/* =========================================================
   B体育最新版 — 共享样式 /assets/site.css
   框架式导航 · 夜间赛场数据面板
   ========================================================= */

/* ---------- 1. Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--status-h) + 24px);
}

body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, figcaption,
blockquote, dl, dd, hr { margin: 0; padding: 0; }

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { background: none; border: 0; color: inherit; font: inherit; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
hr { border: 0; }

/* ---------- 2. Tokens ---------- */
:root {
  --bg: #070B14;
  --panel: #0E1526;
  --panel-2: #111B2E;
  --line: #1B2740;

  --cyan: #22E0D6;
  --cyan-deep: #0FA98A;
  --orange: #FF7A2F;
  --red: #FF4A3D;
  --amber: #F2B233;

  --ink: #F3F7FF;
  --ink-dim: #9DAAC6;
  --mint: #6FF3E4;
  --muted: #64708C;

  --grad-cyan: linear-gradient(90deg, #0FA98A, #22E0D6);
  --grad-amber: linear-gradient(90deg, #F2B233, #FF7A2F);
  --grad-red: linear-gradient(90deg, #FF4A3D, #FF7A2F);

  --font-display: 'Archivo Narrow', 'Oswald', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'JetBrains Mono', 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', 'Menlo', 'Consolas', monospace;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;

  --status-h: 38px;
  --bar-h: 58px;
  --frame-w: 264px;
  --shell-pad: clamp(18px, 4.2vw, 56px);

  --r-lg: 22px;
  --r-md: 14px;
  --r-sm: 9px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

@media (min-width: 1100px) {
  :root { --status-h: 40px; }
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--bg);
  background-image:
    radial-gradient(880px 580px at 78% -8%, rgba(34, 224, 214, .10), transparent 62%),
    radial-gradient(660px 520px at 6% 104%, rgba(255, 122, 47, .08), transparent 60%),
    radial-gradient(520px 380px at 42% 46%, rgba(15, 169, 138, .05), transparent 70%);
  background-attachment: fixed;
  color: var(--ink);
  font: 400 16px/1.75 var(--font-body);
  padding-top: calc(var(--status-h) + var(--bar-h));
}

@media (min-width: 1100px) {
  body {
    padding-top: var(--status-h);
    padding-left: var(--frame-w);
  }
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; }
strong { font-weight: 600; }

::selection { background: rgba(34, 224, 214, .28); color: var(--ink); }

:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: -70px;
  left: 14px;
  z-index: 200;
  padding: 11px 18px;
  border-radius: 0 0 12px 12px;
  background: var(--cyan);
  color: #04140F;
  font: 600 13px/1 var(--font-body);
  letter-spacing: .04em;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; }

/* ---------- 4. Status bar ---------- */
.status-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 80;
  height: var(--status-h);
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 var(--shell-pad) 0 16px;
  background: linear-gradient(90deg, #0B1220, #0E1526 46%, #101A2E);
  border-bottom: 1px solid var(--line);
  font: 500 11px/1 var(--font-num);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.status-bar__mark {
  color: var(--cyan);
  letter-spacing: .2em;
  flex: 0 0 auto;
}

.status-bar__list {
  display: flex;
  align-items: center;
  gap: 22px;
  flex: 1 1 auto;
  min-width: 0;
}

.status-bar__item {
  display: none;
  position: relative;
  padding-left: 14px;
  white-space: nowrap;
}
.status-bar__item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  margin-top: -2.5px;
  border-radius: 50%;
  background: var(--muted);
}
.status-bar__item:first-child { display: block; }
.status-bar__item:first-child::before {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 224, 214, .16);
}

@media (min-width: 640px) { .status-bar__item:nth-child(2) { display: block; } }
@media (min-width: 1100px) { .status-bar__item:nth-child(3) { display: block; } }

.status-bar__live {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  color: var(--orange);
  letter-spacing: .1em;
}

.status-bar__pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--orange);
  animation: bs-pulse 2s var(--ease) infinite;
}

@keyframes bs-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(255, 122, 47, .45); }
  50% { opacity: .55; box-shadow: 0 0 0 6px rgba(255, 122, 47, 0); }
}

