:root {
  --ink: #132744;
  --ink-2: #203a5c;
  --coral: #cf3e2e;
  --coral-dark: #b83225;
  --coral-light: #ff8a78;
  --mint: #39d69f;
  --mint-dark: #087c5d;
  --cream: #fff9ef;
  --paper: #fffdf8;
  --sand: #f3eadc;
  --line: #d8d0c3;
  --text: #192331;
  --muted: #5f6872;
  --white: #fff;
  --focus: #0072e5;
  --radius: 0;
  --radius-sm: 0;
  --shell: 1180px;
  --header: 76px;
  --nav-bg: rgba(255, 253, 248, .96);
  --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header) + 18px); }
body { margin: 0; overflow-x: hidden; background: var(--paper); color: var(--text); font-family: var(--font); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: var(--ink); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--coral-dark); }
button, input, textarea, select { font: inherit; }
button, select { cursor: pointer; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-weight: 820; line-height: 1.08; letter-spacing: -.035em; }
h1 { font-size: clamp(2.35rem, 6vw, 4.9rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.25rem; }
p { margin: 0; color: var(--muted); }
p + p { margin-top: 1rem; }
ul, ol { padding-left: 1.25rem; }
.shell { width: min(calc(100% - 40px), var(--shell)); margin-inline: auto; }
.narrow, .narrow-wide { max-width: none; }
.section { padding-block: clamp(2rem, 4vw, 3.5rem); }
.skip-link { position: fixed; top: 10px; left: -9999px; z-index: 1000; padding: .7rem 1rem; background: var(--ink); color: #fff; }
.skip-link:focus { left: 10px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }

.site-header { position: sticky; top: 0; z-index: 100; height: var(--header); background: var(--nav-bg); border: 0; backdrop-filter: blur(14px); }
.nav-row { display: flex; align-items: center; height: 100%; gap: 2rem; }
.brand { display: inline-flex; align-items: center; gap: .55rem; flex: 0 0 auto; color: var(--ink); font-size: 1.28rem; font-weight: 880; letter-spacing: -.055em; text-decoration: none; }
.brand img { width: 42px; height: 42px; object-fit: contain; }
.brand > span > span { color: var(--coral); }
.desktop-nav { display: flex; align-items: stretch; align-self: stretch; gap: .12rem; }
.desktop-nav > a, .nav-popover > button { position: relative; display: flex; align-items: center; gap: .4rem; padding: 0 .68rem; border: 0; background: transparent; color: var(--ink-2); font-size: .9rem; font-weight: 720; text-decoration: none; }
.desktop-nav > a::after, .nav-popover > button::after { position: absolute; right: .68rem; bottom: 13px; left: .68rem; height: 2px; border-radius: 0; background: var(--coral); content: ""; transform: scaleX(0); transform-origin: left; transition: transform .18s ease; }
.desktop-nav > a:hover, .nav-popover > button:hover, .nav-popover > button[aria-expanded="true"] { color: var(--coral-dark); }
.desktop-nav > a:hover::after, .nav-popover > button:hover::after, .nav-popover > button[aria-expanded="true"]::after { transform: scaleX(1); }
.nav-popover { position: relative; display: flex; }
.nav-fold-wrap { display: inline-grid; width: 19px; height: 19px; place-items: center; color: var(--ink-2); transition: color .18s ease, transform .18s ease; }
.nav-fold { width: 15px; height: 10px; overflow: visible; }
.nav-fold path, .nav-fold circle { fill: var(--paper); stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.55; }
.nav-popover > button:hover .nav-fold-wrap, .nav-popover > button[aria-expanded="true"] .nav-fold-wrap { color: var(--coral); }
.nav-popover:hover .nav-fold-wrap, .nav-popover.force-open .nav-fold-wrap { transform: rotate(180deg); }
.nav-menu { position: absolute; top: calc(100% - 3px); left: 0; display: grid; width: 356px; padding: .72rem; border: 1px solid var(--sand); border-radius: 0; background: var(--paper); box-shadow: none; visibility: hidden; pointer-events: none; transform: translateY(-7px); transition: transform .16s ease, visibility .16s ease; }
.nav-popover:hover .nav-menu, .nav-popover:focus-within .nav-menu, .nav-popover.force-open .nav-menu { visibility: visible; pointer-events: auto; transform: translateY(0); }
.nav-menu a { position: relative; display: grid; grid-template-columns: 20px 1fr; align-items: start; gap: .72rem; padding: .7rem .72rem; border-radius: 0; color: var(--ink); text-decoration: none; }
.nav-menu a::before { position: absolute; inset: .28rem auto .28rem 0; width: 3px; border-radius: 0; background: var(--coral); content: ""; transform: scaleY(0); transition: transform .16s ease; }
.nav-menu a:hover, .nav-menu a:focus-visible { background: var(--cream); color: var(--coral-dark); }
.nav-menu a:hover::before, .nav-menu a:focus-visible::before { transform: scaleY(1); }
.nav-symbol { width: 1em; height: 1em; margin-top: .08rem; fill: none; stroke: currentColor; stroke-linecap: round; stroke-linejoin: round; stroke-width: 1.55; vector-effect: non-scaling-stroke; }
.nav-menu .nav-symbol { width: .9rem; height: .9rem; }
.nav-menu a > span { display: grid; gap: .08rem; min-width: 0; }
.nav-menu strong { font-size: .88rem; line-height: 1.3; }
.nav-menu small { color: var(--muted); font-size: .73rem; line-height: 1.35; }
.nav-cta { margin-left: auto; padding: .64rem .9rem; border: 1px solid var(--ink); border-radius: 0; color: var(--ink); font-size: .82rem; font-weight: 780; text-decoration: none; }
.nav-cta:hover { background: var(--ink); color: #fff; }
.menu-button { display: none; align-items: center; gap: .55rem; min-width: 84px; height: 43px; padding: 0 .72rem; border: 1px solid var(--ink); border-radius: 0; background: var(--paper); color: var(--ink); }
.menu-button:hover, .menu-button.open { background: var(--ink); color: #fff; }
.menu-button-label { font-size: .74rem; font-weight: 820; letter-spacing: .04em; text-transform: uppercase; }
.menu-lines { position: relative; width: 21px; height: 17px; }
.menu-lines i { position: absolute; right: 0; width: 21px; height: 2px; border-radius: 0; background: currentColor; transition: transform .18s, top .18s, width .18s; }
.menu-lines i:first-child { top: 4px; }
.menu-lines i:last-child { top: 11px; width: 15px; }
.menu-button.open .menu-lines i { top: 8px; width: 19px; }
.menu-button.open .menu-lines i:first-child { transform: rotate(45deg); }
.menu-button.open .menu-lines i:last-child { transform: rotate(-45deg); }

.mobile-menu { position: fixed; inset: var(--header) 0 0; z-index: 90; display: none; overflow-y: auto; background: var(--paper); color: var(--ink); }
.mobile-menu.open { display: block; }
.mobile-menu-inner { padding-block: 1.35rem 4rem; }
.mobile-menu-intro { display: flex; align-items: center; gap: .85rem; padding: .35rem .2rem 1.1rem; }
.mobile-menu-intro img { width: 48px; height: 48px; object-fit: contain; }
.mobile-menu-intro strong { display: block; font-size: 1.1rem; }
.mobile-menu-intro p { margin-top: .12rem; color: var(--muted); font-size: .8rem; }
.mobile-featured { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; padding: .55rem; border-radius: 0; background: var(--cream); }
.mobile-featured a { display: flex; align-items: center; gap: .6rem; min-height: 48px; padding: .62rem .72rem; border-radius: 0; color: var(--ink); font-size: .84rem; font-weight: 780; text-decoration: none; }
.mobile-featured a:hover { background: var(--paper); color: var(--coral-dark); }
.mobile-featured .nav-symbol { flex: 0 0 auto; color: var(--coral-dark); }
.mobile-groups { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin-top: 1rem; }
.mobile-groups details { overflow: hidden; border-radius: 0; background: transparent; }
.mobile-groups details[open] { background: var(--cream); }
.mobile-groups summary { display: flex; justify-content: space-between; align-items: center; min-height: 48px; padding: .75rem .85rem; color: var(--ink); font-weight: 790; cursor: pointer; list-style: none; }
.mobile-groups summary::-webkit-details-marker { display: none; }
.mobile-groups summary > span:first-child { display: flex; align-items: center; gap: .55rem; }
.mobile-groups summary .nav-symbol { color: var(--coral-dark); }
.mobile-groups details[open] summary .nav-fold-wrap { color: var(--coral); transform: rotate(180deg); }
.mobile-link-list { padding: 0 .4rem .45rem; }
.mobile-groups details a { display: flex; align-items: center; gap: .58rem; min-height: 42px; padding: .58rem .62rem; border-radius: 0; color: var(--ink-2); font-size: .82rem; font-weight: 660; text-decoration: none; }
.mobile-groups details a:hover { background: var(--paper); color: var(--coral-dark); }
.mobile-groups details a .nav-symbol { flex: 0 0 auto; color: var(--muted); }
.mobile-groups details a .nav-symbol { width: .82rem; height: .82rem; }
.mobile-groups details a:hover .nav-symbol { color: var(--coral-dark); }

