:root {
  --ink: #07110E;
  --deep: #0B2B24;
  --mid: #125044;
  --paper: #F2F5F1;
  --cyan: #2EF2C2;
  --amber: #F5A524;
  --wine: #4A1F2B;
  --indigo: #1B1F3B;
  --mist: #8FA39C;
  --pale: #9BFFE4;
  --line: rgba(46, 242, 194, .22);
  --line-strong: rgba(46, 242, 194, .42);
  --line-soft: rgba(143, 163, 156, .2);
  --panel-shadow: 0 12px 32px rgba(0, 0, 0, .28);
  --panel-shadow-raised: 0 18px 48px rgba(0, 0, 0, .38);
  --font-display: "Arial Narrow", "Roboto Condensed", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", "Courier New", monospace;
  --shell: 1320px;
  --gutter: clamp(16px, 4vw, 48px);
  --radius: 2px;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(ellipse at 12% -10%, rgba(18, 80, 68, .55), transparent 42%),
    radial-gradient(ellipse at 92% 10%, rgba(27, 31, 59, .65), transparent 38%),
    linear-gradient(rgba(46, 242, 194, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 242, 194, .035) 1px, transparent 1px);
  background-size: auto, auto, 40px 40px, 40px 40px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: .18em;
}

p,
h1,
h2,
h3,
h4,
ul,
ol,
figure {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.05;
  color: var(--paper);
  letter-spacing: -.015em;
}

h1 {
  font-size: clamp(2.4rem, 6vw, 5.2rem);
  line-height: .98;
  letter-spacing: -.02em;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
}

h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  line-height: 1.18;
}

p {
  color: inherit;
}

::selection {
  background: var(--cyan);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(7, 17, 14, .92);
}

.bvt-skip {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  transform: translateY(-170%);
  padding: .72rem 1rem;
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--cyan);
  color: var(--ink);
  font: 700 .82rem/1 var(--font-mono);
  letter-spacing: .04em;
  text-decoration: none;
  transition: transform .18s ease;
}

.bvt-skip:focus {
  transform: translateY(0);
}

.bvt-shell {
  width: min(calc(100% - (var(--gutter) * 2)), var(--shell));
  margin-inline: auto;
}

.bvt-main {
  display: block;
  min-height: 50vh;
}

#main-content {
  scroll-margin-top: 100px;
}

.bvt-section {
  position: relative;
  padding-block: clamp(36px, 6vw, 76px);
}

.bvt-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 2vw, 24px);
}

.bvt-col-3,
.bvt-col-4,
.bvt-col-5,
.bvt-col-6,
.bvt-col-7,
.bvt-col-8,
.bvt-col-9,
.bvt-col-12 {
  min-width: 0;
}

.bvt-col-3 { grid-column: span 3; }
.bvt-col-4 { grid-column: span 4; }
.bvt-col-5 { grid-column: span 5; }
.bvt-col-6 { grid-column: span 6; }
.bvt-col-7 { grid-column: span 7; }
.bvt-col-8 { grid-column: span 8; }
.bvt-col-9 { grid-column: span 9; }
.bvt-col-12 { grid-column: span 12; }

.bvt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 42px;
  padding: .65rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 43, 36, .82);
  color: var(--paper);
  font: 700 .78rem/1 var(--font-mono);
  letter-spacing: .04em;
  text-decoration: none;
  transition: transform .2s ease, background-color .2s ease, border-color .2s ease, color .2s ease;
}

.bvt-btn:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  background: var(--mid);
  color: var(--paper);
}

.bvt-btn:active {
  transform: translateY(0);
}

.bvt-btn--primary {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--ink);
  box-shadow: 0 8px 20px rgba(46, 242, 194, .16);
}

.bvt-btn--primary:hover {
  border-color: var(--pale);
  background: var(--pale);
  color: var(--ink);
}

