/* =========================================================================
   Kvanta — popular science, drawn as orbits.
   RTL-first, logical properties, no framework. Prefix: kv-
   ========================================================================= */

/* ---------- Fonts (self-hosted, subset per script) ---------- */
@font-face { font-family: "Noto Sans Hebrew"; src: url(../fonts/noto-sans-hebrew-hebrew.woff2) format("woff2"); font-weight: 100 900; font-display: swap; unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F; }
@font-face { font-family: "Noto Sans Hebrew"; src: url(../fonts/noto-sans-hebrew-latin.woff2) format("woff2"); font-weight: 100 900; font-display: swap; 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: "Libertinus Serif"; src: url(../fonts/libertinus-hebrew-400.woff2) format("woff2"); font-weight: 400; font-display: swap; unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F; }
@font-face { font-family: "Libertinus Serif"; src: url(../fonts/libertinus-hebrew-700.woff2) format("woff2"); font-weight: 700; font-display: swap; unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F; }
@font-face { font-family: "Libertinus Serif"; src: url(../fonts/libertinus-latin-400.woff2) format("woff2"); font-weight: 400; font-display: swap; 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: "Libertinus Serif"; src: url(../fonts/libertinus-latin-700.woff2) format("woff2"); font-weight: 700; font-display: swap; 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: "Libertinus Serif"; src: url(../fonts/libertinus-greek-400.woff2) format("woff2"); font-weight: 400; font-display: swap; unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF; }
@font-face { font-family: "Libertinus Serif"; src: url(../fonts/libertinus-greek-700.woff2) format("woff2"); font-weight: 700; font-display: swap; unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF; }
@font-face { font-family: "Libertinus Serif"; src: url(../fonts/libertinus-latin-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; 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: "Libertinus Serif"; src: url(../fonts/libertinus-greek-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; font-display: swap; unicode-range: U+0370-0377, U+037A-037F, U+0384-038A, U+038C, U+038E-03A1, U+03A3-03FF; }
@font-face { font-family: "Suez One"; src: url(../fonts/suez-one-hebrew.woff2) format("woff2"); font-weight: 400; font-display: swap; unicode-range: U+0307-0308, U+0590-05FF, U+200C-2010, U+20AA, U+25CC, U+FB1D-FB4F; }
@font-face { font-family: "Suez One"; src: url(../fonts/suez-one-latin.woff2) format("woff2"); font-weight: 400; font-display: swap; 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; }

/* ---------- Tokens ---------- */
:root {
    --kv-night: #1B1F4B;          /* primary: deep space indigo */
    --kv-night-2: #12153A;
    --kv-night-3: #262B63;
    --kv-amber: #F2A541;          /* secondary: starlight amber */
    --kv-amber-soft: #FFD9A0;
    --kv-star: #FFF6E6;

    --kv-paper: #FAF7F0;
    --kv-surface: #FFFFFF;
    --kv-text: #262945;
    --kv-muted: #585B78;
    --kv-heading: #1B1F4B;
    --kv-line: #E3DED1;
    --kv-line-strong: #CFC8B6;
    --kv-link: #2E3492;
    --kv-link-line: #F2A541;
    --kv-amber-ink: #8A4C00;      /* amber as text on light backgrounds */
    --kv-tint: #F1EEE4;
    --kv-focus: #1B1F4B;          /* indigo ring on paper (14:1); amber on night surfaces below */
    --kv-shadow: 0 1px 2px rgba(27, 31, 75, .06), 0 8px 24px rgba(27, 31, 75, .07);

    --kv-font-body: "Noto Sans Hebrew", "Segoe UI", Arial, sans-serif;
    --kv-font-title: "Libertinus Serif", "Noto Serif Hebrew", "Times New Roman", serif;
    --kv-font-logo: "Suez One", "Libertinus Serif", serif;

    --kv-max: 1200px;
    --kv-gutter: clamp(16px, 4vw, 32px);
    --kv-radius: 14px;
    color-scheme: light;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-mode="light"]) {
        --kv-paper: #0D0F2B;
        --kv-surface: #161941;
        --kv-text: #E4E2EE;
        --kv-muted: #A7A9C6;
        --kv-heading: #FFF6E6;
        --kv-line: #2A2E5E;
        --kv-line-strong: #3A3F78;
        --kv-link: #FFC979;
        --kv-link-line: rgba(242, 165, 65, .55);
        --kv-amber-ink: #F2A541;
        --kv-tint: #1C2050;
        --kv-focus: #F2A541;
        --kv-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .28);
        color-scheme: dark;
    }
}
:root[data-mode="dark"] {
    --kv-paper: #0D0F2B;
    --kv-surface: #161941;
    --kv-text: #E4E2EE;
    --kv-muted: #A7A9C6;
    --kv-heading: #FFF6E6;
    --kv-line: #2A2E5E;
    --kv-line-strong: #3A3F78;
    --kv-link: #FFC979;
    --kv-link-line: rgba(242, 165, 65, .55);
    --kv-amber-ink: #F2A541;
    --kv-tint: #1C2050;
    --kv-focus: #F2A541;
    --kv-shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 28px rgba(0, 0, 0, .28);
    color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 24px; }
body {
    margin: 0;
    background: var(--kv-paper);
    color: var(--kv-text);
    font-family: var(--kv-font-body);
    font-size: 1.0625rem;
    line-height: 1.75;
    text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--kv-link); text-decoration-color: var(--kv-link-line); text-decoration-thickness: 2px; text-underline-offset: 4px; }
a:hover { text-decoration-color: currentColor; }
h1, h2, h3, h4 { font-family: var(--kv-font-title); color: var(--kv-heading); line-height: 1.2; font-weight: 700; margin: 0 0 .5em; }
p { margin: 0 0 1em; }
.kv-header, .kv-hero, .kv-pagehead, .kv-article__head, .kv-footer, .kv-authorbox, .kv-strip { --kv-focus: #F2A541; }
:focus-visible { outline: 3px solid var(--kv-focus); outline-offset: 3px; border-radius: 4px; }
.kv-sr { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.kv-skip { position: absolute; inset-inline-start: 12px; top: -60px; z-index: 100; background: var(--kv-amber); color: var(--kv-night); padding: 10px 18px; border-radius: 8px; font-weight: 700; text-decoration: none; }
.kv-skip:focus { top: 12px; }
.kv-wrap { width: 100%; max-width: var(--kv-max); margin-inline: auto; padding-inline: var(--kv-gutter); }
.kv-icon { flex: none; vertical-align: middle; }

