/* Self-hosted: fonts.googleapis.com is blocked in mainland China. Latin subset. */
@font-face {
  font-family: 'Barlow';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url(/fonts/barlow-300.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Barlow';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/barlow-400.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Barlow';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/barlow-600.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Barlow';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/barlow-700.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Barlow Condensed';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/barlow-condensed-400.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Barlow Condensed';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/barlow-condensed-600.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
/* ══════════════════════════════════════════════════════════════════════════
   GEODESIC
   Design language after xtxmarkets.com — black ground, a single accent,
   Barlow 300 body / 700 uppercase headings, chamfered clip-path corners,
   prose indented from flush-left headings, dashed accent underlines.
   Dark only. That is the look, not an oversight.
   ══════════════════════════════════════════════════════════════════════════ */

:root {
    --bg:       #000000;
    --fg:       #ffffff;
    --fg-dim:   #ffffffb0;
    --fg-faint: #ffffff55;
    --rule:     #ffffff26;

    /* One accent. Signal amber. */
    --acc:      #E2A33C;
    --acc-dim:  #E2A33C99;
    --acc-lo:   #E2A33C33;

    --font: 'Barlow', 'Bahnschrift', arial, helvetica, sans-serif;
    --cond: 'Barlow Condensed', 'Barlow', arial, sans-serif;

    /* Chamfered corners — the structural motif */
    --clip-14: polygon(0 14px, 14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
    --clip-24: polygon(0 24px, 24px 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);

    --indent: 100px;
    --measure: 800px;
    --wide: 1300px;

    word-wrap: break-word;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font);
    font-weight: 300;
    font-size: 19px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100%;
    overflow-x: hidden;
}

/* Canvas sits behind everything */
#paths {
    position: fixed;
    inset: -34px -40px;                 /* inflated so pointer parallax never shows an edge */
    width: calc(100% + 80px);
    height: calc(100% + 68px);
    z-index: 0; pointer-events: none;
}

header, .page-content, footer, .mobile-nav {
    width: 100%; max-width: var(--wide);
    margin: 0 auto; padding: 0 30px;
    position: relative; z-index: 2;
}

.page-content { margin-top: 120px; flex: 1 0 auto; }

#skiptocontent a { position: absolute; top: -100px; left: 0; z-index: 9; background: var(--acc); color: #000; padding: 8px 14px; }
#skiptocontent a:focus { top: 0; }

/* ── Type ──────────────────────────────────────────────────────── */
h1, h2 {
    text-transform: uppercase;
    font-weight: 700;
    line-height: 1.02;
    letter-spacing: -.005em;
    margin: 0 0 .5em;
    max-width: var(--measure);
}
h1 { font-size: clamp(2.4rem, 7vw, 4.4rem); }
h2 { font-size: clamp(1.7rem, 4vw, 2.8rem); margin-top: 0; }

h3 {
    text-transform: uppercase;
    font-weight: 600;
    font-size: clamp(1.05rem, 2vw, 1.35rem);
    letter-spacing: .04em;
    margin: 0 0 .6em;
}

p, ul, ol { max-width: var(--measure); }
p { margin: 0 0 1.15em; }

/* Prose indents; headings stay flush left. XTX's strongest structural move. */
.page-content p,
.page-content ul,
.page-content ol,
.page-content .table,
.page-content .facts,
.page-content details,
footer .links, footer p {
    margin-left: var(--indent);
}
.page-content .table, .page-content .facts { max-width: var(--measure); }

a {
    color: currentColor;
    text-decoration: none;
    border-bottom: 1px dashed var(--acc);
    transition: color .15s, border-color .15s;
}
a:hover { color: var(--acc); }

em { font-style: normal; color: var(--acc); }
b  { font-weight: 600; }

hr {
    margin: 90px 0 20px;
    max-width: 300px; width: 100%;
    border: none; border-top: 1px solid var(--acc);
    align-self: flex-start;
    position: relative; z-index: 2;
}

ul { list-style-type: square; padding-left: 1.1em; }
li { margin-bottom: .55em; }
li::marker { color: var(--acc); }

.cta {
    display: inline-block;
    text-transform: uppercase;
    font-weight: 400; font-size: .8rem; letter-spacing: .1em;
    border: 1px solid var(--acc-dim);
    border-radius: 3px;
    padding: 9px 16px 7px;
    transition: border-color .15s, background .15s, color .15s;
}
.cta:hover { border-color: var(--fg); color: var(--fg); background: #ffffff0d; }
.cta.ghost { border-color: var(--rule); }

/* ── Header ────────────────────────────────────────────────────── */
header {
    position: fixed; top: 0; left: 50%; translate: -50% 0;
    height: 84px; z-index: 20;
    display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
    background: #000000cc;
    backdrop-filter: blur(6px);
    transition: height .18s ease-out, background .18s;
    border-bottom: 1px solid transparent;
}
header.collapsed { height: 52px; border-bottom-color: var(--rule); }

header .logo { text-align: center; }
header .logo a { border: none; display: inline-flex; align-items: center; gap: 11px; }
header .logo svg { transition: width .2s, height .2s; flex: none; }
header.collapsed .logo svg { width: 24px; height: 24px; }

.wordmark {
    font-family: var(--cond);
    text-transform: uppercase;
    font-weight: 600; font-size: 1.5rem;
    letter-spacing: .22em; padding-left: .22em;
    transition: font-size .2s;
    white-space: nowrap;
}
header.collapsed .wordmark { font-size: 1.15rem; }

.nav { display: flex; gap: 19px; }
.nav.right { justify-content: flex-end; }
.nav a {
    text-transform: uppercase;
    font-size: .78rem; letter-spacing: .12em; font-weight: 400;
    border-bottom: none; color: var(--fg-dim);
    padding-bottom: 2px;
}
.nav a:hover { color: var(--acc); }
.nav a.cta { color: var(--fg); }

.menu-btn {
    display: none; background: none; border: 1px solid var(--rule);
    color: var(--fg); font-family: var(--font); text-transform: uppercase;
    font-size: .75rem; letter-spacing: .12em; padding: 7px 13px;
    border-radius: 3px; cursor: pointer; justify-self: end;
}

.mobile-nav {
    position: fixed; top: 52px; left: 50%; translate: -50% 0;
    z-index: 19; background: #000000f2; backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--rule);
    display: none; flex-direction: column; padding-block: 18px 26px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
    border: none; text-transform: uppercase; letter-spacing: .12em;
    font-size: 1.05rem; padding: 11px 0; color: var(--fg-dim);
}
.mobile-nav a:hover { color: var(--acc); }

/* ── Hero ──────────────────────────────────────────────────────── */
.hero { padding-top: 4vh; }
.hero-h1 { margin-bottom: .38em; line-height: 1.04; }   /* the word-rise spans clip if the lines are tighter */
.hero-h1 .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: .04em; }
.hero-h1 .w > i {
    display: inline-block; font-style: normal;
    transform: translateY(105%);
    transition: transform .85s cubic-bezier(.19,1,.22,1);
}
.hero-h1.in .w > i { transform: none; }

.hero-sub {
    font-size: clamp(1.02rem, 1.6vw, 1.2rem);
    color: var(--fg-dim);
    border-left: 1px solid var(--acc);
    padding-left: 22px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2em; }

/* ── Sections ──────────────────────────────────────────────────── */
.section { padding: 40px 0 0; }
.aside { color: var(--fg-faint); font-size: .93rem; margin-top: 2.2em; }

.record-list { list-style: none; padding-left: 0; }
.record-list li {
    padding: 11px 0 11px 26px;
    border-top: 1px solid var(--rule);
    position: relative; color: var(--fg-dim); font-size: .97rem;
}
.record-list li:last-child { border-bottom: 1px solid var(--rule); }
.record-list li::before {
    content: ''; position: absolute; left: 0; top: 1.05em;
    width: 7px; height: 7px; background: var(--acc);
    clip-path: polygon(0 0, 100% 0, 100% 100%);
}
.record-list b { color: var(--fg); font-weight: 600; }

/* ── Offer blocks ──────────────────────────────────────────────── */
.block {
    margin: 54px 0 0 var(--indent);
    max-width: var(--measure);
    border: 1px solid var(--rule);
    clip-path: var(--clip-24);
    padding: 30px 30px 12px;
    background: #ffffff05;
    transition: border-color .25s, background .25s;
}
.block:hover { border-color: var(--acc-lo); background: #ffffff0a; }
/* The block is already indented; its contents must not indent again. */
.page-content .block p,
.page-content .block .table { margin-left: 0; }

.block h3 { display: flex; align-items: center; gap: 13px; }
.ix {
    flex: none;
    width: 26px; height: 26px;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid var(--acc); color: var(--acc);
    font-size: .78rem; font-weight: 400; letter-spacing: 0;
    clip-path: polygon(0 6px, 6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}
.block-for { color: var(--fg-faint); font-size: .93rem; max-width: 62ch; }

.table { margin-top: 22px; }
.row {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 26px; padding: 17px 0;
    border-top: 1px solid var(--rule);
}
.row.marked { position: relative; }
.row.marked::before {
    content: ''; position: absolute; left: -30px; top: 17px; bottom: 17px;
    width: 2px; background: var(--acc);
}
.row-main b { display: block; font-size: 1rem; margin-bottom: .25em; }
.row-main span { display: block; color: var(--fg-faint); font-size: .87rem; line-height: 1.45; }
.row-fig {
    font-family: var(--cond);
    font-size: 1.75rem; font-weight: 400;
    white-space: nowrap; letter-spacing: .01em;
    color: var(--acc);
}
.row-fig i { font-style: normal; }
.row-fig em { font-size: .5em; color: var(--fg-faint); }

/* ── Steps ─────────────────────────────────────────────────────── */
.steps { list-style: none; padding-left: 0; counter-reset: s; }
.steps li {
    counter-increment: s;
    padding: 18px 0 18px 62px;
    border-top: 1px solid var(--rule);
    position: relative;
}
.steps li:last-child { border-bottom: 1px solid var(--rule); }
.steps li::before {
    content: '0' counter(s);
    position: absolute; left: 0; top: 18px;
    font-family: var(--cond); font-size: 1.1rem;
    color: var(--acc); letter-spacing: .1em;
}
.steps b { display: block; text-transform: uppercase; letter-spacing: .06em; font-size: .95rem; margin-bottom: .3em; }
.steps span { color: var(--fg-dim); font-size: .93rem; }

/* ── About ─────────────────────────────────────────────────────── */
.sig { margin-top: 2.4em; display: flex; flex-direction: column; gap: 3px; }
.sig b { font-family: var(--cond); text-transform: uppercase; letter-spacing: .18em; font-size: 1.2rem; }
.sig span { color: var(--fg-faint); font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; }

.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 46px; }
.facts .fact {
    border: 1px solid var(--rule); clip-path: var(--clip-14);
    padding: 20px 20px 18px; background: #ffffff05;
    transition: border-color .25s;
}
.facts .fact:hover { border-color: var(--acc-lo); }
.facts b { display: block; text-transform: uppercase; font-size: .78rem; letter-spacing: .12em; color: var(--acc); margin-bottom: .55em; }
.facts span { font-size: .87rem; color: var(--fg-dim); line-height: 1.45; }

/* ── Disclosure ────────────────────────────────────────────────── */
details.collapse {
    border-top: 1px solid var(--rule);
    max-width: var(--measure);
}
details.collapse:last-of-type { border-bottom: 1px solid var(--rule); }
details.collapse[open] { background: #ffffff08; }
details.collapse summary {
    padding: 17px 10px 17px 0; cursor: pointer;
    font-weight: 400; font-size: 1rem; list-style-type: '＋';
    transition: color .15s;
}
details.collapse[open] summary { list-style-type: '－'; color: var(--acc); }
details.collapse summary:hover { color: var(--acc); }
details.collapse summary::marker { color: var(--acc); font-weight: 300; }
.page-content details.collapse p {
    margin-left: 0; padding: 0 40px 20px 26px;
    color: var(--fg-dim); font-size: .93rem;
}

/* ── Footer ────────────────────────────────────────────────────── */
footer { padding-block: 60px 40px; border-top: 1px solid var(--rule); margin-top: 90px; }
footer .links { display: flex; flex-wrap: wrap; gap: 24px; margin-bottom: 22px; }
footer .links a {
    border: none; text-transform: uppercase;
    font-size: .76rem; letter-spacing: .12em; color: var(--fg-dim);
}
footer .links a:hover { color: var(--acc); }
.fine { color: var(--fg-faint); font-size: .76rem; letter-spacing: .04em; line-height: 1.8; }

/* ── Reveal ────────────────────────────────────────────────────── */
.rv { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s cubic-bezier(.19,1,.22,1); }
.rv.in { opacity: 1; transform: none; }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 1000px) {
    :root { --indent: 46px; }
    .facts { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    :root { --indent: 0px; }
    body { font-size: 17px; }
    header { height: 62px; grid-template-columns: 1fr auto; }
    header.collapsed { height: 52px; }
    .nav { display: none; }
    .menu-btn { display: block; }
    header .logo { text-align: left; }
    .page-content { margin-top: 88px; }
    .block { margin-left: 0; padding: 24px 20px 10px; }
    .row { flex-direction: column; gap: 8px; }
    .row.marked::before { left: -20px; }
    .row-fig { font-size: 1.5rem; }
    hr { margin: 64px 0 16px; }
    footer { margin-top: 64px; }
}

/* ── Reduced motion ────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
    .rv { opacity: 1; transform: none; }
    .hero-h1 .w > i { transform: none; }
}

/* ══════════════════════════════════════════════════════════════════════════
   MULTI-PAGE COMPONENTS
   ══════════════════════════════════════════════════════════════════════════ */

/* Current page in nav */
.nav a[data-here] { color: var(--acc); }
.nav a[data-here].cta { color: var(--fg); border-color: var(--acc); }
.mobile-nav a[data-here] { color: var(--acc); }

/* Short hero on interior pages */
.hero.short { padding-top: 2vh; min-height: 0; }
.hero.short .hero-h1 { font-size: clamp(2rem, 5.2vw, 3.4rem); }
.crumb {
    text-transform: uppercase; letter-spacing: .14em; font-size: .74rem;
    color: var(--fg-faint); margin-bottom: 1.4em;
}
.crumb a { border-bottom-color: var(--acc-dim); }

/* Card grid (segment teasers) */
.cards {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
    margin-left: var(--indent); max-width: var(--measure);
}
.card {
    border: 1px solid var(--rule); clip-path: var(--clip-24);
    padding: 26px 24px 22px; background: #ffffff05;
    display: flex; flex-direction: column; gap: 10px;
    border-bottom: 1px solid var(--rule);
    transition: border-color .25s, background .25s, transform .25s;
}
.card:hover { border-color: var(--acc-lo); background: #ffffff0c; transform: translateY(-3px); color: var(--fg); }
.card h3 { margin: 0; font-size: 1.05rem; }
.card p { margin: 0; font-size: .88rem; color: var(--fg-faint); flex: 1; }
.card .ix { margin-bottom: 4px; }
.card-from { font-family: var(--cond); font-size: 1.15rem; color: var(--acc); }
.card-go { font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--fg-faint); }
.card:hover .card-go { color: var(--acc); }

/* Total row inside a programme table */
.row.total { border-top: 1px solid var(--acc-lo); }
.row.total .row-main b { color: var(--acc); text-transform: uppercase; letter-spacing: .1em; font-size: .8rem; }

/* Steps — expanded variant on /method */
.steps.big li { padding-block: 26px; }
.steps.big span { font-size: .96rem; }

/* Geography strip */
.geo {
    display: flex; flex-wrap: wrap; gap: 8px;
    margin-left: var(--indent); max-width: var(--measure);
}
.geo span, .geo a {
    border: 1px solid var(--rule); padding: 6px 13px;
    font-size: .8rem; color: var(--fg-dim); letter-spacing: .04em;
    clip-path: polygon(0 6px, 6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
    transition: border-color .25s, color .25s;
}
.geo span:hover, .geo a:hover { border-color: var(--acc); color: var(--acc); }

/* ── Testimonials ──────────────────────────────────────────────── */
.tm-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
    margin-left: var(--indent); max-width: var(--measure);
}
.tm {
    border: 1px solid var(--rule); clip-path: var(--clip-24);
    padding: 26px 24px 22px; background: #ffffff05; margin: 0;
    display: flex; flex-direction: column; gap: 14px;
    transition: border-color .25s, background .25s;
}
.tm:hover { border-color: var(--acc-lo); background: #ffffff0a; }
.tm-flag {
    font-family: var(--cond); font-size: .78rem; letter-spacing: .18em;
    color: var(--acc); border: 1px solid var(--acc-lo);
    width: fit-content; padding: 3px 9px 1px;
}
.tm blockquote { margin: 0; flex: 1; }
.tm blockquote p {
    margin: 0; font-size: .95rem; color: var(--fg-dim); line-height: 1.55;
    max-width: none;
}
.tm blockquote p::before { content: '“'; color: var(--acc); }
.tm blockquote p::after  { content: '”'; color: var(--acc); }
.tm figcaption { display: flex; flex-direction: column; gap: 3px; border-top: 1px solid var(--rule); padding-top: 14px; }
.tm figcaption b { font-size: .92rem; }
.tm figcaption span { font-size: .78rem; color: var(--fg-faint); }
.tm-empty { opacity: .55; }
.tm-empty blockquote p { font-style: italic; }

/* ── Payment ───────────────────────────────────────────────────── */
.pk-list { margin-top: 20px; }
.pk {
    display: grid; grid-template-columns: 1fr auto auto;
    gap: 22px; align-items: center;
    padding: 18px 0; border-top: 1px solid var(--rule);
}
.pk-main b { display: block; font-size: 1rem; margin-bottom: .25em; }
.pk-main span { display: block; font-size: .85rem; color: var(--fg-faint); line-height: 1.45; }
.pk-fig { text-align: right; white-space: nowrap; }
.pk-total { font-family: var(--cond); font-size: 1.5rem; color: var(--acc); }
.pk-dep { font-size: .74rem; color: var(--fg-faint); text-transform: uppercase; letter-spacing: .08em; }
.pk .cta { white-space: nowrap; }
.pk .cta[data-unset] { opacity: .4; border-style: dashed; cursor: not-allowed; }

.notice {
    margin: 34px 0 0 var(--indent); max-width: var(--measure);
    border: 1px dashed var(--acc-dim); clip-path: var(--clip-14);
    padding: 20px 22px; background: #E2A33C0d;
}
.notice b { display: block; color: var(--acc); margin-bottom: .4em; font-size: .95rem; }
.notice p { margin: 0; font-size: .88rem; color: var(--fg-dim); }