.breadcrumb-bar { background: var(--nav-bg); border: 0; box-shadow: none; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: .42rem; margin: 0; padding: .68rem 0; color: var(--muted); font-size: .82rem; line-height: 1.35; }
.breadcrumb a { color: var(--ink-2); font-weight: 700; text-decoration: none; }
.breadcrumb a:hover { color: var(--coral-dark); text-decoration: underline; }
.breadcrumb [aria-current="page"] { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.breadcrumb-separator { color: #8a929b; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: .55rem; min-height: 48px; padding: .72rem 1.1rem; border: 1px solid var(--ink); border-radius: 0; font-weight: 780; text-decoration: none; }
button.button { color: var(--ink); }
.button.primary { border-color: var(--coral); background: var(--coral); color: #fff; }
.button.primary:hover { border-color: var(--coral-dark); background: var(--coral-dark); color: #fff; }
.button.quiet { background: transparent; color: var(--ink); }
.button.quiet:hover { background: var(--ink); color: #fff; }
.text-link { font-weight: 760; }

.home-hero { overflow: hidden; background: var(--cream); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, 320px); min-height: auto; align-items: center; gap: clamp(2rem, 5vw, 4.5rem); padding-block: clamp(2.5rem, 5vw, 4rem); }
.hero-copy { min-width: 0; }
.hero-copy h1 { width: 100%; }
.hero-copy > p { width: 100%; margin-top: 1.4rem; font-size: clamp(1.08rem, 2vw, 1.32rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.hero-facts { display: flex; flex-wrap: wrap; gap: .55rem 1.4rem; margin: 1.5rem 0 0; padding: 0; color: var(--muted); list-style: none; font-size: .84rem; font-weight: 650; }
.hero-facts li::before { content: "✓"; margin-right: .38rem; color: var(--mint-dark); font-weight: 900; }
.hero-art { width: 100%; margin: 0; justify-self: end; }
.hero-art img { width: 100%; max-height: 220px; object-fit: contain; object-position: right center; }

.daily-stage { padding-block: clamp(2.5rem, 5vw, 4rem); background: var(--ink); color: #fff; }
.daily-grid { display: grid; grid-template-columns: .65fr 1.35fr; gap: clamp(2rem, 6vw, 5rem); align-items: start; }
.daily-copy h2, .daily-card h3 { color: #fff; }
.daily-copy p { margin-top: .8rem; color: #c7d2df; }
.challenge-meta { display: flex; gap: 2rem; margin: 2rem 0 0; }
.challenge-meta div { display: grid; }
.challenge-meta dt { color: var(--muted); font-size: .88rem; font-weight: 680; }
.challenge-meta dd { margin: .15rem 0 0; color: var(--ink); font-weight: 760; }
.daily-stage .challenge-meta dt { color: #b6c2cf; }
.daily-stage .challenge-meta dd { color: #fff; }
.daily-card { padding: clamp(1.5rem, 4vw, 2.7rem); border-radius: 0; background: var(--paper); color: var(--text); }
.daily-card h3 { color: var(--ink); font-size: clamp(1.5rem, 3vw, 2.25rem); }
.daily-card > p { margin-top: 1rem; color: #37495f; font-size: 1.08rem; }
.card-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1rem; margin-top: 1.6rem; }
.card-actions > span { color: var(--muted); font-size: .8rem; }
.home-tool-launcher { padding-block: 3rem; background: #eef4f8; }
.home-tool-launcher-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); align-items: stretch; gap: 1.5rem; }
.home-tool-launcher-copy > p { margin-top: .7rem; }
.home-task-choices { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; margin-top: 1.4rem; }
.home-task-choices button { min-height: 52px; padding: .8rem 1rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); color: var(--ink); font-weight: 760; text-align: left; box-shadow: none; }
.home-task-choices button[aria-pressed="true"] { border-color: var(--ink); background: var(--ink); color: #fff; }
.home-tool-recommendation { display: flex; flex-direction: column; justify-content: center; padding: clamp(1.5rem, 3vw, 2rem); background: var(--ink); color: #fff; }
.home-tool-recommendation h3 { color: #fff; font-size: clamp(1.45rem, 2.5vw, 2rem); }
.home-tool-recommendation p { margin-top: .75rem; color: #cbd6e1; }
.home-tool-recommendation strong { color: #fff; }
.home-tool-recommendation .button { align-self: flex-start; margin-top: 1.3rem; background: var(--coral); color: #fff; }

.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 2rem; }
.section-heading p { margin-top: .5rem; font-size: 1.05rem; }
.section-heading > a { font-weight: 760; white-space: nowrap; }
.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.tool-card { padding: 1.6rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.tool-card.coral, .tool-card.mint, .tool-card.navy { background: var(--paper); }
.tool-card h3, .tool-directory h3, .collection-grid h3 { display: flex; align-items: baseline; gap: .5rem; }
.tool-icon { display: inline-flex; align-items: center; justify-content: center; width: 1em; height: 1em; margin: 0; border-radius: 0; background: transparent; color: var(--ink); font-size: 1em; line-height: 1; flex: 0 0 1em; }
.tool-card h3 a, .tool-directory h3 a { color: inherit; text-decoration: none; }
.tool-card h3 a:hover, .tool-directory h3 a:hover { color: var(--coral-dark); text-decoration: underline; }
.tool-card p { min-height: 78px; margin-top: .75rem; }
.tool-card .text-link { display: inline-block; margin-top: 1.3rem; }
.workbench { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(0, 1.2fr); gap: 1.5rem; padding-top: 3rem; padding-bottom: 3rem; align-items: start; }
.workbench-form, .workbench-output { border: 1px solid var(--line); background: var(--paper); padding: 1.5rem; }
.workbench-form { display: grid; gap: 1rem; }
.workbench-form label, .workbench-form fieldset { display: grid; gap: .45rem; font-weight: 700; }
.workbench-form fieldset { border: 1px solid var(--line); padding: 1rem; }
.workbench-form input, .workbench-form select, .workbench-form textarea { width: 100%; border: 1px solid var(--line); border-radius: 0; background: var(--cream); color: var(--ink); padding: .8rem; font: inherit; }
.workbench-form textarea { min-height: 92px; resize: vertical; }
.workbench-output { min-height: 260px; overflow-x: auto; }
.workbench-output table { width: 100%; border-collapse: collapse; margin-top: 1rem; }
.workbench-output th, .workbench-output td { border: 1px solid var(--line); padding: .7rem; text-align: left; }
.workbench-output ul { padding-left: 1.25rem; }

.magazine-section { background: var(--cream); }
.magazine-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 2.5rem; }
.magazine-lead { overflow: hidden; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.magazine-lead img { width: 100%; aspect-ratio: 3 / 2; object-fit: contain; background: var(--cream); }
.magazine-lead > div { padding: 2rem; }
.magazine-lead h2 { color: var(--ink); }
.magazine-lead p { margin-top: .8rem; color: var(--muted); }
.magazine-lead .button { margin-top: 1.4rem; border-color: var(--ink); color: var(--ink); }
.magazine-lead .button:hover { background: var(--ink); color: #fff; }
.story-list { display: grid; }
.story-list article { padding: 1.25rem 0; }
.story-list article + article { border-top: 1px solid var(--line); }
.story-list h3 a, .guide-grid h2 a, .guide-grid h3 a, .blog-grid h2 a { color: inherit; text-decoration: none; }
.story-list h3 a:hover, .guide-grid h2 a:hover, .guide-grid h3 a:hover, .blog-grid h2 a:hover { color: var(--coral-dark); text-decoration: underline; }
.story-list p { margin-top: .4rem; font-size: .88rem; }
.topic-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.topic-grid article { padding: 1.6rem; border-radius: 0; background: var(--cream); }
.topic-grid p { margin-top: .65rem; }
.topic-grid article > a { display: inline-block; margin-top: 1rem; font-weight: 760; }
.topic-grid h3 a { color: inherit; text-decoration: none; }
.closing-cta { padding-block: 2.5rem; background: var(--mint); }
.closing-cta .shell { display: flex; justify-content: space-between; align-items: center; gap: 2rem; }
.closing-cta h2 { width: 100%; }
.closing-cta p { width: 100%; margin-top: .5rem; color: #164d3c; }

