/* ============================================================
   乐宝体育站 · 共享样式 /assets/site.css
   头部命令栏 + 页脚坐标索引 + 通用组件
   ============================================================ */

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
main { display: block; }

/* ---------- variables ---------- */
:root {
  --ink: #0A2A23;
  --ink-2: #123A30;
  --ink-3: #1B4A3E;
  --night: #061814;
  --ice: #E6EDEA;
  --white: #F8FBF9;
  --cyan: #35F0C8;
  --teal: #14A99B;
  --orange: #FF6A2B;
  --mute: #93A39D;

  --line: rgba(230, 237, 234, 0.16);
  --line-strong: rgba(230, 237, 234, 0.34);
  --line-ice: rgba(10, 42, 35, 0.16);

  --shell-w: 1200px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 4px;
  --shadow: 0 2px 8px rgba(6, 24, 20, 0.32);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur: 200ms;

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

/* ---------- base ---------- */
html { scrollbar-color: var(--ink-3) var(--ink); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  background: var(--ink);
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

h1, h2, h3, h4 { font-weight: 900; line-height: 1.12; letter-spacing: 0.02em; color: var(--white); }
h1 { font-size: clamp(28px, 4.6vw, 56px); }
h2 { font-size: clamp(22px, 3.2vw, 36px); }
h3 { font-size: clamp(18px, 2vw, 22px); letter-spacing: 0.01em; }
h4 { font-size: 17px; letter-spacing: 0.02em; }
p { max-width: 68ch; }

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

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

#main-content { scroll-margin-top: 116px; }

/* ---------- utilities ---------- */
.shell {
  width: 100%;
  max-width: var(--shell-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; top: 8px; left: 8px; z-index: 999;
  padding: 10px 16px; border-radius: var(--radius);
  background: var(--cyan); color: var(--night);
  font-size: 13px; font-weight: 900; letter-spacing: 0.06em;
  transform: translateY(-170%);
  transition: transform 180ms var(--ease);
}
.skip-link:focus, .skip-link:focus-visible { transform: none; }

.label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
.num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--white);
}
.display {
  font-size: clamp(28px, 4.6vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--white);
}
.lede {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.7;
  color: var(--ice);
  opacity: 0.9;
  max-width: 62ch;
}
.rule { height: 1px; border: 0; margin: 0; background: var(--line); }

/* ---------- buttons ---------- */
.btn {
  --btn-bg: transparent;
  --btn-fg: var(--white);
  --btn-bd: var(--line-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--btn-bd);
  border-radius: var(--radius);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.btn--primary {
  --btn-bg: var(--cyan);
  --btn-fg: var(--night);
  --btn-bd: var(--cyan);
  font-weight: 900;
}
.btn--primary:hover { --btn-bg: #62f7d8; --btn-bd: #62f7d8; box-shadow: 0 0 0 3px rgba(53, 240, 200, 0.18); }
.btn--ghost { --btn-fg: var(--ice); --btn-bd: var(--line-strong); }
.btn--ghost:hover { --btn-fg: var(--cyan); --btn-bd: var(--cyan); }
.btn--line { --btn-fg: var(--cyan); --btn-bd: rgba(53, 240, 200, 0.5); }
.btn--line:hover { --btn-bg: rgba(53, 240, 200, 0.1); }
.btn--sm { padding: 8px 14px; font-size: 13px; letter-spacing: 0.05em; }
.btn--block { display: flex; width: 100%; }
.btn:active { transform: translateY(1px); }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 42, 35, 0.95);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 2px 8px rgba(6, 24, 20, 0.4);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

/* ---- status strip ---- */
.status-strip {
  background: var(--night);
  border-bottom: 1px solid rgba(53, 240, 200, 0.16);
  font-size: 12.5px;
}
.status-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 36px;
  padding-block: 4px;
}
.status-strip__text {
  display: flex;
  align-items: center;
  gap: 9px;
  max-width: none;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ice);
}
.status-strip__dot {
  flex: none;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 200, 0.18);
  animation: lb-pulse 2s var(--ease) infinite;
}
@keyframes lb-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.42; transform: scale(0.8); }
}
.status-strip__side { display: flex; align-items: center; gap: 18px; flex: none; }
.status-strip__meta { font-size: 10.5px; letter-spacing: 0.18em; color: var(--teal); }

.utilbar { display: flex; align-items: center; gap: 14px; }
.utilbar__item + .utilbar__item { padding-left: 14px; border-left: 1px solid var(--line); }
.utilbar__link {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mute);
  transition: color var(--dur) var(--ease);
}
.utilbar__link:hover { color: var(--cyan); }