/* ---------- Buttons ---------- */
.kv-btn {
    display: inline-flex; align-items: center; gap: .5em; min-height: 46px;
    padding: .6em 1.25em; border: 2px solid var(--kv-amber); border-radius: 999px;
    background: var(--kv-amber); color: var(--kv-night);
    font: 700 1rem/1.2 var(--kv-font-body); text-decoration: none; cursor: pointer;
    transition: background-color .2s, color .2s, transform .2s;
}
.kv-btn:hover { background: var(--kv-amber-soft); border-color: var(--kv-amber-soft); }
.kv-btn .kv-icon { transform: translateX(0); transition: transform .2s; }
.kv-btn:hover .kv-icon[viewBox] { transform: translateX(-3px); }
.kv-btn--ghost { background: transparent; color: var(--kv-star); border-color: rgba(255, 246, 230, .45); }
.kv-btn--ghost:hover { background: rgba(255, 246, 230, .1); border-color: var(--kv-star); color: var(--kv-star); }
.kv-more { display: inline-flex; align-items: center; gap: .4em; font-weight: 700; text-decoration: none; color: var(--kv-link); min-height: 40px; }
.kv-more:hover { text-decoration: underline; text-decoration-color: var(--kv-link-line); }

/* ---------- Header ---------- */
.kv-header { background: var(--kv-night-2); color: var(--kv-star); position: relative; z-index: 20; border-bottom: 1px solid rgba(242, 165, 65, .25); }
.kv-header__bar { display: flex; align-items: center; gap: 24px; min-height: 76px; }
.kv-brand { display: inline-flex; align-items: center; gap: 12px; color: var(--kv-star); text-decoration: none; flex: none; }
.kv-brand__mark { width: 44px; height: 44px; }
.kv-brand__text { display: flex; flex-direction: column; line-height: 1; }
.kv-brand__name { font-family: var(--kv-font-logo); font-size: 1.85rem; letter-spacing: .01em; line-height: 1.05; }
.kv-brand__tag { font-size: .78rem; color: rgba(255, 246, 230, .74); margin-top: 4px; letter-spacing: .02em; }
.kv-nav { margin-inline-start: auto; }
.kv-nav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 2px 4px; }
.kv-nav__list a {
    display: flex; align-items: center; min-height: 44px; padding: 0 12px; border-radius: 999px;
    color: rgba(255, 246, 230, .9); text-decoration: none; font-size: .95rem; font-weight: 500;
}
.kv-nav__list a:hover { background: rgba(255, 246, 230, .08); color: var(--kv-star); }
.kv-nav__list .current-menu-item > a, .kv-nav__list .current-menu-parent > a, .kv-nav__list .current-post-parent > a { color: var(--kv-amber); box-shadow: inset 0 -2px 0 var(--kv-amber); border-radius: 0; }
.kv-tools { display: flex; gap: 4px; }
.kv-tool {
    display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
    border: 1px solid rgba(255, 246, 230, .2); background: transparent; color: var(--kv-star); cursor: pointer; padding: 0;
}
.kv-tool:hover, .kv-tool[aria-expanded="true"] { background: rgba(255, 246, 230, .1); border-color: rgba(255, 246, 230, .45); }
.kv-tool__sun, .kv-tool__close { display: none; }
:root[data-mode="dark"] .kv-tool__sun { display: inline; }
:root[data-mode="dark"] .kv-tool__moon { display: none; }
@media (prefers-color-scheme: dark) {
    :root:not([data-mode="light"]) .kv-tool__sun { display: inline; }
    :root:not([data-mode="light"]) .kv-tool__moon { display: none; }
}
.kv-tool--menu { display: none; }
.kv-tool--menu[aria-expanded="true"] .kv-tool__open { display: none; }
.kv-tool--menu[aria-expanded="true"] .kv-tool__close { display: inline; }
.kv-search { background: var(--kv-night); padding-block: 18px; border-top: 1px solid rgba(255, 246, 230, .1); }
.kv-search[hidden] { display: none; }

