/* ============ 欧易体育 Site Kit 共享样式 ============ */
/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; }
img { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { color: inherit; }

/* CSS Variables */
:root {
  --color-bg: #0B1026;
  --color-bg-deep: #060917;
  --color-card: #121A3A;
  --color-card-hover: #16204A;
  --color-accent: #00FF9C;
  --color-accent-2: #FF5A36;
  --color-text: #FFFFFF;
  --color-text-dim: #A0B0D0;
  --color-border: #4A5A8A;
  --color-warning: #FFC107;
  --color-purple: #7B68EE;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-heading: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-data: ui-monospace, SF Mono, "Cascadia Code", "Roboto Mono", Consolas, monospace;
  --container-max: 1200px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --radius: 6px;
  --header-h: 72px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(900px 420px at 85% -50px, rgba(123, 104, 238, 0.14), transparent 70%),
    radial-gradient(700px 500px at -10% 115%, rgba(0, 255, 156, 0.055), transparent 70%);
  min-height: 100vh;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-white);
}
h1 { font-size: clamp(2.5rem, 6vw, 4rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); letter-spacing: -0.02em; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.0625rem; }

::selection { background: var(--color-accent); color: var(--color-bg); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
@media (min-width: 768px) {
  .container { padding-inline: var(--space-8); }
}

.content-container {
  max-width: 760px;
  margin-inline: auto;
  padding: var(--space-12) var(--space-6) var(--space-24);
}
.content-container a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 4px;
}
.content-container a:hover { color: var(--color-white); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
  padding: 0.875rem 1.75rem;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-card);
  border: none;
  cursor: pointer;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background 0.2s ease, color 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}
.btn:hover { filter: brightness(1.18); color: var(--color-white); }
.btn:active { filter: brightness(0.92); }
.btn-accent { background: var(--color-accent); color: var(--color-bg); }
.btn-accent:hover { background: var(--color-accent); color: var(--color-bg); filter: brightness(0.9); }
.btn-outline { background: transparent; color: var(--color-text-dim); box-shadow: inset 0 0 0 1.5px var(--color-border); }
.btn-outline:hover { color: var(--color-accent); box-shadow: inset 0 0 0 1.5px var(--color-accent); }

/* Skip Link */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 3000;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  text-decoration: none;
  border-radius: 0 0 6px 6px;
  transition: top 0.2s ease;
}
.skip-link:focus-visible { top: 0; }

/* Scroll Progress */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-accent), var(--color-purple), var(--color-accent-2));
  z-index: 2000;
  pointer-events: none;
  box-shadow: 0 0 12px rgba(0, 255, 156, 0.45);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 16, 38, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(74, 90, 138, 0.35);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  height: var(--header-h);
  position: relative;
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-white);
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.25rem;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}
.brand-text {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: 0.02em;
  line-height: 1.2;
}
.brand-suffix {
  font-family: var(--font-data);
  font-size: 0.5625rem;
  font-weight: 400;
  color: var(--color-accent);
  margin-left: 0.125rem;
  letter-spacing: 0.08em;
  vertical-align: 0.25em;
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}
.nav-toggle:hover .nav-toggle-line { background: var(--color-accent); }
.nav-toggle-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: transform 0.25s ease, background 0.2s ease, opacity 0.25s 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); }

/* Nav */
.site-nav { display: flex; align-items: center; margin-left: auto; }
.nav-list { display: flex; align-items: center; gap: 1.5rem; list-style: none; }
.nav-item { position: relative; }
.nav-link {
  display: inline-block;
  color: var(--color-text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.5rem 0.125rem;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-link:hover { color: var(--color-white); }
.nav-link[aria-current="page"] {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Header CTA */
.header-cta {
  margin-left: var(--space-4);
  flex-shrink: 0;
  padding: 0.6875rem 1.375rem;
  font-size: 0.875rem;
}

