/* ============================================================
   米博体育全站共享样式 /assets/site.css
   视觉语言：体育数据终端 / 斜向切割 / 扫描线 / 荧光信号
   ============================================================ */

:root {
  --primary-bg: #0B0E14;
  --secondary-bg: #131A24;
  --subtle-bg: #1C2733;
  --border: #263140;
  --accent-green: #00FF87;
  --accent-blue: #00C8FF;
  --accent-purple: #9A5CFF;
  --text-primary: #F2F7FA;
  --text-secondary: #9AA7B4;
  --success: #00E0A0;

  --font-display: "Anton", "Impact", "Noto Sans SC", "PingFang SC", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", Consolas, monospace;

  --max-width: 1200px;
  --max-width-wide: 1360px;
  --header-h: 72px;
  --header-h-mobile: 60px;
  --ease-out: 200ms ease-out;
  --ease-smooth: 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

@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;
  }
}

article, aside, details, figcaption, figure, footer, header, main, nav, section, summary { display: block; }

body {
  font-family: var(--font-body);
  background-color: var(--primary-bg);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg, video, canvas { max-width: 100%; display: block; }
ul[class], ol[class] { list-style: none; }
p { margin-block: 0 1em; }

h1, h2, h3, h4 {
  margin-block: 0 0.5em;
  font-family: var(--font-display);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: 0.01em;
}
h1 { font-size: clamp(34px, 4.6vw, 52px); line-height: 1.12; }
h2 { font-size: clamp(26px, 3vw, 34px); }
h3 { font-size: 20px; }

a { color: var(--accent-blue); text-decoration: none; transition: color var(--ease-out); }
a:hover { color: var(--accent-green); }

::selection { background: var(--accent-green); color: var(--primary-bg); }

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

#main-content { display: block; scroll-margin-top: calc(var(--header-h) + 16px); }

/* ---------- 容器与栅格 ---------- */
.mb-container { width: min(var(--max-width), calc(100% - 48px)); margin-inline: auto; }
.mb-container--wide { width: min(var(--max-width-wide), calc(100% - 48px)); margin-inline: auto; }

.mb-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.mb-col-3 { grid-column: span 3; }
.mb-col-4 { grid-column: span 4; }
.mb-col-6 { grid-column: span 6; }
.mb-col-8 { grid-column: span 8; }
.mb-col-12 { grid-column: span 12; }

@media (max-width: 960px) {
  .mb-col-3, .mb-col-4, .mb-col-6, .mb-col-8, .mb-col-12 { grid-column: span 12; }
  .mb-col-md-6 { grid-column: span 6; }
}
@media (max-width: 640px) {
  .mb-col-md-6 { grid-column: span 12; }
}

.mb-section { padding-block: 72px; }
@media (min-width: 768px) { .mb-section { padding-block: 104px; } }
.mb-section--alt { background: var(--secondary-bg); border-block: 1px solid var(--border); }
.mb-section--tight { padding-block: 48px; }

/* ---------- 章节标题 ---------- */
.mb-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent-green);
}
.mb-eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), transparent);
  transform: skewX(-30deg);
}
.mb-title { font-size: clamp(28px, 4vw, 44px); line-height: 1.14; font-weight: 900; }
.mb-lead { font-size: 18px; line-height: 1.7; color: var(--text-secondary); max-width: 640px; }

/* ---------- 按钮 ---------- */
.mb-btn {
  --btn-clip: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  background: var(--subtle-bg);
  color: var(--text-primary);
  border: 1px solid var(--border);
  clip-path: var(--btn-clip);
  cursor: pointer;
  transition: transform var(--ease-out), box-shadow var(--ease-out), background-color var(--ease-out), border-color var(--ease-out);
}
.mb-btn:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
  border-color: var(--accent-blue);
}
.mb-btn:active { transform: translateY(0); }

.mb-btn--primary {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: var(--primary-bg);
  box-shadow: 0 0 0 0 rgba(0, 255, 135, 0.4), 0 4px 20px rgba(0, 255, 135, 0.2);
  animation: mb-cta-pulse 3s ease-in-out infinite;
}
.mb-btn--primary:hover {
  color: var(--primary-bg);
  border-color: var(--accent-green);
  box-shadow: 0 0 0 8px rgba(0, 255, 135, 0), 0 6px 28px rgba(0, 255, 135, 0.4);
}
.mb-btn--ghost { background: transparent; border-color: var(--accent-blue); color: var(--accent-blue); }
.mb-btn--ghost:hover { background: rgba(0, 200, 255, 0.08); color: var(--accent-blue); border-color: var(--accent-blue); }
.mb-btn--sm { padding: 8px 16px; font-size: 12px; }

