/* ==========================================================================
   vxnode — Ghost theme
   1. Tokens          5. Layout primitives   9. Article
   2. Reset           6. Header              10. Content (Koenig cards)
   3. Typography      7. Cards & feed        11. Footer
   4. Utilities       8. Sections            12. Responsive & motion
   ========================================================================== */

/* 1. Tokens ---------------------------------------------------------------- */

:root {
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, "SF Mono", "JetBrains Mono", "Roboto Mono", Menlo, Consolas, monospace;
    --font-head: var(--gh-font-heading, var(--font-sans));
    --font-body: var(--gh-font-body, var(--font-sans));

    --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.83rem);
    --step-0: clamp(0.95rem, 0.92rem + 0.15vw, 1.03rem);
    --step-1: clamp(1.1rem, 1.03rem + 0.35vw, 1.3rem);
    --step-2: clamp(1.35rem, 1.2rem + 0.75vw, 1.85rem);
    --step-3: clamp(1.8rem, 1.45rem + 1.7vw, 3rem);
    --step-4: clamp(2.3rem, 1.6rem + 3.2vw, 4.6rem);

    --gap: clamp(1rem, 0.6rem + 1.6vw, 2rem);
    --section: clamp(3.5rem, 2rem + 6vw, 7rem);
    --radius: 3px;
    --measure: 68ch;
    --ease: cubic-bezier(0.2, 0.6, 0.25, 1);
    --dur: 180ms;

    /* Light palette (default) */
    --bg: #FBFAF8;
    --surface: #FFFFFF;
    --surface-2: #F2F1ED;
    --border: #E3E1DC;
    --border-strong: #CBC8C1;
    --text: #16181B;
    --text-dim: #5B626A;
    --text-faint: #6C737B;
    --accent: #26558F;
    --accent-soft: rgba(38, 85, 143, 0.1);
    --code-bg: #F5F4F1;
    --shadow-1: 0 1px 2px rgba(20, 22, 26, 0.04);
    --shadow-2: 0 12px 32px -12px rgba(20, 22, 26, 0.22);
    --selection: rgba(38, 85, 143, 0.16);
}

/* Dark palette — applied by [data-theme="dark"], with a no-JS fallback
   for visitors whose OS prefers dark and who have not chosen light. */
[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0B0C0E;
    --surface: #121417;
    --surface-2: #171A1E;
    --border: #23272D;
    --border-strong: #343A43;
    --text: #E7E9EC;
    --text-dim: #98A0A9;
    --text-faint: #89929C;
    --accent: #7EA9DD;
    --accent-soft: rgba(126, 169, 221, 0.12);
    --code-bg: #0E1114;
    --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-2: 0 16px 40px -16px rgba(0, 0, 0, 0.7);
    --selection: rgba(126, 169, 221, 0.22);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --bg: #0B0C0E;
        --surface: #121417;
        --surface-2: #171A1E;
        --border: #23272D;
        --border-strong: #343A43;
        --text: #E7E9EC;
        --text-dim: #98A0A9;
        --text-faint: #89929C;
        --accent: #7EA9DD;
        --accent-soft: rgba(126, 169, 221, 0.12);
        --code-bg: #0E1114;
        --shadow-1: 0 1px 2px rgba(0, 0, 0, 0.4);
        --shadow-2: 0 16px 40px -16px rgba(0, 0, 0, 0.7);
        --selection: rgba(126, 169, 221, 0.22);
    }
}

[data-theme="light"] { color-scheme: light; }

/* Accent variants (custom setting) — one accent, three tuned identities */
.appearance-amber { --accent: #8F5D14; --accent-soft: rgba(143, 93, 20, 0.12); --selection: rgba(143, 93, 20, 0.18); }
[data-theme="dark"] .appearance-amber { --accent: #D3A05B; --accent-soft: rgba(211, 160, 91, 0.14); --selection: rgba(211, 160, 91, 0.2); }
.appearance-violet { --accent: #574787; --accent-soft: rgba(87, 71, 135, 0.12); --selection: rgba(87, 71, 135, 0.18); }
[data-theme="dark"] .appearance-violet { --accent: #9C90D2; --accent-soft: rgba(156, 144, 210, 0.14); --selection: rgba(156, 144, 210, 0.2); }
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .appearance-amber { --accent: #D3A05B; --accent-soft: rgba(211, 160, 91, 0.14); }
    :root:not([data-theme="light"]) .appearance-violet { --accent: #9C90D2; --accent-soft: rgba(156, 144, 210, 0.14); }
}

