/* How to Live an Asymmetric Life.
   Palette, surfaces, type roles and motion come from the site system; the
   course adds only its composition. Figures are styled here by class, so
   every drawing follows the same gold, ink and hatching. */
#page-asymmetric {
 --al-ink: var(--parchment, #f4e4c1);
 --al-text: var(--ink, #e8d9b5);
 --al-soft: var(--ink-soft, #d4c49e);
 --al-gold: var(--gold, #c9a961);
 --al-bright: var(--gold-bright, #d4af37);
 --al-line: var(--gold-a18, rgb(201 169 97 / .18));
 --al-line-strong: var(--gold-a35, rgb(201 169 97 / .35));
 --al-tint: var(--gold-a10, rgb(201 169 97 / .10));
 --al-wash: var(--gold-a04, rgb(201 169 97 / .04));
 --al-s1: var(--surface-1, #16110a);
 --al-s2: var(--surface-2, #1d1710);
 --al-shadow: var(--shadow-2, 0 1px 2px rgb(0 0 0 / .45), 0 18px 40px -20px rgb(0 0 0 / .85));
 --al-edge: var(--edge-light, inset 0 1px 0 rgb(201 169 97 / .10));
 --al-bad: #e9ab8b;
 --al-bad-line: rgb(233 171 139 / .5);
 --al-bad-wash: rgb(233 171 139 / .07);
 --al-ease: var(--ease, cubic-bezier(.2, 0, 0, 1));
 --al-quick: 180ms;
 --al-radius: var(--radius, 2px);
 --al-space: var(--section-space, clamp(3.25rem, 5.5vw, 5.25rem));
 color: var(--al-text);
 font-family: var(--serif-body);
}
#page-asymmetric *, #al-reset-dialog * { box-sizing: border-box; }
#page-asymmetric :is(h1, h2, h3), #al-reset-dialog h2 { margin: 0; color: var(--al-ink); font-family: var(--serif-head); font-weight: 400; line-height: 1.15; text-wrap: balance; }
#page-asymmetric p { margin: 0; text-wrap: pretty; }
#page-asymmetric a { color: var(--al-ink); text-decoration-color: var(--al-line-strong); text-underline-offset: .22em; transition: color var(--al-quick) var(--al-ease), text-decoration-color var(--al-quick) var(--al-ease); }
#page-asymmetric a:hover { color: var(--al-bright); text-decoration-color: currentColor; }
#page-asymmetric :is(a, button, input, textarea, summary):focus-visible { outline: 2px solid var(--al-bright); outline-offset: 3px; }
#page-asymmetric [tabindex="-1"]:focus { outline: none; }
#page-asymmetric .al-eyebrow { margin: 0 0 .9rem; padding-inline: 0; text-indent: 0; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .14em; text-align: left; font-variant-numeric: lining-nums tabular-nums; }
.al-shell { width: 100%; max-width: var(--shell, 1240px); margin-inline: auto; padding-inline: var(--gutter, clamp(1.25rem, 4vw, 3rem)); }
.al-sr { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.al-interactive, .al-count { display: none; }
.al-ready .al-interactive { display: block; }
.al-ready .al-count { display: inline; }
.al-ready .al-nojs { display: none; }
#page-asymmetric .al-icon { flex: none; width: 1.15em; height: 1.15em; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.al-skip { position: absolute; left: 1rem; top: 0; z-index: 150; padding: .75rem 1rem; background: var(--al-s2); transform: translateY(-120%); }
.al-skip:focus { transform: translateY(calc(var(--header-height, 0px) + .5rem)); }

/* Buttons. The course sets its own font because the shared token is
   currently overwritten by a duration in system.css. */
#page-asymmetric .button, #al-reset-dialog .button { font: 1rem/1.3 var(--serif-body); white-space: normal; text-align: center; transition-property: background-color, border-color, color, transform; transition-duration: var(--al-quick); transition-timing-function: var(--al-ease); }
#page-asymmetric .button:active:not(:disabled), #al-reset-dialog .button:active { transform: scale(.96); }
#page-asymmetric .button .al-icon { width: 1.05em; height: 1.05em; }
#page-asymmetric .button.primary, #page-asymmetric .button.primary:hover, #al-reset-dialog .button.primary { color: #100d08; }
#page-asymmetric .button:disabled { opacity: .4; cursor: default; }
#page-asymmetric .button:not(.primary):not(.tertiary):disabled:hover { background: #151109; }
.al-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.75rem; }

/* Hero */
.al-hero { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr); gap: clamp(2rem, 5vw, 5rem); align-items: center; padding-block: var(--al-space) calc(var(--al-space) * .8); }
#page-asymmetric .al-hero h1 { margin-bottom: 1.4rem; font-size: clamp(2.6rem, 5.1vw, 4.6rem); line-height: 1.02; letter-spacing: -.02em; }
#page-asymmetric .al-hero h1 em { display: block; color: var(--al-gold); font-style: italic; }
#page-asymmetric .al-deck { margin-bottom: 1.1rem; color: var(--al-ink); font-family: var(--serif-head); font-size: clamp(1.45rem, 2.3vw, 1.95rem); line-height: 1.25; }
#page-asymmetric .al-lead { max-width: var(--measure-lead, 52ch); color: var(--al-soft); font-size: var(--t-read, 1.25rem); line-height: 1.6; }
.al-stats { display: flex; flex-wrap: wrap; row-gap: 1rem; margin: 2.25rem 0 0; padding: 0; }
.al-stats > div { display: flex; flex-direction: column-reverse; gap: .3rem; padding: .1rem 1.25rem; border-left: 1px solid var(--al-line); }
