/* ============================================================
   李静训和她的时代 · 可视化网站
   设计语言：宣纸 / 墨 / 朱砂 / 青绿  ·  编辑式排版  ·  低密度留白
   参考 taste-skill：反模板、禁装饰条带、禁药丸标签、克制动效
   ============================================================ */

:root {
  /* 色彩系统 —— 宣纸底 + 墨色 + 朱砂点缀 + 青绿（玻璃器） */
  --paper: #f2ecdf;
  --paper-deep: #e9e1cd;
  --paper-wash: #f7f2e7;
  --ink: #211a13;
  --ink-soft: #5b5342;
  --ink-faint: #8d8572;
  --cinnabar: #a23f2a;
  --cinnabar-soft: rgba(162, 63, 42, .12);
  --celadon: #3b6155;
  --celadon-soft: rgba(59, 97, 85, .12);
  --line: rgba(33, 26, 19, .16);
  --line-soft: rgba(33, 26, 19, .08);

  /* 字体 */
  --serif: "Songti SC", "Noto Serif SC", "STSong", "SimSun", serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", var(--serif);
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;

  /* 版心与节奏 */
  --measure: 68ch;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --sp-1: .5rem; --sp-2: 1rem; --sp-3: 1.75rem; --sp-4: 3rem;
  --sp-5: 5rem; --sp-6: 8rem;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

[data-theme="dark"] {
  --paper: #17130d;
  --paper-deep: #1f1a12;
  --paper-wash: #141008;
  --ink: #e8e0cc;
  --ink-soft: #a79d86;
  --ink-faint: #746b58;
  --cinnabar: #c96a4e;
  --cinnabar-soft: rgba(201, 106, 78, .16);
  --celadon: #7fa396;
  --celadon-soft: rgba(127, 163, 150, .14);
  --line: rgba(232, 224, 204, .16);
  --line-soft: rgba(232, 224, 204, .08);
}

@media (prefers-reduced-motion: no-preference) {
  :root { --motion: 1; }
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .4s var(--ease), color .4s var(--ease);
  overflow-x: hidden;
}

::selection { background: var(--cinnabar-soft); }

img { display: block; max-width: 100%; height: auto; }

a { color: inherit; text-decoration: none; }

/* ---------------- 顶栏 ---------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 60;
  display: flex; align-items: center; justify-content: space-between;
  padding: .9rem var(--gutter);
  transition: background .35s var(--ease), box-shadow .35s var(--ease);
}
.site-header.scrolled {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--line-soft);
}
.brand { display: flex; align-items: baseline; gap: .6rem; }
.brand .name {
  font-size: 1.02rem; letter-spacing: .18em; font-weight: 700;
}
.brand .era { font-size: .72rem; color: var(--ink-faint); letter-spacing: .28em; font-family: var(--sans); }
.site-nav { display: flex; align-items: center; gap: 1.6rem; }
.site-nav a {
  font-family: var(--sans); font-size: .82rem; color: var(--ink-soft);
  letter-spacing: .12em; transition: color .25s;
}
.site-nav a:hover { color: var(--cinnabar); }
.theme-toggle {
  border: 1px solid var(--line); background: transparent; color: var(--ink-soft);
  font-family: var(--sans); font-size: .72rem; letter-spacing: .18em;
  padding: .35rem .8rem; border-radius: 2px; cursor: pointer;
  transition: border-color .25s, color .25s;
}
.theme-toggle:hover { border-color: var(--cinnabar); color: var(--cinnabar); }

