/* ==========================================================================
   thearthistory.org /learn/ — Swiss modernist / museum editorial
   Palette: purple = concept · lime = identification/active · orange = evidence/narrative · black = structure
   ========================================================================== */

:root {
  --purple: #753BFF;
  --lime: #C5F500;
  --orange: #FF8A00;
  --ink: #111111;
  --paper: #FFFFFF;
  --warm: #FAF8F4;
  --rule: #111111;
  --rule-soft: #DAD6CE;
  --muted: #5A5650;
  --ph: #EFECE6;

  --sans: "Helvetica Neue", Helvetica, Arial, Inter, "Noto Sans Thai", "Sukhumvit Set", "Thonburi", "Leelawadee UI", "Tahoma", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Georgia, "Times New Roman", "Noto Serif Thai", serif;

  --gutter: 24px;
  --side: 248px;
  --pad: clamp(16px, 3.2vw, 48px);
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--purple); }
button { font: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.1; font-weight: 700; }
p { margin: 0 0 1em; }
ul, ol { margin: 0; padding: 0; }

:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.on-dark :focus-visible, .purple :focus-visible { outline-color: var(--lime); }

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}
.skip {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  background: var(--ink); color: var(--paper); padding: 10px 14px; text-decoration: none;
}
.skip:focus { top: 8px; color: var(--paper); }

/* ---------- Shell ---------- */
.shell { display: grid; grid-template-columns: var(--side) minmax(0, 1fr); min-height: 100vh; }

.side {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  border-right: 1px solid var(--rule);
  padding: 28px 20px 24px;
  display: flex; flex-direction: column; gap: 28px;
  background: var(--paper);
}
.brand { text-decoration: none; display: block; }
.brand-mark {
  font-family: var(--serif); font-weight: 700; font-size: 22px; line-height: .95;
  letter-spacing: -.01em; text-transform: uppercase;
}
.brand-sub {
  margin-top: 10px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  display: inline-block; background: var(--lime); padding: 2px 6px;
}
.nav-toggle { display: none; }
.nav ol { list-style: none; counter-reset: nav; }
.nav li + li { border-top: 1px solid var(--rule-soft); }
.nav a {
  display: grid; grid-template-columns: 28px 1fr; align-items: baseline;
  padding: 9px 4px; text-decoration: none; font-size: 15px;
}
.nav a .n { font-size: 11px; color: var(--muted); font-variant-numeric: tabular-nums; }
.nav a .th { grid-column: 2; font-size: 12px; color: var(--muted); line-height: 1.3; }
.nav a:hover { background: var(--warm); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--ink); color: var(--paper); }
.nav a[aria-current="page"] .n, .nav a[aria-current="page"] .th { color: var(--lime); }
.nav .nav-sep { border-top: 1px solid var(--rule); margin-top: 8px; padding-top: 8px; }

.side-progress { margin-top: auto; border-top: 1px solid var(--rule); padding-top: 12px; font-size: 13px; }
.side-progress strong { font-size: 22px; font-variant-numeric: tabular-nums; display: block; line-height: 1.2; }
.meter { height: 6px; background: var(--rule-soft); margin-top: 8px; }
.meter > span { display: block; height: 100%; background: var(--lime); border-right: 2px solid var(--ink); width: 0; transition: width .3s ease; }

.main { min-width: 0; }
.wrap { padding: var(--pad); max-width: 1480px; }

/* ---------- Grid ---------- */
.g12 { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gutter); }

/* ---------- Page head ---------- */
.phead {
  display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--gutter);
  border-bottom: 2px solid var(--rule); padding-bottom: 24px; margin-bottom: 32px; align-items: end;
}
.phead .num {
  grid-column: 1 / span 2; font-family: var(--serif); font-size: clamp(56px, 7vw, 104px);
  line-height: .8; font-weight: 700; font-variant-numeric: tabular-nums;
}
.phead .titles { grid-column: 3 / span 7; }
.phead h1 {
  font-family: var(--serif); font-size: clamp(36px, 5.2vw, 76px); letter-spacing: -.02em;
  text-transform: uppercase; line-height: .95;
}
.phead .th-title { font-size: clamp(16px, 1.6vw, 20px); margin-top: 10px; }
.phead .aside { grid-column: 10 / span 3; font-size: 14px; color: var(--muted); }
.phead .aside .prog { color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }

.kicker { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; font-weight: 700; }
.caption { font-size: 13px; color: var(--muted); line-height: 1.45; }
.label { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; font-weight: 700; margin-bottom: 8px; display: block; }
.rule { border: 0; border-top: 1px solid var(--rule); margin: 24px 0; }
.rule-soft { border: 0; border-top: 1px solid var(--rule-soft); margin: 16px 0; }

