:root {
  --bvk-bg: #EAF4F8;
  --bvk-surface: #ffffff;
  --bvk-surface-soft: #f5fbfd;
  --bvk-navy: #0B3B5A;
  --bvk-teal: #1298B9;
  --bvk-ink: #102A3A;
  --bvk-line: #D7E4EC;
  --bvk-shadow: 0 28px 64px rgba(11, 59, 90, 0.16);
  --bvk-radius: 28px;
  --bvk-space-24: 24px;
  --bvk-space-32: 32px;
  --bvk-space-88: 88px;
}

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

html {
  scroll-behavior: smooth;
}

body.bvk-body {
  margin: 0;
  font-family: "Inter", "Helvetica Neue", sans-serif;
  font-size: 18px;
  line-height: 1.65;
  color: var(--bvk-ink);
  background:
    radial-gradient(circle at top, rgba(18, 152, 185, 0.18), transparent 34%),
    linear-gradient(180deg, #f6fbfd 0%, var(--bvk-bg) 100%);
}

a {
  color: var(--bvk-navy);
  text-decoration-color: rgba(18, 152, 185, 0.45);
}

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

.bvk-shell {
  width: min(1260px, calc(100vw - 32px));
  margin: 0 auto;
}

.bvk-main {
  padding-top: 88px;
}

.bvk-section {
  padding-top: var(--bvk-space-32);
  padding-bottom: var(--bvk-space-88);
}

.bvk-kicker,
.bvk-brand__eyebrow,
.bvk-footer__eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(16, 42, 58, 0.68);
}

.bvk-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(215, 228, 236, 0.75);
  box-shadow: 0 16px 40px rgba(11, 59, 90, 0.06);
}

.bvk-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 88px;
}

.bvk-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--bvk-navy);
  text-decoration: none;
}

.bvk-brand__mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(18, 152, 185, 0.88), rgba(11, 59, 90, 0.95));
  color: #fff;
  font-family: "Sora", Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 0.08em;
  box-shadow: 0 14px 24px rgba(11, 59, 90, 0.24);
}

.bvk-brand__copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.bvk-brand__title {
  font-family: "Sora", Arial, sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
}

.bvk-nav {
  flex: 1;
}

.bvk-menu,
.bvk-submenu,
.bvk-breadcrumbs__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.bvk-menu {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.bvk-menu__item > a,
.bvk-dropdown summary,
.bvk-mobile__link {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 16px;
  border-radius: 16px;
  font-family: "Sora", Arial, sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  color: rgba(16, 42, 58, 0.84);
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease, color 180ms ease;
}

.bvk-menu__item > a:hover,
.bvk-dropdown summary:hover,
.bvk-mobile__link:hover {
  color: var(--bvk-navy);
  background: rgba(18, 152, 185, 0.12);
  transform: translateY(-1px);
}

.bvk-dropdown {
  position: relative;
}

.bvk-dropdown summary {
  cursor: pointer;
  list-style: none;
}

.bvk-dropdown summary::-webkit-details-marker {
  display: none;
}

.bvk-submenu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 240px;
  padding: 12px;
  border: 1px solid rgba(215, 228, 236, 0.95);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--bvk-shadow);
}

.bvk-submenu li + li {
  margin-top: 6px;
}

.bvk-submenu a {
  display: block;
  padding: 10px 12px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--bvk-ink);
}

.bvk-submenu a:hover {
  background: rgba(18, 152, 185, 0.08);
}

.bvk-dropdown:not([open]) .bvk-submenu {
  display: none;
}

.bvk-header__meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.bvk-header__pill {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(11, 59, 90, 0.08);
  font-size: 0.85rem;
  color: rgba(16, 42, 58, 0.78);
}

.bvk-nav-toggle {
  display: none;
  border: 0;
  border-radius: 16px;
  background: var(--bvk-navy);
  color: #fff;
  min-height: 46px;
  padding: 0 16px;
  font-family: "Sora", Arial, sans-serif;
  font-weight: 700;
}

