/* ==========================================================================
   B体育登录入口安装免费官方站 — 共享样式
   /assets/site.css
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 8rem;
  -webkit-text-size-adjust: 100%;
}

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

ul,
ol {
  padding: 0;
}

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

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

::selection {
  background: rgba(0, 184, 176, 0.22);
  color: var(--color-ink);
}

/* ---------- Design Tokens ---------- */
:root {
  /* 主色调 */
  --color-paper: #F5F2EA;
  --color-paper-layered: #F2F0EA;
  --color-frame: #172A3A;
  --color-ink: #1E262B;
  --color-muted: #5E6A73;
  --color-border: #B9C0C8;
  --color-cyan: #00B8B0;
  --color-purple: #7A5AF8;
  --color-neon: #00E5FF;
  --color-success: #2ECC71;
  --color-amber: #F5A524;

  /* 可访问文案变体 */
  --color-cyan-text: #006B66;
  --color-purple-text: #5B3FE0;
  --color-link: #006B66;

  /* 字体 */
  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", "Cascadia Code", Consolas, monospace;

  /* 布局 */
  --container-w: 1340px;
  --header-h: 116px;
  --radius: 2px;
  --shadow-paper: 0 1px 0 var(--color-paper-layered), 0 4px 16px rgba(23, 42, 58, 0.06);
  --shadow-card: 0 1px 0 var(--color-paper-layered), 0 2px 8px rgba(23, 42, 58, 0.05);
  --transition: 150ms ease;
}

/* ---------- Base ---------- */
body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-ink);
}

a {
  color: var(--color-link);
}

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

::placeholder {
  color: var(--color-muted);
  opacity: 1;
}

/* ---------- Accessibility ---------- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 1rem;
  z-index: 300;
  padding: 0.625rem 1.125rem;
  background: var(--color-cyan);
  color: var(--color-frame);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  border-radius: var(--radius);
  transition: top 150ms ease;
}

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

#main-content:focus {
  outline: none;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-frame);
  color: #FFFFFF;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 20px rgba(23, 42, 58, 0.18);
}

.header-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--color-cyan);
  z-index: 102;
  pointer-events: none;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 1rem clamp(1.25rem, 3vw, 2.5rem);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: #FFFFFF;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  background: var(--color-cyan);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.brand-line {
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  white-space: nowrap;
}

.brand-subline {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3125rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.78);
  white-space: nowrap;
  border-radius: var(--radius);
}

.status-dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.16);
}

.status-copy {
  line-height: 1;
}

/* Nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  background: #FFFFFF;
  transition: transform 150ms ease, opacity 150ms ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

/* Site nav */
.site-nav {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-list {
  display: flex;
  align-items: stretch;
  list-style: none;
  max-width: var(--container-w);
  margin-inline: auto;
  padding: 0 clamp(0.75rem, 2vw, 2.5rem);
}

.nav-item {
  flex: 0 0 auto;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6875rem 1rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.66);
  text-decoration: none;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  transition: color 150ms ease, background 150ms ease;
}

.nav-item:first-child .nav-link {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #FFFFFF;
  background: rgba(0, 184, 176, 0.1);
  outline: none;
}

.nav-link[aria-current="page"] {
  color: #FFFFFF;
}

.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--color-cyan);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-cyan);
  letter-spacing: 0.1em;
  line-height: 1;
  transform: translateY(1px);
}

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

.nav-label {
  white-space: nowrap;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-frame);
  color: rgba(255, 255, 255, 0.78);
  border-top: 2px solid var(--color-amber);
  margin-top: clamp(3rem, 8vw, 6rem);
}

.footer-edge {
  height: 3px;
  background: linear-gradient(90deg, var(--color-amber) 0 18%, var(--color-purple) 18% 34%, var(--color-cyan) 34% 100%);
}

.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 4fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  max-width: var(--container-w);
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.25rem, 3vw, 2.5rem) 2rem;
}

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

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: #FFFFFF;
  text-decoration: none;
}

.footer-logo-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  background: var(--color-cyan);
  color: #FFFFFF;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.footer-logo-copy {
  font-size: 0.9375rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.footer-digest {
  margin-top: 1rem;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 48ch;
}

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

.footer-heading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #FFFFFF;
  margin-bottom: 0.875rem;
  text-transform: uppercase;
}

.footer-heading-num {
  font-family: var(--font-mono);
  color: var(--color-amber);
  font-size: 0.75rem;
  letter-spacing: 0;
}

.footer-list {
  list-style: none;
  display: grid;
  gap: 0.375rem;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.68);
}

.footer-list li {
  overflow-wrap: anywhere;
}

.footer-list a {
  color: rgba(255, 255, 255, 0.68);
  text-decoration: none;
  transition: color 150ms ease;
}

.footer-list a:hover,
.footer-list a:focus-visible {
  color: var(--color-cyan);
  outline-color: var(--color-cyan);
}

.footer-bottom {
  max-width: var(--container-w);
  margin-inline: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem clamp(1.25rem, 3vw, 2.5rem);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.58);
}

.footer-copy,
.footer-icp {
  margin: 0;
}

/* ---------- Layout & Type ---------- */
.container {
  width: min(100%, var(--container-w));
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 3vw, 2.5rem);
}

.page-section {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-section--tight {
  padding-block: clamp(1.5rem, 4vw, 2.5rem);
}

.page-section--dark {
  background: var(--color-frame);
  color: rgba(255, 255, 255, 0.8);
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-purple-text);
}

.section-kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: currentColor;
}

.section-kicker--light {
  color: rgba(255, 255, 255, 0.6);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 100;
  font-size: clamp(2.75rem, 6vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-top: 0.5rem;
}

.section-title--light {
  color: #FFFFFF;
}

.section-lead {
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-muted);
  margin-top: 1rem;
}

