/* ─────────────────────────────────────────────────────────────
   eBASIS — LAYOUT (v3)
   Fixed top navbar, full-width main content, institutional feel.
   ───────────────────────────────────────────────────────────── */

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 9999;
    background: var(--color-ink);
    color: var(--color-ink-invert);
    padding: var(--space-3) var(--space-4);
    border-radius: 0 0 var(--radius-md) 0;
    font-weight: 500;
}

.skip-link:focus {
    left: 0;
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ─── Site Shell (simple block layout) ─── */
.site-shell {
    display: block;
    min-height: 100vh;
    background: var(--surface-page);
    padding-top: var(--navbar-height);
}

/* ─── Navbar ───────────────────────────────────────────── */
.site-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    background: var(--surface-navbar);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 100;
    display: flex;
    align-items: center;
}

.navbar-inner {
    display: flex;
    align-items: center;
    gap: var(--space-7);
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--content-pad-lg);
}

.navbar-brand {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-display);
    font-size: 26px;
    line-height: 1;
    font-weight: 500;
    color: var(--color-ink);
    letter-spacing: -0.01em;
    text-decoration: none;
    border: none;
    flex-shrink: 0;
    font-optical-sizing: auto;
}

.navbar-brand:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.navbar-brand sup {
    font-size: 0.45em;
    font-weight: 500;
    vertical-align: super;
    margin-left: 2px;
}

.navbar-brand img {
    display: block;
    height: 38px;
    width: auto;
    transition: opacity var(--duration-fast) var(--ease-out);
}

.navbar-brand:hover img {
    opacity: 0.78;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    margin: 0 0 0 auto;
    padding: 0;
    list-style: none;
}

.navbar-nav > li {
    position: relative;
}

.navbar-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.2;
    color: var(--color-ink-secondary);
    text-decoration: none;
    background: transparent;
    border: none;
    padding: var(--space-3) 0;
    margin: 0;
    letter-spacing: 0.005em;
    cursor: pointer;
    transition: color var(--duration-fast) var(--ease-out);
}

button.navbar-item {
    -webkit-appearance: none;
    appearance: none;
}

.navbar-item:hover {
    color: var(--color-ink);
    text-decoration: none;
}

.navbar-item.active,
.navbar-item[aria-current="page"],
.navbar-item[aria-expanded="true"] {
    color: var(--color-ink);
}

.navbar-item.has-dropdown::after {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    margin-left: 4px;
    opacity: 0.6;
}

/* ─── Dropdown menus ─── */
.navbar-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: -16px;
    min-width: 260px;
    background: var(--surface-navbar);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-3);
    list-style: none;
    margin: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out),
                visibility 0s linear var(--duration-fast);
    z-index: 110;
}

/* Invisible bridge so the cursor can travel from the trigger to the
   dropdown without crossing dead space and dismissing the menu. */
.navbar-dropdown::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    right: 0;
    height: 12px;
}

.navbar-nav > li:hover > .navbar-dropdown,
.navbar-nav > li:focus-within > .navbar-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity var(--duration-normal) var(--ease-out),
                transform var(--duration-normal) var(--ease-out),
                visibility 0s linear 0s;
}

.navbar-dropdown li {
    margin: 0;
}

.navbar-dropdown a {
    display: block;
    padding: var(--space-3) var(--space-3);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    text-decoration: none;
    border: none;
    border-radius: var(--radius-sm);
    transition: background var(--duration-fast) var(--ease-out),
                color var(--duration-fast) var(--ease-out);
}

.navbar-dropdown a small {
    display: block;
    margin-top: 2px;
    font-size: 12px;
    font-weight: 400;
    color: var(--color-ink-tertiary);
    letter-spacing: 0;
    text-transform: none;
}

.navbar-dropdown a:hover {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    text-decoration: none;
}

.navbar-dropdown a:hover small {
    color: var(--color-ink-secondary);
}

/* ─── Navbar CTAs ─── */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-left: var(--space-5);
    padding-left: var(--space-5);
    border-left: 1px solid var(--border-subtle);
}

