/* ==========================================================================
   running-facil.com — bespoke stylesheet from DESIGN.md
   "WHOOP — performance laboratory at midnight": full-bleed black theatrical
   heroes alternating with clinical white sections; one pulse violet (#4a53ff)
   as the lone chromatic accent; oversized carved display type (Montserrat as
   Proxima Nova substitute); 300px pills, 24px cards, flat color elevation.
   ========================================================================== */

@font-face {
    font-family: 'MontserratVariable';
    src: url('/fonts/montserrat-var.woff2') format('woff2');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

:root {
    --color-pulse-violet: #4a53ff;
    --color-violet-deep: #343ce0;
    --color-obsidian: #000000;
    --color-carbon: #191919;
    --color-paper-white: #ffffff;
    --color-lab-mist: #f3f5f9;
    --color-hairline: #e5e7eb;
    --color-fog-gray: #6d6d6d;
    --color-ash: #999999;

    --font-sans: 'MontserratVariable', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --radius-cards: 24px;
    --radius-pills: 300px;
    --radius-sm: 8px;

    --page-max: 1200px;
    --shadow-md: rgba(199, 199, 199, 0.25) 0px 4px 15px 0px;
}

/* ── Base ──────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    font-weight: 400;
    letter-spacing: -0.2px;
    color: var(--color-obsidian);
    background: var(--color-paper-white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }

h1, h2, h3, h4 { margin: 0 0 16px; font-weight: 600; }

p { margin: 0 0 16px; }

a { color: var(--color-violet-deep); }

:focus-visible {
    outline: 3px solid var(--color-pulse-violet);
    outline-offset: 2px;
    border-radius: 4px;
}

.visually-hidden {
    position: absolute !important;
    width: 1px; height: 1px;
    margin: -1px; padding: 0;
    overflow: hidden; clip: rect(0 0 0 0);
    white-space: nowrap; border: 0;
}

.skip-link {
    position: absolute;
    left: 16px; top: -60px;
    z-index: 200;
    background: var(--color-pulse-violet);
    color: #fff;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: var(--radius-pills);
    text-decoration: none;
    transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

.container { max-width: var(--page-max); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; }
.container-article { max-width: 820px; }

.section { padding: 92px 0; background: var(--color-paper-white); }
.section-alt { background: var(--color-lab-mist); }

.section-title {
    font-size: 35px;
    line-height: 1.05;
    letter-spacing: -1.05px;
    font-weight: 600;
    margin: 0 0 36px;
}

/* Uppercase tracked labels — the WHOOP signature micro-type */
.label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-obsidian);
    margin: 0 0 16px;
}
.label-violet { color: var(--color-pulse-violet); }
.label-muted { color: var(--color-ash); }

/* ── Buttons — every action is a pill ──────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    line-height: 1.2;
    text-decoration: none;
    border-radius: var(--radius-pills);
    padding: 15px 32px;
    border: 1.5px solid transparent;
    cursor: pointer;
    transition: background-color .15s ease, color .15s ease, border-color .15s ease;
}

.btn-white { background: #fff; color: #000; }
.btn-white:hover { background: var(--color-hairline); }

.btn-violet { background: var(--color-pulse-violet); color: #fff; }
.btn-violet:hover { background: var(--color-violet-deep); }

.btn-outline { background: transparent; color: #000; border-color: var(--color-hairline); padding: 12px 28px; }
.btn-outline:hover { border-color: #000; }

.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-outline-light:hover { border-color: #fff; }

.btn-sm { padding: 9px 20px; font-size: 12px; }
.btn-nav { padding: 10px 24px; font-size: 13px; }

/* ── Announcement bar (violet, the only chromatic band) ── */

.announce-bar {
    background: var(--color-pulse-violet);
    color: #fff;
    text-align: center;
    padding: 11px 20px;
}
.announce-bar p { margin: 0; font-size: 14px; font-weight: 500; }
.announce-bar a { color: #fff; font-weight: 600; }

/* ── Header (black) ────────────────────────────────────── */

.site-header { background: var(--color-obsidian); }

.header-inner {
    max-width: var(--page-max);
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-word {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: #fff;
}
.brand-word em { font-style: normal; color: var(--color-pulse-violet); }

