:root {
  --paper: #f3eee4;
  --paper-deep: #e9dfcf;
  --surface: rgba(255, 252, 246, .92);
  --surface-solid: #fffaf2;
  --ink: #211d18;
  --ink-soft: #51483e;
  --muted: #7b7166;
  --gold: #9b7847;
  --gold-soft: #d9c5a1;
  --cinnabar: #9e4033;
  --cinnabar-soft: #f1dfda;
  --line: rgba(81, 64, 43, .18);
  --line-strong: rgba(81, 64, 43, .32);
  --blue-grey: #5c6a72;
  --danger: #9c2d24;
  --success: #2f6546;
  --shadow: 0 16px 44px rgba(66, 47, 25, .08);
  --serif: "Songti TC", "Songti SC", "Noto Serif TC", "PMingLiU", serif;
  --sans: -apple-system, BlinkMacSystemFont, "PingFang TC", "PingFang SC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 0%, rgba(255,255,255,.92), transparent 28%),
    radial-gradient(circle at 94% 30%, rgba(190,155,102,.10), transparent 25%),
    linear-gradient(180deg, #f8f4ec 0%, var(--paper) 55%, #eee6da 100%);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .11;
  background-image:
    linear-gradient(90deg, rgba(87,68,45,.06) 1px, transparent 1px),
    linear-gradient(rgba(87,68,45,.045) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: linear-gradient(to bottom, #000, transparent 75%);
}
main { position: relative; max-width: 1240px; margin: 0 auto; padding: 32px 22px 64px; }

.page-header {
  position: relative;
  margin: 0 0 22px;
  padding: 4px 2px 18px;
  border-bottom: 1px solid var(--line);
}
.page-header::after {
  content: "易";
  position: absolute;
  right: 10px;
  top: -20px;
  font: 600 92px/1 var(--serif);
  color: rgba(139,101,56,.055);
  pointer-events: none;
}
.page-header h1 {
  margin: 4px 0 8px;
  font: 650 clamp(2rem, 4vw, 2.85rem)/1.15 var(--serif);
  letter-spacing: .08em;
}
.page-header p { max-width: 780px; margin: 0; color: var(--muted); }
.eyebrow, .result-eyebrow {
  color: var(--cinnabar) !important;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .16em;
  text-transform: uppercase;
}

form, .result {
  background: rgba(255,252,246,.78);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
}
fieldset {
  border: 1px solid var(--line);
  border-radius: 13px;
  margin: 0 0 18px;
  padding: 15px;
  background: rgba(255,255,255,.32);
}
legend {
  padding: 0 8px;
  color: var(--ink-soft);
  font: 650 .95rem/1.2 var(--serif);
  letter-spacing: .04em;
}
.section-heading { margin: 25px 0 12px; font: 650 1.12rem/1.2 var(--serif); }

.grid, .pillars, .moving-lines, .manual-lines, .mode-picker { display: grid; gap: 10px; }
.compact { grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.moving-lines { grid-template-columns: repeat(6, minmax(86px, 1fr)); margin-top: 8px; }
.manual-lines { grid-template-columns: repeat(6, minmax(112px, 1fr)); }
.mode-picker { grid-template-columns: repeat(5, minmax(112px, 1fr)); }

.mode-picker label {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255,252,246,.7);
  cursor: pointer;
  transition: .18s ease;
}
.mode-picker label:hover { border-color: var(--gold-soft); transform: translateY(-1px); }
.mode-helper { margin: 0 0 12px; color: var(--ink-soft); font-size: .88rem; }
.mode-picker label.beginner-recommended { background: #f1ebdc; border-color: #c9b88d; }
.mode-name { display: grid; gap: 2px; }
.beginner-badge { width: fit-content; padding: 1px 6px; border-radius: 5px; background: #e8ddc4; color: #604b28; font-size: .69rem; font-weight: 600; }
.mode-picker label:has(input:checked) {
  border-color: #9e4033;
  background: #f2dfd6;
  color: #6f2f27;
  box-shadow: inset 0 0 0 1px rgba(158,64,51,.32);
  font-weight: 750;
}
.mode-picker input, .inline-choice input, .inline-options input, .moving-lines input { width: auto; margin: 0 7px 0 0; }
.specified-moving { grid-column: 1 / -1; }
.pillars { grid-template-columns: repeat(4, minmax(145px, 1fr)); }
.pillar { display: grid; gap: 7px; grid-template-columns: 1fr 1fr; }
.pillar strong { grid-column: 1 / -1; color: var(--ink-soft); }
label { display: grid; gap: 6px; font-weight: 650; color: var(--ink-soft); }
.moving-lines label, .inline-choice, .inline-options label { display: flex; align-items: center; font-weight: 520; }
.inline-options { display: flex; gap: 18px; margin-bottom: 14px; }

select, input, button { font: inherit; }
select, input {
  width: 100%;
  min-height: 42px;
  padding: 8px 10px;
  color: var(--ink);
  background: rgba(255,253,248,.96);
  border: 1px solid rgba(93,78,61,.34);
  border-radius: 9px;
}
select[name="gua_gua_s"] option, select[name="gua_gua_x"] option {
  padding: 6px 10px;
}
select:focus-visible, input:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid rgba(158,64,51,.18);
  outline-offset: 2px;
}
[aria-invalid="true"] { border-color: var(--danger) !important; }
.field-error { margin: 6px 0 0; color: var(--danger); font-size: .9rem; font-weight: 700; }