.al-stats > div:first-child { padding-left: 0; border-left: 0; }
.al-stats dd { margin: 0; color: var(--al-ink); font-family: var(--serif-body); font-size: 2.15rem; line-height: 1; font-variant-numeric: lining-nums tabular-nums; }
.al-stats dt { color: var(--al-soft); font-size: var(--t-label, .8rem); letter-spacing: .1em; text-transform: uppercase; }
#page-asymmetric .al-facts { margin-top: 1.1rem; color: var(--al-soft); font-size: 1rem; }
.al-frontispiece { margin: 0; padding: clamp(1rem, 2vw, 1.75rem); background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-shadow), var(--al-edge); }
.al-frontispiece figcaption { margin-top: 1rem; padding-top: .9rem; border-top: 1px solid var(--al-tint); color: var(--al-soft); font-size: 1rem; font-style: italic; line-height: 1.55; }
.al-hero-copy > *, .al-frontispiece { animation: riseIn var(--motion-time, 400ms) var(--al-ease) both; }
.al-hero-copy > :nth-child(2) { animation-delay: 60ms; }
.al-hero-copy > :nth-child(3) { animation-delay: 120ms; }
.al-hero-copy > :nth-child(4) { animation-delay: 180ms; }
.al-hero-copy > :nth-child(n+5) { animation-delay: 240ms; }
.al-frontispiece { animation-delay: 180ms; }

/* Drawings: one ink, one hatch, one label system for the hero and all figures. */
#page-asymmetric :is(.al-hero-art, .al-figure-art) { display: block; width: 100%; height: auto; overflow: visible; fill: none; stroke: none; }
#page-asymmetric svg text { fill: var(--al-ink); font-family: var(--serif-body); }
#page-asymmetric svg .al-label { font-size: 17px; }
#page-asymmetric svg .al-note { fill: var(--al-soft); font-size: 15px; font-style: italic; }
#page-asymmetric svg .al-strong { fill: var(--al-gold); font-size: 17px; }
#page-asymmetric svg .al-small { fill: var(--al-soft); font-size: 11.5px; letter-spacing: .12em; text-transform: uppercase; }
#page-asymmetric svg .al-caps { fill: var(--al-gold); font-size: 12.5px; letter-spacing: .16em; text-transform: uppercase; }
#page-asymmetric svg .al-rule { stroke: var(--al-line-strong); stroke-width: 1; }
#page-asymmetric svg .al-grid { stroke: var(--al-tint); stroke-width: .75; }
#page-asymmetric svg .al-frame { stroke: var(--al-line-strong); stroke-width: 1.25; }
#page-asymmetric svg .al-divider { stroke: var(--al-line); stroke-width: 1; stroke-dasharray: 2 5; }
#page-asymmetric svg .al-aux { stroke: var(--al-soft); stroke-opacity: .7; stroke-width: 1.25; stroke-dasharray: 4 5; }
#page-asymmetric svg .al-ink { stroke: var(--al-gold); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
#page-asymmetric svg .al-thick { stroke-width: 2.75; }
#page-asymmetric svg .al-hero-line { stroke-width: 3.25; }
#page-asymmetric svg .al-quiet { stroke: var(--al-soft); stroke-opacity: .55; stroke-width: 1.75; stroke-linecap: round; }
#page-asymmetric svg .al-dashed { stroke-dasharray: 6 6; }
#page-asymmetric svg .al-hatch { stroke: var(--al-line-strong); stroke-width: 1.2; }
#page-asymmetric svg .al-hatch-bad { stroke: var(--al-bad-line); stroke-width: 1.1; }
#page-asymmetric svg .al-ruin { stroke: var(--al-bad-line); stroke-width: 1; }
#page-asymmetric svg .al-tag { fill: var(--al-s1); }
#page-asymmetric svg .al-bar { fill: var(--al-s2); stroke: var(--al-gold); stroke-width: 1.5; }
#page-asymmetric svg .al-plate { stroke: var(--al-gold); stroke-width: 1.5; }
#page-asymmetric svg .al-solid { fill: var(--al-s2); }
#page-asymmetric svg .al-collar { fill: var(--al-gold); }
#page-asymmetric svg .al-ghost { stroke: var(--al-soft); stroke-opacity: .55; stroke-width: 1.25; stroke-dasharray: 3 4; }
#page-asymmetric svg .al-token { fill: var(--al-s2); stroke: var(--al-gold); stroke-width: 1.75; }
#page-asymmetric svg .al-centre { fill: var(--al-tint); stroke-width: 2.25; }
#page-asymmetric svg .al-trial { stroke-width: 1.25; }
#page-asymmetric svg .al-dot { fill: var(--al-ink); }
#page-asymmetric svg .al-dot-bad, #page-asymmetric svg .al-shock { fill: var(--al-bad); }
#page-asymmetric svg .al-safe { stroke: var(--al-gold); stroke-width: 5; stroke-linecap: round; }
#page-asymmetric svg .al-glyph { stroke: var(--al-gold); stroke-width: 1.5; stroke-linecap: round; }
#page-asymmetric svg .al-hit { stroke: var(--al-bad); stroke-width: 1.25; stroke-dasharray: 3 4; }
#page-asymmetric svg .al-hit-line { stroke: var(--al-bad); stroke-opacity: .75; stroke-width: 1.25; stroke-dasharray: 5 5; }
#page-asymmetric svg .al-arrowhead { fill: none; stroke: var(--al-gold); stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }

/* Orientation */
.al-orientation { padding-bottom: calc(var(--al-space) * .7); }
.al-orientation-panel { display: grid; grid-template-columns: 1fr 1fr; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-edge); }
#page-asymmetric .al-orientation-panel p { display: flex; gap: 1rem; padding: 1.4rem 1.6rem; color: var(--al-soft); font-size: 1.05rem; line-height: 1.6; }
