/* ============ 1. Tokens ============ */
:root {
  --deep-blue: #0A1A2F;
  --fluorescent-green: #00FFA3;
  --dark-red: #7A1F3D;
  --ink-blue: #0D2B45;
  --ice-white: #E8F2FF;
  --steel-blue: #3D5A80;
  --violet-glow: #4C3F91;
  --amber-warning: #FFB300;
  --soft-green: #2A6E5A;
  --gray-mist: #AFC2D9;

  --bg-main: var(--deep-blue);
  --bg-panel: var(--ink-blue);
  --text-main: var(--ice-white);
  --text-dim: var(--gray-mist);
  --line: var(--steel-blue);
  --accent: var(--fluorescent-green);
  --warn: var(--dark-red);

  --font-display: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: "Noto Serif SC", "Source Han Serif SC", "Songti SC", Georgia, serif;
  --font-mono: "SF Mono", SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;

  --content-max: 1200px;
  --header-h: 3.5rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --shadow-1: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-2: 0 14px 34px rgba(0, 0, 0, 0.45);
}

/* ============ 2. Reset ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 0.75rem);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-main);
  background-image:
    radial-gradient(1100px 520px at 82% -8%, rgba(76, 63, 145, 0.18), transparent 62%),
    linear-gradient(rgba(61, 90, 128, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 90, 128, 0.07) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  color: var(--text-main);
  text-wrap: balance;
}

p {
  margin: 0 0 1.5rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--text-main);
}

ul, ol {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

address {
  font-style: normal;
}

hr {
  border: 0;
  height: 1px;
  margin: 2rem 0;
  background: linear-gradient(90deg, var(--line), transparent);
}

blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.5rem;
  border-left: 3px solid var(--accent);
  background: rgba(0, 255, 163, 0.05);
  color: var(--text-dim);
}

::selection {
  background: rgba(0, 255, 163, 0.3);
  color: var(--deep-blue);
}

/* ============ 3. Utilities ============ */
.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.cut-text {
  text-shadow:
    2px 2px 0 rgba(0, 255, 163, 0.3),
    4px 4px 0 rgba(122, 31, 61, 0.25);
}

/* ============ 4. Layout ============ */
.container {
  width: min(100% - 2rem, var(--content-max));
  margin-inline: auto;
}

.section {
  padding-block: 3rem;
}

.section--tight {
  padding-block: 1.5rem;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 2rem;
}

.section-head__index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--accent);
  white-space: nowrap;
}

.section-head__title {
  margin: 0;
  font-size: 1.75rem;
  letter-spacing: 0.02em;
}

.section-head__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line), transparent);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ============ 5. Buttons & Badges ============ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.375rem;
  overflow: hidden;
  background: var(--accent);
  color: var(--deep-blue);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  border: 0;
  cursor: pointer;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), color 0.2s var(--ease);
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  right: -25%;
  width: 40%;
  height: 100%;
  background: rgba(10, 26, 47, 0.16);
  transform: skewX(-18deg);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 255, 163, 0.22);
}

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

.btn--ghost {
  background: transparent;
  color: var(--text-main);
  box-shadow: inset 0 0 0 1px var(--line);
}

.btn--ghost::before {
  background: rgba(61, 90, 128, 0.12);
}

.btn--ghost:hover {
  color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--accent), 0 8px 24px rgba(0, 255, 163, 0.1);
}

.btn--sm {
  padding: 0.5rem 0.875rem;
  font-size: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  color: var(--text-main);
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.08em;
}

.badge--warn {
  background: rgba(122, 31, 61, 0.35);
  border-color: var(--warn);
  color: #ffd3dc;
}

.badge--ok {
  background: rgba(42, 110, 90, 0.3);
  border-color: var(--soft-green);
  color: #baf5de;
}

.badge--update {
  background: rgba(255, 179, 0, 0.14);
  border-color: var(--amber-warning);
  color: var(--amber-warning);
}

/* ============ 6. Skip Link & Progress ============ */
.skip-link {
  position: fixed;
  top: -3.5rem;
  left: 1rem;
  z-index: 1300;
  padding: 0.625rem 1rem;
  background: var(--accent);
  color: var(--deep-blue);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 800;
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 50%, calc(100% - 10px) 100%, 0 100%);
  transition: top 0.2s var(--ease);
}