.bvt-btn--ghost {
  background: rgba(11, 43, 36, .55);
  color: var(--paper);
}

.bvt-btn--amber {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--ink);
}

.bvt-header {
  position: sticky;
  top: 0;
  z-index: 100;
  color: var(--paper);
  background: rgba(7, 17, 14, .97);
  border-bottom: 1px solid var(--line);
}

.bvt-header__rail {
  background:
    linear-gradient(90deg, rgba(11, 43, 36, .98), rgba(7, 17, 14, .97) 58%, rgba(27, 31, 59, .88));
}

.bvt-header__bar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  min-height: 80px;
}

.bvt-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--paper);
  text-decoration: none;
}

.bvt-brand__mark {
  position: relative;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--mid), var(--deep) 64%, var(--ink));
  box-shadow: inset 0 0 0 5px rgba(7, 17, 14, .9), 0 8px 18px rgba(0, 0, 0, .24);
}

.bvt-brand__mark::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--cyan);
  box-shadow: 0 6px 0 rgba(46, 242, 194, .34), 0 12px 0 rgba(46, 242, 194, .16);
}

.bvt-brand__mark::after {
  content: "";
  position: absolute;
  right: 6px;
  bottom: 6px;
  width: 8px;
  height: 8px;
  border-right: 1px solid var(--amber);
  border-bottom: 1px solid var(--amber);
}

.bvt-brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.bvt-brand__line {
  color: var(--paper);
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: .02em;
  transition: color .2s ease;
}

.bvt-brand__sub {
  margin-top: 4px;
  color: var(--mist);
  font: .66rem/1.25 var(--font-mono);
  letter-spacing: .04em;
  white-space: nowrap;
}

.bvt-nav-toggle {
  position: relative;
  z-index: 170;
  display: none;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  min-height: 40px;
  padding: .55rem .72rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(11, 43, 36, .82);
  color: var(--paper);
  font: 700 .72rem/1 var(--font-mono);
  letter-spacing: .05em;
}

.bvt-nav-toggle__lines {
  display: grid;
  gap: 4px;
  width: 20px;
}

.bvt-nav-toggle__lines span {
  display: block;
  height: 2px;
  background: var(--cyan);
  transition: transform .2s ease, opacity .2s ease;
}

.bvt-nav-toggle[aria-expanded="true"] .bvt-nav-toggle__lines span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.bvt-nav-toggle[aria-expanded="true"] .bvt-nav-toggle__lines span:nth-child(2) {
  opacity: 0;
}

.bvt-nav-toggle[aria-expanded="true"] .bvt-nav-toggle__lines span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.bvt-nav {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: clamp(12px, 2vw, 28px);
  min-width: 0;
}

.bvt-nav__head {
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  color: var(--pale);
  font: 700 .7rem/1.2 var(--font-mono);
  letter-spacing: .06em;
}

.bvt-nav__head-code {
  color: var(--amber);
}

.bvt-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.bvt-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 .7rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--paper);
  font-size: .86rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.bvt-nav__link:hover {
  border-color: rgba(46, 242, 194, .28);
  background: rgba(18, 80, 68, .7);
  color: var(--paper);
}

.bvt-nav__link[aria-current="page"] {
  border-color: rgba(46, 242, 194, .32);
  background: rgba(46, 242, 194, .08);
  color: var(--cyan);
}

.bvt-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: .65rem;
  bottom: 4px;
  left: .65rem;
  height: 2px;
  background: var(--cyan);
}

.bvt-nav__utility {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: clamp(8px, 2vw, 20px);
  padding-left: clamp(12px, 2vw, 22px);
  border-left: 1px solid var(--line-soft);
}

.bvt-nav__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  max-width: 116px;
  color: var(--mist);
  font: .66rem/1.35 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-nav__pulse {
  flex: 0 0 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px rgba(245, 165, 36, .12);
}

.bvt-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  overflow: hidden;
  pointer-events: none;
}

.bvt-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--pale) 60%, var(--amber));
  will-change: transform;
}