.al-orientation-panel p + p { border-left: 1px solid var(--al-line); }
#page-asymmetric .al-orientation-panel .al-icon { width: 1.6rem; height: 1.6rem; margin-top: .15rem; color: var(--al-gold); }
.al-orientation strong { display: block; margin-bottom: .25rem; color: var(--al-ink); font-family: var(--serif-head); font-size: 1.15rem; font-weight: 400; }
.al-notice { margin-block: 1rem; padding-block: 1rem; color: var(--al-soft); }

/* Section heads, shared by the map and every supplement */
.al-section-head { max-width: 46rem; margin-bottom: 2.25rem; }
#page-asymmetric .al-section-head h2 { margin-bottom: .75rem; font-size: var(--t-h1, clamp(2.2rem, 3.4vw, 3rem)); }
#page-asymmetric .al-section-head > p:not(.al-eyebrow) { max-width: var(--measure-prose, 68ch); color: var(--al-soft); font-size: var(--t-body, 1.15rem); line-height: 1.65; }

/* Course map */
.al-map { padding-block: var(--al-space); border-top: 1px solid var(--al-tint); }
.al-units { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; }
.al-unit { display: flex; flex-direction: column; padding: 1.2rem 1.25rem .6rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-edge); }
.al-unit-finish { background: transparent; border-style: dashed; box-shadow: none; }
#page-asymmetric .al-unit-head { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: .45rem; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .14em; text-transform: uppercase; font-variant-numeric: lining-nums tabular-nums; }
.al-unit-head .al-count { color: var(--al-soft); letter-spacing: .06em; }
#page-asymmetric .al-unit h3 { min-height: 2.4em; margin-bottom: .8rem; font-size: 1.3rem; line-height: 1.2; }
.al-unit :is(ol, ul) { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--al-tint); }
.al-unit li + li { border-top: 1px solid var(--al-tint); }
#page-asymmetric .al-unit a { display: grid; grid-template-columns: 1.7rem minmax(0, 1fr) auto; align-items: center; gap: .5rem; min-height: 44px; padding: .4rem 0; font-size: 1.05rem; line-height: 1.3; text-decoration: none; }
.al-unit-finish a { grid-template-columns: minmax(0, 1fr) !important; }
.al-num { color: var(--al-soft); font-size: .8rem; letter-spacing: .04em; font-variant-numeric: lining-nums tabular-nums; }
.al-status { width: .8rem; height: .8rem; border: 1.5px solid var(--al-line-strong); border-radius: 50%; transition: background-color var(--al-quick) var(--al-ease), border-color var(--al-quick) var(--al-ease); }
[data-status="current"] .al-status { border-color: var(--al-gold); background: var(--al-gold); box-shadow: inset 0 0 0 2.5px var(--al-s1); }
[data-status="done"] .al-status { border-color: var(--al-gold); background: var(--al-gold); }
#page-asymmetric [data-status="current"] .al-map-title { color: var(--al-bright); }

/* Workspace: progress on the left, one lesson at a time on the right */
.al-workspace { display: grid; grid-template-columns: 17.5rem minmax(0, 1fr); gap: clamp(2rem, 4vw, 4rem); align-items: start; padding-block: var(--al-space); border-top: 1px solid var(--al-tint); }
.al-sidebar { position: sticky; top: calc(var(--header-height, 0px) + 1.25rem); max-height: calc(100vh - var(--header-height, 0px) - 2.5rem); overflow: auto; overscroll-behavior: contain; padding-right: .35rem; scrollbar-width: thin; scrollbar-color: var(--al-line) transparent; }
.al-progress-card { padding: 1.1rem 1.1rem .5rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-edge); }
#page-asymmetric .al-progress-card h2 { color: var(--al-gold); font-family: var(--serif-body); font-size: var(--t-label, .8rem); letter-spacing: .14em; text-transform: uppercase; }
#page-asymmetric .al-progress-figure { display: flex; align-items: baseline; gap: .5rem; margin-top: .55rem; }
#al-progress-count { color: var(--al-ink); font-family: var(--serif-body); font-size: 2.6rem; line-height: 1; font-variant-numeric: lining-nums tabular-nums; }
.al-progress-figure span + span { color: var(--al-soft); font-size: 1.05rem; }
#al-progress-label { display: block; color: var(--al-soft); font-size: .95rem; }
#al-progress { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.al-meter { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 5px; margin: .85rem 0 .9rem; }
.al-meter-unit { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 2px; }
.al-meter-unit span { height: 6px; background: var(--al-tint); transition: background-color var(--al-quick) var(--al-ease); }
.al-meter-unit [data-state="current"] { background: var(--al-line-strong); box-shadow: inset 0 -2px 0 var(--al-bright); }
.al-meter-unit [data-state="done"] { background: var(--al-gold); }
#page-asymmetric #al-storage { color: var(--al-soft); font-size: .88rem; line-height: 1.45; }
.al-text-button { min-height: 44px; padding: 0; background: none; border: 0; color: var(--al-soft); font: .95rem/1.3 var(--serif-body); text-decoration: underline; text-decoration-color: var(--al-line-strong); text-underline-offset: .25em; cursor: pointer; transition: color var(--al-quick) var(--al-ease); }