.skip-link:focus {
  top: 0.75rem;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 1200;
  background: linear-gradient(90deg, var(--accent) 0%, var(--violet-glow) 70%, var(--dark-red) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

/* ============ 7. Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 26, 47, 0.93);
  border-bottom: 1px solid var(--line);
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 4px, transparent 4px 16px);
  opacity: 0.45;
  pointer-events: none;
}

.site-header__bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: var(--header-h);
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: 1rem;
}

.coord {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--text-dim);
  text-transform: uppercase;
  white-space: nowrap;
}

.coord::before {
  content: "//";
  color: var(--accent);
}

/* Brand */
.brand {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
}

.brand__mark {
  width: 2rem;
  height: 2rem;
  color: var(--accent);
}

.brand__mark svg {
  display: block;
  width: 100%;
  height: 100%;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  color: var(--text-main);
  text-shadow: 2px 2px 0 rgba(0, 255, 163, 0.2);
}

.brand__sub {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  text-transform: uppercase;
}

/* Ticker */
.ticker {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  height: 2rem;
  overflow: hidden;
}

.ticker__tag {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.2rem 0.45rem;
  background: var(--accent);
  color: var(--deep-blue);
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.ticker__viewport {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}

.ticker__track {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  will-change: transform;
  animation: ticker-move 38s linear infinite;
}

.ticker:hover .ticker__track {
  animation-play-state: paused;
}

@keyframes ticker-move {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.ticker__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 2rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
}

.ticker__item b {
  color: var(--text-main);
  font-weight: 700;
}

.ticker__item i {
  font-family: var(--font-mono);
  font-style: normal;
  color: var(--accent);
  font-weight: 700;
}

.ticker__item::after {
  content: "";
  width: 4px;
  height: 4px;
  margin-left: 1.5rem;
  background: var(--violet-glow);
  opacity: 0.55;
}

/* Navigation */
.main-nav {
  flex: 0 0 auto;
  margin-left: auto;
}

.main-nav__list {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.625rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-dim);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.main-nav__link:hover {
  color: var(--text-main);
  background: rgba(61, 90, 128, 0.25);
}

.main-nav__link[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(0, 255, 163, 0.07);
}

.main-nav__index {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--violet-glow);
}

.main-nav__link[aria-current="page"] .main-nav__index {
  color: var(--accent);
}

.main-nav__label {
  line-height: 1;
}

.nav-foot {
  display: none;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.nav-foot::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 0.5rem;
  background: var(--dark-red);
}

/* Nav toggle */
.nav-toggle {
  display: none;
  flex: 0 0 auto;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-main);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.nav-toggle:hover,
.nav-toggle[aria-expanded="true"] {
  border-color: var(--accent);
  background: rgba(0, 255, 163, 0.06);
}

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.nav-toggle__ic {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle__line {
  display: block;
  width: 1.25rem;
  height: 2px;
  background: currentColor;
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}

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

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

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

/* Overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: 980;
  background: rgba(4, 12, 22, 0.68);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease);
}

.nav-overlay[data-open] {
  opacity: 1;
  pointer-events: auto;
}

body.nav-locked {
  overflow: hidden;
}

/* ============ 8. Back to Top ============ */
.back-to-top {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 960;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.back-to-top[data-visible] {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.back-to-top:hover {
  border-color: var(--accent);
  box-shadow: 0 6px 20px rgba(0, 255, 163, 0.18);
}

/* ============ 9. Footer ============ */
.site-footer {
  position: relative;
  margin-top: 5rem;
  background: linear-gradient(180deg, var(--bg-panel) 0%, var(--bg-main) 58%);
  border-top: 1px solid var(--line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 6px, transparent 6px 24px);
  opacity: 0.55;
  pointer-events: none;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 2.5rem;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 3.5rem 1rem 2.5rem;
}

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

.footer-col--brand .brand {
  margin-bottom: 0.875rem;
}

.footer-brand__slogan {
  margin: 0.875rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--text-main);
}

.footer-brand__desc {
  margin: 0;
  max-width: 24em;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-dim);
}

.footer-brand__badge {
  margin: 1rem 0 0;
}

.footer-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-main);
}

.footer-title::before {
  content: "/";
  color: var(--accent);
  font-weight: 900;
}

