/* ==========================================================================
   微玩体育 · 全站共享样式
   路径：/assets/site.css
   说明：reset、CSS 变量、中文排版、页头页脚、通用按钮、面包屑、
        正文容器、栅格与基础组件。页面特色布局由页面专属 CSS 完成。
   ========================================================================== */

/* ---------- CSS 变量 ---------- */
:root {
  --color-ink: #0B1A2A;
  --color-ink-deep: #101820;
  --color-accent: #C6FF00;
  --color-accent-orange: #FF6D00;
  --color-text: #F0F5F9;
  --color-text-dim: #A0AAB5;
  --color-success: #6B8E63;
  --color-terra: #D27D56;
  --color-grid: rgba(255, 255, 255, 0.08);
  --color-grid-fade: rgba(255, 255, 255, 0.035);

  --font-head: 'Archivo', 'Impact', 'Arial Black', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', 'Arial', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --fs-hero: clamp(3rem, 8vw, 6rem);
  --fs-h2: clamp(2rem, 4vw, 3rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;

  --container-max: 1440px;
  --container-narrow: 960px;
  --nav-h: 72px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 40px;
  --space-6: 64px;
  --space-7: 96px;

  --shadow-hard: 3px 3px 0 #000;
  --border-w: 1px;
}

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

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

body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-ink);
  background-image:
    linear-gradient(var(--color-grid-fade) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid-fade) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

body::before,
body::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--color-grid);
  z-index: 40;
  pointer-events: none;
  opacity: 0.6;
}

body::before { left: 12px; }
body::after { right: 12px; }

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

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

button {
  cursor: pointer;
  border-radius: 0;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.2em;
}

p {
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-text);
}

code,
.mono {
  font-family: var(--font-mono);
}

::selection {
  background: var(--color-accent);
  color: #000;
}

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-ink);
}

::-webkit-scrollbar-thumb {
  background: var(--color-ink-deep);
  border: 1px solid var(--color-grid);
}

#main-content {
  display: block;
  position: relative;
  min-height: 60vh;
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  padding: 10px 20px;
  background: var(--color-accent);
  color: #000;
  font-weight: 700;
  font-size: 0.9rem;
  transform: translateY(-120%);
  transition: transform 0.2s ease-in-out;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 26, 42, 0.92);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-grid);
}

.site-header-inner {
  max-width: var(--container-max);
  height: var(--nav-h);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.site-brand {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  line-height: 1;
  color: var(--color-text);
}

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

.site-brand-name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}

.site-brand-accent {
  color: var(--color-accent);
}

.site-brand-sub {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--color-text-dim);
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 13px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-dim);
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.site-nav-link::before {
  content: attr(data-index);
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--color-accent-orange);
  vertical-align: 2px;
}

.site-nav-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
}

.site-nav-link[aria-current="page"] {
  color: var(--color-accent);
  border-color: var(--color-grid);
  background: rgba(198, 255, 0, 0.05);
}

.nav-cta {
  display: none;
}

.site-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  border-left: 1px solid var(--color-grid);
  padding-left: var(--space-3);
  margin-left: var(--space-2);
}

.header-subscribe {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  color: #000;
  font-weight: 700;
  font-size: 0.88rem;
  line-height: 1.2;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.header-subscribe:hover {
  color: #000;
  background: var(--color-accent);
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.site-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-grid);
}

.site-nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--color-accent);
  transition: transform 0.2s ease-in-out, opacity 0.2s ease-in-out;
}

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

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

.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header-scroll {
  position: absolute;
  left: 0;
  bottom: -2px;
  height: 2px;
  width: 100%;
  pointer-events: none;
  z-index: 2;
}

.header-scroll-bar {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--color-accent);
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--color-ink-deep);
  border-top: 1px solid var(--color-grid);
  margin-top: var(--space-7);
}