/* Accent blocks */
.purple { background: var(--purple); color: #fff; }
.lime { background: var(--lime); color: var(--ink); }
.orange { background: var(--orange); color: var(--ink); }
.ink { background: var(--ink); color: var(--paper); }
.mark-purple { box-shadow: inset 4px 0 0 var(--purple); padding-left: 14px; }
.mark-orange { box-shadow: inset 4px 0 0 var(--orange); padding-left: 14px; }
.mark-lime { box-shadow: inset 4px 0 0 var(--lime); padding-left: 14px; }

/* ---------- Buttons / tabs ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; cursor: pointer;
  background: var(--ink); color: var(--paper); border: 2px solid var(--ink);
  padding: 10px 18px; text-decoration: none; font-weight: 700; font-size: 15px; border-radius: 0;
}
.btn:hover { background: var(--purple); border-color: var(--purple); color: #fff; }
.btn-line { background: transparent; color: var(--ink); }
.btn-line:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .45; cursor: not-allowed; background: var(--paper); color: var(--ink); }
.arrow::after { content: "→"; }

.tabs { display: flex; flex-wrap: wrap; border-bottom: 1px solid var(--rule); margin-bottom: 24px; }
.tab {
  background: none; border: 0; border-bottom: 4px solid transparent; cursor: pointer;
  padding: 10px 16px 8px; font-size: 15px; margin-bottom: -1px; white-space: nowrap;
}
.tab:hover { background: var(--warm); }
.tab[aria-selected="true"] { border-bottom-color: var(--ink); background: var(--lime); font-weight: 700; }
.tab small { display: block; font-size: 11px; color: var(--muted); font-weight: 400; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--ink); background: var(--paper); padding: 3px 10px; font-size: 12px;
  letter-spacing: .06em; text-transform: uppercase; cursor: default;
}
button.chip { cursor: pointer; }
button.chip:hover { background: var(--warm); }
button.chip[aria-pressed="true"] { background: var(--purple); color: #fff; border-color: var(--purple); }

/* List navigation (museum index) */
.index-list { list-style: none; border-top: 1px solid var(--rule); }
.index-list li { border-bottom: 1px solid var(--rule-soft); }
.index-list button, .index-list a {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  display: grid; grid-template-columns: 30px 1fr; gap: 4px; padding: 10px 6px; text-decoration: none;
}
.index-list .n { font-size: 11px; color: var(--muted); padding-top: 4px; font-variant-numeric: tabular-nums; }
.index-list .t-en { font-weight: 700; display: block; line-height: 1.25; }
.index-list .t-th { font-size: 13px; color: var(--muted); display: block; }
.index-list button:not([aria-current="true"]):not([aria-selected="true"]):hover { background: var(--warm); }
.index-list [aria-current="true"], .index-list [aria-selected="true"] { background: var(--ink); color: var(--paper); }
.index-list [aria-current="true"] .t-th, .index-list [aria-current="true"] .n,
.index-list [aria-selected="true"] .t-th, .index-list [aria-selected="true"] .n { color: var(--lime); }
.index-list .seen::after { content: "●"; color: var(--lime); -webkit-text-stroke: 1px var(--ink); font-size: 10px; margin-left: 6px; }
.index-list .dim { opacity: .35; }

/* ---------- Figure / placeholder ---------- */
.fig { margin: 0; }
.fig-frame { position: relative; background: var(--ph); overflow: hidden; }
.fig-frame img { width: 100%; height: 100%; object-fit: cover; }
.ph {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 16px; color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
  background-image:
    linear-gradient(var(--rule-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule-soft) 1px, transparent 1px);
  background-size: 12.5% 12.5%;
}
.ph svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.ph span { position: relative; background: var(--ph); align-self: flex-start; padding: 2px 6px; }
.fig figcaption { padding-top: 8px; border-top: 1px solid var(--rule); margin-top: 8px; }
.fig .fig-no { font-weight: 700; color: var(--ink); margin-right: 6px; }

/* ---------- Footer ---------- */
.foot {
  border-top: 2px solid var(--rule); margin-top: 64px; padding: 24px var(--pad) 40px;
  display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); font-size: 13px;
}
.foot .credit { grid-column: 1 / span 6; }
.foot .prov { grid-column: 7 / span 6; color: var(--muted); }
.foot a { font-weight: 700; }

/* ---------- Status / error ---------- */
.status { padding: 16px; border: 1px dashed var(--ink); background: var(--warm); font-size: 14px; }
.conf-tag { font-size: 12px; color: var(--muted); margin-top: 12px; }
.conf-tag b { color: var(--ink); }

