 2px 6px rgba(0,0,0,0.4); pointer-events: none; }
.vp-volume { width: 80px; accent-color: var(--accent, #C7323B); }
.vp-full i, .vp-mute i, .vp-play i { font-size: 14px; }

.vp-caption {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  text-align: center;
}
.vp-caption .pc-num { font-family: 'JetBrains Mono', monospace; font-size: 12px; color: #555; letter-spacing: 0.05em; }
.vp-caption .pc-name { font-size: 18px; font-weight: 800; letter-spacing: 0.02em; font-family: 'Noto Sans SC', sans-serif; }
.vp-caption .pc-cat { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: #555; letter-spacing: 0.1em; text-transform: uppercase; }

/* ============================================================
   Editorial 长文版式
============================================================ */
:root {
  --vp-paper: #FBF6EC;       /* 米色纸面 */
  --vp-paper-2: #F2EBD9;     /* 米色副 */
  --vp-ink: #14110E;         /* 墨黑 */
  --vp-ink-soft: #5B544A;    /* 墨灰 */
  --vp-rule: #14110E;        /* 描边 */
  --vp-red: #C7323B;         /* 红 */
  --vp-serif: 'Source Serif 4', 'Noto Serif SC', Georgia, serif;
  --vp-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --vp-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Consolas, monospace;
}

.vp-article {
  /* 米色纸面 + 硬阴影 + 双线边 */
  background:
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(20,17,14,0.045) 31px 32px),
    var(--vp-paper);
  border: 1.5px solid var(--vp-rule);
  border-radius: 4px;
  padding: clamp(1.6rem, 3vw, 3rem) clamp(1.4rem, 3vw, 3rem);
  box-shadow:
    8px 8px 0 var(--vp-rule),
    0 0 0 6px var(--vp-paper),
    0 0 0 7.5px var(--vp-rule);
  font-family: var(--vp-serif);
  color: var(--vp-ink);
  line-height: 1.85;
  position: relative;
}

/* 顶角红色刊头 */
.vp-article::before {
  content: 'CASE · NO.05';
  position: absolute; top: -14px; right: 22px;
  font-family: var(--vp-mono);
  font-size: 10px; letter-spacing: 0.22em;
  padding: 4px 10px;
  background: var(--vp-red); color: var(--vp-paper);
  border: 1.5px solid var(--vp-rule);
}

/* ---------- 文档级 head ---------- */
.vp-doc-head {
  border-bottom: 1.5px solid var(--vp-rule);
  padding-bottom: 1.6rem;
  margin-bottom: 2rem;
}
.vp-doc-meta {
  font-family: var(--vp-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--vp-ink-soft);
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 1rem;
}
.vp-doc-title { margin-bottom: 1.2rem; }
.vp-h2 {
  font-family: var(--vp-serif);
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.2; font-weight: 800;
  letter-spacing: -0.012em;
  margin: 0 0 0.5rem;
  color: var(--vp-ink);
}
.vp-h2-en {
  font-family: var(--vp-serif);
  font-style: italic; font-weight: 400;
  font-size: clamp(13px, 1.2vw, 16px);
  color: var(--vp-ink-soft);
  margin: 0; line-height: 1.5;
  padding-left: 12px;
  border-left: 2px solid var(--vp-red);
}
.vp-doc-byline {
  font-family: var(--vp-mono);
  font-size: 11px; letter-spacing: 0.06em;
  color: var(--vp-ink-soft);
  display: flex; flex-wrap: wrap; gap: 8px;
  padding-top: 0.6rem;
  border-top: 1px dashed var(--vp-rule);
}
.vp-doc-byline b { color: var(--vp-ink); }

/* ---------- 摘要卡（编辑化 data block） ---------- */
.vp-abstract {
  margin-top: 1.4rem;
  background: var(--vp-paper-2);
  border: 1px solid var(--vp-rule);
  padding: 0.6rem 0;
}
.vp-abstract dl {
  display: grid; grid-template-columns: repeat(3, 1fr);
  margin: 0;
}
.vp-abstract dl > div {
  display: flex; flex-direction: column; gap: 4px;
  padding: 0.8rem 1rem;
  border-right: 1px solid var(--vp-rule);
  border-bottom: 1px solid var(--vp-rule);
}
.vp-abstract dl > div:nth-child(3n) { border-right: 0; }
.vp-abstract dl > div:nth-last-child(-n+3) { border-bottom: 0; }
.vp-abstract dt {
  font-family: var(--vp-mono);
  font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--vp-red);
}
.vp-abstract dd {
  font-family: var(--vp-serif);
  font-size: 14.5px; font-weight: 600;
  margin: 0; line-height: 1.4;
  color: var(--vp-ink);
}
@media (max-width: 720px) {
  .vp-abstract dl { grid-template-columns: 1fr 1fr; }
  .vp-abstract dl > div:nth-child(3n) { border-right: 1px solid var(--vp-rule); }
  .vp-abstract dl > div:nth-child(2n) { border-right: 0; }
}

