/* =========================================================
   BV 宝威体育 · shared site kit  (/assets/site.css)
   夜间赛场指挥台：蓝图网格 + 切角面板 + 等宽数字
   ========================================================= */

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

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

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

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

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

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

button { background: none; border: 0; }

a { color: inherit; text-decoration: none; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink-900: #071A14;
  --ink-800: #0C2A20;
  --line: #164A3A;
  --mint: #3DFFB6;
  --paper: #E8FFF6;
  --mist: #8FB9AA;
  --amber: #FFB347;
  --coral: #FF6B5A;
  --fog: #A9FFE0;

  --font-display: "Oswald", "Barlow Condensed", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "SFMono-Regular", "Consolas", "Menlo", monospace;

  --shell: 1240px;
  --cut: 18px;
  --cut-sm: 8px;
  --chamfer: polygon(18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%, 0 18px);
  --chamfer-sm: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  --ring: 0 0 0 2px #071A14, 0 0 0 4px var(--mint);
}

/* ---------- 3. Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(760px 420px at 8% -6%, rgba(61, 255, 182, .10), transparent 68%),
    radial-gradient(640px 460px at 98% 2%, rgba(22, 74, 58, .70), transparent 70%),
    repeating-linear-gradient(90deg, rgba(22, 74, 58, .30) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, rgba(22, 74, 58, .22) 0 1px, transparent 1px 88px);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--paper);
}

p { max-width: 70ch; }

strong { color: var(--paper); }

::selection { background: rgba(61, 255, 182, .28); color: #ffffff; }

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

/* ---------- 4. Layout helpers ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.page-main {
  display: block;
  padding-block: clamp(20px, 3vw, 40px) clamp(52px, 8vw, 96px);
}

.section { padding-block: clamp(36px, 6vw, 80px); }

.section-head {
  display: grid;
  gap: 10px;
  max-width: 66ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--mint);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--mint);
  flex: none;
}

.section-title {
  font-size: clamp(1.55rem, 3.4vw, 2.5rem);
  letter-spacing: .04em;
}

.section-note {
  color: var(--mist);
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 5. Grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 26px);
}

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

/* ---------- 6. Skip link ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -72px;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  background: var(--mint);
  color: #04211A;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  clip-path: var(--chamfer-sm);
  transition: top .18s ease;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 12px;
  outline: none;
  box-shadow: var(--ring);
}

/* ---------- 7. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(7, 26, 20, .95);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.header-rail {
  background:
    linear-gradient(90deg, rgba(12, 42, 32, .95) 0%, rgba(7, 26, 20, .95) 62%, rgba(22, 74, 58, .55) 100%);
  border-bottom: 1px solid rgba(22, 74, 58, .85);
}

.rail-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
}

.rail-note {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 12px;
  letter-spacing: .10em;
  color: var(--mist);
  max-width: none;
}

.rail-dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(61, 255, 182, .18);
  animation: bv-pulse 3.2s ease-in-out infinite;
}

@keyframes bv-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 3px rgba(61, 255, 182, .18); }
  50% { opacity: .55; box-shadow: 0 0 0 6px rgba(61, 255, 182, .05); }
}

.rail-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: none;
}

.rail-link {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .18s ease, border-color .18s ease;
}

.rail-link:hover { color: var(--mint); border-color: var(--mint); }

.header-main {
  background: linear-gradient(180deg, rgba(12, 42, 32, .55), rgba(7, 26, 20, 0) 90%);
}

.header-grid {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
  min-height: 76px;
}

/* brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
  color: var(--paper);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #04211A;
  background: linear-gradient(140deg, var(--mint) 0%, #19C98D 100%);
  clip-path: var(--chamfer-sm);
}

.brand-text { display: block; }

.brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .16em;
  line-height: 1.1;
  color: var(--paper);
}

.brand-sub {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--mist);
}

/* mobile toggle */
.nav-toggle {
  display: none;
  margin-left: auto;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 0 14px;
  background: rgba(12, 42, 32, .85);
  border: 1px solid var(--line);
  color: var(--paper);
  font-size: 12px;
  letter-spacing: .16em;
  cursor: pointer;
  clip-path: var(--chamfer-sm);
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.nav-toggle-label { pointer-events: none; }

.nav-toggle-icon {
  position: relative;
  display: block;
  width: 18px;
  height: 12px;
  pointer-events: none;
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--mint);
  transition: transform .18s ease, top .18s ease, bottom .18s ease, background .18s ease;
}

.nav-toggle-icon::before { top: 0; }
.nav-toggle-icon::after { bottom: 0; }

.site-header[data-open] .nav-toggle {
  background: var(--mint);
  border-color: var(--mint);
  color: #04211A;
}

.site-header[data-open] .nav-toggle-icon::before,
.site-header[data-open] .nav-toggle-icon::after { background: #04211A; }

.site-header[data-open] .nav-toggle-icon::before { top: 5px; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle-icon::after { bottom: 5px; transform: rotate(-45deg); }

/* nav */
.site-nav { margin-left: auto; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item { display: block; }