.navbar-contact {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink-secondary);
    text-decoration: none;
    border: none;
}

.navbar-contact:hover {
    color: var(--color-ink);
    text-decoration: none;
}

.btn-login {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px var(--space-4);
    font-family: var(--font-body);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-ink-invert);
    background: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: background var(--duration-fast) var(--ease-out),
                border-color var(--duration-fast) var(--ease-out);
}

.btn-login:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-ink-invert);
    text-decoration: none;
}

.btn-login::after {
    content: '→';
    font-weight: 400;
    opacity: 0.8;
}

/* ─── Mobile hamburger ─── */
.mobile-nav-toggle {
    display: none;
    margin-left: auto;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    position: relative;
}

.mobile-nav-toggle span,
.mobile-nav-toggle span::before,
.mobile-nav-toggle span::after {
    display: block;
    position: absolute;
    left: 50%;
    width: 18px;
    height: 1.5px;
    background: var(--color-ink);
    transition: transform var(--duration-fast) var(--ease-out);
    transform: translateX(-50%);
}

.mobile-nav-toggle span { top: 50%; }
.mobile-nav-toggle span::before { content: ''; top: -6px; }
.mobile-nav-toggle span::after  { content: ''; top: 6px;  }

.mobile-nav-toggle[aria-expanded="true"] span { background: transparent; }
.mobile-nav-toggle[aria-expanded="true"] span::before {
    top: 0; transform: translateX(-50%) rotate(45deg);
}
.mobile-nav-toggle[aria-expanded="true"] span::after {
    top: 0; transform: translateX(-50%) rotate(-45deg);
}

.mobile-nav-backdrop {
    display: none;
    position: fixed;
    inset: var(--navbar-height) 0 0 0;
    background: rgba(10, 10, 10, 0.35);
    z-index: 90;
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-nav-backdrop.active {
    display: block;
    opacity: 1;
}

/* ─── Main Content ─── */
.site-main {
    padding: var(--space-5) 0 var(--space-9);
    min-width: 0;
    position: relative;
}

.content-wrap,
.content-wide,
.content-full {
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--content-pad-lg);
}

.content-wrap {
    max-width: calc(var(--content-max) + (2 * var(--content-pad-lg)));
}

.content-wide {
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
}

.content-full {
    max-width: 1440px;
}

/* ─── Breadcrumb ─── */
.breadcrumb {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-ink-tertiary);
    margin-bottom: var(--space-6);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.breadcrumb a {
    color: var(--color-ink-tertiary);
    text-decoration: none;
    border: none;
}

.breadcrumb a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.breadcrumb .separator {
    margin: 0 var(--space-3);
    color: var(--border-strong);
}

.breadcrumb .current {
    color: var(--color-ink);
    font-weight: 600;
}

/* ─── Page Hero (typographic) ─── */
.page-hero {
    padding: var(--space-5) 0 var(--space-7);
    max-width: var(--content-max);
    position: relative;
}

.page-hero h1 {
    margin-top: 0;
    margin-bottom: var(--space-5);
}

.page-hero .hero-description {
    font-size: 19px;
    line-height: 1.55;
    color: var(--color-ink-secondary);
    max-width: 62ch;
}

/* ─── Journal masthead wrapper ─── */
.hero-masthead {
    padding-top: var(--space-5);
}

.masthead-bar {
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
    margin: 0 auto;
    padding: var(--space-3) var(--content-pad-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-ink-tertiary);
}

.masthead-meta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-ink);
}

.masthead-sep {
    color: var(--color-ink-tertiary);
    opacity: 0.6;
}

.masthead-pub {
    text-align: right;
}

@media (max-width: 780px) {
    .masthead-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
        font-size: 10px;
    }
    .masthead-pub {
        text-align: left;
    }
}

/* ─── In this issue — contents index ─── */
.hero-contents {
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
    margin: 0 auto;
    padding: 0 var(--content-pad-lg) var(--space-8);
    border-top: 1px solid var(--border-subtle);
}

.hero-contents-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-ink-tertiary);
    padding-top: var(--space-5);
    padding-bottom: var(--space-4);
}

