/* ============================================================
   必一体育主站 · 共享样式 /assets/site.css
   夜间体育数据控制室 + 赛刊纸卡叠层
   ============================================================ */

:root{
  --ink:#071C17;
  --carbon:#121715;
  --paper:#F2EFE6;
  --lime:#C8FF4D;
  --orange:#FF6B3A;
  --clay:#A4472D;
  --teal:#0E3B34;
  --wine:#5A1F2A;
  --indigo:#2B2440;
  --muted:#8B958D;
  --line:#2E3D36;

  --rail-w:104px;
  --bar-h:64px;
  --ease:cubic-bezier(.22,.61,.36,1);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

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

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scrollbar-color:var(--line) var(--ink);
}

body{
  margin:0;
  padding-left:var(--rail-w);
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  word-break:break-word;
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0}
img,svg,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.12;
  letter-spacing:.02em;
  text-wrap:balance;
}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:1px;
}

/* ---------- 通用工具 ---------- */
.visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.container{
  width:min(1180px, calc(100% - clamp(32px,6vw,72px)));
  margin-inline:auto;
}

.section{padding-block:clamp(48px,8vw,96px)}
.rule{height:1px;border:0;background:var(--line);margin:0}

.label{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--muted);
  text-transform:uppercase;
}
.label::before{
  content:"";
  width:18px;height:1px;
  background:var(--clay);
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}

.lead{
  font-size:clamp(17px,2.1vw,20px);
  line-height:1.7;
  color:var(--paper);
  max-width:56ch;
}

.tag{
  display:inline-block;
  font-size:11px;
  letter-spacing:.16em;
  line-height:1.4;
  padding:4px 9px;
  border:1px solid currentColor;
  border-radius:2px;
  text-transform:uppercase;
}

/* 面包屑 */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item a{text-decoration:none;border-bottom:1px solid transparent}
.breadcrumb__item a:hover{border-bottom-color:var(--lime);color:var(--lime)}
.breadcrumb__sep{color:var(--line)}

/* 网格 */
.grid{display:grid;gap:clamp(20px,3vw,40px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--asym{grid-template-columns:minmax(0,1.25fr) minmax(0,1fr)}

/* 纸卡 */
.paper-card{
  position:relative;
  background:var(--paper);
  color:var(--ink);
  border:1px solid #20302A;
  padding:clamp(20px,3vw,34px);
  box-shadow:7px 7px 0 var(--carbon);
}
.paper-card a{color:inherit}
.paper-card :focus-visible{outline-color:var(--clay)}
.paper-card .label{color:#4E5C55}
.paper-card .label::before{background:var(--clay)}

/* 关键数字 */
.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,6vw,64px);
  line-height:1;
  color:var(--lime);
  letter-spacing:-.02em;
}
.stat__label{
  font-size:11px;
  letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
}

/* 珠宝色分区 */
.jewel{
  padding:clamp(24px,4vw,48px);
  border:1px solid var(--line);
  background:var(--teal);
}
.jewel--wine{background:var(--wine)}
.jewel--indigo{background:var(--indigo)}
.jewel--clay{background:var(--clay)}
.jewel--carbon{background:var(--carbon)}

/* 图片容器（纯 CSS 赛场纹理占位） */
.media{
  position:relative;
  margin:0;
  border:1px solid var(--line);
  background:var(--carbon);
  overflow:hidden;
}
.media__frame{
  position:relative;
  aspect-ratio:4 / 3;
  overflow:hidden;
  background-color:var(--teal);
  background-image:
    repeating-linear-gradient(90deg, rgba(7,28,23,.42) 0 14px, rgba(7,28,23,0) 14px 28px),
    radial-gradient(120% 90% at 22% 0%, rgba(200,255,77,.18), transparent 62%),
    linear-gradient(160deg,#0E3B34 0%,#071C17 78%);
}
.media__frame::after{
  content:"";
  position:absolute;
  inset:10% 12%;
  border:1px solid rgba(242,239,230,.26);
  border-radius:2px;
  pointer-events:none;
}
.media__frame img,
.media__frame svg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--wide .media__frame{aspect-ratio:16 / 9}
.media--tall .media__frame{aspect-ratio:3 / 4}
.media__caption{
  display:flex;
  justify-content:space-between;
  gap:12px;
  padding:10px 12px;
  border-top:1px solid var(--line);
  background:rgba(7,28,23,.62);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:9px 16px;
  border:1px solid var(--line);
  border-radius:2px;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:500;
  letter-spacing:.06em;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--solid{
  background:var(--lime);
  border-color:var(--lime);
  color:var(--ink);
  font-weight:700;
}
.btn--solid:hover{background:var(--paper);border-color:var(--paper)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line)}
.btn--ghost:hover{color:var(--lime);border-color:var(--lime)}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:relative;
  z-index:30;
}

