/* Meridian: an editorial atlas with one bounded, demand-driven 3D study. */
/* The opening film's light: its three hero glows (main.css, "project-cinematic-hero"). */
.meridian-cinematic-hero { --project-hero-accent-rgb: 242, 176, 109; --project-hero-accent-2-rgb: 75, 209, 196; --project-hero-accent-3-rgb: 120, 150, 255; }
.theme-meridian {
  --experience-accent: #dfb68f;
  --meridian-paper: #eeeae2;
  --meridian-muted: #a4adba;
  --meridian-line: #becbdb24;
  --meridian-copper: #f2d4b5;
  --meridian-pill: #080d16d1;
  --color-ink: var(--meridian-paper);
  --color-ink-muted: var(--meridian-muted);
  --color-accent: var(--experience-accent);
  --max-width: 1240px;
  background: #070b13;
}
.theme-meridian::before { opacity: .035; }
.theme-meridian main::before, .theme-meridian main::after { display: none; }
.theme-meridian main > section { scroll-margin-top: calc(var(--experience-sticky-top, 126px) + 28px); }
.theme-meridian .eyebrow { color: #c2b09a; letter-spacing: var(--track-label); font-size: var(--text-label); font-weight: var(--heading-weight); text-shadow: none; }
.theme-meridian .meridian-cinematic-hero { --experience-accent: #dfb68f; }
.meridian-section-heading { display: grid; grid-template-columns: 1.2fr 1fr; gap: 2rem 6rem; align-items: end; }
.meridian-section-heading h2, .meridian-commons h2 { font-weight: var(--display-weight); font-size: clamp(3.1rem, 5.2vw, 5.1rem); line-height: 1.02; letter-spacing: var(--track-display); color: var(--meridian-paper); margin: .9rem 0 0; }
.meridian-section-heading > p { font-size: 1rem; line-height: 1.85; max-width: 37ch; color: var(--meridian-muted); margin: 0 0 .35rem; }
.meridian-atlas { padding-top: clamp(5rem, 9vw, 9rem); background: radial-gradient(ellipse at 25% 37%, #18213638, transparent 60%); }
.meridian-atlas > .meridian-section-heading { margin-bottom: 3.6rem; }
.meridian-atlas-runway { position: relative; }
.meridian-atlas-stage { padding: 1.5rem 0; position: relative; }
[data-atlas-renderer="webgl"][data-atlas-motion="active"] .meridian-atlas-runway,
[data-atlas-renderer="webgl"][data-atlas-motion="paused"] .meridian-atlas-runway { height: 190svh; }
[data-atlas-renderer="webgl"][data-atlas-motion="active"] .meridian-atlas-stage,
[data-atlas-renderer="webgl"][data-atlas-motion="paused"] .meridian-atlas-stage { position: sticky; top: var(--experience-sticky-top, 126px); height: calc(100svh - var(--experience-sticky-top, 126px)); min-height: 610px; display: flex; flex-direction: column; justify-content: center; }
/* Both columns hang from one top rule: the map's hairline and the reading column's border share a line. */
.meridian-atlas-layout { display: grid; grid-template-columns: minmax(0, 1fr) 310px; gap: clamp(2rem, 4vw, 4rem); align-items: start; }
.meridian-atlas-map { height: min(67svh, 690px); min-height: 480px; position: relative; overflow: clip; isolation: isolate; container-type: size; background: radial-gradient(ellipse at 49% 54%, #21304348 0%, #16213124 43%, transparent 72%); }
.meridian-atlas-map::before { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: linear-gradient(90deg, #b9c8dc33, #b9c8dc09); }
.meridian-atlas-map-head { position: absolute; top: 1rem; left: .1rem; right: .1rem; display: flex; align-items: baseline; justify-content: space-between; z-index: 3; font-size: var(--text-label); font-weight: var(--heading-weight); letter-spacing: var(--track-label); text-transform: uppercase; color: #aab5c4; pointer-events: none; }
.meridian-atlas-count { color: #dec5ad; font-size: .87rem; letter-spacing: var(--track-label); font-variant-numeric: tabular-nums; }
.meridian-atlas-count > span { color: #98a4b5; font-size: var(--text-floor); margin-left: .5rem; }
[data-atlas-canvas] { display: none; position: absolute; width: 100%; height: 100%; inset: 0; touch-action: pan-y pinch-zoom; cursor: grab; }
[data-atlas-canvas]:active { cursor: grabbing; }
[data-atlas-renderer="webgl"] [data-atlas-canvas] { display: block; }
[data-atlas-renderer="webgl"] .meridian-atlas-schematic { display: none; }

