/* ================================================================
   场 · 万物的涟漪 —— 样式
   ================================================================ */
:root {
  --bg: #05060d;
  --bg2: #0b0d1c;
  --ink: #ece9f5;
  --ink2: #b4b1c8;
  --muted: #7b7892;
  --cyan: #7ee0ff;
  --gold: #f4b942;
  --mag: #f15bb5;
  --vio: #c792ea;
  --line: rgba(255, 255, 255, 0.08);
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", serif;
  --latin: "Cormorant Garamond", "Noto Serif SC", Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --hue: 220;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-weight: 300;
  line-height: 1.85;
  overflow-x: hidden;
  cursor: default;
  -webkit-font-smoothing: antialiased;
}
body.loading { overflow: hidden; }
::selection { background: var(--mag); color: #fff; }

/* 背景氛围：随滚动改变色相 */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2;
  background:
    radial-gradient(60vw 60vw at 15% 10%, hsla(var(--hue), 80%, 45%, 0.12), transparent 60%),
    radial-gradient(50vw 50vw at 90% 80%, hsla(calc(var(--hue) + 90), 80%, 50%, 0.10), transparent 60%),
    radial-gradient(80vw 50vw at 50% 120%, hsla(calc(var(--hue) - 60), 70%, 40%, 0.12), transparent 70%),
    var(--bg);
  transition: background 0.6s;
}

#stars, #fx { position: fixed; inset: 0; width: 100vw; height: 100vh; pointer-events: none; }
#stars { z-index: -1; }
#fx { z-index: 50; mix-blend-mode: screen; }

.grain {
  position: fixed; inset: -50%; z-index: 49; pointer-events: none; opacity: 0.05;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  animation: grain 1.2s steps(6) infinite;
}
@keyframes grain {
  0% { transform: translate(0, 0); } 20% { transform: translate(-3%, 2%); }
  40% { transform: translate(2%, -4%); } 60% { transform: translate(-4%, -1%); }
  80% { transform: translate(3%, 3%); } 100% { transform: translate(0, 0); }
}

#progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0; z-index: 60;
  background: linear-gradient(90deg, var(--cyan), var(--vio), var(--mag), var(--gold));
  box-shadow: 0 0 12px var(--mag);
}

/* ---------- Loader ---------- */
#loader {
  position: fixed; inset: 0; z-index: 100; display: grid; place-items: center;
  background: var(--bg);
  transition: opacity 1s ease, visibility 1s;
}
#loader.done { opacity: 0; visibility: hidden; }
.loader-inner { text-align: center; }
.loader-symbol {
  font-family: var(--latin); font-size: 4.5rem; letter-spacing: 0.3em; color: var(--ink);
  display: flex; gap: 0.3em; justify-content: center; align-items: center;
}
.loader-symbol span { animation: pulse 1.6s ease-in-out infinite; text-shadow: 0 0 30px var(--cyan); }
.loader-symbol .arrow { font-size: 0.6em; color: var(--muted); animation-delay: 0.3s; }
.loader-symbol span:last-child { animation-delay: 0.6s; color: var(--mag); text-shadow: 0 0 30px var(--mag); }
.loader-text { margin-top: 1rem; color: var(--muted); letter-spacing: 0.4em; font-size: 0.85rem; }
.loader-bar { margin: 1.4rem auto 0; width: 220px; height: 1px; background: var(--line); overflow: hidden; }
.loader-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--cyan), var(--mag)); transition: width 0.25s; }
@keyframes pulse { 0%, 100% { opacity: 0.35; transform: scale(0.95); } 50% { opacity: 1; transform: scale(1.05); } }