.al-text-button:hover { color: var(--al-bright); }
.al-nav { margin-top: 1rem; }
.al-nav details { border-top: 1px solid var(--al-tint); }
.al-nav details:last-child { border-bottom: 1px solid var(--al-tint); }
#page-asymmetric .al-nav summary { display: grid; grid-template-columns: 1.6rem minmax(0, 1fr) auto; align-items: center; gap: .55rem; min-height: 48px; padding: .55rem .25rem; color: var(--al-ink); font-size: 1rem; line-height: 1.3; list-style: none; cursor: pointer; }
.al-nav summary::-webkit-details-marker { display: none; }
.al-nav summary:hover { color: var(--al-bright); }
.al-unit-num { display: grid; place-items: center; width: 1.45rem; height: 1.45rem; border: 1px solid var(--al-line-strong); border-radius: 50%; color: var(--al-gold); font-size: .78rem; font-variant-numeric: lining-nums; }
.al-nav details[open] .al-unit-num { background: var(--al-tint); }
.al-nav summary .al-count { color: var(--al-soft); font-size: .78rem; font-variant-numeric: lining-nums tabular-nums; }
.al-nav ol { margin: 0 0 .5rem; padding: 0; list-style: none; }
#page-asymmetric .al-nav a { display: grid; grid-template-columns: 1.6rem minmax(0, 1fr) .75rem; align-items: center; gap: .55rem; min-height: 40px; padding: .4rem .25rem .4rem .45rem; border-left: 2px solid transparent; color: var(--al-soft); font-size: .98rem; line-height: 1.3; text-decoration: none; }
#page-asymmetric .al-nav a:hover { color: var(--al-ink); background: var(--al-wash); }
#page-asymmetric .al-nav a[aria-current="step"] { color: var(--al-ink); background: var(--al-tint); border-left-color: var(--al-gold); }
.al-lesson-mark { width: .75rem; height: .75rem; overflow: hidden; border: 1.5px solid var(--al-line-strong); border-radius: 50%; color: transparent; font-size: 0; }
.al-lesson-mark[data-done="true"] { background: var(--al-gold); border-color: var(--al-gold); }
.al-tools { display: grid; margin-top: 1rem; }
#page-asymmetric .al-tools a { display: flex; align-items: center; gap: .6rem; min-height: 40px; padding: .3rem .25rem; color: var(--al-soft); font-size: .98rem; text-decoration: none; }
#page-asymmetric .al-tools a .al-icon { color: var(--al-gold); }
#page-asymmetric .al-tools a:hover { color: var(--al-bright); }

/* Lesson */
.al-lessons { min-width: 0; }
.al-lesson { min-width: 0; max-width: 50rem; margin-bottom: 3.5rem; padding-bottom: 3.5rem; border-bottom: 1px solid var(--al-line); }
.al-ready .al-lesson { margin-bottom: 0; padding-bottom: 0; border-bottom: 0; animation: riseIn var(--motion-time, 400ms) var(--al-ease) both; }
.al-lesson-head { margin-bottom: 2rem; padding-bottom: 1.4rem; border-bottom: 1px solid var(--al-line); }
.al-kicker { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
#page-asymmetric .al-maplink { display: none; font-size: .95rem; white-space: nowrap; }
#page-asymmetric .al-lesson h2 { margin-bottom: 1.1rem; font-size: clamp(2.2rem, 3.8vw, 3.2rem); line-height: 1.05; letter-spacing: -.01em; }
#page-asymmetric .al-objective { max-width: var(--measure-lead, 52ch); color: var(--al-ink); font-size: var(--t-read, 1.25rem); line-height: 1.5; }
.al-objective span { display: block; margin-bottom: .25rem; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .12em; text-transform: uppercase; }
.al-lesson-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .6rem 1.5rem; margin-top: 1.2rem; }
#page-asymmetric .al-chapter { display: inline-flex; align-items: center; gap: .5rem; min-height: 40px; color: var(--al-soft); font-size: 1rem; text-decoration: none; }
#page-asymmetric .al-chapter .al-icon { color: var(--al-gold); }
#page-asymmetric .al-chapter:hover { color: var(--al-bright); }
#page-asymmetric .al-mastery { align-items: center; gap: .5rem; padding: .3rem .8rem .3rem .6rem; border: 1px solid var(--al-line); border-radius: 999px; color: var(--al-soft); font-size: .92rem; transition: color var(--al-quick) var(--al-ease), border-color var(--al-quick) var(--al-ease), background-color var(--al-quick) var(--al-ease); }
.al-ready .al-mastery { display: inline-flex; }
.al-mastery::before { content: ""; width: .7rem; height: .7rem; border: 1.5px solid var(--al-line-strong); border-radius: 50%; }
#page-asymmetric .al-mastery[data-mastered="true"] { color: var(--al-ink); background: var(--al-tint); border-color: var(--al-gold); }
.al-mastery[data-mastered="true"]::before { background: var(--al-gold); border-color: var(--al-gold); }
.al-prose { max-width: var(--measure-prose, 68ch); }
#page-asymmetric .al-prose p { margin-bottom: 1.3rem; color: var(--al-text); font-size: var(--t-read, 1.25rem); line-height: 1.72; }
#page-asymmetric .al-prose p:first-child::first-letter { float: left; margin: .1em .1em 0 0; color: var(--al-gold); font-family: var(--serif-head); font-size: 3.35em; line-height: .8; }