/* ── Enquiry form ──────────────────────────────────────────────── */
.enq { margin-left: var(--indent); max-width: 620px; display: flex; flex-direction: column; gap: 20px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: .82rem; text-transform: uppercase; letter-spacing: .1em; color: var(--fg-dim); }
.field input[type=text], .field input[type=email], .field select, .field textarea {
    background: #ffffff08; border: 1px solid var(--rule); color: var(--fg);
    font-family: var(--font); font-size: .95rem; font-weight: 300;
    padding: 11px 13px; border-radius: 2px;
    transition: border-color .2s, background .2s;
}
.field input:focus, .field select:focus, .field textarea:focus {
    outline: none; border-color: var(--acc); background: #ffffff0d;
}
.field textarea { resize: vertical; line-height: 1.5; }
.field select { appearance: none; cursor: pointer;
    background-image: linear-gradient(45deg, transparent 50%, var(--acc) 50%), linear-gradient(135deg, var(--acc) 50%, transparent 50%);
    background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
    background-size: 5px 5px, 5px 5px; background-repeat: no-repeat; }
.field select option { background: #111; color: var(--fg); }
.hint { font-size: .8rem; color: var(--fg-faint); margin: 2px 0 0; max-width: none; }
.field.consent label { display: flex; gap: 11px; align-items: flex-start; text-transform: none; letter-spacing: 0; font-size: .85rem; line-height: 1.5; color: var(--fg-faint); }
.field.consent input { margin-top: 3px; accent-color: var(--acc); flex: none; }
.enq button { align-self: flex-start; cursor: pointer; font-family: var(--font); background: none; }

/* ── Footer (multi-column) ─────────────────────────────────────── */
.foot-grid {
    display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 30px;
    padding-bottom: 34px; border-bottom: 1px solid var(--rule);
}
.foot-col { display: flex; flex-direction: column; gap: 9px; }
.foot-col b { text-transform: uppercase; font-size: .74rem; letter-spacing: .14em; color: var(--acc); margin-bottom: 3px; }
.foot-col a { border: none; font-size: .86rem; color: var(--fg-dim); }
.foot-col a:hover { color: var(--acc); }
.foot-mark { font-family: var(--cond); text-transform: uppercase; letter-spacing: .22em; font-size: 1.15rem; }
.foot-legal { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding-top: 22px; }
.foot-legal p { margin: 0; }
.foot-legal a { border: none; color: var(--fg-faint); }
.foot-legal a:hover { color: var(--acc); }

@media (max-width: 1000px) {
    .cards, .tm-grid { grid-template-columns: 1fr; }
    .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
    .cards, .tm-grid, .geo, .enq, .notice { margin-left: 0; }
    .pk { grid-template-columns: 1fr; gap: 12px; }
    .pk-fig { text-align: left; }
    .foot-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ── Currency selector on /pay ─────────────────────────────────── */
.cur-row {
    display: flex; align-items: center; flex-wrap: wrap; gap: 12px;
    margin: 0 0 30px var(--indent); max-width: var(--measure);
}
.cur-row label {
    font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; color: var(--fg-dim);
}
.cur-row select {
    background: #ffffff08; border: 1px solid var(--rule); color: var(--fg);
    font-family: var(--font); font-size: .88rem; font-weight: 300;
    padding: 8px 34px 8px 12px; border-radius: 2px; cursor: pointer; appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--acc) 50%),
                      linear-gradient(135deg, var(--acc) 50%, transparent 50%);
    background-position: calc(100% - 17px) 50%, calc(100% - 12px) 50%;
    background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
    transition: border-color .2s;
}
.cur-row select:focus { outline: none; border-color: var(--acc); }
.cur-row select option { background: #111; color: var(--fg); }
.cur-note { font-size: .78rem; color: var(--fg-faint); }

/* Pay button is a <button>, so reset UA styling to match .cta anchors */
button.cta {
    background: none; font-family: var(--font); cursor: pointer;
    color: var(--fg); line-height: normal;
}
button.cta:disabled { opacity: .5; cursor: wait; border-style: dashed; }

@media (max-width: 760px) { .cur-row { margin-left: 0; } }

/* ── Long-form article ─────────────────────────────────────────── */
.article h2 {
    font-size: clamp(1.2rem, 2.2vw, 1.6rem);
    margin: 2.4em 0 .9em var(--indent);
    max-width: var(--measure);
    text-transform: uppercase; letter-spacing: .01em;
}
.article h2::before {
    content: ''; display: block; width: 46px; height: 1px;
    background: var(--acc); margin-bottom: .8em;
}
.article p { font-size: 1.02rem; line-height: 1.62; }
.article p i { color: var(--fg); font-style: italic; }
.article p b { color: var(--fg); }
.article .hero-cta { margin-top: 3em; }
@media (max-width: 760px) { .article h2 { margin-left: 0; } }

.notice.alt { border-style: solid; border-color: var(--rule); background: #ffffff06; }
.notice.alt b { color: var(--fg); }

.pk-cta { display: flex; flex-direction: column; align-items: flex-end; gap: 7px; }
.pk-test {
    font-size: .58rem; text-transform: uppercase; letter-spacing: .12em;
    color: var(--acc); border: 1px solid var(--acc-lo); padding: 2px 7px;
    white-space: nowrap;
}
@media (max-width: 760px) { .pk-cta { align-items: flex-start; } }

/* ── Share row ─────────────────────────────────────────────────── */
.share {
    display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
    max-width: var(--measure); margin: 3.5rem 0 0 var(--indent);
    padding-top: 22px; border-top: 1px solid var(--rule);
}
.share-label {
    font-size: .72rem; text-transform: uppercase; letter-spacing: .14em;
    color: var(--acc); margin-right: 4px;
}
.share a, .share-copy {
    font-family: var(--font); font-size: .78rem; font-weight: 300;
    letter-spacing: .04em; color: var(--fg-dim);
    border: 1px solid var(--rule); background: none; cursor: pointer;
    padding: 6px 12px; border-bottom: 1px solid var(--rule);
    clip-path: polygon(0 5px, 5px 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%);
    transition: border-color .2s, color .2s;
}
.share a:hover, .share-copy:hover { border-color: var(--acc); color: var(--acc); }
.share-copy.done { color: var(--acc); border-color: var(--acc); }
@media (max-width: 760px) { .share { margin-left: 0; } }

/* ── Verse ─────────────────────────────────────────────────────── */
.poem {
    margin-left: var(--indent); max-width: var(--measure);
    border-left: 1px solid var(--acc-lo); padding-left: 28px;
}
.page-content .poem p {
    /* the .poem block is already indented; cancel the global prose indent */
    margin-left: 0;
    font-size: 1rem; line-height: 1.85; color: var(--fg-dim);
    margin-bottom: 2.2em; max-width: none;
}
.poem p i { color: var(--acc); font-style: italic; }
.poem-page h2 { margin-top: 3em; }
@media (max-width: 760px) {
    .poem { margin-left: 0; padding-left: 16px; }
    .poem p { font-size: .92rem; line-height: 1.75; }
}

/* ══════════════════════════════════════════════════════════════════════════
   AI assistant panel
   ══════════════════════════════════════════════════════════════════════════ */
.ai-open { cursor: pointer; font-family: var(--font); background: none; }

.ai-panel {
    position: fixed; right: 22px; bottom: 22px; z-index: 60;
    width: min(430px, calc(100vw - 32px));
    height: min(620px, calc(100vh - 110px));
    display: flex; flex-direction: column;
    background: #0a0a0a; border: 1px solid var(--rule);
    clip-path: var(--clip-24);
    box-shadow: 0 24px 70px #000000cc;
}
.ai-panel[hidden] { display: none; }
.ai-panel.in { animation: aiIn .28s cubic-bezier(.19,1,.22,1); }
@keyframes aiIn { from { opacity: 0; transform: translateY(14px); } }

.ai-head {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: 12px; padding: 20px 20px 14px; border-bottom: 1px solid var(--rule);
}
.ai-head b { display: block; font-size: .95rem; color: var(--fg); }
.ai-head span { display: block; font-size: .72rem; color: var(--fg-faint); margin-top: 4px; line-height: 1.45; }
.ai-close {
    background: none; border: 0; color: var(--fg-faint); cursor: pointer;
    font-size: 1rem; padding: 2px 4px; flex: none;
}
.ai-close:hover { color: var(--acc); }

.ai-model {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 20px; border-bottom: 1px solid var(--rule);
}
.ai-model label {
    font-size: .68rem; text-transform: uppercase; letter-spacing: .14em; color: var(--fg-faint);
}
.ai-model select {
    flex: 1; background: #ffffff08; border: 1px solid var(--rule); color: var(--fg);
    font-family: var(--font); font-size: .8rem; font-weight: 300;
    padding: 6px 28px 6px 10px; border-radius: 2px; cursor: pointer; appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--acc) 50%),
                      linear-gradient(135deg, var(--acc) 50%, transparent 50%);
    background-position: calc(100% - 15px) 50%, calc(100% - 10px) 50%;
    background-size: 5px 5px, 5px 5px; background-repeat: no-repeat;
}
.ai-model select:focus { outline: none; border-color: var(--acc); }
.ai-model select option { background: #111; }

.ai-log { flex: 1; overflow-y: auto; padding: 18px 20px; display: flex; flex-direction: column; gap: 16px; }
.ai-msg p { margin: 0 0 .7em; font-size: .87rem; line-height: 1.55; max-width: none; }
.ai-msg p:last-child { margin-bottom: 0; }
.ai-msg.bot p { color: var(--fg-dim); }
.ai-msg.you {
    align-self: flex-end; max-width: 85%;
    border: 1px solid var(--acc-lo); background: #E2A33C0d;
    padding: 10px 13px; clip-path: var(--clip-14);
}
.ai-msg.you p { color: var(--fg); }
.ai-msg.err p { color: var(--acc); }
.ai-cursor::after {
    content: '▌'; color: var(--acc); animation: aiBlink 1s steps(2) infinite;
}
@keyframes aiBlink { 50% { opacity: 0; } }

.ai-form { display: flex; gap: 9px; padding: 14px 20px 18px; border-top: 1px solid var(--rule); }
.ai-form textarea {
    flex: 1; resize: none; background: #ffffff08; border: 1px solid var(--rule);
    color: var(--fg); font-family: var(--font); font-size: .87rem; font-weight: 300;
    padding: 9px 11px; border-radius: 2px; line-height: 1.45;
}
.ai-form textarea:focus { outline: none; border-color: var(--acc); }
.ai-form .cta { align-self: flex-end; cursor: pointer; font-family: var(--font); background: none; }
.ai-form .cta:disabled { opacity: .45; cursor: wait; }

@media (max-width: 680px) {
    .ai-panel { right: 8px; left: 8px; bottom: 8px; width: auto; height: min(78vh, 560px); }
}
@media (prefers-reduced-motion: reduce) { .ai-panel.in { animation: none; } }

/* ══════════════════════════════════════════════════════════════════════════
   Institution logos
   Real crests and wordmarks are heterogeneous — full colour, different aspect
   ratios, some light-on-dark. A pale chip behind each one lets them sit
   together on a black page without recolouring anything.
   ══════════════════════════════════════════════════════════════════════════ */
.creds {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
    margin: 0 0 0 var(--indent); max-width: var(--measure);
}
.cred {
    border: 1px solid var(--rule); clip-path: var(--clip-24);
    padding: 24px 20px 20px; background: #ffffff05;
    display: flex; flex-direction: column; align-items: center; text-align: center; gap: 4px;
    transition: border-color .3s var(--ease), background .3s;
}
.cred:hover { border-color: var(--acc-lo); background: #ffffff0a; }
.cred-logo {
    display: flex; align-items: center; justify-content: center;
    width: 84px; height: 84px; margin-bottom: 12px;
    background: #f4f1ea; border-radius: 50%; padding: 12px;
}
.cred-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }
.cred b { display: block; font-size: .92rem; color: var(--fg); font-weight: 600; line-height: 1.3; }
.cred > span { display: block; font-size: .8rem; color: var(--fg-faint); line-height: 1.45; }
.cred .cred-note {
    margin-top: 8px; font-size: .6rem; text-transform: uppercase; letter-spacing: .1em;
    color: var(--acc); border: 1px solid var(--acc-lo); padding: 4px 9px;
}

/* Destinations row */
.dest-head {
    margin-left: var(--indent); font-size: .74rem; letter-spacing: .16em;
    color: var(--fg-faint); margin-top: 2.4em; margin-bottom: 1.1em;
}
.dest {
    display: flex; flex-wrap: wrap; gap: 12px;
    margin-left: var(--indent); max-width: var(--measure);
}
.dest-logo {
    width: 74px; height: 74px; flex: none;
    display: flex; align-items: center; justify-content: center;
    background: #f4f1ea; border-radius: 3px; padding: 10px;
    filter: saturate(.85);
    transition: transform .25s var(--ease), filter .25s;
}
.dest-logo:hover { transform: translateY(-3px); filter: none; }
.dest-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }

/* The interviewer credential, given its own weight */
.interviewer {
    margin: 46px 0 0 var(--indent); max-width: var(--measure);
    border: 1px solid var(--acc-lo); clip-path: var(--clip-24);
    background: linear-gradient(180deg, #E2A33C0e, transparent 70%);
    padding: 28px 30px; display: flex; gap: 22px; align-items: flex-start;
}
.interviewer .cred-logo {
    width: 64px; height: 64px; min-width: 64px; flex: none;
    margin: 0; padding: 9px;   /* flex was stretching it into an ellipse */
}
.interviewer b { display: block; font-size: 1.05rem; color: var(--fg); margin-bottom: .5em; }
.interviewer p { margin: 0; font-size: .93rem; color: var(--fg-dim); max-width: none; }

@media (max-width: 900px) { .creds { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
    .creds, .interviewer, .dest, .dest-head { margin-left: 0; }
    .interviewer { flex-direction: column; gap: 14px; }
    .dest-logo { width: 62px; height: 62px; }
}

/* Published work */
.research {
    margin: 0 0 0 var(--indent); max-width: var(--measure);
    border-left: 2px solid var(--acc); padding: 2px 0 2px 26px;
}
.research b {
    display: block; font-size: .72rem; text-transform: uppercase;
    letter-spacing: .14em; color: var(--acc); margin-bottom: 1em;
}
.research p { color: var(--fg-dim); }
.page-content .research p { margin-left: 0; }
@media (max-width: 760px) { .research { margin-left: 0; padding-left: 16px; } }

/* ── Rendered mathematics ──────────────────────────────────────── */
.maths {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px;
    margin-left: var(--indent); max-width: var(--measure);
}
.eq {
    margin: 0; border: 1px solid var(--rule); clip-path: var(--clip-24);
    background: #ffffff05; padding: 20px 22px 18px;
    transition: border-color .3s var(--ease);
}
.eq:hover { border-color: var(--acc-lo); }
.eq figcaption {
    font-size: .7rem; text-transform: uppercase; letter-spacing: .12em;
    color: var(--acc); margin-bottom: 16px;
}
.eq math {
    /* `display: block` (plain) discards MathML's internal layout and the browser
       stacks every <mi>/<mo> as a generic box. `block math` keeps the math
       formatting context while still making the element block-level. */
    display: block math; overflow-x: auto; overflow-y: hidden;
    color: var(--fg); font-size: 1.02rem; padding: 6px 0 14px;
    text-align: center;
}
.page-content .eq p {
    margin: 0; margin-left: 0; padding-top: 14px;
    border-top: 1px solid var(--rule);
    font-size: .84rem; color: var(--fg-faint); line-height: 1.5; max-width: none;
}
@media (max-width: 900px) { .maths { grid-template-columns: 1fr; } }
@media (max-width: 760px) { .maths { margin-left: 0; } .eq math { font-size: .92rem; } }

/* ── Assistant: sources, escalation, inline subscribe ──────────── */
.ai-src { font-size: .72rem !important; color: var(--fg-faint) !important; margin-top: .8em !important; }
.ai-src a { border-bottom-color: var(--acc-dim); }

.ai-esc, .ai-sub { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.ai-esc input[type=email], .ai-sub input[type=email] {
    background: #ffffff0d; border: 1px solid var(--rule); color: var(--fg);
    font-family: var(--font); font-size: .85rem; font-weight: 300;
    padding: 9px 11px; border-radius: 2px;
}
.ai-esc input:focus, .ai-sub input:focus { outline: none; border-color: var(--acc); }
.ai-sub label {
    display: flex; align-items: center; gap: 9px;
    font-size: .82rem; color: var(--fg-dim); cursor: pointer;
}
.ai-sub input[type=checkbox] { accent-color: var(--acc); flex: none; }
.ai-esc .cta, .ai-sub .cta {
    align-self: flex-start; cursor: pointer; font-family: var(--font); background: none;
}
.ai-esc .cta:disabled, .ai-sub .cta:disabled { opacity: .5; cursor: wait; }
.ai-model { border-top: 1px solid var(--rule); border-bottom: none; }

/* ── Blog subscribe ────────────────────────────────────────────── */
.sub { margin-left: var(--indent); max-width: var(--measure); }
.sub-topics { border: 0; padding: 0; margin: 0 0 24px; }
.sub-topics legend {
    font-size: .72rem; text-transform: uppercase; letter-spacing: .14em;
    color: var(--acc); padding: 0; margin-bottom: 16px;
}
.sub-topic {
    display: flex; gap: 13px; align-items: flex-start; cursor: pointer;
    padding: 14px 16px; border: 1px solid var(--rule); margin-bottom: 9px;
    clip-path: var(--clip-14); background: #ffffff04;
    transition: border-color .2s, background .2s;
}
.sub-topic:hover { border-color: var(--acc-lo); background: #ffffff09; }
.sub-topic input { accent-color: var(--acc); margin-top: 4px; flex: none; }
.sub-topic b { display: block; color: var(--fg); font-size: .92rem; margin-bottom: 3px; font-weight: 600; }
.sub-topic span { font-size: .84rem; color: var(--fg-faint); line-height: 1.5; }
.sub-topic input:checked + span b { color: var(--acc); }

.sub-row { display: flex; gap: 10px; flex-wrap: wrap; }
.sub-row input[type=email] {
    flex: 1; min-width: 220px;
    background: #ffffff08; border: 1px solid var(--rule); color: var(--fg);
    font-family: var(--font); font-size: .92rem; font-weight: 300;
    padding: 11px 13px; border-radius: 2px;
}
.sub-row input:focus { outline: none; border-color: var(--acc); }
.sub-row .cta { cursor: pointer; font-family: var(--font); background: none; }
.sub-row .cta:disabled { opacity: .5; cursor: wait; }
.page-content .sub-note { margin: 16px 0 0; font-size: .8rem; color: var(--fg-faint); max-width: none; }
.sub-note.err { color: var(--acc); }
.sub-note.ok  { color: var(--acc); }
@media (max-width: 760px) { .sub { margin-left: 0; } }

