/* ============================================================
   三星堆风格 S&OP 演示 · 感知驱动全流程验证
   令牌：style-contract.json（inferred：玄黑展厅 / 青铜绿锈 / 鎏金 /
   象牙白 / 朱砂；衬线 display 字体 DNA；展签方角）
   构图来源：展陈与考古空间结构（展柜/展签/坑位平面/修复台/结语墙）
   ============================================================ */

:root {
  --obsidian: #16130e;
  --hall: #201a12;
  --panel: #262017;
  --panel2: #2d2619;
  --patina: #4a7a6a;
  --patina-bright: #6fa08d;
  --gold: #c9a227;
  --gold-bright: #e3c35c;
  --ivory: #ede3ce;
  --ivory-dim: #c3b79c;
  --earth: #8b6f47;
  --cinnabar: #b0402e;
  --hairline: rgba(201, 162, 39, 0.28);

  --serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
  --sans: -apple-system, system-ui, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;

  --t-display: clamp(52px, 4.5vw, 86px);
  --t-title: clamp(40px, 3.35vw, 64px);
  --t-sub: clamp(26px, 1.8vw, 34px);
  --t-body-lg: clamp(24px, 1.6vw, 31px);
  --t-body: clamp(22px, 1.45vw, 28px);
  --t-note: clamp(18px, 1.15vw, 22px);
  --t-meta: clamp(15px, 0.95vw, 18px);

  --pad-x: clamp(48px, 4.6vw, 88px);
  --pad-y: clamp(36px, 4.2vh, 56px);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--obsidian);
  color: var(--ivory);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.deck { position: fixed; inset: 0; overflow: hidden; }

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 360ms ease;
  background:
    radial-gradient(ellipse 90% 70% at 50% 0%, var(--hall) 0%, var(--obsidian) 68%);
  overflow: hidden;
}

.slide.is-active { opacity: 1; visibility: visible; }

@media (prefers-reduced-motion: reduce) {
  .slide, .notes-panel { transition: none !important; }
}

.slide-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: clamp(88px, 10vh, 112px) var(--pad-x) clamp(60px, 6.8vh, 76px);
}

.slide-cover .slide-content { padding-top: var(--pad-y); }
body[data-current="p1"] .brand-pill { display: none; }

/* ---------- 全局章记与控制 ---------- */

.brand-pill {
  position: fixed;
  top: clamp(20px, 2.6vh, 32px);
  left: clamp(24px, 2vw, 40px);
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--gold);
  outline: 1px solid rgba(201, 162, 39, 0.35);
  outline-offset: 3px;
  color: var(--gold-bright);
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(16px, 1.1vw, 21px);
  letter-spacing: 0.18em;
  padding: 0.4em 0.75em 0.4em 0.92em;
  background: rgba(201, 162, 39, 0.08);
}

.brand-tail { font-size: var(--t-meta); color: var(--ivory-dim); font-weight: 500; letter-spacing: 0.08em; }

.deck-controls {
  position: fixed;
  left: clamp(24px, 2vw, 40px);
  bottom: clamp(20px, 3vh, 32px);
  z-index: 40;
  display: flex;
  gap: 10px;
}

.deck-controls button {
  width: 46px;
  height: 46px;
  border: 1px solid var(--hairline);
  border-radius: 4px;
  background: rgba(38, 32, 23, 0.85);
  color: var(--ivory-dim);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.deck-controls button:hover { color: var(--gold-bright); border-color: var(--gold); }
.deck-controls button:disabled { opacity: 0.35; cursor: default; }
.deck-controls svg { width: 20px; height: 20px; }

.slide-counter {
  position: fixed;
  right: clamp(24px, 2vw, 40px);
  bottom: clamp(24px, 3.2vh, 36px);
  z-index: 40;
  font-family: var(--serif);
  font-size: clamp(16px, 1.1vw, 20px);
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.14em;
  font-variant-numeric: tabular-nums;
}

/* ---------- 讲稿面板 ---------- */

.notes-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: min(520px, 44vw);
  background: var(--panel);
  border-left: 1px solid var(--hairline);
  box-shadow: -18px 0 48px rgba(0, 0, 0, 0.5);
  transform: translateX(105%);
  transition: transform 280ms ease;
  z-index: 60;
  display: flex;
  flex-direction: column;
  padding: 40px 44px;
}