.footer-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li {
  margin-top: 0.625rem;
}

.footer-links a {
  color: var(--text-dim);
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 0.25rem;
}

.footer-note {
  margin: 1.25rem 0 0;
  font-family: var(--font-body);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.footer-contact {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-contact li {
  display: grid;
  grid-template-columns: 3.5em 1fr;
  gap: 0.625rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(61, 90, 128, 0.5);
  font-size: 0.8125rem;
  color: var(--text-dim);
}

.footer-contact li:first-child {
  border-top: 1px dashed rgba(61, 90, 128, 0.5);
}

.footer-contact span:first-child {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.site-footer__base {
  border-top: 1px solid rgba(61, 90, 128, 0.45);
}

.site-footer__base-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  max-width: var(--content-max);
  margin-inline: auto;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-dim);
}

.site-footer__base-inner p {
  margin: 0;
}

.footer-icp {
  letter-spacing: 0.08em;
}

.footer-coord {
  margin-left: auto;
  letter-spacing: 0.08em;
}

/* ============ 10. Components ============ */
.card {
  position: relative;
  padding: 1.5rem;
  background: linear-gradient(160deg, rgba(13, 43, 69, 0.82), rgba(10, 26, 47, 0.92));
  border: 1px solid var(--line);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 255, 163, 0.6);
  box-shadow: var(--shadow-2);
}

.card__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 900;
  color: var(--text-main);
}

.card__text {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-dim);
}

.media {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-panel);
  background-image:
    linear-gradient(rgba(61, 90, 128, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 90, 128, 0.18) 1px, transparent 1px);
  background-size: 24px 24px, 24px 24px;
}

.media::after {
  content: "";
  display: block;
  padding-bottom: 56.25%;
}

.media--4-3::after {
  padding-bottom: 75%;
}

.media--1-1::after {
  padding-bottom: 100%;
}

.media--9-16::after {
  padding-bottom: 177.78%;
}

.media img,
.media svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding-block: 0.75rem;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

.breadcrumbs a {
  color: var(--text-dim);
  text-decoration: none;
}

.breadcrumbs a:hover {
  color: var(--accent);
}

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

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: left;
  color: var(--text-dim);
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(61, 90, 128, 0.35);
  color: var(--text-main);
}

.data-table tbody tr:hover td {
  background: rgba(0, 255, 163, 0.05);
}

/* ============ 11. Responsive ============ */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    z-index: 1050;
    display: flex;
    flex-direction: column;
    width: min(22rem, 88vw);
    margin-left: 0;
    padding: 1.5rem 1.25rem 2rem;
    overflow-y: auto;
    background: linear-gradient(180deg, #0a2540 0%, var(--deep-blue) 100%);
    border-left: 1px solid var(--line);
    box-shadow: -18px 0 40px rgba(0, 0, 0, 0.45);
    transform: translateX(100%);
    transition: transform 0.3s var(--ease), visibility 0.3s;
    visibility: hidden;
  }

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

  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
  }

  .main-nav__link {
    justify-content: space-between;
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid rgba(61, 90, 128, 0.4);
    border-bottom: 1px solid rgba(61, 90, 128, 0.4);
  }

  .main-nav__link:hover {
    border-color: var(--line);
    background: rgba(61, 90, 128, 0.2);
  }

  .main-nav__link[aria-current="page"] {
    border-color: rgba(0, 255, 163, 0.5);
    background: rgba(0, 255, 163, 0.07);
    color: var(--accent);
  }

  .main-nav__link[aria-current="page"]::after {
    display: none;
  }

  .nav-foot {
    display: block;
  }

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

@media (max-width: 900px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  :root {
    --header-h: 3.25rem;
  }

  .coord,
  .ticker {
    display: none;
  }

  .nav-toggle {
    margin-left: auto;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding-top: 2.5rem;
  }

  .site-footer__base-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.375rem;
  }

  .footer-coord {
    margin-left: 0;
  }

  .back-to-top {
    right: 0.75rem;
    bottom: 0.75rem;
  }
}

/* ============ 12. Focus & Reduced Motion ============ */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }

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

  .ticker__track {
    animation: none;
  }
}