.kv-searchform { display: flex; gap: 8px; max-width: 640px; }
.kv-searchform__input {
    flex: 1; min-width: 0; min-height: 48px; padding: 0 16px; border-radius: 999px;
    border: 1px solid var(--kv-line-strong); background: var(--kv-surface); color: var(--kv-text); font: inherit; font-size: 1rem;
}
.kv-search .kv-searchform__input { border-color: rgba(255, 246, 230, .35); background: var(--kv-night-2); color: var(--kv-star); }
.kv-searchform__input::placeholder { color: var(--kv-muted); opacity: 1; }
.kv-search .kv-searchform__input::placeholder { color: rgba(255, 246, 230, .66); }

@media (max-width: 1060px) {
    .kv-tool--menu { display: inline-grid; }
    .kv-header__bar { flex-wrap: wrap; }
    .kv-tools { margin-inline-start: auto; }
    .kv-nav { order: 3; flex-basis: 100%; display: none; padding-block: 4px 16px; margin: 0; }
    .kv-nav.is-open { display: block; }
    .kv-nav__list { flex-direction: column; }
    .kv-nav__list a { border-radius: 10px; font-size: 1.05rem; }
    .kv-nav__list .current-menu-item > a { box-shadow: inset -3px 0 0 var(--kv-amber); }
}
@media (max-width: 420px) {
    .kv-brand__tag { display: none; }
    .kv-header__bar { gap: 12px; }
}

/* ---------- Night-sky texture (heads) ---------- */
.kv-hero, .kv-pagehead, .kv-article__head { position: relative; background: var(--kv-night); color: var(--kv-star); overflow: hidden; isolation: isolate; }
.kv-hero__stars {
    position: absolute; inset: 0; z-index: -1; pointer-events: none; opacity: .75;
    background-image:
        radial-gradient(1.2px 1.2px at 12% 22%, #FFF6E6 50%, transparent 51%),
        radial-gradient(1px 1px at 28% 68%, #FFF6E6 50%, transparent 51%),
        radial-gradient(1.4px 1.4px at 46% 14%, #FFD9A0 50%, transparent 51%),
        radial-gradient(1px 1px at 63% 82%, #FFF6E6 50%, transparent 51%),
        radial-gradient(1.2px 1.2px at 78% 34%, #FFF6E6 50%, transparent 51%),
        radial-gradient(1px 1px at 90% 74%, #FFD9A0 50%, transparent 51%),
        radial-gradient(1px 1px at 6% 88%, #FFF6E6 50%, transparent 51%),
        radial-gradient(1.3px 1.3px at 37% 44%, #FFF6E6 50%, transparent 51%),
        radial-gradient(900px 420px at 85% 120%, rgba(242, 165, 65, .14), transparent 70%),
        radial-gradient(700px 500px at 0% -10%, rgba(80, 92, 200, .28), transparent 70%);
    background-size: 340px 260px, 340px 260px, 340px 260px, 340px 260px, 340px 260px, 340px 260px, 340px 260px, 340px 260px, 100% 100%, 100% 100%;
}
.kv-eyebrow { display: inline-flex; align-items: center; gap: .5em; margin: 0 0 14px; color: var(--kv-amber); font-weight: 700; font-size: .92rem; letter-spacing: .02em; }