.notes-panel.is-open { transform: translateX(0); }
.notes-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.notes-title { font-family: var(--serif); font-size: 20px; font-weight: 700; color: var(--ivory); }
.notes-title em { font-style: normal; color: var(--gold-bright); }
.notes-close {
  border: 1px solid var(--hairline);
  background: rgba(201, 162, 39, 0.1);
  color: var(--gold-bright);
  width: 40px; height: 40px;
  border-radius: 4px;
  font-size: 18px;
  cursor: pointer;
}
.notes-copy { overflow: auto; font-size: 19px; line-height: 1.9; color: var(--ivory-dim); white-space: pre-wrap; }

/* ---------- 页头（展厅题铭：金色竖线 + 衬线大字） ---------- */

.slide-heading { margin-bottom: clamp(18px, 2.6vh, 30px); }

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--gold);
  font-size: var(--t-meta);
  font-weight: 600;
  letter-spacing: 0.32em;
  margin-bottom: 16px;
}

.kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--gold);
}

.kicker svg { width: 1.2em; height: 1.2em; }

.slide-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--t-title);
  line-height: 1.22;
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: 0.04em;
}

/* ---------- 鎏金结论横幅 ---------- */

.verdict-band {
  margin-top: auto;
  background: linear-gradient(100deg, var(--gold) 0%, #b08a1e 100%);
  color: #1c1608;
  border-radius: 4px;
  padding: clamp(16px, 2.2vh, 24px) clamp(24px, 2vw, 40px);
  font-family: var(--serif);
  font-size: var(--t-body-lg);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.03em;
  box-shadow: 0 14px 40px rgba(201, 162, 39, 0.22);
  display: flex;
  align-items: center;
  gap: 18px;
}

.verdict-band svg { flex: 0 0 auto; width: 1.3em; height: 1.3em; }

/* ---------- 方章徽记 ---------- */

.seal {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(16px, 1.15vw, 22px);
  letter-spacing: 0.22em;
  padding: 0.5em 0.6em 0.5em 0.82em;
  border: 2px solid currentColor;
  outline: 1px solid currentColor;
  outline-offset: 3px;
  background: rgba(22, 19, 14, 0.88);
  z-index: 5;
}

.seal-gold { color: var(--gold-bright); }
.seal-cinnabar { color: #d8654f; }

/* ============================================================
   P1 · 展览主视觉海报（构图来源：特展海报/展厅入口）
   ============================================================ */

.slide-cover { background: var(--obsidian); }

.cover-figure {
  position: absolute;
  inset: 0;
}

.cover-figure img {
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 68%;
  object-fit: cover;
  object-position: center;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 26%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 26%);
}

.cover-spot {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 46% 60% at 66% 40%, rgba(227, 195, 92, 0.16) 0%, transparent 70%);
  animation: spot-breathe 8s ease-in-out infinite alternate;
}

@keyframes spot-breathe {
  from { opacity: 0.55; }
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .cover-spot { animation: none; opacity: 0.8; }
}

.cover-vignette {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(22, 19, 14, 0.96) 0%, rgba(22, 19, 14, 0.82) 34%, rgba(22, 19, 14, 0.12) 62%, rgba(22, 19, 14, 0.4) 100%),
    linear-gradient(180deg, rgba(22, 19, 14, 0.5) 0%, transparent 30%, transparent 66%, rgba(22, 19, 14, 0.78) 100%);
}

.slide-cover .slide-content {
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  position: absolute;
  z-index: 3;
}

.cover-left {
  flex: 0 0 56%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(20px, 3vh, 34px);
  position: relative;
}

.cover-epigraph {
  position: absolute;
  left: calc(-1 * clamp(30px, 2.6vw, 52px));
  top: 50%;
  transform: translateY(-50%);
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: clamp(15px, 1vw, 19px);
  letter-spacing: 0.5em;
  color: var(--gold);
  opacity: 0.9;
  border-left: 1px solid var(--hairline);
  padding-left: 14px;
}