/* 2. Reset ----------------------------------------------------------------- */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--step-0);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img, svg, video, iframe { max-width: 100%; }
img { height: auto; display: block; }
::selection { background: var(--selection); }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }

:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

/* 3. Typography ------------------------------------------------------------ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-head);
    font-weight: 600;
    letter-spacing: -0.021em;
    line-height: 1.18;
    margin: 0;
    text-wrap: balance;
}

.mono, .label, .post-meta, .entry-meta, code, kbd, pre {
    font-family: var(--font-mono);
    font-feature-settings: "liga" 0;
}

.label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-faint);
}
.label-accent { color: var(--accent); }
.label-row { display: flex; gap: 0.75rem; align-items: center; margin-bottom: 1.1rem; flex-wrap: wrap; }

/* 4. Utilities ------------------------------------------------------------- */

.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: 1rem; top: -100%; z-index: 100;
    padding: 0.7rem 1.1rem; background: var(--surface); color: var(--text);
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 1rem; }
.site-main:focus { outline: none; }

.wrap { width: min(100% - 2 * var(--gap), 1180px); margin-inline: auto; }
.wrap-narrow { width: min(100% - 2 * var(--gap), 720px); margin-inline: auto; }

.btn {
    display: inline-block;
    padding: 0.7rem 1.4rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    background: var(--surface);
    font-size: var(--step--1);
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover { border-color: var(--accent); transform: translateY(-2px); }

/* 5. Layout primitives ----------------------------------------------------- */

.site-main { display: block; min-height: 50vh; }

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 1.1rem;
    margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
    border-bottom: 1px solid var(--border);
}
.section-title { font-size: var(--step-2); }
.section-count { font-size: var(--step--1); color: var(--text-faint); letter-spacing: 0.06em; }

/* 6. Header ---------------------------------------------------------------- */

.site-header {
    border-bottom: 1px solid var(--border);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: saturate(140%) blur(10px);
    z-index: 50;
}
body.has-sticky-header .site-header { position: sticky; top: 0; }

.site-header-inner {
    display: flex;
    align-items: center;
    gap: clamp(1rem, 3vw, 2.5rem);
    min-height: 60px;
}

.brand { display: inline-flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.brand-mark {
    width: 10px; height: 10px;
    border: 1.5px solid var(--accent);
    border-radius: 1px;
    transform: rotate(45deg);
    transition: transform 260ms var(--ease), background var(--dur) var(--ease);
}
.brand:hover .brand-mark { transform: rotate(135deg); background: var(--accent); }
.brand-name {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.primary-nav { margin-right: auto; }
.nav-list { display: flex; gap: clamp(0.9rem, 2vw, 1.6rem); list-style: none; margin: 0; padding: 0; }
.nav-item a {
    position: relative;
    font-size: var(--step--1);
    color: var(--text-dim);
    padding-block: 0.35rem;
    transition: color var(--dur) var(--ease);
}
.nav-item a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: 0;
    height: 1px; background: var(--accent);
    transform: scaleX(0); transform-origin: left;
    transition: transform 220ms var(--ease);
}
.nav-item a:hover { color: var(--text); }
.nav-item a:hover::after, .nav-current a::after { transform: scaleX(1); }
.nav-current a { color: var(--text); }

.header-tools { display: flex; align-items: center; gap: 0.9rem; }

.tool-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; padding: 0;
    background: transparent; border: 1px solid transparent; border-radius: var(--radius);
    color: var(--text-dim); cursor: pointer;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tool-btn svg { width: 17px; height: 17px; }
.tool-btn:hover { color: var(--text); border-color: var(--border); }

.lang-switcher {
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em;
    color: var(--text-faint);
}
.lang-switcher a { transition: color var(--dur) var(--ease); }
.lang-switcher a:hover { color: var(--accent); }

.theme-toggle {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.theme-toggle button {
    display: inline-flex; align-items: center; justify-content: center;
    width: 30px; height: 28px; padding: 0;
    background: transparent; border: 0; cursor: pointer;
    color: var(--text-faint);
    transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.theme-toggle button svg { width: 14px; height: 14px; }
.theme-toggle button:hover { color: var(--text); }
.theme-toggle button[aria-pressed="true"] { color: var(--accent); background: var(--accent-soft); }
.theme-toggle button + button { border-left: 1px solid var(--border); }

.mobile-nav { display: none; margin-left: auto; }
.mobile-nav > summary { list-style: none; cursor: pointer; }
.mobile-nav > summary::-webkit-details-marker { display: none; }
.mobile-nav-panel {
    position: absolute; left: 0; right: 0;
    padding: 1.2rem var(--gap) 1.6rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-2);
}
.mobile-nav-panel .nav-list { flex-direction: column; gap: 0.2rem; }
.mobile-nav-panel .nav-item a { display: block; padding: 0.6rem 0; font-size: var(--step-1); color: var(--text); }
.mobile-nav-tools {
    display: flex; align-items: center; justify-content: space-between;
    gap: 1rem; margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px solid var(--border);
}