.bvt-nav-backdrop {
  display: none;
}

.bvt-breadcrumbs {
  padding-block: 14px 0;
  color: var(--mist);
  font: .7rem/1.4 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.bvt-breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.bvt-breadcrumbs__item + .bvt-breadcrumbs__item::before {
  content: "/";
  color: rgba(143, 163, 156, .56);
}

.bvt-breadcrumbs__link {
  color: var(--mist);
  text-decoration: none;
}

.bvt-breadcrumbs__link:hover {
  color: var(--cyan);
}

.bvt-breadcrumbs__current {
  color: var(--pale);
}

.bvt-panel {
  position: relative;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(11, 43, 36, .96), rgba(7, 17, 14, .96));
  box-shadow: var(--panel-shadow);
  color: var(--paper);
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.bvt-panel--raised {
  box-shadow: var(--panel-shadow-raised);
}

.bvt-panel--paper {
  border-color: rgba(18, 80, 68, .18);
  background: var(--paper);
  box-shadow: 0 16px 38px rgba(7, 17, 14, .22);
  color: var(--ink);
}

.bvt-panel--indigo {
  border-color: rgba(155, 255, 228, .18);
  background: var(--indigo);
}

.bvt-panel--paper h1,
.bvt-panel--paper h2,
.bvt-panel--paper h3,
.bvt-panel--paper h4,
.bvt-panel--paper .bvt-panel__title {
  color: var(--ink);
}

.bvt-panel--paper a {
  color: var(--mid);
}

.bvt-panel__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}

.bvt-panel--paper .bvt-panel__head {
  border-color: rgba(18, 80, 68, .18);
}

.bvt-panel__title {
  margin: 0;
  font-size: clamp(1.1rem, 1.7vw, 1.35rem);
  line-height: 1.15;
}

.bvt-panel__body {
  max-width: 72ch;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.7;
}

.bvt-panel--paper .bvt-panel__body {
  color: rgba(7, 17, 14, .74);
}

.bvt-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  font: 700 .7rem/1.2 var(--font-mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}

.bvt-kicker::before {
  content: "";
  width: 18px;
  height: 1px;
  background: var(--cyan);
}

.bvt-panel--paper .bvt-kicker {
  color: var(--mid);
}

.bvt-panel--paper .bvt-kicker::before {
  background: var(--mid);
}

.bvt-tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.bvt-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border: 1px solid rgba(46, 242, 194, .28);
  border-radius: var(--radius);
  background: rgba(46, 242, 194, .07);
  color: var(--pale);
  font: .68rem/1 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-tag--amber {
  border-color: rgba(245, 165, 36, .42);
  background: rgba(245, 165, 36, .08);
  color: var(--amber);
}

.bvt-tag--wine {
  border-color: rgba(74, 31, 43, .9);
  background: var(--wine);
  color: #F2D8DF;
}

.bvt-data-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line-soft);
  box-shadow: var(--panel-shadow);
}

.bvt-stat {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  min-height: 92px;
  padding: 18px;
  background: linear-gradient(160deg, var(--deep), var(--ink));
}

.bvt-stat__value {
  color: var(--cyan);
  font: 800 clamp(1.4rem, 2.6vw, 2.2rem)/1 var(--font-mono);
  letter-spacing: .02em;
}

.bvt-stat__label {
  color: var(--mist);
  font: .68rem/1.3 var(--font-mono);
  letter-spacing: .05em;
}

.bvt-stat--amber .bvt-stat__value {
  color: var(--amber);
}

.bvt-index-list {
  display: grid;
  border-top: 1px solid var(--line-soft);
}

.bvt-index-item {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}

.bvt-index-item__meta {
  color: var(--amber);
  font: .7rem/1.4 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-index-item__title {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: .94rem;
  font-weight: 600;
  line-height: 1.4;
}

.bvt-panel--paper .bvt-index-item__title {
  color: var(--ink);
}

.bvt-index-item__link {
  color: var(--pale);
  font: .7rem/1.3 var(--font-mono);
  letter-spacing: .03em;
  text-decoration: none;
}

