/* ==========================================================
   必赢门户 / Site Kit 共享样式
   框架式导航 · 数据叙事 · 赛事指挥中心
   ========================================================== */

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

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

body {
  background: #020B16;
  color: #E8F0FF;
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Saira", "Arial Narrow", "Microsoft YaHei", sans-serif;
  font-weight: 650;
  line-height: 1.2;
  color: #E8F0FF;
}

/* ---------- 2. CSS Variables ---------- */
:root {
  /* 品牌色板 */
  --deep-space-blue: #020B16;
  --panel-blue: #0A1C2F;
  --line-blue: #1A3F66;
  --electric-green: #4CF200;
  --signal-orange: #FF6A00;
  --ink-white: #E8F0FF;
  --mist-blue: #8FA8C8;
  --divider: rgba(255, 255, 255, 0.12);
  --glow-green: rgba(0, 255, 160, 0.35);
  --layer-blue: #072033;

  /* 字体 */
  --font-display: "Saira", "DIN Alternate", Bahnschrift, "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", monospace;

  /* 尺寸 */
  --content-max: 1200px;
  --header-h: 72px;
  --topbar-h: 36px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  /* 阴影与光效 */
  --shadow-panel: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 20px var(--glow-green);
  --progress: 0%;
}

/* ---------- 3. 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--electric-green);
  outline-offset: 2px;
  box-shadow: 0 0 0 6px rgba(76, 242, 0, 0.15);
  border-radius: 2px;
}

/* ---------- 4. 辅助隐藏 ---------- */
.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;
}

/* ---------- 5. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--electric-green);
  color: var(--deep-space-blue);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  box-shadow: 0 4px 20px rgba(76, 242, 0, 0.3);
  transition: top 0.25s ease;
}

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

/* ---------- 6. 滚动进度条 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  z-index: 1200;
  pointer-events: none;
  background: transparent;
}

.scroll-progress::after {
  content: "";
  display: block;
  height: 100%;
  width: var(--progress, 0%);
  background: linear-gradient(90deg, var(--electric-green) 0%, #00D4AA 60%, var(--signal-orange) 100%);
  box-shadow: 0 0 12px var(--glow-green);
  transition: width 0.08s ease-out;
}

/* ---------- 7. Topbar 公告栏 ---------- */
.topbar {
  background: var(--panel-blue);
  border-bottom: 1px solid var(--divider);
  height: var(--topbar-h);
}

.topbar__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar__live {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

.topbar__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--electric-green);
  box-shadow: 0 0 10px var(--glow-green);
  animation: live-pulse 2s ease-in-out infinite;
}

@keyframes live-pulse {
  0%,
  100% {
    opacity: 1;
    box-shadow: 0 0 10px var(--glow-green);
  }
  50% {
    opacity: 0.55;
    box-shadow: 0 0 2px rgba(76, 242, 0, 0.2);
  }
}

.topbar__live-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--electric-green);
  text-transform: uppercase;
}

.topbar__message {
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--mist-blue);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar__code {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--line-blue);
  flex-shrink: 0;
}

/* ---------- 8. Header 主栏 ---------- */
.header-main {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(2, 11, 22, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--divider);
}

.header-main::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--electric-green) 0%, var(--line-blue) 35%, transparent 100%);
  pointer-events: none;
}

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

/* ---------- 9. 品牌标识 ---------- */
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
}

.brand__logo {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ink-white);
  line-height: 1;
  transition: color 0.2s ease;
}

.brand__suffix {
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--electric-green);
  border: 1px solid rgba(76, 242, 0, 0.35);
  border-radius: 2px;
  padding: 1px 6px 0;
  line-height: 1.6;
}

.brand:hover .brand__logo {
  color: var(--electric-green);
}

/* ---------- 10. 移动端汉堡按钮 ---------- */
.nav-toggle {
  display: none;
  position: relative;
  z-index: 700;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 11px;
  border: 1px solid var(--divider);
  border-radius: var(--radius-sm);
  background: var(--panel-blue);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--electric-green);
  background: rgba(76, 242, 0, 0.06);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--ink-white);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