.hero-contents-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    border-top: 1px solid var(--border-subtle);
}

.hero-contents-item {
    border-right: 1px solid var(--border-subtle);
}

.hero-contents-item:last-child {
    border-right: none;
}

.hero-contents-item > a {
    display: grid;
    grid-template-rows: auto auto 1fr auto;
    gap: var(--space-2);
    padding: var(--space-5) var(--space-4) var(--space-5);
    min-height: 180px;
    text-decoration: none;
    color: var(--color-ink);
    transition: background-color var(--duration-normal) var(--ease-out);
}

.hero-contents-item > a:hover,
.hero-contents-item > a:focus-visible {
    background-color: var(--color-accent-subtle);
    outline: none;
}

.hero-contents-num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-ink-tertiary);
}

.hero-contents-title {
    font-family: var(--font-display);
    font-size: 28px;
    line-height: 1.1;
    color: var(--color-ink);
    margin-top: var(--space-1);
}

.hero-contents-sub {
    font-size: 13px;
    line-height: 1.5;
    color: var(--color-ink-secondary);
}

.hero-contents-arrow {
    font-size: 18px;
    color: var(--color-ink-tertiary);
    transition: transform var(--duration-normal) var(--ease-out),
                color var(--duration-normal) var(--ease-out);
    align-self: end;
}

.hero-contents-item > a:hover .hero-contents-arrow,
.hero-contents-item > a:focus-visible .hero-contents-arrow {
    transform: translateX(4px);
    color: var(--color-accent);
}

@media (max-width: 1024px) {
    .hero-contents-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-contents-item:nth-child(2) {
        border-right: none;
    }
    .hero-contents-item:nth-child(1),
    .hero-contents-item:nth-child(2) {
        border-bottom: 1px solid var(--border-subtle);
    }
    .hero-contents-item > a {
        min-height: 150px;
    }
}

@media (max-width: 640px) {
    .hero-contents {
        padding-left: var(--content-pad-sm);
        padding-right: var(--content-pad-sm);
    }
    .hero-contents-list {
        grid-template-columns: 1fr;
    }
    .hero-contents-item {
        border-right: none;
        border-bottom: 1px solid var(--border-subtle);
    }
    .hero-contents-item:last-child {
        border-bottom: none;
    }
    .hero-contents-item > a {
        min-height: 0;
        padding: var(--space-4) var(--space-3);
    }
    .hero-contents-title {
        font-size: 24px;
    }
}

/* ─── Hero cover (homepage — oversized editorial) ─── */
.hero-cover {
    display: flex;
    align-items: flex-start;
    padding: var(--space-2) var(--content-pad-lg) var(--space-5);
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
    margin: 0 auto;
    box-sizing: border-box;
}

.hero-cover-inner {
    width: 100%;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.hero-cover-body {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: var(--space-7);
    align-items: start;
    margin-top: 0;
    min-height: 0;
}

.hero-cover-text {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    gap: var(--space-5);
    min-width: 0;
    min-height: 0;
}

.hero-cover-plate {
    margin: 0;
    width: 100%;
    max-width: 420px;
    max-height: 100%;
    justify-self: end;
    align-self: start;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

@media (min-width: 1600px) {
    .hero-cover-plate {
        max-width: 460px;
    }
}

.hero-cover-plate .plate-frame-wrap {
    flex: 1 1 auto;
    min-height: 0;
}

.hero-cover-plate .plate-frame {
    height: 100%;
}

.hero-cover-top {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-ink-tertiary);
}

.hero-cover-eyebrow {
    color: var(--color-ink);
}

.hero-cover-rule {
    display: block;
    width: 48px;
    height: 2px;
    background: var(--color-accent);
    margin: var(--space-3) 0 var(--space-4);
}

.hero-cover-title {
    font-family: var(--font-display);
    font-weight: 400;
    font-style: normal;
    font-size: clamp(44px, 5.8vw, 88px);
    line-height: 1.04;
    letter-spacing: -0.018em;
    color: var(--color-ink);
    margin: 0;
    text-wrap: balance;
}

