/* ============================================
   OB体育入口 — 全站共享样式 /assets/site.css
   设计母题：直播控制台 / 实时比分广播
   色彩：深蓝黑 #0a0e14 + 荧光绿 #39FF14 + 科技蓝 #00E5FF
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --c-bg: #0a0e14;
  --c-panel: #121820;
  --c-elev: #1a222e;
  --c-green: #39ff14;
  --c-blue: #00e5ff;
  --c-text: #e8f0f8;
  --c-text-2: #8a9ab5;
  --c-text-3: #4a5a75;
  --c-warn: #ffd700;
  --gradient: linear-gradient(135deg, #39ff14 0%, #00e5ff 100%);
  --font-head: "Anton", Impact, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "Roboto Mono", Consolas, monospace;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container-w: 1320px;
  --header-z: 100;
  --float-z: 90;
  --progress-z: 300;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset 与基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--c-green) var(--c-bg);
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  isolation: isolate;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: repeating-linear-gradient(
    -45deg,
    rgba(57, 255, 20, 0.018) 0 1px,
    transparent 1px 18px
  );
  pointer-events: none;
}

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

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--c-bg);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--c-green), var(--c-blue));
  border-radius: 999px;
  border: 2px solid var(--c-bg);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-green);
}

/* ---------- 中文排版与文本 ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.01em;
  margin: 0 0 0.75rem;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

h3 {
  font-size: 1.4rem;
}

h4 {
  font-size: 1.15rem;
}

p {
  margin: 0 0 1rem;
}

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

a:hover {
  color: var(--c-green);
}

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

ul,
ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

small {
  font-size: 0.85em;
}

b,
strong {
  font-weight: 700;
}

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

#main-content {
  outline: none;
  scroll-margin-top: 9rem;
}

/* ---------- 容器与布局 ---------- */
.container {
  width: min(100% - 2rem, var(--container-w));
  margin-inline: auto;
}

.section {
  padding: 3.5rem 0;
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.5rem;
}

.grid-item {
  min-width: 0;
}

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.25s,
    box-shadow 0.25s var(--ease),
    transform 0.25s var(--ease),
    color 0.2s;
}

.btn-primary {
  background: var(--c-green);
  color: var(--c-bg);
}

.btn-primary:hover {
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.4);
  transform: translateY(-2px);
  color: var(--c-bg);
}

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

.btn-ghost:hover {
  background: rgba(0, 229, 255, 0.1);
  color: var(--c-blue);
}

.btn-sm {
  padding: 0.45rem 1.1rem;
  font-size: 0.84rem;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem;
  padding: 0;
  margin: 0 0 1.5rem;
  list-style: none;
  font-size: 0.86rem;
  color: var(--c-text-3);
}

.breadcrumb a {
  color: var(--c-text-2);
  text-decoration: none;
}

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

.breadcrumb a::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--c-text-3);
}

.breadcrumb span[aria-current="page"] {
  color: var(--c-text);
  font-weight: 600;
}

/* ---------- 卡片与图片容器 ---------- */
.card {
  background: var(--c-panel);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition:
    transform 0.3s var(--ease),
    box-shadow 0.3s var(--ease),
    border-color 0.3s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
  border-color: rgba(0, 229, 255, 0.25);
}

.img-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--c-panel);
}

.img-frame::before {
  content: "";
  display: block;
  padding-top: 62.5%;
}

.img-frame-16-9::before {
  padding-top: 56.25%;
}

.img-frame-4-3::before {
  padding-top: 75%;
}

.img-frame-square::before {
  padding-top: 100%;
}

.img-frame > img,
.img-frame > picture > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, transparent 60%, rgba(0, 229, 255, 0.08)),
    linear-gradient(300deg, transparent 70%, rgba(57, 255, 20, 0.08));
  pointer-events: none;
}

/* ---------- 滚动进度与返回顶部 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--gradient);
  box-shadow: 0 0 12px rgba(57, 255, 20, 0.5);
  z-index: var(--progress-z);
  pointer-events: none;
}