/* ---------- Homepage hero + orbit ---------- */
.kv-hero__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 560px); align-items: center; gap: clamp(24px, 4vw, 64px); padding-block: clamp(40px, 6vw, 84px); }
.kv-hero__title { color: var(--kv-star); font-size: clamp(2.05rem, 1.3rem + 2.6vw, 3.35rem); line-height: 1.12; margin-bottom: 18px; text-wrap: balance; }
.kv-hero__lead { font-size: clamp(1.08rem, 1rem + .3vw, 1.25rem); color: rgba(255, 246, 230, .86); max-width: 34em; }
.kv-hero__facts { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 24px 0 28px; padding: 16px 0 0; border-top: 1px solid rgba(255, 246, 230, .16); color: rgba(255, 246, 230, .8); font-size: .95rem; }
.kv-hero__facts strong { display: block; font-family: var(--kv-font-title); font-size: 2rem; line-height: 1; color: var(--kv-amber); font-weight: 700; margin-bottom: 4px; }
.kv-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.kv-orbit__stage { position: relative; width: 100%; max-width: 560px; aspect-ratio: 1; margin-inline: auto; }
.kv-orbit__svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.kv-orbit__ring { fill: none; stroke: rgba(255, 246, 230, .26); stroke-width: .28; }
.kv-orbit__ring--1 { stroke-dasharray: .9 1.1; stroke: rgba(255, 246, 230, .32); }
.kv-orbit__ring--2 { stroke: rgba(242, 165, 65, .34); }
.kv-orbit__axis { stroke: rgba(242, 165, 65, .45); stroke-width: .22; stroke-dasharray: .5 .7; }
.kv-orbit__tick { stroke: var(--kv-amber); stroke-width: .3; }
.kv-orbit__glow { fill: rgba(242, 165, 65, .16); }
.kv-orbit__core { fill: var(--kv-amber); }
.kv-orbit__probe { fill: var(--kv-star); }
.kv-orbit__spin { transform-origin: 50px 50px; animation: kv-spin 60s linear infinite; }
@keyframes kv-spin { to { transform: rotate(-360deg); } }
.kv-orbit__center { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: flex; flex-direction: column; align-items: center; color: var(--kv-night); line-height: 1; pointer-events: none; }
.kv-orbit__num { font-family: var(--kv-font-title); font-size: clamp(1.3rem, 2.4vw, 1.9rem); font-weight: 700; }
.kv-orbit__unit { font-size: .66rem; font-weight: 700; margin-top: 2px; }
.kv-orbit__label { position: absolute; left: var(--x); top: 50%; transform: translate(-50%, 6px); font-size: .7rem; color: var(--kv-amber); font-weight: 700; letter-spacing: .04em; white-space: nowrap; }
.kv-body {
    position: absolute; left: var(--x); top: var(--y); transform: translate(-50%, -9px);
    display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1px;
    color: var(--kv-star); text-decoration: none; line-height: 1.25; max-width: 8.5em; padding: 0 4px 4px; border-radius: 10px;
}
.kv-body__dot { width: 18px; height: 18px; border-radius: 50%; background: var(--kv-star); box-shadow: 0 0 0 4px rgba(255, 246, 230, .12); margin-bottom: 6px; transition: transform .25s, background-color .25s; }
.kv-body--r0 .kv-body__dot { width: 13px; height: 13px; margin-top: 2px; background: var(--kv-amber-soft); }
.kv-body--r2 .kv-body__dot { width: 22px; height: 22px; margin-top: -2px; background: linear-gradient(135deg, #FFF6E6, #9EA6E8); }
.kv-body__name { font-weight: 700; font-size: .92rem; text-shadow: 0 1px 8px var(--kv-night); }
.kv-body__count { font-size: .74rem; color: var(--kv-amber-soft); }
.kv-body:hover .kv-body__dot, .kv-body:focus-visible .kv-body__dot { transform: scale(1.35); background: var(--kv-amber); }
.kv-body:hover .kv-body__name { text-decoration: underline; text-decoration-color: var(--kv-amber); text-underline-offset: 4px; }
.kv-orbit-list { display: none; }

@media (max-width: 900px) {
    .kv-hero__grid { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
    .kv-orbit__stage { max-width: 300px; }
    .kv-body__name, .kv-body__count, .kv-orbit__label { display: none; }
    .kv-body { pointer-events: none; padding: 0; }
    .kv-body__dot { margin: 0; }
    .kv-body:focus { outline: none; }
    .kv-orbit-list { display: grid; gap: 14px; list-style: none; margin: 20px 0 0; padding: 0; }
    .kv-orbit-list__label { display: block; font-size: .8rem; font-weight: 700; color: var(--kv-amber); margin-bottom: 6px; }
    .kv-orbit-list ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
    .kv-orbit-list a { display: inline-flex; align-items: center; gap: .3em; min-height: 42px; padding: 0 14px; border-radius: 999px; border: 1px solid rgba(255, 246, 230, .3); color: var(--kv-star); text-decoration: none; font-size: .95rem; }
    .kv-orbit-list a span { color: var(--kv-amber-soft); font-size: .82rem; }
}

/* ---------- Sections ---------- */
.kv-section { padding-block: clamp(40px, 5vw, 72px); }
.kv-section__head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.kv-section__title { font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.25rem); margin: 0; position: relative; padding-inline-start: 30px; }
.kv-section__title::before {
    content: ""; position: absolute; inset-inline-start: 0; top: .42em; width: 18px; height: 18px; border-radius: 50%;
    border: 2px solid var(--kv-amber); box-shadow: inset 0 0 0 4px var(--kv-paper), inset 0 0 0 9px var(--kv-amber);
}

/* ---------- Equation strip ---------- */
.kv-strip {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    min-height: 36px; padding: 0 14px; background: var(--kv-night); color: var(--kv-star);
    font-size: .8rem; font-weight: 700; letter-spacing: .02em;
}
.kv-strip__cat a { color: inherit; text-decoration: none; }
.kv-strip__cat a:hover { text-decoration: underline; text-decoration-color: var(--kv-amber); }
.kv-strip__eq { font-family: var(--kv-font-title); font-style: italic; font-weight: 400; font-size: 1.06rem; color: var(--kv-amber); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; unicode-bidi: isolate; letter-spacing: .01em; }
.kv-strip__eq sup, .kv-strip__eq sub { font-size: .66em; line-height: 0; }
.kv-strip--head { background: transparent; padding: 0; justify-content: flex-start; gap: 18px; margin-bottom: 14px; font-size: .9rem; }
.kv-strip--head .kv-strip__cat { display: inline-flex; align-items: center; min-height: 32px; padding: 0 14px; border-radius: 999px; background: var(--kv-amber); color: var(--kv-night); }
.kv-strip--head .kv-strip__cat a:hover { text-decoration-color: var(--kv-night); }
.kv-strip--head .kv-strip__eq { font-size: 1.2rem; }

