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

/* ===== :root 设计变量 ===== */
:root {
  --color-bg: #0A1F44;
  --color-bg-deep: #060F2B;
  --color-surface: #142A52;
  --color-border: #2E3A59;
  --color-text: #B8C4D6;
  --color-text-muted: #6C7A99;
  --color-heading: #FFFFFF;
  --color-accent: #FF6B35;
  --color-success: #00D084;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Oswald", "Impact", "Arial Black", sans-serif;
  --container-width: 1200px;
  --radius: 8px;
  --radius-pill: 999px;
  --shadow-accent: 0 4px 14px rgba(255, 107, 53, 0.3);
  --shadow-success: 0 4px 14px rgba(0, 208, 132, 0.25);
  --transition-base: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; border: none; background: none; color: inherit; }
button { cursor: pointer; }
img, svg, canvas { display: block; max-width: 100%; }

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

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

/* ===== 滚动进度 ===== */
[data-scroll-progress] {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  background: rgba(255, 107, 53, 0.25);
  z-index: 2000;
  pointer-events: none;
  transition: width 0.15s linear;
}
[data-scroll-progress]::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--color-accent);
  transform-origin: left center;
}

/* ===== 通用容器 ===== */
.container {
  width: min(var(--container-width), 100% - 48px);
  margin-inline: auto;
}

/* ===== 跳转链接 ===== */
.site-skip {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 3000;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  padding: 12px 20px;
  border-radius: 0 0 8px 8px;
  transition: top 0.2s ease;
}
.site-skip:focus-visible {
  top: 0;
}

/* ===== 顶部头部 ===== */
.site-header {
  position: relative;
  background: var(--color-bg);
  color: var(--color-heading);
  display: flex;
  flex-wrap: wrap;
  border-bottom: 3px solid var(--color-accent);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 40px) 100%, 0 100%);
  padding-bottom: 28px;
}

/* 品牌轨道 */
.brand-rail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 18px 24px 10px;
  border-right: 1px solid var(--color-border);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
}
.brand-mark__logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 30px;
  border-radius: 8px 8px 8px 2px;
  transform: skewX(-8deg);
}
.brand-mark__logo::first-letter { transform: skewX(8deg); }
.brand-mark__text {
  font-size: 24px;
  letter-spacing: 0.02em;
}
.brand-mark__text span {
  color: var(--color-accent);
  margin-left: 4px;
  font-size: 16px;
}

.batch-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-success);
  background: rgba(0, 208, 132, 0.12);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid rgba(0, 208, 132, 0.3);
  white-space: nowrap;
}
.batch-indicator__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 0 0 rgba(0, 208, 132, 0.6);
  animation: pulse-green 2s infinite;
}
@keyframes pulse-green {
  0% { box-shadow: 0 0 0 0 rgba(0, 208, 132, 0.6); }
  70% { box-shadow: 0 0 0 10px rgba(0, 208, 132, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 208, 132, 0); }
}

/* 头部主区 */
.header-main {
  width: 100%;
  padding: 0 24px;
}

.header-topline {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px 0 8px;
  border-bottom: 1px solid var(--color-border);
}
.header-topline__slogan {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--color-heading);
}
.header-topline__slogan::before {
  content: "// ";
  color: var(--color-accent);
}

.header-search {
  display: flex;
  align-items: center;
  max-width: 100%;
}
.header-search__icon {
  width: 16px;
  height: 16px;
  margin-right: 8px;
  border: 2px solid var(--color-text);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.header-search__icon::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 2px;
  background: var(--color-text);
  bottom: -3px;
  right: -4px;
  transform: rotate(45deg);
}
.search-field {
  flex: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 6px 0 0 6px;
  padding: 8px 12px;
  color: var(--color-heading);
  font-size: 14px;
  min-width: 0;
}
.search-field::placeholder { color: var(--color-text-muted); }
.search-field:focus { border-color: var(--color-accent); outline: none; box-shadow: 0 0 0 2px rgba(255,107,53,0.2); }
.search-btn {
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  padding: 8px 14px;
  border-radius: 0 6px 6px 0;
  flex-shrink: 0;
}

