/* ==========================================================================
   云开APP / assets/site.css
   共享样式：Reset · 变量 · 排版 · 头部 · 页脚 · 通用组件
   ========================================================================== */

/* ---------- 1. Reset 与变量 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

ul,
ol {
  list-style: none;
}

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

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

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

:root {
  --bg-primary: #0B1D3A;
  --bg-secondary: #1A3A5C;
  --bg-card: rgba(26, 58, 92, 0.65);
  --bg-light: #F5F7FA;
  --bg-dark: #1A1A2E;

  --accent-blue: #00E5FF;
  --accent-green: #39FF14;
  --accent-orange: #FF6B00;
  --accent-purple: #9D00FF;

  --text-primary: #E8EDF5;
  --text-secondary: rgba(232, 237, 245, 0.68);
  --text-muted: rgba(183, 199, 224, 0.52);

  --font-heading: 'Space Grotesk', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Roboto Mono', 'SF Mono', 'Consolas', monospace;

  --container-width: 1200px;
  --radius-sm: 2px;
  --radius-md: 8px;
  --radius-pill: 999px;

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --shadow-glow-blue: 0 0 20px rgba(0, 229, 255, 0.25);
  --shadow-glow-green: 0 0 20px rgba(57, 255, 20, 0.22);
}

/* ---------- 2. 基础排版 ---------- */
body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.5rem, 7vw, 4.5rem); }
h2 { font-size: clamp(2rem, 5vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p + p {
  margin-top: 1rem;
}

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

strong {
  color: var(--text-primary);
  font-weight: 600;
}

::selection {
  background: rgba(0, 229, 255, 0.25);
  color: var(--text-primary);
}

#main-content {
  min-height: 60vh;
}

/* ---------- 3. 辅助功能 ---------- */
.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: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.75rem 1.5rem;
  background: var(--accent-blue);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-250%);
  transition: transform 0.2s ease;
}

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

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

/* ---------- 4. 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  left: 0;
  bottom: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
  z-index: 1000;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.55);
  pointer-events: none;
}

/* ---------- 5. 容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section__head {
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
  position: relative;
}

.section__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.section__lead {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
}

.section__head::after {
  content: '';
  display: block;
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-blue), transparent);
  margin-top: 1rem;
}

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

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

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

@media (max-width: 960px) {
  .grid--2,
  .grid--3 {
    grid-template-columns: 1fr;
  }
}

/* ---------- 6. 通用组件 ---------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 1rem;
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.btn--primary {
  background: var(--accent-orange);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 107, 0, 0.22);
}

.btn--primary:hover {
  background: #e85f00;
  box-shadow: 0 6px 30px rgba(255, 107, 0, 0.38);
  transform: translateY(-2px);
}

.btn--outline {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(0, 229, 255, 0.08);
  box-shadow: var(--shadow-glow-blue);
}

.btn--ghost {
  border-color: rgba(232, 237, 245, 0.25);
  color: var(--text-primary);
  background: transparent;
}

.btn--ghost:hover {
  border-color: rgba(232, 237, 245, 0.55);
  background: rgba(232, 237, 245, 0.05);
}

.breadcrumbs {
  padding: 1.25rem 0;
  font-size: 0.8125rem;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

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

.breadcrumbs__item + .breadcrumbs__item::before {
  content: '/';
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.breadcrumbs__link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumbs__link:hover {
  color: var(--accent-blue);
}

.breadcrumbs__current {
  color: var(--text-primary);
}

.card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid rgba(0, 229, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
  transition: height var(--transition-base);
}

.card:hover,
.card:focus-within {
  border-color: rgba(0, 229, 255, 0.34);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.22);
  transform: translateY(-4px);
}

.card:hover::before,
.card:focus-within::before {
  height: 100%;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.card__content {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid rgba(0, 229, 255, 0.12);
}

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

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

.media-frame--portrait {
  aspect-ratio: 3 / 4;
}

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

.media-frame__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 200px;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 70%, var(--accent-purple) 180%);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.stat {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  line-height: 1.1;
  color: var(--accent-green);
  letter-spacing: -0.02em;
  text-shadow: var(--shadow-glow-green);
}

.stat--lg {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
}

.stat__label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  text-shadow: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border: 1px solid rgba(0, 229, 255, 0.25);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(0, 229, 255, 0.06);
}

.glow-line {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-blue) 40%, var(--accent-purple) 100%);
  margin: 2.5rem 0;
}

.callout {
  position: relative;
  border-left: 3px solid var(--accent-blue);
  background: rgba(0, 229, 255, 0.045);
  padding: 1.25rem 1.5rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.toc {
  border: 1px solid rgba(0, 229, 255, 0.15);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  background: rgba(26, 58, 92, 0.4);
}

.toc__title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-blue);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.toc__list {
  display: grid;
  gap: 0.5rem;
}

.toc__list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

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

/* ---------- 7. 头部 ---------- */
.site-header {
  position: sticky;
  top: max(0.5rem, env(safe-area-inset-top));
  z-index: 100;
  padding-inline: 1rem;
  pointer-events: none;
}

.site-header__inner {
  position: relative;
  max-width: 1280px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  background: rgba(11, 29, 58, 0.92);
  border: 1px solid rgba(0, 229, 255, 0.22);
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.45), 0 0 24px rgba(0, 229, 255, 0.05);
  pointer-events: auto;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.site-header__inner:hover {
  box-shadow: 0 10px 44px rgba(0, 0, 0, 0.5), 0 0 32px rgba(0, 229, 255, 0.08);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-brand__logo {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px 10px 10px 2px;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 140%);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1;
  box-shadow: var(--shadow-glow-blue);
}

