/* =============================================================
   B体育竞界 · 全站共享层 /assets/site.css
   夜间赛场直播间 · 锐利直角 · 精密网格
   ============================================================= */

/* ---------- 设计变量 ---------- */
:root {
  --bg-deep: #0a0e1a;
  --bg-card: #111a30;
  --bg-grid: #16213e;
  --bg-rail: #070c16;
  --green: #39ff88;
  --purple: #b967ff;
  --gold: #ffd36e;
  --orange: #ffb26e;
  --text-main: #e8f1ff;
  --text-sub: #8a9bc7;
  --divider: #223054;
  --header-h: 60px;
  --rail-w: 260px;
  --content-max: 1200px;
  --font-head: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  --font-data: 'Roboto Mono', 'SFMono-Regular', 'JetBrains Mono', monospace;
  --font-body: 'Noto Serif SC', 'Source Han Serif SC', 'Georgia', serif;
}

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

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

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote,
dl,
dd { margin: 0; }

ul,
ol { padding: 0; list-style: none; }

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

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

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

/* ---------- 基础排版 ---------- */
html { scroll-behavior: smooth; }

body {
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--purple);
  color: #fff;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
}

main {
  min-height: 70vh;
}

main:focus { outline: none; }

@media (min-width: 1024px) {
  body { padding-left: var(--rail-w); }
}

/* ---------- 无障碍跳转 ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1000;
  padding: 12px 18px;
  background: var(--green);
  color: #03120a;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, .35);
  transition: top .2s ease;
}

.skip-link:focus-visible { top: 16px; }

/* ---------- 阅读进度线 ---------- */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--green) 0%, var(--purple) 60%, var(--gold) 100%);
  z-index: 300;
  pointer-events: none;
  opacity: 0;
}

.reading-progress[data-visible="true"] { opacity: .95; }

/* ---------- 头部：侧边轨道导航 ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 100;
  background: var(--bg-rail);
  border-right: 1px solid var(--divider);
}

.site-header__inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 22px 16px 18px;
  overflow-y: auto;
}

/* 品牌 */
.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 6px 16px;
  border-bottom: 1px dashed var(--divider);
}

.site-brand:hover { opacity: .86; }

.site-brand__mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--green);
  color: var(--green);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 26px;
  box-shadow: 0 0 16px rgba(57, 255, 136, .16);
  animation: markPulse 3.2s ease-in-out infinite;
}

@keyframes markPulse {
  0%, 100% { box-shadow: 0 0 12px rgba(57, 255, 136, .12); }
  50% { box-shadow: 0 0 28px rgba(57, 255, 136, .38); }
}

.site-brand:hover .site-brand__mark { animation-duration: 1.2s; }

.site-brand__text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.site-brand__text strong {
  font-family: var(--font-head);
  font-size: 19px;
  letter-spacing: .04em;
}

.site-brand__text small {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--text-sub);
  margin-top: 2px;
}

/* 导航轨道 */
.site-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 22px 0 10px;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.site-nav__item { list-style: none; }

.site-nav__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  border-left: 2px solid transparent;
  color: var(--text-sub);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.site-nav__index {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--green);
  opacity: .7;
  width: 20px;
}

.site-nav__label { flex: 1; letter-spacing: .04em; }

.site-nav__link:hover {
  color: var(--text-main);
  border-left-color: var(--purple);
  background: linear-gradient(90deg, rgba(185, 103, 255, .12), transparent 80%);
}

.site-nav__link[aria-current="page"] {
  color: var(--purple);
  border-left-color: var(--purple);
  background: linear-gradient(90deg, rgba(185, 103, 255, .16), transparent 85%);
}

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

.site-nav__meta {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.station-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--divider);
  background: rgba(10, 14, 26, .6);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-sub);
}

.station-dot {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  background: var(--green);
  box-shadow: 0 0 8px rgba(57, 255, 136, .8);
  animation: liveBlink 1.6s steps(2, start) infinite;
}

