/* ==========================================================================
   Base: reset, tones, typography, layout primitives, utilities, site chrome
   ========================================================================== */

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: calc(var(--header-h) + 16px); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }
body, h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd, ul, ol { margin: 0; }
:where(ul[class], ol[class]) { padding: 0; list-style: none; }
img, svg, video, picture { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; letter-spacing: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
table { border-collapse: collapse; border-spacing: 0; }

/* ---- tones: every section sets its surface + text colours as variables ---- */
body, .tone-black {
  --surface: var(--black);
  --text: var(--white);
  --heading: var(--white);
  --muted: var(--light-grey);
  --accent: var(--primary);
  --accent-large: var(--secondary);
  --link: var(--secondary);
  --card: var(--dark);
  --card-alt: var(--dark-grey);
  --border: var(--dark-grey);
  --input-bg: var(--dark);
}
.tone-dark {
  --surface: var(--dark);
  --text: var(--white);
  --heading: var(--white);
  --muted: var(--light-grey);
  --accent: var(--primary);
  --accent-large: var(--secondary);
  --link: var(--secondary);
  --card: var(--dark-grey);
  --card-alt: var(--black);
  --border: #333;
  --input-bg: var(--dark-grey);
}
.tone-dark-grey {
  --surface: var(--dark-grey);
  --text: var(--white);
  --heading: var(--white);
  --muted: var(--light-grey);
  --accent: var(--primary);
  --accent-large: var(--secondary);
  --link: var(--secondary);
  --card: var(--dark);
  --card-alt: var(--black);
  --border: #333;
  --input-bg: var(--dark);
}
.tone-white, .tone-light {
  --surface: var(--white);
  --text: var(--black);
  --heading: var(--black);
  --muted: var(--grey);
  --accent: var(--accent-small-on-light);
  --accent-large: var(--accent-large-on-light);
  --link: var(--accent-small-on-light);
  --card: var(--white);
  --card-alt: var(--light);
  --border: var(--grey-helper);
  --input-bg: var(--light);
}
.tone-light { --surface: var(--light); --input-bg: var(--white); }

body {
  margin: 0;
  background: var(--black);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: var(--lh-body);
  letter-spacing: var(--tracking);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
main { display: block; outline: none; }
.tone-black, .tone-dark, .tone-dark-grey, .tone-white, .tone-light { background-color: var(--surface); color: var(--text); }

/* ---- typography ---- */
h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 { color: var(--heading); font-family: var(--font-sans); text-wrap: pretty; }
h1, .h1 { font-size: var(--fs-h1); font-weight: 700; line-height: var(--lh-heading); margin-bottom: 20px; }
h2, .h2 { font-size: var(--fs-h2); font-weight: 700; line-height: var(--lh-heading); margin-bottom: 20px; }
h3, .h3 { font-size: var(--fs-h3); font-weight: 700; line-height: var(--lh-heading); margin-bottom: 20px; }
h4, .h4 { font-size: var(--fs-h4); font-weight: 500; line-height: 1.3; margin-bottom: 10px; }
h5, .h5 { font-size: var(--fs-h5); font-weight: 500; line-height: 1.3; margin-bottom: 10px; }
h6, .h6 { font-size: var(--fs-h6); font-weight: 500; line-height: 1.4; margin-bottom: 10px; }
p { margin-bottom: 20px; }
p:last-child { margin-bottom: 0; }
a { color: var(--link); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
strong, b { font-weight: 700; }
small { font-size: var(--fs-small); }
hr { border: 0; border-top: 1px solid var(--border); margin: 30px 0; }
code, kbd, samp { font-family: var(--font-code); font-size: .95em; }
::selection { background: var(--primary); color: var(--black); }

:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.tone-white :focus-visible, .tone-light :focus-visible { outline-color: var(--accent-small-on-light); }

/* ---- layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container--narrow { max-width: calc(var(--container-narrow) + 2 * var(--gutter)); }
.container--text { max-width: calc(var(--container-text) + 2 * var(--gutter)); }

.section { padding-block: var(--section-y); position: relative; }
.section--tight { padding-block: calc(var(--section-y) / 2); }
.section--flush-top { padding-top: 0; }
.section--flush-bottom { padding-bottom: 0; }
.section--clip { overflow: hidden; }

.grid { display: grid; gap: var(--grid-gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--5-7 { grid-template-columns: 5fr 7fr; }
.grid--gap-lg { gap: 40px; }
.grid--center { align-items: center; }
@media (max-width: 991px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
  .grid--2, .grid--3, .grid--4, .grid--7-5, .grid--5-7 { grid-template-columns: minmax(0, 1fr); }
}