.lang-note { margin-left: var(--indent); max-width: var(--measure); padding-bottom: 2rem; }
@media (max-width: 760px) { .lang-note { margin-left: 0; } }

.byline {
    font-family: var(--cond);
    font-size: .95rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--fg-dim);
    margin-top: 1.2rem;
}

/* Data tables inside articles */
.page-content table.data {
    margin: 1.6em 0 1.6em var(--indent);
    max-width: var(--measure); width: calc(100% - var(--indent));
    border-collapse: collapse; font-size: .95rem;
}
table.data th, table.data td {
    text-align: left; padding: .55em .9em .55em 0;
    border-bottom: 1px solid var(--rule); vertical-align: top;
}
table.data th {
    font-family: var(--cond); font-weight: 600; text-transform: uppercase;
    letter-spacing: .08em; font-size: .82rem; color: var(--fg-dim);
}
table.data td:first-child { color: var(--fg); white-space: nowrap; }
table.data caption {
    caption-side: bottom; text-align: left; padding-top: .7em;
    color: var(--fg-faint); font-size: .85rem;
}
.article ol { max-width: var(--measure); }
.article ol li, .article ul li { line-height: 1.55; }
@media (max-width: 760px) {
    .page-content table.data { margin-left: 0; width: 100%; font-size: .88rem; }
    table.data td:first-child { white-space: normal; }
}

/* ── Slide deck (blog comparison) ─────────────────────────────────────────
   CSS scroll-snap does the work, so it swipes on touch and scrolls with a
   trackpad with no script at all; script.js only adds buttons, arrow keys and
   the counter. */
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.deck {
    margin: 2.6em 0 1em var(--indent);
    max-width: 980px;
    position: relative;
    min-width: 0;
}
.deck-track {
    /* inline-size containment: the track's width comes from its container, never
       from its content, so a wide table inside a slide cannot widen the page */
    contain: inline-size;
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    scrollbar-width: none;
    outline: none;
}
.deck-track::-webkit-scrollbar { display: none; }
.deck-track:focus-visible { box-shadow: 0 0 0 1px var(--acc); }

.slide {
    flex: 0 0 100%;
    min-width: 0;
    position: relative;     /* anchors the .sr-only chart table inside its own slide */
    scroll-snap-align: start;
    min-height: 440px;
    padding: 38px 42px 34px;
    border: 1px solid var(--rule);
    clip-path: var(--clip-24);
    background: #ffffff05;
    display: flex; flex-direction: column;
}
.page-content .slide p,
.page-content .slide ul { margin-left: 0; }

.slide-k {
    font-family: var(--cond); text-transform: uppercase; letter-spacing: .14em;
    font-size: .72rem; color: var(--acc); margin: 0 0 .7em;
}
.slide-h {
    font-size: clamp(1.3rem, 2.6vw, 1.9rem);
    text-transform: uppercase; font-weight: 700; letter-spacing: .01em;
    margin: 0 0 1.1em;
}
.slide-grid { display: grid; gap: 34px; flex: 1; }
.slide-grid.two   { grid-template-columns: 1.25fr 1fr; }
.slide-grid.three { grid-template-columns: repeat(3, 1fr); }
.slide-col { display: flex; flex-direction: column; gap: .55em; }
.slide-col b { font-size: 1.02rem; }
.slide-col > span { color: var(--fg-dim); font-size: .92rem; line-height: 1.5; }
.slide-foot { color: var(--fg-faint); font-size: .85rem; margin: 1.6em 0 0; }

.slide-col.here {
    border-left: 1px solid var(--acc);
    padding-left: 26px;
}
.here-k {
    font-family: var(--cond); text-transform: uppercase; letter-spacing: .14em;
    font-size: .68rem; color: var(--acc); margin: 0;
}
.slide-cta { align-self: flex-start; margin-top: 1em; }

/* Horizontal bar chart — one series, so one hue and no legend; the title
   names it. Thin marks, 4px rounded data-end, 2px gap, direct labels. */
.chart-t { font-size: .82rem; color: var(--fg-dim); margin: 0 0 1em; }
.chart-s { font-size: .82rem; color: var(--fg-faint); margin: 1.1em 0 0; line-height: 1.5; }
.bars { display: flex; flex-direction: column; gap: 2px; }
.bar {
    display: grid; grid-template-columns: 9.5em 1fr;
    align-items: center; column-gap: 12px;
    padding: 6px 0; position: relative; cursor: default;
}
.bar-l { font-size: .78rem; color: var(--fg-dim); }
.bar-m {
    height: 16px; width: var(--v);
    background: var(--acc);
    border-radius: 0 4px 4px 0;
    grid-column: 2; grid-row: 1;
    transition: opacity .15s;
}
.bar-v {
    grid-column: 2; grid-row: 1; justify-self: start;
    margin-left: calc(var(--v) + 8px);
    font-size: .78rem; color: var(--fg);
    font-variant-numeric: tabular-nums;
}
.bar:last-child .bar-v { margin-left: 0; justify-self: end; padding-right: 8px; color: #000; font-weight: 600; }
.bars:hover .bar-m { opacity: .45; }
.bars .bar:hover .bar-m { opacity: 1; }
.bar::after {
    content: attr(data-tip);
    position: absolute; left: 9.5em; top: -24px; margin-left: 12px;
    background: #111; border: 1px solid var(--rule); color: var(--fg);
    font-size: .72rem; padding: 3px 8px; white-space: nowrap;
    opacity: 0; pointer-events: none; transition: opacity .12s; z-index: 2;
}
.bar:hover::after { opacity: 1; }

.ledger { list-style: none; padding: 0; margin: 0; }
.ledger li {
    display: flex; justify-content: space-between; gap: 16px;
    padding: 9px 0; border-bottom: 1px solid var(--rule);
    font-size: .88rem; margin: 0;
}
.ledger li::marker { content: none; }
.ledger span { color: var(--fg-dim); }
.ledger i { font-style: normal; color: var(--fg); font-variant-numeric: tabular-nums; white-space: nowrap; }

.matrix-wrap { overflow-x: auto; flex: 1; }
.matrix { width: 100%; border-collapse: collapse; font-size: .82rem; min-width: 620px; }
.matrix th, .matrix td {
    text-align: left; vertical-align: top;
    padding: 10px 12px; border-bottom: 1px solid var(--rule);
}
.matrix thead th {
    font-family: var(--cond); text-transform: uppercase; letter-spacing: .1em;
    font-size: .68rem; color: var(--fg-faint); font-weight: 600;
}
.matrix tbody th { color: var(--fg-dim); font-weight: 600; width: 16%; }
.matrix td.me { width: 42%; }
.matrix td { color: var(--fg-dim); }
.matrix .me { color: var(--fg); background: var(--acc-lo); border-left: 1px solid var(--acc); }
.matrix thead .me { color: var(--acc); }

.deck-nav {
    display: flex; align-items: center; justify-content: flex-end; gap: 14px;
    margin-top: 14px;
}
.deck-btn {
    background: none; color: var(--fg);
    border: 1px solid var(--rule); width: 42px; height: 34px;
    font: inherit; cursor: pointer;
    clip-path: polygon(0 6px, 6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
    transition: border-color .15s, color .15s;
}
.deck-btn:hover { border-color: var(--acc); color: var(--acc); }
.deck-btn:disabled { opacity: .3; cursor: default; border-color: var(--rule); color: var(--fg); }
.deck-count {
    font-family: var(--cond); letter-spacing: .12em; font-size: .78rem;
    color: var(--fg-faint); min-width: 3.4em; text-align: center;
    font-variant-numeric: tabular-nums;
}
.sources { font-size: .82rem; color: var(--fg-faint); }
.sources li { margin-bottom: .7em; }

@media (max-width: 860px) {
    .slide-grid.two, .slide-grid.three { grid-template-columns: 1fr; gap: 24px; }
    .slide-col.here { border-left: none; border-top: 1px solid var(--acc); padding: 20px 0 0; }
}
@media (max-width: 760px) {
    .deck { margin-left: 0; }
    .slide { padding: 26px 20px 24px; min-height: 0; }
    .bar { grid-template-columns: 7.6em 1fr; }
    .bar::after { left: 7.6em; }
}
@media (prefers-reduced-motion: reduce) { .deck-track { scroll-behavior: auto; } }

/* ── Language switcher ───────────────────────────────────────────────────
   <details> so it opens without script; script.js only closes it on an
   outside click. Flags are inline SVG (see FLAGS in build.py). */
.lang { position: relative; align-self: center; }
.lang summary {
    list-style: none; cursor: pointer;
    display: inline-flex; align-items: center; gap: 7px;
    font-size: .72rem; letter-spacing: .1em; color: var(--fg-dim);
    padding: 6px 9px; border: 1px solid var(--rule); border-radius: 3px;
    white-space: nowrap;
}
.lang summary::-webkit-details-marker { display: none; }
.lang summary::after { content: '▾'; font-size: .6rem; opacity: .7; }
.lang[open] summary, .lang summary:hover { color: var(--acc); border-color: var(--acc-dim); }
.flag { width: 21px; height: 14px; flex: none; display: block; outline: 1px solid #ffffff33; }
.lang-menu {
    position: absolute; right: 0; top: calc(100% + 8px); z-index: 30;
    min-width: 170px; padding: 6px 0;
    background: #0b0b0b; border: 1px solid var(--rule);
    clip-path: var(--clip-14);
    display: flex; flex-direction: column;
}
.nav .lang-menu a, .lang-menu a {
    display: flex; align-items: center; gap: 11px;
    padding: 9px 16px; border: none;
    text-transform: none; letter-spacing: .02em; font-size: .92rem;
    color: var(--fg-dim);
}
.lang-menu a:hover { color: var(--acc); background: #ffffff08; }
.lang-menu a[aria-current] { color: var(--fg); }
.lang-menu a[aria-current]::after { content: '•'; color: var(--acc); margin-left: auto; }
.head-m { display: none; align-items: center; gap: 10px; justify-self: end; }
.lang-m { display: none; }
@media (max-width: 760px) {
    .head-m { display: flex; }
    .lang-m { display: block; }
    .lang-m summary span { display: none; }   /* flag alone on phones */
}

/* ── Drifting equations ──────────────────────────────────────────────────
   Itô calculus in a soft teal, deliberately not the white/amber of the
   path canvas, and slower than it. Purely decorative: aria-hidden, no pointer
   events, and switched off for reduced motion. */
.eqs { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.eq-f {
    position: absolute; left: 0; top: var(--y);
    white-space: nowrap;
    font-family: 'STIX Two Text', 'Cambria Math', 'Latin Modern Math', 'Times New Roman', Georgia, serif;
    font-style: italic; font-weight: 400;
    font-size: clamp(1.05rem, 1.7vw, 1.55rem);
    color: #74D4C4; opacity: .27;
    text-shadow: 0 0 16px rgba(116,212,196,.35);
    animation: eqdrift var(--d) linear var(--delay) infinite;
    will-change: transform;
}
.eq-f.rev { animation-name: eqdrift-rev; }
.eq-f sub, .eq-f sup { font-size: .62em; }
@keyframes eqdrift {
    from { transform: translate(-45vw, 0)      rotate(var(--r)); }
    to   { transform: translate(110vw, -5vh)   rotate(var(--r)); }
}
@keyframes eqdrift-rev {
    from { transform: translate(110vw, 0)      rotate(var(--r)); }
    to   { transform: translate(-45vw, 4vh)    rotate(var(--r)); }
}
@media (max-width: 760px) {
    .eq-f { font-size: .95rem; opacity: .21; }
    .eq-f:nth-child(n+5) { display: none; }
}
@media (prefers-reduced-motion: reduce) { .eqs { display: none; } }

/* ── Slide deck, stage 2: its own panel, stands off the page ───────────── */
.deck {
    padding: 18px;
    background:
        radial-gradient(120% 90% at 100% 0%, rgba(226,163,60,.10), transparent 55%),
        linear-gradient(165deg, #17181d 0%, #0d0e11 70%);
    border: 1px solid rgba(226,163,60,.38);
    clip-path: var(--clip-24);
}
.slide {
    background: linear-gradient(180deg, #1b1c22 0%, #121317 100%);
    border: 1px solid rgba(255,255,255,.10);
    position: relative;
}
.slide::before {
    content: ''; position: absolute; left: 0; right: 0; top: 0; height: 2px;
    background: linear-gradient(90deg, var(--acc), rgba(226,163,60,0) 70%);
}
.slide-h { font-size: clamp(1.45rem, 2.9vw, 2.15rem); }
.slide-col > span { color: #ffffffd0; }
.slide-col.here {
    background: rgba(226,163,60,.07);
    border-left: 2px solid var(--acc);
    padding: 18px 22px;
}
.ledger li { border-bottom-color: rgba(255,255,255,.12); }
.matrix .me { background: rgba(226,163,60,.16); }
.deck-nav { justify-content: space-between; margin-top: 16px; }
.deck-dots { display: flex; gap: 8px; align-items: center; }
.deck-dot {
    width: 26px; height: 4px; padding: 0; border: none; cursor: pointer;
    background: rgba(255,255,255,.22); transition: background .2s, width .2s;
}
.deck-dot[aria-current="true"] { background: var(--acc); width: 42px; }
.deck-ctrl { display: flex; align-items: center; gap: 14px; }
.deck-progress { height: 2px; background: rgba(255,255,255,.08); margin-top: 12px; overflow: hidden; }
.deck-progress i { display: block; height: 100%; width: 0; background: var(--acc-dim); }
.deck-progress i.run { animation: deckfill var(--deck-t, 9s) linear forwards; }
.deck.paused .deck-progress i.run { animation-play-state: paused; }
@keyframes deckfill { to { width: 100%; } }
@media (max-width: 760px) {
    .deck { padding: 10px; }
    .deck-dot { width: 16px; }
    .deck-dot[aria-current="true"] { width: 28px; }
}
@media (prefers-reduced-motion: reduce) { .deck-progress { display: none; } }

.nav a { white-space: nowrap; }
.nav .cta { white-space: nowrap; }
/* Flag switcher + three right-hand links no longer fit beside the logo below
   ~1100px, so the compact Menu header takes over there. */
@media (max-width: 1240px) {
    header { grid-template-columns: 1fr auto; }
    .nav { display: none; }
    .menu-btn { display: block; }
    header .logo { text-align: left; }
    .head-m { display: flex; }
    .lang-m { display: block; }
}

/* Linked city chips: same chip as the spans, with a hint of the accent */
.geo a { color: var(--fg); border-color: var(--acc-lo); }

/* ── Quant question bank ─────────────────────────────────────────────────
   KaTeX output is pre-rendered by tools/qbank/render.mjs. */
[hidden] { display: none !important; }
.qmeta { margin-left: var(--indent); color: var(--fg-dim); font-size: .85rem; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.qbank { display: grid; gap: 14px; }
.qcard {
    margin-left: var(--indent); max-width: 880px;
    padding: 20px 24px 16px;
    background: linear-gradient(180deg, #16171c, #111216);
    border: 1px solid rgba(255,255,255,.09);
    clip-path: var(--clip-14);
}
.page-content .qcard p, .page-content .qcard ol { margin-left: 0; }
.qhead { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; }
.qnum {
    font-family: var(--cond); font-weight: 600; color: var(--acc);
    min-width: 30px; font-size: .95rem; letter-spacing: .05em;
}
.qdiff { font-size: .66rem; text-transform: uppercase; letter-spacing: .12em; padding: 3px 8px; border: 1px solid; }
.qdiff-E { color: #7fd6a6; border-color: #7fd6a655; }
.qdiff-M { color: #e9c46a; border-color: #e9c46a55; }
.qdiff-H { color: #f08a7a; border-color: #f08a7a55; }
/* Status badges. Sections ship in stages; say plainly which stage a thing is at
   rather than letting a visitor discover it half-built. */
.stat-badge {
    display: inline-block; vertical-align: 3px; margin-left: 10px;
    padding: 2px 8px 1px; font-size: .58rem; font-weight: 700;
    letter-spacing: .14em; text-transform: uppercase; white-space: nowrap;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%);
}
.stat-badge.early  { color: #0b0f2e; background: var(--acc); }
.stat-badge.dev    { color: #cfcfcf; background: #2a2a2a; border: 1px solid #3d3d3d; }
.stat-badge.soon   { color: #9ba8b6; background: transparent; border: 1px solid #39414a; }
h1 .stat-badge, h2 .stat-badge, h3 .stat-badge { vertical-align: middle; }
.qp-door .stat-badge { margin-left: 8px; }
@media (max-width: 560px) { .stat-badge { margin-left: 6px; font-size: .54rem; } }

.qfirms-lab {
    font-size: .56rem; letter-spacing: .12em; text-transform: uppercase;
    color: #6f6f6f; align-self: center; margin-right: 2px;
}
.qfirm.has-logo { display: inline-flex; align-items: center; padding: 2px 6px; }
/* The marks are wordmarks of differing widths, so fix the height and let width follow.
   They are supplied as black artwork; inverting puts them on the dark ground at one
   visual weight, so no brand shouts louder than another. */
.qfirm-logo {
    height: 13px; width: auto; max-width: 104px; display: block;
    filter: invert(1) grayscale(1); opacity: .72;
    transition: opacity .2s var(--ease);
}
.qfirm.has-logo:hover .qfirm-logo { opacity: 1; }
.qfirm.has-logo .qfirm-name {
    position: absolute; width: 1px; height: 1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap;   /* the mark already says the name */
}

.qfirms { display: flex; flex-wrap: wrap; gap: 5px; margin-left: auto; }
.qfirm {
    font-size: .68rem; letter-spacing: .03em; color: #cfd6e6;
    background: rgba(143,180,216,.10); border: 1px solid rgba(143,180,216,.22);
    padding: 2px 8px; border-radius: 999px; white-space: nowrap;
}
.qtext { font-size: 1.02rem; line-height: 1.6; }
.qopts { margin: 12px 0 4px 1.2em !important; list-style: upper-alpha; color: var(--fg-dim); font-size: .95rem; }
.qopts li { margin-bottom: .3em; }
.qreveal { margin-top: 12px; }
.qreveal summary {
    display: inline-block; cursor: pointer; list-style: none;
    font-size: .74rem; text-transform: uppercase; letter-spacing: .12em;
    padding: 7px 14px; border: 1px solid var(--acc-dim); color: var(--acc);
    border-radius: 3px; transition: background .15s;
}
.qreveal summary::-webkit-details-marker { display: none; }
.qreveal summary:hover { background: rgba(226,163,60,.10); }
.qreveal[open] summary { color: var(--fg-dim); border-color: var(--rule); }
.qans { margin-top: 12px; font-size: 1rem; }
.qsol { margin-top: 6px; color: #ffffffcc; font-size: .95rem; line-height: 1.6; border-left: 2px solid var(--acc-lo); padding-left: 14px; }
.katex { font-size: 1.06em; }
.qtext .katex-display, .qsol .katex-display { margin: .6em 0; overflow-x: auto; overflow-y: hidden; }
@media (max-width: 760px) {
    .qcard { margin-left: 0; padding: 16px 16px 12px; }
    .qfirms { margin-left: 0; width: 100%; }
    .qmeta { margin-left: 0; }
}

