@font-face {
  font-family: "Jeva Opening Chinese";
  src: url("assets/opening-chinese.ttf") format("truetype");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}
.einstein-opening {
  --lens-x: 50%;
  --lens-y: 50%;
  --lens-radius: 0px;
  --opening-paper: #fff9ef;
  --opening-wine: #401919;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  height: clamp(370px, 43svh, 440px);
  color: var(--opening-wine);
  background: var(--opening-paper);
  border-bottom: 1px solid #e8ded0;
}
.opening-layer { position: absolute; inset: 0; overflow: hidden; background: var(--opening-paper); }
.opening-composition {
  position: relative;
  height: 100%;
  max-width: 1152px;
  margin: auto;
  padding: 20px 28px 70px;
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}
.opening-portrait {
  height: 300px;
  width: 340px;
  position: relative;
  overflow: hidden;
  mask-image: radial-gradient(ellipse 49% 48% at 51% 49%, #000 54%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 49% 48% at 51% 49%, #000 54%, transparent 100%);
  mix-blend-mode: multiply;
  opacity: .85;
}
.opening-portrait img {
  position: absolute;
  width: 500px;
  height: auto;
  max-width: none;
  left: -117px;
  top: -49px;
  filter: grayscale(1) sepia(.45) contrast(1.1);
}
.opening-quote { margin: 0; min-width: 0; }
.opening-eyebrow { font: 500 10px/1.5 var(--mono); letter-spacing: .2em; text-transform: uppercase; margin: 0 0 16px; color: #8b5c42; }
.opening-quote blockquote { margin: 0; min-height: 170px; display: flex; flex-direction: column; justify-content: center; font: 400 clamp(34px, 3.4vw, 49px)/1.24 Georgia, "Times New Roman", serif; letter-spacing: -.025em; text-wrap: balance; }
.opening-quote figcaption { margin: 18px 0 0; padding: 0; font-size: 12px; line-height: 1.6; color: #6e4135; }
.opening-authors { display: block; font-weight: 500; letter-spacing: .02em; }
.opening-quote cite { display: block; margin-top: 3px; font: italic 13px/1.5 Georgia, "Times New Roman", serif; }
.opening-symbols {
  --symbol-mask: url("data:image/svg+xml;base64,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");
  position: absolute;
  inset: 0;
  pointer-events: none;
  user-select: none;
  background: currentColor;
  opacity: .085;
  mask-image: var(--symbol-mask);
  -webkit-mask-image: var(--symbol-mask);
  mask-size: 480px 200px;
  -webkit-mask-size: 480px 200px;
  mask-repeat: repeat;
  -webkit-mask-repeat: repeat;
  mask-position: center;
  -webkit-mask-position: center;
}
.opening-reveal { z-index: 2; pointer-events: none; background: var(--opening-wine); color: #fff5df; clip-path: circle(var(--lens-radius) at var(--lens-x) var(--lens-y)); }
.opening-reveal .opening-portrait { mix-blend-mode: screen; opacity: .95; }
.opening-reveal .opening-portrait img { filter: grayscale(1) contrast(1.45) invert(1); }
.opening-reveal .opening-eyebrow { color: #e9be79; }
.opening-reveal .opening-symbols { color: #f5cf85; opacity: .12; }
.opening-reveal .opening-quote figcaption { color: #e7c4a0; }
.opening-quote blockquote[lang="zh-CN"] { position: relative; font: 500 clamp(27px, 2.6vw, 38px)/1.72 "Jeva Opening Chinese", "Songti SC", "Noto Serif CJK SC", "SimSun", serif; letter-spacing: .02em; }
.opening-quote blockquote[lang="zh-CN"] > span { display: block; }
.opening-quote blockquote[lang="zh-CN"] > span:first-child { color: #f6d56a; }
.opening-reveal .opening-quote blockquote[lang="zh-CN"] { text-indent: 0; }
.opening-controls { position: absolute; z-index: 3; bottom: 18px; left: max(28px, calc((100% - 1096px) / 2)); right: max(28px, calc((100% - 1096px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #704637; }
.opening-discover { display: flex; align-items: center; gap: 19px; }
.opening-pointer-hint { display: none; align-items: center; gap: 9px; font-size: 11px; }
.opening-pointer-hint i { width: 13px; height: 13px; border: 1px solid currentColor; border-radius: 50%; display: inline-block; }
.opening-interactive .opening-pointer-hint { display: inline-flex; }
#opening-toggle { font: 11px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: inherit; padding: 5px 0; background: transparent; border: 0; border-bottom: 1px solid #b89876; }
.opening-continue { font-size: 11px; text-decoration: none; letter-spacing: .02em; }
.opening-continue span { display: inline-block; font-size: 17px; margin-left: 16px; }
.opening-full .opening-reveal { clip-path: inset(0); }
.opening-full .opening-controls { color: #f2d9b5; }
.opening-full #opening-toggle { border-color: #bca077; }
.opening-full .opening-pointer-hint { visibility: hidden; }
.opening-fallback { position: absolute; z-index: 3; bottom: 54px; width: 100%; text-align: center; padding: 0 24px; font-size: 14px; }
@media (max-width: 1000px) {
  .opening-composition { grid-template-columns: 270px minmax(0, 1fr); gap: 32px; }
  .opening-portrait { width: 270px; height: 290px; }
  .opening-portrait img { width: 490px; left: -144px; top: -51px; }
  .opening-quote blockquote { font-size: 36px; min-height: 180px; }
  .opening-quote blockquote[lang="zh-CN"] { font-size: 29px; }
}
@media (max-width: 650px) {
  .einstein-opening { height: 500px; }
  .opening-composition { grid-template-columns: minmax(0, 1fr); grid-template-rows: 170px 1fr; align-content: center; gap: 8px; padding: 8px 28px 68px; text-align: center; }
  .opening-portrait { margin: auto; width: 170px; height: 170px; }
  .opening-portrait img { width: 285px; left: -79px; top: -34px; }
  .opening-quote { align-self: start; }
  .opening-eyebrow { font-size: 9px; margin-bottom: 8px; }
  .opening-quote blockquote { max-width: 450px; min-height: 145px; margin: auto; font-size: clamp(27px, 5.8vw, 34px); line-height: 1.25; }
  .opening-quote blockquote[lang="zh-CN"] { font-size: clamp(21px, 4.7vw, 27px); line-height: 1.75; }
  .opening-quote figcaption { margin-top: 12px; font-size: 11px; }
  .opening-quote cite { font-size: 12px; }
  .opening-symbols { mask-size: 384px 160px; -webkit-mask-size: 384px 160px; }
  .opening-controls { bottom: 18px; }
}
@media (hover: none), (pointer: coarse) {
  .opening-interactive .opening-pointer-hint { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .einstein-opening *, .einstein-opening *::before { animation: none !important; transition: none !important; }
}