/* ---------- 5. Frame navigation ---------- */
.frame {
  position: fixed;
  top: var(--status-h);
  left: 0;
  right: 0;
  z-index: 75;
  height: var(--bar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 var(--shell-pad) 0 16px;
  background: rgba(14, 21, 38, .94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 1100px) {
  .frame {
    right: auto;
    bottom: 0;
    height: auto;
    width: var(--frame-w);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 26px 22px 22px;
    border-bottom: 0;
    border-right: 1px solid var(--line);
    overflow-y: auto;
    background:
      linear-gradient(180deg, rgba(34, 224, 214, .06), transparent 26%),
      var(--panel);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }
}

.frame__brand { min-width: 0; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand__mark {
  flex: 0 0 auto;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(34, 224, 214, .32);
  background: linear-gradient(135deg, rgba(34, 224, 214, .16), rgba(255, 122, 47, .10));
  color: var(--ink);
  font: 600 14px/1 var(--font-display);
  letter-spacing: .2em;
  text-transform: uppercase;
  white-space: nowrap;
}

.brand__name {
  font: 600 12px/1.2 var(--font-display);
  letter-spacing: .08em;
  color: var(--ink-dim);
  white-space: nowrap;
}

.brand__ver {
  flex: 0 0 auto;
  padding: 4px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font: 500 10px/1 var(--font-num);
  letter-spacing: .12em;
}

@media (max-width: 430px) { .brand__name { display: none; } }
@media (max-width: 359px) { .brand__ver { display: none; } }

@media (min-width: 1100px) {
  .frame__brand {
    padding-bottom: 20px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--line);
  }
  .brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .brand__mark {
    width: 100%;
    text-align: center;
    padding: 12px 0;
    font-size: 16px;
    letter-spacing: .3em;
  }
  .brand__name { font-size: 12px; }
}

.frame__legend {
  display: none;
  font: 500 10px/1 var(--font-num);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}

@media (min-width: 1100px) { .frame__legend { display: block; } }

/* nav list */
.nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: var(--r-sm);
  color: var(--ink-dim);
  font: 500 14px/1.35 var(--font-body);
  transition: background .22s var(--ease), color .22s var(--ease), transform .22s var(--ease);
}

.nav-link__idx {
  flex: 0 0 auto;
  min-width: 20px;
  color: var(--muted);
  font: 500 11px/1 var(--font-num);
  letter-spacing: .08em;
}

.nav-link__label { flex: 1 1 auto; min-width: 0; }

.nav-link__dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line);
  transition: background .22s var(--ease), box-shadow .22s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  background: rgba(34, 224, 214, .08);
  color: var(--ink);
  transform: translateX(2px);
}
.nav-link:hover .nav-link__dot,
.nav-link:focus-visible .nav-link__dot { background: var(--cyan); }

.nav-link[aria-current="page"] {
  color: var(--ink);
  background: linear-gradient(90deg, rgba(34, 224, 214, .17), rgba(34, 224, 214, .02));
}
.nav-link[aria-current="page"]::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  border-radius: 2px;
  background: var(--grad-cyan);
}
.nav-link[aria-current="page"] .nav-link__idx { color: var(--cyan); }
.nav-link[aria-current="page"] .nav-link__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 224, 214, .15);
}

/* cta group */
.frame__cta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: auto;
  padding-top: 22px;
}

/* mobile drawer */
@media (max-width: 1099px) {
  .frame__nav {
    position: fixed;
    top: calc(var(--status-h) + var(--bar-h));
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 74;
    padding: 18px var(--shell-pad) 40px;
    background: linear-gradient(180deg, #0E1526, rgba(7, 11, 20, .99));
    border-top: 1px solid var(--line);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
  }
  .frame__nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .frame__nav .nav-list { gap: 4px; }
  .frame__nav .nav-link {
    padding: 15px 12px;
    font-size: 15px;
    border-bottom: 1px solid rgba(27, 39, 64, .65);
    border-radius: 0;
  }
  .frame__nav .nav-link:hover { transform: none; }
  .frame__cta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: 22px;
    padding-top: 0;
  }
}

@media (min-width: 1100px) {
  .frame__nav {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-height: 0;
  }
}

body.nav-open { overflow: hidden; }

/* toggle */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 11, 20, .6);
  color: var(--ink);
  font: 500 12px/1 var(--font-body);
  letter-spacing: .06em;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover { border-color: var(--mint); color: var(--mint); }

.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 10px;
  flex: 0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--cyan);
  transition: transform .24s var(--ease);
}
.nav-toggle__bars::before { top: 1px; }
.nav-toggle__bars::after { bottom: 1px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { transform: translateY(3.75px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after { transform: translateY(-3.75px) rotate(-45deg); }

