:root {
  color-scheme: light;
  --paper: #eee8dc;
  --paper-soft: #f7f3ea;
  --paper-deep: #ded4c2;
  --paper-warm: #e8dece;
  --ink: #171915;
  --ink-soft: #4f5048;
  --ink-muted: #76756b;
  --patina: #47756c;
  --patina-deep: #2f5d55;
  --patina-pale: #c8d5ce;
  --cinnabar: #9b4d3f;
  --cinnabar-deep: #74362d;
  --bronze: #806b4c;
  --gold-muted: #9b825a;
  --danger: #a34338;
  --success: #3e6f5d;
  --line: rgba(23, 25, 21, 0.2);
  --line-soft: rgba(23, 25, 21, 0.11);
  --line-inverse: rgba(247, 243, 234, 0.24);
  --font-display: "Iowan Old Style", "Baskerville", "Bodoni 72", "Songti SC", "STSong", serif;
  --font-body: "Avenir Next", "IBM Plex Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-number: "DIN Alternate", "Bahnschrift", "Avenir Next", sans-serif;
  --shell: min(1280px, calc(100vw - 64px));
  --reading: 720px;
  --space-1: 6px;
  --space-2: 12px;
  --space-3: 18px;
  --space-4: 24px;
  --space-5: 36px;
  --space-6: 52px;
  --space-7: 76px;
  --space-8: 112px;
  --radius: 3px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 160ms;
  --duration: 360ms;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
img { display: block; max-width: 100%; }
svg { display: block; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }

::selection { background: var(--patina); color: var(--paper-soft); }

:focus-visible {
  outline: 2px solid var(--cinnabar);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--paper-soft);
  transform: translateY(-140%);
}
.skip-link:focus { transform: none; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.is-hidden { display: none !important; }
.section-shell { width: var(--shell); margin-inline: auto; }

.section-kicker,
.archive-status {
  margin: 0 0 14px;
  color: var(--cinnabar);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h1, h2 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
h2 { margin-bottom: 24px; font-size: clamp(2.3rem, 4.7vw, 4.8rem); }
h3 { line-height: 1.18; }
p { text-wrap: pretty; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: 100%;
  min-height: 76px;
  padding: 0 max(32px, calc((100vw - 1440px) / 2));
  border-bottom: 1px solid var(--line-soft);
  background: rgba(238, 232, 220, 0.94);
  backdrop-filter: blur(14px);
}

.brand { display: inline-flex; align-items: center; gap: 11px; color: inherit; text-decoration: none; }
.brand-mark { width: 42px; height: 42px; flex: none; object-fit: contain; }
.brand-type { display: grid; line-height: 1; }
.brand-type strong { white-space: nowrap; font-family: var(--font-display); font-size: 1.08rem; font-weight: 550; letter-spacing: 0.015em; }
.brand-type small { margin-top: 6px; color: var(--ink-muted); font-size: 0.46rem; letter-spacing: 0.13em; }

.desktop-nav { display: flex; justify-content: center; gap: clamp(18px, 2.2vw, 34px); }
.desktop-nav a,
.language-button {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 650;
  text-decoration: none;
}
.desktop-nav a { position: relative; padding: 26px 0; }
.desktop-nav a::after {
  position: absolute;
  right: 0;
  bottom: 18px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--cinnabar);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--duration) var(--ease);
}
.desktop-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 16px; }
.language-button { display: inline-flex; align-items: center; gap: 7px; border: 0; background: none; cursor: pointer; }
.language-button span { color: var(--cinnabar); font-family: var(--font-display); font-size: 1rem; }
.language-button strong { font-size: inherit; }

.header-cta,
.primary-button,
.submit-button,
.analysis-button {
  position: relative;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 24px;
  overflow: hidden;
  border: 1px solid var(--cinnabar);
  border-radius: var(--radius);
  background: var(--cinnabar);
  color: var(--paper-soft);
  font-weight: 720;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--duration-fast), border-color var(--duration-fast), transform var(--duration-fast);
}
.header-cta { min-height: 42px; padding-inline: 18px; font-size: 0.78rem; }
.primary-button svg,
.submit-button svg { width: 18px; height: 18px; }
.primary-button:hover,
.header-cta:hover,
.submit-button:hover,
.analysis-button:hover { border-color: var(--cinnabar-deep); background: var(--cinnabar-deep); transform: translateY(-1px); }

.text-link,
.secondary-link,
.secondary-button,
.quiet-action {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 5px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: none;
  color: var(--ink);
  font-weight: 680;
  text-decoration: none;
  cursor: pointer;
}
.secondary-button { padding-inline: 0; }

.hero {
  display: grid;
  min-height: max(740px, calc(100svh - 76px));
  grid-template-columns: minmax(0, 0.9fr) minmax(460px, 0.78fr);
  align-items: center;
  gap: clamp(56px, 8vw, 140px);
  width: var(--shell);
  margin-inline: auto;
  padding: 100px 0 88px;
}
.hero-copy { max-width: 720px; }
.hero h1 { margin-bottom: 32px; font-size: clamp(4rem, 7.7vw, 8.5rem); }
.hero h1 em { color: var(--patina-deep); font-style: italic; font-weight: 400; }
.hero-copy > p:not(.section-kicker):not(.hero-note) { max-width: 620px; margin-bottom: 34px; color: var(--ink-soft); font-size: clamp(1.08rem, 1.4vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; }
.hero-note { margin: 28px 0 0; padding-left: 14px; border-left: 1px solid var(--bronze); color: var(--ink-muted); font-size: 0.83rem; }