.page-hero { padding-block: clamp(2.5rem, 5vw, 4rem); background: var(--cream); }
.page-hero.compact { padding-block: clamp(2.25rem, 4vw, 3.25rem); text-align: left; }
.page-hero.compact .shell { width: min(calc(100% - 40px), var(--shell)); max-width: none; }
.page-hero.compact p { margin-inline: 0; }
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 300px); align-items: center; gap: clamp(2rem, 5vw, 4.5rem); }
.page-hero-grid > div { min-width: 0; }
.page-hero h1 { width: 100%; max-width: none; font-size: clamp(2.4rem, 5vw, 4.2rem); }
.page-hero p { width: 100%; margin-top: 1rem; font-size: 1.16rem; }
.page-hero-grid img { width: 100%; max-height: 220px; justify-self: end; object-fit: contain; object-position: right center; }
.page-summary, .semantic-summary:not(.direct-answer) { margin-block: 2rem; padding: 1.5rem; border-radius: 0; background: var(--cream); }
.page-summary > p, .semantic-summary > p, .semantic-facts > p { margin-top: .7rem; }
.page-summary h3, .semantic-facts h3 { margin-top: 1.4rem; color: var(--ink); font-size: 1.08rem; }
.page-summary ul, .semantic-facts ul, .semantic-facts ol { display: grid; gap: .55rem; margin: .8rem 0 0; padding-left: 1.25rem; color: #37414d; }
.semantic-facts strong, .semantic-facts b, .page-summary strong { color: var(--ink); }
.semantic-facts b { font-weight: 760; }

.challenge-page { padding-block: 2rem 3rem; }
.challenge-toolbar { display: flex; justify-content: flex-start; align-items: center; margin-top: 1rem; }
.timer { display: flex; align-items: center; gap: .7rem; font-variant-numeric: tabular-nums; }
.timer span { font-weight: 820; }
.timer button { border: 0; background: transparent; color: var(--coral-dark); font-size: .8rem; font-weight: 760; }
.challenge-box, .reveal-panel { padding: clamp(1.5rem, 4vw, 2.8rem); border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.challenge-box > p { margin-top: 1rem; color: #33445a; font-size: 1.12rem; }
.challenge-box label { display: block; margin-top: 2rem; color: var(--ink); font-weight: 760; }
.challenge-box textarea { width: 100%; margin-top: .5rem; padding: .9rem; border: 1px solid var(--line); border-radius: 0; background: var(--cream); resize: vertical; }
.challenge-buttons { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.2rem; }
.reveal-panel { margin-top: 1rem; background: #eaf9f4; }
.reveal-panel p { margin-top: .7rem; }
.answer-panel { background: #fff1ed; }
.answer-panel h3 { margin-top: 1.5rem; }
.answer-panel li + li { margin-top: .45rem; }
.challenge-study { padding-block: 1.75rem .5rem; }
.challenge-study h2 { font-size: clamp(1.45rem, 3vw, 2rem); }
.challenge-study h2:not(:first-child) { margin-top: 2.25rem; }
.challenge-study p { margin-top: .75rem; }
.daily-practice-note { margin-top: 2rem; padding: 1.5rem; border-radius: 0; background: var(--cream); }
.daily-practice-note h2 { font-size: 1.35rem; }
.daily-practice-note h2:not(:first-child) { margin-top: 2rem; }
.daily-practice-note p { margin-top: .7rem; }
.daily-method .section-heading { margin-bottom: 1.35rem; }
.practice-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.practice-grid article { padding: 1.35rem; border-radius: 0; background: var(--cream); }
.practice-grid h3 { font-size: 1.15rem; }
.practice-grid p, .practice-note { margin-top: .65rem; }
.problem-types { background: #eaf9f4; }
.problem-type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.problem-type-grid article { padding: 1.5rem; border: 1px solid #c7e9dd; border-radius: 0; background: var(--paper); }
.problem-type-grid p, .shared-discipline { margin-top: .75rem; }
.confidence { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-top: 1.5rem; }
.confidence span { margin-right: .5rem; font-weight: 760; }
.confidence button { padding: .4rem .7rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.confidence button.selected { border-color: var(--ink); background: var(--ink); color: #fff; }
.next-actions { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; font-weight: 760; }

.guide-group + .guide-group { margin-top: 3rem; }
.guide-group-head { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 1.4rem; }
.guide-group-head p { width: 100%; margin-top: .5rem; }
.guide-group-head > a { flex: 0 0 auto; font-weight: 760; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.guide-grid article { padding: 1.35rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.guide-grid h2, .guide-grid h3 { font-size: 1.22rem; }
.guide-grid p { margin-top: .65rem; font-size: .9rem; }
.guide-grid ul { color: var(--muted); font-size: .86rem; }
.guide-grid article > a:last-child { display: inline-block; margin-top: 1rem; font-weight: 760; }
.topic-practice { padding-block: 2.5rem; background: var(--ink); text-align: center; }
.topic-practice h2 { color: #fff; }
.topic-practice p { margin: .7rem auto 1.4rem; color: #c7d2df; }
.topic-practice .button + .button { margin-left: .6rem; }
.topic-overview { padding-block: 2.5rem 1rem; }
.topic-overview h2:not(:first-child) { margin-top: 3rem; }
.topic-overview p, .topic-overview ol, .topic-caution p { margin-top: .8rem; }
.topic-overview li + li { margin-top: .65rem; }
.topic-caution { padding-block: 1rem 2.5rem; }
.topic-composition { padding-block: 2rem 3rem; }
.topic-composition .shell { display: grid; gap: 1.25rem; }
.topic-module { padding: clamp(1.3rem, 3vw, 2rem); border-radius: 0; }
.topic-module p, .topic-module ol, .topic-module ul { margin-top: .8rem; }
.topic-summary { margin: 0; background: var(--cream); }
.topic-narrative { background: var(--paper); }
.topic-workflow { background: #eef4f8; }
.topic-workflow ol { display: grid; gap: .75rem; }
.topic-guides { padding-inline: 0; }
.topic-failure { background: #fff0ec; }
.topic-practice-panel { background: var(--ink); text-align: center; }
.topic-practice-panel h2 { color: #fff; }
.topic-practice-panel p { width: 100%; margin-inline: auto; color: #ced8e3; }
.topic-practice-panel .button { margin-top: 1.2rem; }
.topic-form-reframing-path .topic-narrative { margin-left: 8%; background: #e9f8f2; }
.topic-form-reframing-path .topic-workflow { margin-right: 8%; }
.topic-form-problem-operating-system .topic-workflow ol { grid-template-columns: repeat(2, 1fr); }
.topic-form-problem-operating-system .topic-workflow li { padding: 1rem; border-radius: 0; background: var(--paper); }
.topic-form-puzzle-studio .topic-workflow { background: #fff0ec; }
.topic-form-puzzle-studio .topic-narrative { background: var(--cream); }
.button.quiet.inverse { border-color: #fff; color: #fff; }
.button.quiet.inverse:hover { background: #fff; color: var(--ink); }