/* Figures */
.al-diagram { margin: 2.25rem 0; padding: 1.3rem clamp(1rem, 2.4vw, 1.75rem) 1rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-shadow), var(--al-edge); }
.al-diagram figcaption { max-width: var(--measure-prose, 68ch); color: var(--al-soft); font-size: 1.05rem; line-height: 1.55; }
.al-diagram-label { display: block; margin-bottom: .3rem; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .14em; text-transform: uppercase; }
.al-diagram-stage { display: grid; gap: 1.1rem; margin: 1.1rem 0 .25rem; }
.al-figure-art { padding-block: .5rem; }
.al-scroll-hint { display: none; }
.al-diagram-steps { display: grid; gap: .55rem; margin: 0; padding: 0; list-style: none; counter-reset: al-step; }
.al-diagram-steps li { display: grid; grid-template-columns: 1.5rem minmax(0, 1fr); align-items: start; gap: .6rem; color: var(--al-soft); font-size: 1rem; line-height: 1.5; counter-increment: al-step; transition: color var(--al-quick) var(--al-ease), opacity var(--al-quick) var(--al-ease); }
.al-diagram-steps li::before { content: counter(al-step); display: grid; place-items: center; width: 1.5rem; height: 1.5rem; margin-top: .05rem; border: 1px solid var(--al-line-strong); border-radius: 50%; color: var(--al-gold); font-size: .8rem; font-variant-numeric: lining-nums; transition: background-color var(--al-quick) var(--al-ease), color var(--al-quick) var(--al-ease); }
.al-diagram-steps li[data-state="todo"] { opacity: .62; }
#page-asymmetric .al-diagram-steps li[data-state="current"] { color: var(--al-ink); }
.al-diagram-steps li[data-state="current"]::before { background: var(--al-gold); border-color: var(--al-gold); color: #100d08; }
.al-diagram-steps li[data-state="done"]::before { border-color: var(--al-gold); }
.al-ready [data-layer] { transition: opacity var(--motion-time, 400ms) var(--al-ease); }
.al-ready [data-layer].is-hidden { opacity: .09; }
.al-ready [data-layer].is-hidden text { opacity: 0; }
.al-ready .al-diagram-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin: 1.1rem 0 .8rem; padding-top: 1rem; border-top: 1px solid var(--al-tint); }
#page-asymmetric .al-diagram-controls [data-diagram-all] { min-height: 44px; margin-left: auto; }
.al-diagram small { display: block; color: var(--al-soft); font-size: .9rem; line-height: 1.5; }

/* Callouts: three shapes, so the role reads before the words */
.al-callouts { display: grid; gap: 1rem; margin: 2.25rem 0; }
.al-callout { padding: 1.25rem 1.4rem 1.35rem; border-radius: var(--al-radius); }
#page-asymmetric .al-callout h3 { display: flex; align-items: center; gap: .6rem; margin-bottom: .55rem; font-size: 1.3rem; }
#page-asymmetric .al-callout h3 .al-icon { width: 1.35rem; height: 1.35rem; color: var(--al-gold); }
#page-asymmetric .al-callout p { font-size: var(--t-body, 1.15rem); line-height: 1.65; }
.al-example { background: var(--al-s1); border: 1px solid var(--al-line); box-shadow: var(--al-edge); }
.al-pitfall { background: var(--al-bad-wash); border-left: 3px solid var(--al-bad); }
#page-asymmetric .al-pitfall h3 .al-icon { color: var(--al-bad); }
.al-application { border: 1px dashed var(--al-line-strong); }

/* Practice */
.al-practice { margin: 2.75rem 0 2rem; padding-top: 2rem; border-top: 1px solid var(--al-line); }
.al-practice-head { margin-bottom: 1.25rem; }
#page-asymmetric .al-practice-head h3 { margin-bottom: .45rem; font-size: var(--t-h2, 1.9rem); }
#page-asymmetric .al-practice-head p:not(.al-eyebrow) { color: var(--al-soft); font-size: var(--t-body, 1.15rem); }
.al-question { min-width: 0; margin: 0 0 1rem; padding: 1.2rem 1.25rem 1.1rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); transition: border-color var(--al-quick) var(--al-ease); }
.al-question legend { float: left; display: flex; gap: .7rem; width: 100%; margin-bottom: .9rem; padding: 0; color: var(--al-ink); font-size: 1.18rem; line-height: 1.45; }
.al-question legend + * { clear: both; }
.al-q-num { display: grid; flex: none; place-items: center; width: 1.7rem; height: 1.7rem; border: 1px solid var(--al-line-strong); border-radius: 50%; color: var(--al-gold); font-size: .85rem; font-variant-numeric: lining-nums; }
.al-options { display: grid; gap: .5rem; }
.al-option { display: grid; grid-template-columns: auto auto minmax(0, 1fr) auto; align-items: center; gap: .75rem; min-height: 52px; padding: .6rem 1rem .6rem .8rem; background: var(--al-s2); border: 1px solid var(--al-tint); border-radius: var(--al-radius); color: var(--al-text); font-size: 1.08rem; line-height: 1.45; cursor: pointer; transition: border-color var(--al-quick) var(--al-ease), background-color var(--al-quick) var(--al-ease); }
.al-option:hover { border-color: var(--al-line-strong); }
.al-option input { appearance: none; width: 1.15rem; height: 1.15rem; margin: 0; background: transparent; border: 1.5px solid var(--al-line-strong); border-radius: 50%; cursor: pointer; transition: border-color var(--al-quick) var(--al-ease), background-color var(--al-quick) var(--al-ease); }
