/* ═══════════════════════════════════════════════════════
   郸客松 · 共创图景 · A《旧痕里，拓出下一步》
   35 岩刻拓印式档案 × 04 实验汉字：岩面、炭线与粗砺图形，
   同当代文字形成时间反差；大尺度留痕与档案版式。
   ═══════════════════════════════════════════════════════ */

:root {
  --rock: #d9cdb6;         /* 岩米 */
  --rock-deep: #c4b599;
  --char: #211c16;         /* 炭黑 */
  --char-2: #4a4237;
  --ochre: #9c5b33;        /* 赭 */
  --print-paper: #efe8d8;  /* 拓白 */
  --line: rgba(33, 28, 22, 0.28);
  --serif: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --mono: ui-monospace, "SF Mono", "Menlo", "Consolas", monospace;
  --wrap: min(980px, 90vw);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--rock); scroll-padding-top: 70px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  font-family: var(--sans);
  font-size: 16px; line-height: 2; color: var(--char);
  /* 岩面质感：多层噪点与微扰 */
  background:
    repeating-radial-gradient(circle at 18% 12%, rgba(156, 91, 51, 0.028) 0 2px, transparent 2px 9px),
    repeating-radial-gradient(circle at 82% 76%, rgba(33, 28, 22, 0.03) 0 2px, transparent 2px 11px),
    radial-gradient(ellipse at 50% 0%, rgba(239, 232, 216, 0.5), transparent 62%),
    var(--rock);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
::selection { background: var(--ochre); color: var(--print-paper); }
:focus-visible { outline: 2px dashed var(--ochre); outline-offset: 3px; }

.skip-link { position: fixed; top: -60px; left: 14px; z-index: 60; padding: 9px 16px; background: var(--char); color: var(--print-paper); font-size: 14px; text-decoration: none; }
.skip-link:focus { top: 12px; }

/* ---------- 档案页眉页脚 ---------- */
.slab-head { position: sticky; top: 0; z-index: 50; background: rgba(217, 205, 182, 0.93); backdrop-filter: blur(4px); border-bottom: 2px solid var(--char); }
.slab-inner { width: var(--wrap); margin-inline: auto; min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-block: 6px; }
.back-works { font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.08em; color: var(--char-2); text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 2px; }
.back-works:hover { color: var(--ochre); border-color: var(--ochre); }
.folio { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.24em; color: var(--ochre); }
.slab-foot { border-top: 2px solid var(--char); background: rgba(33, 28, 22, 0.06); }
.slab-foot span { display: block; width: var(--wrap); margin-inline: auto; padding-block: 12px 4px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em; color: var(--char-2); }
.slab-foot span + span { padding-top: 0; padding-bottom: 16px; }

/* ---------- 章节骨架 ---------- */
.act { width: var(--wrap); margin-inline: auto; padding-block: clamp(56px, 9vh, 110px) 0; }
.act:last-of-type { padding-bottom: clamp(64px, 10vh, 120px); }
.kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.3em; color: var(--ochre); margin-bottom: 14px; }
.sec-t { font-family: var(--serif); font-weight: 800; font-size: clamp(24px, 3.4vw, 38px); line-height: 1.5; letter-spacing: 0.03em; }

/* ---------- 一 · 来意（04 实验汉字标题） ---------- */
.carve-title {
  font-family: var(--serif); font-weight: 900;
  font-size: clamp(44px, 8.6vw, 120px);
  line-height: 1.18; letter-spacing: 0.02em;
  margin-block: 10px clamp(20px, 4vh, 40px);
  /* 拓印缺笔感：主体炭色 + 赭色断口阴影 */
  text-shadow: 0.045em 0.03em 0 rgba(156, 91, 51, 0.32);
}
.carve-title em {
  font-style: normal; color: var(--ochre);
  text-shadow: -0.04em -0.025em 0 rgba(33, 28, 22, 0.3);
}
.carve-title br { display: block; }
.mono-logue { font-family: var(--serif); font-size: clamp(17px, 1.6vw, 20px); line-height: 2.15; border-left: 5px solid var(--ochre); padding-left: 20px; }
.open-note { font-size: 14.5px; color: var(--char-2); align-self: center; border: 1px dashed var(--line); padding: 16px 18px; background: rgba(239, 232, 216, 0.5); }