.cover-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.cover-kicker .brand-logo { font-size: clamp(19px, 1.35vw, 26px); }

.cover-kicker .tail {
  font-size: clamp(16px, 1.15vw, 22px);
  color: var(--ivory-dim);
  letter-spacing: 0.14em;
}

.slide-cover h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--t-display);
  line-height: 1.28;
  font-weight: 900;
  color: var(--ivory);
  letter-spacing: 0.05em;
  text-wrap: balance;
}

.slide-cover h1 .gold { color: var(--gold-bright); }

.cover-lead {
  margin: 0;
  font-size: var(--t-sub);
  font-weight: 400;
  color: var(--ivory-dim);
  letter-spacing: 0.12em;
}

.cover-plates {
  display: flex;
  gap: clamp(14px, 1.2vw, 22px);
}

.cover-plates .plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--gold);
  color: var(--gold-bright);
  font-family: var(--serif);
  font-size: var(--t-body);
  font-weight: 700;
  letter-spacing: 0.14em;
  padding: 0.55em 1.15em;
  background: rgba(201, 162, 39, 0.07);
}

.cover-plates .plate svg { width: 1em; height: 1em; }

.cover-foot {
  position: absolute;
  left: 0; right: 0;
  bottom: clamp(18px, 2.6vh, 28px);
  text-align: center;
  z-index: 4;
  font-size: var(--t-meta);
  color: rgba(237, 227, 206, 0.5);
  letter-spacing: 0.18em;
}

/* ============================================================
   P2 · 三件文物展柜 + 展签（构图来源：展柜/展签）
   ============================================================ */

.case-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 1.8vw, 34px);
  align-items: stretch;
  flex: 1;
  min-height: 0;
  padding-top: 4px;
}

.case {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  overflow: hidden;
}

.case-media {
  position: relative;
  aspect-ratio: 4 / 2.9;
  overflow: hidden;
  background: #0d0b08;
}

.case-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.case-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 44%, rgba(237, 227, 206, 0.07) 48%, transparent 54%);
  box-shadow: inset 0 -18px 30px rgba(0, 0, 0, 0.55), inset 0 10px 24px rgba(0, 0, 0, 0.35);
}

.case-media .case-no {
  position: absolute;
  left: 12px;
  top: 12px;
  font-family: var(--serif);
  font-size: clamp(14px, 0.95vw, 18px);
  letter-spacing: 0.2em;
  color: var(--gold-bright);
  background: rgba(22, 19, 14, 0.78);
  border: 1px solid var(--hairline);
  padding: 0.28em 0.7em;
}

.plate-label {
  background: var(--ivory);
  color: #241d10;
  padding: clamp(14px, 1.6vh, 22px) clamp(16px, 1.4vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.plate-label .p-name {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--t-body-lg);
  font-weight: 700;
  line-height: 1.4;
}

.plate-label .p-meta {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--t-meta);
  color: #6b5f45;
  letter-spacing: 0.06em;
}

.plate-label .p-meta .dept {
  font-family: var(--serif);
  font-weight: 700;
  color: #8a6d1d;
  border: 1px solid #c9b06a;
  padding: 0.1em 0.6em;
  letter-spacing: 0.18em;
}

.conflict-strip {
  margin-top: clamp(18px, 2.4vh, 28px);
  background: rgba(139, 111, 71, 0.16);
  border: 1px solid rgba(139, 111, 71, 0.5);
  border-left: 6px solid var(--earth);
  border-radius: 4px;
  padding: clamp(14px, 1.8vh, 20px) clamp(20px, 1.8vw, 32px);
  font-size: var(--t-body);
  line-height: 1.55;
  font-weight: 500;
  color: var(--ivory);
}

.conflict-strip em { font-style: normal; color: var(--gold-bright); font-weight: 700; }

/* ============================================================
   P3 · 考古实证 / 常见误读（构图来源：展览释读展板）
   ============================================================ */

.boundary-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(24px, 2vw, 40px);
  align-items: stretch;
}

.board {
  position: relative;
  background: var(--panel);
  border-radius: 4px;
  padding: clamp(24px, 2.4vh, 36px) clamp(24px, 2vw, 38px);
  display: flex;
  flex-direction: column;
  gap: clamp(12px, 1.6vh, 20px);
}