@keyframes liveBlink { 50% { opacity: .3; } }

.site-nav__live { display: none; }

/* 右上角 LIVE 比分牌 */
.site-live {
  position: fixed;
  top: 18px;
  right: 18px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: rgba(7, 11, 22, .9);
  border: 1px solid var(--divider);
  border-left: 3px solid var(--green);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .36);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-main);
  z-index: 130;
}

.site-live__tag {
  border: 1px solid rgba(57, 255, 136, .6);
  color: var(--green);
  font-weight: 700;
  font-size: 10px;
  letter-spacing: .18em;
  padding: 2px 5px;
  line-height: 1;
}

.site-live__text { color: #cfe0ff; white-space: nowrap; }

/* 移动导航按钮：桌面隐藏 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 6px;
}

.nav-toggle__box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.nav-toggle__box span {
  display: block;
  height: 2px;
  background: var(--green);
  transition: transform .25s ease, opacity .25s ease;
}

.nav-toggle__label {
  font-family: var(--font-head);
  font-size: 12px;
  color: var(--text-sub);
  letter-spacing: .08em;
}

/* ---------- 移动端头部：顶部栏 + 抽屉 ---------- */
@media (max-width: 1023px) {
  body { padding-left: 0; }
  body[data-lock] { overflow: hidden; }

  .site-header {
    width: auto;
    top: 0;
    right: 0;
    left: 0;
    bottom: auto;
    height: var(--header-h);
    background: rgba(10, 14, 26, .97);
    border-right: 0;
    border-bottom: 1px solid var(--divider);
    z-index: 200;
  }

  .site-header__inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
  }

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

  .site-header::after {
    content: "";
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: rgba(2, 4, 10, .55);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
    z-index: -1;
  }

  .site-header[data-open]::after {
    opacity: 1;
    visibility: visible;
  }

  .site-header[data-open] .nav-toggle__box span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .site-header[data-open] .nav-toggle__box span:nth-child(2) { opacity: 0; }
  .site-header[data-open] .nav-toggle__box span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .site-brand { border-bottom: 0; padding: 0; }
  .site-brand__text strong { font-size: 16px; }
  .site-brand__text small { display: none; }

  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    width: min(80vw, 320px);
    padding: 22px 16px 26px;
    background: var(--bg-card);
    border-right: 1px solid var(--divider);
    box-shadow: 16px 0 46px rgba(0, 0, 0, .4);
    transform: translateX(-104%);
    transition: transform .28s ease;
    overflow-y: auto;
    z-index: 210;
  }

  .site-nav__live {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-data);
    font-size: 12px;
    color: var(--text-sub);
  }

  .site-nav__live b {
    font-style: normal;
    font-weight: 700;
    font-size: 10px;
    letter-spacing: .12em;
    color: var(--green);
    border: 1px solid rgba(57, 255, 136, .5);
    padding: 2px 5px;
  }

  .site-live { display: none; }

  .reading-progress { top: var(--header-h); }
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 80px;
  background: linear-gradient(180deg, #0a0e1a 0%, #060a13 100%);
  border-top: 1px solid var(--divider);
}

.site-footer__inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 56px 24px 28px;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 44px;
}

.site-footer__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
}

.site-footer__brand .site-brand__mark {
  width: 38px;
  height: 38px;
  font-size: 20px;
  animation: none;
}

.site-footer__slogan {
  margin-top: 16px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  color: var(--gold);
}

.site-footer__desc {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-sub);
  max-width: 42em;
}

.site-footer__cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.site-footer__title {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--text-sub);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--divider);
  margin-bottom: 14px;
}

.site-footer__links,
.site-footer__meta {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.site-footer__links a {
  font-size: 14px;
  color: #b9c6e8;
  transition: color .15s ease;
}

.site-footer__links a:hover { color: var(--purple); }

.site-footer__meta {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-sub);
  line-height: 1.7;
}

.site-footer__bottom {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--divider);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-sub);
}