/* 7. Index (article listing) ---------------------------------------------- */

.masthead { padding-block: clamp(3.5rem, 9vw, 7rem) 0; }
.masthead-title { font-size: var(--step-4); letter-spacing: -0.045em; }
.masthead-rule { height: 1px; background: var(--border); margin-top: clamp(2rem, 5vw, 3.5rem); }
.meta-sep { opacity: 0.5; }

.masthead-lead {
    max-width: 34ch; margin: 1.2rem 0 0;
    font-size: var(--step-1); color: var(--text-dim); line-height: 1.45;
    text-wrap: balance;
}

.spec {
    display: grid; gap: 0;
    margin: clamp(2.5rem, 6vw, 4rem) 0 0;
    max-width: 420px;
    font-size: 0.72rem; letter-spacing: 0.06em;
}
.spec-row {
    display: flex; align-items: baseline; gap: 1rem;
    padding: 0.55rem 0;
    border-top: 1px solid var(--border);
}
.spec-row:last-child { border-bottom: 1px solid var(--border); }
.spec dt { flex: 0 0 auto; color: var(--text-faint); text-transform: uppercase; }
.spec dd { margin: 0 0 0 auto; color: var(--text-dim); text-align: right; }

.lead-section { padding-block: clamp(3rem, 7vw, 5.5rem) 0; }
.lead-entry { position: relative; }
.lead-link { display: block; max-width: 52ch; }
.lead-head { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.1rem; }
.lead-title {
    font-size: var(--step-3); letter-spacing: -0.035em;
    transition: color var(--dur) var(--ease);
}
.lead-link:hover .lead-title { color: var(--accent); }
.lead-excerpt { color: var(--text-dim); margin: 1.1rem 0 1.3rem; }
.lead-meta {
    display: flex; flex-wrap: wrap; gap: 1.1rem; margin: 0;
    font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--text-faint);
}
.lead-media {
    display: block; margin-top: clamp(2rem, 4vw, 3rem);
    overflow: hidden; border-radius: var(--radius);
}
.lead-media img {
    width: 100%; aspect-ratio: 21 / 9; object-fit: cover;
    transition: transform 600ms var(--ease), filter 600ms var(--ease);
}
.lead-media:hover img { transform: scale(1.015); filter: brightness(1.04); }

.feed-section, .topics-section { padding-block: clamp(3.5rem, 8vw, 6rem) 0; }

.index-list { list-style: none; margin: 0; padding: 0; }

.entry { border-bottom: 1px solid var(--border); }
.entry:first-child { border-top: 1px solid var(--border); }

.entry-link {
    position: relative;
    display: grid;
    grid-template-columns: 3.5rem minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 0 1.5rem;
    padding: clamp(1.1rem, 2.2vw, 1.6rem) 0;
    transition: padding-left 260ms var(--ease);
}
.entry-link::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0;
    width: 1px; background: var(--accent);
    transform: scaleY(0); transform-origin: center;
    transition: transform 260ms var(--ease);
}
.entry-link:hover { padding-left: 0.9rem; }
.entry-link:hover::before { transform: scaleY(1); }

.entry-num {
    font-size: 0.72rem; letter-spacing: 0.05em;
    color: var(--text-faint); font-variant-numeric: tabular-nums;
    transition: color var(--dur) var(--ease);
}
.entry-link:hover .entry-num { color: var(--accent); }

.entry-main { display: block; min-width: 0; }
.entry-title {
    display: block;
    font-family: var(--font-head); font-weight: 600;
    font-size: var(--step-1); line-height: 1.25; letter-spacing: -0.022em;
    text-wrap: balance;
    transition: color var(--dur) var(--ease);
}
.entry-link:hover .entry-title { color: var(--accent); }
.entry-excerpt {
    display: block; margin-top: 0.45rem; max-width: 58ch;
    font-size: var(--step--1); line-height: 1.55; color: var(--text-dim);
}

.entry-meta {
    display: flex; align-items: baseline; justify-content: flex-end;
    gap: 1.1rem; white-space: nowrap;
    font-size: 0.68rem; letter-spacing: 0.11em; text-transform: uppercase;
    color: var(--text-faint);
}
.entry-topic { color: var(--text-dim); }
.entry-time { font-variant-numeric: tabular-nums; }
.entry-lock { color: var(--accent); font-size: 0.6rem; }