/* ---------- 二 · 事实卡 ---------- */
.facts { list-style: none; margin-top: 8px; }
.facts li { display: flex; gap: 18px; align-items: flex-start; padding: 18px 4px; border-top: 1px solid var(--line); }
.facts li:last-child { border-bottom: 1px solid var(--line); }
.f-no { flex: none; font-family: var(--mono); font-size: 12px; letter-spacing: 0.2em; color: var(--print-paper); background: var(--ochre); padding: 4px 10px; margin-top: 5px; }
.facts p { font-size: 16px; max-width: 40em; }
.facts-note { margin-top: 16px; font-size: 14px; color: var(--char-2); max-width: 46em; }
.facts-note::before { content: "◆ "; color: var(--ochre); font-size: 9px; }

/* ---------- 三 · 拓印场景 ---------- */
.rub-lead { margin-top: 12px; font-size: 15px; color: var(--char-2); max-width: 42em; }
.rub-stage { margin-top: clamp(22px, 4vh, 40px); }

/* 静态两态版（无 JS 默认呈现 / 搜索可读） */
.dual-card { border: 1.5px solid var(--char); background: rgba(239, 232, 216, 0.42); padding: clamp(14px, 2.4vw, 24px); }
.dual-card + .dual-card { margin-top: 20px; }
.dual-card figcaption { font-family: var(--mono); font-size: 12px; letter-spacing: 0.18em; color: var(--ochre); margin-bottom: 14px; }
.dual-pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
.dual-state { border: 1px solid var(--line); padding: 10px; }
.state-tag { display: inline-block; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.2em; color: var(--char-2); margin-bottom: 8px; }
.dual-state svg { display: block; width: 100%; height: auto; }
.rock { fill: var(--rock-deep); stroke: var(--char); stroke-width: 1.5; }
.paper { fill: var(--print-paper); stroke: var(--char); stroke-width: 1.5; }
.carve { fill: none; stroke: var(--rock); stroke-width: 9; stroke-linecap: round; opacity: 0.5; }
.print { fill: none; stroke: var(--char); stroke-width: 7; stroke-linecap: round; }
.carve-txt { font-family: var(--serif); font-size: 26px; fill: var(--char); letter-spacing: 6px; text-anchor: middle; }
.dual-q { margin-top: 10px; font-size: 14.5px; color: var(--char-2); line-height: 1.9; }
.static-explain { margin-top: 18px; font-size: 14px; color: var(--char-2); max-width: 52em; }

/* JS 增强版拓印场景 */
.rub-live { margin-top: 4px; }
.live-wrap {
  position: relative; width: 100%; aspect-ratio: 15 / 7;
  border: 3px solid var(--char);
  background: var(--rock-deep);
  overflow: hidden;
  box-shadow: 7px 7px 0 rgba(33, 28, 22, 0.16);   /* 舞台为画面主角 */
  touch-action: none; /* 拖动拓印优先，页面滚动用场景外区域 */
}
.hist-layer { position: absolute; inset: 0; width: 100%; height: 100%; }
.h-rock { fill: var(--rock-deep); }
.zone-hit { fill: transparent; stroke: rgba(33, 28, 22, 0.22); stroke-width: 1.5; stroke-dasharray: 7 9; }
.h-carve { fill: none; stroke: var(--char); stroke-width: 9; stroke-linecap: round; } /* 保留粗岩刻线，略收以免吞没颈口/袖口 */
.h-name { font-family: var(--serif); font-size: 44px; font-weight: 800; fill: var(--char); letter-spacing: 10px; text-anchor: middle; }
.h-sub { font-family: var(--mono); font-size: 15px; fill: var(--ochre); letter-spacing: 8px; text-anchor: middle; }
#veil { position: absolute; inset: 0; width: 100%; height: 100%; cursor: crosshair; }
.today-layer {
  margin: 14px auto 0; max-width: 620px;                     /* 岩面下方文档流：图形与文字各有完整区域 */
  visibility: hidden;                                  /* 默认不露句；首次显影由 .is-show 显示（逻辑不变） */
  display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 10px;
  background: rgba(239, 232, 216, 0.94);
  border: 1.5px solid var(--char);
  padding: 18px 22px;
  text-align: center;
  pointer-events: none;
}
.t-sketch-note { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.3em; color: var(--ochre); }
.t-q {
  font-family: var(--serif); font-weight: 700;
  font-size: clamp(18px, 2.6vw, 30px); line-height: 1.8; letter-spacing: 0.04em;
  color: var(--char); opacity: 0; transition: opacity 0.7s ease;
  max-width: 26em;
}
.today-layer.is-show { visibility: visible; }
.today-layer:not(.is-show) { display: none; }  /* 未拓时不占位，岩面下方无空块 */
.t-q.is-on { opacity: 1; }
.t-q.is-dim { opacity: 0.34; }
.t-doodle { width: min(320px, 72%); height: auto; opacity: 0.8; }
.d-line { fill: none; stroke: var(--char-2); stroke-width: 2.5; stroke-dasharray: 6 7; stroke-linecap: round; }
.d-mark { stroke: var(--ochre); stroke-width: 2.5; stroke-linecap: round; }
.hist-layer { z-index: 1; }
#veil { z-index: 3; }
.rub-read {
  margin-top: 14px; font-family: var(--mono); font-size: 14px; letter-spacing: 0.06em;
  color: var(--char); min-height: 1.9em;
  border-left: 4px solid var(--ochre); padding-left: 14px;
}
.rub-actions { margin-top: 12px; display: flex; gap: 14px; flex-wrap: wrap; }
.rub-actions button {
  font-family: var(--mono); font-size: 13.5px; letter-spacing: 0.14em;
  color: var(--print-paper); background: var(--char);
  border: 1.5px solid var(--char); padding: 10px 22px; cursor: pointer;
}
.rub-actions button:hover { background: var(--ochre); border-color: var(--ochre); }
.rub-actions button:focus-visible { outline: 2px dashed var(--ochre); outline-offset: 3px; }
.rub-kbd { margin-top: 10px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; color: var(--char-2); }
.zone-a:focus-within, .zone-b:focus-within { outline: none; }
.zone-a:focus-within .zone-hit, .zone-b:focus-within .zone-hit { stroke: var(--ochre); stroke-dasharray: none; }