@media (min-width: 1100px) { .nav-toggle { display: none; } }

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: 600 13px/1 var(--font-display);
  letter-spacing: .1em;
  text-align: center;
  cursor: pointer;
  transition: transform .18s var(--ease), background .2s var(--ease),
              color .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.btn--primary {
  background: var(--grad-cyan);
  color: #04140F;
  box-shadow: 0 10px 26px -16px rgba(34, 224, 214, .9);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -16px rgba(34, 224, 214, .95);
}

.btn--ghost {
  background: rgba(34, 224, 214, .05);
  border-color: var(--line);
  color: var(--ink);
}
.btn--ghost:hover {
  transform: translateY(-2px);
  border-color: var(--mint);
  color: var(--mint);
}

.btn--amber {
  background: rgba(242, 178, 51, .12);
  border-color: rgba(242, 178, 51, .5);
  color: var(--amber);
}
.btn--amber:hover {
  transform: translateY(-2px);
  background: rgba(242, 178, 51, .2);
}

/* ---------- 7. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(96px, 14vw, 160px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 21, 38, .62), rgba(7, 11, 20, 1));
}
.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  width: min(340px, 44%);
  height: 1px;
  background: var(--grad-cyan);
}

.footer__inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: clamp(48px, 7vw, 86px) var(--shell-pad) 30px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

@media (min-width: 560px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
}

@media (min-width: 1200px) {
  .footer__grid {
    grid-template-columns: 1.5fr .85fr .85fr .85fr 1.35fr;
    gap: 30px;
  }
  .footer__brand { grid-column: auto; }
}

.footer__logo {
  display: inline-block;
  padding: 9px 12px;
  border-radius: var(--r-sm);
  border: 1px solid rgba(34, 224, 214, .28);
  background: linear-gradient(135deg, rgba(34, 224, 214, .14), rgba(255, 122, 47, .08));
  font: 600 14px/1 var(--font-display);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink);
}

.footer__claim {
  margin-top: 16px;
  font: 500 14px/1.7 var(--font-body);
  color: var(--ink);
}

.footer__note {
  margin-top: 10px;
  max-width: 52ch;
  font: 400 12px/1.9 var(--font-body);
  color: var(--muted);
}

.footer__col-title {
  margin-bottom: 16px;
  font: 600 11px/1 var(--font-num);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.footer__link {
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  font: 400 14px/1.5 var(--font-body);
  color: var(--ink-dim);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: rgba(34, 224, 214, .5);
}

.footer__contact {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background:
    linear-gradient(160deg, rgba(242, 178, 51, .07), transparent 68%),
    var(--panel);
}

.footer__meta {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__meta-row {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.footer__meta-k {
  flex: 0 0 auto;
  min-width: 34px;
  font: 500 11px/1.6 var(--font-num);
  letter-spacing: .14em;
  color: var(--muted);
}

.footer__meta-v {
  flex: 1 1 auto;
  min-width: 0;
  font: 400 13px/1.7 var(--font-body);
  color: var(--ink);
  word-break: break-word;
}

.footer__base {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px dashed var(--line);
  font: 500 12px/1.7 var(--font-num);
  letter-spacing: .06em;
  color: var(--muted);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer__legal .footer__link { font: 500 12px/1.6 var(--font-num); }

.footer__copy { margin-left: auto; color: var(--muted); }

@media (max-width: 719px) {
  .footer__copy { margin-left: 0; width: 100%; }
}

/* ---------- 8. Layout helpers ---------- */
.site-main { display: block; padding-top: clamp(18px, 3vw, 34px); }

.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: var(--shell-pad);
}

@media (min-width: 1100px) {
  .container { padding-inline: 40px; }
}

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

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 18px; }
}

@media (max-width: 560px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
}

.section { padding-block: clamp(64px, 10vw, 120px); }
.section--tight { padding-block: clamp(40px, 6vw, 72px); }
.section--wide { padding-block: clamp(88px, 13vw, 160px); }

.divider {
  height: 1px;
  border: 0;
  margin: clamp(30px, 5vw, 56px) 0;
  background: linear-gradient(90deg, var(--line), rgba(27, 39, 64, 0));
}

/* ---------- 9. Typography helpers ---------- */
.eyebrow {
  font: 500 11px/1 var(--font-num);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.h-page { font: 600 clamp(30px, 5vw, 44px)/1.15 var(--font-display); letter-spacing: .01em; }
.h-section { font: 600 clamp(22px, 3vw, 28px)/1.18 var(--font-display); }
.h-sub { font: 500 20px/1.35 var(--font-display); }