/* ==========================================================================
   HOME
   ========================================================================== */
.hero { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); border-bottom: 2px solid var(--rule); padding-bottom: 40px; }
.hero-text { grid-column: 1 / span 7; padding-top: 12px; }
.hero-lead { font-size: 18px; margin-bottom: 16px; }
.hero h1 {
  font-family: var(--serif); font-size: clamp(48px, 8.4vw, 132px); line-height: .86;
  letter-spacing: -.035em; text-transform: uppercase; margin-bottom: 24px;
}
.hero h1 em { font-style: normal; color: var(--purple); }
.hero .sub { font-size: clamp(18px, 1.8vw, 24px); margin-bottom: 8px; }
.hero .th-desc { font-size: 16px; max-width: 34em; margin-bottom: 24px; }
.hero-fig { grid-column: 8 / span 5; align-self: stretch; }
.method {
  display: grid; grid-template-columns: repeat(5, minmax(0,1fr)); border-bottom: 1px solid var(--rule);
  list-style: none; counter-reset: m;
}
.method li { padding: 16px 12px 16px 0; border-right: 1px solid var(--rule-soft); font-size: 13px; }
.method li:last-child { border-right: 0; }
.method b { display: block; font-size: clamp(14px, 1.4vw, 20px); letter-spacing: .04em; }
.method li::before { counter-increment: m; content: "0" counter(m); font-size: 11px; color: var(--muted); display: block; }

.modes { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: 0; margin-top: 40px; border-top: 2px solid var(--rule); }
.mode {
  grid-column: span 4; padding: 22px 24px 26px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  text-decoration: none; display: flex; flex-direction: column; min-height: 240px; position: relative;
}
.mode .mn { font-family: var(--serif); font-size: 44px; line-height: 1; font-weight: 700; }
.mode h2 { font-family: var(--serif); font-size: clamp(26px, 2.6vw, 38px); text-transform: uppercase; margin: 14px 0 8px; letter-spacing: -.01em; }
.mode p { font-size: 14px; margin: 0; max-width: 28em; }
.mode .go { margin-top: auto; padding-top: 18px; font-weight: 700; font-size: 14px; }
.mode .go::after { content: " →"; }
.mode.lime:hover, .mode.orange:hover { background: var(--ink); color: var(--paper); }
.mode.purple:hover { background: var(--ink); color: var(--lime); }
.mode.plain:hover { background: var(--warm); color: var(--ink); }
.mode.wide { grid-column: span 8; }
.mode.half { grid-column: span 6; }
.modes { clip-path: inset(0 1px 0 0); }
.mode.refs { gap: 0; }
.mode.refs a { text-decoration: none; display: block; padding: 10px 0; border-bottom: 1px solid var(--rule-soft); }
.mode.refs a:last-child { border-bottom: 0; }
.mode.refs h2 { font-size: clamp(22px, 2vw, 30px); margin: 0 0 4px; }
.mode.refs a:hover h2 { color: var(--purple); }
.mode.refs:hover { background: var(--paper); }
.continue { margin-top: 32px; display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-size: 15px; }

/* ==========================================================================
   READ THE GOD
   ========================================================================== */
.gods-layout { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); }
.gods-nav { grid-column: 1 / span 3; }
.gods-view { grid-column: 4 / span 5; }
.gods-info { grid-column: 9 / span 4; }
.group-intro { font-size: 14px; margin-bottom: 14px; }
.role-filter { margin-bottom: 16px; }
.entity-title { font-family: var(--serif); font-size: clamp(32px, 3.4vw, 52px); letter-spacing: -.02em; }
.entity-th { font-size: 20px; margin: 4px 0 14px; }
.ffit { list-style: none; counter-reset: s; border-top: 2px solid var(--rule); margin-top: 18px; }
.ffit > li { border-bottom: 1px solid var(--rule-soft); padding: 14px 0; display: grid; grid-template-columns: 92px 1fr; gap: 12px; }
.ffit .step { font-size: 11px; letter-spacing: .14em; font-weight: 700; text-transform: uppercase; }
.ffit .step::before { counter-increment: s; content: "0" counter(s) " "; color: var(--muted); }
.ffit .step.c-purple { color: var(--purple); }
.attr-list { list-style: none; }
.attr-list li { padding: 4px 0; border-bottom: 1px dotted var(--rule-soft); }
.attr-list li:last-child { border-bottom: 0; }
.attr-list i { font-style: italic; }
.attr-list .note { color: var(--muted); font-size: 13px; }