/* ── Timed quiz: its own indigo stage, deliberately not the black site ── */
.qz {
    --qz-bg1: #151a3d; --qz-bg2: #0c1030; --qz-ink: #eef1ff; --qz-dim: #b7bee6;
    --qz-line: rgba(183,190,230,.20); --qz-good: #5fd39a; --qz-bad: #ff7a70;
    margin-left: var(--indent); max-width: 920px;
    padding: 30px 32px 34px;
    color: var(--qz-ink);
    background:
        radial-gradient(90% 70% at 100% 0%, rgba(116,212,196,.16), transparent 60%),
        radial-gradient(70% 60% at 0% 100%, rgba(226,163,60,.12), transparent 60%),
        linear-gradient(160deg, var(--qz-bg1), var(--qz-bg2));
    border: 1px solid rgba(183,190,230,.28);
    clip-path: var(--clip-24);
    position: relative;
}
.page-content .qz p, .page-content .qz ol { margin-left: 0; }
.qz-k { font-family: var(--cond); text-transform: uppercase; letter-spacing: .16em; font-size: .75rem; color: #74D4C4; margin: 0 0 14px; }
.qz-banks { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.qz-bank {
    text-align: left; cursor: pointer; font: inherit; color: var(--qz-ink);
    background: rgba(255,255,255,.05); border: 1px solid var(--qz-line);
    padding: 16px 18px; display: flex; flex-direction: column; gap: 4px;
    clip-path: var(--clip-14); transition: transform .15s, border-color .15s, background .15s;
}
.qz-bank:hover { transform: translateY(-2px); border-color: #74D4C4; background: rgba(116,212,196,.10); }
.qz-bank b { font-size: 1.02rem; }
.qz-bank span { font-size: .8rem; color: var(--qz-dim); }
.qz-best { font-style: normal; font-size: .74rem; color: var(--acc); min-height: 1em; }
.qz-mixed { border-color: rgba(226,163,60,.45); }
.qz-note { font-size: .82rem; color: var(--qz-dim); margin-top: 16px; }
.qz-note code { background: rgba(255,255,255,.08); padding: 1px 5px; border-radius: 3px; }

.qz-top { display: flex; align-items: center; gap: 14px; font-size: .85rem; color: var(--qz-dim); }
.qz-streak { color: var(--acc); font-weight: 600; }
.qz-ring { width: 44px; height: 44px; margin-left: auto; transform: rotate(-90deg); }
.qz-ring circle { fill: none; stroke-width: 3.5; }
.qz-ring circle:first-child { stroke: rgba(255,255,255,.12); }
.qz-ring-fg { stroke: #74D4C4; stroke-linecap: round; transition: stroke .3s; }
.qz-hurry .qz-ring-fg { stroke: var(--qz-bad); }
.qz-time { min-width: 2.4em; font-variant-numeric: tabular-nums; font-weight: 600; color: var(--qz-ink); }
.qz-bar { height: 3px; background: rgba(255,255,255,.10); margin: 14px 0 22px; }
.qz-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #74D4C4, var(--acc)); transition: width .3s; }
.qz-q { font-size: 1.22rem; line-height: 1.6; min-height: 3.2em; }
.qz-form { margin-top: 20px; }
.qz-opts { display: grid; gap: 10px; }
.qz-opt {
    display: flex; align-items: center; gap: 14px; text-align: left; cursor: pointer;
    font: inherit; color: var(--qz-ink); padding: 12px 16px;
    background: rgba(255,255,255,.05); border: 1px solid var(--qz-line); border-radius: 4px;
    transition: border-color .15s, background .15s;
}
.qz-opt:hover:not(:disabled) { border-color: #74D4C4; background: rgba(116,212,196,.10); }
.qz-letter { font-family: var(--cond); font-weight: 600; color: #74D4C4; width: 1.2em; }
.qz-opt.ok { border-color: var(--qz-good); background: rgba(95,211,154,.14); }
.qz-opt.no { border-color: var(--qz-bad); background: rgba(255,122,112,.14); }
.qz-numrow { display: flex; gap: 10px; }
.qz-input {
    flex: 1; font: inherit; font-size: 1.15rem; color: var(--qz-ink);
    background: rgba(255,255,255,.07); border: 1px solid var(--qz-line); border-radius: 4px;
    padding: 12px 14px; outline: none;
}
.qz-input:focus { border-color: #74D4C4; box-shadow: 0 0 0 3px rgba(116,212,196,.18); }
.qz .cta { color: var(--qz-ink); }
.qz-flash { min-height: 1.6em; margin-top: 14px; font-weight: 600; letter-spacing: .02em; }
.qz-flash.ok { color: var(--qz-good); } .qz-flash.no { color: var(--qz-bad); } .qz-flash.warn { color: var(--acc); }

.qz-score { display: flex; align-items: baseline; gap: 10px; }
.qz-score b { font-size: 4rem; line-height: 1; font-weight: 700; }
.qz-score span { font-size: 1.4rem; color: var(--qz-dim); }
.qz-score em { font-style: normal; margin-left: 14px; font-size: 1.4rem; color: #74D4C4; }
.qz-stats { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 6px; }
.qz-stats span { font-size: .8rem; padding: 4px 10px; border: 1px solid var(--qz-line); border-radius: 999px; color: var(--qz-dim); }
.qz-stats .qz-pb { color: #0c1030; background: var(--acc); border-color: var(--acc); font-weight: 600; }
.qz-rh { margin: 28px 0 12px; font-size: 1rem; text-transform: uppercase; letter-spacing: .1em; }
.qz-review { list-style: none; padding: 0; display: grid; gap: 10px; }
.qz-review li { margin: 0; padding: 14px 16px; background: rgba(255,255,255,.04); border-left: 3px solid var(--qz-good); }
.qz-review li.no { border-left-color: var(--qz-bad); }
.qz-review li::marker { content: none; }
.qz-rq { font-size: .98rem; }
.qz-ra { display: flex; flex-wrap: wrap; gap: 6px 22px; margin-top: 8px; font-size: .86rem; color: var(--qz-dim); }
.qz-review details { margin-top: 8px; font-size: .9rem; }
.qz-review summary { cursor: pointer; color: #74D4C4; }
@media (max-width: 760px) {
    .qz { margin-left: 0; padding: 20px 16px 24px; }
    .qz-q { font-size: 1.08rem; }
    .qz-score b { font-size: 3rem; }
}

/* ─── Quant prep (/quant-prep, home band, nav) ─────────────────── */
.qp-hero, .qp-band, .qp-close {
    --qp-bg1: #171d47; --qp-bg2: #0b0f2e; --qp-ink: #eef1ff; --qp-dim: #b7bee6;
    --qp-line: rgba(183,190,230,.22); --qp-teal: #74D4C4;
}
.qp-hero {
    position: relative; margin-top: 3vh;
    display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center;
    padding: 56px 56px 60px;
    color: var(--qp-ink);
    background:
        radial-gradient(60% 80% at 100% 0%, rgba(116,212,196,.20), transparent 60%),
        radial-gradient(55% 70% at 0% 100%, rgba(226,163,60,.16), transparent 62%),
        linear-gradient(155deg, var(--qp-bg1), var(--qp-bg2));
    border: 1px solid rgba(183,190,230,.28);
    clip-path: var(--clip-24);
    overflow: hidden;
}
.qp-hero::before {   /* faint grid, like graph paper */
    content: ""; position: absolute; inset: 0; pointer-events: none;
    background-image: linear-gradient(rgba(183,190,230,.06) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(183,190,230,.06) 1px, transparent 1px);
    background-size: 36px 36px;
    mask-image: linear-gradient(90deg, #000 0%, transparent 75%);
}
.qp-hero > * { position: relative; }
.page-content .qp-hero p, .page-content .qp-band p, .page-content .qp-close p { margin-left: 0; }
.qp-eyebrow { font-family: var(--cond); text-transform: uppercase; letter-spacing: .18em; font-size: .78rem; color: var(--qp-teal); margin: 0 0 18px; }
.qp-h1 { font-size: clamp(2.6rem, 5.4vw, 4.6rem); line-height: .95; margin: 0 0 22px; text-transform: uppercase; font-weight: 700; color: #fff; }
.qp-sub { font-size: 1.12rem; line-height: 1.6; color: var(--qp-dim); max-width: 34em; margin: 0 0 30px; }
.qp-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }
.qp-btn {
    display: inline-block; border: 1px solid var(--acc); background: var(--acc); color: #111 !important;
    font-family: var(--font); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 700;
    padding: 15px 24px; clip-path: var(--clip-14); border-bottom: 1px solid var(--acc);
    transition: transform .15s, background .15s;
}
.qp-btn:hover { transform: translateY(-2px); background: #f0b654; }
.qp-btn.ghost { background: transparent; color: var(--qp-ink) !important; border-color: rgba(238,241,255,.45); }
.qp-btn.ghost:hover { border-color: var(--qp-teal); background: rgba(116,212,196,.10); }
.qp-stats { display: grid; grid-template-columns: repeat(3, auto); justify-content: start; gap: 34px; margin: 38px 0 0; padding-top: 24px; border-top: 1px solid var(--qp-line); }
.qp-stats div { margin: 0; }
.qp-stats dt { font-size: 2.1rem; font-weight: 700; color: #fff; line-height: 1; }
.qp-stats dd { margin: 6px 0 0; font-size: .78rem; color: var(--qp-dim); text-transform: uppercase; letter-spacing: .1em; }

/* Interactive sample question */
.qp-demo {
    background: rgba(9,12,36,.72); border: 1px solid rgba(116,212,196,.35);
    padding: 24px 26px 20px; clip-path: var(--clip-24);
    box-shadow: 0 30px 80px rgba(0,0,0,.45);
    transform: rotate(-1.2deg);
    transition: transform .4s cubic-bezier(.19,1,.22,1);
}
.qp-demo:hover, .qp-demo.done { transform: none; }
.qp-demo-top { display: flex; align-items: center; gap: 12px; font-size: .78rem; color: var(--qp-dim); }
.qp-demo-count { flex: 1; }
.qp-demo-streak { color: var(--acc); font-weight: 700; }
.qp-ring { width: 34px; height: 34px; transform: rotate(-90deg); }
.qp-ring circle { fill: none; stroke: var(--qp-line); stroke-width: 4; }
.qp-ring .qp-ring-fg { stroke: var(--qp-teal); stroke-dasharray: 119.4; stroke-dashoffset: 0; animation: qp-count 75s linear infinite; }
.qp-demo.done .qp-ring-fg { animation-play-state: paused; }
@keyframes qp-count { to { stroke-dashoffset: 119.4; } }
.qp-demo-bar { height: 3px; background: var(--qp-line); margin: 14px 0 18px; }
.qp-demo-bar i { display: block; height: 100%; width: 20%; background: linear-gradient(90deg, var(--qp-teal), var(--acc)); }
.qp-demo-q { font-size: 1.15rem; color: #fff; margin-bottom: 16px; }
.qp-demo-opts { display: grid; gap: 8px; }
.qp-demo-opts button {
    display: flex; align-items: center; gap: 14px; text-align: left; cursor: pointer;
    font: inherit; color: var(--qp-ink); padding: 11px 14px;
    background: rgba(255,255,255,.05); border: 1px solid var(--qp-line);
    transition: border-color .15s, background .15s;
}
.qp-demo-opts button:hover:not(:disabled) { border-color: var(--qp-teal); background: rgba(116,212,196,.08); }
.qp-demo-opts .qp-l { font-family: var(--cond); font-weight: 700; color: var(--qp-teal); width: 1em; }
.qp-demo-opts button.ok { border-color: #5fd39a; background: rgba(95,211,154,.14); }
.qp-demo-opts button.no { border-color: #ff7a70; background: rgba(255,122,112,.12); }
.qp-demo-opts button:disabled { cursor: default; }
.qp-demo-sol { margin-top: 14px; font-size: .92rem; line-height: 1.55; color: var(--qp-dim); border-left: 2px solid var(--qp-teal); padding-left: 12px; }
.qp-demo-sol b { color: #fff; }
.qp-demo-hint { margin: 14px 0 0; font-size: .78rem; color: var(--qp-dim); opacity: .8; }

/* Topic tiles */
.qp-tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 26px; }
.qp-tile {
    display: flex; flex-direction: column; color: #eef1ff;
    background: linear-gradient(165deg, #161b42, #0d1133);
    border: 1px solid rgba(183,190,230,.20); clip-path: var(--clip-24);
    transition: transform .2s, border-color .2s, box-shadow .2s;
}
.qp-tile:hover { transform: translateY(-4px); border-color: rgba(116,212,196,.6); box-shadow: 0 18px 40px rgba(0,0,0,.4); }
.qp-tile-main { display: flex; flex-direction: column; gap: 10px; padding: 26px 26px 18px; border-bottom: none; color: inherit; flex: 1; }
.qp-glyph { width: 52px; height: 52px; fill: none; stroke: #74D4C4; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 6px; }
.qp-glyph .f { fill: #74D4C4; stroke: none; }
.qp-glyph .acc { stroke: var(--acc); }
.qp-glyph rect.acc { fill: rgba(226,163,60,.25); }
.qp-glyph rect:not(.acc):not([rx]) { fill: rgba(116,212,196,.18); }
.qp-glyph .dim { stroke: rgba(183,190,230,.35); }
.qp-tile h3 { font-size: 1.25rem; margin: 0; color: #fff; text-transform: none; letter-spacing: 0; }
.qp-tile p { font-size: .93rem; line-height: 1.5; color: #b7bee6; margin: 0; }
.page-content .qp-tile p { margin-left: 0; max-width: none; }
.qp-diff { display: flex; height: 5px; margin-top: 8px; background: rgba(255,255,255,.06); }
.qp-diff i { display: block; height: 100%; }
.qp-diff .e { background: #74D4C4; } .qp-diff .m { background: var(--acc); } .qp-diff .h { background: #ff7a70; }
.qp-diff-k { font-size: .75rem; color: #b7bee6; }
.qp-firms { font-size: .75rem; color: rgba(238,241,255,.55); letter-spacing: .02em; }
.qp-tile-go { display: flex; border-top: 1px solid rgba(183,190,230,.18); }
.qp-tile-go a { flex: 1; padding: 14px 18px; font-size: .78rem; text-transform: uppercase; letter-spacing: .1em; color: #eef1ff; border-bottom: none; }
.qp-tile-go a:hover { background: rgba(116,212,196,.10); color: #fff; }
.qp-tile-go .qp-timed { border-left: 1px solid rgba(183,190,230,.18); color: #74D4C4; text-align: right; }
.qp-mixed {
    display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 16px;
    padding: 20px 26px; color: #eef1ff; border: 1px solid rgba(226,163,60,.5); border-bottom: 1px solid rgba(226,163,60,.5);
    background: linear-gradient(90deg, rgba(226,163,60,.14), rgba(116,212,196,.06)); clip-path: var(--clip-14);
}
.qp-mixed b { color: var(--acc); margin-right: 10px; text-transform: uppercase; letter-spacing: .1em; font-size: .85rem; }
.qp-mixed:hover { background: linear-gradient(90deg, rgba(226,163,60,.24), rgba(116,212,196,.1)); }
.qp-mixed-go { font-weight: 700; color: var(--acc); white-space: nowrap; }

/* Steps */
.qp-steps { list-style: none; counter-reset: s; padding: 0; margin: 26px 0 0 var(--indent); display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; max-width: 1000px; }
.qp-steps li { counter-increment: s; display: flex; flex-direction: column; gap: 8px; border-top: 1px solid var(--rule); padding-top: 18px; }
.qp-steps li::before { content: "0" counter(s); font-family: var(--cond); font-size: 2.4rem; font-weight: 700; color: var(--acc); line-height: 1; }
.qp-steps b { font-size: 1.05rem; color: var(--fg); }
.qp-steps span { font-size: .93rem; color: var(--fg-dim); line-height: 1.55; }

/* Closing band */
.qp-close {
    display: grid; grid-template-columns: 1.4fr auto; gap: 40px; align-items: center;
    padding: 40px 44px; margin-top: 30px; color: var(--qp-ink);
    background: linear-gradient(155deg, var(--qp-bg1), var(--qp-bg2)); border: 1px solid rgba(183,190,230,.25); clip-path: var(--clip-24);
}
.qp-close h2 { margin: 0 0 10px; color: #fff; }
.qp-close p { color: var(--qp-dim); margin: 0; max-width: 38em; line-height: 1.6; }

/* Home / quant-page band */
.qp-band {
    display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center;
    padding: 44px 48px; color: var(--qp-ink);
    background:
        radial-gradient(60% 90% at 100% 0%, rgba(116,212,196,.18), transparent 60%),
        linear-gradient(155deg, var(--qp-bg1), var(--qp-bg2));
    border: 1px solid rgba(183,190,230,.28); clip-path: var(--clip-24);
}
.qp-band h2 { margin: 0 0 14px; color: #fff; }
.qp-band .qp-sub { font-size: 1.02rem; margin-bottom: 24px; }
.qp-band-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.qp-band-grid a {
    display: flex; flex-direction: column; align-items: flex-start; gap: 8px; padding: 16px 14px;
    background: rgba(255,255,255,.04); border: 1px solid var(--qp-line); border-bottom: 1px solid var(--qp-line);
    color: var(--qp-ink); font-size: .82rem; clip-path: var(--clip-14); transition: border-color .15s, background .15s, transform .15s;
}
.qp-band-grid a:hover { border-color: var(--qp-teal); background: rgba(116,212,196,.10); transform: translateY(-2px); }
.qp-band-grid .qp-glyph { width: 34px; height: 34px; margin: 0; }
.qp-band-grid span { color: var(--qp-dim); font-size: .72rem; }

/* Nav: the Quant prep link carries a small "free" tag */
.nav a.nav-hot { color: var(--fg); }
.nav a.nav-hot::after {
    content: attr(data-tag); margin-left: 6px; padding: 1px 5px 0; font-size: .6rem; letter-spacing: .1em;
    color: #0b0f2e; background: #74D4C4; vertical-align: 2px;
}