.context-panel {
  margin: 14px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,252,246,.62);
}
.context-panel summary { padding: 13px 15px; cursor: pointer; font-weight: 750; color: var(--ink-soft); }
.context-panel.context-required { border-color: rgba(158,64,51,.42); }
.context-body { padding: 4px 15px 15px; display: grid; gap: 12px; }
.requirement { margin-left: 5px; padding: 2px 7px; border-radius: 999px; background: #e8e1d6; color: var(--muted); font-size: .72rem; }
.requirement-required { background: var(--cinnabar-soft); color: #7f3028; }
.hint, .sequence { color: var(--muted); font-weight: 400; }
.hint { margin: 2px 0 10px; font-size: .9rem; }
.calendar-preview { border-top: 1px solid var(--line); padding-top: 12px; }

.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
button {
  min-height: 42px;
  padding: 8px 16px;
  border: 1px solid #2e2923;
  border-radius: 10px;
  background: linear-gradient(145deg, #37312a, #29251f);
  color: #f9f0df;
  font-weight: 750;
  cursor: pointer;
  transition: .16s ease;
}
button:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 7px 18px rgba(58,42,25,.12); }
button.secondary { background: #fffaf2; color: #514235; border-color: var(--gold); }
button.quiet { border-color: var(--line-strong); background: transparent; color: var(--muted); }
button:disabled { cursor: wait; opacity: .62; }

.status { margin: 16px 0; padding: 12px 14px; border-radius: 10px; font-weight: 700; }
.status-error { border: 1px solid #d99b94; background: #fbefec; color: #842e27; }
.status-success { border: 1px solid #a9c7b4; background: #eff7f1; color: var(--success); }

.result { margin-top: 18px; padding: 18px; }
.result > h2 { margin-top: 0; }

/* ----- Result hero ----- */
.reading-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  align-items: end;
  gap: 22px;
  margin-bottom: 16px;
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(255,252,246,.92), rgba(235,224,206,.54));
  overflow: hidden;
}
.reading-hero::after {
  content: "卦";
  position: absolute;
  right: 24px;
  top: -42px;
  color: rgba(155,120,71,.045);
  font: 700 126px/1 var(--serif);
  pointer-events: none;
}
.reading-hero-title { position: relative; z-index: 1; }
.reading-hero h2 {
  margin: 4px 0 0;
  font: 650 clamp(1.7rem,3.5vw,2.35rem)/1.2 var(--serif);
  letter-spacing: .04em;
}
.reading-hero-meta {
  position: relative;
  z-index: 1;
  display: grid;
  min-width: min(100%, 270px);
  gap: 8px;
}
.moving-line-summary {
  padding: 13px 14px;
  border: 1px solid rgba(158,64,51,.34);
  border-radius: 12px;
  background: rgba(255,250,243,.78);
  box-shadow: 0 7px 20px rgba(118,45,37,.07);
}
.moving-line-summary h3 {
  margin: 0 0 9px;
  color: #735147;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .14em;
}
.moving-line-summary-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.moving-line-summary-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 58px;
  padding: 7px 12px;
  border-radius: 999px;
  color: #fffaf1;
  background: var(--cinnabar);
  font: 700 1.03rem/1.1 var(--serif);
  letter-spacing: .08em;
  box-shadow: 0 5px 12px rgba(118,45,37,.15);
}
.moving-line-empty { margin: 0; color: var(--ink-soft); font: 650 .95rem/1.4 var(--serif); }
.reading-void { margin: 0 3px; color: var(--muted); font-size: .78rem; text-align: right; }
.reading-facts {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(88px,auto));
  gap: 7px;
}
.reading-fact {
  min-width: 90px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: rgba(255,255,255,.44);
}
.reading-fact span {
  display: block;
  color: var(--muted);
  font-size: .67rem;
  letter-spacing: .08em;
}
.reading-fact strong { display: block; margin-top: 2px; color: var(--ink-soft); font: 650 .92rem/1.3 var(--serif); }
.fact-moving { border-color: rgba(158,64,51,.28); background: rgba(158,64,51,.06); }
.fact-moving strong { color: var(--cinnabar); }

/* ----- Professional hexagram cards ----- */
.hexagram-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 14px;
}
.hexagram-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(255,252,246,.88);
  box-shadow: 0 8px 26px rgba(70,51,28,.045);
}
.primary-hexagram { border-top: 3px solid var(--cinnabar); }
.changed-hexagram { border-top: 3px solid var(--gold); }
.hexagram-card-head {
  display: grid;
  grid-template-columns: minmax(0,1fr) 188px;
  gap: 16px;
  align-items: center;
  padding: 16px 16px 14px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.36), rgba(239,229,211,.18));
}
.hexagram-title-group h3 {
  margin: 4px 0 8px;
  font: 650 1.65rem/1.18 var(--serif);
  letter-spacing: .06em;
}
.hexagram-role {
  color: var(--cinnabar);
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .14em;
}
.changed-hexagram .hexagram-role { color: var(--gold); }
.hexagram-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px;
  margin: 0;
}
.badge {
  display: inline-flex;
  padding: 3px 7px;
  border: 1px solid rgba(121,94,61,.24);
  border-radius: 999px;
  color: #6d5b44;
  background: rgba(233,220,195,.32);
  font-size: .72rem;
}
.sequence { margin-left: 3px; font-size: .75rem; }
.static-note { color: var(--muted); margin: 5px 0 0; }