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 12px;
  font-size: 13px;
  letter-spacing: .10em;
  color: var(--mist);
  transition: color .16s ease, background-color .16s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 8px;
  height: 2px;
  background: var(--mint);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .18s ease;
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(22, 74, 58, .45);
}

.nav-link[aria-current="page"] { color: var(--mint); }

.nav-link[aria-current="page"]::after { transform: scaleX(1); }

/* scroll progress */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, #19C98D 0%, var(--mint) 60%, var(--fog) 100%);
}

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  text-align: center;
  border: 1px solid transparent;
  clip-path: var(--chamfer-sm);
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.btn-primary {
  background: var(--mint);
  border-color: var(--mint);
  color: #04211A;
  font-weight: 700;
}

.btn-primary:hover {
  background: #6DFFC8;
  border-color: #6DFFC8;
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(12, 42, 32, .55);
  border-color: var(--line);
  color: var(--paper);
}

.btn-ghost:hover {
  border-color: var(--mint);
  color: var(--mint);
  transform: translateY(-1px);
}

.btn-sm {
  min-height: 40px;
  padding: 0 14px;
  font-size: 12px;
  letter-spacing: .10em;
}

/* ---------- 9. Panels & data pieces ---------- */
.panel {
  position: relative;
  padding: clamp(18px, 2.4vw, 28px);
  background: linear-gradient(165deg, rgba(12, 42, 32, .94) 0%, rgba(7, 26, 20, .94) 100%);
  border: 1px solid var(--line);
  clip-path: var(--chamfer);
}

.panel::after {
  content: "";
  position: absolute;
  right: 14px;
  bottom: 14px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  opacity: .8;
}

.panel--flat {
  background: rgba(12, 42, 32, .55);
  border-color: rgba(22, 74, 58, .8);
}

.panel-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mint);
}

.panel-title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  letter-spacing: .06em;
  color: var(--paper);
}

.panel-body {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.status-dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(61, 255, 182, .16);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 26px;
  padding: 0 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .10em;
  color: var(--mist);
  background: rgba(22, 74, 58, .35);
  border: 1px solid var(--line);
}

.tag--amber {
  color: var(--amber);
  background: rgba(255, 179, 71, .10);
  border-color: rgba(255, 179, 71, .5);
}

.tag--coral {
  color: var(--coral);
  background: rgba(255, 107, 90, .10);
  border-color: rgba(255, 107, 90, .5);
}

.stat { display: grid; gap: 4px; }

.stat-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  line-height: 1;
  color: var(--mint);
}

.stat-label {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.meter { display: grid; gap: 7px; }

.meter-track {
  position: relative;
  height: 10px;
  background: rgba(22, 74, 58, .85);
  overflow: hidden;
  clip-path: var(--chamfer-sm);
}

.meter-fill {
  display: block;
  height: 100%;
  width: var(--v, 0%);
  background: linear-gradient(90deg, #19C98D 0%, var(--mint) 100%);
  transition: width .5s ease;
}

.meter-fill--amber {
  background: linear-gradient(90deg, #C2812B 0%, var(--amber) 100%);
}

.meter-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

/* ---------- 10. Breadcrumb & prose ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--line);
}

.breadcrumb a {
  color: var(--mist);
  transition: color .16s ease;
}

.breadcrumb a:hover { color: var(--mint); }

.breadcrumb [aria-current="page"] { color: var(--paper); }

.prose {
  max-width: 72ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--mist);
}

.prose > * + * { margin-top: 1em; }

.prose h2 {
  margin-top: 1.9em;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  letter-spacing: .03em;
  color: var(--paper);
}

.prose h3 {
  margin-top: 1.5em;
  font-size: 1.12rem;
  letter-spacing: .03em;
  color: var(--paper);
}

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

.prose a {
  color: var(--mint);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul {
  display: grid;
  gap: .4em;
  padding-left: 1.15em;
  list-style: disc;
}

/* ---------- 11. Media frames (image placeholders) ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--ink-800) 0%, var(--ink-900) 100%);
  border: 1px solid var(--line);
  clip-path: var(--chamfer);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    repeating-linear-gradient(90deg, rgba(22, 74, 58, .55) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(22, 74, 58, .40) 0 1px, transparent 1px 44px);
}

.media-frame > img,
.media-frame > picture,
.media-frame > picture > img,
.media-frame > svg {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame--wide { aspect-ratio: 16 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--strip { aspect-ratio: 21 / 9; }

.media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--mist);
}

/* ---------- 12. Tabs ---------- */
.tabs { display: block; }

.tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--mist);
  background: rgba(12, 42, 32, .75);
  border: 1px solid transparent;
  clip-path: var(--chamfer-sm);
  cursor: pointer;
  transition: color .16s ease, background-color .16s ease, border-color .16s ease;
}

.tab:hover {
  color: var(--paper);
  border-color: var(--line);
}

.tab[aria-selected="true"] {
  background: var(--mint);
  border-color: var(--mint);
  color: #04211A;
  font-weight: 700;
}

