/* ==========================================
   冠竞体育汇 · 全站共享样式
   文件位置 /assets/site.css
   ========================================== */

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

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

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-mist);
  background: var(--color-deep);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

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

a {
  color: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: 0.02em;
}

:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 2px;
  border-radius: 4px;
}

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

#main-content {
  display: block;
  scroll-margin-top: var(--header-h);
}

main {
  min-height: 60vh;
}

/* ---------- CSS Variables ---------- */
:root {
  /* 色彩系统 */
  --color-deep: #0b3a2c;
  --color-grass: #0f4c3a;
  --color-grass-bright: #2e7d32;
  --color-gold: #ffc107;
  --color-red: #c62828;
  --color-blue: #00e5ff;
  --color-ink: #1a1a1a;
  --color-mist: #f5f5f5;
  --color-gray: #9e9e9e;

  /* 字体 */
  --font-title: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "PT Mono", monospace;

  /* 布局 */
  --header-h: 72px;
  --container-w: 1200px;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.18);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.25);
  --shadow-gold: 0 4px 20px rgba(255, 193, 7, 0.25);

  /* 动效 */
  --ease-base: 0.3s ease;
  --ease-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Container / Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  position: relative;
  padding: 96px 0;
}

.section--alt {
  background: var(--color-grass);
}

.section--light {
  background: var(--color-mist);
  color: var(--color-ink);
}

.section-header {
  margin-bottom: 48px;
  max-width: 680px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  color: inherit;
  margin-top: 8px;
}

.section--light .section-title {
  color: var(--color-ink);
}

.section-sub {
  margin-top: 12px;
  font-size: 15px;
  color: var(--color-gray);
  line-height: 1.8;
}

.section--light .section-sub {
  color: #666;
}

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: 24px;
}

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

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

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

/* ---------- Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -64px;
  left: 16px;
  z-index: 300;
  padding: 10px 22px;
  background: var(--color-gold);
  color: var(--color-ink);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 var(--radius-pill) var(--radius-pill);
  box-shadow: var(--shadow-lg);
  transition: top 0.25s ease;
}

.skip-link:focus {
  top: 0;
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: transparent;
  transition: background-color 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease;
}

.site-header.is-scrolled {
  background: rgba(11, 58, 44, 0.92);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-inner {
  height: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 800;
  color: var(--color-mist);
  text-decoration: none;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand-zh strong {
  color: var(--color-gold);
  font-weight: 800;
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  background: var(--color-gold);
  color: var(--color-ink);
  padding: 2px 8px;
  margin-left: 8px;
  border-radius: 4px;
  letter-spacing: 0.08em;
  vertical-align: middle;
}

/* Nav */
.site-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 600;
  color: rgba(245, 245, 245, 0.75);
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: var(--color-mist);
  background: rgba(255, 255, 255, 0.08);
}

.nav-link[aria-current="page"] {
  color: var(--color-gold);
  background: rgba(255, 193, 7, 0.1);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 3px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--color-gold);
  border-radius: 2px;
  transition: transform 0.2s ease;
}

.nav-link:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-link[aria-current="page"]::after {
  transform: translateX(-50%) scaleX(1);
  background: var(--color-blue);
}

.nav-index {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--color-blue);
  opacity: 0.85;
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-pill);
  padding: 10px;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--color-gold);
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-mist);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease, background 0.3s ease;
}

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

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

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

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: var(--color-deep);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-blue) 45%, var(--color-red) 100%);
  opacity: 0.6;
  z-index: 2;
}

/* 天山轮廓剪影 */
.site-footer::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(0, 0, 0, 0.14);
  clip-path: polygon(
    0 100%, 0 82%, 10% 55%, 22% 72%, 34% 28%,
    48% 64%, 58% 38%, 72% 78%, 84% 48%, 100% 74%, 100% 100%
  );
  pointer-events: none;
  z-index: 1;
}

.footer-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 2fr 1.2fr 1fr 2fr;
  gap: 48px;
  padding-top: 72px;
  padding-bottom: 56px;
}

/* Footer brand */
.footer-brand-name {
  font-family: var(--font-title);
  font-size: 26px;
  font-weight: 800;
  color: var(--color-mist);
}

.footer-brand-name strong {
  color: var(--color-gold);
}

.footer-tagline {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  margin-top: 6px;
}

.footer-trust {
  font-size: 13px;
  line-height: 1.85;
  color: var(--color-gray);
  margin-top: 18px;
  max-width: 360px;
}

.footer-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 6px 14px;
  background: rgba(46, 125, 50, 0.18);
  border: 1px solid rgba(255, 193, 7, 0.18);
  border-radius: var(--radius-pill);
}

.footer-status-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-gold);
}

/* Footer headings */
.footer-heading {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-mist);
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-heading::after {
  content: "";
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-gold);
  margin-top: 8px;
  border-radius: 2px;
}

/* Footer link list */
.footer-link-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(245, 245, 245, 0.7);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.footer-link-list a:hover {
  color: var(--color-gold);
  padding-left: 4px;
}

.footer-link-list a::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-blue);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.footer-link-list a:hover::before {
  opacity: 1;
}

/* Footer contact */
.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-contact-label {
  font-size: 11px;
  color: var(--color-gray);
  letter-spacing: 0.06em;
}

.footer-contact-value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(245, 245, 245, 0.8);
  line-height: 1.5;
  word-break: break-all;
}

/* Footer bottom */
.footer-bottom {
  position: relative;
  z-index: 2;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-gray);
}

.footer-code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--color-gray);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-gold);
}