.bvk-mobile {
  display: none;
  border-top: 1px solid rgba(215, 228, 236, 0.75);
  background: rgba(255, 255, 255, 0.96);
}

.bvk-mobile.is-open {
  display: block;
}

.bvk-mobile__item {
  padding: 10px 0;
}

.bvk-dropdown--mobile .bvk-submenu {
  position: static;
  margin-top: 8px;
  min-width: 0;
  box-shadow: none;
}

.bvk-home-hero {
  min-height: 520px;
  padding: 72px 0 88px;
  background-size: cover;
  background-position: center;
}

.bvk-home-hero__card {
  max-width: 680px;
  padding: 42px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.2);
}

.bvk-home-hero__card h1,
.bvk-article-hero h1,
.bvk-static-hero h1,
.bvk-content-article__header h1 {
  margin: 12px 0 0;
  font-family: "Sora", Arial, sans-serif;
  font-size: clamp(2.6rem, 4.3vw, 3.7rem);
  line-height: 1.04;
  font-weight: 800;
}

.bvk-home-hero__card p,
.bvk-article-hero__copy p,
.bvk-static-hero p,
.bvk-content-article__summary {
  margin-top: 18px;
  max-width: 52ch;
  font-size: 1.05rem;
}

.bvk-chip-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.bvk-chip {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(11, 59, 90, 0.08);
  color: var(--bvk-navy);
  text-decoration: none;
  transition: transform 180ms ease, background-color 180ms ease;
}

.bvk-chip:hover {
  background: rgba(18, 152, 185, 0.14);
  transform: translateY(-1px);
}

.bvk-chip--light {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

.bvk-home-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.75fr) minmax(280px, 0.7fr);
  gap: 32px;
  align-items: start;
}

.bvk-service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.bvk-service-card,
.bvk-listing-card,
.bvk-category-card,
.bvk-mini-card,
.bvk-alert-card,
.bvk-side-panel,
.bvk-panel,
.bvk-article-panel,
.bvk-sidebar,
.bvk-error-card {
  border: 1px solid var(--bvk-line);
  border-radius: var(--bvk-radius);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--bvk-shadow);
}

.bvk-service-card,
.bvk-listing-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 184px;
  padding: var(--bvk-space-24);
  text-decoration: none;
}

.bvk-service-card:hover,
.bvk-listing-card:hover,
.bvk-category-card:hover,
.bvk-mini-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 30px 56px rgba(11, 59, 90, 0.18);
}

.bvk-service-card__badge {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(18, 152, 185, 0.16), rgba(11, 59, 90, 0.18));
  font-family: "Sora", Arial, sans-serif;
  font-weight: 700;
}

.bvk-service-card strong,
.bvk-listing-card strong,
.bvk-category-card h2,
.bvk-mini-card h3,
.bvk-sidebar__link,
.bvk-alert-card strong {
  font-family: "Sora", Arial, sans-serif;
  color: var(--bvk-navy);
}

.bvk-service-card small,
.bvk-listing-card a {
  color: rgba(16, 42, 58, 0.68);
}

.bvk-panel,
.bvk-side-panel,
.bvk-sidebar,
.bvk-article-panel,
.bvk-error-card {
  padding: 26px;
}

.bvk-panel--watermark {
  display: grid;
  place-items: center;
  min-height: 240px;
  background:
    linear-gradient(135deg, rgba(18, 152, 185, 0.12), rgba(11, 59, 90, 0.08)),
    url("/assets/images/design-screen.png") center/cover no-repeat;
  text-align: center;
  font-family: "Sora", Arial, sans-serif;
}

.bvk-alert-card {
  padding: 24px;
  background: linear-gradient(160deg, #d84b3f, #9f1d21);
  color: #fff;
}

.bvk-alert-card span {
  display: block;
  opacity: 0.82;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
}

.bvk-side-panel + .bvk-side-panel,
.bvk-alert-card + .bvk-side-panel {
  margin-top: 18px;
}

.bvk-article-hero,
.bvk-static-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.85fr);
  gap: 28px;
  align-items: stretch;
  margin-bottom: 28px;
}