/* ----- Big standard hexagram glyph ----- */
.hexagram-stack {
  display: grid;
  gap: 4px;
  min-width: 170px;
  padding: 9px 10px;
  border: 1px solid rgba(126,94,52,.18);
  border-radius: 11px;
  background: rgba(255,251,243,.72);
}
.hexagram-stack-line {
  display: grid;
  grid-template-columns: 34px minmax(90px,1fr) 26px;
  align-items: center;
  gap: 7px;
  min-height: 19px;
}
.stack-position { color: #998c7c; font-size: .62rem; text-align: right; }
.stack-glyph { display: flex; align-items: center; gap: 5px; }
.stack-spacer { width: 24px; }
.hexagram-stack-line.is-moving { background: linear-gradient(90deg, transparent, rgba(158,64,51,.055), transparent); }

/* ----- Yao glyphs: actual lines, not text characters ----- */
.yao-glyph {
  display: inline-flex;
  align-items: center;
  width: 96px;
  height: 20px;
  vertical-align: middle;
}
.yao-segment {
  display: block;
  height: 7px;
  flex: 1 1 0;
  border-radius: 2px;
  background: #332c25;
  box-shadow: 0 1px 0 rgba(255,255,255,.18) inset;
}
.yao-full { width: 100%; flex-basis: 100%; }
.yao-gap { display: block; width: 14px; flex: 0 0 14px; }
.yao-compact { width: 102px; height: 15px; }
.yao-compact .yao-segment { height: 6px; }
.moving-marker {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  margin-left: 6px;
  border-radius: 50%;
  background: var(--cinnabar);
  color: #fff7ea;
  font-size: .68rem;
  font-weight: 800;
  box-shadow: 0 4px 10px rgba(118,45,37,.16);
}
.hexagram-stack .moving-marker { min-width: 19px; width: 19px; height: 19px; margin-left: 3px; font-size: .57rem; }

/* ----- Professional table ----- */
.table-scroll { overflow-x: auto; }
.professional-table-scroll { scrollbar-width: thin; }
.professional-reading-table {
  width: 100%;
  min-width: 610px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: auto;
}
.professional-reading-table th,
.professional-reading-table td {
  padding: 9px 8px;
  border-bottom: 1px solid rgba(93,75,52,.12);
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}
.professional-reading-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  color: #847666;
  background: rgba(248,242,232,.97);
  font-size: .71rem;
  font-weight: 750;
  letter-spacing: .04em;
}
.professional-reading-table tbody tr:last-child th,
.professional-reading-table tbody tr:last-child td { border-bottom: 0; }
.professional-reading-table tbody tr { transition: .13s ease; }
.professional-reading-table tbody tr:hover { background: rgba(218,198,162,.11); }
.professional-reading-table .line-position-cell {
  color: #736452;
  font: 650 .82rem/1.2 var(--serif);
}
.professional-reading-table .line-symbol {
  min-width: 138px;
  text-align: left;
  white-space: nowrap;
}
.professional-reading-table .spirit-cell { color: #6e6357; }
.professional-reading-table .stem-branch-cell,
.professional-reading-table .relation-cell { font-weight: 650; color: #443a30; }
.professional-reading-table .element-cell { color: #6c5c49; }
.professional-reading-table .hidden-spirit-cell { color: #958777; font-size: .78rem; }

.professional-reading-table tr.moving {
  background: linear-gradient(90deg, rgba(158,64,51,.075), rgba(158,64,51,.025));
}
.professional-reading-table tr.moving .line-position-cell { color: var(--cinnabar); }
.professional-reading-table tr.shi-line { box-shadow: inset 3px 0 0 var(--cinnabar); }
.professional-reading-table tr.ying-line { box-shadow: inset 3px 0 0 var(--gold); }

.shi-ying-tag {
  display: inline-grid;
  place-items: center;
  min-width: 24px;
  height: 24px;
  border-radius: 7px;
  font: 750 .72rem/1 var(--serif);
}
.shi-tag { color: #fff7ec; background: var(--cinnabar); }
.ying-tag { color: #5f4930; background: #e5d2ae; border: 1px solid #c6a774; }

/* ----- Technical / research information ----- */
.technical-details {
  margin-top: 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255,252,246,.55);
}
.technical-details > summary {
  padding: 13px 15px;
  cursor: pointer;
  color: #6f6253;
  font-weight: 750;
}
.technical-details-body { padding: 0 14px 14px; }
.generation, .rule-status-panel, .calendar-result-block, .unknown-fields {
  margin: 13px 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(241,234,222,.52);
}
.generation h3, .rule-status-panel h3, .calendar-result-block h3, .unknown-fields h3 { margin-top: 0; font-family: var(--serif); }
.calendar-result-block { border-color: rgba(77,113,83,.22); background: rgba(235,244,236,.62); }
.rule-status-panel { border-color: rgba(106,95,135,.20); background: rgba(243,240,248,.66); }
.unknown-fields, .professional-warning { border-color: rgba(158,64,51,.22); background: rgba(158,64,51,.045); }
.metadata-grid { display: grid; grid-template-columns: minmax(120px,.38fr) 1fr; gap: 5px 14px; margin: 8px 0 12px; }
.metadata-grid dt { color: var(--muted); font-weight: 650; }
.metadata-grid dd { margin: 0; overflow-wrap: anywhere; }
.calendar-metadata { grid-template-columns: repeat(4, minmax(100px, auto) minmax(130px, 1fr)); }
.policy-note { margin: 10px 0 0; color: var(--muted); font-size: .88rem; }
.rule-overall { display: flex; align-items: flex-start; gap: 8px; }
.rule-label { display: inline-block; padding: 2px 7px; border: 1px solid #a49b8e; border-radius: 999px; font: 700 .7rem/1.5 ui-monospace, monospace; white-space: nowrap; }
.rule-confirmed_yypan { border-color: #6caa87; background: #eff7f1; color: #2e6647; }
.rule-traditional_rule { border-color: #8ea7b6; background: #f1f6f8; color: #496979; }
.rule-lefu_implementation { border-color: #a997c1; background: #f5f1f8; color: #6c577c; }
.rule-unknown { border-color: #d3aa6b; background: #fbf4e8; color: #8b6331; }