@keyframes mb-cta-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 135, 0.4), 0 4px 20px rgba(0, 255, 135, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(0, 255, 135, 0), 0 4px 28px rgba(0, 255, 135, 0.35); }
}
@media (prefers-reduced-motion: reduce) {
  .mb-btn--primary { animation: none; }
}

/* ---------- 卡片 ---------- */
.mb-card {
  position: relative;
  background: var(--secondary-bg);
  border: 1px solid var(--border);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform var(--ease-out), border-color var(--ease-out), box-shadow var(--ease-out);
}
.mb-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 255, 135, 0.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 0 24px rgba(0, 255, 135, 0.08);
}
.mb-card--glow { box-shadow: 0 0 0 1px rgba(0, 255, 135, 0.25), 0 0 20px rgba(0, 255, 135, 0.06); }
.mb-card--flat:hover { transform: none; box-shadow: none; border-color: var(--border); }
.mb-card__head {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.mb-card__body { padding: 24px; }
.mb-card__title { font-family: var(--font-display); font-size: 20px; font-weight: 900; margin: 0; }
.mb-card__text { font-size: 14px; line-height: 1.7; color: var(--text-secondary); }

/* ---------- 标签与数据 ---------- */
.mb-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green);
  background: rgba(0, 255, 135, 0.08);
  border: 1px solid rgba(0, 255, 135, 0.25);
}
.mb-tag--blue { color: var(--accent-blue); background: rgba(0, 200, 255, 0.08); border-color: rgba(0, 200, 255, 0.25); }
.mb-tag--purple { color: var(--accent-purple); background: rgba(154, 92, 255, 0.08); border-color: rgba(154, 92, 255, 0.3); }

.mb-data { display: grid; gap: 4px; }
.mb-data__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 700;
  line-height: 1;
  color: var(--accent-green);
  font-variant-numeric: tabular-nums;
}
.mb-data__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.mb-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-block: 32px;
  border: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.mb-divider::before,
.mb-divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}
.mb-divider::before {
  flex: 0 0 48px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transform: skewX(-20deg);
}

.mb-slash {
  display: inline-block;
  width: 4px;
  height: 22px;
  transform: skewX(-24deg);
  background: linear-gradient(var(--accent-green), var(--accent-purple));
}

/* ---------- 面包屑 ---------- */
.mb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
}
.mb-breadcrumb a { color: var(--text-secondary); }
.mb-breadcrumb a:hover { color: var(--accent-green); }
.mb-breadcrumb__sep { color: var(--accent-purple); }
.mb-breadcrumb [aria-current="page"] { color: var(--accent-green); }

/* ---------- 正文容器 ---------- */
.mb-prose { max-width: 720px; }
.mb-prose p { margin-bottom: 1.4em; }
.mb-prose h2, .mb-prose h3 { margin-top: 1.6em; }
.mb-prose ul { padding-left: 20px; margin-bottom: 1.4em; }
.mb-prose li { margin-block: 6px; }

/* ---------- 媒体与图片容器 ---------- */
.mb-media {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 100% at 90% 0%, rgba(0, 200, 255, 0.14), transparent 60%),
    repeating-linear-gradient(0deg, rgba(0, 255, 135, 0.05) 0 1px, transparent 1px 6px),
    var(--subtle-bg);
  border: 1px solid var(--border);
}
.mb-media::after {
  content: attr(data-media-label);
  position: absolute;
  inset: 0;
  z-index: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.32em;
  text-indent: 0.32em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.mb-media img,
.mb-media video {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.mb-media--16x9 { aspect-ratio: 16 / 9; }
.mb-media--4x3 { aspect-ratio: 4 / 3; }
.mb-media--1x1 { aspect-ratio: 1 / 1; }
.mb-media--hero { aspect-ratio: 16 / 10; }

/* ---------- 滚动显现 ---------- */
.mb-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--ease-smooth), transform var(--ease-smooth);
}
.mb-reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .mb-reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 无障碍 ---------- */
.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;
}
.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--accent-green);
  color: var(--primary-bg);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 900;
  transform: translateY(-200%);
  transition: transform var(--ease-out);
  box-shadow: 0 4px 24px rgba(0, 255, 135, 0.35);
}
.skip-link:focus-visible { transform: translateY(0); }

/* ---------- 阅读进度 ---------- */
.site-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  box-shadow: 0 0 12px rgba(0, 255, 135, 0.6);
  pointer-events: none;
}

