/* ==========================================================================
   易倍体育赛事 — /assets/site.css
   共享外壳样式：reset / 变量 / 中文排版 / 刊头 / 页脚 / 通用组件
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  background: #0B1030;
  scroll-padding-top: 140px;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.75;
  font-weight: 400;
  color: var(--mist-white);
  background-color: var(--deep-indigo);
  background-image:
    linear-gradient(to right, rgba(38, 48, 92, 0.34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(38, 48, 92, 0.34) 1px, transparent 1px);
  background-size: 96px 96px;
  background-position: -1px -1px;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 0%, rgba(34, 224, 218, 0.06), transparent 60%);
}

img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, p, figure, blockquote { margin: 0; }
address { font-style: normal; }

:root {
  /* 色彩令牌 */
  --deep-indigo: #0B1030;
  --panel-indigo: #141B42;
  --charcoal: #070A16;
  --cold-gray: #8B93B0;
  --mist-white: #EEF2FF;
  --electric-cyan: #22E0DA;
  --fluoro-orange: #FF7A2F;
  --signal-green: #38D39F;
  --grid-line: #26305C;
  --gradient-veil: linear-gradient(160deg, #0B1030 0%, #16305C 48%, #10314A 100%);

  /* 字体 */
  --sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular,
          Menlo, Consolas, "Courier New", monospace;

  /* 节奏与网格 */
  --shell: 1280px;
  --gutter: clamp(16px, 4vw, 40px);
  --pad-1: 24px;
  --pad-2: 32px;
  --pad-3: 48px;
  --radius: 4px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --t: 240ms;

  --header-h: 88px;
}

/* --------------------------------------------------------------------------
   主内容层级
   -------------------------------------------------------------------------- */
#main-content,
.site-footer,
.skip-link {
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   通用排版
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.02em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 5.5rem);
  font-weight: 200;
  letter-spacing: 0.02em;
}

h2 { font-size: clamp(1.55rem, 3.2vw, 2.5rem); font-weight: 600; }
h3 { font-size: clamp(1.15rem, 2vw, 1.5rem); }
h4 { font-size: 1.05rem; }

p { text-wrap: pretty; }

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.idx {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cold-gray);
}

.prose {
  max-width: 68ch;
  font-size: 17px;
  line-height: 1.75;
  color: #CBD3EE;
}

.prose + .prose { margin-top: 1.15em; }

.prose strong { color: var(--mist-white); font-weight: 600; }

.prose a {
  color: var(--electric-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

/* --------------------------------------------------------------------------
   布局容器
   -------------------------------------------------------------------------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

/* --------------------------------------------------------------------------
   跳过链接
   -------------------------------------------------------------------------- */
.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 200;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--charcoal);
  background: var(--electric-cyan);
  border-radius: 0 0 var(--radius) var(--radius);
  transform: translateY(-220%);
  transition: transform var(--t) var(--ease);
}

.skip-link:focus { transform: translateY(0); }

/* --------------------------------------------------------------------------
   刊头
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--charcoal);
  border-bottom: 1px solid var(--grid-line);
}

.masthead {
  background:
    radial-gradient(115% 190% at 50% -60%, rgba(34, 224, 218, 0.11), transparent 58%),
    var(--charcoal);
}

.masthead__grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "brand data cta";
  align-items: center;
  gap: 20px;
  min-height: var(--header-h);
  padding-block: 14px;
}

/* 品牌署名 */
.brand {
  grid-area: brand;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  justify-self: start;
  min-width: 0;
}

.brand__mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  font-size: 18px;
  font-weight: 700;
  color: var(--charcoal);
  background: var(--electric-cyan);
  border-radius: var(--radius);
}

.brand__text { display: grid; min-width: 0; }

.brand__name {
  font-size: clamp(1.05rem, 2.1vw, 1.4rem);
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.2;
  white-space: nowrap;
}

.brand__line {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
  line-height: 1.6;
  white-space: nowrap;
}

/* 数据角标 */
.databox {
  grid-area: data;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  font-size: 12px;
  letter-spacing: 0.12em;
  white-space: nowrap;
  background: rgba(20, 27, 66, 0.72);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
}

.databox__label { color: var(--cold-gray); }
.databox__value { font-size: 13px; font-weight: 700; color: var(--electric-cyan); }
.databox__time { font-size: 13px; font-weight: 700; color: var(--fluoro-orange); }
.databox__div { width: 1px; height: 14px; background: var(--grid-line); }

/* 快捷操作 */
.masthead__cta {
  grid-area: cta;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 13px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease),
              border-color var(--t) var(--ease);
}

.btn--line {
  color: var(--cold-gray);
  background: transparent;
  border-color: var(--grid-line);
}

.btn--line:hover {
  color: var(--electric-cyan);
  border-color: var(--electric-cyan);
}

