/* 拆书集 · 主样式 —— 纸感、衬线、矿物色、丝带书签 */

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  transition: background 0.35s, color 0.35s;
}

/* 纸的呼吸感：极淡的纤维噪点 */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  opacity: 0.5;
  background-image: radial-gradient(rgba(120, 100, 60, 0.05) 1px, transparent 1px);
  background-size: 22px 22px;
  z-index: 0;
}
.theme-dark body::before { opacity: 0.25; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
svg { display: block; }
::selection { background: rgba(182, 72, 46, 0.25); }

/* ── 导航 ─────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  display: flex; align-items: center; gap: 28px;
  padding: 0 clamp(20px, 4vw, 48px);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.nav-brand { display: flex; align-items: baseline; gap: 10px; }
.nav-brand b { font-size: 19px; letter-spacing: 2px; }
.nav-brand span { font-family: var(--font-mono); font-size: 10.5px; color: var(--ink-3); letter-spacing: 1.5px; }
.nav-links { margin-left: auto; display: flex; gap: 4px; }
.nav-links a {
  padding: 7px 14px; border-radius: 999px;
  font-size: 14.5px; color: var(--ink-2);
  transition: background 0.2s, color 0.2s;
}
.nav-links a:hover { background: var(--paper-2); color: var(--ink); }
.nav-links a.on { background: var(--ink); color: var(--paper); }
.theme-btn {
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--hairline); background: var(--card);
  display: grid; place-items: center; color: var(--cinnabar);
  transition: transform 0.25s var(--ease-out), border-color 0.2s;
}
.theme-btn:hover { transform: rotate(24deg) scale(1.06); border-color: var(--cinnabar); }

/* ── 书阁（首页） ─────────────────────── */
.hero {
  position: relative;
  max-width: 1280px; margin: 0 auto;
  padding: clamp(40px, 7vh, 84px) clamp(20px, 4vw, 48px) 40px;
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(24px, 4vw, 64px); align-items: center;
  min-height: calc(100vh - var(--nav-h) - 120px);
}
.kicker {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 3px;
  color: var(--cinnabar); margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(52px, 7.5vw, 92px);
  font-weight: 700; letter-spacing: 0.04em; line-height: 1.12;
}
.hero .en {
  font-family: var(--font-mono); font-size: clamp(13px, 1.4vw, 16px);
  color: var(--ink-3); letter-spacing: 1px; margin: 14px 0 6px;
}
.tagline {
  font-family: var(--font-kai); font-size: clamp(18px, 2vw, 22px);
  color: var(--cinnabar); margin-bottom: 22px;
}
.meta-row { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
.meta-row span {
  font-size: 13px; color: var(--ink-2);
  border: 1px solid var(--hairline); border-radius: 999px; padding: 4px 14px;
  background: var(--card);
}
.intro { max-width: 56ch; font-size: 16.5px; line-height: 2; color: var(--ink-2); margin-bottom: 36px; }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 30px; border-radius: 999px; font-size: 15.5px; letter-spacing: 2px;
  border: 1px solid transparent; transition: transform 0.25s var(--ease-out), box-shadow 0.25s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--cinnabar); color: var(--on-accent); box-shadow: var(--shadow-card); }
.btn-primary:hover { background: var(--cinnabar-deep); box-shadow: var(--shadow-float); }
.theme-dark .btn-primary { background: var(--cinnabar); color: #241b12; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--hairline); }
.btn-ghost:hover { border-color: var(--ink-3); background: var(--paper-2); }

/* 在场网格条带（书阁 hero 下方） */
.presence-strip {
  max-width: 1280px; margin: 0 auto;
  padding: 40px clamp(20px, 4vw, 48px) 72px;
  display: grid; grid-template-columns: 280px 1fr; gap: clamp(20px, 3vw, 48px);
  align-items: center;
  border-top: 1px solid var(--hairline);
}
.presence-strip h2 { font-size: 22px; font-weight: 700; letter-spacing: 0.06em; margin-bottom: 8px; }
.presence-strip .strip-copy p { font-family: var(--font-kai); font-size: 14px; color: var(--ink-3); margin-bottom: 14px; }
.strip-grid { overflow-x: auto; padding-bottom: 6px; }
@media (max-width: 900px) {
  .presence-strip { grid-template-columns: 1fr; }
}

