/**
 * sinopak/header block styles — mirror of prototype .site-header / .nav /
 * .mega-panel / .language-switcher / .header-actions (+ polish pass).
 *
 * Fixed skin swap: the wrapper (.spk-x-header-part, inc/templates.php) stays
 * above the page content without occupying flow. The white skin is the
 * DEFAULT so the header is always readable; only pages that open with a dark
 * hero (body.spk-x-hero-top, set in inc/templates.php) get the transparent
 * "over the hero" skin, and only until body.spk-x-is-scrolled (view.js) fires.
 * The dual-logo swap follows the same condition.
 *
 * Breakpoints: 1180 / 760 (prototype @media breaks, no new ones).
 */
@layer spk-block {
  /* Template wrapper is the fixed-position mount point (no blue in-flow bar).
     The solid white skin is the DEFAULT — every page gets a readable header.
     Only pages that open with a dark hero (body.spk-x-hero-top) swap to the
     transparent "over the hero" skin, and only until the page is scrolled. */
  .spk-x-header-part {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    z-index: 90;
    background: rgba(255, 255, 255, 0.985);
    color: var(--wp--preset--color--ink, #122231);
    box-shadow: 0 1px 0 rgba(21, 36, 49, 0.1);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: background 0.22s ease, color 0.22s ease, box-shadow 0.22s ease,
      backdrop-filter 0.22s ease;
  }
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header-part {
    background: transparent;
    color: #fff;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .spk-x-header {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
    padding: 0 clamp(28px, 5.4vw, 88px);
    color: inherit;
    font-family: var(--wp--preset--font-family--primary, "Helvetica Neue", Arial, sans-serif);
    transition: min-height 0.22s ease;
  }
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header {
    min-height: 86px;
  }

  /* ── Brand: dual logo, opacity swap on skin change ── */
  .spk-x-header__brand {
    position: relative;
    display: block;
    width: 172px;
    aspect-ratio: 544 / 107;
    flex: 0 0 auto;
  }
  .spk-x-header__brand img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.2s ease;
    filter: none;
  }
  /* Default (white skin): the dark logo shows. */
  .spk-x-header__logo-light {
    opacity: 0;
  }
  .spk-x-header__logo-dark {
    opacity: 1;
  }
  /* Transparent-over-hero skin: light logo + drop-shadow for contrast. */
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header__brand img {
    filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.16));
  }
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header__logo-light {
    opacity: 1;
  }
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header__logo-dark {
    opacity: 0;
  }

  /* ── Primary nav ── */
  .spk-x-header__nav {
    display: flex;
    align-items: stretch;
    gap: 4px;
    font-size: 12px;
    font-weight: 850;
    letter-spacing: -0.018em;
    text-transform: uppercase;
  }
  .spk-x-nav-group {
    position: relative;
    display: flex;
    align-items: center;
  }
  .spk-x-nav-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 25px 13px;
    color: inherit;
    line-height: 1;
    white-space: nowrap;
  }
  body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-nav-trigger {
    padding: 32px 13px;
  }
  .spk-x-nav-trigger::after {
    position: absolute;
    right: 13px;
    bottom: 23px;
    left: 13px;
    height: 2px;
    content: "";
    background: var(--wp--preset--color--orange, #f28a2e);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.18s ease;
  }
  .spk-x-nav-trigger:hover::after,
  .spk-x-nav-trigger:focus-visible::after,
  .spk-x-nav-trigger.spk-x-active::after,
  .spk-x-nav-group:hover .spk-x-nav-trigger::after,
  .spk-x-nav-group:focus-within .spk-x-nav-trigger::after {
    transform: scaleX(1);
  }
  .spk-x-nav-trigger svg {
    width: 10px;
    height: 10px;
    stroke: currentColor;
    stroke-width: 2.3;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.72;
    transition: transform 0.18s ease;
  }
  .spk-x-nav-group:hover .spk-x-nav-trigger svg,
  .spk-x-nav-group:focus-within .spk-x-nav-trigger svg {
    transform: rotate(180deg);
  }