/* ---------------- Hero ---------------- */
.hero {
  position: relative;
  min-height: 100dvh;
  display: grid; grid-template-columns: 1.1fr .9fr;
  align-items: center; gap: var(--gutter);
  padding: 7rem var(--gutter) var(--sp-5);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(90rem 40rem at 80% -10%, var(--celadon-soft), transparent 60%),
    radial-gradient(60rem 36rem at -10% 110%, var(--cinnabar-soft), transparent 55%);
  pointer-events: none;
}
.hero-kicker {
  font-family: var(--kai); font-size: 1.05rem; color: var(--cinnabar);
  letter-spacing: .4em; margin-bottom: var(--sp-3);
}
.hero h1 {
  font-size: clamp(2.6rem, 7.2vw, 5.6rem);
  line-height: 1.12; letter-spacing: .06em; font-weight: 700;
  margin-bottom: var(--sp-3);
}
.hero h1 .thin { font-weight: 400; }
.hero-verse {
  font-family: var(--kai); font-size: 1.15rem; color: var(--ink-soft);
  border-left: 2px solid var(--cinnabar); padding-left: 1.1rem;
  max-width: 34ch; line-height: 2; margin-bottom: var(--sp-4);
}
.hero-lede {
  font-size: 1.02rem; color: var(--ink-soft);
  max-width: 46ch; margin-bottom: var(--sp-4); line-height: 2;
}
.hero-stats {
  display: grid; grid-template-columns: repeat(4, auto);
  gap: 2.2rem; justify-content: start; align-items: end;
}
.stat .num {
  font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 700; line-height: 1;
  letter-spacing: .02em; display: block; margin-bottom: .4rem;
}
.stat .lbl { font-family: var(--sans); font-size: .72rem; color: var(--ink-faint); letter-spacing: .16em; }
.stat .num .unit { font-size: .55em; color: var(--ink-faint); margin-left: .15em; }

.hero-figure { position: relative; }
.hero-figure .frame {
  position: relative; overflow: hidden;
  border: 1px solid var(--line);
}
.hero-figure img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.2s var(--ease); }
.hero-figure:hover img { transform: scale(1.025); }
.hero-figure figcaption {
  margin-top: .8rem; font-family: var(--sans); font-size: .72rem;
  color: var(--ink-faint); letter-spacing: .14em; line-height: 1.7;
}

/* ---------------- 通用排版 ---------------- */
.wrap { max-width: 1200px; margin: 0 auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.section { padding-top: var(--sp-6); padding-bottom: var(--sp-6); }
.section-head { max-width: var(--measure); margin-bottom: var(--sp-5); }
.section-head .no {
  font-family: var(--sans); font-size: .78rem; letter-spacing: .34em;
  color: var(--ink-faint); display: block; margin-bottom: var(--sp-2);
}
.section-head h2 {
  font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.25; letter-spacing: .05em;
  font-weight: 700;
}
.section-head h2 em { font-style: normal; color: var(--cinnabar); }
.section-head .sub {
  margin-top: var(--sp-2); color: var(--ink-soft); font-size: 1rem;
  max-width: 52ch;
}

.lede-block {
  font-family: var(--kai); font-size: clamp(1.12rem, 1.8vw, 1.35rem);
  color: var(--ink); line-height: 2.1; max-width: var(--measure);
  padding: var(--sp-4) var(--sp-4);
  border-left: 2px solid var(--cinnabar);
  background: linear-gradient(90deg, var(--cinnabar-soft), transparent 70%);
  margin-bottom: var(--sp-4);
}
.lede-block .src { display: block; margin-top: var(--sp-2); font-family: var(--sans); font-size: .74rem; color: var(--ink-faint); letter-spacing: .16em; }

/* ---------------- 信息表 ---------------- */
.info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.info-cell { background: var(--paper); padding: 1.3rem 1.6rem; }
.info-cell .k { font-family: var(--sans); font-size: .72rem; color: var(--ink-faint); letter-spacing: .22em; margin-bottom: .5rem; }
.info-cell .v { font-size: 1.02rem; line-height: 1.7; }
.info-cell .v em { font-style: normal; color: var(--cinnabar); font-weight: 700; }