.site-brand__meta {
  display: flex;
  flex-direction: column;
}

.site-brand__name {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.site-brand__subtitle {
  display: block;
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-top: 0.1rem;
  white-space: nowrap;
}

/* ---------- 8. 导航 ---------- */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.125rem;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.site-nav__link:hover {
  color: var(--accent-blue);
  background: rgba(0, 229, 255, 0.08);
}

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

.site-nav__link[aria-current="page"] {
  color: var(--bg-primary);
  background: var(--accent-blue);
  font-weight: 700;
  box-shadow: 0 0 18px rgba(0, 229, 255, 0.35);
}

.site-nav__link[aria-current="page"]:hover {
  color: var(--bg-primary);
  background: var(--accent-blue);
}

/* ---------- 9. LIVE 指示器与导航按钮 ---------- */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(57, 255, 20, 0.28);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  background: rgba(57, 255, 20, 0.05);
  flex-shrink: 0;
}

.live-indicator__dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: live-blink 1.2s ease-in-out infinite;
}

@keyframes live-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.nav-toggle {
  display: none;
}

@media (max-width: 960px) {
  .live-indicator {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(0, 229, 255, 0.3);
    background: rgba(0, 229, 255, 0.05);
    flex-shrink: 0;
    transition: background var(--transition-fast), border-color var(--transition-fast);
  }

  .nav-toggle:hover {
    background: rgba(0, 229, 255, 0.12);
    border-color: rgba(0, 229, 255, 0.5);
  }

  .nav-toggle[aria-expanded="true"] {
    background: rgba(0, 229, 255, 0.14);
    border-color: var(--accent-blue);
  }

  .nav-toggle__box {
    position: relative;
    width: 18px;
    height: 14px;
    display: block;
  }

  .nav-toggle__bar {
    position: absolute;
    left: 0;
    width: 18px;
    height: 2px;
    background: var(--accent-blue);
    border-radius: 2px;
    transition: top 0.25s ease, transform 0.25s ease, opacity 0.25s ease;
  }

  .nav-toggle__bar:nth-child(1) { top: 0; }
  .nav-toggle__bar:nth-child(2) { top: 6px; }
  .nav-toggle__bar:nth-child(3) { top: 12px; }

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

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

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

/* ---------- 10. 移动端导航面板 ---------- */
@media (max-width: 960px) {
  .site-header__inner {
    border-radius: 24px;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.6rem);
    left: 0;
    right: 0;
    flex: none;
    justify-content: stretch;
    background: rgba(11, 29, 58, 0.97);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-radius: 16px;
    padding: 0.75rem;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  }

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

  .site-nav__list {
    flex-direction: column;
    gap: 0.25rem;
  }

  .site-nav__link {
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    font-size: 1rem;
    white-space: normal;
  }

  .site-nav__link[aria-current="page"] {
    box-shadow: none;
  }
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 4rem;
  background-color: var(--bg-primary);
  background-image:
    linear-gradient(rgba(0, 229, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 229, 255, 0.025) 1px, transparent 1px);
  background-size: 40px 40px;
  border-top: 1px solid rgba(0, 229, 255, 0.15);
  color: var(--text-secondary);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent-blue) 22%, var(--accent-purple) 50%, var(--accent-blue) 78%, transparent 100%);
  opacity: 0.55;
}

.site-footer::after {
  content: 'DATA·STREAM';
  position: absolute;
  right: 1.5rem;
  bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.22em;
  color: rgba(0, 229, 255, 0.12);
  pointer-events: none;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
  gap: 3rem;
  padding: 4rem 0 3rem;
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  margin-bottom: 1.25rem;
}

.site-footer__brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.3rem 0.6rem;
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-purple) 150%);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: 4px 4px 4px 0;
  box-shadow: var(--shadow-glow-blue);
}

.site-footer__brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.375rem;
  color: var(--text-primary);
  line-height: 1.2;
}

.site-footer__tagline {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  max-width: 30em;
}

.site-footer__note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  padding-top: 1rem;
  border-top: 1px solid rgba(128, 160, 200, 0.14);
}

.site-footer__heading {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-blue);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  position: relative;
}

.site-footer__heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 2px;
  background: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.site-footer__links li {
  margin-bottom: 0.55rem;
}

.site-footer__links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.site-footer__links a:hover {
  color: var(--accent-blue);
  padding-left: 0.25rem;
}

.site-footer__contact-list {
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--text-secondary);
}

.site-footer__support {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: 1rem;
  line-height: 1.6;
  font-style: italic;
  max-width: 26em;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  border-top: 1px solid rgba(128, 160, 200, 0.14);
  padding: 1.25rem 0;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.site-footer__bottom p {
  margin: 0;
}

/* ---------- 12. 显现动画 ---------- */
.js-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.js-reveal [data-reveal][data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 13. 动效降级与焦点 ---------- */
@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;
  }

  .live-indicator__dot {
    animation: none;
    opacity: 1;
  }

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

/* ---------- 14. 响应式收尾 ---------- */
@media (max-width: 1024px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 640px) {
  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0 2rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-header__inner {
    border-radius: 20px;
    padding: 0.4rem 0.4rem 0.4rem 0.75rem;
  }
}