.hero-archive { position: relative; padding: 26px 0 0 28px; border-top: 1px solid var(--ink); border-left: 1px solid var(--line); }
.hero-archive::before { position: absolute; top: -4px; left: -4px; width: 7px; height: 7px; content: ""; background: var(--cinnabar); }
.hero-archive-heading { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid var(--line-soft); }
.hero-archive-heading span { font-family: var(--font-number); font-size: 0.76rem; letter-spacing: 0.14em; }
.hero-archive-heading small { max-width: 230px; color: var(--ink-muted); font-size: 0.72rem; text-align: right; }
.hero-grid { display: grid; aspect-ratio: 3 / 4; grid-template-columns: repeat(3, 1fr); margin: 26px 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.hero-grid span { position: relative; display: grid; place-items: center; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.hero-grid b { font-family: var(--font-number); font-size: clamp(2rem, 4vw, 4.3rem); font-weight: 350; }
.hero-grid .is-marked::before { position: absolute; top: 12px; left: 12px; width: 8px; height: 8px; content: ""; border-radius: 50%; background: var(--cinnabar); }
.hero-grid .hero-grid-pivot { grid-column: 2; grid-row: 4; }
.hero-codes { display: grid; grid-template-columns: 1fr 1fr; margin: 0; border-top: 1px solid var(--line); }
.hero-codes div { padding: 18px 0; }
.hero-codes div + div { padding-left: 22px; border-left: 1px solid var(--line); }
.hero-codes dt { color: var(--ink-muted); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase; }
.hero-codes dd { margin: 8px 0 0; font-family: var(--font-number); font-size: 1.8rem; }

.culture-origin { padding: 36px 0 var(--space-8); }
.culture-carousel-viewport { position: relative; overflow: hidden; border-top: 1px solid var(--line); }
.culture-carousel-track { display: flex; transition: transform 560ms cubic-bezier(0.22, 1, 0.36, 1); will-change: transform; }
.culture-hero-figure { position: relative; flex: 0 0 100%; aspect-ratio: 16 / 9; margin: 0; overflow: hidden; border-bottom: 1px solid var(--line); background: #eee8db; }
.culture-hero-figure > img { width: 100%; height: 100%; object-fit: contain; user-select: none; -webkit-user-drag: none; }
.culture-hero-figure figcaption { position: absolute; top: 46%; left: 5.8%; width: 41%; transform: translateY(-50%); }
#cultureSlideLuoshu figcaption { width: 35.5%; }
.culture-hero-figure h2 { margin-bottom: 20px; font-size: clamp(3rem, 5.15vw, 5.8rem); line-height: 0.92; }
.culture-hero-figure figcaption > p:not(.section-kicker) { max-width: 570px; margin-bottom: 12px; color: var(--ink-soft); font-size: clamp(0.82rem, 0.96vw, 0.96rem); line-height: 1.58; }
#cultureSlideLuoshu figcaption > p:not(.section-kicker) { max-width: 470px; }
.culture-carousel-viewport .culture-overlay-arrow { position: absolute; z-index: 4; top: 50%; display: grid; width: 48px; height: 48px; place-items: center; margin: 0; padding: 0; border: 1px solid rgba(23, 25, 22, 0.38); border-radius: 50%; background: rgba(238, 232, 220, 0.9); color: var(--ink); cursor: pointer; opacity: 0; pointer-events: none; transform: translateY(-50%) scale(0.94); transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease, background 180ms ease, color 180ms ease; visibility: hidden; }
.culture-overlay-arrow.is-previous { right: auto; left: 22px; }
.culture-overlay-arrow.is-next { right: 22px; left: auto; }
.culture-overlay-arrow svg { width: 22px; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.5; }
.culture-carousel-viewport:hover .culture-overlay-arrow,
.culture-carousel-viewport:focus-within .culture-overlay-arrow,
.culture-carousel-viewport:focus .culture-overlay-arrow { opacity: 1; pointer-events: auto; transform: translateY(-50%) scale(1); visibility: visible; }
.culture-overlay-arrow:hover { background: var(--ink); color: var(--paper); }
.culture-carousel-dots { position: absolute; z-index: 4; bottom: 22px; left: 50%; display: flex; gap: 11px; align-items: center; transform: translateX(-50%); }
.culture-carousel-dot { width: 10px; height: 10px; padding: 0; border: 1px solid rgba(23, 25, 22, 0.72); border-radius: 50%; background: #fff; box-shadow: 0 1px 5px rgba(23, 25, 22, 0.14); cursor: pointer; transition: background 180ms ease, transform 180ms ease; }
.culture-carousel-dot:hover { transform: scale(1.18); }
.culture-carousel-dot.is-active { background: var(--ink); }

@media (hover: none), (pointer: coarse) {
  .culture-carousel-viewport .culture-overlay-arrow { opacity: 1; pointer-events: auto; transform: translateY(-50%) scale(1); visibility: visible; }
}

.section-heading { max-width: 820px; }
.section-heading > p:not(.section-kicker) { max-width: 680px; color: var(--ink-soft); font-size: 1.08rem; }

.method-section { padding: var(--space-8) 0; }
.method-section .section-heading { margin-bottom: 70px; }
.method-index { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; padding: 0; border-top: 1px solid var(--ink); list-style: none; }
.method-index li { min-height: 260px; padding: 22px 26px 28px 0; border-bottom: 1px solid var(--line); }
.method-index li + li { padding-left: 26px; border-left: 1px solid var(--line); }
.method-index span { color: var(--cinnabar); font-family: var(--font-number); font-size: 0.74rem; }
.method-index strong { display: block; margin: 52px 0 16px; font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; }
.method-index p { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }

.numerical-section { display: grid; grid-template-columns: 0.72fr 1fr; gap: clamp(60px, 9vw, 140px); padding: var(--space-8) 0; border-top: 1px solid var(--line); }
.numerical-intro { align-self: center; }
.numerical-stage { display: grid; grid-template-columns: minmax(300px, 1fr) minmax(160px, 0.42fr); gap: 30px; align-items: end; }
.example-number-grid,
.number-grid { display: grid; aspect-ratio: 3 / 4; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--ink); border-left: 1px solid var(--ink); }
.example-number-cell,
.number-cell { position: relative; display: grid; min-width: 0; place-items: center; padding: 0; border: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); cursor: pointer; }
.example-number-cell:nth-child(4), .example-number-cell:nth-child(5), .example-number-cell:nth-child(6),
.number-cell:nth-child(4), .number-cell:nth-child(5), .number-cell:nth-child(6) { background: rgba(71, 117, 108, 0.08); }
.example-number-cell:nth-child(7), .example-number-cell:nth-child(8), .example-number-cell:nth-child(9),
.number-cell:nth-child(7), .number-cell:nth-child(8), .number-cell:nth-child(9) { background: rgba(155, 77, 63, 0.055); }
.example-number-cell b,
.number-value { font-family: var(--font-number); font-size: clamp(1.6rem, 4vw, 4.2rem); font-weight: 350; line-height: 1; }
.example-number-pivot,
.number-cell:last-child { grid-column: 2; }
.cell-signal { position: absolute; top: 10px; left: 10px; width: 7px; height: 7px; border: 1px solid var(--ink); border-radius: 50%; }
.cell-signal.is-main { background: var(--cinnabar); border-color: var(--cinnabar); }
.cell-signal.is-aux { border-radius: 0; border-color: var(--patina-deep); }
.cell-signal.is-missing { width: 10px; height: 1px; top: 13px; background: var(--ink-muted); border: 0; }
.cell-count { position: absolute; right: 9px; bottom: 7px; color: var(--cinnabar); font-size: 0.72rem; letter-spacing: 0.1em; }
.code-annotation { padding-bottom: 8px; border-bottom: 1px solid var(--ink); }
.code-annotation > span { color: var(--ink-muted); font-size: 0.72rem; letter-spacing: 0.11em; text-transform: uppercase; }
.code-annotation strong { display: block; margin: 12px 0 18px; font-family: var(--font-number); font-size: clamp(1.8rem, 3vw, 3.4rem); font-weight: 450; }
.code-annotation p { color: var(--ink-soft); font-size: 0.88rem; }

.label-section { display: grid; grid-template-columns: 0.72fr 1fr; align-items: center; gap: clamp(52px, 8vw, 120px); padding: var(--space-8) max(36px, calc((100vw - 1280px) / 2)); background-color: #593a2f; color: var(--paper-soft); box-shadow: inset 0 1px rgba(247, 243, 234, 0.12), inset 0 -1px rgba(23, 25, 21, 0.28); }
.label-copy { max-width: 650px; }
.label-copy .section-kicker { color: #d4b28b; }
.label-copy p:not(.section-kicker) { color: rgba(247, 243, 234, 0.76); }
.label-equation { display: grid; grid-template-columns: minmax(220px, 1fr) auto minmax(170px, 0.68fr); align-items: center; gap: clamp(22px, 3vw, 48px); }
.label-equation > span { padding: 24px 0; border-top: 1px solid var(--line-inverse); border-bottom: 1px solid var(--line-inverse); }
.label-equation b { display: block; font-family: var(--font-number); font-size: clamp(3rem, 5vw, 5.6rem); font-weight: 330; line-height: 1; text-align: center; }
.label-equation > i { color: #d4b28b; font-family: var(--font-display); font-size: 2rem; font-style: normal; }
.label-equation figure { display: grid; min-height: 210px; place-items: center; align-content: center; margin: 0; text-align: center; }
.label-equation img { width: 138px; margin: auto; border-radius: 50%; filter: none; }
.label-equation figcaption { margin-top: 12px; color: var(--paper-soft); font-size: 0.75rem; }

.lineage-section { padding: var(--space-8) 0; }
.lineage-heading { margin-bottom: 60px; }
.lineage-ledger { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.48fr); gap: 60px; border-top: 1px solid var(--ink); }
.lineage-primary { display: grid; grid-template-columns: 220px 1fr; gap: 50px; align-items: center; padding: 48px 0; }
.lineage-symbol { display: grid; aspect-ratio: 1; place-items: center; border: 1px solid var(--line); }
.lineage-symbol img { width: 78%; filter: none; }
.lineage-primary h3 { margin-bottom: 18px; font-family: var(--font-display); font-size: clamp(2rem, 3vw, 3.3rem); font-weight: 500; }
.lineage-primary p { max-width: 560px; color: var(--ink-soft); }
.lineage-primary > div:last-child > span { color: var(--cinnabar); font-family: var(--font-number); letter-spacing: 0.09em; }
.lineage-index { border-left: 1px solid var(--line); }
.lineage-index button { display: grid; width: 100%; min-height: 82px; grid-template-columns: 46px 1fr; align-items: center; gap: 18px; padding: 12px 18px; border: 0; border-bottom: 1px solid var(--line); background: none; color: var(--ink-soft); text-align: left; cursor: pointer; }
.lineage-index button.is-active { color: var(--ink); background: rgba(71, 117, 108, 0.08); }
.lineage-index button:focus-visible { position: relative; outline: 2px solid var(--cinnabar); outline-offset: -2px; z-index: 1; }
.lineage-index img { width: 42px; filter: none; }

.reveal-section { display: grid; grid-template-columns: 0.76fr 0.7fr; gap: clamp(60px, 8vw, 120px); padding: var(--space-8) 0; border-top: 1px solid var(--line); }
.reveal-copy ul { margin: 28px 0 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.reveal-copy li { padding: 13px 0; border-bottom: 1px solid var(--line); color: var(--ink-soft); }
.archive-preview { position: relative; min-height: 520px; padding: 42px; border: 1px solid var(--ink); background: var(--paper-soft); }
.archive-preview::before { position: absolute; inset: 12px; content: ""; border: 1px solid var(--line); pointer-events: none; }
.preview-coordinate { display: block; color: var(--cinnabar); font-size: 0.67rem; letter-spacing: 0.16em; }
.archive-preview > strong { display: block; margin-top: 18px; font-family: var(--font-number); font-size: clamp(3rem, 5vw, 5.6rem); font-weight: 300; }
.archive-preview img { width: 190px; margin: 34px auto; filter: none; }
.archive-preview div { display: flex; justify-content: space-between; gap: 20px; padding-top: 18px; border-top: 1px solid var(--line); }
.archive-preview div span { color: var(--ink-muted); font-size: 0.68rem; letter-spacing: 0.12em; }
.offer-strip { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; margin-top: 18px; padding: 30px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.offer-strip > p { max-width: 620px; margin: 0; color: var(--ink-soft); }