.site-footer__copyright { letter-spacing: .02em; }
.site-footer__icp { letter-spacing: .06em; }
.site-footer__brief { letter-spacing: .02em; }

@media (max-width: 880px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 36px;
    padding-top: 44px;
  }

  .site-footer__cols { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
  .site-footer__cols { grid-template-columns: 1fr; }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- 通用容器与章节 ---------- */
.container {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 20px;
}

.section { padding: 76px 0; }
.section--tight { padding: 44px 0; }

.section__head {
  margin-bottom: 28px;
}

.section__head--split {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.section__kicker {
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--green);
}

.section__title {
  font-family: var(--font-head);
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: 800;
  margin-top: 10px;
  letter-spacing: .02em;
}

.section__sub {
  margin-top: 12px;
  color: var(--text-sub);
  font-size: 15px;
  max-width: 58ch;
}

.note-v {
  writing-mode: vertical-rl;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--text-sub);
}

@media (max-width: 720px) {
  .section { padding: 48px 0; }
}

/* ---------- 响应式栅格 ---------- */
.grid { display: grid; gap: 20px; }

.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 980px) {
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 620px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
}

/* ---------- 直角数据卡片 ---------- */
.card {
  position: relative;
  padding: 22px;
  background: var(--bg-card);
  border: 1px solid var(--divider);
  transition: border-color .2s ease, transform .2s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 3px;
  background: var(--purple);
  opacity: 0;
  transition: opacity .2s ease;
}

.card:hover {
  border-color: rgba(185, 103, 255, .55);
  transform: translateY(-2px);
}

.card:hover::before { opacity: 1; }

.card__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
}

.card__num {
  font-family: var(--font-data);
  font-size: 26px;
  color: var(--green);
  line-height: 1.2;
}

.card__num--gold { color: var(--gold); }

.card__note {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 6px;
  line-height: 1.7;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border: 1px solid var(--divider);
  background: transparent;
  color: var(--text-main);
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  transition: border-color .2s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}

.btn:hover {
  border-color: var(--green);
  box-shadow: 0 0 22px rgba(57, 255, 136, .16);
}

.btn--primary {
  background: var(--green);
  border-color: var(--green);
  color: #04150b;
}

.btn--primary:hover {
  background: #7bffb4;
  border-color: #7bffb4;
  box-shadow: 0 0 30px rgba(57, 255, 136, .28);
}

.btn--ghost {
  border-color: var(--purple);
  color: var(--purple);
}

.btn--ghost:hover {
  background: rgba(185, 103, 255, .12);
  border-color: var(--purple);
}

/* ---------- 徽标 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--divider);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-sub);
  letter-spacing: .06em;
}

.badge--green {
  border-color: rgba(57, 255, 136, .45);
  color: var(--green);
}

.badge--gold {
  border-color: rgba(255, 211, 110, .45);
  color: var(--gold);
}

.badge--purple {
  border-color: rgba(185, 103, 255, .45);
  color: var(--purple);
}

.badge--orange {
  border-color: rgba(255, 178, 110, .45);
  color: var(--orange);
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 14px 0;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--text-sub);
}

.breadcrumb a { color: var(--text-sub); }
.breadcrumb a:hover { color: var(--purple); }
.breadcrumb__sep { color: var(--divider); }
.breadcrumb [aria-current="page"] { color: var(--gold); }

/* ---------- 图片容器基础规则 ---------- */
.img-frame {
  position: relative;
  min-height: 180px;
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--divider);
}

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

.img-frame__empty {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  padding: 24px;
  border: 1px dashed var(--divider);
  background-color: var(--bg-card);
  background-image:
    linear-gradient(45deg, var(--bg-grid) 25%, transparent 25%),
    linear-gradient(-45deg, var(--bg-grid) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--bg-grid) 75%),
    linear-gradient(-45deg, transparent 75%, var(--bg-grid) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  color: var(--text-sub);
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .22em;
}

/* ---------- 滚动显现协议 ---------- */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .6s ease, transform .6s ease;
}

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

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  html.js [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}