/* ==========================================================================
   READ THE IMAGE
   ========================================================================== */
.id-layout { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); }
.id-cats { grid-column: 1 / span 3; }
.id-stage { grid-column: 4 / span 5; }
.id-panel { grid-column: 9 / span 4; }
.cat-list button { grid-template-columns: 30px 1fr 20px; }
.cat-list .tick { font-size: 12px; text-align: right; }
.cat-list button[data-seen="true"] .tick::before { content: "✓"; }
.hotspot {
  position: absolute; transform: translate(-50%, -50%); width: 30px; height: 30px; border-radius: 50%;
  background: var(--orange); border: 2px solid var(--ink); color: var(--ink); font-size: 13px; font-weight: 700;
  display: grid; place-items: center; cursor: default;
}
.hotspot .hs-label {
  position: absolute; left: 34px; top: 50%; transform: translateY(-50%); white-space: nowrap;
  background: var(--ink); color: var(--paper); padding: 2px 8px; font-size: 12px; font-weight: 400;
}
.hotspot.flip .hs-label { left: auto; right: 34px; }
.obs-box { margin-top: 16px; min-height: 92px; }
.obs-box h3 { font-size: 18px; margin-bottom: 6px; }
.choice-list { list-style: none; border-top: 1px solid var(--rule); margin: 8px 0 16px; }
.choice-list li { border-bottom: 1px solid var(--rule-soft); }
.choice-list label { display: flex; gap: 12px; align-items: center; padding: 10px 6px; cursor: pointer; }
.choice-list input { width: 18px; height: 18px; accent-color: var(--ink); }
.choice-list label:has(input:checked) { background: var(--lime); }
.result { margin-top: 20px; border-top: 2px solid var(--rule); padding-top: 14px; }
.conf-num { font-family: var(--serif); font-size: 56px; line-height: 1; font-weight: 700; font-variant-numeric: tabular-nums; }
.conf-bar { height: 12px; border: 1px solid var(--ink); margin: 8px 0 14px; }
.conf-bar span { display: block; height: 100%; background: var(--lime); width: 0; transition: width .5s ease; }
.conf-bar.low span { background: var(--orange); }
.ev-list { list-style: none; counter-reset: e; }
.ev-list li { padding: 6px 0 6px 34px; position: relative; border-bottom: 1px solid var(--rule-soft); }
.ev-list li::before {
  counter-increment: e; content: counter(e); position: absolute; left: 0; top: 7px; width: 22px; height: 22px;
  background: var(--orange); font-size: 12px; font-weight: 700; display: grid; place-items: center;
}
.ev-list li.unseen { color: var(--muted); }
.ev-list li.unseen::before { background: var(--ph); }
.case-nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }

/* ==========================================================================
   COMPARE
   ========================================================================== */
.presets { display: flex; flex-wrap: wrap; gap: 0; margin-bottom: 24px; border: 1px solid var(--rule); width: fit-content; max-width: 100%; }
.presets button { background: var(--paper); border: 0; border-right: 1px solid var(--rule); padding: 10px 16px; cursor: pointer; font-weight: 700; }
.presets button:last-child { border-right: 0; }
.presets button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.cmp-figs { display: grid; gap: var(--gutter); margin-bottom: 24px; }
.cmp-figs .who { font-family: var(--serif); font-size: clamp(26px, 3vw, 44px); font-weight: 700; text-transform: uppercase; letter-spacing: -.01em; }
.cmp-figs .who-th { font-size: 15px; margin-bottom: 10px; }
.cmp-vs { align-self: center; justify-self: center; font-family: var(--serif); font-size: 28px; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: 16px; }
.cmp-table th, .cmp-table td { text-align: left; padding: 14px 12px; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.cmp-table thead th { border-bottom: 2px solid var(--rule); font-size: 13px; letter-spacing: .1em; text-transform: uppercase; }
.cmp-table tbody th { width: 20%; font-weight: 700; background: var(--warm); font-size: 14px; }
.cmp-table td.na { color: var(--muted); }
.cmp-mobile { display: none; }
.toggle-row { display: flex; border: 1px solid var(--rule); margin-bottom: 14px; }
.toggle-row button { flex: 1; background: var(--paper); border: 0; border-right: 1px solid var(--rule); padding: 10px 6px; font-weight: 700; cursor: pointer; }
.toggle-row button:last-child { border-right: 0; }
.toggle-row button[aria-pressed="true"] { background: var(--lime); }
.dl-stack { margin: 0; }
.dl-stack div { padding: 12px 0; border-bottom: 1px solid var(--rule-soft); }
.dl-stack dt { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.dl-stack dd { margin: 4px 0 0; font-size: 17px; }