  /* ── Mega panel (hover / focus-within reveal) ── */
  .spk-x-mega {
    position: absolute;
    top: 100%;
    left: 50%;
    width: min(880px, calc(100vw - 88px));
    padding: 30px;
    display: grid;
    grid-template-columns: 0.74fr 1.26fr;
    gap: 34px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(22px) saturate(1.18);
    -webkit-backdrop-filter: blur(22px) saturate(1.18);
    color: var(--wp--preset--color--ink, #122231);
    text-transform: none;
    border: 1px solid rgba(219, 229, 236, 0.95);
    border-top: 3px solid var(--wp--preset--color--orange, #f28a2e);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.1);
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transform: translate(-50%, 12px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  }
  /* hover bridge so the pointer can travel from trigger to panel */
  .spk-x-mega::before {
    position: absolute;
    top: -13px;
    right: 0;
    left: 0;
    height: 13px;
    content: "";
  }
  .spk-x-nav-group:hover .spk-x-mega,
  .spk-x-nav-group:focus-within .spk-x-mega {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: translate(-50%, 0);
  }
  /* First item's panel pins left; the last two pin right (prototype rule) */
  .spk-x-nav-group:first-child .spk-x-mega {
    left: 0;
    transform: translate(0, 12px);
  }
  .spk-x-nav-group:first-child:hover .spk-x-mega,
  .spk-x-nav-group:first-child:focus-within .spk-x-mega {
    transform: translate(0, 0);
  }
  .spk-x-nav-group:nth-last-child(-n + 2) .spk-x-mega {
    right: 0;
    left: auto;
    transform: translate(0, 12px);
  }
  .spk-x-nav-group:nth-last-child(-n + 2):hover .spk-x-mega,
  .spk-x-nav-group:nth-last-child(-n + 2):focus-within .spk-x-mega {
    transform: translate(0, 0);
  }

  /* Layout variants derived from group count */
  .spk-x-mega--compact {
    width: min(700px, calc(100vw - 88px));
    grid-template-columns: 0.85fr 1.15fr;
  }
  .spk-x-mega--wide {
    width: min(1120px, calc(100vw - 88px));
    grid-template-columns: 0.36fr 0.64fr;
  }
  .spk-x-mega--wide .spk-x-mega__intro {
    min-height: 310px;
  }
  .spk-x-mega--wide .spk-x-mega__groups {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px 26px;
  }
  .spk-x-mega--wide.spk-x-mega--cols-2 .spk-x-mega__groups {
    grid-template-columns: 1fr 1fr;
  }
  .spk-x-mega--wide .spk-x-mega__group a {
    padding: 10px 0;
    font-size: 14px;
    line-height: 1.25;
  }
  .spk-x-mega--wide .spk-x-mega__group h3 {
    margin-bottom: 10px;
  }
  /* Banner variant (4+ groups — prototype .mega-machines) */
  .spk-x-mega--banner {
    left: 50%;
    width: min(1240px, calc(100vw - 88px));
    grid-template-columns: 1fr;
    gap: 22px;
    max-height: calc(100vh - 118px);
    overflow-y: auto;
    transform: translate(-40%, 12px);
  }
  .spk-x-nav-group:hover .spk-x-mega--banner,
  .spk-x-nav-group:focus-within .spk-x-mega--banner {
    transform: translate(-40%, 0);
  }
  .spk-x-mega--banner .spk-x-mega__intro {
    min-height: auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: end;
    border-right: 0;
    border-bottom: 1px solid var(--wp--preset--color--line, #dbe5ec);
    padding: 0 0 18px;
  }
  .spk-x-mega--banner .spk-x-mega__intro strong {
    max-width: 620px;
    margin-top: 8px;
    font-size: clamp(22px, 1.7vw, 28px);
  }
  .spk-x-mega--banner .spk-x-mega__intro p {
    max-width: 620px;
    margin-top: 10px;
  }
  .spk-x-mega--banner .spk-x-mega__cta {
    margin-top: 0;
    white-space: nowrap;
  }
  .spk-x-mega--banner .spk-x-mega__groups {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 24px;
  }
  .spk-x-mega--banner .spk-x-mega__group a {
    padding: 8px 0;
    font-size: 13px;
    line-height: 1.22;
  }