/* ---------- 四 · 对照卡 ---------- */
.act-contrast .contrast-grid { margin-top: 10px; display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); gap: clamp(16px, 3vw, 40px); align-items: center; }
.ct-cell { border: 1.5px solid var(--char); padding: clamp(18px, 3vw, 30px); background: rgba(239, 232, 216, 0.45); }
.ct-hist { transform: rotate(-0.6deg); }
.ct-now { transform: rotate(0.6deg); background: rgba(156, 91, 51, 0.1); }
.ct-tag { font-family: var(--mono); font-size: 12px; letter-spacing: 0.26em; color: var(--ochre); margin-bottom: 10px; }
.ct-cell p:not(.ct-tag) { font-size: 15.5px; line-height: 2.05; }
.ct-link { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.link-rod { width: 2px; height: 44px; background: var(--char); }
.link-seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; background: var(--ochre); color: var(--print-paper);
  font-family: var(--serif); font-size: 15px; letter-spacing: 2px; border-radius: 3px;
  box-shadow: inset 0 0 0 1px rgba(239, 232, 216, 0.35);
  writing-mode: vertical-rl;
}
.ct-twist { margin-top: clamp(22px, 4vh, 36px); font-family: var(--serif); font-size: clamp(17px, 1.7vw, 21px); line-height: 2.1; max-width: 40em; border-top: 2px solid var(--char); padding-top: 22px; }
.ct-twist strong { color: var(--ochre); }

/* ---------- 五 · 收束 ---------- */
.close-copy { margin-top: 10px; font-size: 16.5px; max-width: 42em; }
.close-note { margin-top: 16px; font-size: 14px; color: var(--char-2); max-width: 46em; }
.close-note::before { content: "◆ "; color: var(--ochre); font-size: 9px; }
.back-works-2 {
  display: inline-block; margin-top: 26px;
  font-family: var(--mono); font-size: 14px; letter-spacing: 0.1em;
  color: var(--print-paper); background: var(--char); text-decoration: none;
  padding: 13px 26px; box-shadow: 4px 4px 0 rgba(156, 91, 51, 0.55);
}
.back-works-2:hover { background: var(--ochre); }

/* ---------- 减少动态（内容原则：保留操作与结果，瞬时呈现） ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .t-q { transition: none; }
  .ct-hist, .ct-now { transform: none; }
}

/* ---------- 手机 ---------- */
@media (max-width: 760px) {
  .open-cols, .dual-pair { grid-template-columns: 1fr; gap: 16px; }
  .dual-pair { gap: 12px; }
  .facts li { flex-direction: column; gap: 8px; }
  .live-wrap { aspect-ratio: 4 / 3; }
  .h-name { font-size: 30px; letter-spacing: 6px; }
  .h-sub { font-size: 11px; letter-spacing: 5px; }
  .t-q { font-size: 17px; }
  .act-contrast .contrast-grid { grid-template-columns: 1fr; }
  .ct-link { flex-direction: row; }
  .link-rod { height: 2px; width: 44px; }
  .carve-title br { display: none; }
}