/* ============================================================
   博喜体育 BOXICI SPORTS
   共享样式 /assets/site.css
   设计语言：竞技蓝图 Stadium Blueprint
   ============================================================ */

/* ---------- 1. Design Tokens ---------- */
:root {
  --color-primary: #0B3D2E;
  --color-primary-dark: #082A20;
  --color-primary-ink: #123D2D;
  --color-gold: #D4AF37;
  --color-gold-light: #F0E68C;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-muted: #3A6B5A;
  --color-silver: #C0C0C0;

  --font-heading: "PingFang SC Semibold", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;

  --header-height: 72px;
  --container-width: 1240px;
  --radius-pill: 999px;
  --radius-lg: 20px;
  --radius-md: 12px;

  --transition-1: 160ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-2: 240ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 2. Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-black);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

button {
  background: none;
  border: none;
  cursor: pointer;
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color var(--transition-1);
}

a:hover {
  color: var(--color-gold);
}

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

ul,
ol {
  padding-left: 2rem;
}

::selection {
  background: var(--color-gold);
  color: var(--color-primary);
}

/* ---------- 3. Accessibility ---------- */
.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;
}

:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

a:focus-visible,
.btn:focus-visible,
.nav-toggle:focus-visible {
  box-shadow: 0 0 0 6px rgba(11, 61, 46, 0.42);
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 3000;
  padding: 12px 24px;
  background: var(--color-gold);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: top var(--transition-2);
}

.skip-link:focus-visible {
  top: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

#main-content {
  scroll-margin-top: calc(var(--header-height) + 16px);
  outline: none;
}

.site-main {
  min-height: 60vh;
}

/* ---------- 4. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1200;
  min-height: var(--header-height);
  background: linear-gradient(180deg, rgba(8, 42, 32, 0.97), rgba(11, 61, 46, 0.92));
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.18);
}

.site-header::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
}

.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 3;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-light) 100%);
  transform-origin: 0 50%;
  transform: scaleX(0);
}

.header-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container-width);
  min-height: var(--header-height);
  margin-inline: auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  margin-right: auto;
  color: var(--color-white);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-white);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-gold) 0%, #B9962F 55%, #8E7220 100%);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  border-radius: 10px;
  clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.35);
  transition: transform var(--transition-1), box-shadow var(--transition-1);
}

.brand:hover .brand-mark {
  transform: skewX(-6deg);
  box-shadow: 0 6px 26px rgba(212, 175, 55, 0.55);
}

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

.brand-text strong {
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-white);
}

.brand-text small {
  margin-top: 2px;
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(212, 175, 55, 0.85);
}

.header-coord {
  display: inline-block;
  flex-shrink: 0;
  padding-left: 16px;
  border-left: 1px solid rgba(212, 175, 55, 0.3);
  font-family: var(--font-heading);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(212, 175, 55, 0.55);
  white-space: nowrap;
  cursor: default;
}

/* ---------- 5. Navigation ---------- */
.site-nav {
  position: static;
  z-index: 1;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px;
  list-style: none;
  background: rgba(255, 255, 255, 0.055);
  border: 1px solid rgba(212, 175, 55, 0.28);
  border-radius: var(--radius-pill);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.nav-list a {
  position: relative;
  display: block;
  padding: 9px 18px;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.84);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color var(--transition-1), color var(--transition-1), box-shadow var(--transition-1);
}

.nav-list a:hover {
  background: rgba(212, 175, 55, 0.13);
  color: var(--color-gold-light);
}

.nav-list a[aria-current="page"] {
  background: linear-gradient(135deg, var(--color-gold) 0%, #B9962F 100%);
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(212, 175, 55, 0.4);
}

.nav-list a[aria-current="page"]:hover {
  background: linear-gradient(135deg, var(--color-gold-light) 0%, var(--color-gold) 100%);
  color: var(--color-primary-dark);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  flex-shrink: 0;
  gap: 6px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(212, 175, 55, 0.4);
  background: rgba(255, 255, 255, 0.04);
  transition: background-color var(--transition-1);
}

.nav-toggle:hover {
  background: rgba(212, 175, 55, 0.1);
}

.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto;
  border-radius: 2px;
  background: var(--color-gold);
  transition: opacity var(--transition-1), transform var(--transition-1), background-color var(--transition-1);
}

.nav-toggle:hover .nav-toggle-bar {
  background: var(--color-gold-light);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(4) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ---------- 6. Footer ---------- */
.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: rgba(255, 255, 255, 0.8);
  padding: 72px 0 0;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-light) 40%, transparent 90%);
}