.bvk-article-hero__copy,
.bvk-static-hero > div:first-child {
  padding: 30px;
  border-radius: var(--bvk-radius);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.98), rgba(239, 248, 252, 0.92));
  border: 1px solid var(--bvk-line);
  box-shadow: var(--bvk-shadow);
}

.bvk-article-hero__media,
.bvk-static-hero__media {
  overflow: hidden;
  border-radius: var(--bvk-radius);
  min-height: 320px;
  background: linear-gradient(160deg, rgba(11, 59, 90, 0.18), rgba(18, 152, 185, 0.24));
  box-shadow: var(--bvk-shadow);
}

.bvk-article-hero__media img,
.bvk-static-hero__media img,
.bvk-content-main-image img,
.bvk-figure img,
.bvk-gallery__item img,
.bvk-category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bvk-content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.75fr);
  gap: 28px;
  align-items: start;
}

.bvk-sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.bvk-sidebar__stack {
  display: grid;
  gap: 10px;
}

.bvk-sidebar__link {
  display: block;
  padding: 12px 14px;
  border-radius: 16px;
  text-decoration: none;
  background: rgba(18, 152, 185, 0.08);
}

.bvk-sidebar__link:hover {
  background: rgba(18, 152, 185, 0.14);
}

.bvk-prose {
  display: grid;
  gap: 18px;
}

.bvk-prose__heading {
  margin: 0;
  font-family: "Sora", Arial, sans-serif;
  color: var(--bvk-navy);
}

.bvk-prose__heading--1,
.bvk-prose__heading--2 {
  font-size: clamp(1.75rem, 3vw, 2.2rem);
}

.bvk-prose__heading--3 {
  font-size: 1.45rem;
}

.bvk-prose__paragraph {
  color: var(--bvk-ink);
}

.bvk-table-shell {
  overflow-x: auto;
  border-radius: 22px;
  border: 1px solid var(--bvk-line);
}

.bvk-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.bvk-table th,
.bvk-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(215, 228, 236, 0.7);
  vertical-align: top;
}

.bvk-table thead th {
  background: rgba(11, 59, 90, 0.92);
  color: #fff;
  text-align: left;
}

.bvk-list {
  margin: 0;
  padding-left: 1.2rem;
}

.bvk-list li + li {
  margin-top: 0.55rem;
}

.bvk-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.bvk-gallery--wide {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.bvk-gallery__item {
  overflow: hidden;
  min-height: 200px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--bvk-line);
  box-shadow: var(--bvk-shadow);
}

.bvk-figure {
  overflow: hidden;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--bvk-line);
  box-shadow: var(--bvk-shadow);
}

.bvk-figure--float {
  float: right;
  max-width: min(360px, 45%);
  margin: 0 0 18px 18px;
}

.bvk-breadcrumbs {
  padding-top: 12px;
}

.bvk-breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  color: rgba(16, 42, 58, 0.66);
  font-size: 0.92rem;
}

.bvk-breadcrumbs__list li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.bvk-breadcrumbs__list li:not(:first-child)::before {
  content: "/";
  opacity: 0.45;
}

.bvk-mini-card,
.bvk-category-card {
  padding: 22px;
}

.bvk-category-grid {
  display: grid;
  grid-template-columns: repeat(var(--bvk-grid-columns, 3), minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
}

.bvk-category-card--horizontal {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.bvk-category-card--minimal img {
  display: none;
}

.bvk-listing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.bvk-content-article {
  padding: 30px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--bvk-line);
  box-shadow: var(--bvk-shadow);
}

.bvk-content-article__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 18px;
  font-size: 0.92rem;
  color: rgba(16, 42, 58, 0.7);
}

.bvk-content-layout {
  margin-top: 28px;
}

.bvk-content-layout--with-side {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 24px;
}

.bvk-content-layout--reverse {
  grid-template-columns: 260px minmax(0, 1fr);
}

.bvk-content-layout__aside--desktop {
  position: sticky;
  top: 110px;
  align-self: start;
}

.bvk-content-main-image {
  overflow: hidden;
  margin: 0 0 22px;
  border-radius: 24px;
}