/* The still schematic (no WebGL): a 600 × 440 plane centred in the map, labels placed on the same plane. */
.meridian-atlas-schematic {
  position: absolute; inset: 0; margin: auto; z-index: 1;
  width: min(100cqw, (100cqh - 5.5rem) * 600 / 440); height: min(100cqh - 5.5rem, 100cqw * 440 / 600);
  color: #d4ebff;
}
.meridian-atlas-schematic svg { display: block; width: 100%; height: 100%; overflow: visible; }
.meridian-schematic-links path { stroke: #80bded; stroke-opacity: .34; stroke-width: 1; vector-effect: non-scaling-stroke; }
.meridian-schematic-links path.is-active { stroke: #ffb875; stroke-opacity: .85; stroke-width: 1.5; }
.meridian-schematic-node { fill: currentColor; opacity: .82; }
.meridian-schematic-node.is-selected { color: #ffb875; opacity: 1; }
.meridian-schematic-pearl { fill: currentColor; }
.meridian-schematic-label {
  position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, 2.6rem); white-space: nowrap;
  color: #b7c2cd; font-size: .75rem; line-height: 1;
}
.meridian-schematic-label.is-above { transform: translate(-50%, calc(-100% - 2.6rem)); }
.meridian-schematic-label.is-selected { color: var(--meridian-copper); }

/* Live labels follow the projected clouds (meridian-experience.js places them just outside each cloud). */
.meridian-atlas-node-labels { position: absolute; inset: 0; pointer-events: none; z-index: 2; }
.meridian-atlas-node {
  position: absolute; left: 0; top: 0; display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 30px; padding: .35rem .7rem; white-space: nowrap;
  font: inherit; font-size: max(var(--text-floor), .7rem); font-weight: var(--display-weight); line-height: 1; color: #c0cad4;
  border: 1px solid #becbdb2e; border-radius: 30px; background: var(--meridian-pill); pointer-events: auto; cursor: pointer;
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  transition: color var(--motion-quick) var(--ease-standard), border-color var(--motion-quick) var(--ease-standard), background-color var(--motion-quick) var(--ease-standard);
}
/* The hit area reaches 44px around the 30px pill. */
.meridian-atlas-node::before { content: ""; position: absolute; inset: -7px 0; }
.meridian-atlas-node[data-selected="true"] { color: var(--meridian-copper); border-color: #dab28e66; background: #15191fe6; }
.meridian-atlas-node:active { scale: .985; color: #fff1df; }
.meridian-atlas-map-foot { position: absolute; bottom: .7rem; left: 0; right: 0; display: flex; align-items: center; justify-content: space-between; z-index: 3; gap: 1rem; color: #94a0b1; font-size: var(--text-floor); pointer-events: none; }
.meridian-atlas-map-foot button, button[data-atlas-motion] {
  font: inherit; color: #c3ccd7; border: 0; background: transparent; min-height: 44px; cursor: pointer; padding: .5rem 0 .5rem 1rem;
  font-size: var(--text-label); pointer-events: auto;
  text-decoration: underline 1px transparent; text-underline-offset: .35em;
  transition: color var(--motion-quick) var(--ease-standard), text-decoration-color var(--motion-quick) var(--ease-standard);
}
.meridian-atlas-map-foot button[data-atlas-reset] { display: inline-flex; align-items: center; gap: .4rem; }
.meridian-atlas-map-foot button[data-atlas-reset] .icon { transition: rotate var(--motion-settle) var(--ease-standard); }
.meridian-atlas-map-foot button:active, button[data-atlas-motion]:active { color: #fff0df; scale: .985; }
.meridian-atlas-reading { border-top: 1px solid var(--meridian-line); padding-top: 1.15rem; min-height: 545px; }
.meridian-atlas-prompt { font-size: var(--text-caption); color: #9ba7b8; margin: 0 0 1rem; }
.meridian-atlas-topics { display: grid; grid-template-columns: 1fr 1fr; gap: .45rem; }
.meridian-atlas-topics button {
  min-width: 0; display: flex; align-items: center; gap: .55rem; min-height: 44px; padding: .65rem .7rem; border-radius: 5px;
  border: 1px solid #b7c7df1f; background: #11192570; font: inherit; font-size: .75rem; color: #aab6c5; text-align: left; cursor: pointer;
  transition: border-color var(--motion-quick) var(--ease-standard), color var(--motion-quick) var(--ease-standard), background var(--motion-quick) var(--ease-standard);