/* Footer */
.site-footer {
  background: var(--color-bg-deep);
  border-top: 1px solid rgba(74, 90, 138, 0.3);
  padding: var(--space-16) 0 var(--space-8);
  color: var(--color-text-dim);
  font-size: 0.9375rem;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 320px;
  max-width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
.footer-brand-block { min-width: 0; }
.brand-footer .brand-text { font-size: 1.375rem; }
.brand-footer .brand-mark { width: 44px; height: 44px; font-size: 1.375rem; }
.footer-about {
  margin-top: var(--space-4);
  max-width: 300px;
  line-height: 1.8;
  color: var(--color-text-dim);
}
.footer-trust {
  margin-top: var(--space-4);
  padding: 0.625rem 0.875rem;
  background: rgba(0, 255, 156, 0.08);
  border-left: 2px solid var(--color-accent);
  color: var(--color-text);
  font-size: 0.8125rem;
  line-height: 1.6;
  max-width: 340px;
}
.footer-links-group { min-width: 0; }
.footer-title {
  font-size: 0.8125rem;
  font-family: var(--font-data);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}
.footer-title::after {
  content: "/";
  color: var(--color-accent);
  margin-left: 0.25rem;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--color-text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-links a::before {
  content: "→";
  color: var(--color-accent);
  font-family: var(--font-data);
  font-size: 0.875rem;
  transition: transform 0.2s ease;
}
.footer-links a:hover { color: var(--color-white); }
.footer-links a:hover::before { transform: translateX(3px); }
.footer-contact-group { min-width: 0; }
.contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact-list li { padding-left: 0.875rem; border-left: 2px solid rgba(0, 255, 156, 0.22); }
.contact-list li:hover { border-left-color: var(--color-accent); }
.contact-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
  letter-spacing: 0.04em;
  margin-bottom: 0.125rem;
}
.contact-text { color: var(--color-text); font-size: 0.9375rem; word-break: break-all; }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-4);
  border-top: 1px solid rgba(74, 90, 138, 0.25);
  padding-top: var(--space-6);
  font-size: 0.875rem;
}
.footer-copy { color: var(--color-text-dim); }
.footer-icp { color: var(--color-text-dim); font-family: var(--font-data); }

/* Section Utilities */
.section-eyebrow {
  display: block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}
.section-title { display: flex; align-items: center; gap: 0.625rem; margin-bottom: var(--space-4); }
.section-title::before {
  content: "";
  width: 28px;
  height: 4px;
  background: var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 70% 100%, 0 100%);
  flex-shrink: 0;
}
.section-desc {
  color: var(--color-text-dim);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 640px;
  margin-top: var(--space-2);
}

/* Data Card & Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}
.data-card {
  background: var(--color-card);
  border: 1px solid rgba(74, 90, 138, 0.45);
  padding: var(--space-6);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}
.data-card:hover {
  border-color: var(--color-accent);
  background: var(--color-card-hover);
  transform: translateY(-2px);
}
.data-value {
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--color-accent);
  font-size: 1.5rem;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0;
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-8);
  font-size: 0.875rem;
  color: var(--color-text-dim);
}
.breadcrumb li { display: flex; align-items: center; }
.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--color-border);
  margin: 0 0.5rem;
}
.breadcrumb a { color: var(--color-text-dim); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb [aria-current="page"] { color: var(--color-white); }

/* Utility */
.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;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle { display: inline-flex; margin-left: auto; }
  .header-cta { display: none; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    margin-left: 0;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    background: linear-gradient(180deg, rgba(18, 26, 58, 0.98), rgba(11, 16, 38, 0.98));
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--color-border);
    transition: max-height 0.35s ease, opacity 0.25s ease, visibility 0.35s ease, transform 0.3s ease;
  }
  .site-nav[data-open] {
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }
  .site-nav .nav-list {
    flex-direction: column;
    gap: 0;
    padding: var(--space-4);
  }
  .site-nav .nav-link {
    display: block;
    padding: 0.875rem var(--space-4);
    border-bottom: 1px solid rgba(74, 90, 138, 0.2);
    border-left: 2px solid transparent;
    font-size: 1rem;
    border-radius: 0;
  }
  .site-nav .nav-link:hover { background: rgba(0, 255, 156, 0.05); }
  .site-nav .nav-link[aria-current="page"] {
    border-left-color: var(--color-accent);
    color: var(--color-accent);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .footer-bottom { justify-content: flex-start; }
  .site-footer { padding-top: var(--space-12); }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .nav-list { gap: 1rem; }
  .header-inner { gap: var(--space-4); }
  .header-cta { margin-left: var(--space-2); padding-left: 1rem; padding-right: 1rem; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1.5fr; }
}

/* 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;
    transition-delay: 0s !important;
  }
}