/* ---------- Cards ---------- */
.kv-grid { display: grid; gap: clamp(18px, 2.4vw, 28px); }
.kv-grid--3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.kv-card { display: flex; flex-direction: column; background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius); overflow: hidden; box-shadow: var(--kv-shadow); position: relative; transition: transform .2s, box-shadow .2s; }
.kv-card:hover { transform: translateY(-3px); box-shadow: 0 2px 4px rgba(27, 31, 75, .08), 0 16px 34px rgba(27, 31, 75, .12); }
.kv-card__media { aspect-ratio: 3 / 2; overflow: hidden; background: var(--kv-tint); }
.kv-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.kv-card__body { display: flex; flex-direction: column; flex: 1; padding: 18px 20px 20px; }
.kv-card__title { font-size: 1.3rem; line-height: 1.3; margin-bottom: 10px; }
.kv-card__title a { color: var(--kv-heading); text-decoration: none; }
.kv-card__title a::after { content: ""; position: absolute; inset: 0; z-index: 1; }
.kv-card__title a:hover { text-decoration: underline; text-decoration-color: var(--kv-amber); text-decoration-thickness: 2px; }
.kv-card:focus-within { outline: 3px solid var(--kv-focus); outline-offset: 3px; }
.kv-card__title a:focus-visible { outline: none; }
.kv-card .kv-strip a { position: relative; z-index: 2; }
.kv-card__excerpt { color: var(--kv-muted); font-size: .97rem; line-height: 1.65; margin-bottom: 14px; }
.kv-card__meta { margin: auto 0 0; display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .84rem; color: var(--kv-muted); }
.kv-card__meta > * + *::before { content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--kv-amber); margin-inline-end: 14px; vertical-align: middle; transform: translateY(-1px); }

.kv-latest { display: grid; gap: clamp(18px, 2.4vw, 28px); }
.kv-card--lead { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); grid-template-rows: auto 1fr; }
.kv-card--lead .kv-strip { grid-column: 1 / -1; }
.kv-card--lead .kv-card__media { aspect-ratio: auto; min-height: 320px; }
.kv-card--lead .kv-card__body { padding: clamp(22px, 3vw, 40px); justify-content: center; }
.kv-card--lead .kv-card__title { font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.2rem); }
.kv-card--lead .kv-card__excerpt { font-size: 1.06rem; }
@media (max-width: 760px) {
    .kv-card--lead { display: flex; }
    .kv-card--lead .kv-card__media { aspect-ratio: 3 / 2; min-height: 0; }
}

/* ---------- Topic tiles ---------- */
.kv-topics { background: var(--kv-tint); border-block: 1px solid var(--kv-line); }
.kv-topic-grid { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.kv-topic { display: flex; flex-direction: column; background: var(--kv-surface); border: 1px solid var(--kv-line); border-radius: var(--kv-radius); overflow: hidden; position: relative; transition: transform .2s, box-shadow .2s; }
.kv-topic:hover { transform: translateY(-3px); box-shadow: var(--kv-shadow); }
.kv-topic .kv-strip { padding-inline: 12px; }
.kv-topic__media { background: var(--kv-night-3); aspect-ratio: 4 / 3; overflow: hidden; }
.kv-topic__media img { width: 100%; height: 100%; object-fit: cover; display: block; }
.kv-topic__body { padding: 14px 14px 16px; display: flex; flex-direction: column; flex: 1; }
.kv-topic__name { font-size: 1.25rem; margin-bottom: 6px; }
.kv-topic__name a { color: var(--kv-heading); text-decoration: none; }
.kv-topic__name a::after { content: ""; position: absolute; inset: 0; }
.kv-topic:hover .kv-topic__name a { text-decoration: underline; text-decoration-color: var(--kv-amber); }
.kv-topic:focus-within { outline: 3px solid var(--kv-focus); outline-offset: 3px; }
.kv-topic__name a:focus-visible { outline: none; }
.kv-topic__lead { font-size: .9rem; line-height: 1.6; color: var(--kv-muted); margin-bottom: 10px; }
.kv-topic__meta { margin: auto 0 0; font-size: .84rem; color: var(--kv-amber-ink); font-weight: 700; }
@media (max-width: 1140px) { .kv-topic-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) {
    .kv-topic-grid { gap: 12px; }
    .kv-topic__lead { display: none; }
    .kv-topic .kv-strip__eq { display: none; }
    .kv-topic__name { font-size: 1.08rem; }
    .kv-topic__body { padding: 10px 12px 12px; }
}

/* ---------- Writers ---------- */
.kv-writers { list-style: none; margin: 0; padding: 0; display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.kv-writer { display: flex; gap: 18px; align-items: flex-start; padding: 22px; border: 1px solid var(--kv-line); border-radius: var(--kv-radius); background: var(--kv-surface); }
.kv-writer__name { font-size: 1.35rem; margin-bottom: 2px; }
.kv-writer__count { color: var(--kv-amber-ink); font-weight: 700; font-size: .88rem; margin-bottom: 8px; }
.kv-writer__bio { color: var(--kv-muted); font-size: .97rem; margin: 0; }
.kv-avatar {
    flex: none; display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%;
    background: var(--kv-night); color: var(--kv-amber); font-family: var(--kv-font-title); font-weight: 700; font-size: 1.05rem;
    box-shadow: 0 0 0 2px var(--kv-paper), 0 0 0 3px rgba(242, 165, 65, .7);
}
.kv-avatar--lg { width: 64px; height: 64px; font-size: 1.45rem; }