.skip-link{
  position:absolute;
  left:16px;
  top:-120px;
  z-index:200;
  padding:10px 18px;
  background:var(--lime);
  color:var(--ink);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  border-radius:2px;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

/* 左侧数据轨 */
.rail{
  position:fixed;
  left:0;
  top:0;
  bottom:0;
  z-index:60;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  gap:18px;
  padding:20px 0 18px;
  overflow-y:auto;
  background:linear-gradient(180deg,#0A2620 0%,var(--ink) 62%,#05130F 100%);
  border-right:1px solid var(--line);
}

.rail__brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:2px 8px;
  text-decoration:none;
  color:var(--paper);
}
.rail__mark{
  font-family:var(--font-display);
  font-weight:700;
  font-size:19px;
  line-height:1.15;
  letter-spacing:.08em;
}
.rail__rule{
  width:1px;
  height:26px;
  background:linear-gradient(180deg,var(--lime),transparent);
}
.rail__tag{
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:9.5px;
  letter-spacing:.24em;
  line-height:1;
  color:var(--muted);
}

.rail__nav{
  flex:1 1 auto;
  display:flex;
  align-items:center;
}
.rail__list{
  width:100%;
  display:flex;
  flex-direction:column;
  gap:2px;
  list-style:none;
}
.rail__link{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:11px 4px;
  border-left:2px solid transparent;
  color:var(--paper);
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.rail__index{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.1em;
  color:var(--muted);
}
.rail__label{
  font-size:12.5px;
  line-height:1.28;
  letter-spacing:.04em;
  text-align:center;
}
.rail__link:hover,
.rail__link:focus-visible{
  color:var(--lime);
  border-left-color:var(--clay);
  background-color:rgba(200,255,77,.06);
}
.rail__link[aria-current="page"]{
  color:var(--lime);
  border-left-color:var(--lime);
  background:linear-gradient(90deg,rgba(200,255,77,.16),rgba(200,255,77,0) 72%);
}
.rail__link[aria-current="page"] .rail__index{color:var(--lime)}

.rail__meta{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:9px;
  padding:8px 0 2px;
}
.rail__pulse{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--orange);
  animation:railPulse 2.6s ease-in-out infinite;
}
.rail__status{
  writing-mode:vertical-rl;
  font-size:9.5px;
  letter-spacing:.2em;
  line-height:1;
  color:var(--muted);
}
@keyframes railPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(255,107,58,.55)}
  50%{box-shadow:0 0 0 6px rgba(255,107,58,0)}
}

/* 顶部命令栏 */
.command-bar{
  position:sticky;
  top:0;
  z-index:40;
  height:var(--bar-h);
  background:rgba(7,28,23,.94);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.command-bar__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:100%;
  padding:0 clamp(16px,3vw,34px);
}
.command-bar__brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.command-bar__brand::before{
  content:"";
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(200,255,77,.16);
}
.command-bar__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.08em;
  white-space:nowrap;
}
.command-bar__tag{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
  white-space:nowrap;
  text-transform:uppercase;
}
.command-bar__actions{
  display:flex;
  align-items:center;
  gap:10px;
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:0 50%;
  will-change:transform;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  position:relative;
  width:42px;
  height:42px;
  padding:0;
  border:1px solid var(--line);
  border-radius:2px;
  background:transparent;
  cursor:pointer;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);background-color:rgba(200,255,77,.08)}
.nav-toggle__bars{
  position:absolute;
  left:50%;
  top:50%;
  width:18px;
  height:1.5px;
  background:var(--paper);
  transform:translate(-50%,-50%);
  transition:background-color .18s var(--ease);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:1.5px;
  background:var(--paper);
  transition:transform .2s var(--ease),top .2s var(--ease);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
[data-open="true"] .nav-toggle__bars{background:transparent}
[data-open="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg);background:var(--lime)}
[data-open="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg);background:var(--lime)}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  background:var(--carbon);
  color:var(--paper);
  border-top:1px solid var(--line);
}
.footer__stripe{
  height:6px;
  background:linear-gradient(90deg,
    var(--clay) 0 34%,
    var(--wine) 34% 62%,
    var(--indigo) 62% 84%,
    var(--teal) 84% 100%);
}
.footer__top{
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(0,1.6fr);
  gap:clamp(28px,5vw,72px);
  padding-top:clamp(40px,6vw,72px);
  padding-bottom:clamp(28px,4vw,52px);
}
.footer__brand{max-width:34ch}
.footer__wordmark{
  display:block;
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(28px,4vw,44px);
  line-height:1.1;
  letter-spacing:.04em;
  margin-bottom:14px;
}
.footer__tagline{
  font-size:13px;
  letter-spacing:.16em;
  color:var(--lime);
  margin-bottom:12px;
}
.footer__note{
  font-size:13px;
  line-height:1.7;
  color:var(--muted);
}
.footer__grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
.footer__heading{
  display:flex;
  align-items:center;
  gap:8px;
  margin:0 0 14px;
  font-family:var(--font-sans);
  font-size:11px;
  font-weight:500;
  letter-spacing:.18em;
  color:var(--muted);
  text-transform:uppercase;
}
.footer__heading::before{
  content:"";
  width:14px;height:1px;
  background:var(--clay);
}
.footer__links{list-style:none}
.footer__link{
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--paper);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer__link:hover,
.footer__link:focus-visible{color:var(--lime);border-bottom-color:var(--lime)}
.footer__link[aria-current="page"]{color:var(--lime);border-bottom-color:var(--lime)}