  /* ── Categories layout (prototype .mega-machines) ──
     Intro column (left) + icon category grid (right). The intro is a block
     (not the grid the other variants use), sized to match the taller grid. */
  .spk-x-mega--machines {
    left: 50%;
    width: min(1120px, calc(100vw - 64px));
    min-height: 0;
    padding: 0;
    grid-template-columns: 0.36fr 0.64fr;
    gap: 0;
    overflow: hidden;
    background: rgba(248, 251, 253, 0.985);
    transform: translate(-22%, 12px);
  }
  .spk-x-nav-group:hover .spk-x-mega--machines,
  .spk-x-nav-group:focus-within .spk-x-mega--machines {
    transform: translate(-22%, 0);
  }
  .spk-x-mega--machines .spk-x-mega__intro {
    position: relative;
    display: block;
    min-height: 480px;
    border-right: 1px solid var(--wp--preset--color--line, #dbe5ec);
    padding: 36px 38px 32px;
    overflow: hidden;
  }
  /* Oversized ghost word behind the intro copy (item title via inline var). */
  .spk-x-mega--machines .spk-x-mega__intro::after {
    position: absolute;
    bottom: -18px;
    left: -8px;
    content: var(--spk-mega-watermark, "");
    color: rgba(6, 43, 92, 0.036);
    font-size: 118px;
    font-weight: 950;
    line-height: 0.78;
    letter-spacing: -0.09em;
    pointer-events: none;
  }
  .spk-x-mega--machines .spk-x-mega__intro span {
    font-size: 12px;
    letter-spacing: 0.22em;
  }
  .spk-x-mega--machines .spk-x-mega__intro strong {
    position: relative;
    z-index: 1;
    display: block;
    max-width: 350px;
    margin-top: 24px;
    font-size: 35px;
    line-height: 1.08;
    letter-spacing: -0.052em;
  }
  .spk-x-mega--machines .spk-x-mega__intro p {
    position: relative;
    z-index: 1;
    max-width: 345px;
    margin-top: 24px;
    color: #647487;
    font-size: 15px;
    font-weight: 740;
    line-height: 1.52;
  }
  .spk-x-mega--machines .spk-x-mega__cta {
    position: relative;
    z-index: 1;
    min-height: 46px;
    margin-top: 32px;
    align-items: center;
    justify-content: center;
    padding: 0 21px;
    border-color: #c5d9e8;
    border-radius: 10px;
    font-size: 12px;
    letter-spacing: 0.15em;
    white-space: nowrap;
  }
  .spk-x-mega__cats {
    padding: 36px 40px 32px;
  }
  .spk-x-mega__cats-title {
    margin: 0;
    color: var(--wp--preset--color--navy, #06366b);
    font-size: 23px;
    font-weight: 950;
    line-height: 1;
    letter-spacing: 0.17em;
    text-transform: uppercase;
  }
  .spk-x-mega__cats-rule {
    height: 1px;
    margin: 20px 0;
    background: var(--wp--preset--color--line, #dbe5ec);
  }
  .spk-x-mega__cat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 11px 34px;
  }
  .spk-x-mega__cat {
    min-height: 52px;
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) auto;
    align-items: center;
    gap: 15px;
    color: #50637a;
    transition: color 0.18s ease, transform 0.18s ease;
  }
  .spk-x-mega__cat:hover,
  .spk-x-mega__cat:focus-visible {
    color: var(--wp--preset--color--navy, #06366b);
    transform: translateX(4px);
  }
  .spk-x-mega__cat-icon {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 22%, #fbfdff 0%, #edf5fa 52%, #e7f0f7 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), 0 7px 18px rgba(6, 43, 92, 0.04);
  }
  .spk-x-mega__cat-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--wp--preset--color--navy, #06366b);
    stroke-width: 1.9;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
  }
  .spk-x-mega__cat strong {
    color: currentColor;
    font-size: 15.5px;
    font-weight: 900;
    line-height: 1.18;
    letter-spacing: -0.025em;
  }
  .spk-x-mega__cat-arrow {
    color: var(--wp--preset--color--navy, #06366b);
    font-size: 18px;
    font-weight: 760;
    line-height: 1;
  }