/* Thumbnail preview — pointer devices only, never shifts the layout */
.entry-thumb { display: none; }

@media (min-width: 1000px) and (hover: hover) {
    .entry-thumb {
        display: block; position: absolute;
        right: 0; top: 50%;
        width: 132px; height: 84px;
        overflow: hidden; border-radius: 2px;
        pointer-events: none;
        opacity: 0;
        transform: translate(0.6rem, calc(-50% + 6px));
        transition: opacity 220ms var(--ease), transform 260ms var(--ease);
        box-shadow: var(--shadow-2);
    }
    .entry-thumb img { width: 100%; height: 100%; object-fit: cover; }
    .entry-link:hover .entry-thumb { opacity: 1; transform: translate(0, -50%); }
    .entry-link:hover .entry-meta { opacity: 0; transition: opacity 160ms var(--ease); }
}

.index-compact .entry-excerpt { display: none; }

.empty { color: var(--text-faint); padding-block: 2rem; }

.pagination {
    display: flex; align-items: center; justify-content: space-between; gap: 1rem;
    margin-top: clamp(2rem, 4vw, 3rem); padding-top: 1.4rem;
    font-size: var(--step--1);
}
.page-link { color: var(--text-dim); transition: color var(--dur) var(--ease); }
.page-link:hover { color: var(--accent); }
.page-link.is-disabled { opacity: 0.25; }
.page-number { color: var(--text-faint); letter-spacing: 0.1em; }

/* 8. Sections -------------------------------------------------------------- */

.topic-index { list-style: none; margin: 0; padding: 0; }
.topic-index li + li { border-top: 1px solid var(--border); }
.topic-index a {
    display: flex; align-items: baseline; gap: 1rem;
    padding: 0.75rem 0;
    font-size: var(--step-0);
    transition: color var(--dur) var(--ease), padding-left 240ms var(--ease);
}
.topic-index a:hover { color: var(--accent); padding-left: 0.6rem; }
.topic-rule { flex: 1; height: 1px; background: var(--border); }
.topic-count { font-size: 0.7rem; color: var(--text-faint); font-variant-numeric: tabular-nums; }

.cta {
    margin-block: var(--section) 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}
.cta-inner { padding: clamp(1.8rem, 4vw, 3rem); max-width: 640px; }
.cta-title { font-size: var(--step-2); margin-top: 0.6rem; }
.cta-lead { color: var(--text-dim); margin: 0.8rem 0 1.5rem; }
.cta-form { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.cta-form input {
    flex: 1 1 240px; min-width: 0;
    padding: 0.75rem 0.9rem;
    background: var(--bg); color: var(--text);
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    font: inherit; font-size: var(--step--1);
    transition: border-color var(--dur) var(--ease);
}
.cta-form input:focus { border-color: var(--accent); }
.cta-form button {
    padding: 0.75rem 1.4rem;
    background: var(--accent); color: var(--bg);
    border: 1px solid var(--accent); border-radius: var(--radius);
    font-size: var(--step--1); cursor: pointer;
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.cta-form button:hover { transform: translateY(-2px); opacity: 0.92; }
.cta-msg { display: none; margin: 0.9rem 0 0; font-size: var(--step--1); }
.cta-success { color: var(--accent); }
.cta-error { color: #C4553D; }
form.success .cta-success, form.error .cta-error { display: block; }
.cta-inner form.success ~ .cta-success { display: block; }

/* 9. Article --------------------------------------------------------------- */

.article { padding-block: clamp(2.5rem, 6vw, 4.5rem) 0; }
.article-head { margin-bottom: clamp(1.8rem, 4vw, 3rem); }
.article-title { font-size: var(--step-3); }
.article-lead {
    font-size: var(--step-1); color: var(--text-dim);
    margin: 1.1rem 0 0; line-height: 1.5; max-width: 56ch;
}

.post-meta {
    display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
    margin-top: 1.6rem; padding-top: 1.2rem; border-top: 1px solid var(--border);
    font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.04em;
}
.byline { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--text-dim); transition: color var(--dur) var(--ease); }
.byline:hover { color: var(--accent); }
.avatar { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; }
.avatar-fallback {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--surface-2); border: 1px solid var(--border);
    text-transform: uppercase; font-size: 0.65rem; color: var(--text-dim);
}
.avatar-lg { width: 56px; height: 56px; font-size: 1.1rem; }
.avatar-xl { width: 88px; height: 88px; font-size: 1.8rem; }
.share-link { display: inline-flex; align-items: center; gap: 0.35rem; margin-left: auto; color: var(--text-dim); transition: color var(--dur) var(--ease); }
.share-link:hover { color: var(--accent); }
.share-link svg { width: 13px; height: 13px; }