/* ---- utilities ---- */
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 16px; top: -100px; z-index: calc(var(--z-header) + 1);
  background: var(--primary); color: var(--black); padding: 10px 16px; font-weight: 500;
}
.skip-link:focus { top: 8px; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-accent { color: var(--accent-large); }
.text-muted { color: var(--muted); }
.text-lead { font-size: var(--fs-lead); }
.text-medium { font-size: var(--fs-medium); }
.text-small { font-size: var(--fs-small); }
.text-xsmall { font-size: var(--fs-xsmall); }
.text-mono { font-family: var(--font-mono); letter-spacing: var(--tracking-mono); }
.fw-500 { font-weight: 500; }
.fw-700 { font-weight: 700; }
.mx-auto { margin-inline: auto; }
.max-w-text { max-width: var(--container-text); }
.max-w-narrow { max-width: var(--container-narrow); }
.mt-0 { margin-top: 0; } .mt-1 { margin-top: 10px; } .mt-2 { margin-top: 20px; } .mt-3 { margin-top: 40px; } .mt-4 { margin-top: 60px; }
.mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 10px; } .mb-2 { margin-bottom: 20px; } .mb-3 { margin-bottom: 40px; } .mb-4 { margin-bottom: 60px; }
.stack > * + * { margin-top: 20px; }

/* ==========================================================================
   Site header + navigation
   ========================================================================== */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  height: var(--header-h);
  background: var(--black);
  border-bottom: 1px solid var(--dark-grey);
  color: var(--white);
}
.site-header__inner { height: 100%; display: flex; align-items: center; gap: 24px; max-width: calc(1260px + 2 * var(--gutter)); }
.site-header__brand { flex: none; display: block; margin-right: 14px; }
.site-header__brand img { height: 50px; width: auto; }
.site-nav { flex: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 100%; }
.site-nav__list { display: flex; align-items: stretch; height: 100%; margin-inline: auto; }
.site-nav__item { display: flex; }
.site-nav__link {
  display: inline-flex; align-items: center; gap: 6px;
  height: var(--header-h); padding: 0 12px; margin-bottom: -1px;
  background: none; border: 0; border-bottom: 2px solid transparent;
  color: var(--white); font-size: 14px; font-weight: 500; letter-spacing: var(--tracking);
  text-decoration: none; white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}
.site-nav__link:hover, .site-nav__link[aria-expanded="true"] { color: var(--primary); border-bottom-color: var(--secondary); text-decoration: none; }
.site-nav__link.is-active, .site-nav__link[aria-current="page"] { color: var(--primary); }
.site-nav__chevron { transition: transform var(--transition); }
.site-nav__toggle[aria-expanded="true"] .site-nav__chevron { transform: rotate(180deg); }
.site-nav__actions { display: flex; align-items: center; gap: 16px; flex: none; }

/* product mega-dropdown */
.nav-dropdown {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--black); border-bottom: 1px solid var(--dark-grey);
  padding: 40px 0 20px;
  box-shadow: 0 30px 40px rgba(0, 0, 0, .35);
}
.nav-dropdown { display: none; }
.has-dropdown.is-open > .nav-dropdown { display: block; animation: nr-drop .18s ease-out; }
@keyframes nr-drop { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .has-dropdown.is-open > .nav-dropdown { animation: none; } }
.nav-dropdown__inner { text-align: center; }
.nav-dropdown__title { margin-bottom: 20px; }
.nav-dropdown__grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 40px; text-align: left; }

.nav-card {
  display: flex; align-items: flex-start; gap: 14px; height: 100%;
  padding: 20px; border: 1px solid var(--dark-grey); background: rgba(255, 255, 255, .03);
  color: var(--white); text-decoration: none;
  transition: border-color var(--transition), background-color var(--transition);
}
.nav-card:hover { border-color: var(--grey); background: var(--dark); text-decoration: none; }
.nav-card__icon { flex: none; width: 100px; height: auto; }
.nav-card__body { display: flex; flex-direction: column; gap: 10px; }
.nav-card__title { font-size: 18px; font-weight: 500; color: var(--white); }
.nav-card__text { font-size: 14px; color: var(--light-grey); }
.nav-card__more { font-size: 14px; color: var(--primary); }

/* language switcher */
.lang-switch { display: flex; align-items: center; gap: 2px; font-family: var(--font-mono); font-size: 12px; letter-spacing: var(--tracking-mono); }
.lang-switch__link {
  display: inline-block; padding: 4px 6px; color: var(--light-grey); border: 1px solid transparent; border-radius: var(--radius-sm);
  text-decoration: none; transition: color var(--transition), border-color var(--transition);
}
.lang-switch__link:hover { color: var(--white); text-decoration: none; border-color: var(--dark-grey); }
.lang-switch__link.is-active { color: var(--primary); }
.lang-switch li + li::before { content: "/"; color: var(--grey); margin-right: 2px; }
.lang-switch li { display: flex; align-items: center; }