.btn--outline {
  background: transparent;
  border-color: rgba(245, 245, 245, 0.5);
  color: var(--color-mist);
}

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

.btn--ghost {
  background: rgba(245, 245, 245, 0.1);
  color: var(--color-mist);
}

.btn--ghost:hover {
  background: rgba(245, 245, 245, 0.18);
}

.btn--red {
  background: var(--color-red);
  color: var(--color-mist);
}

.btn--red:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(198, 40, 40, 0.35);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  font-size: 13px;
  color: var(--color-gray);
}

.breadcrumb a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.breadcrumb li + li::before {
  content: "/";
  font-family: var(--font-mono);
  color: var(--color-gray);
  margin-right: 6px;
}

/* ---------- Index Label ---------- */
.index-label {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  text-transform: uppercase;
}

.index-label::before {
  content: "[";
  color: var(--color-blue);
  margin-right: 2px;
}

.index-label::after {
  content: "]";
  color: var(--color-blue);
  margin-left: 2px;
}

/* ---------- Status Dot ---------- */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
  flex-shrink: 0;
}

.status-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid var(--color-gold);
  animation: status-pulse 2s ease-out infinite;
}

@keyframes status-pulse {
  0% {
    transform: scale(0.6);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

.status-dot--blue {
  background: var(--color-blue);
}

.status-dot--blue::after {
  border-color: var(--color-blue);
}

.status-dot--red {
  background: var(--color-red);
}

.status-dot--red::after {
  border-color: var(--color-red);
}

/* ---------- Data Card ---------- */
.data-card {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.data-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 193, 7, 0.3);
  background: rgba(255, 255, 255, 0.07);
}

.data-card__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.data-card__value {
  font-family: var(--font-title);
  font-size: 36px;
  font-weight: 800;
  color: var(--color-mist);
  margin-top: 8px;
  line-height: 1.2;
}

.data-card__value--blue {
  color: var(--color-blue);
}

.data-card__value--gold {
  color: var(--color-gold);
}

.data-card__meta {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-gray);
}

/* ---------- Panel Stack ---------- */
.panel-stack {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.panel-stack::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 12px;
  bottom: -12px;
  background: rgba(255, 193, 7, 0.03);
  border-radius: var(--radius-xl);
  transform: rotate(1.2deg);
  pointer-events: none;
}

.panel-stack__item {
  position: relative;
  background: var(--color-grass);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-xl);
  padding: 40px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.panel-stack__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-gold), var(--color-blue) 60%, transparent);
  opacity: 0.5;
}

/* ---------- Image Frame ---------- */
.image-frame {
  position: relative;
  display: block;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(145deg, var(--color-grass-bright) 0%, var(--color-deep) 100%);
}

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

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

.image-frame--tall {
  aspect-ratio: 3 / 4;
}

.image-frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.image-frame:hover img {
  transform: scale(1.04);
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 35%, rgba(255, 255, 255, 0.05) 35%, rgba(255, 255, 255, 0.05) 37%, transparent 37%);
  pointer-events: none;
}

/* ---------- Page Hero ---------- */
.page-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: flex-end;
  padding-top: calc(var(--header-h) + 64px);
  padding-bottom: 64px;
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0,
      transparent 44px,
      rgba(255, 255, 255, 0.014) 44px,
      rgba(255, 255, 255, 0.014) 46px
    ),
    linear-gradient(135deg, var(--color-deep) 0%, var(--color-grass) 55%, var(--color-grass-bright) 100%);
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: rgba(46, 125, 50, 0.3);
  clip-path: polygon(18% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -8%;
  bottom: -25%;
  width: 55%;
  height: 65%;
  background: radial-gradient(ellipse at center, rgba(255, 193, 7, 0.09) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero-content {
  position: relative;
  z-index: 2;
}

.page-hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  color: var(--color-mist);
  max-width: 600px;
  line-height: 1.15;
}

.page-hero-sub {
  margin-top: 16px;
  font-size: 16px;
  color: rgba(245, 245, 245, 0.7);
  max-width: 480px;
  line-height: 1.8;
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-blue));
  z-index: 200;
  border-radius: 0 3px 3px 0;
  pointer-events: none;
}

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-gold);
  color: var(--color-ink);
  font-size: 18px;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 90;
  box-shadow: var(--shadow-gold);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease, background 0.2s ease;
}

.back-to-top:hover {
  background: #ffd54f;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- Reveal Animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 32px;
  }

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

@media (max-width: 960px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: min(340px, 88vw);
    height: calc(100vh - var(--header-h));
    background: rgba(11, 58, 44, 0.98);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    transform: translateX(105%);
    transition: transform 0.35s var(--ease-slow), box-shadow 0.3s ease;
    border-radius: var(--radius-xl) 0 0 var(--radius-xl);
    padding: 28px 24px;
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    box-shadow: -8px 0 40px rgba(0, 0, 0, 0.35);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
  }

  .nav-link::after {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .section {
    padding: 72px 0;
  }

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

  .panel-stack__item {
    padding: 28px 24px;
  }

  .page-hero {
    min-height: 55vh;
    padding-top: calc(var(--header-h) + 48px);
    padding-bottom: 48px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 56px;
    padding-bottom: 40px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    justify-content: center;
    text-align: center;
    gap: 4px;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .brand-zh {
    font-size: 19px;
  }

  .brand-badge {
    font-size: 9px;
    padding: 2px 6px;
    margin-left: 6px;
  }
}

/* ---------- 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;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .back-to-top {
    transition: none;
  }

  .status-dot::after {
    animation: none;
    opacity: 0;
  }
}