.translations {
    display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap;
    margin-top: 0.9rem; font-size: var(--step--1);
}
.translations ul { display: flex; gap: 0.9rem; list-style: none; margin: 0; padding: 0; }
.translations a { color: var(--text-dim); border-bottom: 1px solid var(--border-strong); transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease); }
.translations a:hover { color: var(--accent); border-color: var(--accent); }

.article-media {
    width: min(100% - 2 * var(--gap), 1180px);
    margin: 0 auto clamp(2rem, 5vw, 3.5rem);
}
.article-media img { width: 100%; border-radius: var(--radius); border: 1px solid var(--border); }
.article-media figcaption, .article-body figcaption {
    margin-top: 0.8rem; text-align: center;
    font-size: 0.78rem; color: var(--text-faint); font-family: var(--font-mono);
}

.article-body { font-size: 1.02rem; line-height: 1.75; }
.article-body > * { margin-block: 0 1.4em; }
.article-body > h2 { font-size: var(--step-2); margin-block: 2.2em 0.7em; }
.article-body > h3 { font-size: var(--step-1); margin-block: 1.9em 0.6em; }
.article-body > h4 { font-size: var(--step-0); margin-block: 1.7em 0.5em; letter-spacing: 0; }
.article-body a {
    color: var(--accent);
    border-bottom: 1px solid var(--accent-soft);
    transition: border-color var(--dur) var(--ease);
}
.article-body a:hover { border-bottom-color: var(--accent); }
.article-body ul, .article-body ol { padding-left: 1.3em; }
.article-body li { margin-bottom: 0.4em; }
.article-body li::marker { color: var(--text-faint); }
.article-body hr { border: 0; border-top: 1px solid var(--border); margin-block: 2.5em; }
.article-body img { border-radius: var(--radius); }

.article-body blockquote {
    margin-inline: 0;
    padding: 0.2em 0 0.2em 1.4em;
    border-left: 2px solid var(--accent);
    color: var(--text-dim);
    font-size: var(--step-1);
    line-height: 1.5;
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body table {
    width: 100%; border-collapse: collapse; font-size: var(--step--1);
    display: block; overflow-x: auto;
}
.article-body th, .article-body td { padding: 0.65rem 0.9rem; border-bottom: 1px solid var(--border); text-align: left; }
.article-body th {
    font-family: var(--font-mono); font-size: 0.72rem;
    text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-dim);
    border-bottom-color: var(--border-strong);
}
.article-body tbody tr:hover { background: var(--surface-2); }

.article-foot { margin-top: clamp(2.5rem, 5vw, 4rem); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; margin: 0 0 2.5rem; padding: 0; }
.tag-list a {
    font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-dim);
    padding: 0.3rem 0.6rem; border: 1px solid var(--border); border-radius: var(--radius);
    transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tag-list a:hover { color: var(--accent); border-color: var(--accent); }

.author-box {
    display: flex; gap: 1.2rem; align-items: flex-start;
    padding: 1.6rem; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface);
}
.author-name { font-weight: 600; }
.author-name:hover { color: var(--accent); }
.author-bio { margin: 0.4rem 0 0.6rem; color: var(--text-dim); font-size: var(--step--1); }

.post-nav {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
    margin-top: 2.5rem; padding-top: 1.6rem; border-top: 1px solid var(--border);
}
.post-nav-item {
    display: flex; gap: 0.6rem; align-items: baseline;
    font-size: var(--step--1); color: var(--text-dim);
    transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.post-nav-item:hover { color: var(--accent); transform: translateX(-3px); }
.post-nav-next { text-align: right; justify-content: flex-end; flex-direction: row-reverse; }
.post-nav-next:hover { transform: translateX(3px); }

.read-next { padding-block: var(--section) 0; }

.archive-head { padding-block: clamp(3rem, 7vw, 5rem) 0; }
.archive-count { font-size: var(--step--1); color: var(--text-faint); margin-top: 1rem; }
.author-head { display: flex; gap: clamp(1.2rem, 3vw, 2rem); align-items: flex-start; }
.author-links { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; font-size: var(--step--1); }

.social-links { display: inline-flex; align-items: center; gap: 0.8rem; }
.social-links a { color: var(--text-faint); transition: color var(--dur) var(--ease), transform var(--dur) var(--ease); }
.social-links a:hover { color: var(--accent); transform: translateY(-2px); }
.social-links svg { width: 16px; height: 16px; }
.social-fallback { font-size: 0.7rem; font-family: var(--font-mono); }