.site-nav .nav-list {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 32px;
    margin: 0;
    padding: 0;
}
.site-nav a:not(.btn) {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}
.site-nav a:not(.btn):hover { color: var(--color-ash); }

.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; }
.nav-toggle-bar {
    display: block;
    width: 24px; height: 2px;
    background: #fff;
    margin: 5px 0;
    transition: transform .2s ease;
}
.nav-toggle.is-open .nav-toggle-bar:first-child { transform: translateY(3.5px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle-bar:last-child { transform: translateY(-3.5px) rotate(-45deg); }

/* ── Hero — black theater ──────────────────────────────── */

.hero {
    background: var(--color-obsidian);
    color: #fff;
    padding: 110px 0 0;
}

.hero-well { padding: 0 8% 92px; }

.hero-title {
    font-size: clamp(64px, 10vw, 120px);
    line-height: 0.75;
    letter-spacing: -0.04em;
    font-weight: 500;
    color: #fff;
    margin: 0 0 32px;
    text-wrap: balance;
}

.hero-sub {
    font-size: 19px;
    line-height: 1.45;
    letter-spacing: -0.3px;
    color: var(--color-ash);
    max-width: 520px;
    margin: 0 0 40px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* Metric overlay strip */
.hero-metrics {
    border-top: 1px solid rgba(255,255,255,.14);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    max-width: var(--page-max);
    margin: 0 auto;
    padding: 40px 24px 48px;
    gap: 24px;
}
.metric { display: grid; gap: 6px; }
.metric-num {
    font-size: 50px;
    font-weight: 400;
    line-height: 0.9;
    letter-spacing: -2px;
    color: #fff;
}
.metric-label {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-ash);
}

.hero-404 { padding-bottom: 110px; }
.hero-404 .hero-well { padding-bottom: 0; }

/* ── Story cards (carbon, tall) ────────────────────────── */

.story-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.story-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--color-carbon);
    color: #fff;
    border-radius: var(--radius-cards);
    padding: 33px 30px 72px;
    min-height: 340px;
    text-decoration: none;
    overflow: hidden;
}
.story-card::before {
    /* decorative violet pulse wash — background only, per DESIGN.md */
    content: '';
    position: absolute;
    inset: auto -40% -55% -40%;
    height: 70%;
    background: radial-gradient(ellipse at center, rgba(74, 83, 255, .35), transparent 70%);
    pointer-events: none;
}
.story-num {
    font-size: 50px;
    font-weight: 400;
    letter-spacing: -2px;
    line-height: 0.8;
    color: var(--color-pulse-violet);
    margin-bottom: 28px;
}
.story-card h3 {
    font-size: 24px;
    letter-spacing: -0.72px;
    line-height: 1.13;
    font-weight: 600;
    margin-bottom: 12px;
}
.story-card p { color: var(--color-ash); font-size: 16px; letter-spacing: -0.3px; margin: 0; }
.story-more {
    position: absolute;
    bottom: 24px; right: 24px;
    width: 40px; height: 40px;
    border: 1px solid rgba(255,255,255,.55);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 18px;
    color: #fff;
    transition: background-color .15s ease, color .15s ease;
}
.story-card:hover .story-more { background: #fff; color: #000; }

/* ── Lab Mist feature strip ────────────────────────────── */

.feature-strip {
    background: var(--color-paper-white);
    border-radius: var(--radius-cards);
    padding: 24px 32px;
    display: flex;
    align-items: center;
    gap: 32px;
}
.section:not(.section-alt) .feature-strip { background: var(--color-lab-mist); }
.feature-strip-media {
    flex: 0 0 auto;
    width: 160px; height: 140px;
    background: var(--color-obsidian);
    border-radius: var(--radius-cards);
    display: grid;
    place-items: center;
}
.feature-strip-copy { flex: 1; }
.feature-strip-copy h2 { font-size: 24px; letter-spacing: -0.72px; margin-bottom: 8px; }
.feature-strip-copy p { color: var(--color-fog-gray); margin: 0; }
.feature-strip > .btn { flex: 0 0 auto; }

/* ── Section head / grids ──────────────────────────────── */

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.section-head .section-title { margin-bottom: 36px; }