/* ---- command bar ---- */
.cmdbar { position: relative; }
.cmdbar__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.4vw, 32px);
  min-height: 66px;
  padding-block: 10px;
}
.cmdbar__actions { display: flex; align-items: center; gap: 10px; margin-left: clamp(10px, 1.6vw, 20px); }

.cmdbar__progress {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  overflow: hidden;
  background: rgba(53, 240, 200, 0.08);
  pointer-events: none;
}
.cmdbar__progress-bar {
  display: block;
  width: 100%; height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--teal), var(--cyan));
  transition: transform 120ms linear;
}

/* ---- brand ---- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex: none;
  color: var(--white);
}
.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(53, 240, 200, 0.18), transparent 62%);
  overflow: hidden;
}
.brand__mark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(115deg, transparent 0 6px, rgba(53, 240, 200, 0.2) 6px 7px);
}
.brand__mark-dot {
  position: relative;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(53, 240, 200, 0.18);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-size: 17px; font-weight: 900; letter-spacing: 0.06em; color: var(--white); }
.brand__line { margin-top: 3px; font-size: 10.5px; letter-spacing: 0.16em; color: var(--teal); }

/* ---- nav (desktop) ---- */
.nav { display: flex; align-items: center; margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: clamp(0px, 0.8vw, 8px); }
.nav__item { position: relative; }
.nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 10px 10px;
  border-radius: var(--radius);
  color: var(--ice);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 10px; right: 10px; bottom: 3px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 220ms var(--ease);
}
.nav__link:hover { color: var(--white); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link[aria-current="page"] { color: var(--cyan); }
.nav__link[aria-current="page"]::after { transform: scaleX(1); }
.nav__index {
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--teal);
  transform: translateY(-3px);
}
.nav__link[aria-current="page"] .nav__index { color: var(--cyan); }
.nav__label { line-height: 1.2; }
.nav__foot { display: none; }

/* ---- nav toggle ---- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ice);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-toggle:hover { color: var(--cyan); border-color: var(--cyan); }
.nav-toggle__bars {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 16px; height: 12px;
}
.nav-toggle__bars span {
  display: block;
  width: 100%; height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 200ms var(--ease), opacity 160ms linear;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  position: relative;
  overflow: hidden;
  margin-top: clamp(48px, 7vw, 96px);
  background: linear-gradient(180deg, var(--ink) 0%, var(--night) 100%);
  border-top: 1px solid var(--line);
  color: var(--ice);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(230, 237, 234, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(230, 237, 234, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 72%);
}
.site-footer::after {
  content: "";
  position: absolute;
  top: 0; right: 0;
  width: min(46vw, 520px);
  height: 5px;
  background: linear-gradient(90deg, transparent, var(--teal), var(--cyan));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 4% 100%);
  pointer-events: none;
}

.footer__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.7fr 0.8fr 0.8fr 1.4fr;
  gap: clamp(24px, 3.5vw, 56px);
  padding-block: clamp(44px, 6vw, 80px) clamp(32px, 4vw, 56px);
}

.footer__brand .brand--footer .brand__name { font-size: 16px; }
.brand--footer .brand__line { font-size: 9.5px; letter-spacing: 0.18em; }
.footer__intro {
  margin-top: 18px;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(230, 237, 234, 0.72);
}
.footer__ruler {
  margin-top: 22px;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, rgba(230, 237, 234, 0.32) 0 1px, transparent 1px 14px);
  opacity: 0.85;
}
.footer__coord { margin-top: 10px; font-size: 10.5px; letter-spacing: 0.18em; color: var(--teal); }

.footer__col { min-width: 0; }
.footer__heading {
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 11px;
}
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__link {
  position: relative;
  display: inline-block;
  padding-left: 12px;
  font-size: 13.5px;
  color: rgba(230, 237, 234, 0.82);
  transition: color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.footer__link::before {
  content: "";
  position: absolute;
  left: 0; top: 0.78em;
  width: 6px; height: 1px;
  background: var(--teal);
  transition: width var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.footer__link:hover { color: var(--cyan); transform: translateX(2px); }
.footer__link:hover::before { width: 10px; background: var(--cyan); }