code { overflow-wrap: anywhere; }
[hidden] { display: none !important; }

.question-context {
  margin: 16px 0;
  padding: 15px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: rgba(255,252,246,.62);
}
.question-context h2 { margin: 0; font: 650 1.15rem/1.3 var(--serif); }
.question-context-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.question-context textarea { width: 100%; resize: vertical; min-height: 74px; }

.result-topic-selector {
  margin-top: 16px;
  padding: 16px 17px;
  border: 1px solid rgba(122,91,50,.26);
  border-radius: 15px;
  background: rgba(255,252,246,.78);
}
.section-heading-row { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; }
.result-topic-selector h3 { margin: 0; font: 650 1.25rem/1.3 var(--serif); }
.takashima-area { overflow-anchor: none; }
.takashima-unavailable-topics { margin: 12px 0; color: var(--muted); }
.takashima-unavailable-topics button { margin: 6px 6px 0 0; }
.takashima-source-label { margin: 0; color: var(--muted); font-size: .76rem; }
.available-topic-intro { margin: 12px 0 9px; color: var(--ink-soft); font-weight: 700; }
.available-topic-list { display: flex; flex-wrap: wrap; gap: 8px; }
.topic-choice, .view-all-available {
  min-height: 0;
  padding: 8px 13px;
  border-color: rgba(122,91,50,.30);
  background: rgba(255,255,255,.56);
  color: #5e4930;
  box-shadow: none;
  font-size: .9rem;
}
.topic-choice:hover, .topic-choice:focus-visible, .view-all-available:hover, .view-all-available:focus-visible,
.topic-choice.is-selected, .view-all-available.is-selected { border-color: #84663e; background: #735f3d; color: #fffdf8; }
.view-all-available { margin-top: 12px; background: transparent; text-decoration: underline; text-underline-offset: 3px; }
.result-topic-zero { padding-bottom: 15px; }
.takashima-zero-state { margin: 12px 0 0; padding: 13px 14px; border-radius: 10px; background: rgba(225,207,174,.25); }

.takashima-section {
  margin-top: 16px;
  overflow: hidden;
  border: 1px solid rgba(122,91,50,.28);
  border-top: 3px solid #735f3d;
  border-radius: 15px;
  background: linear-gradient(145deg, rgba(255,252,246,.96), rgba(235,224,206,.46));
  box-shadow: 0 8px 26px rgba(70,51,28,.045);
}
.takashima-heading { padding: 16px 17px 13px; border-bottom: 1px solid var(--line); }
.takashima-heading h2 { margin: 0; font: 650 1.35rem/1.2 var(--serif); letter-spacing: .06em; }
.takashima-category { margin: 0; padding: 6px 10px; border: 1px solid rgba(122,91,50,.24); border-radius: 999px; color: #624e34; background: rgba(225,207,174,.28); font-weight: 700; white-space: nowrap; }
.takashima-question { margin: 14px 17px 0; color: var(--ink-soft); white-space: pre-wrap; }
.takashima-state { margin: 15px 17px; padding: 13px 14px; border-radius: 10px; background: rgba(225,207,174,.25); }
.takashima-topic-group + .takashima-topic-group { border-top: 1px solid var(--line); }
.takashima-topic-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 16px 17px 0; }
.takashima-topic-heading h3 { margin: 0; font: 650 1.16rem/1.3 var(--serif); }
.takashima-coverage { color: var(--muted); font-size: .76rem; white-space: nowrap; }
.takashima-coverage-note { margin: 8px 17px 0; color: #765c3d; font-size: .86rem; }
.takashima-line-list { display: grid; gap: 12px; padding: 15px 17px; }
.takashima-line-card { padding: 14px; border: 1px solid var(--line); border-left: 3px solid var(--cinnabar); border-radius: 11px; background: rgba(255,255,255,.42); }
.takashima-line-card h4 { margin: 0 0 10px; font: 700 1.05rem/1.2 var(--serif); }
.takashima-line-no-match { border-left-color: #9f927f; }
.takashima-topic-entry + .takashima-topic-entry { margin-top: 13px; padding-top: 13px; border-top: 1px dashed var(--line); }
.takashima-source-topic { margin: 0 0 8px; color: #6e6253; font-size: .78rem; }
.takashima-raw { margin: 0; color: #342d26; font: 500 1rem/1.8 var(--serif); white-space: pre-wrap; overflow-wrap: anywhere; }
.takashima-empty, .takashima-no-match { color: #7f533f; }
.takashima-research-link { display: inline-flex; margin-top: 12px; color: #75552f; font-size: .84rem; font-weight: 750; text-underline-offset: 3px; }
.takashima-safety-note { margin: 0 17px 14px; padding: 10px 12px; border-left: 3px solid #a78b5e; color: #6e6253; background: rgba(229,215,190,.24); font-size: .78rem; }
.takashima-quality-note { margin: -5px 17px 16px; color: var(--muted); font-size: .78rem; }