@media (max-width: 1000px) {
    .qp-hero, .qp-band { grid-template-columns: 1fr; padding: 40px 32px; gap: 36px; }
    .qp-tiles { grid-template-columns: repeat(2, 1fr); }
    .qp-close { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    .qp-hero, .qp-band, .qp-close { padding: 30px 20px; }
    .qp-stats { grid-template-columns: repeat(2, auto); gap: 20px 34px; }
    .qp-tiles, .qp-steps { grid-template-columns: 1fr; }
    .qp-steps { margin-left: 0; }
    .qp-demo { transform: none; padding: 20px 18px; }
    .qp-mixed { flex-direction: column; align-items: flex-start; }
    .qp-band-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Practice banks: figures, tables, GRE comparison, GMAT data sufficiency ─── */
.qstem { margin: 0; }
.qfig { margin: 2px 0 16px; padding: 14px 16px 10px; background: rgba(255,255,255,.025); border: 1px solid rgba(255,255,255,.09); }
.qfig figcaption { font-size: .82rem; letter-spacing: .02em; color: #c9cfe3; margin: 0 0 8px; font-weight: 700; }
.qchart { display: block; width: 100%; height: auto; max-width: 640px; }
.qchart text { font-family: var(--font); font-size: 12px; fill: #a9b0c9; }
.qchart .cl { font-size: 11.5px; letter-spacing: .04em; }
.qchart .cv { fill: #eef1ff; font-size: 11px; font-weight: 700; }
.qchart .cs { font-size: 10px; font-weight: 400; fill: #c9cfe3; }
.qchart .cd { fill: #0b0f2e; font-size: 12px; }
.qchart .cb { fill: #e6e9f5; font-size: 13px; }
.qchart .cg { stroke: rgba(255,255,255,.07); }
.qchart .ca { stroke: rgba(255,255,255,.32); }
.qchart polyline { fill: none; stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.qchart .c0 { fill: #74D4C4; } .qchart .c1 { fill: #E2A33C; } .qchart .c2 { fill: #ff8a7a; }
.qchart .c3 { fill: #a99cff; } .qchart .c4 { fill: #6fb3ff; } .qchart .c5 { fill: #e6d27a; }
.qchart .k0 { stroke: #74D4C4; } .qchart .k1 { stroke: #E2A33C; } .qchart .k2 { stroke: #ff8a7a; }
.qtable-wrap { overflow-x: auto; }
.qtable { border-collapse: collapse; width: 100%; font-size: .9rem; font-variant-numeric: tabular-nums; }
.qtable th, .qtable td { padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,.08); text-align: right; white-space: nowrap; }
.qtable th { color: var(--acc); font-weight: 700; font-size: .8rem; letter-spacing: .02em; }
.qtable th:first-child, .qtable td:first-child { text-align: left; }
.qtable tbody tr:hover { background: rgba(255,255,255,.03); }
.qcmp { margin: 14px 0 6px; }
.qc-given { text-align: center; font-style: italic; color: #c9cfe3; margin: 0 0 10px !important; max-width: none !important; }
.qc-grid { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid rgba(255,255,255,.14); }
.qc-grid > div { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 14px 12px 16px; text-align: center; }
.qc-grid > div + div { border-left: 1px solid rgba(255,255,255,.14); }
.qc-grid > div > span { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--acc); }
.qc-grid b { font-weight: 400; font-size: 1.05rem; }
.qds { list-style: none; padding: 0; margin: 12px 0 4px !important; display: grid; gap: 6px; }
.qds li { display: flex; gap: 12px; padding: 8px 12px; background: rgba(255,255,255,.03); border-left: 2px solid var(--acc); }
.qds .qds-n { color: var(--acc); font-weight: 700; flex: none; }
.qds .qds-t { flex: 1; }
.qlvl { font-size: .72rem; letter-spacing: .03em; padding: 2px 9px; border-radius: 999px; color: #9fe3d7; border: 1px solid rgba(116,212,196,.4); background: rgba(116,212,196,.08); white-space: nowrap; }
.qlvl-p { margin-left: auto; }
.qp-scale { margin: 18px 0 0 var(--indent); max-width: 720px; height: 34px; position: relative;
    background: linear-gradient(90deg, #74D4C4, #E2A33C 70%, #ff7a70); clip-path: var(--clip-14); }
.qp-scale span { position: absolute; left: calc((var(--p) - 50) * 2%); top: 50%; transform: translate(-50%, -50%); font-size: .74rem; font-weight: 700; color: #0b0f2e; }
.qp-scale span:first-child { transform: translate(0, -50%); }
.qp-scale span:last-child { transform: translate(-100%, -50%); }
.qp-band + .qp-band { margin-top: 18px; }
.qp-stack { display: grid; gap: 0; }
.qp-band-all .qp-band-grid { grid-template-columns: repeat(2, 1fr); }
.qz-otext { flex: 1; }
.qz-rl { display: inline-block; margin-bottom: 6px; font-size: .72rem; color: #9fe3d7; }
.qz-next { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; margin: 22px 0 6px; padding: 16px 20px;
    border: 1px solid rgba(226,163,60,.45); background: rgba(226,163,60,.08); clip-path: var(--clip-14); }
.qz-next p { margin: 0 !important; flex: 1; min-width: 220px; color: var(--qz-ink); }
.qz .qfig { background: rgba(0,0,0,.18); }
@media (max-width: 760px) {
    .qc-grid { grid-template-columns: 1fr; }
    .qc-grid > div + div { border-left: none; border-top: 1px solid rgba(255,255,255,.14); }
    .qp-scale { margin-left: 0; }
    .qlvl-p { margin-left: 0; }
}

/* ─── Exit prompt ────────────────────────────────────────────────── */
.xi { position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center; padding: 16px;
    background: rgba(3,4,12,.62); backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px);
    opacity: 0; transition: opacity .25s ease; }
.xi.on { opacity: 1; }
.xi-card { position: relative; width: min(540px, 100%); padding: 38px 38px 30px; color: #eef1ff;
    background:
        radial-gradient(70% 80% at 100% 0%, rgba(116,212,196,.20), transparent 60%),
        radial-gradient(60% 70% at 0% 100%, rgba(226,163,60,.16), transparent 62%),
        linear-gradient(155deg, #171d47, #0b0f2e);
    border: 1px solid rgba(183,190,230,.3); clip-path: var(--clip-24);
    box-shadow: 0 40px 100px rgba(0,0,0,.6);
    transform: translateY(12px) scale(.98); transition: transform .35s cubic-bezier(.19,1,.22,1); }
.xi.on .xi-card { transform: none; }
.xi-k { font-family: var(--cond); text-transform: uppercase; letter-spacing: .18em; font-size: .74rem; color: #74D4C4; margin: 0 0 12px; }
.xi-card h2 { margin: 0 0 12px; color: #fff; font-size: clamp(1.5rem, 3.6vw, 2rem); line-height: 1.1; }
.xi-card p.xi-p { color: #b7bee6; line-height: 1.6; margin: 0 0 24px; }
.xi-cta { display: flex; flex-wrap: wrap; gap: 10px; }
.xi-x { position: absolute; top: 10px; right: 12px; width: 36px; height: 36px; background: none; border: none; color: #b7bee6; font-size: 1.5rem; cursor: pointer; line-height: 1; }
.xi-x:hover { color: #fff; }
.xi-no { display: inline-block; margin-top: 18px; background: none; border: none; padding: 0; font: inherit; font-size: .82rem; color: #8d94bd; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.xi-no:hover { color: #eef1ff; }
@media (prefers-reduced-motion: reduce) { .xi, .xi-card { transition: none; } }
@media (max-width: 760px) { .xi-card { padding: 32px 22px 24px; } }
.qbank > .qcard { min-width: 0; }   /* grid items must be allowed to shrink below a wide table */

/* ═══ Exam window (quiz.js): white test screen modelled on real test interfaces ═══ */
html.xm-lock, html.xm-lock body { overflow: hidden; }
.xm {
    position: fixed; inset: 0; z-index: 960; display: flex; flex-direction: column;
    background: #fff; color: #1b1b1b; font: 16px/1.6 Arial, Helvetica, sans-serif; letter-spacing: 0;
    --xm-bar: #0c2b4b; --xm-bar-ink: #fff; --xm-accent: #0f5ea8;
}
.xm * { box-sizing: border-box; }
.xm button { font: inherit; cursor: pointer; }
.xm button:disabled { opacity: .45; cursor: default; }
.xm .katex { font-size: 1.07em; color: inherit; }
.xm-top { flex: none; display: flex; align-items: center; gap: 16px; min-height: 54px; padding: 8px 20px; background: var(--xm-bar); color: var(--xm-bar-ink); }
.xm-title { flex: 1; min-width: 0; font-size: 15px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.xm-title span { font-weight: 400; opacity: .8; }
.xm-tools { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; justify-content: flex-end; }
.xm-count { font-size: 14px; white-space: pre; }
.xm-body { flex: 1; overflow: auto; background: #fff; }
.xm-page { max-width: 860px; margin: 0 auto; padding: 34px 28px 60px; }
.xm-foot { flex: none; display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 20px; }
.xm-foot-l, .xm-foot-r { display: flex; gap: 10px; flex-wrap: wrap; }
.xm-dir { font-size: 14px; color: #3b3b3b; margin: 0 0 18px; padding-bottom: 12px; border-bottom: 1px solid #dcdcdc; }
.xm-q { font-size: 16.5px; }
.xm-q p { margin: 0 0 12px; }
.xm-h { font: 700 22px/1.3 Arial, Helvetica, sans-serif; margin: 0 0 12px; color: #1b1b1b; text-transform: none; letter-spacing: 0; }
.xm-edits { margin-top: 18px; font-size: 14px; color: #8a4b00; }

/* answer choices */
.xm-opts { display: grid; gap: 6px; margin: 22px 0 0; }
.xm-opt { display: flex; align-items: center; gap: 14px; padding: 9px 12px; border-radius: 3px; cursor: pointer; border: 1px solid transparent; }
.xm-opt:hover { background: #f2f5f9; }
.xm-opt.on { background: #e8f0fa; border-color: #b9cfe8; }
.xm-opt.off { cursor: not-allowed; opacity: .65; }
.xm-opt input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.xm-dot { flex: none; width: 20px; height: 20px; border-radius: 50%; border: 1.5px solid #4a4a4a; background: #fff; position: relative; }
.xm-opt.on .xm-dot::after { content: ""; position: absolute; inset: 4px; border-radius: 50%; background: #1b1b1b; }
.xm-opt input:focus-visible + .xm-dot { outline: 2px solid var(--xm-accent); outline-offset: 2px; }
/* Select one or more: square boxes, as on the GRE, so the format is visible before the directions are read. */
.xm-opts.xm-ms .xm-dot { border-radius: 2px; }
.xm-opts.xm-ms .xm-opt.on .xm-dot::after { content: "✓"; inset: 0; border-radius: 0; background: none; color: #1b1b1b; font-size: 15px; font-weight: 700; line-height: 18px; text-align: center; }
.qms { margin: 10px 0 0; font-size: .82rem; font-style: italic; color: var(--fg-dim); }
.xm-let { flex: none; font-weight: 700; width: 1.2em; color: #333; }

/* Option elimination — the strike-out the official GMAT and GRE software provide.
   The row wraps the label so the cross sits outside the clickable answer. */
/* ── Course syllabus ────────────────────────────────────────────────
   One view of the whole course. Modules are numbered so the order reads as
   deliberate; every row is a link, because a syllabus nobody can click is a
   picture of a course rather than a course. */
/* Available to screen readers and to the document outline, invisible on screen.
   Used where a section needs a heading for structure but the design already
   carries the label some other way. */
.h-quiet { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.cx-lede { margin-left: var(--indent); max-width: var(--measure); color: var(--fg-dim); }
.cx-syl { list-style: none; margin: 30px 0 0 var(--indent); padding: 0; max-width: var(--measure); }
.cx-syl-mod { margin-bottom: 26px; border: 1px solid var(--rule); clip-path: var(--clip-24); background: #ffffff04; }
.cx-syl-head { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: start; padding: 20px 22px 16px; border-bottom: 1px solid var(--rule); }
.cx-syl-num { font-size: .72rem; font-weight: 700; letter-spacing: .14em; color: var(--acc); padding-top: 4px; }
.cx-syl-head h3 { margin: 0 0 6px; font-size: 1.02rem; }
.cx-syl-head h3 a { color: var(--fg); text-decoration: none; }
.cx-syl-head h3 a:hover { color: var(--acc); }
.cx-syl-head p { margin: 0; font-size: .86rem; color: var(--fg-dim); }
.cx-syl-mins { font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: #6f6f6f; white-space: nowrap; padding-top: 5px; }
.cx-syl-items { list-style: none; margin: 0; padding: 6px 0; }
.cx-syl-item a { display: grid; grid-template-columns: 74px 1fr auto auto; gap: 12px; align-items: center;
    padding: 9px 22px; text-decoration: none; color: var(--fg); transition: background .15s; }
.cx-syl-item a:hover { background: #ffffff08; }
.cx-syl-kind { font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; color: #6f6f6f; }
.cx-is-problem .cx-syl-kind { color: var(--acc); }
.cx-syl-title { font-size: .9rem; }
.cx-syl-item a:hover .cx-syl-title { color: var(--acc); }
.cx-syl-diff { font-size: .6rem; letter-spacing: .08em; text-transform: uppercase; padding: 1px 7px; border: 1px solid var(--rule); border-radius: 2px; color: #9a9a9a; }
.cx-d-E { color: #8fbf9a; border-color: #2f4a35; }
.cx-d-M { color: #d9ae62; border-color: #4a3c22; }
.cx-d-H { color: #d18a80; border-color: #4a2c28; }
.cx-syl-time { font-size: .68rem; color: #6f6f6f; white-space: nowrap; font-variant-numeric: tabular-nums; }
@media (max-width: 760px) {
    .cx-syl, .cx-lede { margin-left: 0; }
    .cx-syl-item a { grid-template-columns: 1fr auto; gap: 4px 10px; padding: 10px 16px; }
    .cx-syl-kind { grid-column: 1 / -1; }
    .cx-syl-head { padding: 16px; gap: 10px; }
}

.xm-orow { display: flex; align-items: center; gap: 6px; }
.xm-orow .xm-opt { flex: 1 1 auto; }
.xm-strike {
    flex: none; width: 26px; height: 26px; line-height: 1; border-radius: 3px;
    border: 1px solid transparent; background: none; color: #97a3b4;
    font-size: .8rem; cursor: pointer; opacity: 0;
    transition: opacity .15s, color .15s, border-color .15s;
}
.xm-orow:hover .xm-strike, .xm-strike:focus-visible { opacity: 1; }
.xm-strike:hover { color: #1b1b1b; border-color: #b9cfe8; }
.xm-orow.struck .xm-strike { opacity: 1; color: #6c7a8a; }
.xm-orow.struck .xm-opt { opacity: .45; }
.xm-orow.struck .xm-otext { text-decoration: line-through; text-decoration-thickness: 1px; }
.xm-orow.struck .xm-let { text-decoration: line-through; }

/* The exam's key legend — quiet, under the answers, out of the way of the question. */
.xm-keys {
    margin-top: 40px;
    display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
    font-size: .66rem; letter-spacing: .06em; text-transform: uppercase; color: #9aa7b6;
}
.xm-keys b { font-weight: 700; color: #7b8896; letter-spacing: .12em; }
.xm-keys kbd {
    font: inherit; text-transform: none; padding: 1px 5px; border-radius: 3px;
    border: 1px solid #ccd5df; background: #fff; color: #44505e;
}
@media (max-width: 860px) { .xm-keys { display: none; } }

/* Pacing against the exam's own per-question budget, shown in the review. */
.qz-pace { font-variant-numeric: tabular-nums; }
.qz-pace.slow { color: var(--acc); }
.qz-pace.fast { color: #7ea88f; }

.xm-otext { flex: 1; }
.xm-numwrap { margin-top: 22px; }
.xm-num { width: 200px; height: 42px; padding: 0 12px; border: 1px solid #5a5a5a; border-radius: 2px; font: 17px Arial, Helvetica, sans-serif; color: #111; background: #fff; }
.xm-num:focus { outline: 2px solid var(--xm-accent); outline-offset: 1px; }

/* stimulus: GMAT split screen, stacked elsewhere */
.xm-page.xm-split { max-width: none; height: 100%; padding: 0; display: grid; grid-template-columns: 1fr 1fr; }
.xm-stim, .xm-qpane { overflow: auto; padding: 28px 28px 50px; }
.xm-stim { border-right: 3px solid #cfd6de; background: #fbfbfc; }
.xm-stim-top { margin-bottom: 18px; }

/* charts, tables, comparison and sufficiency layouts on the white screen */
.xm .qfig { background: #fff; border: 1px solid #cfcfcf; padding: 14px 16px 10px; margin: 0 0 12px; }
.xm .qfig figcaption { color: #111; font: 700 14px Arial, Helvetica, sans-serif; letter-spacing: 0; }
.xm .qchart text { fill: #333; font-family: Arial, Helvetica, sans-serif; }
.xm .qchart .cv { fill: #111; }
.xm .qchart .cs { fill: #333; }
.xm .qchart .cb { fill: #111; }
.xm .qchart .cd { fill: #fff; }
.xm .qchart .cg { stroke: #e7e7e7; }
.xm .qchart .ca { stroke: #6b6b6b; }
.xm .qchart .c0 { fill: #2f6db5; } .xm .qchart .c1 { fill: #e39b2d; } .xm .qchart .c2 { fill: #c2453c; }
.xm .qchart .c3 { fill: #7a5cc4; } .xm .qchart .c4 { fill: #3a9d9d; } .xm .qchart .c5 { fill: #9aa23b; }
.xm .qchart .k0 { stroke: #2f6db5; } .xm .qchart .k1 { stroke: #e39b2d; } .xm .qchart .k2 { stroke: #c2453c; }
.xm .qtable { color: #111; font-family: Arial, Helvetica, sans-serif; }
.xm .qtable th { color: #111; background: #eef1f5; border-bottom: 1px solid #b9c2cc; }
.xm .qtable td { border-bottom: 1px solid #e1e1e1; }
.xm .qtable tbody tr:hover { background: #f7f9fb; }
.xm .qc-given { color: #111; font-style: normal; }
.xm .qc-grid { border: 1px solid #8c8c8c; }
.xm .qc-grid > div + div { border-left: 1px solid #8c8c8c; }
.xm .qc-grid > div > span { color: #111; font: 700 15px Arial, Helvetica, sans-serif; letter-spacing: 0; text-transform: none; }
.xm .qc-grid b { font-weight: 400; font-size: 17px; }
.xm .qds li { background: none; border-left: none; padding: 5px 0; }
.xm .qds .qds-n { color: #111; }