  /* Intro column */
  .spk-x-mega__intro {
    display: grid;
    align-content: space-between;
    min-height: 250px;
    border-right: 1px solid var(--wp--preset--color--line, #dbe5ec);
    padding-right: 28px;
  }
  .spk-x-mega__intro span {
    color: var(--wp--preset--color--orange, #f28a2e);
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }
  .spk-x-mega__intro strong {
    display: block;
    margin-top: 12px;
    color: var(--wp--preset--color--navy, #06366b);
    font-size: clamp(24px, 2vw, 34px);
    line-height: 1.02;
    letter-spacing: -0.045em;
    text-transform: none;
  }
  .spk-x-mega__intro p {
    margin: 18px 0 0;
    font-size: 14px;
    line-height: 1.58;
    color: var(--wp--preset--color--muted, #637381);
  }
  .spk-x-mega__cta {
    align-self: end;
    display: inline-flex;
    width: fit-content;
    margin-top: 22px;
    border: 1px solid var(--wp--preset--color--line, #dbe5ec);
    border-radius: 10px;
    padding: 12px 14px;
    color: var(--wp--preset--color--navy, #06366b);
    font-size: 12px;
    font-weight: 950;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
  }
  .spk-x-mega__cta:hover,
  .spk-x-mega__cta:focus-visible {
    border-color: var(--wp--preset--color--navy, #06366b);
    background: var(--wp--preset--color--navy, #06366b);
    color: #fff;
  }

  /* Link groups */
  .spk-x-mega__groups {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 30px;
  }
  .spk-x-mega--compact .spk-x-mega__groups,
  .spk-x-mega--cols-1 .spk-x-mega__groups {
    grid-template-columns: 1fr;
  }
  .spk-x-mega__group {
    min-width: 0;
  }
  .spk-x-mega__group h3 {
    margin: 0 0 12px;
    color: var(--wp--preset--color--navy, #06366b);
    font-size: 12px;
    font-weight: 950;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }
  .spk-x-mega__group a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    border-top: 1px solid var(--wp--preset--color--line, #dbe5ec);
    padding: 13px 0;
    color: #415365;
    font-size: 15px;
    font-weight: 720;
    letter-spacing: -0.01em;
    text-transform: none;
    transition: color 0.18s ease, transform 0.18s ease;
  }
  .spk-x-mega__group a::after {
    content: "→";
    color: var(--wp--preset--color--orange, #f28a2e);
    font-family: var(--wp--preset--font-family--condensed, "Arial Narrow", Arial, sans-serif);
    font-weight: 950;
    opacity: 0;
    transform: translateX(-4px);
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  .spk-x-mega__group a:hover,
  .spk-x-mega__group a:focus-visible {
    color: var(--wp--preset--color--navy, #06366b);
    transform: translateX(3px);
  }
  .spk-x-mega__group a:hover::after,
  .spk-x-mega__group a:focus-visible::after {
    opacity: 1;
    transform: translateX(0);
  }
  .spk-x-mega__note {
    display: block;
    margin-top: 10px;
    color: #8a97a3;
    font-size: 12px;
    line-height: 1.45;
  }
  .spk-x-mega__feature {
    position: relative;
    overflow: hidden;
    min-height: 112px;
    display: grid;
    align-content: end;
    margin-top: 10px;
    padding: 18px;
    color: #fff;
    background: var(--wp--preset--color--deep, #06244a);
  }
  .spk-x-mega__feature img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.48;
  }
  .spk-x-mega__feature::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, rgba(2, 23, 51, 0.82), rgba(2, 23, 51, 0.28));
  }
  .spk-x-mega__feature span {
    position: relative;
    z-index: 1;
    font-size: 11px;
    font-weight: 950;
    letter-spacing: 0.14em;
    text-transform: uppercase;
  }