/* ---------- Page head ---------- */
.kv-pagehead__inner { padding-block: clamp(28px, 4vw, 56px) clamp(32px, 4vw, 60px); position: relative; }
.kv-pagehead__title { color: var(--kv-star); font-size: clamp(2rem, 1.4rem + 2vw, 3rem); margin-bottom: 12px; text-wrap: balance; }
.kv-pagehead__lead { color: rgba(255, 246, 230, .86); font-size: 1.12rem; max-width: min(46em, 64%); margin: 0; }
@media (max-width: 760px) { .kv-pagehead__lead { max-width: none; } }
.kv-loop-lead { margin-bottom: clamp(18px, 2.4vw, 28px); }
.kv-pagehead__eq {
    position: absolute; left: var(--kv-gutter); bottom: 18px; margin: 0; /* physical: the element itself is dir=ltr */
    font-family: var(--kv-font-title); font-style: italic; font-size: clamp(1.6rem, 1rem + 3vw, 3.6rem); color: rgba(242, 165, 65, .28); white-space: nowrap; pointer-events: none;
}
.kv-pagehead__eq sup, .kv-pagehead__eq sub { font-size: .6em; }
@media (max-width: 760px) { .kv-pagehead__eq { display: none; } }

.kv-crumbs { font-size: .86rem; color: rgba(255, 246, 230, .75); margin-bottom: 16px; }
.kv-crumbs a { color: rgba(255, 246, 230, .92); text-decoration-color: rgba(242, 165, 65, .6); }
.kv-crumbs a:hover { color: var(--kv-amber); }

/* ---------- Chips / pagination / empty ---------- */
.kv-chips { margin-bottom: 28px; }
.kv-chips ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.kv-chip { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--kv-line-strong); background: var(--kv-surface); color: var(--kv-text); text-decoration: none; font-size: .93rem; }
.kv-chip:hover { border-color: var(--kv-amber); }
.kv-chip[aria-current="page"] { background: var(--kv-night); border-color: var(--kv-night); color: var(--kv-star); }
:root[data-mode="dark"] .kv-chip[aria-current="page"] { background: var(--kv-amber); border-color: var(--kv-amber); color: var(--kv-night); }
@media (prefers-color-scheme: dark) { :root:not([data-mode="light"]) .kv-chip[aria-current="page"] { background: var(--kv-amber); border-color: var(--kv-amber); color: var(--kv-night); } }
.kv-pagination { margin-top: 40px; }
.kv-pagination .nav-links { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.kv-pagination .page-numbers { display: inline-grid; place-items: center; min-width: 44px; min-height: 44px; padding: 0 14px; border-radius: 999px; border: 1px solid var(--kv-line-strong); text-decoration: none; color: var(--kv-text); background: var(--kv-surface); }
.kv-pagination .page-numbers.current { background: var(--kv-night); color: var(--kv-star); border-color: var(--kv-night); }
.kv-pagination a.page-numbers:hover { border-color: var(--kv-amber); }
.kv-empty, .kv-searchbox { margin-bottom: 32px; }
.kv-empty p { color: var(--kv-muted); }

/* ---------- Article ---------- */
.kv-article__headin { padding-block: clamp(24px, 3.5vw, 48px) clamp(80px, 9vw, 130px); max-width: 1000px; }
.kv-article__title { color: var(--kv-star); font-size: clamp(2rem, 1.3rem + 2.4vw, 3.2rem); line-height: 1.15; margin-bottom: 22px; text-wrap: balance; }
.kv-byline { display: flex; align-items: center; gap: 14px; }
.kv-byline .kv-avatar { box-shadow: 0 0 0 2px var(--kv-night), 0 0 0 3px rgba(242, 165, 65, .7); }
.kv-byline__text { display: flex; flex-direction: column; line-height: 1.45; }
.kv-byline__name { font-weight: 700; color: var(--kv-star); }
.kv-byline__meta { display: flex; flex-wrap: wrap; gap: 2px 16px; font-size: .88rem; color: rgba(255, 246, 230, .8); }
.kv-byline__meta .kv-icon { margin-top: -2px; }

.kv-figure { margin: calc(-1 * clamp(56px, 7vw, 100px)) auto 0; max-width: 1000px; position: relative; z-index: 2; }
.kv-figure img {
    display: block; width: 100%; max-width: 768px; margin-inline: auto; aspect-ratio: 16 / 9; object-fit: cover;
    border-radius: var(--kv-radius); box-shadow: 0 20px 50px rgba(18, 21, 58, .35); background: var(--kv-night-3);
}
.kv-figure::before {   /* orbit line the figure sits on: the "wide" frame beyond the image */
    content: ""; position: absolute; inset-inline: 0; top: 50%; height: 1px; z-index: -1;
    background: linear-gradient(90deg, transparent, rgba(242, 165, 65, .55) 18%, rgba(242, 165, 65, .55) 82%, transparent);
}

