/* cloudinterviewprep.com — one stylesheet for every page.
 * Cool paper ground, ink text, one cobalt accent. Signal orange is reserved for
 * "this is where it breaks" annotations and never used decoratively.
 * Light is the default; dark follows the OS. Contrast is AA on every surface.
 */
/* Geist and Geist Mono (SIL Open Font License), self-hosted latin subsets. */
@font-face {
  font-family: "Geist"; font-style: normal; font-weight: 300 700; font-display: swap;
  src: url("/assets/fonts/geist-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Geist Mono"; font-style: normal; font-weight: 400 600; font-display: swap;
  src: url("/assets/fonts/geist-mono-latin.woff2") format("woff2");
}
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #eef1f5;
  --surface-3: #e3e8ee;
  --border: #dde3ea;
  --border-2: #c2cbd6;
  --text: #111923;
  --text-2: #445264;
  --text-3: #556275;
  --accent: #1a56c4;
  --accent-2: #12429b;
  --accent-bg: #e5edfb;
  --on-accent: #ffffff;
  --signal: #c2410c;
  --signal-bg: #fdeee5;
  --ok: #0f7a4f;
  --ink: #0d151f;
  --ink-2: #16212e;
  --ink-line: #283849;
  --ink-text: #dbe5ef;
  --ink-text-2: #9fb0c2;
  --ink-accent: #8dbdff;
  --diagram-fill: #eaf1fc;
  --shadow: 0 1px 2px rgba(17, 25, 35, 0.04), 0 8px 24px rgba(17, 25, 35, 0.06);
  --ff-sans: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --ff-mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --radius: 14px;
  --shell: 1200px;
  --gutter: 16px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a1017;
    --surface: #101923;
    --surface-2: #15202c;
    --surface-3: #1c2937;
    --border: #213040;
    --border-2: #34485d;
    --text: #e6edf5;
    --text-2: #aebccb;
    --text-3: #93a4b6;
    --accent: #80b6ff;
    --accent-2: #a9cdff;
    --accent-bg: #12284a;
    --on-accent: #06111f;
    --signal: #ff9a5c;
    --signal-bg: #3a1d0e;
    --ok: #4cc993;
    --ink: #060b11;
    --ink-2: #0e1720;
    --ink-line: #223244;
    --diagram-fill: #13233a;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

@media (min-width: 720px) {
  :root { --gutter: 32px; }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "tnum" 0;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
figure { margin: 0; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-2); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--accent-bg); }
h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.025em; line-height: 1.12; text-wrap: balance; }
p { margin: 0; }
code, kbd, pre { font-family: var(--ff-mono); font-size: 0.88em; }

.shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--gutter); }
.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; }
.skip-link { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--surface); color: var(--text); padding: 10px 14px; border-radius: 8px; box-shadow: var(--shadow); }
.skip-link:focus { top: 16px; }

/* ── Labels, buttons, links ─────────────────────────────────────────── */
.label {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--ff-mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3);
}
.label .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 4px color-mix(in srgb, var(--ok) 18%, transparent); }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 20px; border-radius: 999px;
  background: var(--accent); color: var(--on-accent);
  font-weight: 550; font-size: 16px; text-decoration: none;
  transition: background 0.2s ease, transform 0.2s ease;
}
.btn:hover { background: var(--accent-2); color: var(--on-accent); transform: translateY(-1px); }
.arrow-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 550; text-decoration: none; color: var(--text);
  border-bottom: 1px solid var(--border-2); padding-bottom: 2px;
}
.arrow-link:hover { color: var(--accent); border-color: var(--accent); }
.arrow-link svg, .btn svg { width: 16px; height: 16px; flex: none; transition: transform 0.2s ease; }
.arrow-link:hover svg, .btn:hover svg { transform: translateX(3px); }