/* ---------- Chapter nav ---------- */
#chapters {
  position: fixed; right: 26px; top: 50%; transform: translateY(-50%); z-index: 40;
  display: flex; flex-direction: column; gap: 14px;
}
#chapters a {
  position: relative; width: 8px; height: 8px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35); transition: all 0.4s;
}
#chapters a::after {
  content: attr(data-label);
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%) translateX(8px);
  white-space: nowrap; font-size: 0.75rem; letter-spacing: 0.15em; color: var(--ink2);
  opacity: 0; transition: all 0.35s; pointer-events: none;
}
#chapters:hover a::after { opacity: 1; transform: translateY(-50%); }
#chapters a.active { background: var(--cyan); border-color: var(--cyan); box-shadow: 0 0 12px var(--cyan); transform: scale(1.4); }
#chapters a:not(.active)::after { color: var(--muted); }

/* ---------- Sections ---------- */
.section { position: relative; padding: 16vh 8vw; }
.section.narrow { max-width: 1000px; margin: 0 auto; }
.section-head { text-align: center; max-width: 780px; margin: 0 auto 10vh; }
.part-no {
  font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.5em; color: var(--cyan);
  margin-bottom: 1.2rem; opacity: 0.8;
}
h2 {
  font-weight: 900; font-size: clamp(2.2rem, 5vw, 4.2rem); line-height: 1.2; letter-spacing: 0.04em;
  background: linear-gradient(120deg, #fff 20%, var(--cyan) 50%, var(--mag) 80%);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: sheen 8s linear infinite;
}
@keyframes sheen { to { background-position: -200% center; } }
.lead { margin-top: 1.4rem; color: var(--ink2); font-size: 1.1rem; }

/* ---------- Hero ---------- */
#hero { height: 100vh; min-height: 640px; padding: 0; display: grid; place-items: center; overflow: hidden; }
#heroCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-content { position: relative; text-align: center; pointer-events: none; z-index: 2; }
.eyebrow { font-family: var(--latin); font-style: italic; letter-spacing: 0.3em; color: var(--ink2); font-size: 1.05rem; }
.hero-title {
  font-size: clamp(4rem, 14vw, 11rem); font-weight: 900; letter-spacing: 0.12em; line-height: 1.1;
  margin: 1.5rem 0 0.8rem;
}
.ht-char {
  display: inline-block;
  background: linear-gradient(180deg, #ffffff 0%, #cfd9ff 45%, var(--vio) 75%, var(--mag) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 30px rgba(126, 224, 255, 0.35));
  opacity: 0; transform: translateY(60px) rotateX(80deg) scale(0.8); filter: blur(12px);
  transition: all 1.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.ht-char.in { opacity: 1; transform: none; filter: drop-shadow(0 0 30px rgba(126, 224, 255, 0.35)); }
.ht-char.in { animation: float 6s ease-in-out infinite; }
.ht-char:nth-child(2).in { animation-delay: -1.5s; }
.ht-char:nth-child(3).in { animation-delay: -3s; }
.ht-char:nth-child(4).in { animation-delay: -4.5s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.hero-sub { font-size: clamp(1.3rem, 2.6vw, 2rem); letter-spacing: 0.6em; font-weight: 500; color: var(--ink); text-indent: 0.6em; }
.hero-desc { margin-top: 1rem; color: var(--ink2); font-size: 1rem; letter-spacing: 0.08em; }
.hero-hint { margin-top: 3rem; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.3em; color: var(--muted); }
.scroll-cue { position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%); width: 22px; height: 36px; border: 1px solid rgba(255,255,255,0.35); border-radius: 12px; z-index: 2; }
.scroll-cue span { position: absolute; left: 50%; top: 7px; width: 2px; height: 7px; margin-left: -1px; background: var(--cyan); border-radius: 2px; animation: cue 1.8s infinite; }
@keyframes cue { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(14px); } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(30px); filter: blur(8px); transition: opacity 1.1s ease, transform 1.1s cubic-bezier(0.2, 0.8, 0.2, 1), filter 1.1s; }
.reveal.in { opacity: 1; transform: none; filter: none; }