.bvk-toc {
  margin: 22px 0;
  padding: 18px;
  border-radius: 24px;
  background: rgba(18, 152, 185, 0.08);
  border: 1px solid rgba(18, 152, 185, 0.14);
}

.bvk-toc ul {
  margin: 0;
  padding-left: 1rem;
}

.bvk-toc li + li {
  margin-top: 0.55rem;
}

.bvk-toc--mobile {
  display: none;
}

.bvk-blockquote {
  margin: 0;
  padding: 18px 22px;
  border-left: 4px solid var(--bvk-teal);
  border-radius: 0 22px 22px 0;
  background: rgba(18, 152, 185, 0.08);
}

.bvk-code {
  overflow-x: auto;
  padding: 18px;
  border-radius: 20px;
  background: #091f2d;
  color: #d8edf7;
}

.bvk-rule {
  border: 0;
  border-top: 1px solid rgba(215, 228, 236, 0.95);
  margin: 10px 0;
}

.bvk-footer {
  padding: 48px 0;
  background:
    linear-gradient(180deg, rgba(7, 32, 49, 0.98), rgba(11, 59, 90, 0.98)),
    url("/assets/images/design-screen.png") center/cover no-repeat;
  color: rgba(255, 255, 255, 0.86);
}

.bvk-footer a {
  color: #fff;
  text-decoration: none;
}

.bvk-footer__brand strong {
  display: block;
  margin-top: 10px;
  font-family: "Sora", Arial, sans-serif;
  font-size: 1.15rem;
}

.bvk-footer__links {
  display: grid;
  gap: 10px;
}

.bvk-scrolled .bvk-header {
  box-shadow: 0 20px 50px rgba(11, 59, 90, 0.1);
}

@media (max-width: 1024px) {
  .bvk-home-grid,
  .bvk-content-grid,
  .bvk-article-hero,
  .bvk-static-hero,
  .bvk-content-layout--with-side,
  .bvk-content-layout--reverse {
    grid-template-columns: 1fr;
  }

  .bvk-content-layout__aside--desktop {
    display: none;
  }

  .bvk-toc--mobile {
    display: block;
  }

  .bvk-category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .bvk-nav--desktop,
  .bvk-header__pill {
    display: none;
  }

  .bvk-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .bvk-home-hero {
    min-height: 420px;
    padding-top: 36px;
  }

  .bvk-home-hero__card,
  .bvk-panel,
  .bvk-side-panel,
  .bvk-sidebar,
  .bvk-article-panel,
  .bvk-error-card,
  .bvk-content-article {
    padding: 22px;
  }
}

@media (max-width: 640px) {
  body.bvk-body {
    font-size: 16px;
  }

  .bvk-shell {
    width: min(100vw - 20px, 1260px);
  }

  .bvk-main {
    padding-top: 78px;
  }

  .bvk-header__inner {
    min-height: 78px;
  }

  .bvk-brand__mark {
    width: 42px;
    height: 42px;
  }

  .bvk-home-hero__card h1,
  .bvk-article-hero h1,
  .bvk-static-hero h1,
  .bvk-content-article__header h1 {
    font-size: 2.4rem;
  }

  .bvk-service-grid,
  .bvk-listing-grid,
  .bvk-category-grid {
    grid-template-columns: 1fr;
  }

  .bvk-category-card--horizontal {
    grid-template-columns: 1fr;
  }

  .bvk-figure--float {
    float: none;
    max-width: none;
    margin-left: 0;
  }
}

@media print {
  .bvk-header,
  .bvk-footer,
  .bvk-nav-toggle,
  .bvk-mobile,
  .bvk-sidebar,
  .bvk-chip-cloud {
    display: none !important;
  }

  body.bvk-body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .bvk-main {
    padding-top: 0;
  }

  .bvk-panel,
  .bvk-article-panel,
  .bvk-content-article,
  .bvk-service-card,
  .bvk-listing-card,
  .bvk-category-card {
    box-shadow: none;
    border-color: #bbb;
  }
}