/* ---------------- 四篇章 ---------------- */
.chapter { position: relative; padding: var(--sp-5) 0; border-top: 1px solid var(--line-soft); }
.chapter:first-of-type { border-top: none; }
.chapter-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-5);
  align-items: center;
}
.chapter-grid.rev .chapter-text { order: 2; }
.chapter-grid.rev .chapter-fig { order: 1; }
.chapter-no {
  font-family: var(--serif); font-size: clamp(3.4rem, 7vw, 5.2rem);
  font-weight: 700; color: transparent;
  -webkit-text-stroke: 1px var(--cinnabar);
  line-height: 1; display: block; margin-bottom: var(--sp-2);
}
.chapter-title { font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: .1em; margin-bottom: .4rem; font-weight: 700; }
.chapter-en { font-family: var(--sans); font-size: .76rem; color: var(--ink-faint); letter-spacing: .3em; margin-bottom: var(--sp-3); }
.chapter-verse {
  font-family: var(--kai); font-size: 1.08rem; color: var(--ink-soft);
  border-left: 2px solid var(--celadon); padding-left: 1rem;
  line-height: 2; margin-bottom: var(--sp-3); max-width: 46ch;
}
.chapter-points { list-style: none; }
.chapter-points li {
  padding: .55rem 0 .55rem 1.2rem; position: relative;
  font-size: .98rem; color: var(--ink-soft); line-height: 1.8;
  border-bottom: 1px dashed var(--line-soft);
}
.chapter-points li:last-child { border-bottom: none; }
.chapter-points li::before {
  content: ""; position: absolute; left: 0; top: 1.15rem;
  width: .42rem; height: .42rem; background: var(--celadon); opacity: .7;
}
.chapter-points li strong { color: var(--ink); font-weight: 600; }
.chapter-fig figure { border: 1px solid var(--line); overflow: hidden; }
.chapter-fig img { width: 100%; height: 100%; object-fit: cover; transition: transform 1.1s var(--ease); }
.chapter-fig figure:hover img { transform: scale(1.03); }
.chapter-fig figcaption { padding: .8rem 0 0; font-family: var(--sans); font-size: .72rem; color: var(--ink-faint); letter-spacing: .12em; line-height: 1.7; }

/* ---------------- 文物网格（混合尺寸 Bento） ---------------- */
.art-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.art-card {
  position: relative; background: var(--paper-wash);
  cursor: pointer; overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), z-index .4s;
}
.art-card:hover { transform: translateY(-3px); box-shadow: 0 22px 44px -22px rgba(33,26,19,.42); z-index: 2; }
.art-card .th { overflow: hidden; background: var(--paper-deep); height: 100%; }
.art-card .th img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s var(--ease); }
.art-card:hover .th img { transform: scale(1.05); }
.art-card .meta {
  position: absolute; inset: auto 0 0 0; padding: 1rem 1.15rem .9rem;
  background: linear-gradient(transparent, rgba(20,15,8,.78));
  color: #f3ecdc;
}
.art-card .meta .t { font-size: 1rem; font-weight: 600; letter-spacing: .04em; }
.art-card .meta .d { font-family: var(--sans); font-size: .68rem; color: rgba(243,236,220,.78); margin-top: .25rem; letter-spacing: .12em; }
/* 尺寸：金项链跨 7 列、石棺原物跨 5 列领衔，墓志拓片与墓志实物跨 6 列次之，其余均分小格 */
.art-lg { grid-column: span 7; grid-row: span 2; min-height: 420px; }
.art-md { grid-column: span 5; grid-row: span 2; min-height: 420px; }
.art-wide { grid-column: span 6; grid-row: span 2; min-height: 400px; }
.art-sm { grid-column: span 4; min-height: 240px; }
.art-sm .meta { padding: .85rem 1rem .75rem; }
.art-sm .meta .t { font-size: .95rem; }

/* ---------------- 现场图集（来源分组 + 错落石墙） ---------------- */
.g-group { margin-bottom: var(--sp-5); }
.g-head {
  display: flex; align-items: baseline; gap: 1rem;
  margin-bottom: var(--sp-3); padding-bottom: .6rem;
  border-bottom: 1px solid var(--line);
}
.g-head .src { font-size: 1.25rem; font-weight: 700; letter-spacing: .12em; }
.g-head .cnt { font-family: var(--sans); font-size: .76rem; color: var(--ink-faint); letter-spacing: .18em; }
.g-masonry { columns: 3; column-gap: 2px; }
.g-masonry figure {
  position: relative; overflow: hidden; cursor: zoom-in;
  break-inside: avoid; margin: 0 0 2px;
  background: var(--paper-deep);
}
.g-masonry figure img { width: 100%; display: block; transition: transform .8s var(--ease); }
.g-masonry figure:hover img { transform: scale(1.045); }
.g-masonry figcaption {
  position: absolute; inset: auto 0 0 0; padding: .7rem 1rem;
  background: linear-gradient(transparent, rgba(20,15,8,.74));
  color: #f3ecdc; font-family: var(--sans); font-size: .72rem; letter-spacing: .1em;
  opacity: 0; transition: opacity .35s;
}
.g-masonry figure:hover figcaption { opacity: 1; }