.project-section { padding-block: var(--section) 0; }
.project-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.project {
    display: grid; grid-template-columns: 3rem 1fr auto; gap: 1.2rem;
    padding: 1.6rem 0; border-bottom: 1px solid var(--border);
    transition: background var(--dur) var(--ease);
}
.project:hover { background: var(--surface-2); }
.project-idx { color: var(--accent); font-size: 0.75rem; }
.project-title { font-size: var(--step-1); }
.project-title a:hover { color: var(--accent); }
.project-desc { color: var(--text-dim); font-size: var(--step--1); margin: 0.5rem 0 0.8rem; max-width: 62ch; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; list-style: none; margin: 0; padding: 0; }
.project-tags li { font-size: 0.68rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.1em; }
.project-date { font-size: 0.75rem; color: var(--text-faint); }

.error-page { padding-block: clamp(5rem, 14vw, 10rem); text-align: center; }
.error-page .masthead-lead { margin-inline: auto; }
.error-page .btn { margin-top: 2rem; }

/* 10. Content — code & Koenig cards ---------------------------------------- */

code, kbd {
    font-size: 0.88em;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 0.12em 0.36em;
}
pre {
    margin-block: 0 1.6em;
    padding: 1.1rem 1.2rem;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 0.84rem;
    line-height: 1.6;
    tab-size: 4;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; }

/* Syntax highlighting — quiet, low-contrast, no terminal cosplay */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: var(--text-faint); font-style: italic; }
.token.punctuation { color: var(--text-dim); }
.token.property, .token.tag, .token.constant, .token.symbol, .token.deleted { color: var(--accent); }
.token.boolean, .token.number { color: #B4885C; }
.token.selector, .token.attr-name, .token.string, .token.char, .token.builtin, .token.inserted { color: #7C9E76; }
.token.operator, .token.entity, .token.url { color: var(--text-dim); }
.token.atrule, .token.attr-value, .token.keyword { color: var(--accent); font-weight: 500; }
.token.function, .token.class-name { color: #A6849E; }
.token.regex, .token.important, .token.variable { color: #B4885C; }
[data-theme="light"] .token.boolean, [data-theme="light"] .token.number, [data-theme="light"] .token.regex,
[data-theme="light"] .token.important, [data-theme="light"] .token.variable { color: #8A5A28; }
[data-theme="light"] .token.selector, [data-theme="light"] .token.attr-name, [data-theme="light"] .token.string,
[data-theme="light"] .token.char, [data-theme="light"] .token.builtin, [data-theme="light"] .token.inserted { color: #476B41; }
[data-theme="light"] .token.function, [data-theme="light"] .token.class-name { color: #7A5570; }

.kg-card { margin-block: 0 1.6em; }
.kg-image { width: 100%; }
.kg-width-wide { width: min(100vw - 2 * var(--gap), 940px); margin-inline: calc(50% - min(50vw - var(--gap), 470px)); }
.kg-width-full { width: min(100vw - 2 * var(--gap), 1400px); margin-inline: calc(50% - min(50vw - var(--gap), 700px)); }

.kg-gallery-container { display: flex; flex-direction: column; gap: 0.6rem; }
.kg-gallery-row { display: flex; gap: 0.6rem; }
.kg-gallery-image img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }

.kg-bookmark-card a.kg-bookmark-container {
    display: flex; text-decoration: none; color: inherit;
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface); overflow: hidden;
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.kg-bookmark-card a.kg-bookmark-container:hover { border-color: var(--accent); transform: translateY(-2px); }
.kg-bookmark-content { display: flex; flex-direction: column; gap: 0.4rem; padding: 1.1rem; flex-grow: 1; }
.kg-bookmark-title { font-weight: 600; font-size: var(--step-0); }
.kg-bookmark-description { color: var(--text-dim); font-size: var(--step--1); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.kg-bookmark-metadata { display: flex; align-items: center; gap: 0.5rem; margin-top: auto; font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); }
.kg-bookmark-icon { width: 16px; height: 16px; }
.kg-bookmark-thumbnail { flex: 0 0 33%; }
.kg-bookmark-thumbnail img { width: 100%; height: 100%; object-fit: cover; }

.kg-callout-card {
    display: flex; gap: 0.9rem; padding: 1.1rem 1.2rem;
    background: var(--surface-2); border-left: 2px solid var(--accent); border-radius: var(--radius);
}
.kg-callout-card-accent { background: var(--accent-soft); }
.kg-callout-text { font-size: var(--step--1); }