.back-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  border: 1px solid var(--c-green);
  background: var(--c-elev);
  color: var(--c-green);
  font-family: var(--font-num);
  font-size: 1.3rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  pointer-events: none;
  transition:
    opacity 0.3s var(--ease),
    transform 0.3s var(--ease),
    background 0.2s,
    color 0.2s;
  z-index: var(--float-z);
}

.back-top[data-visible="true"],
.back-top:focus-visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-top:hover {
  background: var(--c-green);
  color: var(--c-bg);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.4);
}

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: calc(var(--progress-z) + 1);
  background: var(--c-green);
  color: var(--c-bg);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  text-decoration: none;
  transition: top 0.25s var(--ease);
}

.skip-link:focus-visible {
  top: 1rem;
}

/* ---------- 站点头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--header-z);
  background: rgba(10, 14, 20, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 229, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 60px;
}

/* ---------- 品牌标识 ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  text-decoration: none;
  color: var(--c-text);
}

.brand:hover {
  color: var(--c-text);
}

.brand-mark {
  display: inline-flex;
  align-items: flex-end;
  justify-content: center;
  gap: 2px;
  width: 30px;
  height: 30px;
  padding: 6px;
  background: var(--gradient);
  border-radius: 9px;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 78% 100%, 0 100%);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.3);
}

.brand-bar {
  display: block;
  width: 3px;
  background: var(--c-bg);
  border-radius: 3px 3px 0 0;
}

.brand-bar-1 {
  height: 6px;
}

.brand-bar-2 {
  height: 13px;
}

.brand-bar-3 {
  height: 9px;
}

.brand-text {
  font-family: var(--font-head);
  font-size: 1.4rem;
  letter-spacing: 0.03em;
  color: var(--c-text);
  white-space: nowrap;
}

.brand-text::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-green);
  margin-left: 4px;
  box-shadow: 0 0 10px var(--c-green);
  vertical-align: middle;
}

/* ---------- 主导航 ---------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  color: var(--c-text-2);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 999px;
  transition:
    color 0.2s,
    background 0.2s;
}

.nav-link:hover {
  color: var(--c-text);
  background: rgba(57, 255, 20, 0.08);
}

.nav-link[aria-current="page"],
.nav-link[aria-current="true"] {
  color: var(--c-bg);
  background: var(--c-green);
  box-shadow: 0 0 16px rgba(57, 255, 20, 0.35);
}

.nav-link[aria-current="page"]:hover,
.nav-link[aria-current="true"]:hover {
  color: var(--c-bg);
}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  min-width: 48px;
  padding: 8px 14px;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  cursor: pointer;
}

.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition:
    transform 0.3s var(--ease),
    opacity 0.2s;
}

.nav-toggle-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-text-2);
}

.site-header[data-open] .nav-toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.site-header[data-open] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* ---------- 实时比分滚动条 ---------- */
.score-ticker {
  display: flex;
  align-items: stretch;
  height: 38px;
  background: linear-gradient(90deg, rgba(57, 255, 20, 0.12), rgba(0, 229, 255, 0.08));
  border-top: 1px solid rgba(57, 255, 20, 0.25);
  border-bottom: 1px solid rgba(0, 229, 255, 0.15);
  overflow: hidden;
}

.ticker-tag {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  padding: 0 1rem;
  font-family: var(--font-num);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  background: var(--c-green);
  color: var(--c-bg);
  text-transform: uppercase;
  flex-shrink: 0;
}

.ticker-tag::after {
  content: "";
  position: absolute;
  right: -7px;
  top: 0;
  width: 0;
  height: 0;
  border-top: 19px solid transparent;
  border-bottom: 19px solid transparent;
  border-left: 7px solid var(--c-green);
}

.ticker-viewport {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.ticker-track {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  will-change: transform;
  animation: ticker-scroll 32s linear infinite;
}

@keyframes ticker-scroll {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 1.25rem;
  font-family: var(--font-num);
  font-size: 0.82rem;
  color: var(--c-text-2);
}