/* ---------- 正文 ---------- */
.vp-doc-body { font-size: 16px; }

.vp-doc-section { margin: 2.4rem 0; }
.vp-doc-section + .vp-doc-section { border-top: 1px dashed rgba(20,17,14,0.25); padding-top: 2.2rem; }

.vp-section-h {
  display: flex; align-items: baseline; gap: 0.8rem;
  margin-bottom: 1.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1.5px solid var(--vp-rule);
}
.vp-section-num {
  font-family: var(--vp-mono);
  font-size: 13px; font-weight: 800;
  color: var(--vp-paper);
  background: var(--vp-ink);
  padding: 2px 8px;
  letter-spacing: 0.04em;
  position: relative; top: -2px;
}
.vp-section-h h3 {
  font-family: var(--vp-serif);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 800;
  margin: 0;
  letter-spacing: -0.005em;
}

.vp-lead {
  font-size: clamp(17px, 1.5vw, 19px);
  line-height: 1.95;
  font-weight: 500;
}
.vp-lead b { color: var(--vp-red); font-weight: 700; }

.vp-doc-body p { margin: 1rem 0; }
.vp-doc-body p strong { color: var(--vp-ink); }
.vp-doc-body p em { color: var(--vp-red); font-style: normal; font-weight: 600; }
.vp-doc-body code {
  font-family: var(--vp-mono);
  font-size: 0.92em;
  background: var(--vp-paper-2);
  padding: 1px 6px;
  border: 1px solid var(--vp-rule);
  border-radius: 2px;
}

/* 段首大字下沉 */
.vp-dropcap {
  float: left;
  font-family: var(--vp-serif);
  font-weight: 900;
  font-size: clamp(56px, 7vw, 86px);
  line-height: 0.85;
  padding: 6px 12px 0 0;
  margin-top: 4px;
  color: var(--vp-red);
  text-shadow: 2px 2px 0 var(--vp-rule);
}

/* ---------- 引用块 ---------- */
.vp-quote {
  margin: 1.6rem 0;
  padding: 1.2rem 1.4rem 1.2rem 1.6rem;
  border-left: 4px solid var(--vp-red);
  background: rgba(199,50,59,0.05);
  font-family: var(--vp-serif);
  font-style: italic;
  font-size: 17px;
  line-height: 1.75;
  color: var(--vp-ink);
}
.vp-quote p { margin: 0; }
.vp-quote p + p { margin-top: 0.5rem; }
.vp-quote b { color: var(--vp-red); font-style: normal; }

/* ---------- callout（旁注盒） ---------- */
.vp-callout {
  margin: 1.4rem 0;
  padding: 1rem 1.2rem;
  border: 1.5px solid var(--vp-ink);
  background: var(--vp-paper-2);
  position: relative;
  font-size: 15px;
  line-height: 1.8;
}
.vp-callout-h {
  display: inline-block;
  font-family: var(--vp-mono);
  font-size: 10px; letter-spacing: 0.22em; text-transform: uppercase;
  background: var(--vp-ink); color: var(--vp-paper);
  padding: 3px 8px;
  margin-bottom: 0.5rem;
}
.vp-callout p { margin: 0; }
.vp-callout b { color: var(--vp-red); }
.vp-callout em { color: var(--vp-red); font-style: normal; font-weight: 600; }
.vp-callout-num {
  background: var(--vp-red); color: var(--vp-paper);
}
.vp-callout-num .vp-callout-h { background: var(--vp-paper); color: var(--vp-red); }
.vp-callout-num p { color: var(--vp-paper); }
.vp-callout-num b { color: var(--vp-paper); text-decoration: underline; text-decoration-color: var(--vp-paper); }
.vp-callout-num em { color: var(--vp-paper); }

/* ---------- 数字列表 ---------- */
.vp-num-list {
  list-style: none; padding: 0; margin: 1rem 0;
  counter-reset: vpnum;
}
.vp-num-list li {
  position: relative; padding: 0.6rem 0 0.6rem 2.6rem;
  border-bottom: 1px dashed rgba(20,17,14,0.25);
  counter-increment: vpnum;
  font-size: 15.5px; line-height: 1.8;
}
.vp-num-list li:last-child { border-bottom: 0; }
.vp-num-list li::before {
  content: counter(vpnum, decimal-leading-zero);
  position: absolute; left: 0; top: 0.7rem;
  font-family: var(--vp-mono);
  font-weight: 800; font-size: 13px;
  color: var(--vp-red);
  letter-spacing: 0.04em;
}
.vp-num-list b { color: var(--vp-ink); }