/* ==========================================================================
   STORY
   ========================================================================== */
.timeline { position: relative; margin-bottom: 32px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.timeline ol { list-style: none; display: grid; grid-template-columns: repeat(6, minmax(150px, 1fr)); border-top: 2px solid var(--rule); min-width: 900px; }
.timeline li { border-right: 1px solid var(--rule-soft); }
.timeline li:last-child { border-right: 0; }
.timeline button {
  width: 100%; height: 100%; text-align: left; background: var(--paper); border: 0; cursor: pointer; padding: 0 0 12px;
  display: flex; flex-direction: column; gap: 8px; position: relative;
}
.timeline button::before {
  content: ""; position: absolute; top: -8px; left: 0; width: 14px; height: 14px; background: var(--paper); border: 2px solid var(--ink);
}
.timeline .fig-frame { aspect-ratio: 4/3; }
.timeline .ord { font-size: 12px; font-weight: 700; padding: 0 10px; margin-top: 10px; }
.timeline .tt { font-weight: 700; padding: 0 10px; line-height: 1.2; }
.timeline .tt small { display: block; font-weight: 400; color: var(--muted); font-size: 13px; }
.timeline button:hover { background: var(--warm); }
.timeline button[aria-current="true"] { background: var(--orange); }
.timeline button[aria-current="true"]::before { background: var(--ink); }
.timeline button[aria-current="true"] small { color: var(--ink); }
.timeline .done::after { content: "✓ อ่านแล้ว"; font-size: 11px; padding: 0 10px; color: var(--muted); }
.timeline button[aria-current="true"].done::after { color: var(--ink); }
.story-layout { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); }
.story-fig { grid-column: 1 / span 6; }
.story-text { grid-column: 7 / span 6; }
.story-text h2 { font-family: var(--serif); font-size: clamp(30px, 3.4vw, 52px); text-transform: uppercase; letter-spacing: -.02em; }
.story-text .th { font-size: 20px; margin: 4px 0 18px; }
.meaning-block { padding: 18px 20px; margin: 18px 0; font-size: 17px; }
.meta-grid { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--rule); }
.meta-grid > div { padding: 12px 0; border-bottom: 1px solid var(--rule-soft); }
.meta-grid > div:nth-child(odd) { padding-right: 12px; border-right: 1px solid var(--rule-soft); }
.meta-grid > div:nth-child(even) { padding-left: 12px; }
.story-pager { display: flex; justify-content: space-between; gap: 12px; margin-top: 24px; flex-wrap: wrap; }

/* ==========================================================================
   SYSTEM
   ========================================================================== */
.sys-layout { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); }
.sys-map { grid-column: 1 / span 7; }
.sys-detail { grid-column: 8 / span 5; }
.map-scroll { overflow: auto; border: 1px solid var(--rule); background: var(--paper); -webkit-overflow-scrolling: touch; }
.map-scroll svg { display: block; width: 100%; min-width: 460px; height: auto; }
.sys-svg .link { stroke: var(--ink); stroke-width: 1.5; }
.sys-svg .ring { fill: none; stroke: var(--ink); stroke-width: 1; stroke-dasharray: 4 5; }
.sys-svg .node { cursor: pointer; }
.sys-svg .node circle.dot { stroke: var(--ink); stroke-width: 2; }
.sys-svg .node .hit { fill: transparent; }
.sys-svg .node text { font-family: var(--sans); fill: var(--ink); }
.sys-svg .node .nm { font-size: 17px; font-weight: 700; }
.sys-svg .node .sub { font-size: 13px; fill: var(--muted); }
.sys-svg .node .dir { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.sys-svg .node:hover .frame, .sys-svg .node:focus .frame { stroke: var(--purple); stroke-width: 3; }
.sys-svg .node:focus { outline: none; }
.sys-svg .node:focus-visible .frame { stroke: var(--ink); stroke-width: 4; }
.sys-svg .node .frame { fill: var(--paper); stroke: var(--ink); stroke-width: 1; }
.sys-svg .node[aria-pressed="true"] .frame { fill: var(--purple); stroke: var(--purple); }
.sys-svg .node[aria-pressed="true"] text { fill: #fff; }
.sys-svg .center-label { font-family: var(--serif); font-size: 22px; font-weight: 700; letter-spacing: .06em; }
.layer-row { display: flex; flex-wrap: wrap; border: 1px solid var(--rule); margin-bottom: 14px; }
.layer-row button { flex: 1 1 auto; background: var(--paper); border: 0; border-right: 1px solid var(--rule); padding: 10px 12px; cursor: pointer; text-align: left; }
.layer-row button:last-child { border-right: 0; }
.layer-row button small { display: block; font-size: 12px; color: var(--muted); }
.layer-row button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.layer-row button[aria-pressed="true"] small { color: var(--lime); }
.prop-table { width: 100%; border-collapse: collapse; }
.prop-table th, .prop-table td { text-align: left; vertical-align: top; padding: 10px 0; border-bottom: 1px solid var(--rule-soft); }
.prop-table th { width: 38%; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); font-weight: 700; padding-right: 10px; }
.swatch { display: inline-block; width: 14px; height: 14px; border: 1px solid var(--ink); vertical-align: -2px; margin-right: 6px; }
.kaya-list { list-style: none; border-top: 2px solid var(--rule); margin-top: 24px; }
.kaya-list li { display: grid; grid-template-columns: 140px 1fr; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--rule-soft); font-size: 14px; }
.kaya-list li.on { background: var(--lime); }
.kaya-list b { padding-left: 6px; }