/* ---------- Question ---------- */
#question { min-height: 100vh; display: flex; align-items: center; }
.big-q .words { font-size: clamp(1.4rem, 3vw, 2.4rem); line-height: 1.7; margin: 0.8em 0; font-weight: 500; }
.big-q .words .w { opacity: 0.08; transition: opacity 0.4s, color 0.4s, text-shadow 0.4s; }
.big-q .words .w.lit { opacity: 1; }
.big-q .words.dim .w.lit { opacity: 0.6; }
.big-q em { font-style: normal; color: var(--gold); }
.big-q strong { color: var(--cyan); font-weight: 900; }
.big-q .glow-line .w.lit { text-shadow: 0 0 24px rgba(126, 224, 255, 0.25); }

/* ---------- Marquee ---------- */
.marquee { overflow: hidden; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 1.4rem 0; background: rgba(255,255,255,0.015); }
.marquee-track { display: flex; gap: 3rem; width: max-content; animation: marq 50s linear infinite; font-family: var(--latin); font-style: italic; font-size: 1.8rem; color: var(--ink2); white-space: nowrap; }
.marquee-track span:nth-child(4n+1) { color: var(--cyan); }
.marquee-track span:nth-child(4n+3) { color: var(--mag); }
.marquee-track span:nth-child(2n) { color: var(--muted); font-style: normal; font-size: 1rem; align-self: center; }
@keyframes marq { to { transform: translateX(-50%); } }

/* ---------- Timeline ---------- */
.timeline { position: relative; max-width: 1200px; margin: 0 auto; }
.tl-line { position: absolute; left: 50%; top: 0; bottom: 0; width: 2px; margin-left: -1px; background: var(--line); }
.tl-fill { width: 100%; height: 0; background: linear-gradient(180deg, var(--gold), var(--cyan), var(--mag), var(--vio), #fff); box-shadow: 0 0 14px var(--cyan); position: relative; }
.tl-fill::after { content: ""; position: absolute; bottom: -6px; left: 50%; width: 12px; height: 12px; margin-left: -6px; border-radius: 50%; background: #fff; box-shadow: 0 0 20px 6px var(--cyan); }
.tl-item { position: relative; width: 50%; padding: 0 60px 9vh 0; }
.tl-item:nth-child(odd) { margin-left: 50%; padding: 0 0 9vh 60px; }
.tl-dot { position: absolute; top: 34px; right: -7px; width: 14px; height: 14px; border-radius: 50%; background: var(--bg); border: 2px solid var(--c); transition: all 0.5s; }
.tl-item:nth-child(odd) .tl-dot { left: -7px; right: auto; }
.tl-item.in .tl-dot { background: var(--c); box-shadow: 0 0 18px 4px var(--c); }
.tl-card {
  position: relative; padding: 2.2rem 2.2rem 1.8rem; border-radius: 18px;
  background: linear-gradient(160deg, rgba(255,255,255,0.055), rgba(255,255,255,0.015));
  border: 1px solid var(--line);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  opacity: 0; transform: translateX(-60px) scale(0.96); filter: blur(10px);
  transition: opacity 1s, transform 1s cubic-bezier(0.2, 0.8, 0.2, 1), filter 1s, border-color 0.4s, box-shadow 0.4s;
  overflow: hidden;
}
.tl-item:nth-child(odd) .tl-card { transform: translateX(60px) scale(0.96); }
.tl-item.in .tl-card { opacity: 1; transform: none; filter: none; }
.tl-card:hover { border-color: color-mix(in srgb, var(--c) 50%, transparent); box-shadow: 0 20px 60px -20px color-mix(in srgb, var(--c) 45%, transparent); }
.tl-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), color-mix(in srgb, var(--c) 16%, transparent), transparent 50%);
  opacity: 0; transition: opacity 0.4s;
}
.tl-card:hover::before { opacity: 1; }
.tl-year {
  font-family: var(--latin); font-weight: 700; font-size: 3.6rem; line-height: 1;
  color: transparent; -webkit-text-stroke: 1px var(--c);
  background: linear-gradient(90deg, var(--c), transparent 70%); -webkit-background-clip: text; background-clip: text;
  opacity: 0.95;
}
.tl-glyph {
  position: absolute; top: 1.2rem; right: 1.6rem; font-family: var(--latin); font-style: italic; font-size: 3.2rem;
  color: var(--c); opacity: 0.18; text-shadow: 0 0 20px var(--c); transition: opacity 0.4s, transform 0.6s;
}
.tl-card:hover .tl-glyph { opacity: 0.6; transform: scale(1.12) rotate(-6deg); }
.tl-card h3 { font-size: 1.4rem; font-weight: 700; margin: 0.8rem 0 0.6rem; letter-spacing: 0.03em; }
.tl-card p { color: var(--ink2); font-size: 0.98rem; margin-bottom: 0.7rem; }
.tl-card em { font-style: normal; color: var(--ink); border-bottom: 1px dashed var(--c); }
.tl-card strong { color: var(--c); font-weight: 700; }
.tl-card .why { margin-top: 1rem; padding-top: 0.9rem; border-top: 1px solid var(--line); font-size: 0.92rem; color: var(--ink); }
.tl-card .why b { display: inline-block; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em; color: var(--c); border: 1px solid var(--c); border-radius: 20px; padding: 0 0.7em; margin-right: 0.7em; font-weight: 500; }
.tl-card.featured { background: linear-gradient(160deg, rgba(244,185,66,0.12), rgba(241,91,181,0.08) 60%, rgba(126,224,255,0.08)); border-color: rgba(255,255,255,0.25); }
.tl-card.featured .tl-year { -webkit-text-stroke: 0; background: linear-gradient(90deg, var(--gold), var(--mag), var(--cyan)); -webkit-background-clip: text; background-clip: text; }
.eq { font-family: var(--latin); font-style: italic; font-size: 1.1em; color: var(--ink); white-space: nowrap; }