.ticker-item b {
  font-weight: 600;
  color: var(--c-text);
}

.ticker-league {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--c-text-3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.ticker-score {
  font-weight: 700;
  color: var(--c-green);
  padding: 2px 8px;
  background: rgba(57, 255, 20, 0.1);
  border-radius: 6px;
}

.ticker-item em {
  font-style: normal;
  font-size: 0.72rem;
  color: var(--c-blue);
  background: rgba(0, 229, 255, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
}

.ticker-item::after {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--c-text-3);
  margin-left: 1rem;
  flex-shrink: 0;
}

/* ---------- 追比分入口 ---------- */
.chase-wrap {
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.06), rgba(57, 255, 20, 0.06));
}

.chase-wrap::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.015) 0 1px,
    transparent 1px 10px
  );
  pointer-events: none;
}

.chase-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  min-height: 42px;
}

.chase-entry {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.4rem;
  border-radius: 999px;
  background: var(--gradient);
  color: var(--c-bg);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.25);
  transition:
    box-shadow 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.chase-entry:hover {
  box-shadow: 0 0 30px rgba(57, 255, 20, 0.5);
  transform: translateY(-1px);
  color: var(--c-bg);
}

.chase-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-bg);
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.8);
}

.chase-note {
  font-size: 0.78rem;
  color: var(--c-text-3);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ---------- 站点页脚 ---------- */
.site-footer {
  position: relative;
  background: var(--c-panel);
  border-top: 1px solid rgba(57, 255, 20, 0.2);
  margin-top: 5rem;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
}

.site-footer::after {
  content: "";
  position: absolute;
  top: -80px;
  right: 8%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.1), transparent 70%);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 2.5rem;
  padding: 3rem 0 2.5rem;
}

.site-footer .brand {
  margin-bottom: 1rem;
}

.footer-slogan {
  font-size: 0.9rem;
  color: var(--c-blue);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.footer-trust {
  font-size: 0.85rem;
  color: var(--c-text-2);
  line-height: 1.8;
  max-width: 40ch;
  margin-bottom: 0;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.footer-col-title {
  font-family: var(--font-num);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--c-text-3);
  margin-bottom: 0.25rem;
}

.footer-link {
  color: var(--c-text-2);
  text-decoration: none;
  font-size: 0.9rem;
  display: inline-block;
  transition:
    color 0.2s,
    transform 0.2s var(--ease);
}

.footer-link:hover {
  color: var(--c-green);
  transform: translateX(3px);
}

.footer-contact-line {
  font-size: 0.9rem;
  color: var(--c-text-2);
  margin-bottom: 0.35rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(0, 0, 0, 0.2);
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1.1rem 0;
  font-size: 0.82rem;
  color: var(--c-text-3);
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* ---------- 响应式：移动端 ---------- */
@media (max-width: 900px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% - 1px);
    right: 0;
    width: min(80vw, 320px);
    flex-direction: column;
    align-items: stretch;
    gap: 0.125rem;
    margin: 0;
    padding: 1rem;
    background: rgba(18, 24, 32, 0.98);
    border: 1px solid rgba(0, 229, 255, 0.2);
    border-top: none;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.55);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition:
      opacity 0.3s var(--ease),
      transform 0.3s var(--ease),
      visibility 0.3s;
    z-index: calc(var(--header-z) + 1);
  }

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

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border-radius: 12px;
  }

  .header-inner {
    min-height: 56px;
    gap: 1rem;
  }

  .score-ticker {
    display: none;
  }

  .chase-note {
    display: none;
  }

  .chase-inner {
    min-height: 40px;
  }

  #main-content {
    scroll-margin-top: 6.5rem;
  }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
    padding: 2.5rem 0 2rem;
  }

  .footer-brand-col {
    margin-bottom: 0.5rem;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 低动效偏好 ---------- */
@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;
  }

  .ticker-track {
    animation: none !important;
  }

  .ticker-viewport {
    overflow-x: auto;
  }

  .back-top {
    transition: none !important;
  }
}