/* ── Header ─────────────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .shell { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 650; letter-spacing: -0.02em; font-size: 17px; }
.brand:hover { color: var(--text); }
.brand svg { width: 30px; height: 30px; }
.brand b { font-weight: 650; color: var(--accent); }
.nav { display: none; align-items: center; gap: 28px; }
.nav a { color: var(--text-2); text-decoration: none; font-size: 15px; font-weight: 500; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); padding-bottom: 4px; }
.menu { position: relative; }
.menu summary {
  list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 12px; border: 1px solid var(--border-2); border-radius: 999px;
  font-size: 14px; font-weight: 550; color: var(--text);
}
.menu summary::-webkit-details-marker { display: none; }
.menu[open] summary { background: var(--surface-2); }
.menu-panel {
  position: absolute; right: 0; top: calc(100% + 10px); width: min(280px, calc(100vw - 32px));
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 8px; display: grid;
}
.menu-panel a { padding: 12px; border-radius: 8px; color: var(--text); text-decoration: none; font-weight: 500; }
.menu-panel a:hover { background: var(--surface-2); }
@media (min-width: 900px) {
  .nav { display: flex; }
  .menu { display: none; }
}

/* ── Hero ───────────────────────────────────────────────────────────── */
.hero { display: grid; gap: 48px; padding-block: 56px 48px; align-items: center; }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 4.9rem); letter-spacing: -0.045em; line-height: 0.98; margin-top: 22px; }
.hero h1 span { color: var(--accent); }
.hero .lede { margin-top: 24px; font-size: clamp(1.08rem, 1.6vw, 1.25rem); color: var(--text-2); max-width: 36rem; line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px 28px; margin-top: 34px; }
.hero-note { display: flex; gap: 12px; align-items: center; margin-top: 34px; color: var(--text-3); font-size: 14px; line-height: 1.45; }
.blocks { display: inline-grid; grid-template-columns: repeat(3, 8px); gap: 3px; flex: none; }
.blocks i { width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }
.blocks i:nth-child(2) { opacity: 0.6; }
.blocks i:nth-child(3) { opacity: 0.3; }
@media (min-width: 980px) {
  .hero { grid-template-columns: 1.02fr 0.98fr; padding-block: 88px 72px; gap: 56px; }
}

.diagram-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 20px;
  box-shadow: var(--shadow); padding: 18px; position: relative;
}
.diagram-card .diagram-head { display: flex; justify-content: space-between; align-items: center; padding: 2px 4px 14px; gap: 12px; flex-wrap: wrap; }
.diagram-card figcaption { color: var(--text-3); font-size: 13px; padding: 12px 4px 2px; line-height: 1.5; }
.dg-box { fill: var(--surface); stroke: var(--border-2); stroke-width: 1; }
.dg-region { fill: var(--diagram-fill); stroke: var(--border-2); stroke-width: 1; }
.dg-az { fill: none; stroke: var(--border-2); stroke-dasharray: 4 4; stroke-width: 1; }
.dg-text { fill: var(--text); font-family: var(--ff-sans); font-size: 13px; font-weight: 550; }
.dg-mono { fill: var(--text-3); font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 0.06em; }
.dg-line { fill: none; stroke: var(--text-3); stroke-width: 1.4; }
.dg-flow { fill: none; stroke: var(--accent); stroke-width: 1.8; }
.dg-repl { fill: none; stroke: var(--signal); stroke-width: 1.6; stroke-dasharray: 5 5; }
.dg-accent { fill: var(--accent); }
.dg-accent-soft { fill: var(--accent-bg); stroke: var(--accent); stroke-width: 1.2; }
.dg-signal { fill: var(--signal); }
.dg-signal-text { fill: var(--signal); font-family: var(--ff-mono); font-size: 10.5px; font-weight: 600; letter-spacing: 0.04em; }
.dg-packet { fill: var(--accent); }
@media (prefers-reduced-motion: reduce) { .dg-packet { display: none; } }
@media (prefers-reduced-motion: no-preference) {
  .dg-repl { animation: dash 1.2s linear infinite; }
  @keyframes dash { to { stroke-dashoffset: -20; } }
}