.btn--fill {
  color: var(--charcoal);
  font-weight: 700;
  background: var(--electric-cyan);
}

.btn--fill:hover { background: var(--mist-white); }

.btn--ghost {
  color: var(--mist-white);
  background: rgba(34, 224, 218, 0.1);
  border-color: rgba(34, 224, 218, 0.4);
}

.btn--ghost:hover { background: rgba(34, 224, 218, 0.2); }

/* 移动导航按钮 */
.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist-white);
  background: transparent;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.nav-toggle:hover { border-color: var(--electric-cyan); color: var(--electric-cyan); }

.nav-toggle__bars { display: grid; gap: 4px; width: 18px; }

.nav-toggle__bars i {
  display: block;
  height: 1px;
  background: var(--cold-gray);
  transition: transform var(--t) var(--ease), opacity var(--t) var(--ease),
              background-color var(--t) var(--ease);
}

.nav-toggle[aria-expanded="true"] { color: var(--electric-cyan); border-color: var(--electric-cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i { background: var(--electric-cyan); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* 栏目导航 */
.site-nav {
  background: var(--charcoal);
  border-top: 1px solid rgba(38, 48, 92, 0.6);
}

.site-nav__list {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(8px, 3vw, 44px);
}

.site-nav__item { display: block; }

.site-nav__link {
  position: relative;
  display: inline-block;
  padding: 15px 2px;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--cold-gray);
  transition: color var(--t) var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 9px;
  height: 1px;
  background: var(--electric-cyan);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t) var(--ease);
}

.site-nav__link:hover { color: var(--mist-white); }
.site-nav__link:hover::after { transform: scaleX(1); }

.site-nav__link[aria-current="page"] { color: var(--mist-white); }
.site-nav__link[aria-current="page"]::after { transform: scaleX(1); height: 2px; }

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.site-footer {
  margin-top: clamp(64px, 9vw, 132px);
  background: var(--charcoal);
  border-top: 1px solid var(--grid-line);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(260px, 46%);
  height: 2px;
  background: linear-gradient(90deg, var(--electric-cyan), rgba(34, 224, 218, 0));
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr 0.9fr 0.9fr 1.5fr;
  gap: clamp(24px, 3vw, 40px);
  padding-block: clamp(40px, 6vw, 76px);
}

.footer__col { min-width: 0; }

.footer__mark {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.footer__note {
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
}

.footer__meta {
  margin-top: 14px;
  padding-left: 14px;
  position: relative;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cold-gray);
}

.footer__meta::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--signal-green);
}

.footer__title {
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--electric-cyan);
}

.footer__list li + li { margin-top: 9px; }

.footer__list a {
  font-size: 14.5px;
  color: var(--cold-gray);
  text-decoration: underline;
  text-decoration-color: transparent;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color var(--t) var(--ease), text-decoration-color var(--t) var(--ease);
}

.footer__list a:hover {
  color: var(--mist-white);
  text-decoration-color: var(--electric-cyan);
}

.footer__address p {
  font-size: 14px;
  line-height: 1.9;
  color: var(--cold-gray);
}

.footer__address .mono { color: var(--mist-white); font-size: 13.5px; }

.footer__tip {
  margin-top: 10px;
  padding-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: #6E779A;
  border-top: 1px solid rgba(38, 48, 92, 0.6);
}

.footer__bar { border-top: 1px solid rgba(38, 48, 92, 0.6); }

.footer__bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  padding-block: 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--cold-gray);
}

.footer__legal { margin: 0; }

.footer__utils { display: inline-flex; align-items: center; gap: 18px; }

.footer__utils a {
  color: var(--cold-gray);
  transition: color var(--t) var(--ease);
}

.footer__utils a:hover { color: var(--electric-cyan); }

.linkbtn {
  padding: 0;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  color: var(--cold-gray);
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.linkbtn:hover { color: var(--electric-cyan); border-bottom-color: var(--electric-cyan); }

/* --------------------------------------------------------------------------
   通用组件：面板 / 面包屑 / 图片容器
   -------------------------------------------------------------------------- */
.panel {
  position: relative;
  padding: var(--pad-2);
  background: var(--panel-indigo);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
}

.panel--flat { background: transparent; }
.panel--tight { padding: var(--pad-1); }
.panel--accent {
  background: var(--gradient-veil);
  border-color: rgba(34, 224, 218, 0.28);
}

.panel__idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--electric-cyan);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
}

.breadcrumb a { color: var(--cold-gray); transition: color var(--t) var(--ease); }
.breadcrumb a:hover { color: var(--electric-cyan); }
.breadcrumb__sep { color: var(--grid-line); }
.breadcrumb [aria-current="page"] { color: var(--mist-white); }