.al-option input:checked { background: var(--al-gold); border-color: var(--al-gold); box-shadow: inset 0 0 0 3px var(--al-s2); }
.al-option-key { color: var(--al-soft); font-size: .8rem; letter-spacing: .08em; font-variant-numeric: lining-nums; }
.al-option:has(input:checked) { background: var(--al-tint); border-color: var(--al-gold); }
.al-option:has(input:disabled) { cursor: default; }
.al-option:has(input:disabled):not([data-result]) { opacity: .6; }
.al-option[data-result]::after { font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; white-space: nowrap; }
.al-question .al-option[data-result="answer"] { background: var(--al-tint); border-color: var(--al-gold); }
.al-option[data-result="answer"]::after { content: "Answer"; color: var(--al-gold); }
.al-question .al-option[data-result="wrong"] { background: var(--al-bad-wash); border-color: var(--al-bad-line); }
.al-option[data-result="wrong"]::after { content: "Your choice"; color: var(--al-bad); }
.al-question .al-option[data-result="wrong"] input:checked { background: var(--al-bad); border-color: var(--al-bad); }
#page-asymmetric .al-feedback { display: flex; align-items: center; gap: .55rem; margin: .9rem 0 .2rem; color: var(--al-bad); font-size: 1.02rem; }
#page-asymmetric :is(.al-feedback, .al-explanation)[hidden] { display: none; }
#page-asymmetric .al-feedback::before { content: ""; flex: none; width: .5rem; height: .5rem; background: currentColor; transform: rotate(45deg); }
#page-asymmetric .al-feedback[data-correct="true"] { color: var(--al-gold); }
#page-asymmetric .al-feedback[data-correct="true"]::before { border-radius: 50%; transform: none; }
#page-asymmetric .al-explanation { padding-left: 1.05rem; color: var(--al-soft); font-size: 1.02rem; line-height: 1.55; }
.al-question[data-result="correct"] { border-color: var(--al-line-strong); }
.al-question[data-result="incorrect"] { border-color: var(--al-bad-line); }
.al-quiz-footer { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem; margin-top: 1.25rem; }
.al-quiz-footer .al-actions { margin: 0; }
#page-asymmetric .al-quiz-feedback { flex: 1 1 18rem; color: var(--al-soft); font-size: 1.05rem; line-height: 1.5; }
#page-asymmetric .al-quiz-feedback:empty { display: none; }
#page-asymmetric .al-quiz[data-score] .al-quiz-feedback { padding: .75rem 1rem; background: var(--al-bad-wash); border-left: 3px solid var(--al-bad); color: var(--al-ink); }
#page-asymmetric .al-quiz[data-score="3"] .al-quiz-feedback { background: var(--al-tint); border-left-color: var(--al-gold); }
.al-practice .al-nojs { padding-left: 1.4rem; }
.al-practice .al-nojs li { margin-bottom: 1rem; }
#page-asymmetric .al-practice .al-nojs p { font-size: 1.1rem; line-height: 1.6; }
#page-asymmetric .al-nojs summary { min-height: 44px; padding: .5rem 0; color: var(--al-gold); cursor: pointer; }
#page-asymmetric .al-source { margin: 1.5rem 0; font-size: 1rem; overflow-wrap: anywhere; }
#page-asymmetric .al-source a { color: var(--al-soft); }
.al-lesson-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding-top: 1.5rem; border-top: 1px solid var(--al-line); }
#page-asymmetric .al-pager { display: grid; align-content: center; gap: .3rem; min-height: 5rem; padding: 1rem 1.2rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); text-decoration: none; transition: border-color var(--al-quick) var(--al-ease), background-color var(--al-quick) var(--al-ease); }
#page-asymmetric .al-pager:hover { background: var(--al-s2); border-color: var(--al-gold); }
.al-pager-dir { display: inline-flex; align-items: center; gap: .45rem; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .12em; text-transform: uppercase; }
.al-pager-title { color: var(--al-ink); font-family: var(--serif-head); font-size: 1.3rem; line-height: 1.2; }
#page-asymmetric .al-pager-next { justify-items: end; text-align: right; }
#page-asymmetric .al-pager-primary { background: var(--al-gold); border-color: var(--al-gold); }
#page-asymmetric .al-pager-primary:hover { background: var(--al-ink); border-color: var(--al-ink); }
#page-asymmetric .al-pager-primary :is(.al-pager-dir, .al-pager-title) { color: #100d08; }

/* Notebook, assessment, reference */
.al-supplement { padding-block: var(--al-space); border-top: 1px solid var(--al-tint); }
.al-split { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: clamp(2rem, 5vw, 4.5rem); align-items: start; }
.al-narrow > * { max-width: 52rem; }
.al-protocol { margin: 1.75rem 0 0; padding: 0; list-style: none; border-top: 1px solid var(--al-line); counter-reset: al-protocol; }
.al-protocol li { display: grid; grid-template-columns: 2.25rem 6.5rem minmax(0, 1fr); align-items: baseline; gap: .5rem; padding: .8rem 0; border-bottom: 1px solid var(--al-line); counter-increment: al-protocol; }