.site-footer-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4) var(--space-5);
  display: grid;
  grid-template-columns: 2.2fr 1fr 1fr 1.4fr;
  gap: var(--space-5);
}

.site-footer-logo {
  display: inline-flex;
  flex-direction: column;
  line-height: 1;
  margin-bottom: 16px;
}

.site-footer-logo:hover {
  color: var(--color-text);
}

.site-footer-logo-name {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.site-footer-logo-accent {
  color: var(--color-accent);
}

.site-footer-logo-sub {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--color-text-dim);
}

.site-footer-desc {
  max-width: 44ch;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.site-footer-trust {
  max-width: 52ch;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-grid);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-text-dim);
}

.site-footer-title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent-orange);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-grid);
}

.site-footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer-list a {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  border-bottom: 1px solid transparent;
}

.site-footer-list a:hover {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.site-footer-contact-item {
  margin-bottom: 14px;
}

.site-footer-contact-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-orange);
}

.site-footer-contact-item span:last-child {
  font-size: 0.88rem;
  color: var(--color-text);
  word-break: break-all;
}

.site-footer-bottom {
  border-top: 1px solid var(--color-grid);
}

.site-footer-bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer-copyright {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.site-footer-icp {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-text-dim);
}

.site-back-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 70;
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  background: var(--color-ink-deep);
  border: 1px solid var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  box-shadow: 2px 2px 0 #000;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, background-color 0.2s ease;
}

.site-back-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.site-back-top:hover {
  background: var(--color-accent);
  color: #000;
}

/* ---------- 容器 ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-max);
}

/* ---------- 章节与标题 ---------- */
.section {
  padding: var(--space-6) 0;
}

.section-sm {
  padding: var(--space-4) 0;
}

.section-lg {
  padding: var(--space-7) 0;
}

.section-header {
  margin-bottom: var(--space-5);
}

.section-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-orange);
}

.section-title {
  font-size: var(--fs-h2);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.section-desc {
  max-width: 60ch;
  margin-top: 12px;
  color: var(--color-text-dim);
}

.eyebrow {
  display: inline-block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent-orange);
}

.page-head {
  padding: var(--space-5) 0 var(--space-3);
  border-bottom: 1px solid var(--color-grid);
  margin-bottom: var(--space-5);
}

.page-title {
  font-size: var(--fs-h2);
  text-transform: uppercase;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.page-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  transition: box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.btn-primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #000;
}

.btn-primary:hover {
  color: #000;
  background: var(--color-accent);
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-grid);
  color: var(--color-text);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-orange {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: #000;
}

.btn-orange:hover {
  color: #000;
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.05rem;
}

/* ---------- 栅格与分屏 ---------- */
.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--space-4);
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: var(--space-5);
  align-items: start;
}

.split-reverse {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--space-5);
  align-items: start;
}

/* ---------- 内容卡 ---------- */
.card {
  background: var(--color-ink-deep);
  border: 1px solid var(--color-grid);
  padding: var(--space-4);
  box-shadow: var(--shadow-hard);
}

.card-flat {
  box-shadow: none;
}

.card-accent {
  border-top: 2px solid var(--color-accent);
}

.card-hover {
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card-hover:hover {
  transform: translate(-2px, -2px);
  border-color: var(--color-accent);
  box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.55);
}

.card-title {
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.card-meta {
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-dim);
}

.card-body {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-dim);
}

/* ---------- 数据组件 ---------- */
.data-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-grid);
  background: var(--color-ink-deep);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-grid);
  white-space: nowrap;
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-orange);
  background: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr {
  transition: background-color 0.15s ease;
}

.data-table tbody tr:hover {
  background: rgba(198, 255, 0, 0.04);
}

.data-table td {
  color: var(--color-text);
}

.num {
  font-family: var(--font-mono);
  color: var(--color-accent);
}

.dim {
  color: var(--color-text-dim);
}

.stat-wrap {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1;
  color: var(--color-accent);
}