.measure-section { padding: var(--space-8) 0; }
.measure-heading { max-width: 720px; margin-bottom: 50px; }
.measure-heading p { color: var(--ink-soft); }
.measure-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 0.38fr); border-top: 1px solid var(--ink); }
.measure-card { padding: 50px 60px 56px 0; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px 32px; }
.field { display: grid; gap: 8px; }
.field > span { font-size: 0.78rem; font-weight: 720; letter-spacing: 0.04em; }
.field input,
.field select { width: 100%; min-height: 52px; padding: 0 13px; border: 0; border-bottom: 1px solid var(--ink); border-radius: 0; background: transparent; color: var(--ink); }
.field input:focus,
.field select:focus { background: var(--paper-soft); outline: 0; border-bottom-color: var(--cinnabar); }
.field small { color: var(--ink-muted); font-size: 0.72rem; }
.field-error { min-height: 1em; color: var(--danger); font-size: 0.72rem; font-style: normal; }
.field.has-error input,
.field.has-error select { border-color: var(--danger); }
.precision-panel { margin-top: 34px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.precision-panel summary { display: flex; min-height: 58px; align-items: center; justify-content: space-between; cursor: pointer; }
.precision-panel summary span { font-weight: 700; }
.precision-panel summary small { color: var(--ink-muted); }
.precision-body { display: grid; grid-template-columns: 1fr 1fr; gap: 26px 30px; padding: 8px 0 32px; }
.alias-field { margin-top: 32px; }
.checkbox-field { display: flex; align-items: flex-start; gap: 10px; color: var(--ink-soft); font-size: 0.82rem; }
.checkbox-field input { flex: 0 0 auto; width: 17px; height: 17px; margin-top: 4px; accent-color: var(--cinnabar); }
.consent-area { display: grid; gap: 12px; margin: 28px 0; }
.submit-button { min-width: 260px; }
.privacy-copy { max-width: 650px; margin: 18px 0 0; color: var(--ink-muted); font-size: 0.73rem; }
.analysis-context { padding: 50px 0 50px 50px; border-left: 1px solid var(--line); }
.analysis-context h3 { font-family: var(--font-display); font-size: 1.8rem; font-weight: 500; }
.analysis-context dl { margin: 30px 0; }
.analysis-context dl div { padding: 15px 0; border-bottom: 1px solid var(--line); }
.analysis-context dt { font-weight: 700; }
.analysis-context dd { margin: 4px 0 0; color: var(--ink-muted); font-size: 0.82rem; }

.result-section { padding: 90px 0 var(--space-8); }
.result-heading { display: flex; width: min(100%, 1080px); align-items: end; justify-content: space-between; gap: 24px; margin: 0 auto 56px; padding-bottom: 28px; border-bottom: 1px solid var(--ink); }
.result-heading h2 { margin: 0; }
.result-analysis-layout { display: block; width: min(100%, 900px); margin-inline: auto; }
.personal-chart-panel { width: 100%; margin-inline: auto; }
.personal-record { width: min(100%, 820px); margin-inline: auto; padding-bottom: 22px; border-bottom: 1px solid var(--ink); }
.personal-record dl { margin: 0; }
.personal-record dl div { display: grid; grid-template-columns: 112px 1fr; padding: 8px 0; border-bottom: 1px solid var(--line-soft); }
.personal-record dt { color: var(--ink-muted); font-size: 0.72rem; }
.personal-record dd { margin: 0; font-size: 0.82rem; text-align: right; overflow-wrap: anywhere; }
.chart-card { width: min(100%, 820px); margin-inline: auto; padding: 38px 0 34px; border-bottom: 1px solid var(--ink); }
.chart-tabs { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 26px; border-bottom: 1px solid var(--line); }
.chart-tab { padding: 0 0 14px; border: 0; border-bottom: 2px solid transparent; background: none; color: var(--ink-muted); font-size: 0.84rem; font-weight: 720; cursor: pointer; }
.chart-tab.is-active { border-bottom-color: var(--cinnabar); color: var(--ink); }
.signature-block { display: grid; grid-template-columns: 1fr auto; align-items: end; margin-bottom: 20px; }
.signature-block span { color: var(--ink-muted); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; }
.signature-block strong { grid-row: span 2; font-family: var(--font-number); font-size: clamp(4.6rem, 7vw, 7rem); font-weight: 300; line-height: 0.9; }
.signature-block small { color: var(--ink-muted); font-size: 0.72rem; }
.number-grid { width: min(100%, 720px); margin-inline: auto; }
.number-cell .number-value { font-size: clamp(2.6rem, 5.2vw, 5.5rem); }
.cell-top { position: absolute; top: 7px; left: 7px; display: flex; gap: 5px; }
.cell-top > span { display: inline-flex; gap: 2px; }
.cell-bottom { position: absolute; right: 6px; bottom: 6px; display: flex; align-items: center; gap: 3px; }
.marker-main, .marker-aux, .marker-po, .marker-half { display: inline-block; width: 7px; height: 7px; border: 1px solid var(--ink); }
.marker-main { border-radius: 50%; background: var(--cinnabar); border-color: var(--cinnabar); }
.marker-aux { border-color: var(--patina-deep); }
.marker-po { width: 5px; height: 5px; border-radius: 50%; border-color: var(--cinnabar); }
.marker-half { width: auto; height: auto; border: 0; font-style: normal; }
.marker-missing { color: var(--ink-muted); font-style: normal; }
.marker-count { color: var(--ink-muted); font-size: 0.58rem; }
.chart-summary { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 22px; border-top: 1px solid var(--line); }
.chart-summary span { padding-top: 12px; }
.chart-summary small { display: block; color: var(--ink-muted); font-size: 0.7rem; }
.chart-summary strong { display: block; margin-top: 3px; font-family: var(--font-number); font-size: 1.08rem; font-weight: 500; }
.chart-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.chart-legend span { display: inline-flex; align-items: center; gap: 5px; }
.chart-legend i { width: 7px; height: 7px; border: 1px solid var(--ink); }
.chart-legend .legend-main { border-radius: 50%; background: var(--cinnabar); border-color: var(--cinnabar); }
.chart-legend .legend-aux { border-color: var(--patina); }
.chart-legend .legend-missing { width: 9px; height: 1px; background: var(--ink-muted); border: 0; }
.chart-legend b { color: var(--ink-muted); font-size: 0.62rem; font-weight: 600; }

