:root {
  --ink: #1c1914;
  --sage: #6b7f6a;
  --bone: #efe8dc;
  --brass: #c4a574;
  --paper: #f7f1e6;
  --red: #b23a2f;
  --nav-shadow: 2px 2px 0 #1c1914;
  --pin: 0 8px 18px rgba(28, 25, 20, 0.16);
  --stack: 0 1px 0 #fff, 8px 12px 0 rgba(107, 127, 106, 0.28);
  --crop: #1c1914;
  --bar: 70px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--bar); }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Georgia, serif;
  color: var(--ink);
  background: var(--paper);
  padding-top: var(--bar);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; color: inherit; cursor: pointer; }
.yx-wrap { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
.yx-eye { letter-spacing: 0.2em; font-size: 11px; font-weight: 800; color: var(--brass); }
.yx-eye.dark { color: var(--sage); }
h1 { font-size: clamp(40px, 6vw, 62px); line-height: 0.95; }
h2 { font-size: clamp(26px, 3vw, 36px); margin: 8px 0 10px; }
.yx-lead { font-size: 22px; font-weight: 700; margin: 10px 0 12px; }
.yx-sum, .yx-hint { color: #6f675c; line-height: 1.8; max-width: 38em; }
.yx-cap { margin-top: 14px; font-size: 12px; color: #8a8174; }
.yx-btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.yx-btns a {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 18px; font-weight: 800; box-shadow: var(--nav-shadow);
}
.yx-btns .a { background: var(--ink); color: var(--bone); }
.yx-btns .b { background: var(--brass); color: var(--ink); }
.yx-btns .a:hover, .yx-go:hover { filter: brightness(1.08); }

.yx-mast {
  position: fixed; inset: 0 0 auto; z-index: 40; height: var(--bar);
  background: var(--bone); border-bottom: 1px solid #d7cdbc;
}
.yx-mast-in {
  width: min(1160px, calc(100% - 32px)); height: 100%; margin: 0 auto;
  display: flex; align-items: center; gap: 18px;
}
.yx-issue { font-size: 11px; letter-spacing: 0.14em; color: var(--sage); font-weight: 800; }
.yx-brand { display: flex; align-items: center; gap: 8px; font-weight: 900; }
.yx-mark {
  width: 36px; height: 36px; object-fit: contain;
  background: #fff; box-shadow: var(--nav-shadow);
}
.yx-nav { margin-left: auto; display: flex; gap: 20px; font-size: 14px; font-weight: 700; }
.yx-nav a:hover { color: var(--sage); }
.yx-go { background: var(--ink); color: var(--bone); padding: 8px 14px; font-weight: 800; box-shadow: var(--nav-shadow); }
.yx-menu { display: none; margin-left: auto; font-weight: 800; }

.yx-hero { padding: 36px 0 48px; background: var(--sage); }
.yx-hero .yx-lead { color: var(--ink); }
.yx-hero .yx-cap { color: #8a8174; }
.yx-hero .yx-sum { color: #5c5348; }
.yx-hero .yx-eye { color: var(--sage); }
.yx-folio {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  background: var(--bone);
  color: var(--ink);
  box-shadow: var(--stack);
  overflow: visible;
}
.yx-leaf { padding: 28px 24px 22px; min-height: 480px; }
.yx-leaf.left { border-right: 1px dashed #d7cdbc; }
.yx-leaf.right { background: #fff; }
.yx-ph { display: flex; justify-content: space-between; font-size: 11px; font-weight: 800; margin-bottom: 10px; }
.yx-ph em { font-style: normal; color: var(--sage); }
.yx-find { display: block; background: #e7dfd0; padding: 8px 10px; font-size: 12px; color: #7a7266; margin-bottom: 8px; }
.yx-chips { display: flex; gap: 6px; margin-bottom: 12px; }
.yx-chips span { font-size: 11px; padding: 3px 8px; border: 1px solid #cfc4b0; }
.yx-chips .on { background: var(--ink); color: var(--bone); border-color: var(--ink); }
.yx-toc { list-style: none; display: grid; gap: 10px; margin: 12px 0 18px; }
.yx-toc li { display: flex; gap: 10px; padding: 8px 0; border-bottom: 1px solid #e7dfd0; font-size: 14px; }
.yx-toc b { color: var(--sage); }
.yx-footbar { display: flex; justify-content: space-between; font-size: 11px; padding-top: 8px; border-top: 1px solid #d7cdbc; color: #8a8174; }
.yx-footbar .on { color: var(--ink); font-weight: 800; }
.yx-full { width: 100%; height: 220px; object-fit: cover; margin-bottom: 10px; }
.yx-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.yx-pair img { width: 100%; height: 160px; object-fit: cover; }
.yx-pin {
  position: absolute; width: 150px; padding: 10px 12px; background: #fff;
  box-shadow: var(--pin); z-index: 2;
}
.yx-pin b { display: block; font-size: 10px; letter-spacing: 0.12em; color: var(--sage); }
.yx-pin.p1 { left: -12px; top: 18px; }
.yx-pin.p2 { right: -12px; top: 64px; background: var(--brass); animation: yx-bob 3.8s ease-in-out infinite; }
.yx-pin:hover { transform: translateY(-3px); }