.board.is-yes { border: 1px solid var(--gold); box-shadow: inset 0 0 0 1px rgba(201, 162, 39, 0.2), 0 18px 44px rgba(0, 0, 0, 0.4); }
.board.is-no { border: 1px solid rgba(176, 64, 46, 0.65); box-shadow: inset 0 0 0 1px rgba(176, 64, 46, 0.2), 0 18px 44px rgba(0, 0, 0, 0.4); }

.board-head {
  font-family: var(--serif);
  font-size: var(--t-sub);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: 0.1em;
}

.is-yes .board-head { color: var(--gold-bright); }
.is-no .board-head { color: #d8654f; }

.board-head .mark {
  width: 1.4em;
  height: 1.4em;
  border: 2px solid currentColor;
  border-radius: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.board-head .mark svg { width: 0.8em; height: 0.8em; }

.board-intro {
  margin: 0;
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--ivory);
  font-weight: 400;
}

.board-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }

.board-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(10px, 1.4vh, 16px) 2px;
  font-size: var(--t-body);
  line-height: 1.5;
  font-weight: 500;
  color: var(--ivory);
}

.board-list li + li { border-top: 1px solid rgba(237, 227, 206, 0.12); }

.board-list .dot {
  flex: 0 0 auto;
  margin-top: 0.3em;
  width: 0.95em;
  height: 0.95em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.is-yes .board-list .dot { color: var(--gold-bright); }
.is-no .board-list .dot { color: #d8654f; }
.board-list .dot svg { width: 100%; height: 100%; }

.board-sub { font-size: var(--t-note); font-weight: 600; color: var(--ivory-dim); letter-spacing: 0.2em; margin: 0; }

/* ============================================================
   P4 · 祭祀坑平面图 K1–K4（构图来源：考古发掘平面）
   ============================================================ */

.dig-map {
  position: relative;
  flex: 1;
  min-height: 0;
  background:
    linear-gradient(rgba(139, 111, 71, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 111, 71, 0.13) 1px, transparent 1px),
    linear-gradient(160deg, #221c12 0%, #1a1610 100%);
  background-size: 72px 72px, 72px 72px, cover;
  border: 1px solid rgba(139, 111, 71, 0.45);
  border-radius: 4px;
  padding: clamp(18px, 2.2vh, 28px) clamp(20px, 1.8vw, 32px);
}

.dig-grid {
  position: relative;
  height: calc(100% - clamp(56px, 7.2vh, 84px));
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(28px, 2.6vw, 46px);
  align-items: stretch;
}

.pit {
  position: relative;
  align-self: stretch;
  background: rgba(22, 19, 14, 0.86);
  border: 1.5px solid var(--earth);
  border-radius: 12px;
  padding: clamp(18px, 2.4vh, 30px) clamp(18px, 1.5vw, 28px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(10px, 1.6vh, 18px);
  box-shadow: inset 0 0 24px rgba(0, 0, 0, 0.6);
}

.pit:nth-child(odd) { margin-top: 2.4vh; }
.pit:nth-child(even) { margin-bottom: 2.4vh; }

.pit .k-chip {
  align-self: flex-start;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(17px, 1.2vw, 23px);
  letter-spacing: 0.16em;
  color: #10251e;
  background: var(--patina-bright);
  padding: 0.24em 0.7em;
  border-radius: 3px;
}

.pit h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(24px, 1.75vw, 34px);
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: 0.06em;
}

.pit p { margin: 0; font-size: var(--t-note); line-height: 1.6; color: var(--ivory-dim); font-weight: 400; }

.dig-arrow {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  color: var(--gold);
  opacity: 0.75;
  z-index: 2;
}

.dig-arrow svg { width: clamp(22px, 1.7vw, 32px); height: clamp(22px, 1.7vw, 32px); }

.dig-return {
  position: absolute;
  left: clamp(20px, 1.8vw, 32px);
  right: clamp(20px, 1.8vw, 32px);
  bottom: clamp(30px, 4vh, 46px);
  height: clamp(26px, 3.2vh, 38px);
  border: 2.5px dashed var(--gold);
  border-top: none;
  border-radius: 0 0 16px 16px;
  opacity: 0.7;
}