.stat-value.orange {
  color: var(--color-accent-orange);
}

.stat-value.terra {
  color: var(--color-terra);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

/* ---------- 标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--color-grid);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
}

.badge-green {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #000;
}

.badge-orange {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: #000;
}

.badge-terra {
  background: var(--color-terra);
  border-color: var(--color-terra);
  color: #000;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  margin: 0;
  padding: 16px 0;
  list-style: none;
}

.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--color-text-dim);
}

.breadcrumb li + li::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--color-text-dim);
  opacity: 0.5;
}

.breadcrumb a {
  color: var(--color-text-dim);
}

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

/* ---------- 图片容器 ---------- */
.img-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-ink-deep);
  border: 1px solid var(--color-grid);
}

.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.06);
}

.img-frame::after {
  content: attr(data-caption);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  background: rgba(16, 24, 32, 0.88);
  border-top: 1px solid var(--color-grid);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--color-text-dim);
}

/* ---------- 倾斜装饰 ---------- */
.tilt {
  transform: rotate(-1.2deg);
}

.tilt-strong {
  transform: rotate(-2.5deg);
}

/* ---------- 页签 ---------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-grid);
}

.tab-btn {
  padding: 10px 18px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-dim);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.tab-btn:hover {
  color: var(--color-text);
}

.tab-btn[aria-selected="true"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

[data-tab-panel] {
  display: none;
}

[data-tab-panel][data-active="true"] {
  display: block;
}

/* ---------- 手风琴 ---------- */
.acc-item {
  margin-bottom: 10px;
  background: var(--color-ink-deep);
  border: 1px solid var(--color-grid);
}

.acc-header {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  background: transparent;
  border: none;
  text-align: left;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
}

.acc-header::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  color: var(--color-accent);
  transition: transform 0.2s ease-in-out;
}

.acc-item[data-open="true"] > .acc-header::after {
  transform: rotate(45deg);
}

[data-acc-panel] {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease-in-out;
}

.acc-item[data-open="true"] > [data-acc-panel] {
  max-height: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  :root {
    --nav-h: 64px;
  }

  body::before,
  body::after {
    display: none;
  }

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

  .header-subscribe {
    display: none;
  }

  .site-nav {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 49;
    display: block;
    background: var(--color-ink-deep);
    border-bottom: 1px solid var(--color-grid);
    transform: translateY(-120%);
    visibility: hidden;
    opacity: 0;
    transition: transform 0.2s ease-in-out, opacity 0.2s ease-in-out, visibility 0.2s ease-in-out;
  }

  .site-nav[data-open="true"] {
    transform: translateY(0);
    visibility: visible;
    opacity: 1;
  }

  .site-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 0;
  }

  .site-nav-link {
    display: block;
    border: none;
    border-bottom: 1px solid var(--color-grid);
    border-left: 3px solid transparent;
    border-radius: 0;
    padding: 14px 20px;
    font-size: 1rem;
  }

  .site-nav-link[aria-current="page"] {
    border-left-color: var(--color-accent);
  }

  .nav-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 16px 20px;
    padding: 12px 20px;
    background: var(--color-accent);
    border: 1px solid var(--color-accent);
    color: #000;
    font-weight: 700;
  }

  .nav-cta:hover {
    color: #000;
    box-shadow: var(--shadow-hard);
    transform: translate(-2px, -2px);
  }

  .split,
  .split-reverse {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5) var(--space-4);
  }
}

@media (max-width: 640px) {
  .site-header-inner {
    padding: 0 var(--space-3);
  }

  .container {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }

  .site-brand-sub {
    font-size: 0.55rem;
  }

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

  .site-footer-grid {
    grid-template-columns: 1fr;
  }

  .site-footer-bottom-inner {
    justify-content: center;
    text-align: center;
  }

  .tilt,
  .tilt-strong {
    transform: none;
  }
}

/* ---------- 减弱动态 ---------- */
@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;
  }
}