.soul-cluster-card { display: grid; width: min(100%, 820px); grid-template-columns: 108px 1fr; gap: 30px; align-items: center; margin-inline: auto; padding: 34px 0; border-bottom: 1px solid var(--ink); }
.cluster-symbol-stage { display: grid; aspect-ratio: 1; place-items: center; border: 1px solid var(--line); }
.cluster-symbol { width: 82%; filter: none; }
.soul-cluster-card > div:last-child > span { color: var(--cinnabar); font-size: 0.64rem; font-weight: 750; letter-spacing: 0.12em; }
.soul-cluster-card h3 { margin: 5px 0 8px; font-family: var(--font-display); font-size: 1.55rem; font-weight: 500; }
.soul-cluster-card p { margin: 0 0 8px; color: var(--ink-soft); font-size: 0.78rem; }
.soul-cluster-card small { color: var(--ink-muted); font-size: 0.62rem; }
.alien-glyph { position: relative; width: 50px; height: 50px; border: 1px solid var(--patina); border-radius: 50%; }
.alien-glyph span, .alien-glyph i, .alien-glyph b { position: absolute; inset: 50% auto auto 50%; display: block; width: 22px; height: 1px; background: var(--patina); transform: translate(-50%, -50%); }
.alien-glyph i { transform: translate(-50%, -50%) rotate(60deg); }
.alien-glyph b { transform: translate(-50%, -50%) rotate(-60deg); }

.numerical-reading { width: min(100%, 1080px); margin: 84px auto 0; padding-top: 34px; border-top: 1px solid var(--ink); }
.numerical-reading-heading { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.72fr); gap: clamp(36px, 7vw, 100px); align-items: end; }
.numerical-reading-heading .section-kicker { grid-column: 1 / -1; margin-bottom: -18px; }
.numerical-reading-heading h3 { max-width: 720px; margin: 0; font-family: var(--font-display); font-size: clamp(2.7rem, 5vw, 5rem); font-weight: 500; line-height: 0.98; }
.numerical-reading-heading > p:last-child { margin: 0; color: var(--ink-soft); }
.number-insight-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 48px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.number-insight { display: grid; min-height: 220px; grid-template-columns: 78px 1fr; gap: 22px; padding: 28px; border: 0; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: transparent; color: var(--ink); text-align: left; cursor: pointer; transition: background var(--duration) var(--ease), color var(--duration) var(--ease); }
.number-insight:hover { background: var(--paper-soft); }
.number-insight:focus-visible { position: relative; z-index: 1; }
.number-insight-number { font-family: var(--font-number); font-size: 4.2rem; font-weight: 300; line-height: 0.9; }
.number-insight-copy { display: flex; min-width: 0; flex-direction: column; }
.number-insight-copy > span { color: var(--cinnabar); font-size: 0.66rem; font-weight: 720; letter-spacing: 0.08em; text-transform: uppercase; }
.number-insight-copy strong { margin-top: 12px; font-family: var(--font-display); font-size: 1.55rem; font-weight: 500; line-height: 1.12; }
.number-insight-copy p { margin: 14px 0 0; color: var(--ink-soft); font-size: 0.78rem; line-height: 1.65; }
.number-insight-copy small { margin-top: auto; padding-top: 20px; color: var(--ink-muted); font-size: 0.66rem; }

.report-paywall { width: min(100%, 1180px); margin: 110px auto 0; padding: clamp(40px, 6vw, 76px); background: #5a3b32; color: var(--paper-soft); }
.paywall-heading { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.65fr); gap: clamp(36px, 7vw, 100px); align-items: end; padding-bottom: 44px; border-bottom: 1px solid rgba(247, 243, 234, 0.28); }
.paywall-heading .section-kicker { color: #d8a991; }
.paywall-heading h3 { max-width: 760px; margin: 0; font-family: var(--font-display); font-size: clamp(3rem, 5.3vw, 5.6rem); font-weight: 500; line-height: 0.96; }
.paywall-heading > p { margin: 0; color: rgba(247, 243, 234, 0.72); }
.locked-report-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 38px; border-top: 1px solid rgba(247, 243, 234, 0.2); border-left: 1px solid rgba(247, 243, 234, 0.2); }
.locked-report-grid article { min-height: 210px; padding: 28px; overflow: hidden; border-right: 1px solid rgba(247, 243, 234, 0.2); border-bottom: 1px solid rgba(247, 243, 234, 0.2); }
.locked-report-grid span { color: #d8a991; font-size: 0.62rem; font-weight: 750; letter-spacing: 0.13em; }
.locked-report-grid h4 { max-width: 390px; margin: 22px 0 28px; font-family: var(--font-display); font-size: clamp(1.45rem, 2vw, 2.15rem); font-weight: 500; }
.locked-lines { display: grid; gap: 11px; opacity: 0.52; filter: blur(4px); }
.locked-lines i { display: block; width: 92%; height: 8px; background: rgba(247, 243, 234, 0.5); }
.locked-lines i:nth-child(2) { width: 78%; }
.locked-lines i:nth-child(3) { width: 64%; }
.unlock-offers { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 56px; border-top: 1px solid rgba(247, 243, 234, 0.34); border-left: 1px solid rgba(247, 243, 234, 0.34); }
.unlock-offer { display: grid; min-height: 340px; align-content: start; padding: clamp(26px, 4vw, 44px); border: 0; border-right: 1px solid rgba(247, 243, 234, 0.34); border-bottom: 1px solid rgba(247, 243, 234, 0.34); background: transparent; color: var(--paper-soft); text-align: left; cursor: pointer; transition: background var(--duration) var(--ease), color var(--duration) var(--ease); }
.unlock-offer:hover, .unlock-offer:focus-visible { background: rgba(247, 243, 234, 0.09); }
.unlock-offer.is-featured { background: rgba(71, 117, 108, 0.3); }
.unlock-offer > span { color: #d8a991; font-size: 0.68rem; font-weight: 750; letter-spacing: 0.12em; }
.unlock-offer > strong { margin-top: 24px; font-family: var(--font-number); font-size: clamp(4rem, 7vw, 6.6rem); font-weight: 300; line-height: 0.9; }
.unlock-offer h4 { margin: 26px 0 10px; font-family: var(--font-display); font-size: clamp(1.6rem, 2.5vw, 2.5rem); font-weight: 500; }
.unlock-offer p { max-width: 440px; margin: 0; color: rgba(247, 243, 234, 0.7); }
.unlock-offer b { align-self: end; margin-top: 32px; font-size: 0.75rem; letter-spacing: 0.04em; text-decoration: underline; text-underline-offset: 7px; }
.analysis-gate { display: grid; width: min(100%, 1080px); grid-template-columns: 1fr auto; gap: 30px; align-items: center; margin: 52px auto 0; padding: 34px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.analysis-gate h3 { margin: 0 0 7px; font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; }
.analysis-gate p { margin: 0; color: var(--ink-soft); }
.focus-chips { display: flex; flex-wrap: wrap; gap: 7px; }
.focus-chips button { padding: 8px 12px; border: 1px solid var(--line); border-radius: 0; background: none; color: var(--ink-soft); cursor: pointer; }
.focus-chips button.is-active { border-color: var(--patina-deep); background: var(--patina-deep); color: var(--paper-soft); }
.analysis-button { grid-column: 2; grid-row: 1 / span 2; }