.bvt-index-item__link:hover {
  color: var(--cyan);
}

.bvt-timeline {
  position: relative;
  display: grid;
  gap: 16px;
  padding-left: 20px;
}

.bvt-timeline::before {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 5px;
  width: 1px;
  background: linear-gradient(var(--amber), rgba(46, 242, 194, .2));
}

.bvt-timeline__item {
  position: relative;
  padding: 0 0 16px 18px;
  border-bottom: 1px solid var(--line-soft);
}

.bvt-timeline__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.bvt-timeline__marker {
  position: absolute;
  top: 5px;
  left: -19px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--amber);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px rgba(245, 165, 36, .12);
}

.bvt-timeline__time {
  color: var(--amber);
  font: .68rem/1.4 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-timeline__body {
  margin-top: 4px;
  color: var(--mist);
  font-size: .9rem;
  line-height: 1.55;
}

.bvt-timeline__body strong {
  color: var(--paper);
}

.bvt-media {
  position: relative;
  overflow: hidden;
  margin: 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(46, 242, 194, .08), transparent 45%),
    repeating-linear-gradient(0deg, transparent 0 22px, rgba(46, 242, 194, .06) 22px 23px),
    var(--deep);
  box-shadow: var(--panel-shadow);
}

.bvt-media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(135deg, rgba(46, 242, 194, .12), transparent 40%, rgba(245, 165, 36, .1));
  mix-blend-mode: screen;
}

.bvt-media--wide {
  aspect-ratio: 21 / 9;
}

.bvt-media--portrait {
  aspect-ratio: 4 / 5;
}

.bvt-media--square {
  aspect-ratio: 1;
}

.bvt-media__img,
.bvt-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.9) contrast(1.05);
  transition: transform .35s ease;
}

.bvt-media__caption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  padding: 10px 12px;
  background: linear-gradient(transparent, rgba(7, 17, 14, .88));
  color: var(--paper);
  font: .7rem/1.4 var(--font-mono);
  letter-spacing: .03em;
}

.bvt-prose {
  max-width: 72ch;
  color: var(--paper);
  font-size: 1rem;
  line-height: 1.75;
}

.bvt-prose p + p,
.bvt-prose p + ul,
.bvt-prose p + ol,
.bvt-prose ul + p,
.bvt-prose ol + p {
  margin-top: 1em;
}

.bvt-prose h2,
.bvt-prose h3 {
  margin-top: 1.4em;
  margin-bottom: .5em;
}

.bvt-prose ul,
.bvt-prose ol {
  padding-left: 1.2em;
}

.bvt-prose ul {
  list-style: square;
}

.bvt-prose ol {
  list-style: decimal;
}

.bvt-prose code {
  padding: .08em .32em;
  border: 1px solid var(--line-soft);
  background: rgba(11, 43, 36, .72);
  color: var(--pale);
  font: .86em/1.5 var(--font-mono);
}

.bvt-panel--paper .bvt-prose {
  color: var(--ink);
}

.bvt-panel--paper .bvt-prose code {
  background: rgba(18, 80, 68, .08);
  color: var(--mid);
}

.bvt-copy {
  appearance: none;
  min-height: 28px;
  padding: 6px 8px;
  border: 1px solid rgba(155, 255, 228, .32);
  border-radius: var(--radius);
  background: rgba(155, 255, 228, .08);
  color: var(--pale);
  font: 700 .64rem/1 var(--font-mono);
  letter-spacing: .04em;
  white-space: nowrap;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.bvt-copy:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.bvt-copy[data-copied="true"] {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--ink);
}

.bvt-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(44px, 8vw, 96px);
  border-top: 1px solid rgba(46, 242, 194, .18);
  background: var(--ink);
  color: var(--paper);
}

.bvt-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(ellipse at 12% 0%, rgba(18, 80, 68, .45), transparent 42%),
    linear-gradient(rgba(46, 242, 194, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(46, 242, 194, .035) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  opacity: .62;
}