/* ── Inventory strip ────────────────────────────────────────────────── */
.inventory { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.inventory a { padding: 22px 16px 22px 0; text-decoration: none; color: var(--text); border-bottom: 1px solid var(--border); }
.inventory a:nth-child(odd) { border-right: 1px solid var(--border); }
.inventory a:nth-child(even) { padding-left: 16px; }
.inventory a:nth-last-child(-n + 2) { border-bottom: 0; }
.inventory strong { display: flex; align-items: baseline; gap: 6px; font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 600; letter-spacing: -0.04em; line-height: 1; }
.inventory strong small { font-size: 14px; color: var(--accent); font-weight: 500; }
.inventory span { display: block; margin-top: 8px; color: var(--text-2); font-size: 14px; }
.inventory a:hover strong { color: var(--accent); }
@media (min-width: 820px) {
  .inventory { grid-template-columns: repeat(4, 1fr); }
  .inventory a, .inventory a:nth-child(even) { padding: 26px 24px; border-bottom: 0; border-right: 1px solid var(--border); }
  .inventory a:first-child { padding-left: 0; }
  .inventory a:last-child { border-right: 0; }
}

/* ── Sections ───────────────────────────────────────────────────────── */
.section { padding-block: 72px; }
@media (min-width: 900px) { .section { padding-block: 104px; } }
.section-head { display: grid; gap: 20px; margin-bottom: 44px; }
.section-head h2 { font-size: clamp(2rem, 4.2vw, 3.1rem); letter-spacing: -0.04em; margin-top: 14px; }
.section-head p { color: var(--text-2); max-width: 34rem; font-size: 1.06rem; }
.section-head > div:last-child { display: grid; gap: 18px; align-content: end; justify-items: start; }
@media (min-width: 900px) { .section-head { grid-template-columns: 1.1fr 0.9fr; align-items: end; gap: 48px; } }

/* Tracks */
.tracks { display: grid; gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.track { background: var(--surface); padding: 26px 24px 24px; display: flex; flex-direction: column; gap: 12px; }
.track h3 { font-size: 1.22rem; }
.track p { color: var(--text-2); font-size: 15px; }
.track ul { list-style: none; padding: 0; margin: 4px 0 0; display: grid; gap: 6px; }
.track li { font-size: 14px; color: var(--text-2); padding-left: 16px; position: relative; }
.track li::before { content: ""; position: absolute; left: 0; top: 0.7em; width: 7px; height: 1px; background: var(--border-2); }
.track .arrow-link { margin-top: auto; padding-top: 10px; align-self: flex-start; font-size: 15px; border-bottom: 0; }
.track-icon { width: 40px; height: 40px; border-radius: 10px; background: var(--accent-bg); display: grid; place-items: center; color: var(--accent); }
.track-icon svg { width: 22px; height: 22px; }
.track.is-new { background: linear-gradient(180deg, var(--accent-bg), var(--surface) 70%); }
@media (min-width: 640px) { .tracks { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .tracks { grid-template-columns: repeat(4, 1fr); } }