/* ── 3D 书 ────────────────────────────── */
.stage {
  position: relative;
  display: grid; place-items: center;
  min-height: clamp(440px, 62vh, 620px);
  perspective: 1800px;
}
.stage-hint {
  position: absolute; bottom: -4px;
  font-family: var(--font-kai); font-size: 14px; color: var(--ink-3);
  letter-spacing: 2px; transition: opacity 0.4s;
}
.book {
  --bw: clamp(240px, 26vw, 330px);      /* 书宽 */
  --bh: calc(var(--bw) * 1.42);          /* 书高 */
  --bt: calc(var(--bw) * 0.085);         /* 页厚 */
  position: relative;
  width: var(--bw); height: var(--bh);
  transform-style: preserve-3d;
  transform: rotateX(14deg) rotateY(-26deg);
  transition: transform 1.1s var(--ease-out);
  cursor: pointer;
}
.book:hover { transform: rotateX(10deg) rotateY(-20deg); }
.book.exploded { cursor: default; transform: rotateX(7deg) rotateY(-16deg) translateX(6%) scale(0.86); }

/* 封面/封底/书脊 */
.book-cover, .book-spine { position: absolute; background: var(--cloth, #a03d28); }
.book-cover {
  inset: -10px; border-radius: 4px 9px 9px 4px;
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, 0.07), rgba(0, 0, 0, 0.12)),
    var(--cloth, #a03d28);
  box-shadow: var(--shadow-book);
  transition: transform 1.2s var(--ease-out);
}
.book-cover.front {
  transform: translateZ(calc(var(--bt) / 2 + 3px));
  transform-origin: left center;
  display: grid; place-items: center; align-content: center; gap: 14px;
}
.book.exploded .book-cover.front {
  transform: translateZ(calc(var(--bt) / 2 + 3px)) rotateY(-116deg);
  filter: brightness(0.94);
}
.cover-inner {
  position: absolute; inset: 0; border-radius: inherit;
  background: linear-gradient(120deg, rgba(0, 0, 0, 0.22), rgba(0, 0, 0, 0.05));
  opacity: 0; transition: opacity 0.6s 0.35s;
}
.book.exploded .cover-inner { opacity: 1; }
.book.exploded .book-cover.front .foil,
.book.exploded .book-cover.front .foil-en { opacity: 0; transition: opacity 0.3s; }
.book-cover.front .foil, .book-cover.front .foil-en { transition: opacity 0.5s 0.5s; }
.book-cover.front .foil {
  writing-mode: vertical-rl;
  font-size: calc(var(--bw) * 0.115); font-weight: 700; letter-spacing: 0.32em;
  color: var(--foil, #e8c37a); text-shadow: 0 1px 0 rgba(0, 0, 0, 0.25);
}
.book-cover.front .foil-en {
  font-family: var(--font-mono); font-size: calc(var(--bw) * 0.028);
  color: var(--foil, #e8c37a); opacity: 0.85; letter-spacing: 1px;
  writing-mode: horizontal-tb; text-align: center; margin-top: 6px;
}
.book-cover.front::after {  /* 烫金框 */
  content: ""; position: absolute; inset: 16px;
  border: 1.5px solid var(--foil, #e8c37a); border-radius: 3px 7px 7px 3px;
  opacity: 0.9;
}
.book-cover.back { transform: translateZ(calc(var(--bt) / -2 - 3px)); border-radius: 4px 9px 9px 4px; }
.book-spine {
  left: -10px; top: -10px; bottom: -10px; width: calc(var(--bt) + 8px);
  transform: rotateY(90deg) translateZ(calc(var(--bt) / 2));
  transform-origin: left center;
  border-radius: 3px;
  background-image: linear-gradient(90deg, rgba(0, 0, 0, 0.28), rgba(255, 255, 255, 0.06) 55%, rgba(0, 0, 0, 0.18));
}

