/* ============================================================
   19体育主站 · 共享样式 /assets/site.css
   夜间球场灯光下的数据指挥中心
   ============================================================ */

:root{
  --night-base:#080D18;
  --pitch-shadow:#101A2C;
  --grid-line:#1E2C44;
  --cool-white:#E9EEF7;
  --mist-gray:#9AA8BF;
  --neon-green:#B8FF3D;
  --electric-orange:#FF6A1F;
  --paper-warm:#F3EADA;
  --deep-green:#1F7A4C;
  --alert-ruby:#FF4A5E;

  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", "Heiti SC", sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --header-h: 64px;
  --bar-h: 64px;
  --rail-w: 236px;
  --gut: clamp(16px, 4vw, 56px);
  --wrap-max: 1180px;
  --ease: cubic-bezier(.2,.7,.3,1);
}

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

html{
  -webkit-text-size-adjust:100%;
  background-color:var(--night-base);
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 20px);
}

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:clamp(15px, 1.02vw, 17px);
  line-height:1.75;
  font-weight:400;
  color:var(--cool-white);
  background-color:transparent;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  padding-bottom:calc(var(--bar-h) + env(safe-area-inset-bottom, 0px) + 12px);
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,pre{ margin:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
img,svg,video,canvas{ display:block; max-width:100%; }
a{ color:inherit; }
button{ font:inherit; color:inherit; }
table{ border-collapse:collapse; }
hr{ border:0; border-top:1px solid var(--grid-line); margin:0; }

/* ---------- 场地网格与光斑背景 ---------- */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(to right, rgba(30,44,68,.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,44,68,.30) 1px, transparent 1px),
    radial-gradient(70vw 55vw at 84% -12%, rgba(184,255,61,.075), transparent 62%),
    radial-gradient(58vw 46vw at -6% 104%, rgba(255,106,31,.065), transparent 62%);
  background-size:76px 76px, 76px 76px, 100% 100%, 100% 100%;
  -webkit-mask-image:radial-gradient(135% 105% at 58% 0%, #000 22%, transparent 92%);
  mask-image:radial-gradient(135% 105% at 58% 0%, #000 22%, transparent 92%);
}

/* ---------- 焦点可见 ---------- */
:focus{ outline:none; }
:focus-visible{
  outline:2px solid var(--neon-green);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 通用工具 ---------- */
.wrap{
  width:100%;
  max-width:calc(var(--wrap-max) + var(--gut) * 2);
  margin-inline:auto;
  padding-inline:var(--gut);
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
}

.label{
  display:inline-block;
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--neon-green);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.7em;
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--neon-green);
}
.eyebrow::before{
  content:"";
  width:28px;
  height:2px;
  background:var(--electric-orange);
  flex:0 0 auto;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72em 1.15em;
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:2px;
  background:transparent;
  cursor:pointer;
  transition:background-color .18s var(--ease), color .18s var(--ease),
             border-color .18s var(--ease), transform .18s var(--ease);
}
.btn:hover{ transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }

.btn--primary{
  background:var(--neon-green);
  color:#06120A;
  border-color:var(--neon-green);
}
.btn--primary:hover{ background:#d2ff8a; border-color:#d2ff8a; }

.btn--ghost{
  background:transparent;
  color:var(--cool-white);
  border-color:var(--grid-line);
}
.btn--ghost:hover{
  color:var(--neon-green);
  border-color:var(--neon-green);
}

.btn--warm{
  background:var(--electric-orange);
  color:#170800;
  border-color:var(--electric-orange);
}
.btn--warm:hover{ background:#ff8a52; border-color:#ff8a52; }

.btn--sm{ padding:.55em .85em; font-size:.78rem; }

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:999;
  padding:.72em 1.1em;
  background:var(--neon-green);
  color:#06120A;
  font-size:.84rem;
  font-weight:800;
  letter-spacing:.04em;
  text-decoration:none;
  border-radius:2px;
  transform:translateY(-220%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{ transform:translateY(0); }