.article-layout { padding-block: clamp(2.5rem, 5vw, 4rem); }
.article-header { width: 100%; }
.article-header h1 { font-size: clamp(2.45rem, 5.4vw, 4.6rem); }
.article-header > p { width: 100%; margin-top: 1rem; font-size: 1.18rem; }
.article-byline { font-size: .8rem !important; }
.blog-article .article-header h1 { font-size: clamp(2.4rem, 4.5vw, 3.8rem); }
.article-columns { display: grid; grid-template-columns: 230px minmax(0, 720px); gap: 4rem; margin-top: 2rem; align-items: start; }
.article-aside { position: sticky; top: calc(var(--header) + 24px); }
.article-aside strong { color: var(--ink); }
.article-aside ol { display: grid; gap: .55rem; padding-left: 1.2rem; color: var(--muted); font-size: .82rem; }
.article-aside a { color: var(--muted); }
.article-body { width: 100%; }
.composed-guide { width: 100%; }
.composed-guide .article-header { width: 100%; }
.composed-guide-body { display: grid; gap: 1.25rem; width: 100%; margin-top: 2rem; }
.guide-module { scroll-margin-top: calc(var(--header) + 24px); }
.guide-quick, .guide-takeaways, .guide-quality, .guide-practice, .worked-exercise, .contextual-reading, .guide-map { padding: clamp(1.3rem, 3vw, 2rem); border-radius: 0; }
.guide-quick { margin: 0; background: var(--cream); }
.guide-quick > p, .guide-quality > p, .guide-practice > p, .worked-exercise > p, .contextual-reading > p { margin-top: .75rem; }
.guide-map { background: #eef4f8; }
.guide-module-title { margin: 0; color: var(--ink); font-size: 1.05rem; }
.guide-map ul { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.guide-map a { display: block; padding: .5rem .7rem; border-radius: 0; background: var(--paper); font-size: .82rem; font-weight: 720; text-decoration: none; }
.guide-takeaways { background: #e9f8f2; }
.guide-takeaways ul { display: grid; grid-template-columns: 1fr 1fr; gap: .7rem 1.5rem; margin: 1rem 0 0; color: #29473e; }
.guide-quality { background: #fff0ec; }
.guide-practice { background: var(--ink); }
.guide-practice .guide-module-title { color: #fff; }
.guide-practice p { color: #ced8e3; }
.guide-practice a { color: #fff; }
.worked-exercise { background: var(--sand); }
.contextual-reading { background: var(--cream); }
.editorial-sections { display: block; }
.editorial-sections section { width: 100% !important; margin: 0 !important; padding: clamp(1.6rem, 3vw, 2.4rem) 0 0; border-radius: 0; background: transparent !important; }
.editorial-sections p { margin-top: .75rem; }
.guide-fieldwork { padding: clamp(1.4rem, 3vw, 2.2rem); background: #eef4f8; }
.guide-fieldwork > p { margin-top: .75rem; }
.guide-fieldwork h3 { margin-top: 1.5rem; }
.guide-table-wrap { width: 100%; margin-top: 1.35rem; overflow-x: auto; }
.guide-fieldwork table { width: 100%; border-collapse: collapse; background: var(--paper); font-size: .92rem; }
.guide-fieldwork caption { padding: 0 0 .65rem; color: var(--ink); font-size: 1rem; font-weight: 800; text-align: left; }
.guide-fieldwork th, .guide-fieldwork td { min-width: 135px; padding: .8rem .85rem; text-align: left; vertical-align: top; }
.guide-fieldwork th { background: var(--ink); color: #fff; font-size: .78rem; }
.guide-fieldwork tbody tr:nth-child(even) { background: var(--cream); }
.guide-fieldwork ul, .guide-fieldwork ol { display: grid; gap: .5rem; margin-top: .75rem; }
.fieldwork-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-top: 1.35rem; }
.fieldwork-comparison > h3 { grid-column: 1 / -1; margin-top: 0; }
.fieldwork-comparison > div { padding: 1rem; background: var(--paper); }
.fieldwork-comparison p { margin-top: .45rem; }
.guide-related > div { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: 1rem; }
.guide-related article { padding: 1rem; border-radius: 0; background: var(--cream); }
.guide-related p, .guide-related article > a { display: block; margin-top: .55rem; }

.method-steps, .board-notes, .model-cards, .diagnostic-cards, .alternating-notes, .evidence-file, .chain-blocks, .decision-panels, .studio-grid, .reference-blocks, .case-panels, .portfolio-grid, .experiment-log, .brief-sections, .flow-panels, .session-notes, .calibration-panels { display: block; }

.answer-panel[data-answer-form="observation-plan"], .answer-panel[data-answer-form="state-trace"], .answer-panel[data-answer-form="event-timeline"] { background: #eef4f8; }
.answer-panel[data-answer-form="diagnostic-case"], .answer-panel[data-answer-form="hypothesis-file"], .answer-panel[data-answer-form="capacity-case"] { background: #e9f8f2; }
.answer-panel[data-answer-form="competing-rules"], .answer-panel[data-answer-form="fact-assumption-split"] { background: #fff0ec; }
.answer-panel[data-answer-form="optimization-ledger"] ol, .answer-panel[data-answer-form="state-trace"] ol, .answer-panel[data-answer-form="event-timeline"] ol { display: grid; gap: .6rem; padding: 0; list-style-position: inside; }
.answer-panel[data-answer-form="two-case-proof"] ol, .answer-panel[data-answer-form="search-tree"] ol { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; padding: 0; list-style-position: inside; }
.answer-panel[data-answer-form="two-case-proof"] li, .answer-panel[data-answer-form="search-tree"] li { padding: .8rem; border-radius: 0; background: var(--paper); }
.article-body section { margin-top: 2rem; }
.article-body h2 { font-size: clamp(1.55rem, 3vw, 2.1rem); }
.article-body h3 { margin-top: 1.6rem; }
.article-body p { margin-top: .9rem; color: #37414d; font-size: 1.03rem; }
.article-body li { margin-top: .45rem; color: #37414d; }
.direct-answer { margin-top: 0 !important; padding: 1.5rem; border-radius: 0; background: #eaf9f4; }
.direct-answer p { color: #23483d; }
.article-method-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.25rem; }
.article-method-grid article { padding: 1.25rem; background: var(--cream); }
.article-method-grid h3, .article-traps h3 { margin-top: 0; }
.worked-example, .article-checklist, .article-practice { padding: 1.5rem; }
.worked-example { background: var(--sand); }
.article-traps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1.25rem; }
.article-traps article { padding: 1.2rem; background: #fff0ec; }
.article-checklist { background: #eef4f8; }
.article-checklist ul { margin-bottom: 0; }
.article-practice { background: var(--cream); }
.key-points, .worked-exercise { margin-top: 1.25rem; padding: 1.5rem; border-radius: 0; background: var(--cream); }
.key-points h2, .worked-exercise h2 { font-size: 1.35rem; }
.article-cover { width: min(100%, 1000px); max-height: 520px; margin-top: 2rem; border-radius: 0; object-fit: cover; }
.imported-article { margin: 2rem 0 0; }
.related-section { padding-block: 2.5rem; background: var(--cream); }
.related-section h2 { margin-bottom: 1.5rem; }

.tool-directory { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.tool-directory article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.tool-directory p { margin-top: .5rem; }
.tool-directory article > div > a { display: inline-block; margin-top: .8rem; font-weight: 760; }
.tool-card.coral .tool-icon, .tool-icon.coral { color: var(--coral-dark); }
.tool-card.mint .tool-icon, .tool-icon.mint { color: var(--mint-dark); }
.tool-card.navy .tool-icon, .tool-icon.navy { color: var(--ink); }
.method-strip { padding-block: 2.5rem; background: var(--ink); }
.method-strip-layout { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); align-items: center; gap: clamp(2rem, 5vw, 4rem); }
.method-strip h2 { color: #fff; font-size: clamp(1.8rem, 3vw, 2.5rem); }
.method-strip p { width: 100%; margin: 0; color: #c7d2df; font-size: 1.03rem; }
.tool-choice-guide { padding-block: 3rem; background: var(--paper); }
.tool-choice-layout { display: grid; grid-template-columns: minmax(250px, .72fr) minmax(0, 1.28fr); align-items: start; gap: clamp(2rem, 5vw, 4rem); }
.tool-choice-intro h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }
.tool-choice-intro p { margin-top: .75rem; font-size: 1.02rem; }
.tool-choice-paths { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.tool-choice-paths article { padding: 1.35rem; background: var(--cream); }
.tool-choice-paths article:last-child { grid-column: 1 / -1; }
.tool-choice-paths h3 { font-size: 1.18rem; }
.tool-choice-paths p { margin-top: .55rem; }
.method-intro { width: 100%; margin-bottom: 2rem; }
.method-intro p { margin-top: .7rem; font-size: 1.05rem; }
.method-library { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.method-library article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.method-library h3 { font-size: 1.35rem; }
.method-library h3 a { color: inherit; text-decoration: none; }
.method-library h3 a:hover { color: var(--coral-dark); text-decoration: underline; }
.method-library dl { display: grid; gap: .8rem; margin: 1rem 0; }
.method-library dl div, .selector-result dl div { display: grid; gap: .15rem; }
.method-library dt, .selector-result dt { color: var(--ink); font-weight: 780; }
.method-library dd, .selector-result dd { margin: 0; color: var(--muted); }
.method-library article > a { font-weight: 760; }
.method-workflow { padding-block: 2.5rem; background: var(--cream); }
.method-workflow ol { display: grid; gap: .8rem; color: var(--muted); }
.method-workflow strong { color: var(--ink); }
.challenge-library { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.challenge-library article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 0; }
.challenge-library h3 { font-size: 1.35rem; }
.challenge-library h3 a { color: inherit; text-decoration: none; }
.challenge-library h3 a:hover { color: var(--coral-dark); text-decoration: underline; }
.challenge-library p { margin-top: .7rem; }
.challenge-library article > a { display: inline-block; margin-top: 1rem; font-weight: 760; }
.archive-filters { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 1rem; margin-bottom: 1rem; padding: 1rem; border-radius: 0; background: var(--cream); }
.archive-filters label { display: grid; gap: .35rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
.archive-filters [data-filter-count] { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: .84rem; }
.filter-empty { margin-top: 1rem; padding: 1.25rem; border-radius: 0; background: var(--cream); text-align: center; }