/* 页块：闭合时是一整块，拆开时逐层分离 */
.pages { position: absolute; inset: -2px; transform-style: preserve-3d; }
.slab {
  position: absolute; left: 0; right: 0; top: 0; bottom: 0;
  background: linear-gradient(90deg, #efe8d6, #f8f3e4 30%, #efe8d6);
  border-radius: 2px 6px 6px 2px;
  transform: translateZ(calc(var(--z, 0) * 1px));
  transition: transform 1.1s var(--ease-out), box-shadow 0.4s;
  box-shadow: 0 1px 0 rgba(120, 100, 60, 0.35);
}
.theme-dark .slab { background: linear-gradient(90deg, #d9d0b8, #efe8d3 30%, #d9d0b8); }
.slab .slab-side {  /* 切口：章节矿物色 + 页纹 */
  position: absolute; right: -4px; top: 0; bottom: 0; width: 4px;
  background: repeating-linear-gradient(0deg, var(--cc, var(--cinnabar)) 0 3px, rgba(0,0,0,0.15) 3px 4px);
  opacity: 0;
  transition: opacity 0.5s 0.4s;
}
.book.exploded .slab .slab-side { opacity: 1; }
.book.exploded .slab {
  transform: translate3d(var(--ex, 0px), var(--ey, 0px), var(--ez, 0px)) rotateY(var(--ery, 0deg));
  cursor: pointer;
}
.slab:hover { box-shadow: var(--shadow-float); filter: brightness(1.03); }
.slab .slab-label {
  position: absolute; right: 10px; top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-size: 13px; letter-spacing: 4px; color: var(--ink-2);
  opacity: 0; transition: opacity 0.45s 0.35s;
}
.book.exploded .slab:hover .slab-label { opacity: 1; }

/* 丝带书签：挂在每层页块下缘 */
.ribbon {
  position: absolute; bottom: -8px; left: 50%;
  width: 16px; height: 0;
  transform-origin: top center;
  transform: translateX(-50%);
  transition: height 0.9s var(--ease-out) 0.45s;
}
.ribbon::before {  /* 织纹 */
  content: ""; position: absolute; inset: 0;
  background:
    repeating-linear-gradient(45deg, rgba(255,255,255,0.16) 0 2px, transparent 2px 5px),
    var(--cc, var(--cinnabar));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% calc(100% - 7px), 0 100%);
  box-shadow: 0 1px 2px rgba(60, 48, 28, 0.3);
}
.book.exploded .ribbon { height: calc(30px + var(--i, 0) * 9px); }
.book.exploded .slab:hover .ribbon { height: calc(40px + var(--i, 0) * 9px); }
.ribbon { animation: sway 3.6s ease-in-out infinite alternate; animation-delay: calc(var(--i, 0) * -0.7s); }
@keyframes sway {
  from { rotate: -2.4deg; }
  to { rotate: 2.4deg; }
}

/* 合上按钮 */
.stage .close-book {
  position: absolute; top: 0; right: 0;
  font-size: 13px; color: var(--ink-3);
  background: var(--card); border: 1px solid var(--hairline); border-radius: 999px;
  padding: 6px 16px; letter-spacing: 2px;
  opacity: 0; pointer-events: none; transition: opacity 0.4s 0.8s;
}
.book.exploded ~ .stage-hint { opacity: 0; }
.stage.exploded .close-book { opacity: 1; pointer-events: auto; }
.stage.exploded .close-book:hover { color: var(--cinnabar); border-color: var(--cinnabar); }

/* ── 通用版心 ─────────────────────────── */
.wrap { max-width: 1080px; margin: 0 auto; padding: clamp(28px, 5vh, 56px) clamp(20px, 4vw, 48px) 80px; }
.wrap.wide { max-width: 1280px; }

/* ── 阅读视图 + 动态书签轨 ─────────────── */
.reader-layout { position: relative; }
.reader-main { max-width: 760px; margin: 0 auto; padding: 40px clamp(20px, 4vw, 48px) 90px; }
.reader-top {
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 12px; color: var(--ink-3);
  margin-bottom: 48px;
}
.reader-top a:hover { color: var(--cinnabar); }
.reader-top .divider { flex: 1; height: 1px; background: var(--hairline); }