/* ---------- 项目列表 ---------- */
.vp-bullet-list { list-style: none; padding: 0; margin: 1rem 0; }
.vp-bullet-list li {
  position: relative; padding: 0.45rem 0 0.45rem 1.4rem;
  border-bottom: 1px dashed rgba(20,17,14,0.2);
  font-size: 15.5px; line-height: 1.8;
}
.vp-bullet-list li:last-child { border-bottom: 0; }
.vp-bullet-list li::before {
  content: ''; position: absolute; left: 0; top: 1.05rem;
  width: 8px; height: 8px;
  background: var(--vp-red);
}
.vp-bullet-list b { color: var(--vp-ink); }

/* ---------- 目录 ---------- */
.vp-toc {
  margin: 2rem 0 2.2rem;
  padding: 1.2rem 1.4rem;
  border: 1.5px solid var(--vp-ink);
  background: var(--vp-paper-2);
}
.vp-toc-h {
  font-family: var(--vp-mono);
  font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--vp-red);
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px dashed var(--vp-ink);
}
.vp-toc ol {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.4rem;
}
.vp-toc li {
  display: flex; align-items: baseline; gap: 0.6rem;
  font-family: var(--vp-serif);
  font-size: 14.5px;
}
.vp-toc li .n {
  font-family: var(--vp-mono); font-weight: 800; font-size: 12px;
  color: var(--vp-red);
}
.vp-toc li a { color: var(--vp-ink); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color 160ms; }
.vp-toc li a:hover { border-bottom-color: var(--vp-red); }
@media (max-width: 600px) { .vp-toc ol { grid-template-columns: 1fr; } }

/* ---------- 代码块 ---------- */
.vp-codeblock {
  font-family: var(--vp-mono);
  font-size: 12.5px; line-height: 1.65;
  background: var(--vp-ink);
  color: #F2EBD9;
  padding: 1rem 1.2rem;
  border: 1.5px solid var(--vp-ink);
  overflow-x: auto;
  margin: 1.2rem 0;
}
.vp-codeblock code { color: inherit; background: none; border: 0; padding: 0; font-size: inherit; }

/* ---------- 收尾 ---------- */
.vp-doc-end {
  border-top: 1.5px solid var(--vp-rule);
  padding-top: 1.8rem;
  margin-top: 2.6rem;
  text-align: center;
}
.vp-doc-end .vp-lead { max-width: 60ch; margin: 0 auto; }

/* ---------- 数据脚 ---------- */
.vp-doc-foot {
  margin-top: 2.4rem;
  padding-top: 1.6rem;
  border-top: 1.5px solid var(--vp-rule);
}
.vp-tally {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 0;
  border: 1.5px solid var(--vp-ink);
  background: var(--vp-paper-2);
  margin-bottom: 1rem;
}
.vp-tally > div {
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 1rem 0.6rem;
  text-align: center;
  border-right: 1px solid var(--vp-ink);
}
.vp-tally > div:last-child { border-right: 0; }
.vp-tally b {
  font-family: var(--vp-serif); font-weight: 800;
  font-size: clamp(18px, 2vw, 24px);
  color: var(--vp-red);
  letter-spacing: -0.01em;
}
.vp-tally span {
  font-family: var(--vp-mono);
  font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--vp-ink-soft);
}
.vp-foot-note {
  font-family: var(--vp-serif);
  font-size: 14px; line-height: 1.8;
  color: var(--vp-ink-soft);
  font-style: italic;
  margin: 0;
  padding: 0.6rem 0 0;
}

@media (max-width: 800px) {
  .vp-tally { grid-template-columns: repeat(3, 1fr); }
  .vp-tally > div { border-bottom: 1px solid var(--vp-ink); }
  .vp-tally > div:nth-child(3n) { border-right: 0; }
  .vp-tally > div:nth-last-child(-n+3) { border-bottom: 0; }
}
@media (max-width: 480px) {
  .vp-tally { grid-template-columns: repeat(2, 1fr); }
  .vp-tally > div { border-right: 1px solid var(--vp-ink); border-bottom: 1px solid var(--vp-ink); }
  .vp-tally > div:nth-child(2n) { border-right: 0; }
  .vp-tally > div:nth-last-child(-n+2) { border-bottom: 0; }
}