.yx-swatch {
  padding: 56px 0;
  background: repeating-linear-gradient(90deg, rgba(28,25,20,.04) 0 1px, transparent 1px 18px), var(--paper);
}
.yx-board { margin-top: 18px; display: grid; grid-template-columns: 1.5fr 1fr; gap: 16px; }
.yx-board .big { grid-row: 1 / span 2; background: var(--ink); color: var(--bone); box-shadow: var(--stack); }
.yx-board img { width: 100%; height: 160px; object-fit: cover; }
.yx-board .big img { height: 100%; min-height: 360px; object-fit: cover; }
.yx-board figcaption { padding: 14px; }
.yx-board span { font-size: 10px; letter-spacing: 0.14em; color: var(--brass); }
.yx-board .sm { background: #fff; box-shadow: var(--pin); }
.yx-board .shift { transform: translateY(28px); }
.yx-board figure:hover { outline: 2px solid var(--sage); }

.yx-galley { padding: 56px 0 64px; background: var(--ink); color: var(--bone); }
.yx-galley .yx-hint { color: #b7ad9f; }
.yx-proof { position: relative; margin-top: 24px; max-width: 820px; }
.yx-text {
  background: var(--bone); color: var(--ink); padding: 36px 40px 28px;
  box-shadow: 16px 16px 0 var(--sage);
}
.yx-kicker { font-size: 11px; letter-spacing: 0.2em; color: var(--sage); }
.yx-text h3 { font-size: 28px; margin: 8px 0 14px; }
.yx-text p { line-height: 1.85; margin-bottom: 12px; }
.yx-meta-row { display: flex; gap: 16px; font-size: 12px; color: #8a8174; margin-top: 18px; }
.yx-note {
  position: absolute; padding: 8px 12px; background: #fff6e8; color: var(--red);
  font-size: 13px; font-weight: 700; box-shadow: var(--pin); z-index: 2;
}
.yx-note.n1 { right: -12px; top: 24px; transform: rotate(3deg); }
.yx-note.n2 { left: 40%; bottom: -18px; background: #f3d7d2; animation: yx-bob 4.2s ease-in-out infinite; }
.yx-note:hover { transform: rotate(0); }

.yx-letters { padding: 56px 0; background: var(--sage); color: var(--bone); }
.yx-letters .yx-hint { color: #e7efe4; }
.yx-letters h2 { color: #fff; }
.yx-mail { margin-top: 20px; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 14px; }
.yx-mail .feat { grid-row: span 2; background: var(--ink); color: var(--bone); padding: 28px 24px; position: relative; }
.yx-quot { position: absolute; top: 8px; right: 16px; font-size: 88px; line-height: 1; color: var(--brass); opacity: 0.45; }
.yx-mail article { background: var(--bone); color: var(--ink); padding: 16px; }
.yx-mail time, .yx-mail span { display: block; font-size: 12px; color: var(--brass); margin-bottom: 8px; }
.yx-mail p { font-size: 14px; line-height: 1.75; }
.yx-mail article:hover { outline: 3px solid var(--brass); }

.yx-faq { padding: 56px 0; background: var(--ink); color: var(--bone); }
.yx-faq-in { display: grid; grid-template-columns: 0.7fr 1.3fr; gap: 28px; align-items: start; }
.yx-qa details { background: var(--bone); color: var(--ink); margin-bottom: 8px; }
.yx-qa summary { cursor: pointer; font-weight: 800; list-style: none; padding: 12px 14px; display: flex; gap: 10px; align-items: center; }
.yx-qa summary::-webkit-details-marker { display: none; }
.yx-qa em { font-style: normal; background: var(--red); color: #fff; padding: 2px 8px; font-size: 12px; }
.yx-qa p { padding: 0 14px 12px 14px; color: #5c5348; line-height: 1.7; }

.yx-colo { position: relative; background: var(--brass); color: var(--ink); padding: 64px 0; overflow: hidden; }
.yx-giant { position: absolute; right: 4%; top: -30px; font-size: 220px; font-weight: 900; color: var(--ink); opacity: 0.12; line-height: 1; pointer-events: none; }
.yx-colo-in { display: flex; justify-content: space-between; align-items: center; gap: 24px; position: relative; z-index: 1; }
.yx-colo .yx-btns .a { background: var(--ink); color: var(--brass); }
.yx-colo .yx-btns .b { background: #fff; color: var(--ink); }
.yx-end { background: var(--ink); color: #fff; padding: 26px 0; }
.yx-end-in { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.yx-end a { color: var(--brass); }
.yx-end small { color: #cfc4b0; }

@keyframes yx-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@media (prefers-reduced-motion: reduce) { *, *::before { animation: none !important; } }
@media (max-width: 900px) {
  .yx-nav { display: none; }
  .yx-nav.open {
    display: flex; flex-direction: column; position: absolute; top: var(--bar); left: 0; right: 0;
    background: var(--bone); padding: 16px; gap: 10px; border-bottom: 1px solid #d7cdbc;
  }
  .yx-menu { display: block; }
  .yx-folio, .yx-board, .yx-colo-in, .yx-mail, .yx-faq-in { display: grid; grid-template-columns: 1fr; }
  .yx-mail .feat { grid-row: auto; }
  .yx-leaf.left { border-right: 0; border-bottom: 1px dashed #d7cdbc; }
  .yx-cols { column-count: 1; }
  .yx-pin { position: static; width: auto; margin: 8px 0; }
  .yx-pin.p2, .yx-note.n2 { animation: none; }
  .yx-board .shift { transform: none; }
  .yx-board .big img { min-height: 0; height: 200px; }
  .yx-note { position: static; transform: none; margin: 8px 0; display: inline-block; }
}