.practice-log { margin-top: 2rem; padding: 1.5rem; border-radius: 0; background: var(--cream); }
.practice-log > p { margin-top: .6rem; }
.practice-log-form { margin-top: 1.2rem; }
.practice-log-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.practice-log-form label { display: grid; gap: .35rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
.practice-log-form > label { margin-top: 1rem; }
.practice-log-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .7rem; margin-top: 1rem; }
.practice-log-status { color: var(--muted); font-size: .84rem; }
.practice-log-list { display: grid; gap: .7rem; margin-top: 1rem; padding: 0; list-style: none; }
.practice-log-entry { padding: 1rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.practice-log-entry strong, .practice-log-entry span { display: block; }
.practice-log-entry span { margin-top: .25rem; color: var(--muted); font-size: .86rem; }

.tool-workspace, .matrix-shell, .framer, .riddle-shell, .test-shell { padding-block: 2rem 3rem; }
.tool-hero { padding-block: clamp(2.5rem, 5vw, 4rem); }
.tool-hero > .shell { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 360px); align-items: center; gap: clamp(2rem, 5vw, 4.5rem); }
.tool-hero > .shell > :first-child { min-width: 0; }
.tool-hero h1 { width: 100%; max-width: none; font-size: clamp(2.4rem, 5vw, 4.4rem); }
.tool-hero .answer-lead { width: 100%; margin-top: 1rem; font-size: 1.16rem; }
.generator-hero { background: var(--cream); }
.reasoning-hero { background: #eef4f8; }
.decision-hero { background: #e9f8f2; }
.framer-hero { background: var(--sand); }
.riddle-hero { background: #fff0ec; }
.selector-hero { background: var(--cream); }
.generator-hero dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 0; }
.generator-hero dl div { padding: .9rem; border-radius: 0; background: var(--paper); }
.generator-hero dt { color: var(--muted); font-size: .7rem; font-weight: 720; }
.generator-hero dd { margin: .2rem 0 0; color: var(--ink); font-size: .9rem; font-weight: 800; }
.generator-definition, .test-blueprint, .decision-definition, .framer-definition, .riddle-definition, .selector-definition, .iq-definition { margin-block: 1.5rem; padding: 1.4rem; border-radius: 0; background: var(--paper); }
.generator-definition p, .test-blueprint p, .decision-definition p, .framer-definition p, .riddle-definition p, .selector-definition p, .iq-definition p { margin-top: .7rem; }
.puzzle-studio { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 1rem; padding-block: 1rem 3rem; align-items: start; }
.generator-rail { position: sticky; top: calc(var(--header) + 20px); display: grid; gap: 1rem; padding: 1.25rem; border-radius: 0; background: var(--ink); }
.generator-rail h2, .generator-rail label { color: #fff; }
.generator-rail label { display: grid; gap: .35rem; font-size: .82rem; font-weight: 760; }
.generator-rail p { color: #c8d3df; font-size: .8rem; }
.generator-rail select { width: 100%; }
.puzzle-studio .generated-challenge { margin: 0; background: var(--cream); }
.challenge-context { margin-top: .65rem !important; color: var(--muted); font-size: .9rem !important; }
.challenge-context span { color: var(--ink); font-weight: 700; }
.reasoning-log { display: grid; gap: .4rem; margin-top: 1.4rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
.reasoning-log textarea { padding: .8rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); resize: vertical; }

.reasoning-domains { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.reasoning-domains span { padding: .8rem; border-radius: 0; background: var(--paper); color: var(--ink); font-weight: 760; text-align: center; }
.reasoning-lab { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 1rem; padding-block: 1rem 3rem; align-items: start; }
.reasoning-lab > aside { padding: 1.25rem; border-radius: 0; background: var(--ink); }
.reasoning-lab > aside h2 { color: #fff; }
.reasoning-lab > aside ul { display: grid; gap: .55rem; color: #d2dce7; }
.reasoning-lab > aside p { margin-top: 1rem; color: #aebdcd; font-size: .83rem; }
.reasoning-lab .test-shell { padding: 0; }
.reasoning-breakdown { display: grid; grid-template-columns: repeat(2, 1fr); gap: .6rem; margin: 1.25rem 0; }
.reasoning-breakdown div { padding: .75rem; border-radius: 0; background: var(--paper); }
.reasoning-breakdown span, .reasoning-breakdown strong { display: block; }
.reasoning-breakdown span { color: var(--muted); font-size: .75rem; }

.formula-card, .frame-model, .riddle-rule, .selector-principle { display: grid; gap: .35rem; padding: 1.5rem; border-radius: 0; background: var(--paper); }
.formula-card strong, .frame-model strong, .riddle-rule strong, .selector-principle strong { color: var(--ink); font-size: 1.2rem; }
.formula-card span, .frame-model span, .riddle-rule span, .selector-principle span { color: var(--muted); }
.matrix-shell { padding-top: 1rem; }
.weight-status { display: grid; min-width: 210px; padding: .8rem; border-radius: 0; background: var(--paper); }
.weight-status span, .weight-status small { color: var(--muted); font-size: .75rem; }
.weight-status strong { color: var(--ink); font-size: 1.5rem; }
.matrix-summary { margin-top: 1rem; padding: 1.3rem; border-radius: 0; background: #e9f8f2; }
.matrix-summary p { margin-top: .6rem; }

.framer-form fieldset { display: grid; gap: 1rem; margin: 0; padding: 1.2rem; border: 0; border-radius: 0; background: var(--cream); }
.framer-form legend { padding: 0 .35rem; color: var(--ink); font-size: 1.05rem; font-weight: 820; }
.framer-completeness { display: flex; justify-content: space-between; align-items: center; padding: .8rem 1rem; border-radius: 0; background: #eef4f8; color: var(--muted); font-size: .8rem; }
.framer-completeness strong { color: var(--ink); }
.frame-model { text-align: center; }

.riddle-theatre { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 1rem; padding-block: 1rem 3rem; align-items: start; }
.riddle-controls { display: grid; gap: 1rem; padding: 1.25rem; border-radius: 0; background: #fff0ec; }
.riddle-controls label { display: grid; gap: .35rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
.riddle-theatre .riddle-card { margin: 0; padding: clamp(1.5rem, 5vw, 3rem); background: var(--ink); }
.riddle-theatre .riddle-card h2 { color: #fff; }
.riddle-theatre .riddle-card > p { color: #e1e7ee; font-size: clamp(1.15rem, 2.4vw, 1.5rem); }
.riddle-context { color: #b9c7d6 !important; font-size: .9rem !important; }
.riddle-context span { color: #fff; font-weight: 700; }
.riddle-guess { margin-top: 1.5rem; padding: 1rem; border-radius: 0; background: var(--paper); }
.riddle-guess label { color: var(--ink); font-weight: 760; }
.riddle-guess > div { display: flex; gap: .55rem; margin-top: .5rem; }
.riddle-guess input { min-width: 0; flex: 1; padding: .7rem; border: 1px solid var(--line); border-radius: 0; }
.riddle-guess p { margin-top: .5rem; font-size: .82rem; }
.riddle-theatre .inline-reveal { background: var(--paper); }