.hero-cover-title em.display-serif {
    font-style: italic;
    color: var(--color-accent);
    display: inline-block;
    font-size: 1em;
    line-height: 1.04;
    vertical-align: baseline;
}

.hero-cover-foot {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.hero-cover-lead {
    max-width: 52ch;
    font-size: 15px;
    line-height: 1.55;
    color: var(--color-ink-secondary);
    margin: 0;
}

.hero-cover-cta {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    justify-content: flex-start;
}

@media (max-width: 1024px) {
    .hero-cover {
        min-height: 0;
        padding: 0 var(--content-pad-lg) var(--space-7);
    }
    .hero-cover-body {
        grid-template-columns: 1fr;
        gap: var(--space-5);
        margin-top: 0;
    }
    .hero-cover-plate {
        max-width: 420px;
        justify-self: start;
    }
    .hero-cover-text {
        gap: var(--space-5);
    }
    .hero-cover-title {
        font-size: clamp(44px, 7.2vw, 72px);
    }
}

@media (max-width: 640px) {
    .hero-cover {
        padding: var(--space-3) var(--content-pad-sm) var(--space-5);
    }
    .hero-cover-body {
        gap: var(--space-4);
    }
    .hero-cover-text {
        gap: var(--space-3);
    }
    .hero-cover-plate {
        max-width: 100%;
    }
    .hero-cover-top {
        font-size: 10px;
    }
    .hero-cover-rule {
        margin: var(--space-2) 0 var(--space-2);
    }
    .hero-cover-title {
        font-size: clamp(40px, 12.5vw, 60px);
        line-height: 1.04;
    }
    .hero-cover-foot {
        padding-top: var(--space-3);
        gap: var(--space-3);
    }
    .hero-cover-cta {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: var(--space-2);
    }
    .hero-cover-cta .btn {
        width: 100%;
        text-align: center;
        justify-content: center;
        padding: var(--space-3) var(--space-5);
        font-size: 12px;
    }
}

/* ─── Hero with image (split layout) ─── */
.hero-split {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-6) var(--content-pad-lg) var(--space-9);
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
    margin: 0 auto;
}

.hero-split .hero-text h1 {
    margin-top: var(--space-3);
}

.hero-split .hero-image {
    position: relative;
    aspect-ratio: 4 / 5;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: var(--surface-code);
    border: 1px solid var(--border-subtle);
}

.hero-split .hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.95);
    transition: transform var(--duration-slow) var(--ease-out);
}

.hero-split .hero-image:hover img {
    transform: scale(1.03);
}

/* When the hero contains a .plate figure, drop the legacy chrome
   so the plate's own offset frame and cornermarks render cleanly. */
.hero-split .hero-image:has(.plate) {
    aspect-ratio: auto;
    background: transparent;
    border: none;
    border-radius: 0;
    overflow: visible;
}

.hero-split .hero-cta-row {
    display: flex;
    gap: var(--space-3);
    flex-wrap: wrap;
    margin-top: var(--space-5);
}

@media (max-width: 900px) {
    .hero-split {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding: var(--space-5) var(--content-pad-sm) var(--space-7);
    }
    .hero-split .hero-image {
        aspect-ratio: 16 / 10;
        max-width: 100%;
    }
}

/* ─── Footer ─── */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding: var(--space-7) 0 var(--space-6);
    color: var(--color-ink-tertiary);
    font-size: 13px;
    line-height: 1.6;
    background: var(--surface-page);
}

.footer-inner {
    max-width: calc(var(--content-wide) + (2 * var(--content-pad-lg)));
    margin: 0 auto;
    padding: 0 var(--content-pad-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1fr;
    gap: var(--space-7);
    margin-bottom: var(--space-7);
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 24px;
    line-height: 1;
    color: var(--color-ink);
    font-weight: 500;
    margin-bottom: var(--space-4);
    display: block;
    border: none;
    text-decoration: none;
}

.footer-brand img {
    display: block;
    height: 44px;
    width: auto;
}

.footer-tagline {
    font-size: 14px;
    line-height: 1.55;
    color: var(--color-ink-tertiary);
    max-width: 42ch;
    margin-bottom: var(--space-3);
}