/* ---------------- 资料库（全文阅读） ---------------- */
.arc-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); align-items: start; }
.arc-group { border-top: 1px solid var(--line); padding-top: 1.1rem; }
.arc-head { display: flex; align-items: baseline; gap: 1rem; margin-bottom: .9rem; }
.arc-head .cat { font-size: 1.1rem; font-weight: 700; letter-spacing: .1em; }
.arc-head .n { font-family: var(--sans); font-size: .72rem; color: var(--ink-faint); letter-spacing: .14em; }
.arc-list { list-style: none; }
.arc-item { display: flex; align-items: baseline; gap: .9rem; padding: .55rem 0; border-bottom: 1px dashed var(--line-soft); }
.arc-item a { font-size: .93rem; color: var(--ink-soft); line-height: 1.5; transition: color .25s; }
.arc-item a:hover { color: var(--cinnabar); text-decoration: none; }
.arc-item .tag { font-family: var(--sans); font-size: .66rem; color: var(--ink-faint); letter-spacing: .14em; flex-shrink: 0; width: 2.2rem; }

/* ---------------- Lightbox / Modal ---------------- */
.overlay {
  position: fixed; inset: 0; z-index: 90; display: none;
  align-items: center; justify-content: center; padding: 4vw;
  background: rgba(15, 11, 6, .88);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.overlay.open { display: flex; }
.overlay .box { max-width: 1100px; width: 100%; max-height: 88vh; display: grid; grid-template-columns: 1.2fr 1fr; overflow: hidden; background: var(--paper); color: var(--ink); }
.overlay .box .img { overflow: hidden; background: var(--paper-deep); display: flex; align-items: center; justify-content: center; }
.overlay .box .img img { width: 100%; height: 100%; object-fit: contain; max-height: 88vh; }
.overlay .box .txt { padding: 2.4rem 2.2rem; overflow-y: auto; }
.overlay .box .txt h3 { font-size: 1.5rem; letter-spacing: .06em; margin-bottom: .6rem; }
.overlay .box .txt .tag { font-family: var(--sans); font-size: .72rem; color: var(--cinnabar); letter-spacing: .2em; margin-bottom: 1.1rem; display: block; }
.overlay .box .txt p { color: var(--ink-soft); font-size: .98rem; line-height: 2; }
.overlay .close {
  position: absolute; top: 1.2rem; right: 1.6rem; z-index: 5;
  background: none; border: 1px solid rgba(243,236,220,.5); color: #f3ecdc;
  font-family: var(--sans); font-size: .8rem; letter-spacing: .2em; padding: .4rem 1rem; cursor: pointer;
}
.overlay .close:hover { border-color: #fff; }

/* ---------------- 家族谱系 ---------------- */
.genealogy { border: 1px solid var(--line); background: var(--paper-wash); padding: var(--sp-4); overflow-x: auto; }
.gen-tree { display: flex; flex-direction: column; gap: var(--sp-2); min-width: 640px; }
.gen-row { display: flex; align-items: center; gap: var(--sp-2); }
.gen-row .tag {
  font-family: var(--sans); font-size: .68rem; letter-spacing: .2em; color: var(--ink-faint);
  width: 6.5rem; flex-shrink: 0; text-align: right;
}
.gen-node {
  padding: .7rem 1.2rem; border: 1px solid var(--line);
  background: var(--paper); font-size: .95rem; white-space: nowrap;
}
.gen-node .r { font-family: var(--sans); font-size: .68rem; color: var(--ink-faint); letter-spacing: .14em; display: block; margin-top: .2rem; }
.gen-node.hl { border-color: var(--cinnabar); background: var(--cinnabar-soft); }
.gen-node.hl .r { color: var(--cinnabar); }
.gen-marriage { display: flex; align-items: center; gap: .6rem; color: var(--ink-faint); font-family: var(--sans); font-size: .72rem; letter-spacing: .2em; }
.gen-marriage .link { color: var(--celadon); }

/* ---------------- 文献与资料 ---------------- */
.doc-list { list-style: none; border-top: 1px solid var(--line); }
.doc-list li { display: flex; align-items: baseline; gap: 1.2rem; padding: .9rem 0; border-bottom: 1px solid var(--line-soft); }
.doc-list .code { font-family: var(--sans); font-size: .72rem; color: var(--cinnabar); letter-spacing: .12em; flex-shrink: 0; width: 3.4rem; }
.doc-list .t { font-size: .98rem; }
.doc-list .s { font-family: var(--sans); font-size: .74rem; color: var(--ink-faint); margin-left: auto; text-align: right; flex-shrink: 0; }