.analysis-report { margin-top: 90px; }
.report-header { display: grid; grid-template-columns: 1fr 140px; gap: 30px; align-items: end; padding-bottom: 32px; border-bottom: 1px solid var(--ink); }
.report-header h2 { margin-bottom: 12px; }
.report-header p { margin: 0; color: var(--ink-soft); font-family: var(--font-display); font-size: 1.25rem; }
.report-totem-symbol { width: 130px; filter: none; }
.report-layout { display: grid; grid-template-columns: 230px minmax(0, var(--reading)); gap: clamp(50px, 8vw, 120px); align-items: start; padding: 60px 0; }
.report-toc { position: sticky; top: 108px; }
.report-toc > strong { display: block; padding-bottom: 12px; border-bottom: 1px solid var(--ink); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; }
.report-toc ol { margin: 0; padding: 0; list-style: none; }
.report-toc li { border-bottom: 1px solid var(--line); }
.report-toc a { display: block; padding: 11px 0; color: var(--ink-soft); font-size: 0.78rem; text-decoration: none; }
.report-section { padding-bottom: 50px; }
.report-section h3 { margin: 0 0 18px; font-family: var(--font-display); font-size: clamp(1.8rem, 3vw, 2.7rem); font-weight: 500; }
.report-section p { color: var(--ink-soft); font-size: 1.03rem; line-height: 1.9; white-space: pre-wrap; }
.action-panel, .reflection-panel { margin-top: 42px; padding-top: 32px; border-top: 1px solid var(--ink); }
.action-panel h3, .reflection-panel h3 { font-family: var(--font-display); font-size: 1.8rem; font-weight: 500; }
.action-grid { display: grid; gap: 0; }
.action-item { display: grid; grid-template-columns: 180px 1fr; gap: 28px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.action-item p { margin: 0; color: var(--ink-soft); }
.reflection-panel ol { padding-left: 22px; }
.reflection-panel li { margin-bottom: 14px; padding-left: 8px; color: var(--ink-soft); }
.uncertainty-panel { margin-top: 44px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); color: var(--ink-muted); }
.uncertainty-panel summary { cursor: pointer; font-weight: 700; }
.feedback-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 38px; }
.feedback-row span { margin-right: auto; color: var(--ink-muted); }
.feedback-row button { padding: 8px 12px; border: 1px solid var(--line); background: none; cursor: pointer; }
.poster-shell { margin-top: 50px; padding-top: 24px; border-top: 1px solid var(--line); }
.poster-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.poster-toolbar button { padding: 7px 12px; border: 1px solid var(--ink); background: none; cursor: pointer; }
.report-poster-shell canvas { width: min(100%, 540px); height: auto; border: 1px solid var(--line); }

.archives-section { padding: var(--space-8) 0; border-top: 1px solid var(--line); }
.archives-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; }
.archives-heading h2 { margin-bottom: 12px; font-size: clamp(2.4rem, 4vw, 4.2rem); }
.archives-heading p { color: var(--ink-soft); }
.archive-list { margin-top: 36px; }
.empty-state { max-width: 520px; padding: 44px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.empty-state svg { width: 48px; color: var(--patina); }
.empty-state h3 { margin: 24px 0 8px; font-family: var(--font-display); font-size: 1.7rem; }
.empty-state p { color: var(--ink-soft); }
.empty-state a { color: var(--cinnabar); }
.archive-item { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.archive-item h3 { margin: 0; font-family: var(--font-display); font-weight: 500; }
.archive-item p { margin: 4px 0 0; color: var(--ink-muted); }
.archive-actions { display: flex; gap: 8px; }
.archive-actions button { padding: 8px 12px; border: 1px solid var(--line); background: none; cursor: pointer; }

footer { display: grid; grid-template-columns: 0.4fr 1fr auto; gap: 46px; width: 100%; padding: 52px max(32px, calc((100vw - 1280px) / 2)); border-top: 1px solid var(--ink); background: var(--paper-deep); }
.footer-brand { display: grid; align-content: start; }
.footer-brand strong { font-family: var(--font-display); letter-spacing: 0.14em; }
.footer-brand span { color: var(--ink-muted); font-size: 0.6rem; letter-spacing: 0.14em; }
footer p { max-width: 680px; margin: 0; color: var(--ink-soft); font-size: 0.76rem; }
footer nav { display: flex; flex-wrap: wrap; gap: 12px 20px; font-size: 0.76rem; }

dialog { color: var(--ink); }
dialog::backdrop { background: rgba(23, 25, 21, 0.58); backdrop-filter: blur(3px); }
.number-dialog { width: min(720px, calc(100vw - 32px)); max-height: calc(100svh - 32px); padding: 46px; overflow: auto; border: 1px solid var(--ink); border-radius: 0; background: var(--paper-soft); box-shadow: 0 24px 80px rgba(23, 25, 21, 0.3); }
.dialog-close { position: absolute; top: 15px; right: 15px; display: grid; width: 36px; height: 36px; place-items: center; border: 0; background: none; cursor: pointer; }
.dialog-close svg { width: 18px; height: 18px; }
.number-dialog h2 { font-size: clamp(2.2rem, 5vw, 4rem); }