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

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

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

/* ---------- 11. 主导航 ---------- */
.main-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav__link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 8px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mist-blue);
  text-decoration: none;
  position: relative;
  transition: color 0.2s ease;
}

.main-nav__link::before {
  content: attr(data-index);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.1em;
  line-height: 1;
  color: var(--signal-orange);
  opacity: 0.75;
  margin-bottom: 4px;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.main-nav__link::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 3px;
  height: 2px;
  background: linear-gradient(90deg, var(--electric-green), transparent 80%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

.main-nav__link:hover,
.main-nav__link:focus-visible {
  color: var(--ink-white);
}

.main-nav__link:hover::after,
.main-nav__link:focus-visible::after {
  transform: scaleX(1);
}

.main-nav__link[aria-current="page"] {
  color: var(--electric-green);
}

.main-nav__link[aria-current="page"]::before {
  color: var(--electric-green);
  opacity: 1;
}

.main-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

/* ---------- 12. 页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--deep-space-blue);
  border-top: 1px solid var(--divider);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 160px;
  height: 3px;
  background: linear-gradient(90deg, var(--electric-green), var(--signal-orange));
  box-shadow: 0 0 14px var(--glow-green);
  border-radius: 0 3px 3px 0;
}

.footer-main {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 64px 24px 40px;
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 48px;
}

.footer-brand__logo {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--ink-white);
  line-height: 1;
  margin-bottom: 10px;
}

.footer-brand__suffix {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--electric-green);
  border: 1px solid rgba(76, 242, 0, 0.35);
  border-radius: 3px;
  padding: 2px 8px;
  margin-left: 6px;
  vertical-align: middle;
}

.footer-brand__desc {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--ink-white);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.footer-brand__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist-blue);
}

.footer-cols {
  display: contents;
}

.footer-col__title {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-white);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--divider);
  position: relative;
}

.footer-col__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 28px;
  height: 2px;
  background: var(--electric-green);
  opacity: 0.7;
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col__link {
  font-size: 14px;
  color: var(--mist-blue);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
  position: relative;
}

.footer-col__link:hover,
.footer-col__link:focus-visible {
  color: var(--electric-green);
  padding-left: 4px;
}

.footer-trust {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px 28px;
  border-top: 1px solid var(--divider);
  padding-top: 24px;
  position: relative;
}

.footer-trust__text {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-blue);
  max-width: 860px;
  padding-left: 16px;
  border-left: 2px solid var(--electric-green);
  opacity: 0.85;
}

.footer-bottom {
  background: var(--panel-blue);
  border-top: 1px solid var(--divider);
  padding: 18px 24px;
}

.footer-bottom p {
  max-width: var(--content-max);
  margin: 0 auto;
  font-size: 12px;
  color: var(--mist-blue);
  line-height: 1.6;
  text-align: center;
}

.footer-bottom__icp {
  margin-bottom: 2px;
}

/* ---------- 13. 主内容容器 ---------- */
.page-main {
  min-height: 60vh;
  background: var(--deep-space-blue);
}

.page-main:focus {
  outline: none;
}

.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 14. 章节 ---------- */
.section {
  padding: 80px 0;
}

.section--alt {
  background: var(--layer-blue);
}

/* ---------- 15. 十二列网格 ---------- */
.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

/* ---------- 16. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn--primary {
  background: var(--electric-green);
  color: var(--deep-space-blue);
  font-weight: 700;
  box-shadow: 0 2px 12px rgba(76, 242, 0, 0.15);
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #63FF14;
  box-shadow: 0 0 20px var(--glow-green);
  transform: translateY(-1px);
  color: var(--deep-space-blue);
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-blue);
  color: var(--ink-white);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--electric-green);
  color: var(--electric-green);
  box-shadow: 0 0 16px rgba(76, 242, 0, 0.08);
}

/* ---------- 17. 面包屑 ---------- */
.breadcrumbs {
  padding: 16px 0;
}

.breadcrumbs__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumbs__link {
  font-size: 13px;
  color: var(--mist-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.breadcrumbs__link:hover,
.breadcrumbs__link:focus-visible {
  color: var(--electric-green);
}