.kg-toggle-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.2rem; }
.kg-toggle-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.kg-toggle-heading-text { margin: 0; font-size: var(--step-0); }
.kg-toggle-card-icon { background: none; border: 0; cursor: pointer; color: var(--text-dim); width: 18px; }
.kg-toggle-card-icon svg { width: 12px; fill: none; stroke: currentColor; stroke-width: 1.5px; transition: transform 240ms var(--ease); }
.kg-toggle-card[data-kg-toggle-state="close"] .kg-toggle-content { display: none; }
.kg-toggle-card[data-kg-toggle-state="open"] .kg-toggle-card-icon svg { transform: rotate(180deg); }

.kg-button-card { display: flex; margin-block: 0 1.6em; }
.kg-button-card.kg-align-center { justify-content: center; }
.kg-btn {
    display: inline-flex; align-items: center; padding: 0.7rem 1.4rem;
    border: 1px solid var(--border-strong); border-radius: var(--radius);
    font-size: var(--step--1); transition: transform var(--dur) var(--ease);
}
.kg-btn:hover { transform: translateY(-2px); }
.kg-btn-accent { background: var(--accent); border-color: var(--accent); color: var(--bg); }

.kg-embed-card { display: flex; flex-direction: column; align-items: center; }
.kg-embed-card iframe { max-width: 100%; }
.fluid-width-video-wrapper { position: relative; overflow: hidden; padding-top: 56.25%; width: 100%; }
.fluid-width-video-wrapper iframe, .fluid-width-video-wrapper object, .fluid-width-video-wrapper embed {
    position: absolute; inset: 0; width: 100%; height: 100%;
}

.kg-header-card { padding: clamp(2rem, 5vw, 3.5rem) 1.5rem; text-align: center; background: var(--surface-2); border-radius: var(--radius); }
.kg-audio-card, .kg-file-card, .kg-product-card, .kg-nft-card, .kg-signup-card {
    border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface);
}
.kg-signup-card { padding: clamp(1.5rem, 4vw, 2.5rem); }

/* 11. Footer --------------------------------------------------------------- */

.site-footer {
    margin-top: var(--section);
    border-top: 1px solid var(--border);
    padding-block: clamp(2.5rem, 5vw, 4rem) 1.5rem;
}
.footer-grid {
    display: grid; gap: clamp(1.5rem, 4vw, 3rem);
    grid-template-columns: minmax(220px, 1.4fr) 1fr auto;
    align-items: start;
}
.footer-desc { max-width: 34ch; margin: 0.8rem 0 0; color: var(--text-dim); font-size: var(--step--1); }
.footer-nav .nav-list { flex-direction: column; gap: 0.4rem; }
.footer-nav .nav-item a { font-size: var(--step--1); }
.footer-side { display: flex; flex-direction: column; align-items: flex-end; gap: 1rem; }
.footer-legal {
    display: flex; align-items: center; gap: 0.6rem;
    margin-top: clamp(2rem, 5vw, 3.5rem); padding-top: 1.2rem;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono); font-size: 0.7rem; color: var(--text-faint); letter-spacing: 0.06em;
}
.footer-legal a:hover { color: var(--accent); }
.footer-sep { opacity: 0.4; }

/* 12. Responsive & motion -------------------------------------------------- */

@media (max-width: 860px) {
    .entry-link {
        grid-template-columns: 2.6rem minmax(0, 1fr);
        gap: 0.35rem 1rem;
    }
    .entry-meta {
        grid-column: 2; justify-content: flex-start;
        margin-top: 0.6rem; gap: 0.9rem; white-space: normal;
    }
    .lead-link { max-width: none; }
}

@media (max-width: 780px) {
    .primary-nav, .header-tools { display: none; }
    .mobile-nav { display: block; }
    .footer-grid { grid-template-columns: 1fr; }
    .spec { max-width: none; }
    .footer-side { align-items: flex-start; }
    .post-nav { grid-template-columns: 1fr; }
    .post-nav-next { text-align: left; justify-content: flex-start; flex-direction: row; }
    .author-head { flex-direction: column; }
    .project { grid-template-columns: 2rem 1fr; }
    .project-date { grid-column: 2; }
    .kg-width-wide, .kg-width-full { width: 100%; margin-inline: 0; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

@media print {
    .site-header, .site-footer, .cta, .read-next, .post-nav, .pagination { display: none; }
    body { background: #fff; color: #000; }
}

/* Language switcher inside an article */
.translations a[aria-current] { color: var(--text); }
.translations li { display: inline-flex; }

/* Brand logo (Settings → Design & branding → Logo) */
.brand-logo { height: 26px; width: auto; max-width: 190px; object-fit: contain; }
.footer-brand .brand-logo { height: 24px; }