.contact-list { display: flex; flex-direction: column; }
.contact-list__item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 6px 10px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
}
.contact-list__item--wide { grid-template-columns: auto 1fr; }
.contact-list__key {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
}
.contact-list__value { font-size: 13.5px; color: var(--white); word-break: break-word; }
.copy-btn {
  padding: 4px 8px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--mute);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}
.copy-btn:hover { color: var(--cyan); border-color: var(--cyan); }
.copy-btn.is-copied {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--night);
  font-weight: 700;
}
.footer__note {
  margin-top: 14px;
  max-width: 32ch;
  font-size: 12px;
  line-height: 1.8;
  color: rgba(230, 237, 234, 0.6);
}
.footer__contact-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  border-bottom: 1px solid rgba(53, 240, 200, 0.4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.footer__contact-link:hover { color: var(--white); border-color: var(--white); }

.footer__base {
  position: relative;
  z-index: 1;
  background: rgba(6, 24, 20, 0.66);
  border-top: 1px solid var(--line);
}
.footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px;
}
.footer__copyright { max-width: none; font-size: 12px; color: var(--mute); letter-spacing: 0.04em; }
.legal-links { display: flex; flex-wrap: wrap; align-items: center; gap: 0 14px; }
.legal-links li + li { padding-left: 14px; border-left: 1px solid var(--line); }
.legal-links__link { font-size: 12px; color: var(--mute); transition: color var(--dur) var(--ease); }
.legal-links__link:hover { color: var(--cyan); }
.footer__icp {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--mute);
  transition: color var(--dur) var(--ease);
}
.footer__icp:hover { color: var(--cyan); }

/* ============================================================
   SHARED CONTENT COMPONENTS
   ============================================================ */
.section { padding-block: clamp(40px, 6vw, 80px); }
.section--tight { padding-block: clamp(24px, 3.5vw, 44px); }
.section--panel { background: var(--ink-2); border-block: 1px solid var(--line); }
.section--ice { background: var(--ice); color: var(--ink); }
.section--ice h1, .section--ice h2, .section--ice h3, .section--ice h4 { color: var(--ink); }
.section--ice .label { color: var(--ink-3); }
.section--ice .lede { color: var(--ink-2); opacity: 1; }

.cut-edge {
  height: clamp(26px, 5vw, 60px);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 18%);
}

.grid { display: grid; gap: clamp(16px, 2.5vw, 32px); }
.grid--7-5 { grid-template-columns: 7fr 5fr; }
.grid--8-4 { grid-template-columns: 8fr 4fr; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }

.prose { max-width: 68ch; }
.prose p + p { margin-top: 16px; }
.prose h2, .prose h3 { margin-top: clamp(28px, 4vw, 44px); margin-bottom: 12px; }
.prose ul, .prose ol { margin-top: 12px; }
.prose li { position: relative; padding-left: 16px; margin-top: 8px; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.78em;
  width: 6px; height: 1px;
  background: var(--teal);
}
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(53, 240, 200, 0.35); }
.prose a:hover { border-bottom-color: var(--cyan); }

/* breadcrumbs */
.breadcrumbs { border-bottom: 1px solid var(--line); padding-block: 14px; }
.breadcrumbs__list { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12.5px; }
.breadcrumbs__item { display: flex; align-items: center; gap: 8px; color: var(--mute); }
.breadcrumbs__link { color: var(--mute); transition: color var(--dur) var(--ease); }
.breadcrumbs__link:hover { color: var(--cyan); }
.breadcrumbs__sep { color: rgba(147, 163, 157, 0.6); font-family: var(--font-mono); }

/* index rail */
.index-rail {
  position: sticky;
  top: 128px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}
.index-rail__item { display: flex; align-items: baseline; gap: 8px; }
.index-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--teal);
}
.index-rail__label { font-size: 13px; color: var(--mute); transition: color var(--dur) var(--ease); }
.index-rail__item:hover .index-rail__label,
.index-rail__item[aria-current="true"] .index-rail__label { color: var(--white); }
.index-rail__item[aria-current="true"] .index-rail__num { color: var(--cyan); }

/* cards & panels */
.card {
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(27, 74, 62, 0.35);
}
.card__title { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; color: var(--white); }
.card__body { padding: 18px; }
.card--ice { background: var(--ice); border-color: var(--line-ice); color: var(--ink); }
.card--ice .card__title { color: var(--ink); }
.card--ice .card__head { background: rgba(27, 74, 62, 0.08); border-bottom-color: var(--line-ice); }

/* data band */
.data-band {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.data-band__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  background: var(--ink-2);
}
.data-band__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--cyan);
}
.data-band__label {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
}