.footer__contact{list-style:none}
.footer__contact-row{
  display:flex;
  gap:10px;
  padding:7px 0;
  font-size:13.5px;
  line-height:1.6;
  border-bottom:1px dashed rgba(46,61,54,.9);
}
.footer__contact-key{
  flex:0 0 40px;
  padding-top:2px;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--muted);
}
.footer__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding:18px 0 26px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.footer__icp{
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:2px;
}
.footer__domain{color:var(--line)}
.footer__domain::before{content:"· ";color:var(--clay)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1023px){
  :root{--rail-w:0px;--bar-h:58px}

  body{padding-left:0}

  .rail{
    width:min(84vw,308px);
    gap:14px;
    padding:0 0 18px;
    transform:translateX(-101%);
    transition:transform .22s var(--ease);
    box-shadow:14px 0 44px rgba(0,0,0,.5);
  }
  .site-header[data-open="true"] .rail{transform:translateX(0)}
  .site-header[data-open="true"]::after{
    content:"";
    position:fixed;
    inset:0;
    z-index:55;
    background:rgba(7,28,23,.66);
    -webkit-backdrop-filter:blur(2px);
    backdrop-filter:blur(2px);
  }

  .rail__brand{
    flex-direction:row;
    align-items:center;
    gap:6px;
    padding:16px 20px;
    border-bottom:1px solid var(--line);
  }
  .rail__mark{font-size:17px}
  .rail__rule{
    width:22px;
    height:1px;
    background:linear-gradient(90deg,var(--lime),transparent);
  }
  .rail__tag{display:none}

  .rail__nav{align-items:flex-start;padding-top:8px}
  .rail__list{gap:0}
  .rail__link{
    flex-direction:row;
    align-items:center;
    justify-content:flex-start;
    gap:14px;
    width:100%;
    padding:14px 20px;
    text-align:left;
  }
  .rail__index{width:22px;font-size:10px;letter-spacing:.08em}
  .rail__label{font-size:15px;text-align:left}

  .rail__meta{
    flex-direction:row;
    align-items:center;
    justify-content:flex-start;
    gap:8px;
    margin-top:auto;
    padding:14px 20px 0;
    border-top:1px solid var(--line);
  }
  .rail__status{writing-mode:horizontal-tb;font-size:10px;letter-spacing:.16em}

  .nav-toggle{display:block}

  .footer__top{grid-template-columns:minmax(0,1fr)}
  .footer__brand{max-width:none}
}

@media (max-width:719px){
  body{font-size:16px}
  .command-bar__tag{display:none}
  .command-bar__actions .btn--ghost{display:none}
  .command-bar__actions .btn{padding:8px 13px;font-size:12.5px}

  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__col--contact{grid-column:1 / -1}
  .footer__bottom{justify-content:flex-start;gap:10px}
  .footer__domain{display:none}

  .grid--2,
  .grid--asym{grid-template-columns:minmax(0,1fr)}

  .paper-card{box-shadow:4px 4px 0 var(--carbon)}
}

@media (max-width:419px){
  .command-bar__name{font-size:14px}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .rail__pulse{animation:none;box-shadow:0 0 0 3px rgba(255,107,58,.18)}
  .rail{transition:none}
  .scroll-progress{transition:none}
}