  /* ── Actions: language switcher + CTA + mobile toggle ── */
  .spk-x-header__actions {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .spk-x-lang {
    position: relative;
  }
  .spk-x-lang__button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    height: 42px;
    border: 0;
    border-radius: 8px;
    padding: 0 8px;
    background: transparent;
    color: inherit;
    font-family: inherit;
    font-size: 13px;
    font-weight: 850;
    letter-spacing: -0.01em;
    cursor: pointer;
  }
  .spk-x-lang__globe {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 1.8;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0.92;
  }
  .spk-x-lang__chevron {
    width: 11px;
    height: 11px;
    stroke: currentColor;
    stroke-width: 2.4;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 0.18s ease;
  }
  .spk-x-lang.spk-x-lang--open .spk-x-lang__chevron {
    transform: rotate(180deg);
  }
  .spk-x-lang:hover .spk-x-lang__chevron,
  .spk-x-lang:focus-within .spk-x-lang__chevron {
    transform: rotate(180deg);
  }
  .spk-x-lang__menu {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    z-index: 30;
    min-width: 108px;
    margin: 0;
    min-width: 148px;
    list-style: none;
    padding: 7px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--wp--preset--color--ink, #122231);
    border: 1px solid var(--wp--preset--color--line, #dbe5ec);
    border-radius: 10px;
    box-shadow: 0 20px 56px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(22px) saturate(1.18);
    -webkit-backdrop-filter: blur(22px) saturate(1.18);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: 0.18s ease;
  }
  .spk-x-lang:hover .spk-x-lang__menu,
  .spk-x-lang:focus-within .spk-x-lang__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .spk-x-lang__menu button {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    border: 0;
    background: transparent;
    text-align: left;
    border-radius: 7px;
    padding: 8px;
    color: var(--wp--preset--color--muted, #637381);
    font-family: var(--wp--preset--font-family--condensed, "Arial Narrow", Arial, sans-serif);
    font-size: 13px;
    font-weight: 850;
    letter-spacing: 0.04em;
    cursor: pointer;
  }
  .spk-x-lang__menu button:hover {
    background: rgba(242, 138, 46, 0.09);
    color: var(--wp--preset--color--orange, #f28a2e);
  }
  .spk-x-lang__short {
    display: inline-grid;
    place-items: center;
    min-width: 26px;
    height: 19px;
    border-radius: 5px;
    background: var(--wp--preset--color--line, #dbe5ec);
    color: var(--wp--preset--color--muted, #637381);
    font-family: inherit;
    font-size: 10px;
    font-weight: 900;
    letter-spacing: 0.05em;
  }
  .spk-x-lang__menu button.spk-x-active {
    color: var(--wp--preset--color--ink, #122231);
  }
  .spk-x-lang__menu button.spk-x-active .spk-x-lang__short {
    background: rgba(242, 138, 46, 0.14);
    color: var(--wp--preset--color--orange, #f28a2e);
  }
  .spk-x-lang__menu button.spk-x-active::after {
    content: "✓";
    margin-left: auto;
    font-size: 12px;
    font-weight: 900;
  }