.site-footer::after {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 0.9fr 1.3fr;
  gap: 48px;
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 0 24px 56px;
}

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

.footer-brand-col .brand {
  margin-right: 0;
}

.brand-footer .brand-mark {
  width: 38px;
  height: 38px;
  font-size: 19px;
}

.footer-trust {
  max-width: 340px;
  margin-top: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.62);
}

.footer-coord {
  margin-top: 20px;
  font-family: var(--font-heading);
  font-size: 10px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(212, 175, 55, 0.4);
}

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

.footer-heading {
  position: relative;
  margin: 0 0 18px;
  padding-bottom: 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-gold);
  border-bottom: 1px solid rgba(212, 175, 55, 0.22);
}

.footer-heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
}

.footer-list {
  display: grid;
  gap: 10px;
  list-style: none;
  padding: 0;
}

.footer-list a {
  display: inline-block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-1), transform var(--transition-1);
}

.footer-list a:hover {
  color: var(--color-gold-light);
  transform: translateX(4px);
}

.footer-contact-list {
  display: grid;
  gap: 12px;
  list-style: none;
  padding: 0;
}

.footer-contact-list li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
}

.footer-contact-label {
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-gold);
}

.footer-contact-value {
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.72);
  word-break: break-all;
}

.footer-bottom {
  position: relative;
  z-index: 1;
  max-width: var(--container-width);
  margin-inline: auto;
  padding: 18px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 24px;
  border-top: 1px solid rgba(212, 175, 55, 0.18);
}

.footer-copy,
.footer-icp {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.55);
}

/* ---------- 7. Layout Primitives ---------- */
.container {
  width: min(100% - 48px, var(--container-width));
  margin-inline: auto;
}

.container-narrow {
  width: min(100% - 48px, 860px);
  margin-inline: auto;
}

.page-content {
  padding-top: calc(var(--header-height) + 40px);
}

.section {
  padding-block: clamp(48px, 7vw, 88px);
}

.section-header {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.section-index {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.section-index::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold), transparent);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin: 0;
  letter-spacing: -0.01em;
}

.section-desc {
  max-width: 620px;
  margin-top: 6px;
  font-size: 1.0625rem;
  color: #4A5C54;
}

.section-inverse {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.82);
}

.section-inverse::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.035) 1px, transparent 1px),
    linear-gradient(135deg, transparent 30%, rgba(212, 175, 55, 0.05) 50%, transparent 70%);
  background-size: 56px 56px, 56px 56px, 220px 220px;
  pointer-events: none;
}

.section-inverse .container {
  position: relative;
  z-index: 1;
}

.section-inverse .section-title {
  color: var(--color-white);
}

.section-inverse .section-desc {
  color: rgba(255, 255, 255, 0.68);
}

.section-inverse .section-index {
  color: var(--color-gold-light);
}

.page-hero {
  position: relative;
  overflow: hidden;
  background: var(--color-primary);
  padding: calc(var(--header-height) + 48px) 0 56px;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, transparent 30%, rgba(212, 175, 55, 0.07) 50%, transparent 70%);
  background-size: 48px 48px, 48px 48px, 220px 220px;
  pointer-events: none;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.16) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  margin: 8px 0 12px;
  color: var(--color-white);
  font-size: clamp(2.2rem, 5vw, 3.75rem);
  line-height: 1.16;
  letter-spacing: 0.01em;
}

.page-hero-desc {
  max-width: 620px;
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.74);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin: 0 0 14px;
  list-style: none;
  font-size: 13px;
}

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

.breadcrumb li + li::before {
  content: '/';
  margin-right: 6px;
  color: rgba(255, 255, 255, 0.35);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
}

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

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

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.card-grid > * {
  grid-column: span 4;
}

.card-grid > .span-6 {
  grid-column: span 6;
}

.card-grid > .span-8 {
  grid-column: span 8;
}

.divider-gold {
  width: 72px;
  height: 3px;
  margin: 24px 0;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
}

.stripe-angle {
  display: block;
  width: 160px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold), rgba(212, 175, 55, 0.1));
  clip-path: polygon(0 0, 100% 0, calc(100% - 28px) 100%, 0 100%);
}

/* ---------- 8. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 26px;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-1), color var(--transition-1), border-color var(--transition-1), box-shadow var(--transition-1), transform var(--transition-1);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold) 0%, #B9962F 100%);
  color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 175, 55, 0.45);
  color: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border-color: rgba(212, 175, 55, 0.75);
  color: var(--color-gold);
}