.footer-col h4 {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-ink);
    margin: 0 0 var(--space-4);
}

.footer-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-col li {
    margin-bottom: var(--space-2);
}

.footer-col a {
    color: var(--color-ink-secondary);
    font-size: 13px;
    text-decoration: none;
    border: none;
    font-weight: 400;
}

.footer-col a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

.footer-social {
    list-style: none;
    margin: var(--space-4) 0 0;
    padding: 0;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-4);
}

.footer-social li {
    margin: 0;
    display: inline-flex;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-ink);
    text-decoration: none;
    border: none;
    transition: color var(--duration-fast) var(--ease-out);
}

.footer-social svg {
    display: block;
    fill: currentColor;
}

.footer-social a:hover,
.footer-social a:focus-visible {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: var(--space-5);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer-copyright {
    margin: 0;
    font-size: 12px;
    max-width: 64ch;
    color: var(--color-ink-tertiary);
    line-height: 1.55;
}

.footer-legal-links {
    display: flex;
    gap: var(--space-4);
    font-size: 12px;
}

.footer-legal-links a {
    color: var(--color-ink-tertiary);
    text-decoration: none;
    border: none;
}

.footer-legal-links a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* ─── Responsive ─── */
@media (max-width: 1200px) {
    .navbar-inner,
    .site-main .content-wrap,
    .site-main .content-wide,
    .footer-inner {
        padding-left: var(--content-pad-md);
        padding-right: var(--content-pad-md);
    }
    .hero-split {
        padding-left: var(--content-pad-md);
        padding-right: var(--content-pad-md);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .footer-grid > :first-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 1023px) {
    .navbar-nav,
    .navbar-actions {
        display: none;
    }
    .mobile-nav-toggle {
        display: block;
    }

    /* ─── Mobile off-canvas drawer ───────────────────────────
       The navbar itself stays as a fixed top bar at its normal
       height — it must NOT expand when open or the brand logo
       would shift. The drawer is two synchronized fixed panels
       that slide in from the right: .navbar-nav (the scrollable
       link list) on top, .navbar-actions (Contact + Log In) as
       a sticky action footer pinned to the bottom edge. */

    .site-navbar[data-mobile-open="true"] .navbar-nav {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        position: fixed;
        top: var(--navbar-height);
        right: 0;
        bottom: 0;
        width: min(88vw, 360px);
        margin: 0;
        padding: var(--space-5) var(--space-5) 140px;
        background: var(--surface-navbar);
        box-shadow: -24px 0 60px rgba(15, 18, 24, 0.12);
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        z-index: 95;
        animation: ebDrawerSlideIn 320ms cubic-bezier(0.16, 1, 0.3, 1);
    }

    .site-navbar[data-mobile-open="true"] .navbar-actions {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-3);
        position: fixed;
        right: 0;
        bottom: 0;
        width: min(88vw, 360px);
        margin: 0;
        padding: var(--space-4) var(--space-5) calc(var(--space-5) + env(safe-area-inset-bottom, 0px));
        background: var(--surface-navbar);
        border-top: 1px solid var(--border-subtle);
        border-left: none;
        z-index: 96;
        animation: ebDrawerSlideIn 320ms cubic-bezier(0.16, 1, 0.3, 1);
    }

    /* Top-level items: large tap targets, divider rule between */
    .site-navbar[data-mobile-open="true"] .navbar-nav > li {
        position: static;
        border-bottom: 1px solid var(--border-subtle);
        padding: 0;
    }
    .site-navbar[data-mobile-open="true"] .navbar-nav > li:last-child {
        border-bottom: none;
    }

    .site-navbar[data-mobile-open="true"] .navbar-item {
        display: flex;
        align-items: center;
        width: 100%;
        font-size: 16px;
        font-weight: 600;
        color: var(--color-ink);
        padding: var(--space-4) 0;
        letter-spacing: 0;
        text-align: left;
    }
    .site-navbar[data-mobile-open="true"] .navbar-item.has-dropdown::after {
        margin-left: auto;
        opacity: 0.5;
        transform: rotate(45deg) translateY(-2px);
        transition: transform var(--duration-normal) var(--ease-out);
    }
    .site-navbar[data-mobile-open="true"] .navbar-item.has-dropdown[aria-expanded="true"]::after {
        transform: rotate(225deg) translateY(-2px);
    }