.method-route-form.selector-form { display: grid; grid-template-columns: 1fr; align-items: stretch; gap: 1rem; padding: 0; background: transparent; }
.method-route-form fieldset { margin: 0; padding: 1.2rem; border: 0; border-radius: 0; background: var(--cream); }
.method-route-form legend { padding: 0 .35rem; color: var(--ink); font-weight: 820; }
.shape-choice-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .65rem; }
.shape-choice-grid label, .evidence-choice label { position: relative; cursor: pointer; }
.shape-choice-grid input, .evidence-choice input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.shape-choice-grid span, .evidence-choice span { display: grid; height: 100%; padding: .9rem; border: 2px solid transparent; border-radius: 0; background: var(--paper); color: var(--muted); }
.shape-choice-grid strong { display: block; color: var(--ink); }
.shape-choice-grid input:checked + span, .evidence-choice input:checked + span { border-color: var(--ink); background: #eef4f8; color: var(--ink); }
.shape-choice-grid input:focus-visible + span, .evidence-choice input:focus-visible + span { outline: 3px solid var(--focus); outline-offset: 3px; }
.evidence-choice { display: grid; grid-template-columns: repeat(3, 1fr); gap: .65rem; }
.evidence-choice span { place-items: center; text-align: center; }
.selector-result { background: var(--ink); }
.selector-result h2, .selector-result dt { color: #fff; }
.selector-result > p, .selector-result dd { color: #cbd6e1; }
.selector-result > a { color: #fff; }
.iq-definition ul { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem 1rem; color: var(--muted); }
.generator-controls { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 1rem; padding: 1rem; border-radius: 0; background: var(--cream); }
.generator-controls label, .framer-form label, .matrix-setup label { display: grid; gap: .35rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
input, textarea, select { width: 100%; padding: .72rem .8rem; border: 1px solid var(--line); border-radius: 0; background: var(--paper); color: var(--text); }
.generated-challenge, .riddle-card { margin-top: 1rem; padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--line); border-radius: 0; background: var(--paper); }
.generated-challenge > p, .riddle-card > p { margin-top: .8rem; font-size: 1.08rem; }
.inline-reveal { margin-top: 1rem; padding: 1.2rem; border-radius: 0; background: var(--cream); }
.inline-reveal p { margin-top: .4rem; }
.inline-reveal strong { display: block; margin-top: 1rem; }
.tool-explainer { padding-bottom: 3rem; }
.tool-explainer h2 + p { margin-top: .7rem; }
.tool-explainer h2:not(:first-child) { margin-top: 2.5rem; }

.test-progress { margin-top: 1rem; color: var(--ink); font-weight: 700; }
.test-progress > div { overflow: hidden; height: 8px; margin-top: .5rem; border-radius: 0; background: var(--sand); }
.test-progress i { display: block; width: 12.5%; height: 100%; background: var(--mint-dark); transition: width .2s; }
.test-question { padding: 1.6rem; border: 1px solid var(--line); border-radius: 0; }
.test-question p { margin-top: .8rem; font-size: 1.08rem; }
.test-options { display: grid; gap: .6rem; margin-top: 1.2rem; }
.test-options label { display: flex; gap: .7rem; align-items: flex-start; padding: .8rem; border: 1px solid var(--line); border-radius: 0; cursor: pointer; }
.test-options label:has(input:checked) { border-color: var(--ink); background: var(--cream); }
.test-options input { width: auto; margin-top: .25rem; }
.test-explanation { margin-top: 1rem; padding: 1rem; border-radius: 0; background: var(--cream); }
.test-controls { display: flex; justify-content: space-between; margin-top: 1rem; }
.test-result { padding: 2rem; border-radius: 0; background: #eaf9f4; text-align: center; }
.test-result p { margin-top: .7rem; }

.matrix-setup { display: flex; justify-content: space-between; gap: 2rem; padding: 1rem; border-radius: 0; background: var(--cream); }
.matrix-setup label, .matrix-setup fieldset { grid-template-columns: auto repeat(3, minmax(130px, 1fr)); align-items: center; }
.matrix-setup fieldset { display: grid; gap: .35rem; min-width: 0; margin: 0; padding: 0; border: 0; }
.matrix-setup legend { padding: 0; color: var(--ink); font-size: .82rem; font-weight: 760; }
.matrix-setup p { width: 100%; font-size: .86rem; }
.matrix-table-wrap { overflow-x: auto; margin-block: 1rem; }
.matrix-table { width: 100%; min-width: 700px; border-collapse: collapse; }
.matrix-table th, .matrix-table td { padding: .65rem; border: 1px solid var(--line); text-align: center; }
.matrix-table th:first-child, .matrix-table td:first-child { text-align: left; }
.matrix-results { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; margin-top: 1rem; }
.matrix-result { padding: 1rem; border-radius: 0; background: var(--cream); text-align: center; }
.matrix-result.winner { background: #e5f8f1; }
.matrix-result strong { display: block; font-size: 1.35rem; color: var(--ink); }

.framer { display: grid; grid-template-columns: 1.15fr .85fr; gap: 1.5rem; align-items: start; }
.framer-form { display: grid; gap: 1rem; }
.form-two { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.framer-output { position: sticky; top: calc(var(--header) + 24px); padding: 1.5rem; border-radius: 0; background: var(--ink); color: #fff; }
.framer-output h2, .framer-output h3 { color: #fff; }
.framer-output p, .framer-output li { color: #d3dce6; }
.framer-output h3 { margin-top: 1.2rem; font-size: 1rem; }
.riddle-shell .generator-controls { grid-template-columns: 1fr 1fr auto; }
.selector-shell { padding-block: 2rem 3rem; }
.selector-form { display: grid; grid-template-columns: 1fr 1fr auto; align-items: end; gap: 1rem; padding: 1rem; border-radius: 0; background: var(--cream); }
.selector-form label { display: grid; gap: .35rem; color: var(--ink); font-size: .82rem; font-weight: 760; }
.selector-result { margin-top: 1rem; padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--line); border-radius: 0; }
.selector-result > p { margin-top: .7rem; font-size: 1.05rem; }
.selector-result dl { display: grid; gap: .9rem; margin-block: 1.3rem; }
.selector-result > a { font-weight: 760; }

.policy-page { padding-block: 2rem 3rem; }
.policy-page h2 { margin-top: 2.8rem; }
.policy-page h2:first-child { margin-top: 0; }
.policy-page p, .policy-page ul { margin-top: .8rem; color: #37414d; font-size: 1.03rem; }
.policy-page .page-summary { margin-top: 0; }
.policy-page .page-summary h2 { margin-top: 0; }
.policy-page li + li { margin-top: .5rem; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding-block: 2rem 3rem; }
.contact-grid > div { padding: 1.5rem; border-radius: 0; background: var(--cream); }
.contact-grid p { margin-top: .8rem; }
.glossary-list { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1.25rem; }
.glossary-list article { scroll-margin-top: calc(var(--header) + 24px); padding: 1.4rem; border-radius: 0; background: var(--cream); }
.glossary-list p { margin-top: .65rem; }
.blog-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.blog-grid article { padding: 1.2rem; border: 1px solid var(--line); border-radius: 0; }
.blog-grid img { width: 100%; aspect-ratio: 16 / 9; margin-bottom: 1rem; border-radius: 0; object-fit: cover; }
.blog-grid h2 { font-size: 1.25rem; }
.blog-grid p { margin-top: .6rem; }
.blog-grid article > a:last-child { display: inline-block; margin-top: .8rem; font-weight: 760; }
.pagination { display: flex; justify-content: center; align-items: center; gap: 1rem; margin-top: 2rem; font-weight: 760; }
.pagination span { color: var(--muted); font-size: .88rem; }
.empty-state, .error-page { padding-block: 4rem; text-align: center; }
.empty-state p, .error-page p { margin: .8rem auto 1.4rem; }
.error-mark { display: grid; place-items: center; width: 88px; height: 88px; margin: 0 auto 1.5rem; border-radius: 0; background: var(--coral); color: #fff; font-size: 3rem; font-weight: 900; }
.error-page > div:last-child { display: flex; justify-content: center; gap: .7rem; }
.collection-status { display: flex; justify-content: space-between; align-items: center; gap: 2rem; padding: 1.5rem; border-radius: 0; background: #e9fbf4; }
.collection-status p { width: 100%; margin-top: .5rem; }
.collection-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
.collection-grid article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 0; }
.collection-grid p { margin-top: .65rem; }
.collection-grid ul { color: var(--muted); font-size: .87rem; }
.collection-grid strong { color: var(--coral-dark); font-size: .82rem; }
.sampler-section { padding-block: 3rem; background: var(--cream); }
.sampler-list { display: grid; }
.sampler-list article { padding: 1.25rem 0; }
.sampler-list article + article { border-top: 1px solid var(--line); }
.sampler-list h3 a { color: inherit; text-decoration: none; }
.sampler-list h3 a:hover { color: var(--coral-dark); text-decoration: underline; }
.sampler-list p { margin-top: .45rem; }