}
.meridian-atlas-topics button:active { scale: .985; background: #d5aa8018; }
.meridian-atlas-topics button[aria-pressed="true"] { color: var(--meridian-copper); border-color: #d5aa8059; background: #d5aa8012; }
.meridian-topic-dot { display: inline-block; width: 4px; height: 4px; border-radius: 50%; flex: 0 0 auto; background: #667d94; transition: background var(--motion-quick) var(--ease-standard), box-shadow var(--motion-quick) var(--ease-standard); }
[aria-pressed="true"] .meridian-topic-dot { background: #e6b58b; box-shadow: 0 0 10px #dfb68f4d; }
.meridian-atlas-details { margin-top: 2rem; }
.meridian-atlas-subtitle { font-size: var(--text-label); font-weight: var(--heading-weight); letter-spacing: var(--track-label); text-transform: uppercase; color: #b39c87; margin: 0 0 .7rem; }
.meridian-atlas-details h3 { font-family: var(--font-display); font-weight: var(--display-weight); font-size: 2.65rem; line-height: 1.1; letter-spacing: var(--track-title); color: #eee7dd; margin: 0 0 1.1rem; }
.meridian-atlas-question { min-height: 5.7em; color: #bac2cd; line-height: 1.8; font-size: .88rem; margin: 0; }
.meridian-atlas-related-label { margin: 1.8rem 0 .6rem; color: #97a2b2; font-size: var(--text-caption); }
.meridian-atlas-related button {
  display: flex; align-items: center; justify-content: space-between; gap: .8rem; width: 100%; min-height: 66px; padding: .8rem 0; border: 0;
  border-top: 1px solid #b1c1d523; background: none; font: inherit; color: #d2beab; text-align: left; cursor: pointer;
}
.meridian-atlas-related strong { display: block; color: #d9dfe5; font-size: .8rem; font-weight: var(--display-weight); transition: color var(--motion-quick) var(--ease-standard); }
.meridian-atlas-related small { display: block; color: #97a2b2; font-size: var(--text-floor); margin-top: .3rem; line-height: 1.5; }
.meridian-atlas-related .icon { transition: translate var(--motion-medium) var(--ease-standard); }
.meridian-atlas-related button:active strong { color: #f3d2af; }
.meridian-atlas-related button:active { scale: .985; }
.meridian-atlas-footer { display: flex; justify-content: space-between; align-items: center; gap: 2rem; margin-top: 1rem; border-top: 1px solid #becbdb15; min-height: 44px; }
.meridian-atlas-footer p { margin: 0; --study-disclosure-ink: #a0abbb; }
.meridian-atlas-static details { border-top: 1px solid var(--meridian-line); color: var(--meridian-muted); font-size: .86rem; }
.meridian-atlas-static summary { min-height: 44px; padding: .8rem 0; cursor: pointer; color: #eee7dc; transition: color var(--motion-quick) var(--ease-standard); }
.meridian-atlas-static details > p { line-height: 1.75; }
.meridian-atlas-static-links { color: #c4ad95; font-size: .75rem; }
.meridian-atlas [hidden] { display: none !important; }
.meridian-reading-guide { padding: clamp(5rem, 9vw, 9rem) 0; }
.meridian-reading-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 3.5rem; }
.meridian-reading-grid > div { border-top: 1px solid var(--meridian-line); padding-top: 1.5rem; }
.meridian-step-number { font-size: var(--text-label); color: #bca58c; letter-spacing: var(--track-label); font-variant-numeric: tabular-nums; }
.meridian-reading-grid h3 { font-weight: var(--display-weight); font-size: 1.34rem; letter-spacing: var(--track-heading); color: #dce2e8; margin: 2.5rem 0 1rem; }
.meridian-reading-grid p { font-size: .89rem; line-height: 1.8; color: #97a5b6; max-width: 32ch; margin: 0; }
.meridian-preview { padding: clamp(3rem, 7vw, 7rem) 0 clamp(5rem, 9vw, 9rem); border-top: 1px solid #becbdb1a; background: radial-gradient(ellipse at 95% 15%, #15263c45, transparent 55%); }
.meridian-preview .meridian-section-heading { margin-bottom: 3.8rem; }
.meridian-commons { padding: clamp(5rem, 10vw, 10rem) 0; border-top: 1px solid var(--meridian-line); background: radial-gradient(ellipse at 50% 45%, #583b221c, transparent 60%); }
.meridian-commons-copy { max-width: 50rem; margin-inline: auto; text-align: center; }
.meridian-commons h2 { font-size: clamp(2.8rem, 5.5vw, 5.1rem); margin-bottom: 2.3rem; }