/* chips */
.chip-group { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  color: var(--ice);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.chip:hover { color: var(--cyan); border-color: var(--cyan); }
.chip[aria-pressed="true"], .chip.is-active {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--night);
  font-weight: 700;
}
.chip__count { font-family: var(--font-mono); font-size: 10.5px; opacity: 0.8; }

/* timeline */
.timeline { position: relative; padding-left: 26px; border-left: 1px solid var(--line-strong); }
.timeline__node { position: relative; padding-bottom: 26px; }
.timeline__node:last-child { padding-bottom: 0; }
.timeline__node::before {
  content: "";
  position: absolute;
  left: -32px; top: 7px;
  width: 11px; height: 11px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--ink);
  transition: background-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.timeline__node.is-active::before,
.timeline__node:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 240, 200, 0.14);
}

/* accordion */
.accordion { border-top: 1px solid var(--line); }
.accordion__item { border-bottom: 1px solid var(--line); }
.accordion__trigger {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  width: 100%;
  padding: 18px 0;
  border: 0;
  background: none;
  color: var(--white);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}
.accordion__trigger:hover { color: var(--cyan); }
.accordion__trigger::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}
.accordion__trigger[aria-expanded="true"]::after { content: "–"; }
.accordion__panel { padding: 0 0 20px; font-size: 15px; color: rgba(230, 237, 234, 0.82); }

/* media */
.media {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--ink-3), var(--night));
  box-shadow: var(--shadow);
}
.media > img, .media__img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 24, 20, 0.18) 0%, rgba(6, 24, 20, 0.76) 100%);
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }
.media__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 2;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ice);
}
.media__tag {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 2;
  padding: 4px 9px;
  border-radius: var(--radius);
  background: var(--cyan);
  color: var(--night);
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* reveal */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
html.js [data-reveal].is-in { opacity: 1; transform: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1080px) {
  .cmdbar__inner { min-height: 60px; }
  .status-strip__meta { display: none; }

  .nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    display: block;
    margin-left: 0;
    z-index: 5;
    padding: 8px var(--gutter) 22px;
    background: linear-gradient(180deg, var(--ink-2) 0%, var(--night) 100%);
    border-top: 1px solid rgba(53, 240, 200, 0.22);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 24px rgba(6, 24, 20, 0.45);
    max-height: calc(100vh - 96px);
    max-height: calc(100dvh - 96px);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 180ms var(--ease), transform 180ms var(--ease), visibility 180ms linear;
  }
  .nav[data-open] { opacity: 1; visibility: visible; transform: none; }

  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__item { border-bottom: 1px solid var(--line); }
  .nav__link {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    gap: 14px;
    padding: 15px 4px;
    border-radius: 0;
    font-size: 16px;
    font-weight: 700;
  }
  .nav__link::after { display: none; }
  .nav__link::before {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 2px;
    background: var(--cyan);
    transform: scaleY(0);
    transform-origin: 50% 0;
    transition: transform 180ms var(--ease);
  }
  .nav__link[aria-current="page"] { padding-left: 14px; background: rgba(53, 240, 200, 0.07); }
  .nav__link[aria-current="page"]::before { transform: scaleY(1); }
  .nav__index { font-size: 11px; transform: none; }

  .nav__foot { display: block; margin-top: 20px; }
  .nav__utils { display: flex; gap: 18px; margin-top: 14px; }
  .nav__util-link {
    font-size: 13px;
    color: var(--mute);
    letter-spacing: 0.04em;
    transition: color var(--dur) var(--ease);
  }
  .nav__util-link:hover { color: var(--cyan); }
  .nav__foot-note { margin-top: 16px; font-size: 10.5px; }

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

  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__brand { grid-column: 1 / -1; }
  .index-rail { position: static; }
}

@media (max-width: 900px) {
  .grid--7-5, .grid--8-4, .grid--2, .grid--3 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .cmdbar__cta { display: none; }
  .brand__line { display: none; }
  .brand__mark { width: 34px; height: 34px; }
  .brand__name { font-size: 16px; }
  .status-strip__text { font-size: 11.5px; gap: 7px; }
  .status-strip__inner { min-height: 32px; }
  .utilbar { display: none; }
  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__base-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
  .legal-links li + li { padding-left: 12px; }
  .nav-toggle__text { display: none; }
  .nav-toggle { padding: 10px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .status-strip__dot { animation: none; }
  .cmdbar__progress-bar { transition: none; }
  html.js [data-reveal] { opacity: 1; transform: none; transition: none; }
}