/* review and navigator */
.xm-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; margin-top: 8px; }
.xm-cell { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 12px 6px; background: #fff; border: 1px solid #b7c1cc; border-radius: 3px; color: #1b1b1b; }
.xm-cell b { font-size: 18px; }
.xm-cell span { font-size: 11.5px; color: #555; }
.xm-cell:hover { border-color: var(--xm-accent); background: #f2f7fd; }
.xm-cell.mk { background: #fff6dd; border-color: #d9a520; }
.xm-cell.ch { background: #e8f3ea; border-color: #5a9a66; }
.xm-rev { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 6px; }
.xm-rev th { text-align: left; background: #e6e9ed; padding: 8px 12px; border: 1px solid #c9ced4; }
.xm-rev td { padding: 7px 12px; border: 1px solid #dcdfe3; cursor: pointer; }
.xm-rev tr.na td:nth-child(2) { color: #a13c2f; }
.xm-rev tbody tr:hover td { background: #f3f6f9; }
.xm-rev tr.sel td { background: #cfe0f4 !important; }
.xm-rev-go { margin-top: 16px; }

/* modal, toast */
.xm-modal { position: fixed; inset: 0; z-index: 5; display: grid; place-items: center; background: rgba(0,0,0,.35); padding: 16px; }
.xm-modal[hidden] { display: none; }
.xm-modal-box { width: min(460px, 100%); background: #fff; border: 1px solid #8a8a8a; box-shadow: 0 16px 40px rgba(0,0,0,.3); }
.xm-modal-h { padding: 10px 16px; background: var(--xm-bar); color: var(--xm-bar-ink); font-weight: 700; }
.xm-modal-t { padding: 18px 16px 8px; font-size: 15px; }
.xm-modal-b { display: flex; justify-content: flex-end; gap: 10px; padding: 12px 16px 16px; }
.xm-mb { padding: 8px 18px; background: #f3f3f3; border: 1px solid #8a8a8a; border-radius: 3px; color: #1b1b1b; }
.xm-mb.p { background: var(--xm-accent); border-color: var(--xm-accent); color: #fff; font-weight: 700; }
.xm-toast { position: fixed; top: 70px; left: 50%; transform: translateX(-50%); z-index: 6; padding: 10px 18px; background: #fff4d6; border: 1px solid #d9a520; color: #5a3d00; font-size: 14px; font-weight: 700; box-shadow: 0 6px 18px rgba(0,0,0,.15); }
.xm-toast[hidden] { display: none; }

/* calculator */
.xm-calc { position: fixed; top: 72px; right: 24px; z-index: 4; width: 250px; background: #e4e6e9; border: 1px solid #7d848c; box-shadow: 0 10px 30px rgba(0,0,0,.25); padding-bottom: 10px; }
.xm-calc[hidden] { display: none; }
.xm-calc-h { display: flex; justify-content: space-between; align-items: center; padding: 6px 10px; background: #4b5561; color: #fff; font-size: 13px; font-weight: 700; cursor: move; user-select: none; }
.xm-calc-h button { background: none; border: none; color: #fff; font-size: 18px; line-height: 1; }
.xm-calc-d { display: block; width: calc(100% - 20px); margin: 10px; height: 38px; text-align: right; padding: 0 10px; font: 20px Arial, Helvetica, sans-serif; border: 1px solid #8a9199; background: #fff; color: #111; }
.xm-calc-k { display: grid; grid-template-columns: repeat(5, 1fr); gap: 5px; padding: 0 10px; }
.xm-calc-k button { height: 34px; background: linear-gradient(#fdfdfd, #e2e4e7); border: 1px solid #9aa1a9; border-radius: 3px; color: #1b1b1b; font-size: 14px; }
.xm-calc-k button:active { background: #d0d4d8; }
.xm-calc-t { display: block; width: calc(100% - 20px); margin: 8px 10px 0; height: 32px; background: linear-gradient(#fdfdfd, #e2e4e7); border: 1px solid #9aa1a9; border-radius: 3px; font-size: 13px; }

/* ── GMAT Focus look ── */
.xm-gmat, .xm-ea { --xm-bar: #0e2d4f; --xm-accent: #1565c0; }
.xm-gmat .xm-foot, .xm-ea .xm-foot { background: #0e2d4f; }
.xm-b, .xm-time-btn { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; background: transparent; border: 1px solid rgba(255,255,255,.55); border-radius: 3px; color: #fff; font-size: 13px; }
.xm-b svg, .xm-time-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.xm-time-btn { border-color: transparent; font-size: 15px; font-variant-numeric: tabular-nums; min-width: 96px; }
.xm-b.on { background: #ffd24d; border-color: #ffd24d; color: #1b1b1b; }
.xm-b.on svg { fill: #1b1b1b; stroke: #1b1b1b; }
.xm-n { padding: 9px 28px; background: #fff; color: #0e2d4f; border: none; border-radius: 3px; font-weight: 700; font-size: 15px; }
.xm-n:hover { background: #e8eef6; }
.xm-gmat.xm-low .xm-time-btn, .xm-ea.xm-low .xm-time-btn { color: #ffd24d; }

/* ── GRE look ── */
.xm-gre { --xm-bar: #2d2d2d; --xm-accent: #1f5fa0; }
.xm-g { padding: 6px 14px; background: linear-gradient(#fafafa, #d9d9d9); border: 1px solid #7a7a7a; border-radius: 4px; color: #1b1b1b; font-size: 13px; font-weight: 700; }
.xm-g:hover:not(:disabled) { background: linear-gradient(#ffffff, #e6e6e6); }
.xm-g.on { background: linear-gradient(#fff3c4, #f0d36b); border-color: #9a7d1e; }
.xm-g-next { min-width: 64px; }
.xm-sub { flex: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 6px 20px; background: #dedede; border-bottom: 1px solid #b9b9b9; font-size: 13.5px; color: #111; white-space: pre; }
.xm-sub-t { display: flex; align-items: center; gap: 12px; font-variant-numeric: tabular-nums; }
.xm-link { background: none; border: none; padding: 0; color: #1f4f86; text-decoration: underline; font-size: 13px; }
.xm-gre .xm-dot { width: 30px; height: 18px; }          /* GRE answer ovals */
.xm-gre .xm-opt.on .xm-dot::after { inset: 3px 5px; }
.xm-gre.xm-low .xm-sub-t [data-time] { color: #a13c2f; font-weight: 700; }

/* ── computer-based admissions test look (MAT, TMUA, STEP) ── */
.xm-cbt { --xm-bar: #00467f; --xm-accent: #00467f; }
.xm-cbt .xm-foot { background: #eef2f6; border-top: 1px solid #c5ced8; }
.xm-tl { font-size: 13px; opacity: .85; }
.xm-timebox { padding: 4px 10px; background: rgba(255,255,255,.14); border-radius: 3px; font-variant-numeric: tabular-nums; font-weight: 700; min-width: 78px; text-align: center; }
.xm-c { padding: 8px 16px; background: #fff; border: 1px solid #7f93ad; border-radius: 3px; color: #00365f; font-size: 14px; }
.xm-c:hover:not(:disabled) { background: #f0f5fa; }
.xm-c.on { background: #fff1c7; border-color: #c49a1b; }
.xm-c-next { background: #00467f; border-color: #00467f; color: #fff; font-weight: 700; min-width: 90px; }
.xm-c-next:hover:not(:disabled) { background: #0a5795; }
.xm-c-end { color: #7a1f1f; }
.xm-cbt.xm-low .xm-timebox { background: #b3261e; }

/* ── online assessment look (quant) ── */
.xm-oa { --xm-bar: #ffffff; --xm-bar-ink: #1b1b1b; --xm-accent: #1d63d8; }
.xm-oa .xm-top { border-bottom: 1px solid #e3e6ea; }
.xm-oa .xm-timebox { background: #f1f4f8; color: #1b1b1b; }
.xm-prog { flex: none; height: 4px; background: #e9edf2; }
.xm-prog i { display: block; height: 100%; width: 0; background: #1d63d8; transition: width .3s; }
.xm-oa .xm-foot { border-top: 1px solid #e3e6ea; }
.xm-o { padding: 10px 22px; border-radius: 6px; border: 1px solid #cfd6de; background: #fff; color: #333; font-size: 15px; }
.xm-o-next { background: #1d63d8; border-color: #1d63d8; color: #fff; font-weight: 700; min-width: 120px; }
.xm-o-next:hover { background: #1853b8; }
.xm-oa .xm-modal-h { background: #1d63d8; color: #fff; }

@media (max-width: 760px) {
    .xm-top { flex-wrap: wrap; gap: 8px; padding: 8px 12px; }
    .xm-title { flex-basis: 100%; font-size: 13px; }
    .xm-tools { justify-content: flex-start; gap: 6px; }
    .xm-g, .xm-b, .xm-c { padding: 6px 9px; font-size: 12px; }
    .xm-page { padding: 22px 16px 40px; }
    .xm-page.xm-split { display: block; height: auto; }
    .xm-stim { border-right: none; border-bottom: 3px solid #cfd6de; }
    .xm-stim, .xm-qpane { overflow: visible; padding: 18px 16px; }
    .xm-foot { padding: 8px 12px; }
    .xm-calc { right: 8px; top: 110px; }
}

/* results: accuracy by level, extra review bits */
.qz-levels { margin: 22px 0 6px; display: grid; gap: 8px; max-width: 560px; }
.qz-lv { display: grid; grid-template-columns: 170px 1fr 56px; align-items: center; gap: 12px; font-size: .86rem; color: var(--qz-dim); }
.qz-lv i { height: 8px; background: rgba(255,255,255,.08); display: block; }
.qz-lv i b { display: block; height: 100%; background: linear-gradient(90deg, #74D4C4, #E2A33C); }
.qz-lv em { font-style: normal; text-align: right; color: var(--qz-ink); }
.qz-warn { border-color: rgba(255,122,112,.6) !important; color: #ffb0a8 !important; }
.qz-rs { margin: 6px 0 8px; }
.qz-rs summary { cursor: pointer; font-size: .8rem; color: #9fe3d7; }

/* browse pages: answer choices as lettered circles */
.qopts { list-style: none !important; margin: 14px 0 4px !important; padding: 0 !important; counter-reset: opt; display: grid; gap: 6px; }
.qopts li { counter-increment: opt; display: flex; align-items: baseline; gap: 12px; margin: 0 !important; color: var(--fg); }
.qopts li::before { content: counter(opt, upper-alpha); flex: none; width: 24px; height: 24px; line-height: 22px; text-align: center; border: 1px solid rgba(255,255,255,.35); border-radius: 50%; font-size: .74rem; font-weight: 700; color: var(--fg-dim); transform: translateY(-1px); }
@media (max-width: 760px) {
    .xm .qc-grid { grid-template-columns: 1fr 1fr; }
    .xm .qc-grid > div + div { border-top: none; border-left: 1px solid #8c8c8c; }
    .xm-gmat .xm-mark span, .xm-ea .xm-mark span { display: none; }
    .xm-gmat .xm-time-btn, .xm-ea .xm-time-btn { min-width: 0; padding: 6px 4px; }
}

/* exam window: brand mark in the bar, watermark behind the questions */
.xm-brand { display: flex; align-items: center; gap: 8px; flex: none; padding-right: 14px; border-right: 1px solid rgba(255,255,255,.28); font-size: 12.5px; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; }
.xm-logo { width: 22px; height: 22px; flex: none; }
.xm-oa .xm-brand { border-right-color: #dfe3e8; }
.xm-quit { opacity: .85; }
.xm-wm { position: fixed; inset: 0; z-index: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; pointer-events: none; opacity: .055; color: #0e2d4f; }
.xm-wm .xm-logo { width: 250px; height: 250px; }
.xm-wm span { font: 700 20px/1 Arial, Helvetica, sans-serif; letter-spacing: .34em; text-transform: uppercase; }
.xm-page, .xm-foot, .xm-sub { position: relative; z-index: 1; }
@media (max-width: 760px) {
    .xm-brand { border-right: none; padding-right: 0; }
    .xm-brand b { display: none; }
    .xm-wm .xm-logo { width: 150px; height: 150px; }
    .xm-wm span { font-size: 13px; }
}
/* the top bar must never let its controls collide: the title truncates first */
.xm-tools { flex: 0 1 auto; min-width: 0; row-gap: 6px; }
.xm-b, .xm-g, .xm-c, .xm-o, .xm-time-btn, .xm-count, .xm-timebox, .xm-tl { flex: none; }
.xm-title { flex: 1 1 60px; }

/* practice landing: the four doors */
.qp-doors { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 26px; }
.qp-door {
    --qp-bg1: #171d47; --qp-bg2: #0b0f2e; --qp-dim: #b7bee6;
    display: flex; flex-direction: column; gap: 12px; padding: 30px 30px 26px; color: #eef1ff;
    background: radial-gradient(70% 90% at 100% 0%, rgba(116,212,196,.16), transparent 60%), linear-gradient(155deg, #171d47, #0b0f2e);
    border: 1px solid rgba(183,190,230,.25); clip-path: var(--clip-24);
    transition: transform .2s, border-color .2s;
}
.qp-door:hover { transform: translateY(-3px); border-color: rgba(116,212,196,.5); }
.qp-door h3 { margin: 0; font-size: 1.5rem; color: #fff; text-transform: none; letter-spacing: 0; }
.page-content .qp-door p { margin: 0; color: #b7bee6; line-height: 1.6; max-width: none; }
.qp-door .qp-glyph { width: 46px; height: 46px; }
.qp-door-go { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: auto !important; padding-top: 8px; }
.qp-door-link { color: #74D4C4; font-size: .84rem; letter-spacing: .06em; text-transform: uppercase; border-bottom: none; }
.qp-door-link:hover { color: #fff; }
.qp-stats-dark { margin-left: var(--indent); }
@media (max-width: 860px) { .qp-doors { grid-template-columns: 1fr; } .qp-stats-dark { margin-left: 0; } }

/* ═══ Coding track ═══════════════════════════════════════════════════ */
.cx-diff { font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.cx-diff-easy { color: #7ad6a8; border: 1px solid rgba(122,214,168,.4); background: rgba(122,214,168,.10); }
.cx-diff-medium { color: #E2A33C; border: 1px solid rgba(226,163,60,.4); background: rgba(226,163,60,.10); }
.cx-diff-hard { color: #ff8a7a; border: 1px solid rgba(255,138,122,.4); background: rgba(255,138,122,.10); }
.cx-mins, .cx-num { font-size: .75rem; color: var(--fg-faint); letter-spacing: .08em; text-transform: uppercase; }

/* code blocks with language tabs */
.cx-code { margin: 18px 0 8px var(--indent); max-width: 920px; border: 1px solid var(--rule); background: #0e0f13; }
.cx-tabs { display: flex; flex-wrap: wrap; gap: 2px; padding: 6px 6px 0; background: #14161b; border-bottom: 1px solid var(--rule); }
.cx-tab { background: none; border: none; color: var(--fg-dim); font: 600 .78rem var(--font); letter-spacing: .06em; padding: 8px 14px; cursor: pointer; border-bottom: 2px solid transparent; }
.cx-tab:hover { color: var(--fg); }
.cx-tab.on { color: var(--acc); border-bottom-color: var(--acc); }
.cx-copy { margin-left: auto; background: none; border: 1px solid var(--rule); color: var(--fg-dim); font: 600 .72rem var(--font); letter-spacing: .08em; text-transform: uppercase; padding: 5px 12px; margin-bottom: 6px; cursor: pointer; }
.cx-copy:hover { color: var(--acc); border-color: var(--acc); }
.cx-pre { margin: 0; padding: 18px 20px; overflow-x: auto; font: .88rem/1.65 ui-monospace, SFMono-Regular, Menlo, monospace; background: none !important; }
.cx-pre code { font: inherit; background: none; }
.page-content .cx-pre { margin-left: 0; }

/* problem page */
.cx-problem { max-width: none; }
.cx-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 26px; margin-left: var(--indent); }
.cx-statement h2, .cx-statement h3 { margin-top: 1.2em; }
.page-content .cx-statement p, .page-content .cx-statement ul { margin-left: 0; max-width: none; }
.cx-ex { border-collapse: collapse; width: 100%; font-size: .9rem; margin: 10px 0 4px; }
.cx-ex th { text-align: left; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--acc); padding: 6px 10px; border-bottom: 1px solid var(--rule); }
.cx-ex td { padding: 8px 10px; border-bottom: 1px solid rgba(255,255,255,.06); vertical-align: top; color: var(--fg-dim); }
.cx-ex code, .cx-list code, .cx-idea code { font: .85em ui-monospace, Menlo, monospace; background: rgba(255,255,255,.06); padding: 1px 5px; }
.cx-list { list-style: none; padding: 0; margin: 10px 0 0; }
.cx-list li { position: relative; padding-left: 18px; margin-bottom: .5em; color: var(--fg-dim); }
.cx-list li::before { content: "·"; position: absolute; left: 4px; color: var(--acc); }
.cx-hints { display: grid; gap: 6px; margin-top: 10px; }
.cx-hint summary { cursor: pointer; font-size: .85rem; color: var(--acc); padding: 8px 12px; border: 1px solid rgba(226,163,60,.3); background: rgba(226,163,60,.05); list-style: none; }
.cx-hint summary::-webkit-details-marker { display: none; }
.cx-hint[open] summary { border-bottom: none; }
.cx-hint p { margin: 0 !important; padding: 10px 12px 12px; border: 1px solid rgba(226,163,60,.3); border-top: none; font-size: .9rem; color: var(--fg-dim); }