  /* CTA — inquiry modal trigger (prototype .cta + header override + polish) */
  .spk-x-header__cta {
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 0;
    border-radius: 10px;
    padding: 13px 22px;
    background: var(--wp--preset--color--orange, #f28a2e);
    color: #fff;
    font-family: inherit;
    font-size: 12px;
    font-weight: 950;
    letter-spacing: 0.055em;
    text-transform: uppercase;
    white-space: nowrap;
    cursor: pointer;
    transition: transform 0.18s ease, background 0.18s ease;
  }
  .spk-x-header__cta:hover,
  .spk-x-header__cta:focus-visible {
    transform: translateY(-1px);
    background: #ff8d2c;
  }
  .spk-x-header__cta::after {
    position: absolute;
    inset: 0;
    content: "";
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.24), transparent);
    transform: translateX(-120%);
    transition: transform 0.5s ease;
  }
  .spk-x-header__cta:hover::after,
  .spk-x-header__cta:focus-visible::after {
    transform: translateX(120%);
  }
  /* Drawer copy of the CTA lives inside the nav — desktop hides it */
  .spk-x-header__cta--drawer {
    display: none;
  }

  /* Mobile-only controls: hidden on desktop */
  .spk-x-menu-toggle {
    display: none;
  }
  .spk-x-subnav-toggle {
    display: none;
  }
}

@layer spk-responsive {
  @media (max-width: 1180px) {
    /* Header is always on the white skin below the nav breakpoint — this
       spk-responsive rule wins over the spk-block transparent skin by layer
       order, so even hero-top pages stay solid on mobile. */
    .spk-x-header-part,
    body.spk-x-hero-top:not(.spk-x-is-scrolled) .spk-x-header-part {
      background: rgba(255, 255, 255, 0.985);
      color: var(--wp--preset--color--ink, #122231);
      box-shadow: 0 1px 0 rgba(21, 36, 49, 0.1);
    }
    .spk-x-header {
      min-height: 76px;
    }
    .spk-x-header__brand img {
      filter: none;
    }
    .spk-x-header__logo-light {
      opacity: 0;
    }
    .spk-x-header__logo-dark {
      opacity: 1;
    }

    /* Hamburger (JS-gated: without JS the nav stays visible in flow) */
    body.spk-x-js .spk-x-menu-toggle {
      display: inline-flex;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      padding: 0 11px;
      border: 0;
      border-radius: 6px;
      background: transparent;
      cursor: pointer;
    }
    body.spk-x-js .spk-x-menu-toggle span {
      display: block;
      height: 2px;
      border-radius: 1px;
      background: currentColor;
    }

    /* Drawer panel under the sticky header: inner scroll + page scroll lock */
    body.spk-x-js .spk-x-header__nav {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      z-index: 40;
      display: none;
      flex-direction: column;
      align-items: stretch;
      gap: 0;
      padding: 10px 28px 28px;
      background: #fff;
      color: var(--wp--preset--color--ink, #122231);
      border-top: 1px solid var(--wp--preset--color--line, #dbe5ec);
      box-shadow: 0 24px 40px rgba(15, 23, 42, 0.14);
      max-height: calc(100vh - 76px);
      max-height: calc(100dvh - 76px);
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }
    body.spk-x-js.spk-x-open .spk-x-header__nav {
      display: flex;
    }
    body.spk-x-js.spk-x-open {
      overflow: hidden;
    }

    /* Drawer typography (prototype .mobile-panel a) */
    .spk-x-header__nav {
      font-size: 14px;
    }
    body.spk-x-js .spk-x-header__nav > .spk-x-nav-trigger {
      border-bottom: 1px solid var(--wp--preset--color--line, #dbe5ec);
      padding: 16px 0;
      font-weight: 950;
      text-transform: uppercase;
    }
    body.spk-x-js .spk-x-nav-group {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
    }
    body.spk-x-js .spk-x-nav-group .spk-x-nav-trigger {
      flex: 1;
      border-bottom: 1px solid var(--wp--preset--color--line, #dbe5ec);
      padding: 16px 0;
      font-weight: 950;
      text-transform: uppercase;
    }
    body.spk-x-js .spk-x-nav-trigger::after {
      content: none;
    }
    body.spk-x-js .spk-x-nav-trigger svg {
      display: none;
    }
    body.spk-x-js .spk-x-subnav-toggle {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 44px;
      height: 44px;
      border: 0;
      background: transparent;
      color: inherit;
      cursor: pointer;
    }
    body.spk-x-js .spk-x-subnav-toggle span {
      display: block;
      width: 10px;
      height: 10px;
      border-right: 2px solid currentColor;
      border-bottom: 2px solid currentColor;
      transform: rotate(45deg);
      transition: transform 0.15s ease;
    }
    body.spk-x-js .spk-x-nav-group.spk-x-open .spk-x-subnav-toggle span {
      transform: rotate(-135deg);
    }