.meridian-commons-copy > p:not(.eyebrow) { font-size: .98rem; line-height: 1.9; max-width: 52ch; color: var(--meridian-muted); margin: 1.1rem auto; }
.meridian-preview-note { display: flex; justify-content: center; gap: .75rem; align-items: baseline; max-width: 29rem; margin: 3rem auto 2rem; border-top: 1px solid var(--meridian-line); padding-top: 1.5rem; text-align: left; }
.meridian-preview-note > span { display: block; width: 5px; height: 5px; flex: 0 0 auto; border-radius: 50%; background: #bd9871; }
.meridian-preview-note p { font-size: .75rem; color: #97a3b3; line-height: 1.8; margin: 0; max-width: 43ch; }
.meridian-preview-note strong { color: #d9c3ac; font-weight: var(--display-weight); }
.meridian-policy-links { display: flex; gap: 1.5rem; padding-block: 1.5rem 3rem; }
.meridian-policy-links a, .meridian-related .section-heading > a {
  display: inline-flex; align-items: center; min-height: 44px; text-decoration: underline 1px transparent; text-underline-offset: .32em;
  transition: color var(--motion-quick) var(--ease-standard), text-decoration-color var(--motion-quick) var(--ease-standard);
}
.meridian-policy-links a { color: #94a1b2; font-size: .75rem; }
.theme-meridian .meridian-related { border-top: 1px solid var(--meridian-line); padding-block: 4rem 6rem; }
.meridian-related .section-heading h2 { font-weight: var(--display-weight); letter-spacing: var(--track-title); }
.meridian-related .section-heading > a { color: #bdc7d3; font-size: .78rem; gap: 1rem; }
.theme-meridian .meridian-related .project-related-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.theme-meridian .meridian-related .project-card { background: #111823; border-color: var(--meridian-line); box-shadow: none; border-radius: 10px; }
.theme-meridian .meridian-related .project-card h3 { font-weight: var(--display-weight); }

/* Hover (fine pointers) and keyboard focus look alike. */
.meridian-atlas-node:focus-visible { color: #fff1df; border-color: #dfb68f70; }
.meridian-atlas-topics button:focus-visible { border-color: #dfb68f70; color: #f4e2cd; }
.meridian-atlas-related button:focus-visible strong { color: #f3d2af; }
.meridian-atlas-related button:focus-visible .icon { translate: 2px -2px; }
.meridian-atlas-map-foot button:focus-visible, button[data-atlas-motion]:focus-visible,
.meridian-policy-links a:focus-visible, .meridian-related .section-heading > a:focus-visible { color: #fff0df; text-decoration-color: currentColor; }
.meridian-atlas-map-foot button[data-atlas-reset]:focus-visible .icon { rotate: -180deg; }
.meridian-atlas-static summary:focus-visible { color: var(--meridian-copper); }
@media (hover: hover) and (pointer: fine) {
  .meridian-atlas-node:hover { color: #fff1df; border-color: #dfb68f70; }
  .meridian-atlas-topics button:hover { border-color: #dfb68f70; color: #f4e2cd; }
  .meridian-atlas-related button:hover strong { color: #f3d2af; }
  .meridian-atlas-related button:hover .icon { translate: 2px -2px; }
  .meridian-atlas-map-foot button:hover, button[data-atlas-motion]:hover,
  .meridian-policy-links a:hover, .meridian-related .section-heading > a:hover { color: #fff0df; text-decoration-color: currentColor; }
  .meridian-atlas-map-foot button[data-atlas-reset]:hover .icon { rotate: -180deg; }
  .meridian-atlas-static summary:hover { color: var(--meridian-copper); }
}
@media (max-width: 1100px) {
  .meridian-section-heading { gap: 2rem 4rem; }
  .meridian-atlas-layout { grid-template-columns: minmax(0, 1fr) 285px; gap: 2rem; }
  .meridian-atlas-map { min-height: 440px; }
  .meridian-atlas-question { font-size: .82rem; }
  .meridian-atlas-node { padding-inline: .6rem; }
}
@media (max-width: 800px), (max-height: 780px) {
  [data-meridian-atlas] .meridian-atlas-runway { height: auto !important; }
  [data-meridian-atlas] .meridian-atlas-stage { position: relative !important; top: 0 !important; height: auto !important; min-height: 0 !important; }
}
@media (max-width: 800px) {
  .meridian-section-heading { grid-template-columns: 1fr; gap: 1.8rem; }