/* the editor */
.cx-ide { border: 1px solid var(--rule); background: #0e0f13; display: flex; flex-direction: column; min-width: 0; }
.cx-ide-bar, .cx-ide-foot { display: flex; align-items: center; gap: 10px; padding: 10px 12px; background: #14161b; flex-wrap: wrap; }
.cx-ide-bar { border-bottom: 1px solid var(--rule); }
.cx-ide-foot { border-top: 1px solid var(--rule); }
.cx-ide-lang { font: 700 .74rem var(--font); letter-spacing: .1em; text-transform: uppercase; color: var(--acc); }
.cx-ide-note { font-size: .78rem; color: var(--fg-faint); font-family: ui-monospace, Menlo, monospace; }
.cx-ide-note b { color: var(--fg-dim); font-weight: 400; }
.cx-btn { background: none; border: 1px solid var(--rule); color: var(--fg); font: 600 .76rem var(--font); letter-spacing: .08em; text-transform: uppercase; padding: 9px 16px; cursor: pointer; }
.cx-btn:hover { border-color: var(--acc); color: var(--acc); }
.cx-btn.cx-primary { background: var(--acc); border-color: var(--acc); color: #111; }
.cx-btn.cx-primary:hover { background: #f0b654; color: #111; }
.cx-btn:disabled { opacity: .45; cursor: default; }
.cx-start { margin-left: auto; }
.cx-timer { font: 700 1rem ui-monospace, Menlo, monospace; color: var(--acc); font-variant-numeric: tabular-nums; }
.cx-timer.cx-low { color: #ff8a7a; }
.cx-attempts { font-size: .76rem; color: var(--fg-faint); margin-left: auto; }
.cx-editor { position: relative; min-height: 340px; }
/* CodeMirror mount. When it comes up, the Prism-over-textarea fallback stands down. */
.cx-cm { height: 100%; min-height: 340px; display: none; }
.cx-cm-on .cx-cm { display: block; }
.cx-cm-on .cx-hl, .cx-cm-on .cx-ta { display: none; }
.cx-cm .cm-editor { height: 100%; min-height: 340px; }
.cx-cm .cm-editor.cm-focused { outline: none; }
.cx-cm .cm-scroller { font-variant-ligatures: none; }
.cx-locked .cx-cm .cm-editor { opacity: .6; }
@media (max-width: 760px) { .cx-cm, .cx-cm .cm-editor { min-height: 260px; } }
.cx-hl, .cx-ta {
    margin: 0; padding: 16px 18px; border: 0; width: 100%; min-height: 340px; max-height: 60vh;
    font: .88rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; tab-size: 2; white-space: pre; overflow: auto;
}
.cx-hl { position: absolute; inset: 0; pointer-events: none; background: none !important; }
.cx-ta { position: relative; background: transparent; color: transparent; caret-color: #fff; resize: vertical; display: block; }
.cx-ta::selection { background: rgba(226,163,60,.3); }
.cx-ta:focus { outline: none; box-shadow: inset 0 0 0 1px rgba(226,163,60,.5); }
.cx-locked .cx-ta { caret-color: transparent; }
.cx-out { padding: 0 12px 12px; }
.cx-res { padding: 10px 14px; margin-top: 12px; font-size: .88rem; border-left: 3px solid var(--rule); background: rgba(255,255,255,.03); }
.cx-res-ok { border-left-color: #5fd39a; background: rgba(95,211,154,.08); }
.cx-res-no { border-left-color: #ff8a7a; background: rgba(255,138,122,.08); }
.cx-res-err { border-left-color: #E2A33C; background: rgba(226,163,60,.08); }
.cx-tests { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: .8rem; }
.cx-tests th { text-align: left; color: var(--fg-faint); font-weight: 400; padding: 4px 8px; border-bottom: 1px solid var(--rule); }
.cx-tests td { padding: 5px 8px; border-bottom: 1px solid rgba(255,255,255,.05); color: var(--fg-dim); vertical-align: top; }
.cx-tests tr.ok td:first-child { color: #5fd39a; } .cx-tests tr.no td:first-child { color: #ff8a7a; }
.cx-tests code { font-size: .95em; background: none; padding: 0; }
.cx-cplx { margin-left: var(--indent) !important; color: var(--fg-dim); }
.cx-idea { margin-left: var(--indent); max-width: var(--measure); }
.page-content .cx-idea p { margin-left: 0; }
.cx-idea ul, .cx-idea ol { margin-left: 0; max-width: var(--measure); color: var(--fg-dim); }

/* cards */
.cx-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-top: 22px; }
.cx-card { display: flex; flex-direction: column; gap: 8px; padding: 22px 24px; border: 1px solid var(--rule); border-bottom: 1px solid var(--rule); background: linear-gradient(180deg, #16171c, #111216); clip-path: var(--clip-14); transition: transform .18s, border-color .18s; }
.cx-card:hover { transform: translateY(-3px); border-color: var(--acc); }
.cx-card h3 { margin: 0; font-size: 1.1rem; text-transform: none; letter-spacing: 0; }
.cx-card p { margin: 0; font-size: .88rem; color: var(--fg-dim); line-height: 1.5; }
.page-content .cx-card p { margin-left: 0; max-width: none; }
.cx-card-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.cx-card-go { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--acc); margin-top: auto; }
.cx-card.cx-done h3::after { content: " ✓"; color: #5fd39a; }
.cx-hero-code .cx-code { margin: 0; max-width: none; background: rgba(9,12,36,.6); border-color: rgba(183,190,230,.25); }
.cx-hero-code .cx-tabs { background: rgba(255,255,255,.04); border-color: rgba(183,190,230,.2); }

/* interview mode */
.cx-iv { margin-left: var(--indent); }
.cx-iv-sets { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; margin: 18px 0 26px; }
.cx-set { display: flex; flex-direction: column; gap: 4px; text-align: left; padding: 16px 18px; background: rgba(255,255,255,.03); border: 1px solid var(--rule); color: var(--fg); cursor: pointer; clip-path: var(--clip-14); }
.cx-set:hover { border-color: var(--acc); }
.cx-set b { font-size: 1rem; } .cx-set span { font-size: .8rem; color: var(--fg-dim); }
.cx-rules { border-left: 2px solid var(--acc); padding-left: 18px; }
.cx-iv-bar { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding-bottom: 14px; margin-bottom: 18px; border-bottom: 1px solid var(--rule); }
.cx-iv-step { font: 700 .8rem var(--font); letter-spacing: .1em; text-transform: uppercase; color: var(--acc); }
.cx-iv .cx-grid { margin-left: 0; }
.cx-score { display: flex; align-items: baseline; gap: 12px; margin: 14px 0 22px; }
.cx-score b { font-size: 3.4rem; line-height: 1; color: var(--fg); }
.cx-score span { font-size: 1.3rem; color: var(--fg-dim); }
.cx-score em { font-style: normal; font-size: .9rem; color: var(--fg-faint); }
.cx-report { width: 100%; border-collapse: collapse; font-size: .86rem; }
.cx-report th { text-align: left; color: var(--acc); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; padding: 8px 10px; border-bottom: 1px solid var(--rule); }
.cx-report td { padding: 9px 10px; border-bottom: 1px solid rgba(255,255,255,.06); color: var(--fg-dim); }
.cx-report td.ok { color: #5fd39a; } .cx-report td.no { color: #ff8a7a; }
.cx-verdict { margin-top: 18px !important; color: var(--fg); border-left: 2px solid var(--acc); padding-left: 16px; }

@media (max-width: 1000px) { .cx-grid { grid-template-columns: 1fr; } }
@media (max-width: 760px) {
    .cx-grid, .cx-iv, .cx-code, .cx-idea, .cx-cplx { margin-left: 0 !important; }
    .cx-editor, .cx-hl, .cx-ta { min-height: 260px; }
    .cx-start, .cx-attempts { margin-left: 0; }
}

/* coding: panelled problem page, language dropdown, console, dry-run frames */
.cx-panel { border: 1px solid var(--rule); background: #101115; min-width: 0; display: flex; flex-direction: column; }
.cx-panel-tabs { display: flex; gap: 2px; padding: 6px 6px 0; background: #14161b; border-bottom: 1px solid var(--rule); }
.cx-ptab { background: none; border: none; color: var(--fg-dim); font: 600 .78rem var(--font); letter-spacing: .06em; padding: 9px 14px; cursor: pointer; border-bottom: 2px solid transparent; }
.cx-ptab:hover { color: var(--fg); }
.cx-ptab.on { color: var(--acc); border-bottom-color: var(--acc); }
.cx-pane { padding: 22px 24px 26px; overflow-y: auto; max-height: 78vh; }
.cx-pane h3:first-child { margin-top: 0; }
.cx-note, .cx-dry-intro { font-size: .86rem; color: var(--fg-faint); }
.cx-lang-wrap { display: inline-flex; align-items: center; }
.cx-lang { appearance: none; background: #0e0f13 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23E2A33C'/%3E%3C/svg%3E") right 10px center/9px no-repeat;
    border: 1px solid var(--rule); color: var(--fg); font: 700 .76rem var(--font); letter-spacing: .08em; text-transform: uppercase; padding: 8px 28px 8px 12px; cursor: pointer; }
.cx-lang:hover, .cx-lang:focus { border-color: var(--acc); outline: none; }
.cx-console { border-top: 1px solid var(--rule); }
.cx-console-bar { display: flex; justify-content: space-between; align-items: center; padding: 7px 14px; background: #14161b; font: 600 .7rem var(--font); letter-spacing: .12em; text-transform: uppercase; color: var(--fg-faint); }
.cx-console-hint { text-transform: none; letter-spacing: 0; font-weight: 400; }
.cx-console-idle { margin: 0 !important; padding: 14px; font-size: .85rem; color: var(--fg-faint); }
.cx-out { padding: 0 14px 14px; max-height: 320px; overflow-y: auto; }

/* dry-run frames */
.cx-dry-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.cx-dry-pos { font: 700 .78rem var(--font); letter-spacing: .08em; text-transform: uppercase; color: var(--acc); min-width: 110px; }
.cx-frames { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.cx-frame { display: grid; grid-template-columns: 78px 1fr; gap: 14px; padding: 16px; border: 1px solid var(--rule); background: rgba(255,255,255,.02); }
.cx-frame-done { border-color: rgba(95,211,154,.45); background: rgba(95,211,154,.05); }
.cx-frame-n { font: 700 .74rem var(--font); letter-spacing: .1em; text-transform: uppercase; color: var(--acc); }
.cx-frame-n span { color: var(--fg-faint); }
.cx-frame-note { margin: 12px 0 0 !important; font-size: .9rem; color: var(--fg-dim); line-height: 1.55; max-width: none !important; }
.cx-arr { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.cx-arr-label { font: .8rem ui-monospace, Menlo, monospace; color: var(--fg-faint); padding-top: 10px; }
.cx-cells { display: flex; gap: 4px; flex-wrap: wrap; }
.cx-cell { position: relative; display: flex; flex-direction: column; align-items: center; min-width: 34px; padding: 6px 6px 4px; border: 1px solid var(--rule); background: #0e0f13; }
.cx-cell b { font: .95rem ui-monospace, Menlo, monospace; color: var(--fg); }
.cx-cell i { font-style: normal; font-size: .62rem; color: var(--fg-faint); }
.cx-cell u { position: absolute; bottom: -17px; text-decoration: none; font: 700 .62rem var(--font); letter-spacing: .06em; color: var(--acc); text-transform: uppercase; }
.cx-cell.win { background: rgba(116,212,196,.10); border-color: rgba(116,212,196,.35); }
.cx-cell.hi { background: rgba(226,163,60,.16); border-color: var(--acc); }
.cx-cell.hi b { color: var(--acc); }
.cx-cell.gone { opacity: .35; }
.cx-cell.ptr { border-color: var(--acc); }
.cx-cells:has(.cx-cell u) { margin-bottom: 16px; }
.cx-vars { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.cx-vars span { font: .78rem ui-monospace, Menlo, monospace; color: var(--fg-dim); border: 1px solid var(--rule); padding: 3px 9px; }
.cx-vars em { font-style: normal; color: var(--fg-faint); margin-right: 6px; }
.cx-range { flex: 1; min-width: 220px; }
.cx-range-bar { display: block; position: relative; height: 8px; background: linear-gradient(90deg, rgba(255,138,122,.35), rgba(95,211,154,.35)); }
.cx-range-bar i { position: absolute; top: -4px; width: 3px; height: 16px; background: var(--acc); }
.cx-range-bar i.ok { background: #5fd39a; } .cx-range-bar i.no { background: #ff8a7a; }
.cx-range-ends { display: flex; justify-content: space-between; font: .72rem ui-monospace, Menlo, monospace; color: var(--fg-faint); margin-top: 6px; }
.cx-range-ends b { color: var(--acc); }
@media (max-width: 760px) { .cx-frame { grid-template-columns: 1fr; gap: 6px; } .cx-pane { padding: 16px; max-height: none; } }

/* coding: diagrams and the pattern flowchart */
.cx-dia-wrap { margin: 0 0 22px var(--indent); max-width: 560px; }
.cx-dia { width: 100%; height: auto; color: var(--acc); }
.cx-dia .d-cell { fill: #14161b; stroke: rgba(255,255,255,.18); }
.cx-dia .d-cell.d-win { fill: rgba(116,212,196,.14); stroke: rgba(116,212,196,.5); }
.cx-dia .d-cell.d-hi { fill: rgba(226,163,60,.16); stroke: var(--acc); }
.cx-dia .d-val { fill: #e9ecf5; font: 600 14px ui-monospace, Menlo, monospace; }
.cx-dia .d-arrow { stroke: var(--acc); stroke-width: 1.6; fill: none; }
.cx-dia .d-arrow.d-dim { stroke: rgba(255,255,255,.35); }
.cx-dia .d-lab { fill: var(--acc); font: 700 12px var(--font); letter-spacing: .08em; text-transform: uppercase; }
.cx-dia .d-lab.d-small { fill: #a9b0c9; font-size: 11px; letter-spacing: .04em; text-transform: none; font-weight: 400; }
.cx-dia .d-lab.d-note { fill: #6f7690; font-size: 11.5px; letter-spacing: .02em; text-transform: none; font-weight: 400; }
.cx-dia .d-lab.d-in { fill: #0e0f13; font-size: 11px; }
.cx-dia .d-frame { fill: none; stroke: rgba(116,212,196,.7); stroke-dasharray: 4 3; }
.cx-dia .d-bar { stroke: rgba(255,255,255,.2); }
.cx-dia .d-bar.d-ok { fill: rgba(95,211,154,.55); }
.cx-dia .d-bar.d-no { fill: rgba(255,138,122,.4); }
.cx-dia .d-tick { stroke: var(--acc); stroke-width: 2; }
.cx-card-dia { margin: 4px 0 2px; opacity: .95; }
.cx-card-dia .cx-dia { max-height: 120px; }
.cx-flow-wrap { margin-left: var(--indent); max-width: 940px; padding: 24px; border: 1px solid var(--rule); background: linear-gradient(160deg, #14161d, #0e0f13); clip-path: var(--clip-24); }
.cx-flow { width: 100%; height: auto; color: var(--acc); }
.cx-flow .d-node rect { fill: #171a21; stroke: rgba(255,255,255,.22); }
.cx-flow .d-node.d-start rect { fill: rgba(226,163,60,.14); stroke: var(--acc); }
.cx-flow .d-node.d-leaf rect { fill: rgba(116,212,196,.12); stroke: rgba(116,212,196,.55); }
.cx-flow .d-node.d-soft rect { fill: rgba(255,255,255,.04); stroke: rgba(255,255,255,.25); }
.cx-flow .d-nodetext { font: 13px/1.3 var(--font); color: #e9ecf5; text-align: center; display: flex; align-items: center; justify-content: center; height: 100%; }
.cx-flow .d-edge { stroke: rgba(255,255,255,.35); stroke-width: 1.4; fill: none; }
.cx-flow .d-edge-lab { fill: #8d94ad; font: 11px var(--font); }
.cx-flow .d-flow-note { fill: #6f7690; font: 12.5px var(--font); }
.cx-flow-steps { margin-left: var(--indent); }
.cx-iv-hidden { font-size: .75rem; color: var(--fg-faint); letter-spacing: .04em; }
@media (max-width: 760px) { .cx-dia-wrap, .cx-flow-wrap, .cx-flow-steps { margin-left: 0; } .cx-flow-wrap { padding: 12px; } }
.cx-compiler { margin: 10px 0 0; padding: 10px 12px; background: rgba(255,138,122,.07); border-left: 3px solid #ff8a7a; font: .78rem/1.5 ui-monospace, Menlo, monospace; color: #ffb3a8; white-space: pre-wrap; overflow-x: auto; }
.cx-compiler-note { margin: 8px 0 0 !important; font-size: .72rem; color: var(--fg-faint); }

/* ── the coding course: sidebar index, lessons, pager ── */
.cx-course { display: grid; grid-template-columns: 274px minmax(0, 1fr); gap: 30px; align-items: start; }
.cx-course-main { min-width: 0; }
.page-content .cx-course .hero.short { padding-top: 0; }
.cx-index { position: sticky; top: 92px; max-height: calc(100vh - 120px); display: flex; flex-direction: column;
    border: 1px solid var(--rule); background: #0f1014; }
.cx-index-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; padding: 14px 16px 8px;
    font: 700 .72rem var(--font); letter-spacing: .14em; text-transform: uppercase; color: var(--fg-dim); }
.cx-index-pct { color: var(--acc); letter-spacing: .04em; }
.cx-index-bar { height: 3px; background: rgba(255,255,255,.08); margin: 0 16px 10px; }
.cx-index-bar i { display: block; height: 100%; background: var(--acc); transition: width .3s; }
.cx-index-nav { overflow-y: auto; padding: 0 6px 14px; }
.cx-index-ch-name { margin: 12px 10px 4px !important; font: 700 .7rem var(--font); letter-spacing: .12em; text-transform: uppercase; color: var(--fg-faint); }
.cx-index-nav ul { list-style: none; margin: 0; padding: 0; }
.cx-index-nav li a { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-bottom: none;
    font-size: .84rem; color: var(--fg-dim); line-height: 1.3; }
.cx-index-nav li a:hover { background: rgba(255,255,255,.04); color: var(--fg); }
.cx-index-nav li.on a { background: rgba(226,163,60,.10); color: var(--fg); box-shadow: inset 2px 0 0 var(--acc); }
.cx-index-title { flex: 1; min-width: 0; }
.cx-index-min { font-size: .7rem; color: var(--fg-faint); }
.cx-tick { flex: none; width: 13px; height: 13px; border: 1px solid var(--rule); border-radius: 50%; position: relative; }
.cx-tick.done { border-color: #5fd39a; background: #5fd39a; }
.cx-tick.done::after { content: "✓"; position: absolute; inset: 0; font-size: 9px; color: #0b0b0d; display: grid; place-items: center; }
.cx-lesson-sec { padding-top: 26px; }
.cx-prose { margin-left: var(--indent); max-width: var(--measure); }
.page-content .cx-prose p { margin-left: 0; }
.cx-prose .cx-pre { margin-left: 0; border: 1px solid var(--rule); background: #0e0f13; }
.cx-callout { border-left: 2px solid var(--acc); padding: 10px 0 10px 16px; color: var(--fg) !important; background: rgba(226,163,60,.05); }
.cx-table-wrap { overflow-x: auto; margin: 16px 0; }
.cx-tbl { border-collapse: collapse; width: 100%; font-size: .9rem; }
.cx-tbl th { text-align: left; color: var(--acc); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; padding: 8px 12px; border-bottom: 1px solid var(--rule); }
.cx-tbl td { padding: 8px 12px; border-bottom: 1px solid rgba(255,255,255,.06); color: var(--fg-dim); font-variant-numeric: tabular-nums; }
.cx-course .cx-dry { margin-left: var(--indent); max-width: 760px; }
.cx-pager { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-left: var(--indent);
    padding-top: 22px; border-top: 1px solid var(--rule); flex-wrap: wrap; }
.cx-pager a { display: flex; flex-direction: column; gap: 2px; border-bottom: none; max-width: 44%; }
.cx-pager-next { text-align: right; margin-left: auto; }
.cx-pager span { font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-faint); }
.cx-pager b { font-weight: 400; color: var(--fg); font-size: .92rem; }
.cx-pager a:hover b { color: var(--acc); }
.cx-done-btn { background: none; border: 1px solid var(--rule); color: var(--fg-dim); font: 600 .72rem var(--font);
    letter-spacing: .1em; text-transform: uppercase; padding: 9px 16px; cursor: pointer; }
.cx-done-btn:hover { border-color: #5fd39a; color: #5fd39a; }
.cx-done-btn.done { border-color: #5fd39a; color: #5fd39a; background: rgba(95,211,154,.08); }
@media (max-width: 1100px) {
    .cx-course { grid-template-columns: 1fr; }
    .cx-index { position: static; max-height: none; margin-bottom: 20px; }
    .cx-index-nav { max-height: 320px; }
}
@media (max-width: 760px) { .cx-prose, .cx-pager, .cx-course .cx-dry { margin-left: 0; } }