.home-rotation { background: var(--sand); }
.rotation-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.rotation-grid article { min-width: 0; padding: 1.2rem; border-radius: 0; background: var(--paper); }
.rotation-grid h3 { font-size: 1.08rem; line-height: 1.25; }
.rotation-grid h3 a { color: inherit; text-decoration: none; }
.rotation-grid h3 a:hover { color: var(--coral-dark); text-decoration: underline; }
.rotation-grid p { margin-top: .55rem; font-size: .9rem; line-height: 1.55; }

.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.visual-games-promo { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: clamp(2rem, 6vw, 5rem); }
.visual-promo-art { overflow: hidden; border-radius: 0; background: var(--cream); }
.visual-promo-art img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.visual-promo-copy p { margin-top: .9rem; font-size: 1.05rem; }
.visual-promo-copy ul { display: grid; gap: .45rem; margin-block: 1.25rem 0; color: var(--muted); }
.visual-page-hero .button { margin-top: 1.5rem; }
.visual-page-hero img { max-height: 310px; }
.visual-game-intro { padding-block: 2.5rem; }
.visual-game-intro .page-summary { margin: 0; }
.visual-game-intro dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; margin: 1.3rem 0 0; }
.visual-game-intro dl div { padding: 1rem; border-radius: 0; background: var(--paper); }
.visual-game-intro dt { color: var(--muted); font-size: .75rem; font-weight: 720; }
.visual-game-intro dd { margin: .15rem 0 0; color: var(--ink); font-weight: 820; }
.visual-playground { padding-block: clamp(2.5rem, 5vw, 4rem); background: var(--ink); }
.visual-playground h2, .visual-playground .section-heading p { color: #fff; }
.game-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.game-picker button { display: grid; gap: .15rem; padding: 1rem; border: 1px solid #50657f; border-radius: 0; background: #1b3557; color: #fff; text-align: left; box-shadow: none; }
.game-picker button[aria-pressed="true"] { border-color: var(--mint); background: #26496f; }
.game-picker span { color: #c9d5e2; font-size: .78rem; }
.visual-game-board, .iq-question, .iq-results { margin-top: 1rem; padding: clamp(1.25rem, 4vw, 2.4rem); border-radius: 0; background: var(--paper); }
.game-board-head, .iq-test-top { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.game-board-head > div, .iq-test-top > div:last-child { display: grid; }
.game-board-head span, .iq-test-top span { color: var(--muted); font-size: .75rem; font-weight: 720; }
.game-board-head strong, .iq-test-top strong { color: var(--ink); font-size: 1.05rem; }
.visual-game-board > h3, .iq-question > h2 { margin-top: 0; text-align: left; }
.game-board-head, .iq-test-top { margin-top: 1rem; }
.puzzle-matrix { display: grid; grid-template-columns: repeat(3, 82px); justify-content: center; gap: .45rem; margin: 1.5rem auto; }
.puzzle-sequence { display: flex; justify-content: center; flex-wrap: wrap; gap: .55rem; margin: 1.5rem auto; }
.puzzle-tile { position: relative; display: grid; place-items: center; width: 82px; height: 82px; overflow: hidden; border: 1px solid var(--line); border-radius: 0; background: var(--cream); }
.missing-tile { color: var(--coral-dark); font-size: 2rem; font-weight: 850; }
.puzzle-marks { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(2, 22px); place-items: center; justify-content: center; gap: 4px; }
.puzzle-marks.count-1 { grid-template-columns: 30px; }
.puzzle-marks.count-3 i:last-child { grid-column: 1 / -1; }
.puzzle-mark { display: block; width: 22px; height: 22px; background: currentColor; }
.puzzle-marks.count-1 .puzzle-mark { width: 30px; height: 30px; }
.shape-circle { border-radius: 50%; }
.shape-square { border-radius: 0; }
.shape-diamond { border-radius: 0; transform: rotate(45deg) scale(.8); }
.shape-triangle { clip-path: polygon(50% 5%, 96% 92%, 4% 92%); }
.color-navy { color: var(--ink); }
.color-coral { color: var(--coral-light); }
.color-mint { color: var(--mint); }
.puzzle-line { position: absolute; z-index: 1; display: block; width: 62px; height: 5px; border-radius: 0; background: #8c9caf; }
.line-vertical { transform: rotate(90deg); }
.line-diagonal { transform: rotate(45deg); }
.visual-answer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; max-width: 520px; margin: 1.3rem auto 0; }
.visual-answer-grid > button { position: relative; display: grid; place-items: center; min-width: 0; padding: .55rem; border: 2px solid transparent; border-radius: 0; background: var(--cream); box-shadow: none; }
.visual-answer-grid > button:hover { border-color: var(--ink); }
.visual-answer-grid > button:disabled { cursor: default; opacity: 1; }
.visual-answer-grid > button.is-correct { border-color: var(--mint-dark); background: #e4f8f1; }
.visual-answer-grid > button.is-wrong { border-color: var(--coral); background: #fff0ec; }
.visual-answer-grid > button.is-selected { border-color: var(--ink); background: #edf3f8; }
.visual-answer-grid .puzzle-tile { width: 72px; height: 72px; border: 0; background: transparent; }
.answer-letter { position: absolute; top: .35rem; left: .45rem; color: var(--muted); font-size: .68rem; font-weight: 820; }
.game-feedback { width: 100%; margin: 1rem auto 0; padding: 1rem; border-radius: 0; color: #25465e; background: #edf3f8; text-align: center; }
.game-feedback.is-correct { color: #075843; background: #e4f8f1; }
.game-feedback.is-wrong { color: #813124; background: #fff0ec; }
.visual-game-board > .button, .iq-question > .button { display: flex; margin: 1rem auto 0; }
.game-methods { padding-bottom: 2rem; }
.visual-game-learning { padding-block: 2rem 3rem; }
.visual-game-learning h3 { margin-top: 2rem; }
.visual-game-learning p { margin-top: .75rem; }
.iq-test-wrap { padding-block: 2rem 3rem; }
.iq-test-top { padding: 1rem 1.25rem; border-radius: 0; background: var(--cream); }
.iq-test-top > div:first-child { flex: 1; }
.iq-progress-track { height: 7px; margin-top: .45rem; overflow: hidden; border-radius: 0; background: var(--sand); }
.iq-progress-track i { display: block; width: 8.33%; height: 100%; background: var(--coral); transition: width .2s ease; }
.iq-skill-context { margin-top: .55rem !important; color: var(--muted); font-size: .95rem !important; }
.iq-skill-context span { color: var(--ink); font-weight: 700; }
.iq-results { text-align: center; }
.iq-results > p { width: 100%; margin: .7rem auto 0; }
.iq-skill-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; margin: 1.5rem 0; text-align: left; }
.iq-skill-grid article { padding: 1rem; border-radius: 0; background: var(--cream); }
.iq-skill-grid strong { display: block; margin-top: .45rem; color: var(--ink); font-size: 1.35rem; }
.iq-skill-grid p { margin-top: .35rem; font-size: .86rem; }
.iq-review-list { display: grid; gap: .8rem; margin-top: 1rem; text-align: left; }
.iq-review-card { position: relative; min-height: 176px; padding: 1.25rem 5.5rem 1.25rem 1.25rem; overflow: hidden; border: 1px solid var(--sand); background: var(--cream); }
.iq-review-card.is-correct { border-color: #8bcdb0; background: linear-gradient(90deg, var(--cream) 0%, var(--cream) 76%, #e4f7ed 100%); }
.iq-review-card.is-incorrect { border-color: #e1a8a0; background: linear-gradient(90deg, var(--cream) 0%, var(--cream) 76%, #fff0ed 100%); }
.iq-review-mark { position: absolute; top: 50%; right: 1.35rem; display: grid; place-items: center; width: 3.4rem; height: 3.4rem; color: var(--coral-dark); font-size: 3rem; font-weight: 900; line-height: 1; transform: translateY(-50%); }
.iq-review-card.is-correct .iq-review-mark { color: var(--mint-dark); }
.iq-review-card h3 { margin-top: 0; }
.iq-review-card p { margin-top: .45rem; }
.iq-result-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; margin-top: 1.2rem; }
.iq-faq { padding-top: 2rem; }
.iq-faq h3 { margin-top: 2rem; }
.iq-faq p { margin-top: .65rem; }