/* ---------- 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 110;
  height: var(--header-h);
  background: rgba(11, 14, 20, 0.92);
  border-bottom: 1px solid var(--border);
  transition: background var(--ease-out), box-shadow var(--ease-out);
}
.site-header.is-scrolled {
  background: rgba(7, 9, 13, 0.97);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}
.site-header__inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-primary);
}
.site-brand:hover { color: var(--text-primary); }
.site-brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-blue) 100%);
  color: var(--primary-bg);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}
.site-brand__text { display: grid; gap: 1px; }
.site-brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.05em;
}
.site-brand__meta {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
.site-brand__meta::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 6px;
  background: var(--accent-green);
  animation: mb-blink 1.6s step-end infinite;
}
@keyframes mb-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}
@media (prefers-reduced-motion: reduce) {
  .site-brand__meta::before { animation: none; }
}

.site-nav { display: flex; align-items: center; }
.site-nav__list { display: flex; align-items: center; gap: 26px; list-style: none; }
.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 8px 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  white-space: nowrap;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--ease-out);
}
.site-nav__link:hover { color: var(--text-primary); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] { color: var(--accent-green); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); }
.site-nav__cta {
  margin-left: 24px;
  padding-left: 24px;
  border-left: 1px solid var(--border);
}

.site-nav__toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: border-color var(--ease-out), background-color var(--ease-out);
}
.site-nav__toggle:hover { border-color: var(--accent-green); background: rgba(0, 255, 135, 0.06); }
.site-nav__toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  transition: transform var(--ease-out), opacity var(--ease-out), background-color var(--ease-out);
}
.site-nav__toggle[aria-expanded="true"] .site-nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--accent-green);
}
.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);
  background: var(--accent-green);
}

/* ---------- 移动端底部抽屉导航 ---------- */
@media (max-width: 920px) {
  .site-header { height: var(--header-h-mobile); }
  .site-header__inner { height: var(--header-h-mobile); padding-inline: 16px; }
  .site-brand__meta { display: none; }
  .site-nav__toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 105;
    display: block;
    max-height: 74vh;
    overflow-y: auto;
    padding: 12px 20px calc(16px + env(safe-area-inset-bottom));
    background: rgba(19, 26, 36, 0.98);
    border-top: 1px solid var(--border);
    box-shadow: 0 -16px 48px rgba(0, 0, 0, 0.5);
    visibility: hidden;
    pointer-events: none;
    transform: translateY(102%);
    transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s linear 300ms;
  }
  .site-nav[data-open] {
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
    transition: transform 300ms cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s;
  }

  .site-nav__list { flex-direction: column; align-items: stretch; gap: 2px; }
  .site-nav__link { display: block; padding: 14px 8px; font-size: 16px; }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] {
    background: rgba(0, 255, 135, 0.06);
    color: var(--accent-green);
    border-left: 2px solid var(--accent-green);
    padding-left: 12px;
  }

  .site-nav__cta {
    margin: 12px 8px 0;
    padding: 16px 0 4px;
    border-left: 0;
    border-top: 1px solid var(--border);
  }
  .site-nav__cta .mb-btn { width: 100%; }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: 96px;
  background: var(--primary-bg);
  border-top: 1px solid var(--border);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-blue) 45%, var(--accent-purple) 100%);
}
.site-footer__main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 32px 40px;
  padding-block: 64px 48px;
}
.site-footer__brand { display: grid; gap: 4px; }
.site-footer__intro {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  max-width: 340px;
}
.site-footer__trust {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--accent-green);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.site-footer__col { display: flex; flex-direction: column; gap: 2px; }
.site-footer__heading {
  margin-bottom: 12px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.site-footer__heading::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent-green);
}
.site-footer__link {
  display: block;
  padding: 5px 0;
  color: var(--text-secondary);
  font-size: 14px;
  transition: color var(--ease-out), padding-left var(--ease-out);
}
.site-footer__link::before {
  content: "/";
  margin-right: 6px;
  color: var(--accent-purple);
}
.site-footer__link:hover { color: var(--accent-green); padding-left: 4px; }
.site-footer__link:hover::before { color: var(--accent-green); }

.site-footer__bar {
  background: var(--secondary-bg);
  border-top: 1px solid var(--border);
  padding: 18px 0;
}
.site-footer__bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}
.site-footer__bar-inner p { margin: 0; }

@media (max-width: 960px) {
  .site-footer__main { grid-template-columns: 1fr 1fr; gap: 32px; }
  .site-footer__brand { grid-column: span 2; }
}
@media (max-width: 600px) {
  .site-footer__main { grid-template-columns: 1fr; }
  .site-footer__brand { grid-column: span 1; }
}
@media (max-width: 640px) {
  .site-footer__bar-inner { flex-direction: column; align-items: flex-start; }
}