/* ---------- Part intro ---------- */
.part-intro { text-align: center; padding: 22vh 8vw 8vh; }

/* ---------- Concept blocks ---------- */
.concept { display: grid; grid-template-columns: 1fr 1.25fr; gap: 6vw; align-items: center; max-width: 1400px; margin: 0 auto; min-height: 90vh; }
.concept.reverse { grid-template-columns: 1.25fr 1fr; }
.concept.reverse .concept-text { order: 2; }
.concept.wide { grid-template-columns: 1fr 1.6fr; }
.concept-text h2 { font-size: clamp(1.9rem, 3.6vw, 3rem); margin-bottom: 1.4rem; }
.concept-text p { color: var(--ink2); margin-bottom: 1rem; font-size: 1.04rem; }
.concept-text strong { color: var(--ink); font-weight: 700; background: linear-gradient(transparent 62%, rgba(241,91,181,0.35) 62%); }
.concept-text em { font-style: normal; color: var(--gold); }
.concept-text .note { font-size: 0.93rem; color: var(--muted); border-left: 2px solid var(--vio); padding-left: 1rem; }
.c-no { font-family: var(--latin); font-size: 6rem; font-weight: 300; line-height: 0.9; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,0.22); margin-bottom: 0.5rem; }
.formula { font-family: var(--latin); font-style: italic; font-size: 2rem !important; color: var(--ink) !important; text-align: center; padding: 0.6rem 0; text-shadow: 0 0 24px rgba(126,224,255,0.5); }
.concept-demo { position: relative; }
.demo-canvas {
  width: 100%; aspect-ratio: 16 / 11; display: block; border-radius: 20px;
  background: radial-gradient(ellipse at center, rgba(20, 24, 50, 0.7), rgba(5, 6, 13, 0.85));
  border: 1px solid var(--line);
  box-shadow: inset 0 0 80px rgba(0,0,0,0.6), 0 30px 80px -30px rgba(126, 224, 255, 0.25);
  cursor: crosshair; touch-action: none;
}
.controls { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.2rem; align-items: center; }
.demo-caption { margin-top: 0.8rem; font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.08em; color: var(--muted); min-height: 1.4em; }
.demo-caption b { color: var(--cyan); font-weight: 500; }