    /* Mega panel → plain accordion: link groups only, no intro/feature */
    body.spk-x-js .spk-x-mega {
      position: static;
      display: none;
      flex-basis: 100%;
      width: auto;
      min-width: 0;
      max-height: none;
      padding: 4px 0 12px 14px;
      grid-template-columns: 1fr;
      gap: 14px;
      border: 0;
      background: transparent;
      box-shadow: none;
      backdrop-filter: none;
      -webkit-backdrop-filter: none;
      opacity: 1;
      visibility: visible;
      pointer-events: auto;
      transform: none;
      transition: none;
      overflow: visible;
    }
    body.spk-x-js .spk-x-nav-group.spk-x-open .spk-x-mega {
      display: grid;
    }
    body.spk-x-js .spk-x-mega::before {
      content: none;
    }
    body.spk-x-js .spk-x-mega__intro,
    body.spk-x-js .spk-x-mega__feature {
      display: none;
    }
    body.spk-x-js .spk-x-mega__groups {
      grid-template-columns: 1fr;
      gap: 14px;
    }
    body.spk-x-js .spk-x-mega__group h3 {
      margin-bottom: 4px;
    }
    body.spk-x-js .spk-x-mega__group a {
      padding: 9px 0;
      font-size: 14px;
      border-top: 0;
      border-bottom: 1px solid var(--wp--preset--color--line, #dbe5ec);
    }

    /* Categories layout → flat accordion rows (compact icon + label) */
    body.spk-x-js .spk-x-mega--machines {
      grid-template-columns: 1fr;
      background: transparent;
    }
    body.spk-x-js .spk-x-mega__cats {
      padding: 0;
    }
    body.spk-x-js .spk-x-mega__cats-title {
      margin: 0 0 4px;
      font-size: 12px;
      letter-spacing: 0.16em;
    }
    body.spk-x-js .spk-x-mega__cats-rule {
      display: none;
    }
    body.spk-x-js .spk-x-mega__cat-grid {
      grid-template-columns: 1fr;
      gap: 0;
    }
    body.spk-x-js .spk-x-mega__cat {
      min-height: 0;
      grid-template-columns: 26px minmax(0, 1fr);
      gap: 12px;
      padding: 9px 0;
      border-bottom: 1px solid var(--wp--preset--color--line, #dbe5ec);
    }
    body.spk-x-js .spk-x-mega__cat-icon {
      width: 26px;
      height: 26px;
      box-shadow: none;
    }
    body.spk-x-js .spk-x-mega__cat-icon svg {
      width: 15px;
      height: 15px;
    }
    body.spk-x-js .spk-x-mega__cat strong {
      font-size: 14px;
      font-weight: 720;
    }
    body.spk-x-js .spk-x-mega__cat-arrow {
      display: none;
    }

    /* Drawer CTA (prototype .mobile-panel .cta) */
    body.spk-x-js .spk-x-header__cta--drawer {
      display: inline-flex;
      margin-top: 18px;
      align-self: stretch;
      justify-content: center;
      padding: 15px 23px;
    }
  }

  @media (max-width: 760px) {
    .spk-x-header__brand {
      width: 142px;
    }
    /* Prototype hides the top-bar CTA on phones; the drawer CTA remains */
    .spk-x-header__actions > .spk-x-header__cta {
      display: none;
    }
  }
}