/* ==========================================================================
   BODHISATTVA LAB
   ========================================================================== */
.bo-layout { display: grid; grid-template-columns: repeat(12, minmax(0,1fr)); gap: var(--gutter); }
.bo-list { grid-column: 1 / span 3; }
.bo-main { grid-column: 4 / span 9; }
.bo-head { display: grid; grid-template-columns: repeat(9, minmax(0,1fr)); gap: var(--gutter); }
.bo-head .fig { grid-column: 1 / span 4; }
.bo-head .bo-name { grid-column: 5 / span 5; }
.bo-name h2 { font-family: var(--serif); font-size: clamp(34px, 4vw, 64px); letter-spacing: -.02em; }
.bo-name .th { font-size: 22px; margin: 4px 0 20px; }
.bo-concept { padding: 20px; font-family: var(--serif); font-size: clamp(26px, 2.6vw, 40px); line-height: 1.1; }
.bo-concept small { display: block; font-family: var(--sans); font-size: 16px; margin-top: 6px; }
.flow { list-style: none; display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); border-top: 2px solid var(--rule); margin-top: 28px; }
.flow > li { padding: 14px 16px 18px 0; border-right: 1px solid var(--rule-soft); position: relative; }
.flow > li + li { padding-left: 16px; }
.flow > li:last-child { border-right: 0; }
.flow > li:not(:last-child)::after {
  content: "→"; position: absolute; right: -10px; top: 10px; background: var(--paper); font-weight: 700; padding: 0 2px;
}
.flow .label { color: var(--muted); }
.flow .c1 .label { color: var(--purple); }

/* ==========================================================================
   SOURCES / GLOSSARY
   ========================================================================== */
.src-list { list-style: none; border-top: 2px solid var(--rule); }
.src-row {
  display: grid; grid-template-columns: 80px minmax(0,4fr) minmax(0,3fr) minmax(0,2fr); gap: var(--gutter);
  padding: 20px 0; border-bottom: 1px solid var(--rule); align-items: start;
}
.src-row .ln { font-family: var(--serif); font-size: 48px; line-height: .9; font-weight: 700; }
.src-row h2 { font-size: 22px; }
.src-row .th { font-size: 15px; margin-top: 2px; }
.src-row dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: 14px; }
.src-row dt { color: var(--muted); }
.src-row dd { margin: 0; }
.src-row .acts { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.src-label { display: inline-block; background: var(--ink); color: var(--paper); padding: 4px 10px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 20px; }

.gl-tools { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: var(--gutter); margin-bottom: 20px; align-items: end; }
.gl-tools input[type=search] {
  width: 100%; font: inherit; font-size: 18px; border: 0; border-bottom: 2px solid var(--ink); padding: 10px 2px; background: transparent; border-radius: 0;
}
.gl-list { list-style: none; border-top: 2px solid var(--rule); }
.gl-item { display: grid; grid-template-columns: minmax(0,3fr) minmax(0,6fr) minmax(0,3fr); gap: var(--gutter); padding: 14px 0; border-bottom: 1px solid var(--rule-soft); }
.gl-item:target { background: var(--lime); }
.gl-item .term { font-weight: 700; font-size: 18px; }
.gl-item .term small { display: block; font-weight: 400; font-size: 14px; }
.gl-count { font-size: 13px; color: var(--muted); }
.mod-links { display: flex; flex-wrap: wrap; gap: 6px; }
.mod-links a { font-size: 12px; border: 1px solid var(--ink); padding: 2px 8px; text-decoration: none; text-transform: uppercase; letter-spacing: .06em; }
.mod-links a:hover { background: var(--ink); color: var(--paper); }