.btn {
  position: relative; font-family: var(--serif); font-size: 0.9rem; color: var(--ink); letter-spacing: 0.08em;
  padding: 0.6rem 1.2rem; border-radius: 999px; cursor: pointer;
  background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.18);
  transition: all 0.3s; overflow: hidden;
}
.btn::before { content: ""; position: absolute; inset: 0; border-radius: inherit; background: linear-gradient(120deg, var(--cyan), var(--mag)); opacity: 0; transition: opacity 0.3s; z-index: -1; }
.btn:hover { border-color: var(--cyan); box-shadow: 0 0 20px rgba(126,224,255,0.35); transform: translateY(-2px); }
.btn:active { transform: translateY(0) scale(0.97); }
.btn.on { border-color: transparent; color: #0a0a14; font-weight: 700; }
.btn.on::before { opacity: 1; }
.btn.big { font-size: 1.05rem; padding: 0.8rem 1.8rem; font-family: var(--latin); font-style: italic; }
.btn.ghost { background: transparent; color: var(--ink2); }
.btn.small { font-size: 0.8rem; padding: 0.4rem 1rem; white-space: nowrap; flex-shrink: 0; }

.slider { display: flex; align-items: center; gap: 0.9rem; font-size: 0.9rem; color: var(--ink2); letter-spacing: 0.08em; flex: 1; min-width: 240px; }
input[type="range"] { -webkit-appearance: none; appearance: none; flex: 1; height: 2px; background: linear-gradient(90deg, var(--cyan), var(--mag)); border-radius: 2px; outline: none; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px rgba(126,224,255,0.25), 0 0 18px var(--cyan); cursor: grab; }
input[type="range"]::-moz-range-thumb { width: 18px; height: 18px; border: 0; border-radius: 50%; background: #fff; box-shadow: 0 0 0 4px rgba(126,224,255,0.25), 0 0 18px var(--cyan); cursor: grab; }

/* ---------- Feynman ---------- */
.legend-row { display: flex; flex-direction: column; gap: 0.5rem; margin-top: 1.4rem; font-size: 0.9rem; color: var(--ink2); }
.legend-row span { display: flex; align-items: center; gap: 0.8rem; }
.vtx { display: inline-block; width: 10px; height: 10px; border-radius: 50%; background: #fff; box-shadow: 0 0 10px #fff, 0 0 20px var(--mag); margin: 0 18px; }
.tabs { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0.35rem; border-radius: 999px; background: rgba(255,255,255,0.04); border: 1px solid var(--line); width: fit-content; }
.tab { font-family: var(--serif); background: none; border: 0; color: var(--ink2); padding: 0.5rem 1.1rem; border-radius: 999px; cursor: pointer; font-size: 0.9rem; transition: all 0.3s; }
.tab:hover { color: var(--ink); }
.tab.active { background: linear-gradient(120deg, rgba(126,224,255,0.25), rgba(241,91,181,0.25)); color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,0.2); }
.feyn-stage { position: relative; margin-top: 1.2rem; border-radius: 20px; border: 1px solid var(--line); background: radial-gradient(ellipse at center, rgba(30, 20, 60, 0.55), rgba(5, 6, 13, 0.85)); overflow: hidden; }
.feyn-stage::before { content: ""; position: absolute; inset: 0; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 40px 40px; opacity: 0.35; mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%); -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%); }
#feynSvg { width: 100%; display: block; position: relative; }
.time-arrow { position: absolute; bottom: 12px; right: 18px; font-family: var(--mono); font-size: 0.72rem; color: var(--muted); letter-spacing: 0.2em; }
.feyn-caption { margin-top: 1rem; color: var(--ink2); font-size: 0.98rem; min-height: 3.5em; transition: opacity 0.4s; }
.feyn-caption b { color: var(--gold); font-weight: 500; }