.quote-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.quote-cell { background: var(--paper); padding: 1.8rem 1.8rem; }
.quote-cell .q { font-family: var(--kai); font-size: 1.05rem; line-height: 2.1; color: var(--ink); }
.quote-cell .a { font-family: var(--sans); font-size: .7rem; color: var(--ink-faint); letter-spacing: .18em; margin-top: .9rem; display: block; }

/* 精读系列入口卡片 */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; background: var(--line); border: 1px solid var(--line); }
.feat-card { display: block; background: var(--paper-wash); padding: 1.5rem 1.4rem 1.3rem; transition: background .3s, color .3s; }
.feat-card:hover { background: var(--cinnabar-soft); text-decoration: none; }
.feat-card .ft { font-family: var(--sans); font-size: .66rem; letter-spacing: .22em; color: var(--ink-faint); display: block; margin-bottom: .7rem; }
.feat-card .fn { font-size: 1.12rem; font-weight: 700; letter-spacing: .1em; color: var(--ink); line-height: 1.5; }
.feat-card .fd { font-family: var(--sans); font-size: .74rem; color: var(--ink-soft); line-height: 1.8; margin-top: .5rem; }
.feat-card:hover .fn { color: var(--cinnabar); }

/* 篇章 · 阅读全文链接 */
.chapter-read { display: inline-flex; align-items: baseline; gap: .5rem; margin-top: 1rem; font-family: var(--sans); font-size: .82rem; letter-spacing: .16em; color: var(--celadon); border-bottom: 1px solid rgba(59,97,85,.4); padding-bottom: .15rem; transition: color .25s, border-color .25s; }
.chapter-read:hover { color: var(--cinnabar); border-color: var(--cinnabar); text-decoration: none; }

/* ---------------- 页脚 ---------------- */
.site-footer { border-top: 1px solid var(--line); padding: var(--sp-5) var(--gutter) var(--sp-4); margin-top: var(--sp-6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--sp-4); max-width: 1200px; margin: 0 auto; }
.site-footer h4 { font-size: 1.05rem; letter-spacing: .12em; margin-bottom: var(--sp-2); }
.site-footer p, .site-footer li { color: var(--ink-soft); font-size: .86rem; line-height: 1.9; }
.site-footer ul { list-style: none; }
.site-footer a { color: var(--ink-soft); border-bottom: 1px solid var(--line); transition: color .25s, border-color .25s; }
.site-footer a:hover { color: var(--cinnabar); border-color: var(--cinnabar); }
.footer-note { text-align: center; font-family: var(--sans); font-size: .7rem; color: var(--ink-faint); letter-spacing: .18em; margin-top: var(--sp-4); }

/* ---------------- Reveal 动效 ---------------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------------- 响应式 ---------------- */
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding-top: 6rem; }
  .hero-figure { order: -1; max-width: 560px; }
  .chapter-grid { grid-template-columns: 1fr; gap: var(--sp-3); }
  .chapter-grid.rev .chapter-text { order: 1; }
  .chapter-grid.rev .chapter-fig { order: 2; }
  .art-lg { grid-column: span 6; grid-row: span 2; }
  .art-md { grid-column: span 6; grid-row: span 2; }
  .art-wide { grid-column: span 6; grid-row: span 2; }
  .art-sm { grid-column: span 6; }
  .g-masonry { columns: 2; }
  .arc-wrap { grid-template-columns: 1fr; }
  .quote-row { grid-template-columns: 1fr; }
  .overlay .box { grid-template-columns: 1fr; overflow-y: auto; max-height: 92vh; }
  .overlay .box .img img { max-height: 46vh; }
}
@media (max-width: 640px) {
  .art-lg, .art-md, .art-wide, .art-sm { grid-column: span 12; min-height: 220px; }
  .g-masonry { columns: 1; }
  .hero-stats { grid-template-columns: repeat(2, auto); gap: 1.4rem 2.4rem; }
  .info-grid { grid-template-columns: 1fr; }
  .site-nav a { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
}