.kv-article__layout { display: grid; grid-template-columns: minmax(0, 70ch) 250px; justify-content: center; gap: 24px 64px; padding-block: clamp(32px, 4vw, 56px) 8px; align-items: start; }
.kv-article__body { grid-column: 1; grid-row: 1; }
.kv-toc { grid-column: 2; grid-row: 1; font-size: .92rem; border-inline-start: 2px solid var(--kv-line); padding-inline-start: 18px; }
.kv-toc__title { font-size: 1.05rem; font-family: var(--kv-font-body); color: var(--kv-amber-ink); margin-bottom: 10px; letter-spacing: .02em; }
.kv-toc__list { list-style: none; margin: 0; padding: 0; counter-reset: kvtoc; }
.kv-toc__list li { counter-increment: kvtoc; position: relative; padding-inline-start: 30px; margin-bottom: 8px; line-height: 1.45; }
.kv-toc__list li::before {
    content: counter(kvtoc); position: absolute; inset-inline-start: 0; top: 1px; width: 22px; height: 22px; border-radius: 50%;
    border: 1px solid var(--kv-line-strong); display: grid; place-items: center; font-size: .72rem; color: var(--kv-muted); font-weight: 700;
}
.kv-toc__list a { color: var(--kv-text); text-decoration: none; }
.kv-toc__list a:hover { color: var(--kv-link); text-decoration: underline; text-decoration-color: var(--kv-link-line); }
@media (max-width: 1060px) {
    .kv-article__layout { grid-template-columns: minmax(0, 70ch); }
    .kv-toc { grid-column: 1; grid-row: 1; border: 1px solid var(--kv-line); border-radius: var(--kv-radius); background: var(--kv-surface); padding: 16px 18px 10px; }
    .kv-article__body { grid-row: 2; }
}

.kv-authorbox { display: flex; gap: 18px; align-items: flex-start; padding: 24px; border-radius: var(--kv-radius); background: var(--kv-night); color: var(--kv-star); margin-top: 32px; }
.kv-authorbox .kv-avatar { box-shadow: 0 0 0 2px var(--kv-night), 0 0 0 3px var(--kv-amber); }
.kv-authorbox__kicker { margin: 0; font-size: .82rem; color: var(--kv-amber); font-weight: 700; }
.kv-prose .kv-authorbox__name, .kv-authorbox__name { font-size: 1.45rem; color: var(--kv-star); margin: 0 0 6px; }
.kv-prose .kv-authorbox__name::after { display: none; }
.kv-authorbox { margin-top: 40px; }
.kv-authorbox__bio { margin: 0; color: rgba(255, 246, 230, .86); font-size: .97rem; }
.kv-related { padding-top: 24px; }

/* ---------- Prose ---------- */
.kv-prose { max-width: 70ch; }
.kv-page-body { margin-inline: auto; }
.kv-prose > :first-child { margin-top: 0; }
.kv-prose h2 { font-size: clamp(1.55rem, 1.25rem + .9vw, 2rem); margin: 2em 0 .6em; scroll-margin-top: 20px; position: relative; }
.kv-prose h2::after { content: ""; display: block; width: 56px; height: 3px; margin-top: 12px; border-radius: 3px; background: linear-gradient(90deg, var(--kv-amber) 0 70%, transparent 70% 78%, var(--kv-amber) 78%); }
.kv-prose h3 { font-size: 1.3rem; margin: 1.6em 0 .5em; }
.kv-prose ul, .kv-prose ol { padding-inline-start: 1.4em; margin: 0 0 1.2em; }
.kv-prose li { margin-bottom: .45em; }
.kv-prose ul li::marker { color: var(--kv-amber-ink); }
.kv-prose ol li::marker { color: var(--kv-amber-ink); font-weight: 700; }
.kv-prose strong { color: var(--kv-heading); }
.kv-prose blockquote { margin: 1.6em 0; padding: 4px 22px; border-inline-start: 3px solid var(--kv-amber); font-family: var(--kv-font-title); font-size: 1.2rem; color: var(--kv-heading); }
.kv-prose img { border-radius: 10px; }
.kv-prose hr { border: 0; height: 1px; background: var(--kv-line); margin: 2em 0; }
.kv-prose code { font-family: Consolas, "Courier New", monospace; font-size: .9em; background: var(--kv-tint); padding: .1em .35em; border-radius: 4px; direction: ltr; unicode-bidi: isolate; }

.kv-table { overflow-x: auto; margin: 1.6em 0; border: 1px solid var(--kv-line); border-radius: 12px; background: var(--kv-surface); }
.kv-table table { width: 100%; border-collapse: collapse; font-size: .95rem; line-height: 1.55; }
.kv-table th, .kv-table td { padding: 11px 14px; text-align: start; vertical-align: top; border-bottom: 1px solid var(--kv-line); }
.kv-table thead th { background: var(--kv-night); color: var(--kv-star); font-weight: 700; border-bottom: 2px solid var(--kv-amber); white-space: nowrap; }
.kv-table tbody tr:nth-child(even) td { background: var(--kv-tint); }
.kv-table tbody tr:last-child td { border-bottom: 0; }
.kv-table td:first-child { font-weight: 600; color: var(--kv-heading); }