/* Ink (dark) feature band */
.ink-band { background: var(--ink); color: var(--ink-text); }
.ink-band .label { color: var(--ink-text-2); }
.ink-band .section-head p { color: var(--ink-text-2); }
.ink-band .arrow-link { color: var(--ink-text); border-color: var(--ink-line); }
.ink-band .arrow-link:hover { color: var(--ink-accent); border-color: var(--ink-accent); }
.ink-band .btn { background: var(--ink-accent); color: #06111f; }
.ink-band .btn:hover { background: #b3d4ff; }
.agentic-grid { display: grid; gap: 40px; align-items: start; }
@media (min-width: 980px) { .agentic-grid { grid-template-columns: 1fr 1fr; gap: 64px; } }
.ink-panel { background: var(--ink-2); border: 1px solid var(--ink-line); border-radius: 20px; padding: 18px; }
.ink-panel figcaption { color: var(--ink-text-2); font-size: 13px; padding: 12px 4px 2px; }
.ag-node { fill: #132131; stroke: #2f4560; stroke-width: 1; }
.ag-core { fill: #10294a; stroke: var(--ink-accent); stroke-width: 1.4; }
.ag-text { fill: var(--ink-text); font-family: var(--ff-sans); font-size: 13px; font-weight: 550; }
.ag-mono { fill: var(--ink-text-2); font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 0.06em; }
.ag-line { fill: none; stroke: #3c5470; stroke-width: 1.4; }
.ag-flow { fill: none; stroke: var(--ink-accent); stroke-width: 1.6; }
.ag-guard { fill: none; stroke: #ff9a5c; stroke-width: 1.2; stroke-dasharray: 3 4; }
.ag-guard-text { fill: #ff9a5c; font-family: var(--ff-mono); font-size: 10.5px; letter-spacing: 0.05em; }
.ag-dot { fill: var(--ink-accent); }
.probe-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0; border-top: 1px solid var(--ink-line); }
.probe-list li { padding: 18px 0; border-bottom: 1px solid var(--ink-line); display: grid; grid-template-columns: 44px 1fr; gap: 6px 12px; }
.probe-list .n { font-family: var(--ff-mono); font-size: 12px; color: var(--ink-accent); padding-top: 4px; }
.probe-list h3 { font-size: 1.08rem; color: #fff; letter-spacing: -0.015em; }
.probe-list p { grid-column: 2; color: var(--ink-text-2); font-size: 15px; }

/* Worked case */
.case { display: grid; gap: 32px; align-items: stretch; background: var(--surface); border: 1px solid var(--border); border-radius: 22px; padding: 28px 22px; box-shadow: var(--shadow); }
@media (min-width: 980px) { .case { grid-template-columns: 0.95fr 1.05fr; padding: 48px; gap: 56px; } }
.case h3 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); letter-spacing: -0.035em; margin: 14px 0 18px; line-height: 1.08; }
.case h3 span { color: var(--signal); }
.case p { color: var(--text-2); }
.case .btn { margin-top: 28px; }
.terminal { background: var(--ink); color: var(--ink-text); border-radius: 16px; overflow: hidden; display: flex; flex-direction: column; border: 1px solid var(--ink-line); }
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--ink-line); font-family: var(--ff-mono); font-size: 12px; color: var(--ink-text-2); }
.terminal-bar i { width: 10px; height: 10px; border-radius: 50%; background: #2b3b4d; }
.terminal-bar span { margin-left: 8px; }
.terminal ol { list-style: none; margin: 0; padding: 18px 18px 6px; display: grid; gap: 14px; font-size: 15px; counter-reset: step; }
.terminal li { display: grid; grid-template-columns: 30px 1fr; gap: 10px; counter-increment: step; color: var(--ink-text); line-height: 1.5; }
.terminal li::before { content: counter(step, decimal-leading-zero); font-family: var(--ff-mono); font-size: 12px; color: var(--ink-accent); padding-top: 3px; }
.terminal li b { color: #fff; font-weight: 600; }
.terminal li em { font-style: normal; color: #ffb48a; }
.terminal .q { margin: 8px 18px 18px; padding: 14px 16px; border-radius: 10px; background: #1a1410; border: 1px solid #4a2c18; color: #ffcfb0; font-size: 15px; }