/* ---------- Running chart ---------- */
.chart-sec { padding-top: 4vh; }
.chart-card { max-width: 1100px; margin: 0 auto; padding: 2.4rem; border-radius: 22px; background: rgba(26, 26, 25, 0.55); border: 1px solid var(--line); backdrop-filter: blur(8px); }
.chart-title { font-size: 1.35rem; font-weight: 700; }
.chart-sub { color: var(--muted); font-size: 0.85rem; margin-top: 0.3rem; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 1.4rem; margin: 1.2rem 0 0.6rem; font-size: 0.88rem; color: var(--ink2); }
.chart-legend span { display: flex; align-items: center; gap: 0.5rem; }
.chart-legend i { width: 18px; height: 3px; border-radius: 2px; display: inline-block; }
.chart-box { position: relative; }
#runChart { width: 100%; display: block; overflow: visible; }
#runChart .grid line { stroke: rgba(255,255,255,0.07); }
#runChart .axis text { fill: var(--muted); font-family: var(--mono); font-size: 12px; }
#runChart .axis-title { fill: var(--ink2); font-size: 13px; font-family: var(--serif); }
#runChart .series { fill: none; stroke-width: 2; stroke-linecap: round; }
#runChart .dlabel { font-size: 13px; fill: var(--ink); font-family: var(--serif); }
#runChart .xhair { stroke: rgba(255,255,255,0.35); stroke-dasharray: 3 4; }
#runChart .hdot { stroke: #1a1a19; stroke-width: 2; }
.chart-tip { position: absolute; pointer-events: none; opacity: 0; transition: opacity 0.15s; background: rgba(12, 12, 20, 0.94); border: 1px solid rgba(255,255,255,0.15); border-radius: 10px; padding: 0.6rem 0.8rem; font-size: 0.82rem; min-width: 170px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.chart-tip .tt-h { font-family: var(--mono); color: var(--ink2); margin-bottom: 0.3rem; font-size: 0.75rem; }
.chart-tip .tt-r { display: flex; justify-content: space-between; gap: 1rem; color: var(--ink); }
.chart-tip .tt-r span { display: flex; align-items: center; gap: 0.4rem; color: var(--ink2); }
.chart-tip .tt-r i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.chart-foot { display: flex; gap: 2rem; align-items: flex-start; justify-content: space-between; margin-top: 1rem; }
.chart-foot p { color: var(--ink2); font-size: 0.92rem; }
.chart-foot b { color: var(--ink); }
.chart-table table { width: 100%; border-collapse: collapse; margin-top: 1rem; font-family: var(--mono); font-size: 0.82rem; }
.chart-table th, .chart-table td { padding: 0.45rem 0.8rem; border-bottom: 1px solid var(--line); text-align: right; color: var(--ink2); }
.chart-table th { color: var(--ink); font-weight: 500; }

