/* ============================================================
   777电玩城 · 共享站点样式 /assets/site.css
   深夜电玩城霓虹导览屏 × 编辑部坐标索引
   ============================================================ */

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

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

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

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

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

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

/* ---------- 2. Design Tokens ---------- */
:root {
  --bg: #0B0714;
  --bg-deep: #1A1030;
  --violet: #A855F7;
  --cyan: #22D3EE;
  --amber: #FF8A3D;
  --mint: #5EEAD4;
  --haze: #C7C4D4;
  --white: #F7F5FF;
  --coral: #FF5C8A;
  --line: #3B2A57;
  --line-soft: rgba(168, 85, 247, 0.22);
  --ink-on-amber: #1A1030;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --container: 1180px;
  --gutter: clamp(1.15rem, 4vw, 3rem);
  --header-h: 72px;
  --cut: 18px;
  --cut-sm: 10px;

  --ease: cubic-bezier(0.22, 0.8, 0.28, 1);
  --shadow-neon: 0 0 26px rgba(168, 85, 247, 0.45);
  --shadow-cyan: 0 0 22px rgba(34, 211, 238, 0.35);
}

/* ---------- 3. Base Typography ---------- */
body {
  min-height: 100dvh;
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 82% -10%, rgba(168, 85, 247, 0.20), transparent 55%),
    radial-gradient(circle at 6% 4%, rgba(34, 211, 238, 0.12), transparent 45%);
  background-repeat: no-repeat;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.7;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.02em;
  color: var(--white);
  text-wrap: balance;
}

h1 { font-size: clamp(2.4rem, 5.6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.25rem, 2.2vw, 1.6rem); }

p { max-width: 74ch; }

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color 0.2s var(--ease);
}
a:hover { color: var(--white); }

strong, b { font-weight: 700; color: var(--white); }

::selection {
  background: var(--violet);
  color: var(--white);
}

/* ---------- 4. Accessibility Utilities ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

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

.skip-link {
  position: fixed;
  top: 0.6rem;
  left: 0.6rem;
  z-index: 999;
  padding: 0.7rem 1.1rem;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--ink-on-amber);
  background: var(--amber);
  text-decoration: none;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transform: translateY(-160%);
  transition: transform 0.22s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  color: var(--ink-on-amber);
  outline: 2px solid var(--white);
  outline-offset: 2px;
}

/* ---------- 5. Layout ---------- */
.container {
  width: 100%;
  max-width: calc(var(--container) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--wide { max-width: calc(1440px + var(--gutter) * 2); }

.section { padding-block: clamp(2.75rem, 7vw, 5.5rem); }
.section--tight { padding-block: clamp(1.75rem, 4vw, 3rem); }

.section__head {
  display: grid;
  gap: 0.9rem;
  max-width: 68ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.75rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.section__title {
  font-size: clamp(1.85rem, 4vw, 3.1rem);
  letter-spacing: 0.015em;
}

.lede {
  font-size: clamp(1rem, 0.96rem + 0.35vw, 1.14rem);
  line-height: 1.75;
  color: var(--haze);
  max-width: 62ch;
}

.prose { max-width: 72ch; color: var(--haze); }
.prose > * + * { margin-top: 1.05rem; }
.prose h2, .prose h3 { color: var(--white); margin-top: 2rem; }
.prose ul, .prose ol { padding-left: 1.2rem; list-style: disc; }
.prose li + li { margin-top: 0.4rem; }
.prose strong { color: var(--white); }

.grid { display: grid; gap: clamp(1.25rem, 3vw, 2.5rem); }

.grid--split {
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  align-items: start;
}

.grid--index {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 230px), 1fr));
  gap: 1px;
  background-color: var(--line);
  border: 1px solid var(--line);
}

.aside-rail {
  position: sticky;
  top: calc(var(--header-h) + 1.5rem);
  display: grid;
  gap: 1rem;
  align-content: start;
}

/* ---------- 6. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.7rem 1.25rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
  transition: background-color 0.22s var(--ease), color 0.22s var(--ease),
              border-color 0.22s var(--ease), box-shadow 0.22s var(--ease), transform 0.18s var(--ease);
}
.btn:focus-visible { outline-offset: -4px; }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--amber);
  color: var(--ink-on-amber);
  box-shadow: 0 0 0 rgba(255, 138, 61, 0);
}
.btn--primary:hover,
.btn--primary:focus-visible {
  background: #FFA063;
  color: var(--ink-on-amber);
  box-shadow: 0 0 24px rgba(255, 138, 61, 0.55);
}

.btn--ghost {
  background: rgba(34, 211, 238, 0.06);
  border-color: var(--cyan);
  color: var(--cyan);
}
.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: rgba(34, 211, 238, 0.16);
  color: var(--white);
  box-shadow: var(--shadow-cyan);
}