    /* Dropdown sub-items: collapsed by default, animate height
       open when parent button has aria-expanded="true" */
    .site-navbar[data-mobile-open="true"] .navbar-dropdown {
        position: static;
        opacity: 0;
        visibility: hidden;
        transform: none;
        box-shadow: none;
        border: none;
        background: transparent;
        padding: 0 0 0 var(--space-2);
        margin: 0;
        min-width: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--duration-normal) var(--ease-out),
                    opacity var(--duration-fast) var(--ease-out),
                    padding-bottom var(--duration-normal) var(--ease-out),
                    visibility 0s linear var(--duration-normal);
    }
    .site-navbar[data-mobile-open="true"] .navbar-item.has-dropdown[aria-expanded="true"] + .navbar-dropdown {
        opacity: 1;
        visibility: visible;
        max-height: 600px;
        padding-bottom: var(--space-4);
        transition: max-height var(--duration-normal) var(--ease-out),
                    opacity var(--duration-fast) var(--ease-out) 80ms,
                    padding-bottom var(--duration-normal) var(--ease-out),
                    visibility 0s linear 0s;
    }
    .site-navbar[data-mobile-open="true"] .navbar-dropdown::before {
        display: none;
    }
    .site-navbar[data-mobile-open="true"] .navbar-dropdown li {
        margin: 0;
    }
    .site-navbar[data-mobile-open="true"] .navbar-dropdown a {
        display: block;
        padding: var(--space-2) var(--space-3);
        font-size: 14px;
        font-weight: 500;
        color: var(--color-ink-secondary);
        white-space: normal;
        line-height: 1.4;
        border-radius: var(--radius-sm);
    }
    .site-navbar[data-mobile-open="true"] .navbar-dropdown a small {
        display: block;
        margin-top: 2px;
        font-size: 12px;
        color: var(--color-ink-tertiary);
        font-weight: 400;
    }

    /* Action footer */
    .site-navbar[data-mobile-open="true"] .navbar-contact {
        font-size: 15px;
        font-weight: 500;
        text-align: center;
        padding: var(--space-3) 0;
        color: var(--color-ink-secondary);
    }
    .site-navbar[data-mobile-open="true"] .btn-login {
        justify-content: center;
        padding: 14px var(--space-4);
        font-size: 14px;
    }
}

@keyframes ebDrawerSlideIn {
    from { transform: translateX(100%); }
    to   { transform: translateX(0); }
}

@media (max-width: 640px) {
    :root {
        --content-pad-sm: 20px;
    }
    .navbar-inner,
    .site-main .content-wrap,
    .site-main .content-wide,
    .footer-inner {
        padding-left: var(--content-pad-sm);
        padding-right: var(--content-pad-sm);
    }
    .hero-split {
        padding-left: var(--content-pad-sm);
        padding-right: var(--content-pad-sm);
    }
    .site-main {
        padding: var(--space-3) 0 var(--space-7);
    }
    .breadcrumb {
        margin-bottom: var(--space-3);
    }
    .page-hero {
        padding: var(--space-2) 0 var(--space-5);
    }
    .page-hero h1 {
        margin-bottom: var(--space-3);
    }
    .page-hero .hero-description {
        font-size: 17px;
    }
    .eyebrow-rule {
        margin-bottom: var(--space-2);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid > :first-child {
        grid-column: 1 / -1;
    }
    .site-footer {
        padding-bottom: var(--space-7);
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
        padding-top: var(--space-4);
    }
    .footer-legal-links {
        display: flex;
        flex-wrap: wrap;
        column-gap: var(--space-5);
        row-gap: var(--space-3);
        width: 100%;
        font-size: 14px;
    }
    .footer-legal-links a {
        color: var(--color-ink-secondary);
        font-weight: 500;
        padding: var(--space-1) 0;
    }
}