.analysis-overlay { position: fixed; inset: 0; z-index: 200; display: grid; grid-template-columns: minmax(280px, 520px) minmax(280px, 560px); place-content: center; gap: clamp(40px, 7vw, 100px); padding: 60px; overflow: auto; background: var(--paper-soft); color: var(--ink); }
.overlay-close { position: fixed; top: 24px; right: 24px; display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid var(--line); background: none; cursor: pointer; }
.overlay-close svg { width: 18px; height: 18px; }
.loading-instrument svg { width: 100%; }
.loading-links, .loading-tree, .loading-eye { stroke: var(--bronze); stroke-width: 1; }
.loading-links { stroke-dasharray: 900; animation: trace-path 2.5s var(--ease) infinite alternate; }
.loading-tree { stroke: var(--patina-deep); stroke-dasharray: 700; animation: trace-path 3.2s 0.6s var(--ease) infinite alternate; }
.loading-eye { opacity: 0.38; stroke-dasharray: 700; animation: trace-path 3s 1.2s var(--ease) infinite alternate; }
.loading-nodes circle { fill: var(--paper-soft); stroke: var(--ink); transform-box: fill-box; transform-origin: center; animation: settle-node 2.2s var(--ease) infinite; }
.loading-nodes .node-yin { fill: var(--ink); }
.loading-nodes .loading-core { fill: var(--cinnabar); stroke: var(--cinnabar); }
.loading-nodes circle:nth-child(2) { animation-delay: 0.14s; }
.loading-nodes circle:nth-child(3) { animation-delay: 0.28s; }
.loading-nodes circle:nth-child(4) { animation-delay: 0.42s; }
.loading-nodes circle:nth-child(5) { animation-delay: 0.56s; }
.loading-nodes circle:nth-child(6) { animation-delay: 0.7s; }
.loading-nodes circle:nth-child(7) { animation-delay: 0.84s; }
.loading-nodes circle:nth-child(8) { animation-delay: 0.98s; }
.loading-nodes circle:nth-child(9) { animation-delay: 1.12s; }
.loading-sequence-label { display: flex; justify-content: center; gap: 12px; color: var(--ink-muted); font-family: var(--font-number); font-size: 0.68rem; letter-spacing: 0.12em; }
.loading-sequence-label span { color: var(--cinnabar); }
.loading-copy { align-self: center; }
.loading-copy h2 { font-size: clamp(3rem, 6vw, 6rem); }
.loading-copy p { color: var(--patina-deep); font-family: var(--font-display); font-size: 1.4rem; }
.loading-copy small { color: var(--ink-muted); }
.generation-error { align-self: center; padding-left: 24px; border-left: 2px solid var(--cinnabar); }
.generation-error h3 { font-family: var(--font-display); font-size: 2rem; }
.generation-error button { padding: 10px 16px; border: 1px solid var(--cinnabar); background: var(--cinnabar); color: var(--paper-soft); cursor: pointer; }

.number-dialog { width: min(760px, calc(100vw - 32px)); }
.dialog-number { color: var(--cinnabar); font-family: var(--font-number); font-size: 4rem; }
.dialog-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 30px; border-top: 1px solid var(--line); }
.dialog-columns > div { padding-top: 24px; }
.dialog-columns h3 { font-family: var(--font-display); }
.dialog-practice { margin-top: 28px; padding: 20px 0; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--ink); }
.dialog-correspondence { display: grid; grid-template-columns: 1fr 1fr; margin-top: 26px; border-top: 1px solid var(--ink); border-bottom: 1px solid var(--line); }
.dialog-correspondence span { display: grid; gap: 8px; padding: 18px 0; }
.dialog-correspondence span + span { padding-left: 22px; border-left: 1px solid var(--line); }
.dialog-correspondence b { color: var(--cinnabar); font-size: .73rem; letter-spacing: .12em; text-transform: uppercase; }
.dialog-correspondence em { font-family: var(--font-display); font-size: 1.4rem; font-style: normal; }

.toast { position: fixed; right: 22px; bottom: 22px; z-index: 300; max-width: min(420px, calc(100vw - 44px)); padding: 13px 17px; border-left: 3px solid var(--cinnabar); background: var(--ink); color: var(--paper-soft); opacity: 0; pointer-events: none; transform: translateY(12px); transition: opacity var(--duration), transform var(--duration); }
.toast.is-visible { opacity: 1; transform: none; }

.effect-control { position: relative; overflow: hidden; }
.control-ripple { position: absolute; z-index: 0; width: 42px; height: 42px; border-radius: 50%; background: rgba(247, 243, 234, 0.45); pointer-events: none; }

@keyframes trace-path { from { stroke-dashoffset: 900; opacity: 0.28; } to { stroke-dashoffset: 0; opacity: 0.88; } }
@keyframes settle-node { 0%, 20% { opacity: 0.25; transform: scale(0.62); } 50%, 100% { opacity: 1; transform: scale(1); } }

