:root {
    --bg:        #101114;
    --panel:     #16181d;
    --panel-2:   #1b1e24;
    --fg:        #e8e6e1;
    --dim:       #8b8f98;
    --line:      #26282e;
    --line-2:    #333740;
    --accent:    #7fb2ff;
    --accent-dk: #24344d;
    --warn:      #ffb454;

    --measure:   clamp(42rem, 42rem + (100vw - 56rem) * 0.55, var(--wide, 64rem));
    --wide:      64rem;   /* grids and catalogues */
    --radius:    10px;
    --tap:       44px;    /* minimum touch target */
}

* { box-sizing: border-box; }

html {
    background: var(--bg, #101114);
    -webkit-text-size-adjust: 100%;   /* iOS Safari inflates text in landscape without it */
}

body {
    margin: 0;
    padding: 0;
    background: var(--bg, #101114);
    color: var(--fg, #e8e6e1);
    font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", sans-serif;
    overflow-wrap: break-word;        /* µs/dB, BS.1770, third-octave — long tokens */
}

h1 {
    font-size: clamp(1.45rem, 1.15rem + 1.5vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.2;
    margin: 0 0 0.35rem;
}

h2 { font-size: 1.05rem; font-weight: 600; line-height: 1.3; margin: 0 0 0.6rem; }
h3 { font-size: 0.98rem; font-weight: 600; line-height: 1.35; margin: 0 0 0.35rem; }

p { margin: 0 0 0.9rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent, #7fb2ff); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: #a8caff; }

:focus-visible {
    outline: 2px solid var(--accent, #7fb2ff);
    outline-offset: 3px;
    border-radius: 4px;
}

code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.9em;
    background: var(--panel-2, #1b1e24);
    padding: 0.1em 0.35em;
    border-radius: 4px;
}

strong { font-weight: 620; color: #f4f2ee; }
em     { font-style: italic; }

.dim  { color: var(--dim, #8b8f98); }
.sub  { color: var(--dim, #8b8f98); margin: 0 0 1.5rem; font-size: 1.02rem; }
.lead { margin: 0 0 0.5rem; }
.rule-hr { border: 0; border-top: 1px solid var(--line, #26282e); margin: 2rem 0; }

.eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--dim, #8b8f98);
    margin: 0 0 0.5rem;
}

.intro { font-size: 1.05rem; margin: 0 0 1.75rem; }

.section {
    font-size: 1.15rem;
    margin: 2.5rem 0 0.4rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--line, #26282e);
}

.section-note { margin: 0 0 1.25rem; font-size: 0.92rem; }

.minor {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--dim, #8b8f98);
    margin: 1.1rem 0 0.35rem;
}

@media (prefers-reduced-motion: no-preference) {
    a, .tile, .row { transition: background-color 120ms ease, border-color 120ms ease; }
}