.chap { padding: 64px 0 30px; scroll-margin-top: calc(var(--nav-h) + 24px); }
.chap + .chap { border-top: 1px solid var(--hairline); }
.chap-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 10px; }
.chap-no {
  font-size: clamp(40px, 5vw, 56px); font-weight: 700; line-height: 1;
  color: var(--cc, var(--cinnabar)); opacity: 0.92;
}
.chap-title { font-size: clamp(28px, 3.6vw, 40px); font-weight: 700; letter-spacing: 0.04em; }
.chap-sub { font-family: var(--font-kai); font-size: 16.5px; color: var(--ink-3); margin-bottom: 26px; }

.chap-lead { position: relative; padding: 4px 0 4px 20px; margin-bottom: 34px; }
.chap-lead::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 3px; background: var(--cc, var(--cinnabar)); border-radius: 2px; }
.chap-lead .lead-tag {
  display: inline-block; font-size: 12px; letter-spacing: 3px;
  color: var(--cc, var(--cinnabar)); margin-bottom: 8px;
}
.chap-lead p { font-size: 17.5px; line-height: 2.05; color: var(--ink); }

.note { margin-bottom: 30px; }
.note h3 {
  font-size: 16.5px; font-weight: 700; letter-spacing: 0.03em;
  display: flex; align-items: center; gap: 10px; margin-bottom: 10px;
}
.note h3::before { content: ""; width: 9px; height: 9px; background: var(--cc, var(--cinnabar)); transform: rotate(45deg); flex: none; }
.note p { font-size: 16.5px; line-height: 2; color: var(--ink-2); }

.chap-foot { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 34px; align-items: center; }
.chip {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; color: var(--ink-2);
  background: var(--card); border: 1px solid var(--hairline); border-radius: 999px;
  padding: 5px 14px; transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
a.chip:hover { border-color: var(--cc, var(--cinnabar)); color: var(--ink); transform: translateY(-1px); }
.chip .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cc, var(--cinnabar)); }
.chip .cnt { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); }

.reader-pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 64px; padding-top: 28px; border-top: 1px solid var(--hairline); }
.reader-pager a { font-size: 14.5px; color: var(--ink-3); }
.reader-pager a:hover { color: var(--cinnabar); }
.reader-pager a b { display: block; font-size: 16px; color: var(--ink); font-weight: 700; }

/* 动态书签轨（桌面：右缘垂直） */
.rail {
  position: fixed; right: clamp(10px, 2.6vw, 40px); top: 50%;
  transform: translateY(-50%);
  height: min(72vh, 640px); width: 92px; z-index: 40;
  display: flex; justify-content: flex-end; align-items: stretch;
}
.rail-track { position: relative; width: 5px; border-radius: 3px; background: var(--paper-3); margin-right: 8px; }
.rail-ribbon {
  position: absolute; right: -22px; top: var(--top); height: var(--hh);
  width: 20px; border-radius: 3px 0 0 3px;
  background:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.13) 0 3px, transparent 3px 6px),
    var(--cc, var(--cinnabar));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 50% calc(100% - 8px), 0 100%);
  cursor: pointer; border: 0; padding: 0;
  transition: width 0.35s var(--ease-out), filter 0.2s;
}
.rail-ribbon .fill {
  position: absolute; left: 0; top: 0; width: 100%; height: calc(var(--p, 0) * 100%);
  background: rgba(20, 12, 6, 0.34);
  clip-path: inherit;
  transition: height 0.15s linear;
}
.theme-dark .rail-ribbon .fill { background: rgba(250, 240, 220, 0.28); }
.rail-ribbon:hover { width: 30px; filter: brightness(1.1); }
.rail-ribbon.on { width: 32px; box-shadow: -2px 2px 8px rgba(60, 48, 28, 0.35); }
.rail-ribbon .tip {
  position: absolute; right: 40px; top: 50%; transform: translateY(-50%);
  white-space: nowrap; font-size: 12.5px; letter-spacing: 1px;
  background: var(--ink); color: var(--paper);
  padding: 5px 12px; border-radius: 6px;
  opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.rail-ribbon:hover .tip, .rail-ribbon.on .tip { opacity: 1; }
.rail-mark {
  position: absolute; right: -46px; top: var(--top);
  width: 24px; height: 34px; border-radius: 7px 7px 9px 9px;
  background: var(--jade);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.25), 0 3px 8px rgba(60, 48, 28, 0.35);
  transform: translateY(-17px);
  transition: top 0.18s linear;
  pointer-events: none;
}
.rail-mark::before { content: "读"; position: absolute; inset: 0; display: grid; place-items: center; font-size: 13px; color: #f3efe2; }
.rail-scale { position: absolute; right: 34px; top: 0; height: 100%; font-family: var(--font-mono); font-size: 10px; color: var(--ink-3); }