/* Roles */
.roles { display: grid; gap: 16px; }
@media (min-width: 680px) { .roles { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1040px) { .roles { grid-template-columns: repeat(3, 1fr); } }
.role { border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; background: var(--surface); display: grid; gap: 10px; align-content: start; }
.role h3 { font-size: 1.15rem; }
.role p { color: var(--text-2); font-size: 15px; }
.role .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.tag { font-family: var(--ff-mono); font-size: 11.5px; padding: 4px 9px; border-radius: 999px; background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border); }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 640px; }
th, td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { font-family: var(--ff-mono); font-size: 11.5px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--text-3); font-weight: 500; background: var(--surface-2); }
tbody tr:last-child td { border-bottom: 0; }
tbody th { font-weight: 600; color: var(--text); }
td { color: var(--text-2); }
.table-note { color: var(--text-3); font-size: 13px; margin-top: 12px; }

/* Editorial standard */
.standard { display: grid; gap: 28px; border-top: 1px solid var(--border); padding-top: 56px; }
@media (min-width: 900px) { .standard { grid-template-columns: 160px 1fr; gap: 48px; } }
.standard .glyph { font-size: 5rem; line-height: 1; color: var(--accent); font-weight: 300; }
.standard h2 { font-size: clamp(1.9rem, 3.8vw, 2.8rem); letter-spacing: -0.04em; margin: 14px 0 18px; }
.standard p { color: var(--text-2); max-width: 44rem; }
.principles { display: grid; gap: 14px; margin-top: 28px; }
@media (min-width: 720px) { .principles { grid-template-columns: repeat(2, 1fr); } }
.principles div { border-left: 2px solid var(--accent); padding: 4px 0 4px 16px; }
.principles strong { display: block; font-weight: 600; }
.principles span { color: var(--text-2); font-size: 15px; }

/* FAQ */
.faq { border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary {
  cursor: pointer; list-style: none; padding: 22px 40px 22px 0; position: relative;
  font-weight: 600; font-size: 1.08rem; letter-spacing: -0.015em;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; position: absolute; right: 6px; top: 50%; width: 12px; height: 12px; margin-top: -8px;
  border-right: 1.6px solid var(--text-3); border-bottom: 1.6px solid var(--text-3);
  transform: rotate(45deg); transition: transform 0.2s ease;
}
.faq details[open] summary::after { transform: rotate(-135deg); margin-top: -2px; }
.faq .answer { padding: 0 0 24px; color: var(--text-2); max-width: 48rem; display: grid; gap: 12px; }

/* Closing */
.closing { text-align: center; padding-block: 96px; border-top: 1px solid var(--border); background: radial-gradient(60% 80% at 50% 0%, var(--accent-bg), transparent 70%); }
.closing h2 { font-size: clamp(2.1rem, 5vw, 3.6rem); letter-spacing: -0.045em; margin: 16px auto 30px; max-width: 18ch; }
.closing .hero-actions { justify-content: center; }

/* ── Footer ─────────────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding-block: 56px 40px; font-size: 15px; background: var(--surface); }
.footer-grid { display: grid; gap: 36px; }
@media (min-width: 820px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; } }
.footer-grid p { color: var(--text-2); margin-top: 14px; max-width: 26rem; }
.footer-grid h2 { font-family: var(--ff-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-3); font-weight: 500; margin-bottom: 14px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.footer-grid a { color: var(--text-2); text-decoration: none; }
.footer-grid a:hover { color: var(--accent); }
.footer-base { margin-top: 48px; padding-top: 22px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--text-3); font-size: 13px; }

/* ── Article pages ──────────────────────────────────────────────────── */
.crumbs { font-size: 14px; color: var(--text-3); padding-top: 28px; }
.crumbs ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--border-2); }
.crumbs a { color: var(--text-3); text-decoration: none; }
.crumbs a:hover { color: var(--accent); }
.page-hero { padding-block: 32px 40px; border-bottom: 1px solid var(--border); }
.page-hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.8rem); letter-spacing: -0.045em; line-height: 1.02; margin-top: 16px; max-width: 22ch; }
.page-hero .lede { margin-top: 20px; font-size: clamp(1.06rem, 1.5vw, 1.2rem); color: var(--text-2); max-width: 44rem; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 24px; font-family: var(--ff-mono); font-size: 12.5px; color: var(--text-3); }