/* 导航 */
.site-nav-wrap {
  padding: 12px 0;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--color-heading);
  font-weight: 600;
  width: fit-content;
}
.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-accent);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle__text { font-size: 14px; }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 4px;
  background: rgba(20, 42, 82, 0.7);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}
.site-nav .nav-link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-heading);
  padding: 8px 16px;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.nav-link:hover {
  background: rgba(255, 107, 53, 0.15);
  color: var(--color-accent);
}
.nav-link[aria-current="page"] {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: var(--shadow-accent);
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 10px 20px;
  border-radius: 6px;
  border: 2px solid transparent;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--color-accent); color: var(--color-bg); box-shadow: var(--shadow-accent); }
.btn-ghost { border-color: var(--color-accent); color: var(--color-accent); background: transparent; }
.btn-green { background: var(--color-success); color: var(--color-bg); box-shadow: var(--shadow-success); }

/* ===== 面包屑 ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--color-success); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb__sep { color: var(--color-text-muted); user-select: none; }

/* ===== 内容区与标题 ===== */
#main-content {
  display: block;
}

.section-title {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-heading);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.section-title::before {
  content: "";
  width: 6px;
  height: 36px;
  background: var(--color-accent);
  transform: skewX(-15deg);
  flex-shrink: 0;
}

/* ===== 数据标签 ===== */
.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 13px;
}
.dot-live {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  box-shadow: 0 0 6px rgba(0,208,132,0.8);
}

/* ===== 卡片网格 ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.tilt-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px 10px 10px 2px;
  padding: 20px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.tilt-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.35);
}

/* ===== 图片容器基础 ===== */
.img-frame {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  background: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 14px;
  min-height: 140px;
}
.img-frame::after {
  content: "SPORTS DATA // ";
  position: absolute;
  top: 8px;
  right: 10px;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.15em;
  color: rgba(255,107,53,0.7);
  background: rgba(10,31,68,0.7);
  padding: 2px 8px;
  border-radius: 3px;
}
.img-frame--ratio-16-9 { aspect-ratio: 16 / 9; }
.img-frame--ratio-4-3 { aspect-ratio: 4 / 3; }
.img-frame--ratio-1-1 { aspect-ratio: 1 / 1; }
.img-frame__placeholder {
  font-family: var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* ===== 页脚 ===== */
.site-footer {
  position: relative;
  background: var(--color-bg);
  color: var(--color-text);
  border-top: 4px solid var(--color-accent);
  margin-top: 80px;
  clip-path: polygon(0 24px, 32px 0, 100% 0, 100% 100%, 0 100%);
  padding-top: 48px;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 60%, transparent 60%);
}
.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  width: min(var(--container-width), 100% - 48px);
  margin-inline: auto;
  padding: 8px 0 32px;
}
.footer-brand {
  flex: 1 1 340px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.footer-logo {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-heading);
  line-height: 1.1;
}
.footer-logo span {
  font-size: 18px;
  color: var(--color-accent);
  margin-left: 6px;
}
.footer-blurb {
  font-size: 14px;
  max-width: 40em;
  color: var(--color-text);
}

.trust-badge {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: rgba(0, 208, 132, 0.08);
  border-left: 4px solid var(--color-success);
  padding: 12px 16px;
  border-radius: 0 8px 8px 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-text);
}
.trust-badge__icon {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-success);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
  margin-top: 2px;
}
.trust-badge__icon::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 3px;
  width: 4px;
  height: 8px;
  border: solid var(--color-success);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.footer-links {
  flex: 1 1 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-heading {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--color-heading);
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 6px;
}
.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-links a {
  color: var(--color-text);
  font-size: 14px;
  padding: 4px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-links a::before {
  content: "> ";
  color: var(--color-accent);
  font-weight: 700;
}
.footer-links a:hover {
  color: var(--color-heading);
  padding-left: 6px;
}