.takashima-line-group + .takashima-line-group { border-top: 1px solid var(--line); }
.takashima-line-group-heading {
  margin: 0;
  padding: 17px 17px 0;
  color: var(--cinnabar);
  font: 700 1.24rem/1.25 var(--serif);
  letter-spacing: .08em;
}
.takashima-line-topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 12px;
  padding: 14px 17px 17px;
}
.takashima-topic-card {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-top: 3px solid rgba(158,64,51,.72);
  border-radius: 11px;
  background: rgba(255,255,255,.42);
}
.takashima-topic-card h4 { margin: 0 0 10px; color: #5f4930; font: 700 1rem/1.25 var(--serif); }

.research-view { max-width: 900px; }
.research-entry {
  padding: clamp(18px, 4vw, 38px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255,252,246,.88);
  box-shadow: var(--shadow);
}
.research-nav { margin-bottom: 22px; }
.research-return-link { color: #75552f; font-weight: 750; text-underline-offset: 3px; }
.research-header { padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.research-header h1 { margin: 5px 0 12px; font: 650 clamp(1.8rem, 5vw, 2.7rem)/1.25 var(--serif); }
.research-topic { display: inline-flex; margin: 0; padding: 6px 11px; border-radius: 999px; background: rgba(225,207,174,.34); font-weight: 750; }
.research-content { padding: 26px 0; }
.research-content h2, .research-source h2 { font-family: var(--serif); }
.research-raw { font: 500 1.08rem/1.95 var(--serif); white-space: pre-wrap; overflow-wrap: anywhere; }
.research-empty { color: #7f533f; }
.research-source { padding: 17px; border-left: 3px solid #a78b5e; background: rgba(229,215,190,.24); }
.research-source h2 { margin-top: 0; }
.research-source p { margin: 7px 0; }
.research-source-label { color: #5f4930; font-weight: 700; }
.research-source-details { margin-top: 12px; color: var(--muted); font-size: .82rem; }
.research-source-details > summary { cursor: pointer; color: #6b5436; font-weight: 750; }
.research-source-details[open] > summary { margin-bottom: 9px; }
.research-quality-note { color: var(--muted); }

@media (max-width: 980px) {
  .reading-hero { grid-template-columns: 1fr; align-items: start; }
  .reading-hero-meta { width: 100%; }
  .reading-void { text-align: left; }
  .reading-facts { grid-template-columns: repeat(4, minmax(0,1fr)); }
  .hexagram-card-head { grid-template-columns: 1fr 178px; }
  .calendar-metadata { grid-template-columns: minmax(110px,.4fr) 1fr; }
}
@media (max-width: 760px) {
  main { padding: 18px 12px 38px; }
  form, .result { padding: 14px; border-radius: 14px; }
  .page-header::after { font-size: 72px; }
  .mode-picker, .pillars { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .moving-lines, .manual-lines { grid-template-columns: repeat(3, minmax(0,1fr)); }
  .reading-facts { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hexagram-grid { grid-template-columns: 1fr; }
  .hexagram-card-head { grid-template-columns: minmax(0,1fr) 170px; }
  .professional-reading-table { min-width: 650px; }
  .takashima-line-topic-list { grid-template-columns: 1fr; }
}
@media (max-width: 500px) {
  .page-header h1 { font-size: 2rem; }
  .page-header p { font-size: .9rem; }
  .mode-picker { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .pillars, .moving-lines, .manual-lines { grid-template-columns: 1fr; }
  .form-actions button { width: 100%; }
  .reading-hero { padding: 15px; }
  .moving-line-summary { padding: 12px; }
  .moving-line-summary-item { min-width: 54px; padding-inline: 10px; }
  .reading-facts { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hexagram-card-head {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .hexagram-stack { width: 100%; min-width: 0; }
  .hexagram-stack-line { grid-template-columns: 34px minmax(90px,1fr) 26px; }
  .yao-compact { width: min(118px, 100%); }
}

/* ================================================================
   V0.3A — dual visual overview + single professional comparison plate
   ================================================================ */
.reading-facts-compact {
  grid-template-columns: repeat(2, minmax(104px, auto));
}
.hexagram-grid { margin-bottom: 16px; }
.hexagram-overview-card .hexagram-card-head {
  min-height: 184px;
  border-bottom: 0;
}
.hexagram-overview-card .hexagram-stack {
  min-width: 188px;
}