.btn--quiet {
  padding-inline: 0.2rem;
  border: 0;
  background: none;
  color: var(--haze);
  clip-path: none;
}
.btn--quiet:hover,
.btn--quiet:focus-visible { color: var(--cyan); }

.btn--block { width: 100%; }

/* ---------- 7. Tags & Stats ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.5;
  color: var(--cyan);
  border: 1px solid currentColor;
  background: rgba(34, 211, 238, 0.08);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}
.tag--violet { color: var(--violet); background: rgba(168, 85, 247, 0.12); }
.tag--amber  { color: var(--amber);  background: rgba(255, 138, 61, 0.12); }
.tag--mint   { color: var(--mint);   background: rgba(94, 234, 212, 0.10); }
.tag--coral  { color: var(--coral);  background: rgba(255, 92, 138, 0.12); }

.stat { display: grid; gap: 0.15rem; }
.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  color: var(--white);
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--haze);
}

/* ---------- 8. Media Frames ---------- */
.media {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  background: linear-gradient(150deg, var(--bg-deep), #0B0714 72%);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}
.media img,
.media picture img,
.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--hero   { aspect-ratio: 4 / 3; }
.media--wide   { aspect-ratio: 16 / 9; }
.media--tall   { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }

.media--glow::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 78% 14%, rgba(168, 85, 247, 0.38), transparent 58%),
              radial-gradient(circle at 12% 92%, rgba(34, 211, 238, 0.26), transparent 55%);
  mix-blend-mode: screen;
}

.media__caption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--haze);
}

/* ---------- 9. Breadcrumb ---------- */
.breadcrumb { margin-block: 1.4rem 0; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--haze);
}
.breadcrumb__item { display: inline-flex; align-items: center; gap: 0.45rem; }
.breadcrumb__item:not(:first-child)::before {
  content: "›";
  color: var(--violet);
  margin-right: 0.1rem;
}
.breadcrumb__link {
  color: var(--haze);
  text-decoration: none;
}
.breadcrumb__link:hover,
.breadcrumb__link:focus-visible { color: var(--cyan); }
.breadcrumb__item[aria-current="page"] { color: var(--white); }

/* ---------- 10. Segmented Tabs ---------- */
.segmented { display: block; }
.segmented__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
}
.segmented__btn {
  appearance: none;
  padding: 0.45rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--haze);
  background: transparent;
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease),
              border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.segmented__btn:hover { color: var(--white); border-color: var(--violet); }
.segmented__btn:focus-visible { outline-offset: -4px; }
.segmented__btn[aria-selected="true"] {
  color: var(--white);
  border-color: var(--cyan);
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.22), rgba(168, 85, 247, 0.30));
  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.35);
}
.segmented__panel { padding-top: clamp(1.1rem, 2.5vw, 1.8rem); }
.segmented__panel[hidden] { display: none; }

/* ---------- 11. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.35s var(--ease), border-color 0.35s var(--ease),
              box-shadow 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
}
.site-header[data-scrolled="true"] {
  background: rgba(26, 16, 48, 0.94);
  border-bottom-color: var(--line);
  box-shadow: 0 20px 42px -32px rgba(34, 211, 238, 0.7);
  backdrop-filter: blur(10px);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  overflow: hidden;
  background: rgba(59, 42, 87, 0.55);
  pointer-events: none;
}
.scroll-progress__bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--amber));
  transition: transform 0.12s linear;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.75rem);
  min-height: var(--header-h);
  padding-block: 0.55rem;
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--white);
  text-decoration: none;
  flex-shrink: 0;
}
.brand:hover { color: var(--white); }

.brand__mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--bg);
  background: linear-gradient(140deg, var(--cyan), var(--violet) 78%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 70% 100%, 0 100%);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.55);
}

.brand__text { display: grid; gap: 0.1rem; }
.brand__name {
  display: block;
  font-size: 1.06rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.2;
}
.brand__tagline {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.2em;
  color: var(--haze);
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}
.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 0.55rem 0.55rem;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--haze);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  bottom: 0.18rem;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s var(--ease);
}
.site-nav__link:hover,
.site-nav__link:focus-visible { color: var(--white); }
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--cyan); }
.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: linear-gradient(90deg, var(--cyan), var(--mint));
}

.site-nav__utils {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding-left: 1rem;
  margin-left: 0.25rem;
  border-left: 1px solid var(--line);
}
.site-nav__util {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--haze);
  text-decoration: none;
  white-space: nowrap;
}
.site-nav__util:hover,
.site-nav__util:focus-visible { color: var(--cyan); }

/* Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}
.header-cta { padding: 0.62rem 1.05rem; font-size: 0.88rem; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.8rem;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--white);
  background: rgba(168, 85, 247, 0.12);
  border: 1px solid var(--line);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}
.nav-toggle:hover { border-color: var(--cyan); }
.nav-toggle:focus-visible { outline-offset: -4px; }