.lede {
  max-width: 60ch;
  font: 400 16px/1.75 var(--font-body);
  color: var(--ink-dim);
}

.u-num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
}

.u-dim { color: var(--ink-dim); }

/* ---------- 10. Exhibition tag ---------- */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 13px;
  border: 1px solid rgba(34, 224, 214, .3);
  border-radius: 999px;
  background: rgba(34, 224, 214, .06);
  color: var(--cyan);
  font: 500 11px/1 var(--font-num);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.section-tag::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.section-tag--amber {
  color: var(--amber);
  border-color: rgba(242, 178, 51, .38);
  background: rgba(242, 178, 51, .07);
}
.section-tag--orange {
  color: var(--orange);
  border-color: rgba(255, 122, 47, .38);
  background: rgba(255, 122, 47, .07);
}
.section-tag--red {
  color: var(--red);
  border-color: rgba(255, 74, 61, .38);
  background: rgba(255, 74, 61, .07);
}

/* ---------- 11. Plate ---------- */
.plate {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(155deg, rgba(14, 21, 38, .92), rgba(7, 11, 20, .7));
}
.plate::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 2px;
  background: var(--grad-cyan);
}
.plate--amber::after { background: var(--grad-amber); }
.plate--red::after { background: var(--grad-red); }

/* ---------- 12. Stats & ring ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat__num {
  font: 600 clamp(38px, 7vw, 72px)/1 var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  color: var(--ink);
}
.stat__num--cyan { color: var(--cyan); }
.stat__num--amber { color: var(--amber); }
.stat__num--orange { color: var(--orange); }

.stat__label {
  font: 500 12px/1.5 var(--font-num);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

.ring {
  --pct: 0;
  --ring-color: var(--cyan);
  position: relative;
  width: clamp(88px, 12vw, 118px);
  height: clamp(88px, 12vw, 118px);
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: conic-gradient(var(--ring-color) calc(var(--pct) * 1%), rgba(27, 39, 64, .85) 0);
}
.ring::before {
  content: '';
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--panel);
}
.ring__value {
  position: relative;
  font: 600 22px/1 var(--font-num);
  font-variant-numeric: tabular-nums;
  color: var(--ink);
}

/* ---------- 13. Image frames ---------- */
.img-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 90% at 18% 0%, rgba(34, 224, 214, .14), transparent 62%),
    linear-gradient(140deg, #101A2E, #070B14 62%);
}
.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 11, 20, 0) 46%, rgba(7, 11, 20, .72));
}
.img-frame--wide { aspect-ratio: 21 / 9; }
.img-frame--tall { aspect-ratio: 3 / 4; }
.img-frame--square { aspect-ratio: 1 / 1; }

.img-frame__cap {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  z-index: 2;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(7, 11, 20, .74);
  font: 500 11px/1.5 var(--font-num);
  letter-spacing: .08em;
  color: var(--ink-dim);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
}

/* ---------- 14. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  font: 500 11px/1 var(--font-num);
  letter-spacing: .1em;
  color: var(--muted);
}
.breadcrumb li { display: flex; align-items: center; gap: 9px; }
.breadcrumb li + li::before { content: '/'; color: var(--line); }
.breadcrumb a { color: var(--ink-dim); transition: color .2s var(--ease); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb [aria-current="page"] { color: var(--cyan); }

/* ---------- 15. Script-injected UI ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 95;
  width: 0;
  height: 2px;
  background: var(--grad-cyan);
  transition: width .12s linear;
  pointer-events: none;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 90;
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(34, 224, 214, .4);
  border-radius: 50%;
  background: rgba(14, 21, 38, .93);
  color: var(--cyan);
  font: 600 15px/1 var(--font-num);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .24s var(--ease), transform .24s var(--ease),
              visibility .24s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.to-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.to-top:hover { border-color: var(--mint); color: var(--mint); }

@media (max-width: 560px) {
  .to-top { right: 14px; bottom: 16px; width: 44px; height: 44px; }
}

/* ---------- 16. Reveal ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .24s var(--ease), transform .24s var(--ease);
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 17. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js [data-reveal] { opacity: 1; transform: none; }
  .nav-link:hover { transform: none; }
  .btn:hover { transform: none; }
  .to-top { transform: none; }
}