@media (max-width: 900px) {
  .reader-layout { display: flex; flex-direction: column; }
  .rail {
    order: -1;
    position: sticky; top: var(--nav-h); right: auto; transform: none;
    height: 44px; width: auto; margin: 0; z-index: 30;
    justify-content: stretch;
    background: color-mix(in srgb, var(--paper) 94%, transparent);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--hairline);
    padding: 0 16px; align-items: flex-end;
  }
  .rail-track { flex: 1; height: 16px; width: auto; margin: 0 0 6px; background: var(--paper-3); }
  .rail-ribbon {
    right: auto; top: auto; bottom: 0; height: 16px; width: var(--hh);
    left: var(--top); border-radius: 3px 3px 0 0;
    clip-path: polygon(0 0, 100% 0, 100% 100%, calc(100% - 7px) 50%, 100% 0, 0 100%);
  }
  .rail-ribbon .tip { display: none; }
  .rail-mark {
    right: auto; top: auto; bottom: 2px; left: var(--top);
    width: 16px; height: 24px; border-radius: 4px 4px 6px 6px;
    transform: translateX(-8px);
  }
  .rail-mark::before { font-size: 10px; }
  .reader-main { padding-top: 24px; }
  .nav { gap: 10px; padding: 0 14px; }
  .nav-brand b { font-size: 17px; letter-spacing: 1px; white-space: nowrap; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 7px 9px; font-size: 13px; white-space: nowrap; }
}

/* ── 索引卡片视图 ─────────────────────── */
.idx-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 26px; flex-wrap: wrap; }
.idx-head h1 { font-size: clamp(30px, 4vw, 44px); font-weight: 700; letter-spacing: 0.05em; }
.idx-head p { font-family: var(--font-kai); color: var(--ink-3); font-size: 15px; }
.idx-types { display: flex; gap: 8px; margin-bottom: 18px; }
.idx-types button {
  font-size: 14px; letter-spacing: 2px; padding: 8px 20px; border-radius: 999px;
  border: 1px solid var(--hairline); background: var(--card); color: var(--ink-2);
  transition: all 0.2s;
}
.idx-types button.on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.idx-chips {
  position: sticky; top: var(--nav-h); z-index: 20;
  display: flex; gap: 8px; overflow-x: auto; padding: 12px 2px;
  background: color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter: blur(8px);
  scrollbar-width: none;
}
.idx-chips::-webkit-scrollbar { display: none; }
.idx-chips .chip { flex: none; }
.idx-chips .chip.on { border-color: var(--cc); color: var(--ink); background: color-mix(in srgb, var(--cc) 12%, var(--card)); }

.idx-cols {
  display: flex; gap: 26px; overflow-x: auto; align-items: flex-start;
  padding: 26px 2px 30px; scroll-snap-type: x proximity; scrollbar-width: thin;
}
.idx-col { flex: 0 0 320px; scroll-snap-align: start; }
.idx-col.dim { opacity: 0.35; filter: saturate(0.6); }
.idx-col-head { margin-bottom: 16px; }
.idx-col-head .nm { font-size: 21px; font-weight: 700; letter-spacing: 0.04em; }
.idx-col-head .nm::before { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 50%; background: var(--cc); margin-right: 10px; }
.idx-col-head .rl { font-family: var(--font-kai); font-size: 13.5px; color: var(--ink-3); margin-top: 4px; }