.nav-toggle__bars {
  display: grid;
  gap: 3px;
  width: 18px;
}
.nav-toggle__bars span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--cyan);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.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); }

/* ---------- 12. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-block: clamp(2.5rem, 6vw, 4rem) 1.6rem;
  color: var(--haze);
  background-color: var(--bg-deep);
  background-image:
    radial-gradient(120% 90% at 10% 0%, rgba(168, 85, 247, 0.20), transparent 58%),
    radial-gradient(90% 70% at 92% 12%, rgba(34, 211, 238, 0.12), transparent 60%);
  background-repeat: no-repeat;
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 46%, var(--amber));
  opacity: 0.9;
}

.footer-inner { display: block; }

.footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.85fr);
  gap: clamp(1.75rem, 4vw, 3.5rem);
  align-items: start;
}

.footer__brand { display: grid; gap: 1rem; justify-items: start; }

.footer__summary {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--haze);
  max-width: 34ch;
}

.footer__cta { margin-top: 0.15rem; }

.footer__links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: clamp(1.25rem, 3vw, 2.25rem);
}

.footer__col { display: grid; gap: 0.9rem; align-content: start; }

.footer__title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--white);
}
.footer__title::after {
  content: "";
  display: block;
  width: 22px;
  height: 2px;
  margin-top: 0.55rem;
  background: linear-gradient(90deg, var(--violet), transparent);
}

.footer__list { display: grid; gap: 0.55rem; }

.footer__link {
  font-size: 0.92rem;
  color: var(--haze);
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible {
  color: var(--cyan);
  padding-left: 0.35rem;
}

.footer__contact {
  display: grid;
  gap: 1rem;
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px dashed var(--line);
}

.footer__contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem 2rem;
}
.footer__contact-item { display: grid; gap: 0.2rem; }
.footer__contact-key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer__contact-val {
  font-size: 0.95rem;
  color: var(--white);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.footer__note {
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--haze);
  max-width: 68ch;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 1.5rem;
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  color: var(--haze);
}
.footer__legal { color: var(--haze); }
.footer__meta { color: rgba(199, 196, 212, 0.78); }

/* ---------- 13. Reveal ---------- */
.has-js [data-reveal][data-reveal-armed] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.has-js [data-reveal][data-reveal-armed].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 14. Responsive ---------- */
@media (max-width: 1024px) {
  .site-nav__utils { display: none; }
  .site-nav__link { padding-inline: 0.42rem; font-size: 0.9rem; }
  .site-nav__link::after { left: 0.42rem; right: 0.42rem; }
}

@media (max-width: 899px) {
  :root { --header-h: 64px; }

  .header-inner { gap: 0.6rem; }
  .brand__mark { width: 38px; height: 38px; font-size: 0.66rem; }
  .brand__tagline { display: none; }
  .brand__name { font-size: 0.98rem; }

  .header-actions { margin-left: auto; }
  .header-cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: block;
    margin-left: 0;
    padding: 0.9rem var(--gutter) 1.5rem;
    max-height: calc(100dvh - var(--header-h));
    overflow-y: auto;
    background: linear-gradient(180deg, rgba(26, 16, 48, 0.99), rgba(11, 7, 20, 0.99));
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 60px -34px rgba(34, 211, 238, 0.55);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), visibility 0.3s var(--ease);
  }
  .site-nav[data-open="true"] {
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .site-nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .site-nav__link {
    display: block;
    padding: 0.85rem 0.25rem;
    font-size: 1.02rem;
    border-bottom: 1px solid var(--line);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] {
    padding-left: 0.85rem;
    border-left: 3px solid var(--cyan);
    background: rgba(34, 211, 238, 0.07);
  }

  .site-nav__utils {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.7rem;
    margin: 0.9rem 0 0;
    padding: 0.9rem 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .footer__top { grid-template-columns: 1fr; }
  .footer__summary { max-width: 46ch; }
  .footer__bottom { flex-direction: column; align-items: flex-start; }

  .grid--split { grid-template-columns: 1fr; }
  .aside-rail { position: static; }
}

@media (max-width: 560px) {
  .footer__contact-list { grid-template-columns: 1fr; }
  h1 { font-size: clamp(2rem, 9vw, 2.8rem); }
  .btn { padding: 0.65rem 1rem; }
}

/* ---------- 15. Motion & Contrast Preferences ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .has-js [data-reveal][data-reveal-armed] {
    opacity: 1;
    transform: none;
  }
  .scroll-progress__bar { transition: none; }
}

@media (prefers-contrast: more) {
  :root {
    --haze: #E4E2EE;
    --line: #6B5590;
  }
  .site-nav__link[aria-current="page"] { text-decoration: underline; }
}