.post-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.post-card {
    background: var(--color-lab-mist);
    border-radius: var(--radius-cards);
    overflow: hidden;
    display: flex;
}
.section-alt .post-card { background: var(--color-paper-white); }
.post-card-link {
    display: flex;
    flex-direction: column;
    width: 100%;
    text-decoration: none;
    color: inherit;
}
.post-card-media img {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
}
.post-card-body {
    padding: 28px 30px 30px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.post-card-body .label { margin-bottom: 2px; color: var(--color-pulse-violet); font-size: 12px; }
.post-card-title { font-size: 24px; letter-spacing: -0.72px; line-height: 1.13; font-weight: 600; margin: 0; }
.post-card-link:hover .post-card-title { color: var(--color-violet-deep); }
.post-card-excerpt {
    margin: 0;
    font-size: 16px;
    letter-spacing: -0.3px;
    color: var(--color-fog-gray);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.post-card-meta {
    margin: auto 0 0;
    padding-top: 10px;
    font-size: 13px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--color-ash);
}

/* Empty state */
.empty-state {
    background: var(--color-lab-mist);
    border-radius: var(--radius-cards);
    padding: 50px 40px;
    max-width: 640px;
}
.section-alt .empty-state { background: var(--color-paper-white); }
.empty-title { font-size: 24px; letter-spacing: -0.72px; font-weight: 600; margin-bottom: 10px; }
.empty-state p:last-child { margin-bottom: 0; }
.empty-state a { color: var(--color-violet-deep); font-weight: 600; }

/* ── Intro grid ────────────────────────────────────────── */

.intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    gap: 60px;
}
.intro-body p { color: var(--color-fog-gray); font-size: 19px; letter-spacing: -0.4px; line-height: 1.5; }
.intro-body p:last-child { margin-bottom: 0; }

/* ── Page head (inner pages — carbon band) ─────────────── */

.page-head {
    background: var(--color-obsidian);
    color: #fff;
    padding: 64px 0 56px;
}
.page-title {
    font-size: 50px;
    line-height: 0.9;
    letter-spacing: -2px;
    font-weight: 500;
    margin: 0 0 16px;
}
.page-sub { font-size: 19px; letter-spacing: -0.3px; color: var(--color-ash); max-width: 560px; margin: 0; }

/* ── Breadcrumb ────────────────────────────────────────── */

.breadcrumb { margin-bottom: 24px; }
.breadcrumb-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.page-head .breadcrumb-list, .article-head .breadcrumb-list { color: var(--color-ash); }
.breadcrumb-list li + li::before { content: '/'; margin-right: 8px; opacity: .5; }
.breadcrumb-list a { color: inherit; text-decoration: none; }
.breadcrumb-list a:hover { color: var(--color-pulse-violet); }
.breadcrumb-list [aria-current] {
    display: inline-block;
    max-width: 30ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: bottom;
}

/* ── Article ───────────────────────────────────────────── */

.article-head {
    background: var(--color-obsidian);
    color: #fff;
    padding: 64px 0 48px;
}
.article-title {
    font-size: clamp(35px, 5vw, 50px);
    line-height: 1.0;
    letter-spacing: -0.04em;
    font-weight: 500;
    margin: 0 0 20px;
    text-wrap: balance;
}
.article-standfirst {
    font-size: 19px;
    line-height: 1.45;
    letter-spacing: -0.3px;
    color: var(--color-ash);
    max-width: 620px;
    margin: 0 0 32px;
}

.article-byline {
    display: flex;
    align-items: center;
    gap: 14px;
    border-top: 1px solid rgba(255,255,255,.14);
    padding-top: 24px;
}
.byline-avatar { border-radius: 50%; display: block; }
.byline-name { font-weight: 600; font-size: 15px; color: #fff; text-decoration: none; }
a.byline-name:hover { color: var(--color-pulse-violet); }
.byline-meta {
    margin: 3px 0 0;
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-ash);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.article-body { background: var(--color-paper-white); padding: 56px 0 92px; }

.article-cover { margin: 0 0 40px; }
.article-cover img {
    display: block;
    width: 100%;
    border-radius: var(--radius-cards);
}