/* --- Members: account controls, tiers, paywall ---------------------------- */

.member-actions { display: inline-flex; align-items: center; gap: 0.8rem; }
.member-link {
    font-size: var(--step--1); color: var(--text-dim);
    border-bottom: 1px solid transparent;
    transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.member-link:hover { color: var(--accent); border-bottom-color: var(--accent); }
.member-btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 0.45rem 0.95rem;
    background: var(--accent); color: var(--bg);
    border: 1px solid var(--accent); border-radius: var(--radius);
    font-size: var(--step--1); white-space: nowrap;
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.member-btn:hover { transform: translateY(-2px); opacity: 0.92; }
.mobile-nav-panel .member-actions { margin-top: 1.2rem; gap: 1rem; }
.label-lock { color: var(--text-dim); border: 1px solid var(--border); padding: 0.1rem 0.45rem; border-radius: var(--radius); }

.tiers-section { padding-block: var(--section) 0; }
.tier-grid {
    display: grid; gap: clamp(1rem, 2.5vw, 1.6rem);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.tier {
    display: flex; flex-direction: column; gap: 1rem;
    padding: clamp(1.4rem, 3vw, 2rem);
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface);
    transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.tier:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.tier-highlight { border-color: var(--accent); }
.tier-name { font-size: var(--step-1); }
.tier-desc { margin: 0.5rem 0 0; color: var(--text-dim); font-size: var(--step--1); }
.tier-price { display: flex; align-items: baseline; gap: 0.4rem; margin: 0; }
.tier-amount { font-family: var(--font-head); font-size: var(--step-3); letter-spacing: -0.03em; }
.tier-interval { font-size: var(--step--1); color: var(--text-faint); }
.tier-benefits { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; font-size: var(--step--1); color: var(--text-dim); }
.tier-benefits li { display: flex; gap: 0.6rem; }
.tier-benefits li::before { content: "—"; color: var(--accent); }
.tier-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 0.7rem; margin-top: auto; padding-top: 0.6rem; }

.paywall {
    margin-block: 2rem;
    padding: clamp(1.6rem, 4vw, 2.4rem);
    border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface); text-align: center;
}
.paywall-title { font-size: var(--step-2); margin: 0.6rem 0 1.4rem; }
.paywall-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: center; }

.account-details { display: grid; grid-template-columns: auto 1fr; gap: 0.5rem 1.4rem; margin: 0 0 1.6rem; font-size: var(--step--1); }
.account-details dt { color: var(--text-faint); font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; }
.account-details dd { margin: 0; }
.subscription { padding: 1.4rem; border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 1.4rem; }
.subscription-tier { font-size: var(--step-1); margin-bottom: 1rem; }
.account-actions { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; }

@media (max-width: 780px) {
    .paywall-actions, .tier-actions { align-items: stretch; }
}

/* --- Masthead background image (homepage custom setting) ------------------ */

.masthead { position: relative; }
.masthead > .wrap { position: relative; z-index: 1; }
.masthead-has-image { padding-block: clamp(4.5rem, 12vw, 9rem) 0; }
.masthead-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.masthead-bg img { width: 100%; height: 100%; object-fit: cover; }
.masthead-bg::after {
    content: ""; position: absolute; inset: 0;
    background:
        linear-gradient(to bottom, transparent 40%, var(--bg) 100%),
        linear-gradient(to right, var(--bg) 0%, color-mix(in srgb, var(--bg) 88%, transparent) 42%, color-mix(in srgb, var(--bg) 45%, transparent) 100%);
}

/* --- Buttons inside post content --------------------------------------------
   .article-body a sets a link colour and underline; without these overrides an
   accent-filled button would render accent text on an accent background. */

.article-body .member-btn,
.article-body .kg-btn-accent { color: var(--bg); border-bottom: 0; }
.article-body .kg-btn { border-bottom: 0; }
.article-body .member-link {
    color: var(--text-dim);
    border-bottom: 1px solid transparent;
}
.article-body .member-link:hover { color: var(--accent); border-bottom-color: var(--accent); }

/* Publication logo in the homepage masthead (Design & branding → Logo) */
.masthead-logo { line-height: 0; }
.masthead-logo img {
    height: clamp(46px, 7vw, 92px);
    width: auto;
    max-width: min(100%, 520px);
    object-fit: contain;
    object-position: left center;
}

/* Sign-out / billing are buttons, not links: they need script to do anything */
.member-link-btn { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; font-size: var(--step--1); }
button.member-btn { cursor: pointer; font: inherit; font-size: var(--step--1); }