.footer-contact {
  flex: 1 1 280px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.contact-item {
  display: grid;
  grid-template-columns: 3em 1fr;
  gap: 8px;
  font-size: 14px;
  border-bottom: 1px dashed var(--color-border);
  padding: 8px 0;
  min-width: 0;
}
.contact-item__label {
  color: var(--color-text-muted);
  font-weight: 600;
}
.contact-item__value {
  color: var(--color-heading);
  word-break: break-all;
}
.copy-btn {
  text-align: left;
  color: var(--color-success);
  font-family: inherit;
  font-size: 14px;
  padding: 0;
  transition: color 0.2s ease;
  position: relative;
  word-break: break-all;
}
.copy-btn:hover { color: var(--color-accent); }
.copy-btn.is-copied { color: #FFD700; }
.copy-btn.is-copied::after {
  content: "已复制";
  font-size: 11px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 8px;
  white-space: nowrap;
}
.contact-note {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.footer-bottom {
  background: var(--color-bg-deep);
  border-top: 1px solid var(--color-border);
  padding: 16px 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--color-text-muted);
}
.footer-bottom a {
  color: var(--color-text-muted);
  border-bottom: 1px dashed var(--color-border);
  transition: color 0.2s ease;
}
.footer-bottom a:hover { color: var(--color-heading); }

/* ===== 移动导航状态 ===== */
@media (max-width: 991px) {
  .nav-toggle {
    display: inline-flex;
  }
  .site-nav {
    position: absolute;
    top: calc(100% - 12px);
    left: 16px;
    right: 16px;
    flex-direction: column;
    border-radius: 12px;
    background: var(--color-surface);
    box-shadow: 0 16px 40px rgba(0,0,0,0.5);
    padding: 12px;
    transform-origin: top center;
    transform: translateY(-12px) scaleY(0.8);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
    z-index: 2500;
  }
  .site-nav .nav-link {
    border-radius: 8px;
  }
  .site-nav[data-open] {
    transform: translateY(0) scaleY(1);
    opacity: 1;
    visibility: visible;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .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(-6px) rotate(-45deg);
  }
}

/* ===== 响应式布局 ===== */
@media (min-width: 768px) {
  .header-topline {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .header-search {
    max-width: 380px;
  }
}

@media (min-width: 1080px) {
  .site-header {
    flex-wrap: nowrap;
    padding-bottom: 40px;
  }
  .brand-rail {
    width: auto;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 28px;
    padding: 24px 28px 32px;
    border-right: 1px solid var(--color-border);
  }
  .brand-mark__logo {
    width: 56px;
    height: 56px;
    font-size: 36px;
  }
  .brand-mark__text {
    font-size: 28px;
  }
  .batch-indicator {
    margin-top: auto;
  }
  .header-main {
    flex: 1;
    padding: 0 32px;
  }
  .header-topline {
    padding: 20px 0 14px;
  }
  .header-search {
    max-width: 420px;
  }
  .site-nav-wrap {
    padding: 16px 0;
  }
  .site-nav {
    gap: 10px;
    padding: 6px;
    width: fit-content;
    margin-left: auto;
    background: rgba(10, 31, 68, 0.75);
    border-color: var(--color-accent);
  }
}

@media (min-width: 1200px) {
  .site-header {
    border-bottom-width: 4px;
  }
  .site-header::after {
    content: "";
    position: absolute;
    right: 0;
    bottom: 4px;
    width: 180px;
    height: 6px;
    background: linear-gradient(90deg, transparent, var(--color-success));
    z-index: 1;
  }
}

/* ===== 动效与无障碍 ===== */
@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;
  }
  [data-scroll-progress] { transition: none; }
  .batch-indicator__dot { animation: none; }
}

/* ===== 移入显现（页面阶段可用） ===== */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===== 主题筛选 ===== */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.filter-btn {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(20, 42, 82, 0.6);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.filter-btn:hover { border-color: var(--color-accent); color: var(--color-heading); }
.filter-btn.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
}
.empty-state {
  padding: 40px;
  text-align: center;
  color: var(--color-text-muted);
  border: 1px dashed var(--color-border);
  border-radius: 8px;
  font-size: 14px;
}