/* TOC — lab mist card */
.toc-card {
    background: var(--color-lab-mist);
    border-radius: var(--radius-cards);
    padding: 30px 33px;
    margin-bottom: 48px;
}
.toc-head {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-pulse-violet);
    margin: 0 0 14px;
}
.toc-list { margin: 0; padding: 0 0 0 20px; display: grid; gap: 9px; font-size: 16px; }
.toc-list a { color: var(--color-obsidian); font-weight: 500; text-decoration: none; }
.toc-list a:hover { color: var(--color-violet-deep); text-decoration: underline; }

/* ── Prose ─────────────────────────────────────────────── */

.prose { font-size: 18px; line-height: 1.65; letter-spacing: -0.2px; }

.prose h2 {
    font-size: 32px;
    letter-spacing: -0.96px;
    line-height: 1.09;
    font-weight: 600;
    margin: 52px 0 18px;
    scroll-margin-top: 24px;
}
.prose h3 { font-size: 24px; letter-spacing: -0.72px; line-height: 1.13; margin: 38px 0 14px; scroll-margin-top: 24px; }
.prose h4 { font-size: 19px; letter-spacing: -0.4px; margin: 30px 0 10px; scroll-margin-top: 24px; }

.prose a { color: var(--color-violet-deep); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
.prose a:hover { color: var(--color-pulse-violet); }

.prose ul, .prose ol { padding-left: 26px; margin: 0 0 18px; }
.prose li { margin-bottom: 8px; }

.prose img { border-radius: var(--radius-cards); margin: 8px 0; }
.prose figure { margin: 30px 0; }
.prose figcaption { font-size: 14px; color: var(--color-ash); margin-top: 10px; }

/* Disclaimer / notice box */
.prose blockquote {
    margin: 30px 0;
    padding: 22px 26px;
    background: var(--color-lab-mist);
    border-left: 4px solid var(--color-pulse-violet);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 16px;
}
.prose blockquote p { margin: 0; }
.prose blockquote p + p { margin-top: 10px; }

/* Comparison tables — scroll on mobile */
.prose table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    border-collapse: collapse;
    margin: 30px 0;
    font-size: 16px;
}
.prose th, .prose td {
    border: 1px solid var(--color-hairline);
    padding: 12px 15px;
    text-align: left;
    min-width: 120px;
    vertical-align: top;
}
.prose th {
    background: var(--color-lab-mist);
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;
}

.prose hr { border: 0; border-top: 1px solid var(--color-hairline); margin: 44px 0; }

.prose code {
    background: var(--color-lab-mist);
    border-radius: 6px;
    padding: 2px 6px;
    font-size: .9em;
}

.prose svg { max-width: 100%; height: auto; }

/* ── Contact ───────────────────────────────────────────── */

.contact-card {
    background: var(--color-lab-mist);
    border-radius: var(--radius-cards);
    padding: 40px 44px;
    margin-bottom: 40px;
}
.contact-mail { font-size: 24px; font-weight: 700; letter-spacing: -0.72px; margin-bottom: 12px; overflow-wrap: anywhere; }
.contact-mail a { color: var(--color-violet-deep); text-decoration: none; }
.contact-mail a:hover { text-decoration: underline; }
.contact-card p:last-child { margin-bottom: 0; }
.contact-notes h2 { margin-top: 0; }

/* ── Sitemap ───────────────────────────────────────────── */

.sitemap-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.sitemap-group h2 { font-size: 24px; letter-spacing: -0.72px; margin: 0 0 14px; }
.sitemap-group h2 + ul { margin-bottom: 33px; }
.sitemap-group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.sitemap-group a { color: var(--color-obsidian); font-weight: 500; text-decoration: none; }
.sitemap-group a:hover { color: var(--color-violet-deep); text-decoration: underline; }
.sitemap-date { display: block; font-size: 13px; color: var(--color-ash); }
.sitemap-empty { color: var(--color-fog-gray); }

/* ── Dark CTA band + newsletter ────────────────────────── */

.cta-band {
    background: var(--color-obsidian);
    color: #fff;
    padding: 110px 0;
    text-align: left;
}
.cta-band-kicker {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-pulse-violet);
    margin: 0 0 20px;
}
.cta-band-title {
    font-size: clamp(35px, 5.5vw, 50px);
    line-height: 0.95;
    letter-spacing: -2px;
    font-weight: 500;
    color: #fff;
    margin: 0 0 20px;
}
.cta-band-sub { font-size: 19px; letter-spacing: -0.3px; color: var(--color-ash); max-width: 520px; margin: 0 0 36px; }