.dig-return::before {
  content: "";
  position: absolute;
  left: -11px;
  top: -13px;
  border: 9px solid transparent;
  border-bottom: 15px solid var(--gold);
}

.dig-legend {
  position: absolute;
  right: clamp(16px, 1.4vw, 26px);
  bottom: clamp(4px, 0.8vh, 10px);
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: var(--t-meta);
  color: var(--gold);
  letter-spacing: 0.12em;
  font-family: var(--serif);
}

.compass {
  position: absolute;
  right: clamp(16px, 1.4vw, 26px);
  top: clamp(12px, 1.6vh, 20px);
  width: clamp(44px, 3.2vw, 60px);
  height: clamp(44px, 3.2vw, 60px);
  color: var(--earth);
  opacity: 0.9;
}

/* ============================================================
   P5 · 太阳轮决策循环（构图来源：青铜太阳形器意象）
   ============================================================ */

.slide-cycle .slide-content { flex-direction: row; gap: clamp(24px, 2.4vw, 48px); }

.cycle-left { flex: 0 0 30%; display: flex; flex-direction: column; min-width: 0; }
.cycle-left .slide-heading h2 { font-size: clamp(36px, 2.9vw, 56px); }

.relic-case {
  margin: auto 0;
  align-self: stretch;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  overflow: hidden;
}

.relic-case .rc-media { aspect-ratio: 4 / 3; overflow: hidden; background: #0d0b08; position: relative; }
.relic-case .rc-media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.relic-case .rc-media::after {
  content: "";
  position: absolute;
  inset: 0;
  box-shadow: inset 0 -16px 28px rgba(0, 0, 0, 0.5);
}

.relic-case .rc-cap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: var(--t-meta);
  color: var(--ivory-dim);
  letter-spacing: 0.1em;
}

.relic-case .rc-cap .no { font-family: var(--serif); color: var(--gold); letter-spacing: 0.2em; }

.cycle-rhythm {
  margin-top: auto;
  background: var(--ivory);
  color: #241d10;
  border-radius: 4px;
  padding: clamp(18px, 2.2vh, 28px) clamp(20px, 1.6vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cycle-rhythm .chip {
  align-self: flex-start;
  font-family: var(--serif);
  background: #241d10;
  color: var(--gold-bright);
  font-size: var(--t-meta);
  font-weight: 700;
  padding: 0.32em 0.95em;
  letter-spacing: 0.22em;
}

.cycle-rhythm p { margin: 0; font-size: var(--t-body); line-height: 1.6; font-weight: 500; }
.cycle-rhythm p em.g { font-style: normal; color: #8a6d1d; font-weight: 800; }
.cycle-rhythm p em.c { font-style: normal; color: var(--cinnabar); font-weight: 800; }

.cycle-stage { position: relative; flex: 1; min-width: 0; }

.cycle-ring {
  --ring-size: min(66vh, 34vw);
  --r: calc(var(--ring-size) / 2);
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--ring-size);
  height: var(--ring-size);
  transform: translate(-50%, -50%);
}

.cycle-ring .ring-svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }

.ring-svg .rim {
  fill: none;
  stroke: var(--patina);
  stroke-width: 10;
  opacity: 0.9;
}

.ring-svg .rim-inner {
  fill: none;
  stroke: rgba(201, 162, 39, 0.4);
  stroke-width: 1.5;
}

.ring-svg .spoke {
  stroke: var(--patina);
  stroke-width: 5;
  opacity: 0.75;
}

.ring-svg .hub {
  fill: #10251e;
  stroke: var(--patina-bright);
  stroke-width: 3;
}

.cycle-chev {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0; height: 0;
  transform: rotate(var(--a, 0deg)) translate(calc(var(--r) * 1.0));
}

.cycle-chev svg {
  position: absolute;
  width: clamp(24px, 1.8vw, 34px);
  height: clamp(24px, 1.8vw, 34px);
  color: var(--gold);
  transform: translate(-50%, -50%) rotate(90deg);
}

.cycle-node {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(var(--a, 0deg)) translate(var(--r)) rotate(calc(-1 * var(--a, 0deg)));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 4;
}