@media (max-width: 1100px) {
  body { --shell: min(100% - 42px, 980px); }
  .desktop-nav { display: none; }
  .site-header { grid-template-columns: 1fr auto; }
  .hero { grid-template-columns: 1fr 0.72fr; gap: 50px; }
  .hero h1 { font-size: clamp(3.8rem, 8.3vw, 6.6rem); }
  .method-index { grid-template-columns: 1fr 1fr; }
  .method-index li:nth-child(3) { border-left: 0; }
  .numerical-section, .label-section { grid-template-columns: 1fr; }
  .numerical-stage { max-width: 760px; }
  .report-layout { grid-template-columns: 190px 1fr; gap: 50px; }
}

@media (max-width: 800px) {
  body { --shell: min(100% - 30px, 680px); --space-8: 82px; }
  .site-header { min-height: 66px; padding-inline: 15px; }
  .brand-type small { display: none; }
  .header-cta { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; gap: 62px; padding: 78px 0 72px; }
  .hero h1 { font-size: clamp(3.5rem, 17vw, 6.4rem); }
  .hero-archive { width: min(100%, 520px); padding-left: 18px; }
  .culture-origin { width: 100%; padding-bottom: 74px; }
  .culture-carousel-viewport { border-top: 0; }
  .culture-hero-figure { display: flex; aspect-ratio: auto; flex-direction: column; border: 0; }
  .culture-hero-figure > img { order: 2; aspect-ratio: 16 / 9; object-fit: contain; }
  .culture-hero-figure figcaption { position: static; order: 1; width: var(--shell); margin: 38px auto 34px; transform: none; }
  #cultureSlideLuoshu figcaption { width: var(--shell); }
  #cultureSlideLuoshu figcaption > p:not(.section-kicker) { max-width: 570px; }
  .culture-hero-figure h2 { font-size: clamp(3.2rem, 15vw, 5.8rem); }
  .culture-carousel-viewport .culture-overlay-arrow { width: 40px; height: 40px; }
  .culture-overlay-arrow.is-previous { left: 10px; }
  .culture-overlay-arrow.is-next { right: 10px; }
  .culture-carousel-dots { bottom: 12px; }
  .method-index { grid-template-columns: 1fr; }
  .method-index li, .method-index li + li { min-height: 0; padding: 22px 0 28px; border-left: 0; }
  .method-index strong { margin: 26px 0 10px; }
  .numerical-section { grid-template-columns: 1fr; gap: 40px; }
  .numerical-stage { grid-template-columns: 1fr; }
  .example-number-grid { width: min(100%, 520px); margin: auto; }
  .label-section { width: 100%; padding-inline: 15px; }
  .label-equation { width: min(100%, 560px); grid-template-columns: minmax(0, 1fr) auto minmax(130px, 0.7fr); margin-inline: auto; }
  .lineage-ledger { grid-template-columns: 1fr; gap: 20px; }
  .lineage-primary { grid-template-columns: 150px 1fr; gap: 28px; }
  .lineage-index { border-top: 1px solid var(--line); border-left: 0; }
  .reveal-section { grid-template-columns: 1fr; }
  .offer-strip { align-items: flex-start; gap: 26px; }
  .measure-layout { grid-template-columns: 1fr; }
  .measure-card { padding-right: 0; }
  .analysis-context { padding: 42px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .numerical-reading-heading, .paywall-heading { grid-template-columns: 1fr; }
  .numerical-reading-heading .section-kicker { margin-bottom: -12px; }
  .analysis-gate { grid-template-columns: 1fr; }
  .analysis-button { grid-column: auto; grid-row: auto; }
  .report-layout { grid-template-columns: 1fr; }
  .report-toc { position: static; }
  .report-toc ol { display: grid; grid-template-columns: 1fr 1fr; }
  .report-header { grid-template-columns: 1fr 86px; }
  .report-totem-symbol { width: 82px; }
  .analysis-overlay { grid-template-columns: 1fr; gap: 20px; padding: 60px 24px 36px; }
  .loading-instrument { width: min(82vw, 380px); margin: auto; }
  .loading-copy { text-align: center; }
  footer { grid-template-columns: 1fr; gap: 24px; padding-inline: 20px; }
}

@media (max-width: 520px) {
  .hero-actions { align-items: stretch; flex-direction: column; }
  .hero-actions .primary-button { width: 100%; }
  .hero-archive-heading { display: block; }
  .hero-archive-heading small { display: block; margin-top: 7px; text-align: left; }
  .form-grid, .precision-body { grid-template-columns: 1fr; }
  .lineage-primary { grid-template-columns: 1fr; }
  .lineage-symbol { width: 150px; }
  .offer-strip { flex-direction: column; }
  .offer-strip .primary-button { width: 100%; }
  .measure-card { padding-top: 34px; }
  .result-heading { align-items: flex-start; flex-direction: column; }
  .chart-summary { grid-template-columns: 1fr 1fr; }
  .chart-summary span { min-height: 56px; }
  .number-insight-list, .locked-report-grid, .unlock-offers { grid-template-columns: 1fr; }
  .number-insight { min-height: 190px; grid-template-columns: 58px 1fr; padding: 24px 18px; }
  .number-insight-number { font-size: 3.3rem; }
  .report-paywall { width: calc(100% + 30px); margin-left: -15px; padding: 46px 20px; }
  .unlock-offer { min-height: 310px; }
  .soul-cluster-card { grid-template-columns: 72px 1fr; gap: 16px; }
  .action-item { grid-template-columns: 1fr; gap: 6px; }
  .report-toc ol { grid-template-columns: 1fr; }
  .dialog-columns { grid-template-columns: 1fr; gap: 0; }
  .dialog-correspondence { grid-template-columns: 1fr; }
  .dialog-correspondence span + span { padding-left: 0; border-top: 1px solid var(--line); border-left: 0; }
  .number-dialog { padding: 42px 22px 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .loading-links, .loading-tree, .loading-eye { stroke-dashoffset: 0; opacity: 0.75; }
  .loading-nodes circle { opacity: 1; transform: none; }
}

@media (forced-colors: active) {
  .primary-button, .header-cta, .submit-button, .analysis-button, .focus-chips button.is-active, .unlock-offer, .number-insight { border: 2px solid ButtonText; }
  .hero-grid, .example-number-grid, .number-grid, .culture-hero-figure { border: 1px solid CanvasText; }
}