.breadcrumbs__sep {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--line-blue);
}

.breadcrumbs__current {
  font-size: 13px;
  color: var(--ink-white);
}

/* ---------- 18. 内页页头 ---------- */
.page-header {
  padding: 32px 0 40px;
}

.page-header__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink-white);
  margin-top: 8px;
}

.page-header__title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--electric-green), var(--signal-orange));
  margin-top: 12px;
  border-radius: 2px;
}

.page-header__desc {
  font-size: 15px;
  color: var(--mist-blue);
  margin-top: 12px;
  max-width: 640px;
  line-height: 1.7;
}

/* ---------- 19. 章节标签 ---------- */
.section-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.section-label__index {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 400;
  color: var(--signal-orange);
  line-height: 1;
}

.section-label__text {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist-blue);
}

.section-label::after {
  content: "";
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: linear-gradient(90deg, var(--line-blue), transparent);
}

/* ---------- 20. 斜切分割线 ---------- */
.diagonal-divider {
  height: 4px;
  background: linear-gradient(100deg, var(--electric-green) 0%, transparent 45%, var(--line-blue) 65%, var(--signal-orange) 100%);
  transform: skewX(-12deg);
  border: none;
  opacity: 0.8;
  margin: 0;
}

/* ---------- 21. 图片容器 ---------- */
.image-frame {
  position: relative;
  display: block;
  background: var(--panel-blue);
  border: 1px solid var(--line-blue);
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(76, 242, 0, 0.06) 100%);
  pointer-events: none;
}

.image-frame:hover {
  border-color: rgba(76, 242, 0, 0.4);
  box-shadow: var(--shadow-glow);
}

/* ---------- 22. 滚动显现 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* ---------- 23. 响应式 ---------- */
@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr repeat(4, 1fr);
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
    margin-bottom: 8px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    width: min(360px, 85vw);
    background: var(--layer-blue);
    border-left: 1px solid var(--line-blue);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    padding: 32px 28px 48px;
    z-index: 600;
    box-shadow: -16px 0 40px rgba(0, 0, 0, 0.4);
  }

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

  body[data-nav-open] {
    overflow: hidden;
  }

  .main-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .main-nav__item {
    border-bottom: 1px solid var(--divider);
  }

  .main-nav__link {
    flex-direction: row;
    align-items: center;
    gap: 14px;
    padding: 16px 12px;
    font-size: 16px;
  }

  .main-nav__link::before {
    margin-bottom: 0;
    font-size: 11px;
    min-width: 24px;
  }

  .main-nav__link::after {
    left: 12px;
    right: auto;
    width: 0;
    bottom: -1px;
    background: linear-gradient(90deg, var(--electric-green), transparent 120%);
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 36px 28px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .topbar__code {
    display: none;
  }
}

@media (max-width: 560px) {
  :root {
    --header-h: 60px;
  }

  .container,
  .header-main__inner,
  .footer-main,
  .footer-trust,
  .footer-bottom p {
    padding-left: 18px;
    padding-right: 18px;
  }

  .brand__logo {
    font-size: 24px;
  }

  .brand__suffix {
    font-size: 10px;
    padding: 0 5px;
  }

  .topbar__inner {
    padding-left: 16px;
    padding-right: 16px;
    gap: 10px;
  }

  .topbar__message {
    font-size: 12px;
  }

  .section {
    padding: 56px 0;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
    padding-top: 48px;
    padding-bottom: 32px;
  }

  .footer-col__title {
    font-size: 12px;
  }

  .footer-col__link {
    font-size: 13px;
  }
}

/* ---------- 24. 减少动态偏好 ---------- */
@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;
  }

  .topbar__dot {
    animation: none;
  }

  .scroll-progress::after {
    transition: none;
  }

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

/* ---------- 25. 页面生成辅助 ---------- */
.mono-value {
  font-family: var(--font-mono);
  letter-spacing: -0.01em;
}

.text-electric {
  color: var(--electric-green);
}

.text-orange {
  color: var(--signal-orange);
}

.text-mist {
  color: var(--mist-blue);
}