.professional-plate {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(255,252,246,.90);
  box-shadow: 0 8px 26px rgba(70,51,28,.045);
}
.professional-plate-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 15px 17px 13px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(158,64,51,.035), transparent 40%, rgba(155,120,71,.04));
}
.professional-plate-heading h3 {
  margin: 2px 0 0;
  font: 650 1.22rem/1.25 var(--serif);
  letter-spacing: .05em;
}
.plate-note {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: .76rem;
  text-align: right;
}
.professional-plate-desktop { display: block; }
.professional-plate-mobile { display: none; }
.comparison-reading-table {
  width: 100%;
  min-width: 1010px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: auto;
}
.comparison-reading-table th,
.comparison-reading-table td {
  height: 48px;
  padding: 7px 8px;
  border-bottom: 1px solid rgba(93,75,52,.11);
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}
.comparison-reading-table thead th {
  color: #7d7062;
  background: rgba(248,242,232,.96);
  font-size: .70rem;
  font-weight: 760;
  letter-spacing: .04em;
}
.comparison-reading-table thead tr:first-child th {
  height: 34px;
  padding-block: 6px;
  border-bottom-color: rgba(93,75,52,.17);
  font: 700 .72rem/1 var(--serif);
  letter-spacing: .14em;
}
.comparison-reading-table .plate-main-head {
  color: #82382f;
  background: rgba(158,64,51,.065);
  border-left: 1px solid rgba(158,64,51,.12);
}
.comparison-reading-table .plate-changed-head {
  color: #796039;
  background: rgba(155,120,71,.075);
  border-left: 1px solid rgba(155,120,71,.15);
}
.comparison-reading-table .main-col {
  background: rgba(158,64,51,.016);
}
.comparison-reading-table .changed-col {
  background: rgba(155,120,71,.022);
}
.comparison-reading-table thead .main-col { background: rgba(158,64,51,.05); }
.comparison-reading-table thead .changed-col { background: rgba(155,120,71,.06); }
.comparison-reading-table tbody tr:last-child th,
.comparison-reading-table tbody tr:last-child td { border-bottom: 0; }
.comparison-reading-table tbody tr:hover > * { background-color: rgba(218,198,162,.10); }
.comparison-reading-table tr.moving {
  background: linear-gradient(90deg, rgba(158,64,51,.075), rgba(158,64,51,.020) 52%, rgba(155,120,71,.025));
}
.comparison-reading-table tr.moving .line-position-cell { color: var(--cinnabar); }
.comparison-reading-table tr.shi-line { box-shadow: inset 3px 0 0 var(--cinnabar); }
.comparison-reading-table tr.ying-line { box-shadow: inset 3px 0 0 var(--gold); }
.comparison-reading-table .line-position-cell {
  min-width: 58px;
  color: #706354;
  font: 650 .82rem/1.2 var(--serif);
}
.comparison-reading-table .spirit-cell { min-width: 58px; color: #665b50; }
.comparison-reading-table .hidden-spirit-cell {
  min-width: 94px;
  max-width: 120px;
  color: #998b7c;
  font-size: .72rem;
  overflow: hidden;
  text-overflow: ellipsis;
}
.comparison-reading-table .relation-cell {
  min-width: 64px;
  font-weight: 700;
  color: #40372f;
}
.comparison-reading-table .stem-branch-cell {
  min-width: 76px;
  color: #51483e;
  font-weight: 600;
}
.comparison-reading-table .line-symbol { min-width: 126px; text-align: center; }
.comparison-reading-table .shi-ying-cell { min-width: 50px; }
.comparison-reading-table .moving-cell,
.comparison-reading-table .moving-column-head,
.comparison-reading-table .plate-moving-head {
  width: 36px;
  min-width: 36px;
  padding-inline: 4px;
  border-left: 1px solid rgba(158,64,51,.16);
  border-right: 1px solid rgba(158,64,51,.16);
  background: rgba(158,64,51,.035);
}
.moving-cell .moving-marker { margin: 0; }
.plate-yao {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.plate-yao .yao-glyph { width: 82px; }
.plate-yao .moving-marker {
  min-width: 21px;
  width: 21px;
  height: 21px;
  margin-left: 5px;
  font-size: .60rem;
}
.plate-changed-yao .yao-segment { background: #4d4338; }
.plate-empty { color: #b3a797; }

/* Mobile keeps the moving field between the primary and changed cells. */
.mobile-plate-column-head {
  display: grid;
  grid-template-columns: minmax(0,1fr) 32px minmax(0,1fr);
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid rgba(93,75,52,.17);
  background: rgba(248,242,232,.96);
}
.mobile-plate-column-head span {
  color: var(--muted);
  font: 700 .72rem/1 var(--serif);
  letter-spacing: .14em;
}
.mobile-plate-column-head span:first-child { color: #82382f; }
.mobile-plate-column-head span:last-child { color: #796039; }
.mobile-plate-column-head .moving-column-head { text-align: center; color: var(--cinnabar); }
.mobile-line-card {
  padding: 11px 12px 12px;
  border-bottom: 1px solid var(--line);
}
.mobile-line-card:last-child { border-bottom: 0; }
.mobile-line-card.moving {
  background: linear-gradient(90deg, rgba(158,64,51,.065), rgba(158,64,51,.015));
}
.mobile-line-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}
.mobile-line-id { display: flex; align-items: baseline; gap: 9px; }
.mobile-line-id strong { font: 700 .94rem/1 var(--serif); color: #4d4034; }
.mobile-line-id span { color: var(--muted); font-size: .75rem; }
.mobile-line-pair {
  display: grid;
  grid-template-columns: minmax(0,1fr) 32px minmax(0,1fr);
  gap: 8px;
}
.mobile-moving-cell {
  display: grid;
  place-items: center;
  min-width: 0;
  border: 1px solid rgba(158,64,51,.18);
  border-radius: 7px;
  background: rgba(158,64,51,.035);
}
.mobile-line-panel {
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,.34);
}
.mobile-main { border-top: 2px solid rgba(158,64,51,.68); }
.mobile-changed { border-top: 2px solid rgba(155,120,71,.68); }
.mobile-panel-yao { min-height: 25px; display: flex; align-items: center; }
.mobile-panel-yao .plate-yao { width: 100%; min-width: 0; justify-content: flex-start; }
.mobile-panel-yao .yao-glyph { width: min(96px, 100%); }
.mobile-panel-data {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px 8px;
  margin-top: 4px;
}
.mobile-panel-data strong { color: #40372f; font-size: .88rem; }
.mobile-panel-data > span:not(.shi-ying-tag) { color: #746859; font-size: .75rem; }
.mobile-static-note { margin: 3px 0 0; color: #a49787; font-size: .72rem; }
.mobile-hidden-spirit {
  margin: 7px 2px 0;
  color: #928475;
  font-size: .70rem;
}