.al-protocol li::before { content: counter(al-protocol, decimal-leading-zero); color: var(--al-gold); font-size: .85rem; font-variant-numeric: lining-nums tabular-nums; }
.al-protocol strong { color: var(--al-ink); font-family: var(--serif-head); font-size: 1.2rem; font-weight: 400; }
.al-protocol span { color: var(--al-soft); font-size: 1.05rem; line-height: 1.45; }
.al-paper { padding: clamp(1.1rem, 2.5vw, 1.75rem); background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-shadow), var(--al-edge); }
#page-asymmetric .al-paper label[for] { display: block; margin-bottom: .45rem; color: var(--al-ink); font-size: 1.08rem; line-height: 1.4; }
#page-asymmetric textarea { display: block; width: 100%; min-width: 0; margin: 0 0 1.25rem; padding: .85rem 1rem; background: #100d08; border: 1px solid var(--al-line-strong); border-radius: var(--al-radius); color: var(--al-ink); font: 1.05rem/1.7 var(--serif-body); resize: vertical; transition: border-color var(--al-quick) var(--al-ease); }
#page-asymmetric textarea:hover, #page-asymmetric textarea:focus-visible { border-color: var(--al-gold); }
#page-asymmetric textarea::placeholder { color: var(--al-soft); opacity: .7; }
.al-paper-foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: .75rem 1rem; }
#page-asymmetric #al-note-status { color: var(--al-soft); font-size: .95rem; }
.al-rubric { min-width: 0; margin: 1.5rem 0 0; padding: 1rem 0 0; border: 0; border-top: 1px solid var(--al-line); }
.al-rubric legend { float: left; width: 100%; margin-bottom: .5rem; padding: 0; color: var(--al-gold); font-size: var(--t-label, .8rem); letter-spacing: .14em; text-transform: uppercase; }
.al-check { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; gap: .75rem; padding: .55rem 0; color: var(--al-text); font-size: 1.05rem; line-height: 1.5; cursor: pointer; clear: both; }
.al-check input { appearance: none; display: grid; place-items: center; width: 1.1rem; height: 1.1rem; margin: .22rem 0 0; background: transparent; border: 1.5px solid var(--al-line-strong); border-radius: var(--al-radius); cursor: pointer; transition: background-color var(--al-quick) var(--al-ease), border-color var(--al-quick) var(--al-ease); }
.al-check input::after { content: ""; width: .55rem; height: .3rem; border: solid #100d08; border-width: 0 0 2px 2px; opacity: 0; transform: translateY(-1px) rotate(-45deg); }
.al-check input:checked { background: var(--al-gold); border-color: var(--al-gold); }
.al-check input:checked::after { opacity: 1; }
.al-check:has(input:checked) span { color: var(--al-ink); }
.al-model { margin-top: 1.25rem; border-top: 1px solid var(--al-line); border-bottom: 1px solid var(--al-line); }
#page-asymmetric .al-model summary { display: flex; justify-content: space-between; align-items: center; min-height: 52px; padding: .6rem 0; color: var(--al-ink); font-size: 1.1rem; list-style: none; cursor: pointer; }
.al-model summary::-webkit-details-marker { display: none; }
.al-model summary::after { content: "+"; color: var(--al-gold); font-size: 1.4rem; line-height: 1; transition: transform var(--al-quick) var(--al-ease); }
.al-model[open] summary::after { transform: rotate(45deg); }
.al-model ol { margin: .25rem 0 1rem; padding-left: 1.4rem; }
#page-asymmetric :is(.al-model li, .al-model p) { margin-bottom: .6rem; font-size: 1.05rem; line-height: 1.6; }
.al-model strong { color: var(--al-ink); font-family: var(--serif-head); font-weight: 400; }
.al-stats-compact { margin: 0 0 1.5rem; }
#page-asymmetric .al-exam-best { margin-bottom: 1.25rem; color: var(--al-soft); font-size: 1.05rem; }
#al-exam { margin-top: 1.5rem; }
#page-asymmetric #al-exam-result:not(:empty) { margin: 1.5rem 0 1rem; padding: 1.25rem 1.4rem; background: var(--al-s1); border: 1px solid var(--al-line); border-left: 3px solid var(--al-bad); border-radius: var(--al-radius); }
#page-asymmetric #al-exam-result[data-passed="true"] { border-left-color: var(--al-gold); }
#page-asymmetric .al-score-summary { color: var(--al-ink); font-family: var(--serif-head); font-size: 1.35rem; line-height: 1.35; }
.al-score { display: grid; grid-template-columns: repeat(14, minmax(0, 1fr)); gap: 3px; max-width: 28rem; margin: 1rem 0 .25rem; }
.al-score span { position: relative; height: 10px; background: var(--al-tint); }
.al-score [data-filled] { background: var(--al-gold); }
.al-score [data-pass]::after { content: ""; position: absolute; top: -5px; right: -2.5px; bottom: -5px; width: 2px; background: var(--al-ink); }
.al-review { margin: 1rem 0 0; padding: 0; list-style: none; }
#page-asymmetric .al-review a { display: inline-flex; align-items: center; min-height: 40px; font-size: 1.02rem; }
.al-glossary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin: 0; }
.al-term { padding: 1.1rem 1.2rem 1.2rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); box-shadow: var(--al-edge); }