.pcard {
  background: var(--card); border-radius: 10px;
  box-shadow: var(--shadow-card);
  padding: 18px 20px 14px; margin-bottom: 16px;
  border-top: 3px solid var(--cc, var(--cinnabar));
  transform: rotate(var(--tilt, -0.4deg));
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s;
}
.pcard:nth-child(even) { --tilt: 0.5deg; }
.pcard:hover { transform: rotate(0deg) translateY(-3px); box-shadow: var(--shadow-float); }
.pcard .pcard-body { font-family: var(--font-kai); font-size: 15.5px; line-height: 1.95; color: var(--ink); }
.pcard .pcard-go {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 10px;
  font-size: 12.5px; letter-spacing: 1px; color: var(--ink-3);
}
.pcard .pcard-go:hover { color: var(--cc, var(--cinnabar)); }

.profile {
  background: color-mix(in srgb, var(--cc) 7%, var(--card));
  border-radius: 10px; padding: 18px 20px; margin-bottom: 18px;
  border-top: 3px solid var(--cc);
}
.profile .role { font-size: 12.5px; letter-spacing: 1px; color: var(--cc); margin-bottom: 8px; }
.profile .bio { font-size: 14.5px; line-height: 1.95; color: var(--ink-2); }

/* ── 在场网格 ─────────────────────────── */
.grid-panel { margin-top: 40px; }
.grid-panel h2 { font-size: 21px; font-weight: 700; letter-spacing: 0.06em; margin-bottom: 6px; }
.grid-panel .sub { font-family: var(--font-kai); font-size: 13.5px; color: var(--ink-3); margin-bottom: 18px; }
.pgrid { display: grid; gap: 7px 4px; align-items: center; min-width: 640px; }
.pgrid-cell { font-size: 12.5px; color: var(--ink-2); white-space: nowrap; padding-right: 10px; }
.pgrid-head { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); text-align: center; }
.pgrid-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--cc); opacity: 0.9; justify-self: center; transition: transform 0.2s; }
.pgrid-dot:hover { transform: scale(1.5); }
.pgrid-hollow { width: 11px; height: 11px; border-radius: 50%; border: 1px dashed var(--hairline); justify-self: center; opacity: 0.6; }
.grid-scroll { overflow-x: auto; padding-bottom: 8px; }

/* ── 年表 ─────────────────────────────── */
.tl { position: relative; max-width: 720px; margin: 0 auto; padding: 30px 0 80px; }
.tl::before { content: ""; position: absolute; left: 86px; top: 40px; bottom: 60px; width: 1px; background: var(--hairline); }
.tl-item { position: relative; display: grid; grid-template-columns: 70px 1fr; gap: 34px; padding: 20px 0; }
.tl-year { font-family: var(--font-mono); font-size: 17px; color: var(--cinnabar); text-align: right; line-height: 1.5; }
.tl-dot { position: absolute; left: 86px; top: 30px; width: 9px; height: 9px; border-radius: 50%; background: var(--cinnabar); transform: translateX(-4px); box-shadow: 0 0 0 4px color-mix(in srgb, var(--cinnabar) 18%, transparent); }
.tl-body { font-size: 15.5px; line-height: 1.95; color: var(--ink-2); }
.tl-body a.chip { margin-top: 8px; }

/* ── 页脚 ─────────────────────────────── */
footer {
  border-top: 1px solid var(--hairline);
  padding: 34px clamp(20px, 4vw, 48px) 44px;
  display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between;
  color: var(--ink-3); font-size: 13px;
}
footer .fam { display: flex; gap: 18px; }
footer .fam a:hover { color: var(--cinnabar); }

/* ── 视图切换动效 ─────────────────────── */
.view { animation: viewin 0.5s var(--ease-out); }
@keyframes viewin { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* ── 响应式 ───────────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .stage { min-height: 420px; order: -1; }
  .nav-links a { padding: 7px 10px; font-size: 13.5px; }
  .nav-brand span { display: none; }
}