.newsletter-form { display: flex; gap: 12px; flex-wrap: wrap; max-width: 560px; }
.newsletter-form input[type="email"] {
    flex: 1 1 240px;
    min-width: 0;
    font-family: inherit;
    font-size: 16px;
    color: #fff;
    background: var(--color-carbon);
    border: 1.5px solid rgba(255,255,255,.2);
    border-radius: var(--radius-pills);
    padding: 14px 24px;
}
.newsletter-form input[type="email"]::placeholder { color: var(--color-ash); }
.newsletter-form input[aria-invalid="true"] { border-color: var(--color-pulse-violet); }
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.newsletter-ok { color: #fff; font-weight: 600; margin: 0; }

/* ── Footer (carbon) ───────────────────────────────────── */

.site-footer {
    background: var(--color-carbon);
    color: var(--color-ash);
    padding: 64px 0 0;
    border-top: 1px solid rgba(255,255,255,.08);
}

.footer-inner {
    display: grid;
    grid-template-columns: minmax(0, 2fr) 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-tagline { margin: 14px 0 0; font-size: 14px; color: var(--color-ash); max-width: 34ch; }

.footer-head {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-fog-gray);
    margin: 0 0 14px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.footer-col a { color: #fff; text-decoration: none; font-size: 15px; }
.footer-col a:hover { color: var(--color-pulse-violet); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding-top: 24px; padding-bottom: 28px; }
.footer-bottom p { margin: 0; font-size: 13px; color: var(--color-fog-gray); }

/* ── Legal fallback (shared views) ─────────────────────── */

.page-legal .section { background: var(--color-paper-white); }
.legal-updated { font-size: 14px; color: var(--color-ash); }

/* ── Cookie banner ─────────────────────────────────────── */

.cookie-banner {
    position: fixed;
    left: 16px; right: 16px; bottom: 16px;
    z-index: 300;
    max-width: 560px;
    margin: 0 auto;
    background: #fff;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-cards);
    box-shadow: var(--shadow-md);
    padding: 20px 24px;
    display: none;
}
.cookie-banner.is-visible { display: block; }
.cookie-text { font-size: 14px; margin: 0 0 14px; }
.cookie-text a { color: var(--color-violet-deep); }
.cookie-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ── Responsive ────────────────────────────────────────── */

@media (max-width: 1024px) {
    .story-grid { grid-template-columns: 1fr; }
    .story-card { min-height: 0; padding-bottom: 60px; }
    .post-grid { grid-template-columns: repeat(2, 1fr); }
    .intro-grid { grid-template-columns: 1fr; gap: 24px; }
    .hero-metrics { grid-template-columns: repeat(2, 1fr); }
    .feature-strip { flex-wrap: wrap; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .section { padding: 64px 0; }

    .nav-toggle { display: block; }
    .site-nav {
        display: none;
        position: absolute;
        left: 0; right: 0;
        background: var(--color-obsidian);
        border-top: 1px solid rgba(255,255,255,.12);
        padding: 20px 24px;
        z-index: 150;
    }
    .site-header { position: relative; }
    .site-nav.is-open { display: block; }
    .site-nav .nav-list { flex-direction: column; align-items: stretch; gap: 4px; }
    .site-nav a:not(.btn) { display: block; padding: 14px 4px; font-size: 15px; }
    .nav-cta-item { margin-top: 14px; }
    .nav-cta-item .btn { display: flex; }
    body.nav-locked { overflow: hidden; }

    .hero { padding-top: 72px; }
    .hero-well { padding: 0 24px 64px; }
    .hero-title { font-size: clamp(52px, 15vw, 72px); }
    .hero-sub { font-size: 17px; }

    .post-grid { grid-template-columns: 1fr; }
    .sitemap-cols { grid-template-columns: 1fr; }

    .page-title { font-size: 40px; letter-spacing: -1.4px; }

    .feature-strip { padding: 24px; }
    .feature-strip-media { width: 100%; height: 120px; }
    .feature-strip > .btn { width: 100%; }

    .cta-band { padding: 72px 0; }
    .toc-card { padding: 24px; }

    .footer-inner { grid-template-columns: 1fr; gap: 32px; }
}