.bvt-footer .bvt-shell {
  position: relative;
  z-index: 1;
}

.bvt-footer__stack {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(210px, .78fr) minmax(0, 1fr);
  gap: clamp(16px, 2.5vw, 30px);
  align-items: start;
  padding-top: clamp(54px, 8vw, 92px);
}

.bvt-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 240px;
  margin-top: -42px;
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid rgba(46, 242, 194, .24);
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--deep), rgba(18, 80, 68, .75));
  box-shadow: 0 24px 50px rgba(0, 0, 0, .32);
}

.bvt-footer__title {
  max-width: 12ch;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: .98;
}

.bvt-footer__tagline {
  max-width: 28ch;
  color: var(--pale);
  font-size: .92rem;
  line-height: 1.6;
}

.bvt-footer__signals {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

.bvt-footer__signal {
  padding: 7px 9px;
  border: 1px solid rgba(46, 242, 194, .24);
  border-radius: var(--radius);
  background: rgba(46, 242, 194, .06);
  color: var(--pale);
  font: .66rem/1 var(--font-mono);
  letter-spacing: .05em;
}

.bvt-footer__nav {
  margin-top: 14px;
  padding: 24px;
  border: 1px solid rgba(143, 163, 156, .18);
  border-radius: var(--radius);
  background: rgba(11, 43, 36, .55);
}

.bvt-footer__groups {
  display: grid;
  gap: 22px;
}

.bvt-footer__group-title {
  margin: 0 0 12px;
  color: var(--cyan);
  font: 700 .7rem/1.2 var(--font-mono);
  letter-spacing: .08em;
}

.bvt-footer__links {
  display: grid;
  gap: 9px;
}

.bvt-footer__link {
  width: fit-content;
  max-width: 100%;
  border-bottom: 1px solid transparent;
  color: var(--paper);
  font-size: .92rem;
  line-height: 1.4;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease;
}

.bvt-footer__link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.bvt-footer__contact {
  margin-top: 34px;
  padding: 24px;
  border: 1px solid rgba(155, 255, 228, .18);
  border-radius: var(--radius);
  background: var(--indigo);
  box-shadow: 0 18px 42px rgba(0, 0, 0, .24);
}

.bvt-footer__contact-title {
  margin: 0 0 10px;
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  line-height: 1.15;
}

.bvt-footer__contact-list {
  display: grid;
}

.bvt-footer__contact-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: start;
  padding-block: 8px;
  border-bottom: 1px solid rgba(155, 255, 228, .12);
}

.bvt-footer__contact-row:last-child {
  border-bottom: 0;
}

.bvt-footer__label {
  padding-top: 3px;
  color: var(--mist);
  font: .68rem/1.3 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-footer__value {
  min-width: 0;
  color: var(--paper);
  font: .8rem/1.5 var(--font-mono);
  letter-spacing: .02em;
  word-break: break-word;
}

.bvt-footer__hours {
  margin-top: 14px;
  color: var(--mist);
  font-size: .82rem;
  line-height: 1.55;
}

.bvt-footer__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  margin-top: clamp(32px, 5vw, 56px);
  padding: 18px 0 28px;
  border-top: 1px solid rgba(143, 163, 156, .2);
  color: var(--mist);
  font: .72rem/1.5 var(--font-mono);
  letter-spacing: .04em;
}

.bvt-footer__copyright,
.bvt-footer__icp {
  color: var(--mist);
}

.bvt-footer__legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
}

.bvt-footer__legal-link {
  border-bottom: 1px solid transparent;
  color: var(--pale);
  text-decoration: none;
}

.bvt-footer__legal-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

@media (hover: hover) {
  .bvt-brand:hover .bvt-brand__line {
    color: var(--cyan);
  }

  .bvt-panel:hover {
    transform: translateY(-3px);
    border-color: var(--line-strong);
    box-shadow: var(--panel-shadow-raised);
  }