  .meridian-section-heading h2 { font-size: clamp(2.9rem, 7.5vw, 4.2rem); }
  .meridian-section-heading > p { font-size: .91rem; max-width: 44ch; }
  .meridian-desktop-break { display: none; }
  .meridian-atlas { padding-top: 4.5rem; }
  .meridian-atlas > .meridian-section-heading { margin-bottom: 2rem; }
  .meridian-atlas-layout { grid-template-columns: 1fr; gap: 2rem; }
  .meridian-atlas-map { height: min(65vw, 480px); min-height: 360px; }
  .meridian-atlas-reading { min-height: 0; padding-top: 1.3rem; }
  .meridian-atlas-topics { grid-template-columns: repeat(3, 1fr); }
  .meridian-atlas-details { margin-top: 1.6rem; }
  .meridian-atlas-details h3 { font-size: 2.4rem; }
  .meridian-atlas-question { min-height: 0; font-size: .92rem; max-width: 55ch; }
  .meridian-atlas-related { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
  .meridian-atlas-related-label { margin-top: 1.5rem; }
  .meridian-atlas-footer { margin-top: 2.2rem; }
  .meridian-reading-grid { gap: 1.7rem; }
  .meridian-reading-grid h3 { font-size: 1.1rem; }
  .meridian-reading-grid p { font-size: .8rem; }
}
@media (max-width: 520px) {
  /* Phones name the chosen field on the map; the chips below name the rest. */
  .meridian-atlas-node:not([data-selected="true"]) { display: none; }
  .meridian-atlas-map { min-height: 350px; }
  .meridian-schematic-label { font-size: var(--text-floor); transform: translate(-50%, 1.9rem); }
  .meridian-schematic-label.is-above { transform: translate(-50%, calc(-100% - 1.9rem)); }
  .meridian-atlas-topics button { font-size: .75rem; padding: .65rem .48rem; gap: .4rem; }
  .meridian-atlas-related { gap: 1.15rem; }
  .meridian-atlas-related button { align-items: start; min-height: 76px; }
  .meridian-atlas-related strong { font-size: .78rem; }
  .meridian-atlas-related small { line-height: 1.6; }
  .meridian-atlas-footer { align-items: center; gap: 1rem; }
  .meridian-atlas-footer p { max-width: 32ch; }
  button[data-atlas-motion] { white-space: nowrap; }
  .meridian-reading-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .meridian-reading-grid > div { display: grid; grid-template-columns: 30px 1fr; column-gap: 1rem; }
  .meridian-step-number { grid-row: span 2; padding-top: .35rem; }
  .meridian-reading-grid h3 { margin: 0 0 .8rem; font-size: 1.3rem; }
  .meridian-reading-grid p { grid-column: 2; font-size: .86rem; max-width: 40ch; }
  .meridian-preview .meridian-section-heading { margin-bottom: 2.7rem; }
  .meridian-commons h2 { font-size: 2.8rem; }
  .theme-meridian .meridian-related .project-related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 380px) {
  .meridian-atlas-topics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  [data-meridian-atlas] .meridian-atlas-runway { height: auto !important; }
  [data-meridian-atlas] .meridian-atlas-stage { position: relative !important; top: 0 !important; height: auto !important; min-height: 0 !important; }
  .meridian-atlas *, .meridian-atlas *::before { transition: none !important; animation: none !important; }
}
@media (forced-colors: active) {
  /* The canvas never runs here (the script keeps the fallback); the schematic draws in system colours. */
  [data-atlas-canvas] { display: none !important; }
  .meridian-atlas-schematic { display: block !important; color: CanvasText; }
  .meridian-schematic-links path { stroke: CanvasText; stroke-opacity: 1; stroke-dasharray: 3 4; }
  .meridian-schematic-links path.is-active { stroke: Highlight; stroke-dasharray: none; stroke-width: 2; }
  .meridian-schematic-node.is-selected { color: Highlight; }
  .meridian-schematic-label.is-selected { color: Highlight; }
  [data-meridian-atlas] .meridian-atlas-runway { height: auto !important; }
  [data-meridian-atlas] .meridian-atlas-stage { position: relative !important; top: 0 !important; height: auto !important; min-height: 0 !important; }
  .meridian-atlas-layout { display: block; }
  .meridian-atlas-map { height: auto; min-height: 0; aspect-ratio: 600 / 520; max-height: 560px; margin-bottom: 2rem; }
  .meridian-atlas-topics button[aria-pressed="true"] { outline: 2px solid Highlight; }
}