.article-layout { display: grid; gap: 40px; padding-block: 48px 88px; }
@media (min-width: 1040px) { .article-layout { grid-template-columns: 240px minmax(0, 1fr); gap: 64px; } }
.toc { font-size: 14px; }
.toc nav { position: sticky; top: 96px; }
.toc ol { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 2px; border-left: 1px solid var(--border); }
.toc a { display: block; padding: 6px 0 6px 14px; color: var(--text-2); text-decoration: none; margin-left: -1px; border-left: 1px solid transparent; line-height: 1.4; }
.toc a:hover { color: var(--accent); border-left-color: var(--accent); }
@media (max-width: 1039px) {
  .toc nav { position: static; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; }
}

.prose { max-width: 46rem; min-width: 0; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); letter-spacing: -0.035em; margin-top: 2.4em; padding-top: 0.4em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.22rem; letter-spacing: -0.02em; margin-top: 1.9em; }
.prose p, .prose li { color: var(--text-2); }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li + li { margin-top: 0.4em; }
.prose li::marker { color: var(--text-3); }
.prose code { background: var(--surface-2); border: 1px solid var(--border); padding: 1px 6px; border-radius: 6px; color: var(--text); }
.prose pre { background: var(--ink); color: var(--ink-text); padding: 18px 20px; border-radius: 12px; overflow-x: auto; line-height: 1.55; }
.prose pre code { background: none; border: 0; padding: 0; color: inherit; font-size: 14px; }
.prose .table-wrap { margin-top: 1.4em; }
.prose figure { margin: 2em 0; }

.callout { border: 1px solid var(--border); border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; padding: 18px 20px; }
.callout.warn { border-left-color: var(--signal); }
.callout > * + * { margin-top: 0.6em; }
.callout .label { margin-bottom: 4px; }
.callout p { color: var(--text-2); }

/* Question blocks (questions page and guides) */
.qa { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); padding: 24px 22px; margin-top: 18px; }
.prose > .qa { margin-top: 18px; }
.qa h3 { margin-top: 0; font-size: 1.14rem; line-height: 1.3; }
.qa .qa-meta { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 14px; }
.qa .tests { font-size: 14.5px; color: var(--text-3); margin-bottom: 12px; }
.qa .tests strong { color: var(--text-2); font-weight: 600; }
.qa ul { margin: 0; padding-left: 1.2em; }
.qa li { font-size: 15.5px; }
.qa .trap { margin-top: 14px; font-size: 14.5px; color: var(--text-2); padding: 10px 14px; border-radius: 10px; background: var(--signal-bg); }
.qa .trap strong { color: var(--signal); }
.level { font-family: var(--ff-mono); font-size: 11.5px; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-2); background: var(--surface-2); }
.level.l-core { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, var(--border)); }
.level.l-senior { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.level.l-staff { color: var(--signal); border-color: color-mix(in srgb, var(--signal) 40%, var(--border)); }

.next-steps { display: grid; gap: 14px; margin-top: 2.4em; }
@media (min-width: 720px) { .next-steps { grid-template-columns: repeat(2, 1fr); } }
.next-steps a { display: grid; gap: 6px; padding: 20px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); text-decoration: none; color: var(--text); }
.next-steps a:hover { border-color: var(--accent); }
.next-steps a span { color: var(--text-2); font-size: 15px; }
.prose .next-steps a span { color: var(--text-2); }

/* 404 */
.not-found { padding-block: 120px; text-align: center; display: grid; justify-items: center; gap: 20px; }
.not-found h1 { font-size: clamp(2.4rem, 6vw, 4rem); letter-spacing: -0.045em; }
.not-found p { color: var(--text-2); max-width: 32rem; }