/* ---------- Standard model ---------- */
.sm-filters { display: flex; justify-content: center; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 3rem; }
.chip { font-family: var(--serif); padding: 0.45rem 1.2rem; border-radius: 999px; background: transparent; border: 1px solid rgba(255,255,255,0.18); color: var(--ink2); cursor: pointer; transition: all 0.3s; font-size: 0.9rem; }
.chip:hover { color: var(--ink); border-color: rgba(255,255,255,0.4); }
.chip.active { color: #0a0a14; background: #fff; border-color: #fff; font-weight: 700; }
.sm-layout { display: grid; grid-template-columns: auto 340px; gap: 3rem; justify-content: center; align-items: start; max-width: 1200px; margin: 0 auto; }
.sm-grid { display: grid; grid-template-columns: repeat(5, 118px); grid-template-rows: repeat(4, 128px); gap: 12px; perspective: 1000px; }
.p-card {
  --pc: var(--cyan);
  position: relative; border-radius: 14px; padding: 0.7rem 0.8rem; cursor: pointer;
  background: linear-gradient(160deg, color-mix(in srgb, var(--pc) 16%, transparent), rgba(255,255,255,0.02));
  border: 1px solid color-mix(in srgb, var(--pc) 35%, transparent);
  transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s, box-shadow 0.4s, filter 0.4s;
  opacity: 0; transform: translateY(30px) rotateX(-40deg);
}
.p-card.in { opacity: 1; transform: none; }
.p-card:hover, .p-card.sel { transform: translateY(-6px) scale(1.06); box-shadow: 0 0 0 1px var(--pc), 0 18px 40px -10px var(--pc); z-index: 2; }
.p-card.dim { opacity: 0.12; filter: grayscale(1); }
.p-card .pm { font-family: var(--mono); font-size: 0.64rem; color: var(--ink2); }
.p-card .pq { position: absolute; top: 0.7rem; right: 0.8rem; font-family: var(--mono); font-size: 0.64rem; color: var(--ink2); }
.p-card .ps { font-family: var(--latin); font-style: italic; font-weight: 500; font-size: 2.6rem; line-height: 1.2; text-align: center; margin-top: 0.2rem; color: #fff; text-shadow: 0 0 18px var(--pc); }
.p-card .pn { text-align: center; font-size: 0.78rem; color: var(--ink2); }
.p-card.higgs { grid-row: 1 / span 2; }
.p-card.higgs .ps { font-size: 4rem; margin-top: 2.4rem; }
.sm-label { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.3em; color: var(--muted); }
.sm-detail {
  position: sticky; top: 15vh; padding: 2rem; border-radius: 20px; min-height: 420px;
  background: linear-gradient(160deg, rgba(255,255,255,0.06), rgba(255,255,255,0.01)); border: 1px solid var(--line);
  overflow: hidden;
}
.sm-detail::before { content: ""; position: absolute; width: 300px; height: 300px; right: -120px; top: -120px; border-radius: 50%; background: radial-gradient(circle, var(--dc, var(--cyan)), transparent 65%); opacity: 0.35; transition: background 0.5s; filter: blur(10px); }
.sd-sym { position: relative; font-family: var(--latin); font-style: italic; font-size: 6rem; line-height: 1; color: #fff; text-shadow: 0 0 40px var(--dc, var(--cyan)); }
.sd-name { position: relative; font-size: 1.5rem; font-weight: 700; margin: 0.8rem 0 1rem; }
.sd-props { position: relative; display: grid; grid-template-columns: auto 1fr; gap: 0.3rem 1.2rem; font-size: 0.88rem; margin-bottom: 1rem; }
.sd-props dt { color: var(--muted); font-family: var(--mono); font-size: 0.75rem; letter-spacing: 0.1em; padding-top: 0.15em; }
.sd-props dd { color: var(--ink); }
.sd-desc { position: relative; color: var(--ink2); font-size: 0.93rem; }
.sm-detail.flash .sd-sym, .sm-detail.flash .sd-name { animation: flashIn 0.6s cubic-bezier(0.2, 0.8, 0.2, 1); }
@keyframes flashIn { from { opacity: 0; transform: translateX(-16px); filter: blur(6px); } to { opacity: 1; transform: none; filter: none; } }