  .bvt-media:hover .bvt-media__img,
  .bvt-media:hover img {
    transform: scale(1.02);
  }
}

@media (max-width: 1080px) {
  .bvt-nav__status {
    display: none;
  }

  .bvt-nav__utility {
    margin-left: 0;
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 960px) {
  .bvt-header__bar {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    min-height: 68px;
  }

  .bvt-brand__sub {
    white-space: normal;
  }

  .bvt-nav-toggle {
    display: inline-flex;
  }

  .bvt-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 160;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-self: auto;
    width: min(88vw, 380px);
    gap: 24px;
    padding: 76px 20px 28px;
    overflow-y: auto;
    border-left: 1px solid var(--line);
    background: linear-gradient(180deg, var(--deep), var(--ink));
    box-shadow: -20px 0 60px rgba(0, 0, 0, .38);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform .24s ease, visibility .24s ease;
  }

  .bvt-nav[data-open] {
    transform: translateX(0);
    visibility: visible;
  }

  .bvt-nav__head {
    display: flex;
  }

  .bvt-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .bvt-nav__link {
    min-height: 48px;
    padding: 0 12px;
    border-color: rgba(143, 163, 156, .16);
    background: rgba(11, 43, 36, .62);
    font-size: 1rem;
  }

  .bvt-nav__link[aria-current="page"]::after {
    right: auto;
    bottom: 8px;
    left: 12px;
    width: 22px;
  }

  .bvt-nav__utility {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: auto;
    padding-top: 18px;
    border-top: 1px solid var(--line);
  }

  .bvt-nav__status {
    display: flex;
    max-width: none;
  }

  .bvt-nav__utility .bvt-btn {
    width: 100%;
  }

  .bvt-nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 150;
    display: block;
    padding: 0;
    border: 0;
    background: rgba(7, 17, 14, .68);
    opacity: 0;
    visibility: hidden;
    cursor: pointer;
    transition: opacity .24s ease, visibility .24s ease;
  }

  .bvt-header[data-open] .bvt-nav-backdrop {
    opacity: 1;
    visibility: visible;
  }

  html.nav-open,
  html.nav-open body {
    overflow: hidden;
  }

  .bvt-grid {
    gap: 14px;
  }

  .bvt-col-3,
  .bvt-col-4,
  .bvt-col-5,
  .bvt-col-6,
  .bvt-col-7,
  .bvt-col-8,
  .bvt-col-9 {
    grid-column: span 12;
  }
}

@media (max-width: 900px) {
  .bvt-footer__stack {
    grid-template-columns: 1fr 1fr;
    padding-top: clamp(48px, 8vw, 72px);
  }

  .bvt-footer__brand {
    grid-column: 1 / -1;
    min-height: 0;
    margin-top: -36px;
  }

  .bvt-footer__nav,
  .bvt-footer__contact {
    margin-top: 0;
  }

  .bvt-footer__contact {
    align-self: stretch;
  }
}

@media (max-width: 700px) {
  .bvt-footer__stack {
    grid-template-columns: 1fr;
  }

  .bvt-footer__brand {
    margin-top: -28px;
  }

  .bvt-footer__meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .bvt-data-band {
    grid-template-columns: 1fr;
  }

  .bvt-stat {
    min-height: 76px;
  }

  .bvt-index-item {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .bvt-index-item__link {
    grid-column: 2;
  }
}

@media (max-width: 480px) {
  .bvt-brand__mark {
    flex-basis: 36px;
    width: 36px;
    height: 36px;
  }

  .bvt-brand__line {
    font-size: .95rem;
  }

  .bvt-brand__sub {
    font-size: .62rem;
  }

  .bvt-nav-toggle__label {
    display: none;
  }

  .bvt-footer__contact-row {
    grid-template-columns: 46px minmax(0, 1fr) auto;
  }

  .bvt-footer__nav,
  .bvt-footer__contact {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  .bvt-panel:hover,
  .bvt-btn:hover {
    transform: none;
  }
}