/* the strategy hour: one clear strip, once per page */
.hour-strip { display: grid; grid-template-columns: minmax(0, 1.3fr) auto; gap: 30px; align-items: center;
    margin-left: var(--indent); max-width: 1000px; padding: 30px 34px;
    background: linear-gradient(150deg, rgba(226,163,60,.10), rgba(226,163,60,.02));
    border: 1px solid rgba(226,163,60,.4); clip-path: var(--clip-24); }
.hour-k { font-family: var(--cond); text-transform: uppercase; letter-spacing: .16em; font-size: .76rem; color: var(--acc); margin: 0 0 8px !important; }
.hour-strip h2 { margin: 0 0 10px; font-size: clamp(1.5rem, 3vw, 2rem); }
.page-content .hour-strip p { margin: 0; max-width: 52ch; color: var(--fg-dim); font-size: .95rem; line-height: 1.6; }
.hour-cta { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.hour-more { font-size: .8rem; color: var(--acc); letter-spacing: .04em; border-bottom: none; }
.hour-more:hover { color: var(--fg); }
@media (max-width: 860px) { .hour-strip { grid-template-columns: 1fr; margin-left: 0; padding: 24px 20px; gap: 18px; } }

/* ── Mental maths tests (/mental-math-test, src/drill.js) ─────────────── */
.dr { max-width: var(--wide); margin: 0 auto; }
.dr-k { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--acc); margin: 30px 0 12px; }
.dr-k:first-child { margin-top: 0; }
.dr-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.dr-card {
    text-align: left; font: inherit; color: var(--fg); cursor: pointer;
    background: rgba(255,255,255,.04); border: 1px solid var(--rule); clip-path: var(--clip-14);
    padding: 20px 20px 16px; display: flex; flex-direction: column; gap: 8px;
    transition: border-color .15s, background .15s, transform .15s;
}
.dr-card:hover, .dr-card:focus-visible { border-color: var(--acc); background: rgba(226,163,60,.07); transform: translateY(-2px); outline: none; }
.dr-card b { font-size: 1.2rem; font-weight: 700; text-transform: uppercase; letter-spacing: .03em; }
.dr-card span { font-size: .9rem; line-height: 1.5; color: var(--fg-dim); }
.dr-card .dr-fmt { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--fg); }
.dr-card.dr-focus { border-color: var(--acc); box-shadow: inset 0 0 0 1px var(--acc); }
.dr-hist { font-style: normal; font-size: .78rem; color: var(--acc); min-height: 1.1em; display: flex; align-items: center; gap: 8px; }
.dr-spark { overflow: visible; }
.dr-spark polyline { fill: none; stroke: var(--acc); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.dr-note { font-size: .86rem; color: var(--fg-dim); margin-top: 22px; line-height: 1.7; }
.dr-note kbd, .dr-note code { font: .8rem/1 ui-monospace, Menlo, monospace; border: 1px solid var(--rule); padding: 2px 6px; border-radius: 3px; color: var(--fg); background: rgba(255,255,255,.05); }

.dr-run { border: 1px solid var(--rule); clip-path: var(--clip-24); background: rgba(255,255,255,.025); }
.dr-top { display: flex; align-items: center; gap: 18px; padding: 14px 20px; border-bottom: 1px solid var(--rule); font-size: .82rem; letter-spacing: .06em; }
.dr-name { text-transform: uppercase; font-weight: 700; }
.dr-pos { color: var(--fg-dim); font-variant-numeric: tabular-nums; }
.dr-score { margin-left: auto; display: flex; align-items: baseline; gap: 6px; color: var(--fg-dim); }
.dr-score b { color: var(--fg); font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.dr-time { font: 700 1.4rem/1 var(--font); font-variant-numeric: tabular-nums; min-width: 4.2ch; text-align: right; }
.dr-low .dr-time { color: var(--acc); animation: dr-pulse 1s ease-in-out infinite; }
@keyframes dr-pulse { 50% { opacity: .45; } }
.dr-quit { font: inherit; font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--fg-dim); background: none; border: 1px solid var(--rule); padding: 6px 12px; cursor: pointer; }
.dr-quit:hover { color: var(--fg); border-color: var(--fg-dim); }
.dr-bar { height: 3px; background: var(--rule); }
.dr-bar i { display: block; height: 100%; width: 0; background: var(--acc); }
.dr-stage { position: relative; min-height: 380px; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 48px 24px 56px; gap: 34px; }
.dr-q { font: 300 clamp(2rem, 5.2vw, 3.6rem)/1.15 var(--font); text-align: center; font-variant-numeric: tabular-nums; letter-spacing: .01em; margin: 0; max-width: 22ch; }
.dr-run[data-mode="rapid"] .dr-q, .dr-run[data-mode="seq"] .dr-q { font-size: clamp(1.4rem, 3.4vw, 2.4rem); max-width: 30ch; }
.dr-count { color: var(--acc); font-weight: 700; font-size: clamp(3rem, 8vw, 5rem); }
.dr-opts { display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)); gap: 12px; width: min(760px, 100%); }
.dr-opt {
    font: 400 1.35rem/1 var(--font); font-variant-numeric: tabular-nums; color: var(--fg); cursor: pointer;
    background: rgba(255,255,255,.05); border: 1px solid var(--rule); clip-path: var(--clip-14);
    padding: 22px 12px; position: relative; transition: border-color .1s, background .1s;
}
.dr-opt span { position: absolute; top: 7px; left: 10px; font-size: .68rem; color: var(--fg-faint); }
.dr-opt:hover, .dr-opt:focus-visible { border-color: var(--acc); background: rgba(226,163,60,.10); outline: none; }
.dr-in { display: flex; gap: 10px; align-items: stretch; justify-content: center; flex-wrap: wrap; }
.dr-input {
    font: 400 1.9rem/1 var(--font); font-variant-numeric: tabular-nums; text-align: center; color: var(--fg);
    background: rgba(255,255,255,.06); border: 1px solid var(--rule); border-bottom: 2px solid var(--acc);
    width: min(320px, 70vw); padding: 14px 16px; outline: none;
}
.dr-input:focus { background: rgba(255,255,255,.09); }
.dr-go, .dr-skip { font: inherit; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; cursor: pointer; padding: 0 20px; border: 1px solid var(--acc); color: var(--acc); background: none; }
.dr-skip { border-color: var(--rule); color: var(--fg-dim); }
.dr-go:hover { background: var(--acc-lo); }
.dr-tol { font-size: .8rem; color: var(--fg-dim); margin: 10px 0 0; text-align: center; }
.dr-fb { position: absolute; inset: 0; pointer-events: none; opacity: 0; }
.dr-fb.on { animation: dr-flash .35s ease-out; }
.dr-fb.ok { background: radial-gradient(circle at 50% 45%, rgba(226,163,60,.16), transparent 60%); }
.dr-fb.no { background: radial-gradient(circle at 50% 45%, rgba(255,255,255,.10), transparent 60%); box-shadow: inset 0 0 0 1px rgba(255,255,255,.25); }
.dr-fb.sk, .dr-fb.nt { background: rgba(255,255,255,.035); }
@keyframes dr-flash { from { opacity: 1; } to { opacity: 0; } }

.dr-done { padding-top: 6px; }
.dr-r-head { display: grid; grid-template-columns: minmax(220px, auto) 1fr; gap: 28px; align-items: end; border-bottom: 1px solid var(--rule); padding-bottom: 24px; }
.dr-r-score { margin: 0; display: grid; gap: 4px; }
.dr-r-score b { font: 700 clamp(3.4rem, 8vw, 5.4rem)/0.9 var(--font); color: var(--acc); font-variant-numeric: tabular-nums; }
.dr-r-score span { text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; }
.dr-r-score em { font-style: normal; color: var(--fg-dim); font-size: .9rem; }
.dr-r-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 0; }
.dr-r-stats div { border-left: 1px solid var(--rule); padding-left: 14px; }
.dr-r-stats dt { font-size: 1.5rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.dr-r-stats dd { margin: 2px 0 0; font-size: .78rem; color: var(--fg-dim); }
.dr-r-note { color: var(--fg-dim); font-size: .92rem; margin: 18px 0 0; }
.dr-r-note b { color: var(--fg); }
.dr-r-trend svg { display: block; width: 100%; height: 48px; margin-top: 8px; }
.dr-r-cats { display: grid; gap: 8px; }
.dr-cat { display: grid; grid-template-columns: minmax(130px, 200px) 1fr 110px; gap: 14px; align-items: center; font-size: .88rem; }
.dr-cat i { height: 6px; background: var(--rule); display: block; }
.dr-cat i b { display: block; height: 100%; background: var(--acc); }
.dr-cat em { font-style: normal; color: var(--fg-dim); font-variant-numeric: tabular-nums; text-align: right; }
.dr-r-wrong h3, .dr-r-slow h3 { font-size: 1rem; margin: 34px 0 10px; }
.dr-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--rule); }
.dr-list li { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) 60px; gap: 6px 16px; padding: 11px 0; border-bottom: 1px solid var(--rule); font-size: .92rem; align-items: baseline; }
.dr-rq { font-variant-numeric: tabular-nums; }
.dr-ra { color: var(--fg-dim); font-variant-numeric: tabular-nums; }
.dr-ra b { color: var(--acc); font-weight: 400; }
.dr-rt { color: var(--fg-faint); text-align: right; font-variant-numeric: tabular-nums; }
.dr-rh { grid-column: 1 / -1; font-size: .82rem; color: var(--fg-dim); }
.dr-done .hero-cta { margin-top: 34px; }

@media (max-width: 760px) {
    .dr-top { flex-wrap: wrap; gap: 8px 14px; padding: 12px 14px; }
    .dr-score { margin-left: 0; order: 5; width: 100%; }
    .dr-time { margin-left: auto; }
    .dr-stage { min-height: 320px; padding: 34px 14px 40px; gap: 26px; }
    .dr-opts { grid-template-columns: repeat(2, 1fr); }
    .dr-opt { padding: 20px 8px; font-size: 1.25rem; }
    .dr-input { font-size: 1.6rem; width: 100%; }
    .dr-r-head { grid-template-columns: 1fr; }
    .dr-r-stats { grid-template-columns: repeat(2, 1fr); }
    .dr-cat { grid-template-columns: 1fr 90px; }
    .dr-cat i { grid-column: 1 / -1; order: 3; }
    .dr-list li { grid-template-columns: 1fr 50px; }
    .dr-ra { grid-column: 1 / -1; }
}

/* Interview papers on the quant quiz page */
.qz-papers { margin-bottom: 8px; }
.qz-paper { border-color: rgba(226,163,60,.40); }
.qz-paper:hover { border-color: var(--acc); background: rgba(226,163,60,.08); }
.qz-bank .qz-pblurb { font-size: .84rem; line-height: 1.5; color: var(--qz-dim); margin-top: 2px; }
.qz-start .qz-k + .qz-banks { margin-bottom: 26px; }

/* Quant prep hub: timed tests and coding */
.qp-more { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin-top: 18px; }
.qp-more-card {
    display: flex; flex-direction: column; gap: 10px; padding: 22px 22px 18px; text-decoration: none; color: var(--fg);
    border: 1px solid var(--rule); background: rgba(255,255,255,.035); clip-path: var(--clip-14);
    transition: border-color .15s, background .15s, transform .15s;
}
.qp-more-card:hover { border-color: var(--acc); background: rgba(226,163,60,.07); transform: translateY(-2px); }
.qp-more-card b { font-size: 1.1rem; text-transform: uppercase; letter-spacing: .03em; }
.qp-more-card span { font-size: .9rem; line-height: 1.55; color: var(--fg-dim); }
.qp-more-card em { font-style: normal; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--acc); margin-top: auto; }
.dr .dr-list, .dr .dr-list li { margin-left: 0; max-width: none; }
.dr-r-wrong h3, .dr-r-slow h3, .dr-r-note, .dr-r-cats { margin-left: 0; max-width: none; }
.dr-ans { width: 100%; display: flex; flex-direction: column; align-items: center; }
.dr-opts { width: min(820px, 100%); }
.dr-opt { min-height: 76px; }
@media (max-width: 760px) { .dr-opt { min-height: 68px; } }

/* Firm interview pages (tools/firms/build_firms.py) */
.fi-steps { padding-left: 1.2em; display: grid; gap: 12px; }
.fi-steps li { line-height: 1.6; }
.fi-src { font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--acc); margin-left: 6px; white-space: nowrap; }
.fi-note { color: var(--fg-dim); font-size: .92rem; }
.fi-probs { padding-left: 1.2em; display: grid; gap: 22px; margin-top: 18px; }
.fi-p { line-height: 1.6; }
.fi-q { margin: 0 0 8px; }
.fi-sol summary { cursor: pointer; font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--acc); }
.fi-sol[open] summary { color: var(--fg-dim); margin-bottom: 8px; }
.fi-sol p { color: var(--fg-dim); }
.fi-a b { color: var(--fg); }
.fi-more { line-height: 2; }
.fi-cta { border-left: 2px solid var(--acc); padding-left: 16px; margin-top: 26px; }
/* the list itself carries the prose indent; its paragraphs must not add another */
.fi-probs, .fi-steps { margin-left: var(--indent); max-width: var(--measure); }
.fi-probs p, .fi-probs details, .fi-steps p { margin-left: 0; max-width: none; }

/* ── Data Insights / Integrated Reasoning formats ───────────────────────── */
/* practice pages (dark theme) */
.qblank { display: inline-block; min-width: 3.2em; border-bottom: 1px solid var(--acc); color: var(--acc); text-align: center; font-weight: 700; margin: 0 2px; }
.qgi-opts { margin: 10px 0 4px; display: grid; gap: 6px; font-size: .92rem; }
.qgi-opts p { margin: 0; }
.qgi-opts b { color: var(--acc); margin-right: 6px; }
.qsep { color: var(--fg-faint); margin: 0 4px; }
.qta { border-collapse: collapse; width: 100%; margin: 12px 0 4px; font-size: .92rem; }
.qta th { font-size: .74rem; letter-spacing: .08em; text-transform: uppercase; color: var(--acc); text-align: center; padding: 6px 8px; border-bottom: 1px solid var(--rule); width: 4.5em; }
.qta th:last-child { text-align: left; width: auto; }
.qta td { padding: 8px; border-bottom: 1px solid rgba(255,255,255,.07); }
.qta td:not(:last-child) { width: 4.5em; }
.qta td:not(:last-child)::after { content: "○"; display: block; text-align: center; color: var(--fg-faint); }
.msr-static { display: grid; gap: 12px; margin-bottom: 14px; }
.msr-sec { border: 1px solid rgba(255,255,255,.09); padding: 12px 14px; background: rgba(255,255,255,.02); }
.msr-name { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--acc); margin: 0 0 8px; }
.msr-text p { margin: 0 0 8px; }
.qz-parts { margin: 8px 0 0; padding-left: 1.3em; font-size: .92rem; }

/* exam window (light theme, like the test software) */
.xm .xm-sel { font: 15px Arial, Helvetica, sans-serif; padding: 3px 6px; margin: 0 3px; border: 1px solid #7a8591; border-radius: 3px; background: #fff; color: #111; max-width: 100%; }
.xm .xm-sel:focus { outline: 2px solid #1a73e8; outline-offset: 1px; }
.xm-ta { border-collapse: collapse; width: 100%; margin: 20px 0 0; font: 15px/1.45 Arial, Helvetica, sans-serif; color: #111; }
.xm-ta th { background: #eef1f5; border: 1px solid #c8cfd7; padding: 8px 6px; font-size: 13px; text-align: center; width: 5.5em; }
.xm-ta th.xm-ta-s { text-align: left; width: auto; }
.xm-ta td { border: 1px solid #d6dbe1; padding: 9px 8px; vertical-align: middle; }
.xm-ta td:not(.xm-ta-s) { text-align: center; width: 5.5em; }
.xm-rb { display: inline-flex; align-items: center; justify-content: center; cursor: pointer; padding: 4px; }
.xm-rb input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.xm-rb .xm-dot { width: 18px; height: 18px; border-radius: 50%; border: 2px solid #5f6b76; display: inline-block; box-sizing: border-box; }
.xm-rb input:checked + .xm-dot { border-color: #1a73e8; box-shadow: inset 0 0 0 4px #fff; background: #1a73e8; }
.xm-rb input:focus-visible + .xm-dot { outline: 2px solid #1a73e8; outline-offset: 2px; }
.xm-ta tbody tr:hover { background: #f6f8fa; }
.xm .msr-tabs { display: flex; gap: 4px; border-bottom: 2px solid #b9c2cc; margin-bottom: 12px; flex-wrap: wrap; }
.xm .msr-tab { font: 700 13px Arial, Helvetica, sans-serif; padding: 8px 14px; border: 1px solid #b9c2cc; border-bottom: none; background: #eef1f5; color: #333; cursor: pointer; border-radius: 3px 3px 0 0; }
.xm .msr-tab.on { background: #fff; color: #111; position: relative; top: 2px; border-bottom: 2px solid #fff; }
.xm .msr-text { font: 15px/1.55 Arial, Helvetica, sans-serif; color: #111; }
.xm table[data-sortable] th { cursor: pointer; user-select: none; }
.xm table[data-sortable] th::after { content: "⇅"; margin-left: 4px; opacity: .45; font-size: 11px; }
.xm table[data-sortable] th[data-dir="asc"]::after { content: "▲"; opacity: .9; }
.xm table[data-sortable] th[data-dir="desc"]::after { content: "▼"; opacity: .9; }
.xm .qblank { color: #1a73e8; border-bottom-color: #1a73e8; }
.xm-n-back { background: #fff; color: #1a3d6d; border: 1px solid #1a3d6d; }
/* exam tables must fit the half-width source pane: wrap the headings, tighten the cells */
.xm .xm-stim .qtable th { white-space: normal; vertical-align: bottom; line-height: 1.25; }
.xm .xm-stim .qtable th, .xm .xm-stim .qtable td { padding: 7px 8px; font-size: 14px; }
.xm .xm-stim .qtable td { white-space: nowrap; }