.tabpanel { padding-top: 4px; }

.tabpanel[hidden] { display: none; }

.tabpanel:focus-visible { outline-offset: 6px; }

/* ---------- 13. Filter chips ---------- */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}

.chip:hover {
  color: var(--paper);
  border-color: var(--mint);
}

.chip[aria-pressed="true"] {
  background: rgba(61, 255, 182, .14);
  border-color: var(--mint);
  color: var(--mint);
  font-weight: 600;
}

.empty-note {
  margin-top: 16px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--amber);
  background: rgba(255, 179, 71, .08);
  border-left: 2px solid var(--amber);
}

.empty-note[hidden] { display: none; }

/* ---------- 14. Accordion (details) ---------- */
.accordion {
  background: rgba(12, 42, 32, .55);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-sm);
}

.accordion + .accordion { margin-top: 10px; }

.accordion summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  min-height: 56px;
  padding: 14px 18px;
  font-size: 15px;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}

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

.accordion summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--mint);
}

.accordion[open] summary::after {
  content: "–";
}

.accordion-body {
  padding: 0 18px 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 15. Reveal ---------- */
[data-reveal].is-armed {
  opacity: 0;
  transform: translateY(16px);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
  transition: opacity .45s ease, transform .45s ease;
}

/* ---------- 16. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(40px, 7vw, 88px);
  background: linear-gradient(180deg, #09231C 0%, var(--ink-900) 62%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--mint) 22%, var(--line) 58%, transparent 100%);
  opacity: .7;
}

.footer-top { padding-block: clamp(36px, 5vw, 64px) clamp(20px, 3vw, 32px); }

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.footer-brand { min-width: 0; }

.footer-lede {
  margin-top: 18px;
  max-width: 40ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.footer-cta { margin-top: 20px; }

.footer-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 3vw, 32px);
}

.footer-group { min-width: 0; }

.footer-group-title {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mint);
}

.footer-links { display: grid; gap: 2px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  color: var(--mist);
  transition: color .16s ease, padding-left .16s ease;
}

.footer-link:hover {
  color: var(--paper);
  padding-left: 4px;
}

.footer-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 28px;
  margin-top: clamp(24px, 4vw, 40px);
  padding-top: 22px;
  border-top: 1px solid rgba(22, 74, 58, .85);
}

.contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
  color: var(--paper);
  max-width: none;
}

.contact-key {
  display: inline-block;
  min-width: 60px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.contact-note {
  grid-column: 1 / -1;
  max-width: 78ch;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.footer-bottom {
  padding-block: 16px 26px;
  border-top: 1px solid rgba(22, 74, 58, .7);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
}

.footer-icp,
.footer-copy { max-width: none; }

/* ---------- 17. Responsive ---------- */
@media (max-width: 1080px) {
  .nav-link { padding: 0 9px; font-size: 12.5px; letter-spacing: .06em; }
  .nav-link::after { left: 9px; right: 9px; }
}

@media (max-width: 980px) {
  .col-3, .col-4 { grid-column: span 6; }
  .col-5, .col-6, .col-7, .col-8, .col-9 { grid-column: span 12; }

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

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    margin-left: 0;
    padding: 10px 0 16px;
    background: #08201A;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 22px 40px rgba(0, 0, 0, .45);
    max-height: calc(100vh - 100%);
    overflow-y: auto;
  }

  .site-header[data-open] .site-nav { display: block; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 clamp(12px, 4vw, 24px);
  }

  .nav-link {
    width: 100%;
    min-height: 52px;
    padding: 0 12px;
    font-size: 14px;
    letter-spacing: .08em;
    border-bottom: 1px solid rgba(22, 74, 58, .55);
  }

  .nav-link::after { display: none; }

  .nav-link[aria-current="page"] {
    color: var(--mint);
    background: rgba(61, 255, 182, .09);
    box-shadow: inset 3px 0 0 var(--mint);
  }

  .footer-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .rail-link { display: none; }
  .rail-note { font-size: 11px; letter-spacing: .06em; }
  .header-grid { min-height: 68px; }
  .brand-mark { width: 38px; height: 38px; font-size: 13px; }
  .brand-name { font-size: 17px; letter-spacing: .12em; }
  .brand-sub { font-size: 10px; letter-spacing: .12em; }
}

@media (max-width: 640px) {
  body { font-size: 15.5px; }

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

  .footer-index { grid-template-columns: minmax(0, 1fr); }
  .footer-contact { grid-template-columns: minmax(0, 1fr); }
  .contact-key { min-width: 52px; }
  .footer-legal { flex-direction: column; align-items: flex-start; }
  .btn { width: 100%; }
  .btn-sm { width: auto; }
  .footer-cta { width: 100%; }
}

@media (max-width: 420px) {
  .rail-note { max-width: 52vw; }
  .brand-sub { display: none; }
}

/* ---------- 18. Motion & print safeguards ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  [data-reveal].is-armed {
    opacity: 1;
    transform: none;
  }

  [data-reveal].is-visible { transition: none; }

  .meter-fill { transition: none; }
}