/* ==========================================================================
   RESPONSIVE — tablet (8 col)
   ========================================================================== */
@media (max-width: 1100px) {
  :root { --gutter: 20px; }
  .shell { grid-template-columns: minmax(0, 1fr); }
  .side {
    position: sticky; top: 0; z-index: 20; height: auto; overflow: visible; flex-direction: row; flex-wrap: wrap;
    align-items: center; justify-content: space-between; padding: 12px var(--pad); gap: 12px; border-right: 0; border-bottom: 2px solid var(--rule);
  }
  .brand-mark { font-size: 17px; }
  .brand-sub { margin-top: 4px; }
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 8px; background: var(--paper); border: 2px solid var(--ink);
    padding: 8px 14px; font-weight: 700; cursor: pointer;
  }
  .nav-toggle[aria-expanded="true"] { background: var(--ink); color: var(--paper); }
  .nav { display: none; width: 100%; }
  .nav.open { display: block; }
  .nav ol { display: grid; grid-template-columns: 1fr 1fr; column-gap: 24px; }
  .nav li + li { border-top: 0; }
  .nav li { border-bottom: 1px solid var(--rule-soft); }
  .nav .nav-sep { border-top: 0; margin-top: 0; padding-top: 0; }
  .side-progress { display: none; }

  .g12, .phead, .hero, .gods-layout, .id-layout, .story-layout, .sys-layout, .bo-layout, .foot, .modes {
    grid-template-columns: repeat(8, minmax(0,1fr));
  }
  .phead .num { grid-column: 1 / span 2; }
  .phead .titles { grid-column: 3 / span 6; }
  .phead .aside { grid-column: 3 / span 6; }
  .hero-text { grid-column: 1 / span 8; }
  .hero-fig { grid-column: 1 / span 8; }
  .hero-fig .fig-frame { aspect-ratio: 16/9 !important; }
  .mode, .mode.wide, .mode.half { grid-column: span 4; }
  .mode.refs { grid-column: span 8; }

  .gods-nav { grid-column: 1 / span 3; }
  .gods-view { grid-column: 4 / span 5; }
  .gods-info { grid-column: 1 / span 8; }
  .id-cats { grid-column: 1 / span 3; }
  .id-stage { grid-column: 4 / span 5; }
  .id-panel { grid-column: 1 / span 8; }
  .story-fig { grid-column: 1 / span 8; }
  .story-text { grid-column: 1 / span 8; }
  .sys-map, .sys-detail { grid-column: 1 / span 8; }
  .bo-list { grid-column: 1 / span 8; }
  .bo-main { grid-column: 1 / span 8; }
  .bo-list .index-list { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); }
  .bo-head { grid-template-columns: repeat(8, minmax(0,1fr)); }
  .bo-head .fig { grid-column: 1 / span 3; }
  .bo-head .bo-name { grid-column: 4 / span 5; }
  .foot .credit, .foot .prov { grid-column: span 4; }
  .src-row { grid-template-columns: 64px minmax(0,1fr) minmax(0,1fr); }
  .src-row .acts { grid-column: 2 / span 2; flex-direction: row; flex-wrap: wrap; }
}

/* ==========================================================================
   RESPONSIVE — mobile (single column)
   ========================================================================== */
@media (max-width: 680px) {
  :root { --gutter: 16px; --pad: 16px; }
  body { font-size: 16px; }
  .nav ol { grid-template-columns: 1fr; }
  .g12, .phead, .hero, .gods-layout, .id-layout, .story-layout, .sys-layout, .bo-layout, .foot, .modes, .bo-head {
    grid-template-columns: minmax(0, 1fr);
  }
  .phead > *, .hero > *, .gods-layout > *, .id-layout > *, .story-layout > *, .sys-layout > *,
  .bo-layout > *, .foot > *, .bo-head > * { grid-column: 1 / -1 !important; }
  .phead .num { font-size: 56px; }
  .method { grid-template-columns: 1fr 1fr; }
  .method li { border-bottom: 1px solid var(--rule-soft); padding-left: 0; }
  .method li:nth-child(2n) { border-right: 0; padding-left: 12px; }
  .mode, .mode.wide, .mode.half { grid-column: 1 / -1; min-height: 0; }
  .tabs { flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .gods-nav .index-list { max-height: 260px; overflow-y: auto; }
  .ffit > li { grid-template-columns: 1fr; gap: 4px; }
  .cat-list { display: grid; grid-template-columns: 1fr 1fr; }
  .cat-list li { border-right: 1px solid var(--rule-soft); }
  .hotspot .hs-label { font-size: 11px; }
  .cmp-desktop { display: none; }
  .cmp-mobile { display: block; }
  .cmp-figs { grid-template-columns: 1fr !important; }
  .cmp-figs .cmp-vs { display: none; }
  .cmp-figs .cmp-col:not(.active) { display: none; }
  .presets { width: 100%; }
  .presets button { flex: 1 1 100%; border-right: 0; border-bottom: 1px solid var(--rule); text-align: left; }
  .presets button:last-child { border-bottom: 0; }
  .meta-grid { grid-template-columns: 1fr; }
  .meta-grid > div:nth-child(odd) { border-right: 0; padding-right: 0; }
  .meta-grid > div:nth-child(even) { padding-left: 0; }
  .flow { grid-template-columns: 1fr; }
  .flow > li { border-right: 0; border-bottom: 1px solid var(--rule-soft); padding-left: 0 !important; }
  .flow > li:not(:last-child)::after { content: "↓"; right: 0; top: auto; bottom: -12px; }
  .bo-list .index-list { grid-template-columns: 1fr 1fr; }
  .src-row { grid-template-columns: 48px minmax(0,1fr); }
  .src-row > :nth-child(3), .src-row .acts { grid-column: 2; }
  .src-row .ln { font-size: 36px; }
  .gl-tools, .gl-item { grid-template-columns: 1fr; gap: 6px; }
  .kaya-list li { grid-template-columns: 1fr; gap: 2px; }
  .layer-row button { flex: 1 1 100%; border-right: 0; border-bottom: 1px solid var(--rule); }
  .layer-row button:last-child { border-bottom: 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}