.figure {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(34, 224, 218, 0.12), transparent 58%),
    linear-gradient(315deg, rgba(255, 122, 47, 0.10), transparent 52%),
    var(--panel-indigo);
}

.figure--wide { aspect-ratio: 21 / 9; }
.figure--tall { aspect-ratio: 3 / 4; }
.figure--square { aspect-ratio: 1 / 1; }

.figure > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(45deg,
    rgba(38, 48, 92, 0.55) 0 1px, transparent 1px 11px);
  pointer-events: none;
}

.figure--placeholder::after {
  content: attr(data-label);
  position: absolute;
  left: 16px;
  top: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cold-gray);
}

.figure__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cold-gray);
  background: linear-gradient(0deg, rgba(7, 10, 22, 0.94), rgba(7, 10, 22, 0));
}

/* --------------------------------------------------------------------------
   JS 注入的滚动层
   -------------------------------------------------------------------------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 120;
  pointer-events: none;
  background: rgba(38, 48, 92, 0.5);
}

.scroll-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--electric-cyan), var(--fluoro-orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 120ms linear;
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(14px, 3vw, 30px);
  z-index: 110;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
  background: rgba(20, 27, 66, 0.94);
  border: 1px solid var(--grid-line);
  border-radius: var(--radius);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease),
              visibility var(--t) linear, color var(--t) var(--ease),
              border-color var(--t) var(--ease);
}

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.to-top:hover { color: var(--electric-cyan); border-color: var(--electric-cyan); }

/* --------------------------------------------------------------------------
   入场动效（依赖 html.js 标记，避免无 JS 时内容不可见）
   -------------------------------------------------------------------------- */
.js [data-reveal] {
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}

.js [data-reveal="pending"] {
  opacity: 0;
  transform: translateY(16px);
}

.js [data-reveal="in"] {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   焦点态
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--electric-cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

.site-nav__link:focus-visible,
.footer__list a:focus-visible { outline-offset: 4px; }

/* --------------------------------------------------------------------------
   响应式：平板
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .footer__grid {
    grid-template-columns: 1.6fr 1fr 1fr;
    row-gap: 36px;
  }

  .footer__col--contact { grid-column: 1 / -1; }
  .footer__address {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 4px 24px;
  }
  .footer__tip { grid-column: 1 / -1; }
}

/* --------------------------------------------------------------------------
   响应式：移动导航断点
   -------------------------------------------------------------------------- */
@media (max-width: 920px) {
  html { scroll-padding-top: 190px; }

  .masthead__grid {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand toggle"
      "data  data"
      "cta   cta";
    gap: 12px;
    min-height: 0;
    padding-block: 14px 16px;
  }

  .brand { justify-self: start; }
  .brand__line { display: none; }

  .nav-toggle {
    display: inline-flex;
    justify-self: end;
    grid-area: toggle;
  }

  .databox {
    justify-self: stretch;
    justify-content: flex-start;
    padding: 7px 12px;
  }

  .masthead__cta {
    justify-self: stretch;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .masthead__cta .btn { width: 100%; }

  .site-nav { display: none; }

  .site-nav[data-open] {
    display: block;
    animation: navDrop var(--t) var(--ease) both;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 6px 14px;
  }

  .site-nav__item { border-bottom: 1px solid rgba(38, 48, 92, 0.55); }
  .site-nav__item:last-child { border-bottom: 0; }

  .site-nav__link {
    display: block;
    padding: 15px 0;
    font-size: 16px;
    letter-spacing: 0.04em;
  }

  .site-nav__link::after { display: none; }

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

  .site-nav__link[aria-current="page"]::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-right: 10px;
    vertical-align: middle;
    background: var(--electric-cyan);
  }
}

@keyframes navDrop {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   响应式：手机
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  body { font-size: 16px; }

  .grid-12 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .panel { padding: var(--pad-1); }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    row-gap: 32px;
    padding-block: 40px;
  }

  .footer__col--brand,
  .footer__col--contact { grid-column: 1 / -1; }

  .footer__address { display: block; }

  .footer__bar-inner {
    justify-content: flex-start;
    font-size: 12px;
  }

  .to-top { bottom: 88px; }
}

@media (max-width: 480px) {
  .databox { font-size: 11px; letter-spacing: 0.08em; gap: 8px; }
  .databox__value, .databox__time { font-size: 12px; }
  .brand__mark { width: 34px; height: 34px; font-size: 16px; }
}

/* --------------------------------------------------------------------------
   降低动效偏好
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .js [data-reveal],
  .js [data-reveal="pending"],
  .js [data-reveal="in"] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .skip-link,
  .to-top,
  .site-nav__link::after,
  .btn,
  .linkbtn,
  .footer__list a {
    transition-duration: 1ms;
  }

  .site-nav[data-open] { animation: none; }

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