.kv-footnote { display: flex; gap: 10px; margin: 2.4em 0 0; padding-top: 16px; border-top: 1px solid var(--kv-line-strong); font-size: .9rem; line-height: 1.65; color: var(--kv-muted); max-width: 62ch; }
.kv-footnote__mark { font-family: var(--kv-font-title); font-size: 1.6rem; line-height: 1; color: var(--kv-amber-ink); font-weight: 700; }
.kv-footnote p { margin: 0; }
.kv-readalso { padding: 14px 18px; border-radius: 12px; background: var(--kv-tint); border-inline-start: 3px solid var(--kv-amber); }

/* Homepage prose: the size ladder (ordered list) drawn as a scale with rungs. */
.kv-home-prose { display: grid; justify-items: center; }
.kv-prose--ladder { max-width: 76ch; }
.kv-prose--ladder > p:first-child { font-family: var(--kv-font-title); font-size: clamp(1.25rem, 1.1rem + .6vw, 1.5rem); line-height: 1.6; color: var(--kv-heading); }
.kv-prose--ladder ol { list-style: none; padding: 0; counter-reset: kvrung; position: relative; }
.kv-prose--ladder ol::before { content: ""; position: absolute; inset-block: 12px 12px; inset-inline-start: 17px; width: 2px; background: linear-gradient(var(--kv-amber-soft), var(--kv-night-3)); }
.kv-prose--ladder ol > li { counter-increment: kvrung; position: relative; padding-inline-start: 56px; margin-bottom: 1.1em; }
.kv-prose--ladder ol > li::before {
    content: counter(kvrung); position: absolute; inset-inline-start: 0; top: 0; width: 36px; height: 36px; border-radius: 50%;
    display: grid; place-items: center; background: var(--kv-night); color: var(--kv-amber); font-family: var(--kv-font-title); font-weight: 700; font-size: 1.05rem;
    box-shadow: 0 0 0 4px var(--kv-paper);
}

/* ---------- Contact form (adx-contact-form) in the theme palette ---------- */
body .adxc { --adxc-accent: var(--kv-amber); --adxc-btn-fg: #1B1F4B; --adxc-radius: 14px; --adxc-border: var(--kv-line-strong); --adxc-input-bg: var(--kv-surface); }
body .adxc .adxc-form { background: var(--kv-surface); box-shadow: var(--kv-shadow); }
body .adxc .adxc-submit { border-radius: 999px; min-height: 46px; padding-inline: 26px; font-weight: 700; }
body .adxc .adxc-field input:focus, body .adxc .adxc-field textarea:focus { outline: 3px solid var(--kv-focus); outline-offset: 1px; }

/* ---------- Footer ---------- */
.kv-footer { position: relative; background: var(--kv-night-2); color: rgba(255, 246, 230, .86); margin-top: 24px; overflow: hidden; isolation: isolate; }
.kv-footer__sky { position: absolute; inset: 0; z-index: -1; opacity: .5; background:
    radial-gradient(circle at 92% 0%, transparent 0 180px, rgba(242, 165, 65, .22) 181px, transparent 183px),
    radial-gradient(circle at 92% 0%, transparent 0 300px, rgba(255, 246, 230, .1) 301px, transparent 303px); }
.kv-footer__grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.3fr) minmax(0, 1fr); gap: 36px; padding-block: 52px 30px; }
.kv-footer__desc { margin: 14px 0 0; max-width: 30em; font-size: .95rem; }
.kv-footer__title { font-family: var(--kv-font-body); font-size: .95rem; color: var(--kv-amber); letter-spacing: .03em; margin-bottom: 10px; }
.kv-footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0 20px; }
.kv-footer__list--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.kv-footer__list a { display: inline-flex; align-items: center; min-height: 40px; color: rgba(255, 246, 230, .92); text-decoration: none; font-size: .95rem; }
.kv-footer__list a:hover { color: var(--kv-amber); text-decoration: underline; text-underline-offset: 4px; }
.kv-footer__base { background: linear-gradient(rgba(255, 246, 230, .14), rgba(255, 246, 230, .14)) center top / calc(100% - 2 * var(--kv-gutter)) 1px no-repeat; padding-block: 18px 28px; display: flex; flex-wrap: wrap; gap: 8px 32px; justify-content: space-between; font-size: .84rem; color: rgba(255, 246, 230, .74); }
.kv-footer__note { margin: 0; max-width: 72em; }
.kv-footer__copy { margin: 0; white-space: nowrap; }
@media (max-width: 860px) {
    .kv-footer__grid { grid-template-columns: 1fr; gap: 26px; }
}

/* ---------- Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
    .kv-card:hover { transform: none; }
}
@media print {
    .kv-header, .kv-footer, .kv-toc, .kv-related, .kv-skip { display: none; }
    .kv-article__head, .kv-pagehead { background: none; color: #000; }
    .kv-article__title { color: #000; }
}

/* Display formulas (a paragraph marked dir="ltr" in the content): centred on a tinted plate. */
.kv-prose p[dir="ltr"] { text-align: center; font-family: var(--kv-font-title); font-size: 1.3rem; line-height: 1.5; padding: 12px 18px; margin: 1.2em 0; background: var(--kv-tint); border-radius: 10px; overflow-x: auto; }
.kv-prose p[dir="ltr"] strong { font-weight: 400; }
.kv-prose span[dir="ltr"] { unicode-bidi: isolate; }