/* ---------- Mystery ---------- */
@property --ang { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
.myst-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.6rem; max-width: 1200px; margin: 0 auto; }
.myst {
  position: relative; padding: 2.2rem 2rem; border-radius: 20px; background: rgba(10, 11, 24, 0.85); isolation: isolate;
  opacity: 0; transform: translateY(40px); transition: opacity 0.9s, transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.myst.in { opacity: 1; transform: none; }
.myst::before {
  content: ""; position: absolute; inset: -1px; border-radius: 21px; z-index: -1;
  background: conic-gradient(from var(--ang), transparent 0 60%, var(--cyan), var(--mag), var(--gold), transparent 95%);
  animation: spin 6s linear infinite; opacity: 0.25; transition: opacity 0.4s;
}
.myst::after { content: ""; position: absolute; inset: 1px; border-radius: 19px; background: rgba(10, 11, 24, 0.96); z-index: -1; }
.myst:hover::before { opacity: 1; }
@keyframes spin { to { --ang: 360deg; } }
.m-ico { font-family: var(--latin); font-variant-numeric: lining-nums; font-size: 2.6rem; color: var(--gold); line-height: 1.2; text-shadow: 0 0 20px rgba(244,185,66,0.5); }
.myst h3 { font-size: 1.25rem; margin: 0.8rem 0 0.6rem; }
.myst p { color: var(--ink2); font-size: 0.93rem; }

/* ---------- Epilogue ---------- */
#epilogue { min-height: 100vh; display: grid; place-items: center; text-align: center; overflow: hidden; padding-bottom: 6vh; }
#endCanvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.epi-content { position: relative; max-width: 1000px; }
.epi-line { font-size: clamp(1.4rem, 3vw, 2.3rem); font-weight: 500; line-height: 1.7; }
.epi-line:nth-child(2) { background: linear-gradient(90deg, var(--cyan), var(--vio), var(--mag)); -webkit-background-clip: text; background-clip: text; color: transparent; }
blockquote { margin: 4rem auto 1rem; font-family: var(--latin); font-style: italic; font-size: 1.7rem; color: var(--ink); max-width: 720px; line-height: 1.5; }
blockquote cite { display: block; margin-top: 1rem; font-family: var(--serif); font-style: normal; font-size: 0.9rem; color: var(--muted); }
.epi-small { color: var(--ink2); }
.reading { margin: 5rem auto 0; text-align: left; max-width: 620px; padding: 1.8rem 2.2rem; border-radius: 18px; border: 1px solid var(--line); background: rgba(255,255,255,0.03); backdrop-filter: blur(6px); }
.reading h4 { font-family: var(--mono); font-weight: 500; letter-spacing: 0.4em; font-size: 0.78rem; color: var(--cyan); margin-bottom: 0.8rem; }
.reading li { list-style: none; color: var(--ink2); font-size: 0.93rem; padding: 0.35rem 0; border-bottom: 1px dashed var(--line); }
.reading li::before { content: "✦"; color: var(--mag); margin-right: 0.7rem; font-size: 0.7rem; }
footer { position: absolute; bottom: 24px; left: 0; right: 0; text-align: center; font-size: 0.75rem; letter-spacing: 0.3em; color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .sm-layout { grid-template-columns: 1fr; justify-items: center; }
  .sm-detail { position: relative; top: 0; width: 100%; max-width: 640px; min-height: 0; }
}
@media (max-width: 900px) {
  #chapters { display: none; }
  .concept, .concept.wide { grid-template-columns: 1fr; min-height: 0; }
  .concept.reverse .concept-text { order: 0; }
  .tl-line { left: 12px; }
  .tl-item, .tl-item:nth-child(odd) { width: 100%; margin-left: 0; padding: 0 0 7vh 40px; }
  .tl-dot, .tl-item:nth-child(odd) .tl-dot { left: 5px; right: auto; }
  .myst-grid { grid-template-columns: 1fr; }
  .sm-grid { grid-template-columns: repeat(5, 17vw); grid-template-rows: repeat(4, 20vw); gap: 6px; }
  .p-card .ps { font-size: 1.6rem; } .p-card .pn, .p-card .pm, .p-card .pq { display: none; }
  .p-card.higgs .ps { font-size: 2.4rem; margin-top: 1rem; }
  .chart-foot { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 0.01ms !important; }
}