.text-link {
  color: var(--color-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 150ms ease;
}

.text-link:hover {
  color: var(--color-cyan);
}

/* ---------- Frame & Cards ---------- */
.frame-window {
  position: relative;
  border: 1px solid var(--color-border);
  background: var(--color-paper);
  padding: clamp(1rem, 3vw, 2.5rem);
}

.frame-window::before,
.frame-window::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 0 solid var(--color-cyan);
  pointer-events: none;
}

.frame-window::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}

.frame-window::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.card {
  position: relative;
  background: var(--color-paper);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-card);
  padding: 1.25rem 1.375rem;
}

.card--layered {
  box-shadow: 4px 4px 0 var(--color-paper-layered), 3px 3px 0 1px var(--color-border);
}

.card--dark {
  background: var(--color-frame);
  border-color: var(--color-frame);
  color: rgba(255, 255, 255, 0.8);
}

.card--dark h1,
.card--dark h2,
.card--dark h3,
.card--dark h4 {
  color: #FFFFFF;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.grid--split {
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
}

.grid--split-wide {
  grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
}

.grid--triple {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--quad {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: transparent;
  border: 1px solid var(--color-ink);
  border-radius: 0;
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: color 150ms ease, background 150ms ease, border-color 150ms ease;
}

.btn:hover {
  background: var(--color-ink);
  color: var(--color-paper);
}

.btn:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

.btn--primary:hover {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: var(--color-frame);
}

.btn--accent {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  color: var(--color-frame);
}

.btn--accent:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border: 1px solid var(--color-border);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  line-height: 1.4;
  color: var(--color-muted);
  white-space: nowrap;
}

.tag--cyan {
  color: var(--color-cyan-text);
  border-color: rgba(0, 184, 176, 0.4);
  background: rgba(0, 184, 176, 0.06);
}

.tag--purple {
  color: var(--color-purple-text);
  border-color: rgba(122, 90, 248, 0.36);
  background: rgba(122, 90, 248, 0.05);
}

.tag--amber {
  color: #9A6A14;
  border-color: rgba(245, 165, 36, 0.4);
  background: rgba(245, 165, 36, 0.07);
}

.tag--green {
  color: #1E8449;
  border-color: rgba(46, 204, 113, 0.4);
  background: rgba(46, 204, 113, 0.05);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  gap: 0;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
}

.breadcrumb li + li::before {
  content: "/";
  margin-inline: 0.5rem;
  color: var(--color-border);
}

.breadcrumb a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 150ms ease;
}

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

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

/* ---------- Media ---------- */
.media-frame {
  position: relative;
  background: var(--color-paper-layered);
  border: 1px solid var(--color-border);
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.media-frame--portrait {
  aspect-ratio: 4 / 5;
}

.media-frame--video {
  aspect-ratio: 16 / 9;
}

.media-frame--square {
  aspect-ratio: 1 / 1;
}

.media-frame__placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  background: repeating-linear-gradient(
    0deg,
    var(--color-paper-layered) 0,
    var(--color-paper-layered) 14px,
    rgba(185, 192, 200, 0.18) 14px,
    rgba(185, 192, 200, 0.18) 15px
  );
}

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

.media-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* ---------- Notice ---------- */
.notice-box {
  display: flex;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-amber);
  background: var(--color-paper);
  font-size: 0.875rem;
  line-height: 1.7;
}

.notice-box__kicker {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9A6A14;
  flex-shrink: 0;
}

/* ---------- Data Panel ---------- */
.data-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
}

.data-cell {
  background: var(--color-paper);
  padding: 1rem 1.125rem;
}

.data-cell__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.data-cell__value {
  margin-top: 0.375rem;
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--color-ink);
}

.data-cell__value--cyan {
  color: var(--color-cyan-text);
}

.data-cell__value--purple {
  color: var(--color-purple-text);
}

/* ---------- Timeline ---------- */
.timeline {
  list-style: none;
  border-left: 1px solid var(--color-border);
  padding-left: 1.5rem;
  display: grid;
  gap: 1.75rem;
}

.timeline-item {
  position: relative;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 4px);
  top: 0.375rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-cyan);
  border: 2px solid var(--color-paper);
  box-shadow: 0 0 0 1px var(--color-border);
}

.timeline-item--purple::before {
  background: var(--color-purple);
}

.timeline-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-muted);
  margin-bottom: 0.25rem;
}

.timeline-title {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--color-ink);
}

.timeline-body {
  margin-top: 0.25rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-muted);
}

/* ---------- Ruler & Slant ---------- */
.ruler {
  height: 10px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: repeating-linear-gradient(
    90deg,
    var(--color-border) 0 1px,
    transparent 1px 40px,
    var(--color-border) 40px 42px,
    transparent 42px 80px
  );
}

.slant {
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}

.slant--bottom-left {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .grid--split,
  .grid--split-wide {
    grid-template-columns: 1fr;
  }

  .grid--quad {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--triple {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .header-inner {
    padding-block: 0.75rem;
  }

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

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-frame);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: none;
    box-shadow: 0 16px 32px rgba(23, 42, 58, 0.28);
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 0.5rem 0.75rem;
  }

  .nav-link {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.875rem 1rem;
  }

  .nav-item:first-child .nav-link {
    border-left: none;
  }

  .nav-link[aria-current="page"]::after {
    left: auto;
    right: auto;
    width: 3px;
    height: auto;
    top: 0;
    bottom: 0;
    left: 0;
  }
}

@media (max-width: 900px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 600px) {
  .header-status {
    display: none;
  }

  .brand-line {
    font-size: 0.8125rem;
  }

  .brand-subline {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .grid--triple,
  .grid--quad {
    grid-template-columns: 1fr;
  }

  .data-panel {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}