.site-footer { padding-block: 3rem 1.5rem; background: #0d1e35; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 2.5rem; }
.site-footer .brand { color: #fff; }
.site-footer .brand > span > span { color: var(--coral-light); }
.footer-brand p { width: 100%; margin-top: .8rem; color: #aebdcd; }
.site-footer nav { display: grid; align-content: start; gap: .55rem; }
.site-footer nav strong { margin-bottom: .3rem; }
.site-footer nav a { color: #b9c6d4; font-size: .86rem; text-decoration: none; }
.site-footer nav a:hover { color: #fff; }
.footer-note { display: flex; justify-content: space-between; margin-top: 3rem; padding-top: 1.2rem; border-top: 1px solid rgba(255,255,255,.15); color: #8fa2b6; font-size: .75rem; }

@media (max-width: 980px) {
  .desktop-nav, .nav-cta { display: none; }
  .menu-button { display: flex; margin-left: auto; }
  .hero-grid { grid-template-columns: minmax(0, 1fr) minmax(200px, 240px); min-height: auto; gap: 2rem; padding-block: 3rem; }
  .page-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(190px, 230px); gap: 2rem; }
  .tool-hero > .shell { grid-template-columns: minmax(0, 1fr) minmax(240px, 300px); gap: 2rem; }
  .daily-grid, .magazine-grid, .article-columns { grid-template-columns: 1fr; }
  .article-aside { position: static; }
  .article-aside ol { grid-template-columns: 1fr 1fr; }
  .article-columns { gap: 1.5rem; }
  .imported-article { margin-left: 0; }
  .guide-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer-grid nav:last-child { grid-column: 2; }
  .visual-games-promo { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 840px) {
  .hero-grid, .page-hero-grid, .tool-hero > .shell { grid-template-columns: minmax(0, 1fr); }
  .hero-art { width: min(100%, 260px); justify-self: start; }
  .hero-art img { max-height: 170px; object-position: left center; }
  .page-hero-grid img { width: min(100%, 260px); max-height: 180px; justify-self: start; object-position: left center; }
  .tool-hero > .shell > :last-child { width: min(100%, 440px); }
}

@media (max-width: 720px) {
  :root { --header: 68px; }
  .shell { width: min(calc(100% - 28px), var(--shell)); }
  .site-header { height: var(--header); }
  .brand img { width: 37px; height: 37px; }
  .brand { font-size: 1.15rem; }
  .menu-button { min-width: 79px; height: 40px; }
  .breadcrumb { flex-wrap: nowrap; overflow-x: auto; padding-block: .6rem; scrollbar-width: none; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .breadcrumb::-webkit-scrollbar { display: none; }
  .mobile-featured, .mobile-groups { grid-template-columns: 1fr; }
  .mobile-featured a { min-height: 48px; }
  .hero-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1.75rem; padding-block: 2.25rem; }
  .hero-copy h1, .page-hero h1, .tool-hero h1 { font-size: clamp(2.25rem, 10.5vw, 3.35rem); }
  .hero-copy > p, .page-hero p, .tool-hero .answer-lead { font-size: 1.05rem; }
  .hero-art { order: initial; width: min(100%, 220px); }
  .hero-art img { max-height: 150px; object-position: left center; }
  .page-hero, .tool-hero { padding-block: 2.25rem; }
  .page-hero.compact { padding-block: 2rem; }
  .page-hero.compact .shell { width: min(calc(100% - 28px), var(--shell)); }
  .page-hero-grid { gap: 1.75rem; }
  .page-hero-grid img { width: min(100%, 220px); max-height: 160px; }
  .tool-hero > .shell { gap: 1.75rem; }
  .tool-hero > .shell > :last-child { width: 100%; }
  .hero-actions .button { width: 100%; }
  .daily-grid, .tool-grid, .topic-grid, .tool-directory, .contact-grid, .blog-grid, .framer, .collection-grid, .method-library, .challenge-library, .glossary-list, .practice-grid, .problem-type-grid, .rotation-grid, .visual-games-promo, .workbench, .method-strip-layout, .tool-choice-layout, .tool-choice-paths, .home-tool-launcher-grid { grid-template-columns: 1fr; }
  .home-task-choices { grid-template-columns: 1fr; }
  .tool-choice-paths article:last-child { grid-column: auto; }
  .collection-status { align-items: flex-start; flex-direction: column; }
  .daily-card { padding: 1.35rem; }
  .tool-card p { min-height: 0; }
  .section-heading, .guide-group-head, .closing-cta .shell { align-items: flex-start; flex-direction: column; }
  .magazine-lead > div { padding: 1.35rem; }
  .next-actions { flex-direction: column; }
  .guide-grid { grid-template-columns: 1fr; }
  .article-aside ol { grid-template-columns: 1fr; }
  .article-header h1 { font-size: clamp(2.25rem, 10.5vw, 3.35rem); }
  .article-body p { font-size: 1rem; }
  .iq-review-card { min-height: 0; padding-right: 4.25rem; }
  .iq-review-mark { right: .7rem; width: 2.8rem; height: 2.8rem; font-size: 2.4rem; }
  .generator-controls, .riddle-shell .generator-controls, .selector-form, .archive-filters, .practice-log-fields { grid-template-columns: 1fr; }
  .matrix-setup { flex-direction: column; }
  .matrix-setup label, .matrix-setup fieldset { grid-template-columns: 1fr; }
  .matrix-results { grid-template-columns: 1fr; }
  .form-two { grid-template-columns: 1fr; }
  .framer-output { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-grid nav:last-child { grid-column: auto; }
  .footer-note { flex-direction: column; gap: .4rem; }
  .topic-practice .button { width: 100%; }
  .topic-practice .button + .button { margin: .7rem 0 0; }
  .topic-form-reframing-path .topic-narrative, .topic-form-reframing-path .topic-workflow { margin-left: 0; margin-right: 0; }
  .topic-form-problem-operating-system .topic-workflow ol { grid-template-columns: 1fr; }
  .visual-promo-art { order: -1; }
  .visual-game-intro dl, .game-picker { grid-template-columns: 1fr; }
  .visual-answer-grid { grid-template-columns: repeat(2, 1fr); }
  .iq-skill-grid { grid-template-columns: 1fr; }
  .guide-takeaways ul, .guide-related > div, .fieldwork-comparison, .article-method-grid, .article-traps { grid-template-columns: 1fr; }
  .fieldwork-comparison > h3 { grid-column: auto; }
  .board-notes section:nth-child(3n), .model-cards section:first-child, .model-cards section:last-child, .portfolio-grid section:nth-child(3n), .flow-panels section:nth-child(3n + 1) { grid-column: auto; }
  .evidence-file section, .reference-blocks section, .brief-sections section { display: block; }
  .alternating-notes section, .calibration-panels section { width: 100%; }
  .chain-blocks section:nth-child(3n + 2), .chain-blocks section:nth-child(3n), .case-panels section:nth-child(even) { margin-left: 0; }
  .answer-panel[data-answer-form="two-case-proof"] ol, .answer-panel[data-answer-form="search-tree"] ol { grid-template-columns: 1fr; }
  .puzzle-studio, .reasoning-lab, .riddle-theatre { grid-template-columns: 1fr; }
  .generator-rail { position: static; }
  .generator-hero dl, .shape-choice-grid, .evidence-choice, .iq-definition ul { grid-template-columns: 1fr; }
  .riddle-guess > div { align-items: stretch; flex-direction: column; }
}

@media (max-width: 430px) {
  .menu-button-label { font-size: .68rem; }
  .challenge-toolbar { align-items: flex-start; flex-direction: column; }
  .challenge-buttons .button { width: 100%; }
  .test-controls { gap: .5rem; }
  .test-controls .button { flex: 1; }
  .footer-grid { grid-template-columns: 1fr; }
  .puzzle-matrix { grid-template-columns: repeat(3, 72px); }
  .puzzle-tile { width: 72px; height: 72px; }
}

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