@media (max-width: 980px) {
  .comparison-reading-table { min-width: 960px; }
  .professional-plate-heading { align-items: start; }
}
@media (max-width: 760px) {
  .reading-facts-compact { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hexagram-overview-card .hexagram-card-head { min-height: 0; }
  .professional-plate-heading { display: block; }
  .plate-note { margin-top: 5px; text-align: left; }
  .professional-plate-desktop { display: none; }
  .professional-plate-mobile { display: block; }
  .question-context-grid { grid-template-columns: 1fr; }
  .takashima-topic-heading { align-items: flex-start; }
}
@media (max-width: 430px) {
  .mobile-line-panel { padding: 8px; }
}

@media (max-width: 720px) {
  .takashima-line-list { padding-inline: 12px; }
  .takashima-line-group-heading { padding-inline: 12px; }
  .takashima-line-topic-list { padding-inline: 12px; }
  .takashima-question { margin-inline: 12px; }
  .section-heading-row { align-items: flex-start; flex-direction: column; gap: 3px; }
  .available-topic-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topic-choice { width: 100%; }
}

/* Source-referenced editorial candidates, separate from Takashima topic readings. */
.plain-interpretation {
  margin-top: 22px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-top: 3px solid #a78b5e;
  border-radius: 15px;
  background: rgba(255,252,246,.85);
}
.plain-interpretation > h3 { margin: 0; font: 650 1.4rem/1.3 var(--serif); }
.plain-candidate-note { margin: 7px 0 18px; color: var(--muted); font-size: .78rem; }
.plain-component { min-width: 0; padding: 15px 0; border-top: 1px solid var(--line); }
.plain-component > h4 { margin: 0 0 8px; color: #735147; font: 700 1rem/1.4 var(--serif); }
.plain-summary { margin: 0; color: var(--ink); font-size: 1rem; line-height: 1.8; overflow-wrap: anywhere; }
.plain-main .plain-summary { font-size: 1.08rem; }
.plain-unavailable, .plain-context-note { margin: 6px 0; color: var(--muted); font-size: .85rem; line-height: 1.65; }
.plain-source-details { margin-top: 10px; color: var(--muted); font-size: .76rem; line-height: 1.65; }
.plain-source-details summary { cursor: pointer; width: fit-content; }
.plain-source-details p { margin: 7px 0 0; }

/* Owner UX: concepts remain separate from the unchanged interpretation corpus. */
.plain-reading-guide { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 22px; list-style: none; padding: 0; margin: 16px 0; }
.plain-reading-step { position: relative; min-width: 0; color: var(--ink-soft); font-size: .86rem; line-height: 1.65; }
.plain-reading-step strong { color: #71523b; }
.plain-reading-step p { margin: 4px 0 0; }
.plain-reading-step:not(:last-child)::after { content: "→"; position: absolute; right: -17px; top: 0; color: #8b714e; }
.plain-static-guide { margin: 10px 0; color: var(--ink-soft); font-size: .86rem; }
.topic-unavailable-status { margin: 5px 0; color: var(--muted); font-size: .78rem; }

/* Four contiguous desktop groups: shared identity | main | moving | changed. */
.comparison-reading-table .plate-fixed-head { background: #eae5dc; color: #62584b; }
.comparison-reading-table .plate-main-head { background: #e8d5ca; color: #693c2b; border-left: 2px solid #b6937c; }
.comparison-reading-table .plate-changed-head { background: #e6dec9; color: #625332; border-left: 0; }
.comparison-reading-table .plate-moving-head { color: #813b2e; font-weight: 800; }
.comparison-reading-table .main-col { background-color: #f7eee7; }
.comparison-reading-table .changed-col { background-color: #f7f3e8; }
.comparison-reading-table thead .main-col { background-color: #efe0d5; color: #654534; }
.comparison-reading-table thead .changed-col { background-color: #eee7d5; color: #625332; }
.comparison-reading-table .plate-main-start { border-left: 2px solid #b6937c; }
.comparison-reading-table .moving-cell,
.comparison-reading-table .moving-column-head,
.comparison-reading-table .plate-moving-head { background-color: #edcfc5; border-left: 2px solid #b77e68; border-right: 2px solid #b77e68; }
.comparison-reading-table tbody tr:hover > .main-col { background-color: #efe0d5; }
.comparison-reading-table tbody tr:hover > .changed-col { background-color: #eee7d5; }
.comparison-reading-table tbody tr:hover > .moving-cell { background-color: #e8bfb2; }
@media (max-width: 700px) {
  .plain-reading-guide { grid-template-columns: 1fr; gap: 12px; }
  .plain-reading-step:not(:last-child)::after { content: none; }
}
.result-export{padding:16px;margin-bottom:18px;border:1px solid #ded8cf;border-radius:12px;background:#fff}
.result-export>div{display:flex;gap:8px;flex-wrap:wrap}
.result-export button{min-height:44px;padding:10px 16px}
.result-export p{font-size:.85rem;line-height:1.6;margin:10px 0 0}
.result-export-status{color:#654536}
.result-export-dialog{width:min(820px,calc(100vw - 24px));max-height:90vh;overflow:auto;border:1px solid #aaa;border-radius:10px;padding:16px;background:white;color:#222}
.result-export-dialog::backdrop{background:rgba(0,0,0,.35)}
.result-export-dialog img{display:block;max-width:100%;height:auto;margin:12px auto 28px;border:1px solid #ddd}
.result-export-dialog a[download]{display:block;padding:12px 0}
.result-export-dialog textarea{width:100%;min-height:50vh;font:16px/1.7 sans-serif;margin-top:12px}