/* mobile toggle */
.nav-toggle {
  display: none; margin-left: auto; width: 43px; height: 43px; padding: 0;
  background: transparent; border: 0; color: var(--white); border-radius: var(--radius-sm);
  position: relative;
}
.nav-toggle:hover { background: rgba(255, 255, 255, .05); }
.nav-toggle__icon, .nav-toggle__icon::before, .nav-toggle__icon::after {
  position: absolute; left: 50%; width: 20px; height: 2px; margin-left: -10px; background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle__icon { top: 50%; margin-top: -1px; }
.nav-toggle__icon::before, .nav-toggle__icon::after { content: ""; left: 0; margin-left: 0; }
.nav-toggle__icon::before { top: -7px; }
.nav-toggle__icon::after { top: 7px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 1199px) {
  .site-header__brand img { height: 40px; }
  .site-header__inner { gap: 12px; }
  .site-nav__link { padding: 0 9px; }
}

@media (max-width: 991px) {
  .site-header__brand img { height: 40px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; inset: var(--header-h) 0 0 0; z-index: var(--z-header);
    flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0;
    height: auto; padding: 20px var(--gutter) 40px; overflow-y: auto; overscroll-behavior: contain;
    background: var(--black);
  }
  .site-nav:not(.is-open) { display: none; }
  .site-nav__list { flex-direction: column; height: auto; margin: 0; }
  .site-nav__item { flex-direction: column; }
  .site-nav__link {
    width: 100%; height: auto; padding: 16px 0; margin: 0; justify-content: space-between;
    border-bottom: 1px solid var(--dark-grey); font-size: 16px;
  }
  .site-nav__link:hover, .site-nav__link[aria-expanded="true"] { border-bottom-color: var(--dark-grey); }
  .nav-dropdown { position: static; box-shadow: none; border: 0; padding: 20px 0 10px; background: transparent; }
  .nav-dropdown__inner { padding: 0; }
  .nav-dropdown__grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .nav-card { padding: 14px; }
  .nav-card__icon { width: 64px; }
  .site-nav__actions { flex-direction: column; align-items: stretch; gap: 20px; padding-top: 28px; }
  .site-nav__actions .lang-switch { justify-content: center; font-size: 14px; }
  .site-nav__cta { width: 100%; }
  body.nav-open { overflow: hidden; }
}
@media (max-width: 479px) {
  .site-header__brand img { height: 34px; }
  .nav-card { flex-direction: column; }
}

/* ==========================================================================
   Site footer
   ========================================================================== */
.site-footer {
  background: var(--black); color: var(--white);
  border-top: 1px solid var(--dark-grey);
  padding-top: 60px;
  font-size: var(--fs-small);
}
.site-footer__grid { display: grid; grid-template-columns: 6fr 2fr 2fr 2fr; gap: 20px; padding-inline: 40px; }
.site-footer__brand img { width: 280px; height: auto; }
.site-footer__col { text-align: center; }
.site-footer__heading {
  margin: 0 0 20px; color: var(--primary);
  font-family: var(--font-mono); font-size: 14px; font-weight: 400; line-height: 1.6; letter-spacing: 1px;
  text-transform: none;
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; }
.site-footer__col li { margin-bottom: 10px; }
.site-footer a { color: var(--white); transition: color var(--transition); }
.site-footer a:hover { color: var(--primary); text-decoration: none; }
.site-footer__legal {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 20px;
  margin-top: 40px; padding: 20px 0 24px; border-top: 1px solid var(--dark);
}
.site-footer__legal-links { list-style: none; padding: 0; margin: 0; text-align: right; font-size: var(--fs-xsmall); line-height: 1.6; }
.site-footer__legal-links li { color: var(--grey); }
.site-footer .site-footer__legal-links a { color: var(--grey); }
.site-footer .site-footer__legal-links a:hover { color: var(--white); }
.lang-switch--footer .lang-switch__link { color: var(--grey); }
@media (max-width: 991px) {
  .site-footer__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); padding-inline: 0; }
  .site-footer__brand { grid-column: 1 / -1; margin-bottom: 20px; }
}
@media (max-width: 767px) {
  .site-footer__grid { grid-template-columns: minmax(0, 1fr); text-align: center; }
  .site-footer__brand { display: flex; justify-content: center; }
  .site-footer__brand img { width: 240px; }
  .site-footer__col { margin-bottom: 10px; }
  .site-footer__legal { flex-direction: column-reverse; align-items: flex-start; }
  .site-footer__legal-links { text-align: left; }
}