.al-term dt { margin-bottom: .45rem; color: var(--al-gold); font-family: var(--serif-head); font-size: 1.2rem; line-height: 1.2; }
.al-term dd { margin: 0; color: var(--al-text); font-size: 1.05rem; line-height: 1.55; }
.al-sources .al-section-head { margin-bottom: 1.75rem; }
.al-next { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin: 0; padding: 0; list-style: none; }
#page-asymmetric .al-next a { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: .2rem .9rem; height: 100%; padding: 1.15rem 1.25rem; background: var(--al-s1); border: 1px solid var(--al-line); border-radius: var(--al-radius); text-decoration: none; transition: border-color var(--al-quick) var(--al-ease), background-color var(--al-quick) var(--al-ease); }
#page-asymmetric .al-next a:hover { background: var(--al-s2); border-color: var(--al-gold); }
#page-asymmetric .al-next .al-icon { grid-row: span 2; width: 1.6rem; height: 1.6rem; color: var(--al-gold); }
.al-next-kicker { color: var(--al-soft); font-size: var(--t-label, .8rem); letter-spacing: .12em; text-transform: uppercase; }
.al-next-title { color: var(--al-ink); font-family: var(--serif-head); font-size: 1.25rem; line-height: 1.2; }
#al-reset-dialog { width: min(92vw, 34rem); max-height: 85vh; margin: auto; padding: 1.75rem; overflow: auto; background: var(--al-s2); border: 1px solid var(--al-line-strong); border-radius: var(--al-radius); color: var(--al-text); box-shadow: 0 30px 80px -20px rgb(0 0 0 / .9); }
#al-reset-dialog h2 { margin-bottom: .75rem; font-size: 1.6rem; }
#al-reset-dialog p { margin: 0; color: var(--al-soft); font-size: 1.08rem; line-height: 1.6; }
#al-reset-dialog::backdrop { background: rgb(8 6 3 / .78); }

/* Breakpoints follow the system: 1200, 1024, 768, 480 */
@media (max-width: 1199px) {
 .al-units, .al-glossary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 1023px) {
 .al-hero { grid-template-columns: 1fr; }
 .al-frontispiece { max-width: 36rem; }
 .al-workspace { grid-template-columns: 1fr; gap: 2rem; }
 .al-sidebar { position: static; max-height: none; overflow: visible; padding-right: 0; }
 .al-ready .al-nav { display: none; }
 #page-asymmetric .al-maplink { display: inline; }
 .al-tools { display: flex; flex-wrap: wrap; gap: 0 1.25rem; }
 .al-split { grid-template-columns: 1fr; }
 .al-next { grid-template-columns: 1fr; }
}
@media (min-width: 768px) {
 .al-callouts { grid-template-columns: 1fr 1fr; }
 .al-example { grid-column: 1 / -1; }
 .al-diagram-steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
}
@media (max-width: 767px) {
 .al-units, .al-glossary { grid-template-columns: 1fr; }
 .al-orientation-panel { grid-template-columns: 1fr; }
 .al-orientation-panel p + p { border-top: 1px solid var(--al-line); border-left: 0; }
 .al-lesson-nav { grid-template-columns: 1fr; }
 #page-asymmetric .al-pager-next { justify-items: start; text-align: left; }
 .al-diagram { padding-inline: 1rem; }
 .al-diagram-scroll { margin-inline: -1rem; padding-inline: 1rem; overflow-x: auto; overscroll-behavior-x: contain; scrollbar-color: var(--al-line-strong) transparent; scrollbar-width: thin; }
 .al-figure-art { min-width: 34rem; }
 #page-asymmetric .al-hero-art .al-small { display: none; }
 #page-asymmetric .al-hero-art .al-strong { font-size: 26px; }
 #page-asymmetric .al-unit h3 { min-height: 0; }
 .al-protocol li { grid-template-columns: 2rem minmax(0, 1fr); }
 .al-protocol span { grid-column: 2; }
}
@media (max-width: 620px) {
 #page-asymmetric .al-scroll-hint { display: block; color: var(--al-soft); font-size: .9rem; font-style: italic; }
}
@media (max-width: 480px) {
 .al-stats > div { flex: 1 1 45%; padding: .1rem 0; border-left: 0; }
 .al-question { padding: 1rem .9rem; }
 .al-option { gap: .6rem; padding-inline: .7rem; }
 .al-diagram-controls .button { flex: 1 1 auto; }
 #page-asymmetric .al-diagram-controls [data-diagram-all] { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
 .al-hero-copy > *, .al-frontispiece, .al-ready .al-lesson { animation: none; }
 .al-ready [data-layer], .al-diagram-steps li { transition: none; }
 #page-asymmetric .button:active:not(:disabled) { transform: none; }
}
@media print {
 .topnav, footer, .al-sidebar, .al-map, .al-frontispiece, .al-interactive, .al-lesson-nav, .al-skip, #al-reset-dialog { display: none !important; }
 .al-hero, .al-workspace, .al-split { display: block; }
 #page-asymmetric .al-lesson[hidden], .al-ready .al-nojs { display: block !important; }
 #page-asymmetric { --al-ink: #111; --al-text: #111; --al-soft: #333; --al-gold: #444; --al-bright: #000; --al-s1: #fff; --al-s2: #fff; --al-tint: #ddd; --al-line: #bbb; --al-line-strong: #888; }
 #page-asymmetric [data-layer], #page-asymmetric [data-layer] text { opacity: 1 !important; }
 .al-diagram, .al-callout, .al-question { box-shadow: none; break-inside: avoid; }
 .al-lesson { break-before: page; animation: none !important; }
}