/* One reading, two presentation depths; no recalculation on disclosure. */
.reading-controls,.cast-time,.reading-auxiliary{margin:18px 0;padding:18px;border:1px solid var(--line);border-radius:12px;background:#fffcf6;min-width:0}
.reading-mode-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.reading-mode-row button{min-height:44px;padding:9px 20px;border:1px solid #947762;border-radius:8px;background:#fff;color:#493a2e}
.reading-mode-row button[aria-pressed="true"]{background:#755039;color:#fff}
.display-hint,.shensha-basis{font-size:.85rem;color:#695e51;line-height:1.6}
.line-assist-control{display:flex;align-items:center;gap:8px;min-height:44px;font-size:.95rem}
.line-assist-control input{width:20px;height:20px;flex:none}
.reading-controls details,.cast-time details,.reading-auxiliary details{margin-top:12px;padding:12px;border:1px solid #ddd3c5;border-radius:8px;background:#fffdf9}
.reading-controls summary,.cast-time summary,.reading-auxiliary summary{cursor:pointer;min-height:32px;font-weight:650;line-height:1.6}
.reading-controls p,.cast-time p,.reading-auxiliary p{line-height:1.75;overflow-wrap:anywhere}
.cast-time h3,.reading-auxiliary h3{margin:0 0 8px;font-size:1.1rem}
.cast-time-line{margin:7px 0}
.cast-pillars{font-size:1.05rem;font-weight:700;margin:10px 0;color:#573c2b}
.cast-pillars{display:flex;flex-wrap:wrap;gap:8px 14px}.cast-pillar{white-space:nowrap}
.cast-question{white-space:pre-wrap;margin:8px 0}
.body-values{white-space:pre-line;margin:6px 0}
.shensha-section{margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}
.shensha-category-label{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.shensha-category-label select,.result-export select{min-height:44px;border:1px solid #baab98;border-radius:7px;padding:8px;background:white;color:#302a25;max-width:100%;min-width:0;font:inherit}
.shensha-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:12px 0 0}
.shensha-item{min-width:0;padding:12px;border:1px solid #e4ddcf;border-radius:8px;background:#fff}
.shensha-item.is-relevant{border:2px solid #9b6440;background:#fbf0df}
.shensha-item dt{font-weight:700}.shensha-item dd{margin:4px 0 0;overflow-wrap:anywhere}
.shensha-value{font-size:1.1rem;color:#573c2b}
.line-assists{display:flex;justify-content:center;gap:4px;flex-wrap:wrap;margin-top:5px;white-space:normal}
.line-status{display:inline-block;padding:2px 5px;border:1px solid #875c43;border-radius:4px;font:600 12px/1.45 sans-serif;color:#593c27;background:#fff4de}
.line-status.day-void{border-color:#706b94;background:#f1eff9;color:#443f63}
.hide-line-assists .line-assists{display:none}
.comparison-reading-table .plate-main-head,.comparison-reading-table .plate-changed-head{white-space:pre-line;font-size:.94rem;line-height:1.8;padding:12px 8px}
.comparison-reading-table thead tr:first-child th.plate-main-head,.comparison-reading-table thead tr:first-child th.plate-changed-head{font-size:.95rem;line-height:1.65;letter-spacing:.02em;padding-block:10px}
.mobile-plate-column-head [role="columnheader"]{white-space:pre-line;overflow-wrap:anywhere;line-height:1.65;font-size:.88rem}
.mobile-panel-data .line-assists{flex-basis:100%;justify-content:flex-start}
.result-export>label{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
@media(max-width:700px){
 .reading-controls,.cast-time,.reading-auxiliary{padding:13px}
 .shensha-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
 .shensha-item{padding:10px}.cast-pillars{font-size:1rem;line-height:1.9}
 .result-export select{width:100%;font-size:.85rem}
 .reading-mode-row{gap:8px}.reading-mode-row button{flex:1}
 .mobile-plate-column-head{align-items:center}
}

/* Round 2 route views. */
.result-navigation{display:flex;gap:12px;margin:20px 0;flex-wrap:wrap}
.pillar-source{padding:12px;border-left:4px solid #827454;background:#faf7ef}
.pillar-source.is-manual{border-color:#9f542d;font-weight:700}
.shake-lines{display:grid;gap:8px;margin:16px 0}
.shake-line{display:flex;align-items:center;gap:16px;padding:10px;border:1px solid #d8d0c0;border-radius:8px;min-height:48px}
.shake-line .yao-glyph{width:90px}
#shake-button,#shake-reset{min-height:48px;margin:4px 0}
.inline-cases{margin-top:32px;padding-top:24px;border-top:2px solid #d3b77a}
.inline-case-card{margin:18px 0;padding:20px;border:1px solid #d8d0c0;border-radius:12px;background:#fffdf7}
.inline-case-card .book-body{white-space:pre-wrap;line-height:1.9;overflow-wrap:anywhere}
#result[data-presentation-mode="basic"] .body-summary{display:none}
@media(max-width:600px){.inline-case-card{padding:14px}.result-navigation button{flex:1;min-height:48px}.shake-line{gap:12px}}