.cycle-node .n {
  width: clamp(52px, 3.6vw, 70px);
  height: clamp(52px, 3.6vw, 70px);
  border-radius: 999px;
  background: radial-gradient(circle at 34% 30%, #5d8f7d, #35594d 70%);
  border: 2.5px solid var(--gold);
  color: var(--gold-bright);
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(22px, 1.5vw, 30px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.55);
}

.cycle-node .t {
  font-family: var(--serif);
  font-size: clamp(19px, 1.32vw, 26px);
  font-weight: 700;
  color: var(--ivory);
  background: rgba(22, 19, 14, 0.85);
  border: 1px solid var(--hairline);
  padding: 0.22em 0.7em;
  white-space: nowrap;
  letter-spacing: 0.08em;
}

.cycle-node.is-exec .n { background: radial-gradient(circle at 34% 30%, #e3c35c, #a37f16 72%); color: #1c1608; border-color: var(--ivory); }

.cycle-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.cycle-center .big {
  font-family: var(--serif);
  font-size: clamp(28px, 2.1vw, 40px);
  font-weight: 800;
  color: var(--gold-bright);
  letter-spacing: 0.12em;
}

.cycle-center .small { font-size: var(--t-meta); font-weight: 500; color: var(--ivory-dim); letter-spacing: 0.14em; }

.cycle-weekly {
  position: absolute;
  right: max(1.5vw, 12px);
  top: 2vh;
  background: rgba(176, 64, 46, 0.14);
  border: 2px dashed var(--cinnabar);
  border-radius: 4px;
  padding: clamp(14px, 1.8vh, 20px) clamp(16px, 1.3vw, 26px);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 5;
  max-width: 22vw;
}

.cycle-weekly svg { width: clamp(26px, 1.9vw, 36px); height: clamp(26px, 1.9vw, 36px); color: #d8654f; flex: 0 0 auto; }
.cycle-weekly .w-title { font-family: var(--serif); font-size: clamp(19px, 1.3vw, 25px); font-weight: 700; color: #d8654f; letter-spacing: 0.08em; }
.cycle-weekly .w-sub { font-size: var(--t-meta); font-weight: 500; color: var(--ivory-dim); }

/* ============================================================
   P6 · 文物修复台（构图来源：修复原则板 + 技术展板）
   ============================================================ */

.keep-board {
  background: transparent;
  border: 1.5px solid var(--gold);
  outline: 1px solid rgba(201, 162, 39, 0.3);
  outline-offset: 4px;
  border-radius: 2px;
  padding: clamp(16px, 2vh, 24px) clamp(22px, 1.9vw, 36px);
  display: flex;
  align-items: center;
  gap: clamp(16px, 1.4vw, 26px);
  background: rgba(201, 162, 39, 0.06);
}

.keep-board .pin {
  flex: 0 0 auto;
  font-family: var(--serif);
  background: var(--gold);
  color: #1c1608;
  font-weight: 800;
  font-size: var(--t-meta);
  padding: 0.42em 0.9em;
  letter-spacing: 0.2em;
}

.keep-board p {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--t-body-lg);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ivory);
  letter-spacing: 0.04em;
}

.restore-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 0.82fr;
  gap: clamp(18px, 1.6vw, 30px);
  margin-top: clamp(16px, 2vh, 24px);
}

.tech-card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: clamp(18px, 2.2vh, 28px) clamp(20px, 1.6vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tech-card h3 {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-size: clamp(23px, 1.6vw, 31px);
  font-weight: 700;
  color: var(--ivory);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.05em;
}

.tech-card h3 .t-chip {
  font-family: var(--sans);
  font-size: 0.6em;
  background: rgba(74, 122, 106, 0.25);
  color: var(--patina-bright);
  border: 1px solid rgba(111, 160, 141, 0.5);
  padding: 0.24em 0.8em;
  letter-spacing: 0.14em;
}

.tech-card ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; flex: 1; justify-content: space-evenly; }

.tech-card li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: var(--t-note);
  font-weight: 400;
  color: var(--ivory-dim);
  line-height: 1.45;
}