@media print {
  .side, .foot, .nav-toggle { display: none; }
  .shell { display: block; }
}

/* Structured Source Explorer */
.source-toolbar{display:flex;gap:.7rem;align-items:end;flex-wrap:wrap;border-top:1px solid #111;border-bottom:1px solid #ddd;padding:1rem 0;margin:1rem 0 2rem}.source-toolbar label{display:grid;gap:.25rem;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em}.source-toolbar select,.source-toolbar button{background:#fff;border:1px solid #111;padding:.65rem .8rem;font:inherit}.source-reading{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(280px,.95fr);gap:3rem;align-items:start}.source-text{font-size:1rem;line-height:1.7}.source-text p{margin:0 0 .8rem}.source-visuals{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;position:sticky;top:1rem}.source-visuals figure{margin:0;border-top:3px solid #111;padding-top:.5rem}.source-visuals img{display:block;width:100%;height:auto;background:#eee}.source-visuals figcaption{font-size:.7rem;margin-top:.35rem;color:#666}.src-row .acts .btn.source-explore{background:#b9ff37;color:#111;border-color:#111}@media(max-width:850px){.source-reading{grid-template-columns:1fr}.source-visuals{position:static;grid-template-columns:1fr 1fr}}@media(max-width:520px){.source-visuals{grid-template-columns:1fr}.source-toolbar{align-items:stretch}.source-toolbar label,.source-toolbar select,.source-toolbar button{width:100%}}

/* ---------- Regional Art ---------- */
.region-layout{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:28px 20px;align-items:start}
.region-intro{grid-column:1/span 4;border-top:4px solid var(--ink);padding-top:16px;position:sticky;top:24px}
.region-intro h2{font-family:var(--serif);font-size:clamp(44px,5vw,74px);line-height:.9;margin:8px 0 20px;text-transform:uppercase}
.region-th{font-size:18px;line-height:1.6}
.region-periods{grid-column:5/span 8}
.period-list{list-style:none;border-top:1px solid var(--rule);margin:8px 0 0;padding:0}
.period-list li{display:grid;grid-template-columns:48px 1fr;gap:14px;padding:16px 0;border-bottom:1px solid var(--rule-soft)}
.period-list .n{font-family:var(--serif);font-size:28px;color:var(--muted)}
.period-list strong{font-size:20px;display:block}
.period-list small{display:block;color:var(--muted);margin-top:2px}
.period-list p{margin:8px 0 6px;max-width:62em}
.chip-static{display:inline-block;border:1px solid var(--rule);padding:3px 8px;margin:2px 4px 2px 0;font-size:11px;text-transform:uppercase;letter-spacing:.04em}
.region-axes{grid-column:1/-1;border-top:2px solid var(--rule);padding-top:12px}
.axis-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--rule);margin-top:8px}
.axis-card{padding:18px;border-right:1px solid var(--rule);min-height:160px}
.axis-card:last-child{border-right:0}.axis-card h3{font-family:var(--serif);font-size:25px;margin:8px 0}.axis-card p{margin:0}
.region-gallery{grid-column:1/-1;border-top:2px solid var(--rule);padding-top:12px}
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:10px}.gallery-grid .fig{margin:0}
@media(max-width:980px){.region-intro{grid-column:1/span 3}.region-periods{grid-column:4/span 5}.axis-grid,.gallery-grid{grid-template-columns:1fr 1fr}.axis-card:last-child{grid-column:1/-1;border-top:1px solid var(--rule)}}
@media(max-width:680px){.region-layout{display:block}.region-intro{position:static;margin-bottom:28px}.region-periods,.region-axes,.region-gallery{margin-top:28px}.axis-grid,.gallery-grid{grid-template-columns:1fr}.axis-card,.axis-card:last-child{border-right:0;border-bottom:1px solid var(--rule)}.period-list li{grid-template-columns:38px 1fr}}