.btn-outline:hover {
  background: rgba(212, 175, 55, 0.1);
  border-color: var(--color-gold-light);
  color: var(--color-gold-light);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 12px;
}

/* ---------- 9. Cards & Panels ---------- */
.data-card {
  position: relative;
  overflow: hidden;
  padding: 26px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-silver);
  border-radius: var(--radius-lg);
  box-shadow: 0 2px 10px rgba(11, 61, 46, 0.05);
  transition: transform var(--transition-1), border-color var(--transition-1), box-shadow var(--transition-1);
}

.data-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-gold-light));
  transition: width var(--transition-2);
}

.data-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: 0 14px 36px rgba(11, 61, 46, 0.12);
}

.data-card:hover::after {
  width: 100%;
}

.glass-panel {
  padding: 28px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(212, 175, 55, 0.24);
  border-radius: var(--radius-lg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  color: rgba(255, 255, 255, 0.84);
}

.glass-panel h2,
.glass-panel h3,
.glass-panel h4 {
  color: var(--color-white);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: rgba(212, 175, 55, 0.1);
  color: var(--color-gold);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---------- 10. Images ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-ink) 0%, var(--color-primary) 100%);
  border: 1px solid rgba(212, 175, 55, 0.18);
}

.img-frame::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

.img-frame--square::before {
  padding-top: 100%;
}

.img-frame--portrait::before {
  padding-top: 125%;
}

.img-frame--wide::before {
  padding-top: 62.5%;
}

.img-frame > img,
.img-frame > .img-placeholder {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.img-frame > img {
  object-fit: cover;
}

.img-placeholder {
  display: grid;
  place-items: center;
  color: rgba(212, 175, 55, 0.45);
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background-image:
    linear-gradient(rgba(212, 175, 55, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.06) 1px, transparent 1px),
    linear-gradient(135deg, var(--color-primary-ink) 0%, var(--color-primary) 100%);
  background-size: 32px 32px, 32px 32px, auto;
}

/* ---------- 11. Scroll UI ---------- */
.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 900;
  display: none;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 1px solid rgba(212, 175, 55, 0.65);
  color: var(--color-gold);
  font-size: 18px;
  line-height: 1;
  box-shadow: 0 10px 30px rgba(11, 61, 46, 0.35);
  cursor: pointer;
  transition: background-color var(--transition-1), color var(--transition-1), transform var(--transition-1), opacity var(--transition-1);
}

.back-to-top.is-visible {
  display: grid;
}

.back-to-top:hover {
  background: var(--color-gold);
  color: var(--color-primary);
  transform: translateY(-3px);
}

/* ---------- 12. Responsive ---------- */
@media (max-width: 980px) {
  .header-coord {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 16px;
    right: 16px;
    padding: 10px;
    background: rgba(10, 48, 36, 0.98);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 24px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition-2), transform var(--transition-2), visibility var(--transition-2);
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    max-height: calc(100vh - var(--header-height) - 24px);
    overflow-y: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 4px;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
  }

  .nav-list a {
    padding: 13px 22px;
    border-radius: 14px;
    font-size: 15px;
    white-space: normal;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }

  .footer-brand-col {
    grid-column: 1 / -1;
  }

  .card-grid > *,
  .card-grid > .span-6,
  .card-grid > .span-8 {
    grid-column: span 6;
  }
}

@media (max-width: 620px) {
  :root {
    --header-height: 64px;
  }

  .header-inner {
    padding-inline: 16px;
  }

  .brand-text strong {
    font-size: 16px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .container,
  .container-narrow,
  .footer-grid,
  .footer-bottom {
    width: min(100% - 32px, var(--container-width));
    padding-inline: 0;
  }

  .container,
  .container-narrow {
    margin-inline: auto;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-brand-col {
    grid-column: auto;
  }

  .footer-contact-list li {
    grid-template-columns: 56px 1fr;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }

  .card-grid > *,
  .card-grid > .span-6,
  .card-grid > .span-8 {
    grid-column: span 12;
  }

  .page-hero {
    padding: calc(var(--header-height) + 36px) 0 44px;
  }
}

/* ---------- 13. 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;
  }

  .skip-link {
    transition: none;
  }

  .data-card:hover,
  .btn-primary:hover,
  .btn-outline:hover,
  .back-to-top:hover {
    transform: none;
  }
}