.tech-card li::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  background: var(--patina-bright);
  transform: rotate(45deg);
}

.effect-card {
  background: rgba(201, 162, 39, 0.08);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: clamp(18px, 2.2vh, 28px) clamp(18px, 1.5vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.effect-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(21px, 1.5vw, 29px);
  font-weight: 700;
  color: var(--gold-bright);
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: 0.08em;
}

.effect-card h3 svg { width: 1em; height: 1em; }

.effect-tags { display: flex; flex-wrap: wrap; gap: 10px; align-content: flex-start; }

.effect-tags span {
  border: 1px solid var(--gold);
  color: var(--gold-bright);
  font-size: var(--t-note);
  font-weight: 600;
  padding: 0.45em 1em;
  letter-spacing: 0.06em;
  background: rgba(22, 19, 14, 0.5);
}

/* ============================================================
   P7 · 观展自查 + 结语墙（构图来源：观展手册 + 展览结语墙）
   ============================================================ */

.check-grid {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(24px, 2vw, 40px);
}

.check-card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: clamp(20px, 2.6vh, 34px) clamp(24px, 2vw, 38px);
  display: flex;
  flex-direction: column;
  justify-content: space-evenly;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: clamp(8px, 1.2vh, 14px) 0;
  font-size: var(--t-body);
  font-weight: 500;
  line-height: 1.55;
  color: var(--ivory);
}

.check-row + .check-row { border-top: 1px solid rgba(237, 227, 206, 0.12); }

.check-row .qicon {
  flex: 0 0 auto;
  margin-top: 0.05em;
  width: 1.65em;
  height: 1.65em;
  border: 1.5px solid var(--gold);
  color: var(--gold-bright);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  background: rgba(201, 162, 39, 0.08);
}

.check-row .qicon svg { width: 0.95em; height: 0.95em; }

.check-side { display: flex; flex-direction: column; gap: clamp(18px, 2.2vh, 28px); min-height: 0; }

.gap-card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: clamp(16px, 2vh, 26px) clamp(20px, 1.6vw, 30px);
}

.gap-card h3 {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: clamp(20px, 1.4vw, 27px);
  font-weight: 700;
  color: var(--ivory);
  letter-spacing: 0.06em;
}

.gap-tags { display: flex; flex-wrap: wrap; gap: 10px; }

.gap-tags span {
  border: 1px solid var(--patina-bright);
  color: var(--patina-bright);
  font-size: var(--t-note);
  font-weight: 600;
  padding: 0.4em 1em;
  letter-spacing: 0.06em;
}

.quote-wall {
  position: relative;
  flex: 1;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--hairline);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: clamp(22px, 3vh, 38px) clamp(24px, 2vw, 38px);
  background: #0f0d09;
}

.quote-wall .qw-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.5;
}

.quote-wall .qw-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(15, 13, 9, 0.9) 0%, rgba(15, 13, 9, 0.55) 55%, rgba(15, 13, 9, 0.25) 100%);
}

.quote-wall p {
  position: relative;
  z-index: 2;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(24px, 1.7vw, 33px);
  font-weight: 700;
  line-height: 1.75;
  color: var(--ivory);
  letter-spacing: 0.04em;
}

.quote-wall p mark {
  background: none;
  color: var(--gold-bright);
  border-bottom: 2px solid var(--gold);
  padding-bottom: 1px;
}

.quote-wall .quote-meta {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ivory-dim);
  font-size: var(--t-meta);
  letter-spacing: 0.2em;
  font-family: var(--serif);
}

.quote-wall .quote-meta::before {
  content: "";
  width: 30px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 窄窗兜底 ---------- */

@media (max-width: 1024px) {
  .slide-content { overflow-y: auto; }
  .case-row, .boundary-grid, .restore-grid, .check-grid, .dig-grid { grid-template-columns: 1fr; }
  .pit:nth-child(odd), .pit:nth-child(even) { margin: 0; }
  .slide-cycle .slide-content { flex-direction: column; }
  .cycle-stage { min-height: 120vh; }
  .slide-cover .slide-content { flex-direction: column; }
  .cover-figure img { width: 100%; mask-image: linear-gradient(180deg, transparent 0%, #000 30%); }
}