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:130;
  background:rgba(30,44,68,.65);
  pointer-events:none;
}
.read-progress__bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg, var(--neon-green) 0%, var(--neon-green) 55%, var(--electric-orange) 100%);
  will-change:transform;
}

/* ============================================================
   头部
   ============================================================ */
.site-header{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:100;
  height:calc(var(--bar-h) + env(safe-area-inset-bottom, 0px));
  padding-bottom:env(safe-area-inset-bottom, 0px);
  background:rgba(8,13,24,.97);
  border-top:1px solid var(--grid-line);
  box-shadow:0 -20px 48px -30px rgba(0,0,0,.95);
}

.header__bar{
  display:flex;
  align-items:center;
  gap:12px;
  height:var(--bar-h);
  width:100%;
  max-width:calc(var(--wrap-max) + var(--gut) * 2);
  margin-inline:auto;
  padding-inline:var(--gut);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--cool-white);
}
.brand__mark{
  position:relative;
  width:28px;
  height:28px;
  flex:0 0 auto;
  background:var(--neon-green);
  clip-path:polygon(0 0, 100% 0, 100% 64%, 64% 100%, 0 100%);
}
.brand__mark::after{
  content:"19";
  position:absolute;
  inset:0;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:-.02em;
  color:#06120A;
}
.brand__text{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:1px;
  min-width:0;
}
.brand__line{
  font-size:.95rem;
  font-weight:800;
  letter-spacing:-.01em;
  line-height:1.15;
  white-space:nowrap;
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:8.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mist-gray);
  line-height:1.2;
  white-space:nowrap;
}

/* 状态胶囊 */
.status-chip{
  display:none;
  align-items:center;
  gap:8px;
  margin:0;
  padding:.4em .7em;
  border:1px solid var(--grid-line);
  border-radius:2px;
  background:rgba(16,26,44,.75);
  font-size:.74rem;
  letter-spacing:.04em;
  color:var(--mist-gray);
  white-space:nowrap;
}
.status-chip__dot{
  width:7px;
  height:7px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--neon-green);
  box-shadow:0 0 0 0 rgba(184,255,61,.55);
  animation:chip-pulse 2.6s var(--ease) infinite;
}
@keyframes chip-pulse{
  0%{ box-shadow:0 0 0 0 rgba(184,255,61,.5); }
  70%{ box-shadow:0 0 0 7px rgba(184,255,61,0); }
  100%{ box-shadow:0 0 0 0 rgba(184,255,61,0); }
}
.status-chip__text{ display:none; }
.status-chip__ver{
  color:var(--neon-green);
  font-size:.76rem;
  letter-spacing:.08em;
}
.status-chip__ver::before{
  content:"/";
  color:var(--grid-line);
  margin-right:.35em;
}

/* 头部动作区 */
.header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  flex:0 0 auto;
}
.header__cta{ display:none; }

/* 导航开关 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:.5em .7em;
  background:transparent;
  border:1px solid var(--grid-line);
  border-radius:2px;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--cool-white);
  cursor:pointer;
  transition:border-color .18s var(--ease), color .18s var(--ease);
}
.nav-toggle:hover{ border-color:var(--neon-green); color:var(--neon-green); }
.nav-toggle__bars{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  width:16px;
  height:14px;
  flex:0 0 auto;
}
.nav-toggle__bars i{
  display:block;
  height:2px;
  width:100%;
  background:var(--neon-green);
  transition:transform .22s var(--ease), width .22s var(--ease), opacity .18s var(--ease);
}
.nav-toggle__bars i:nth-child(2){ width:68%; }
.nav-toggle__text{ display:none; }

.site-header[data-open] .nav-toggle__bars i:nth-child(1){ transform:translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2){ opacity:0; width:0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3){ transform:translateY(-5px) rotate(-45deg); }

/* ---------- 导航索引面板 / 轨道 ---------- */
.site-nav{
  position:absolute;
  left:0;
  right:0;
  bottom:100%;
  max-height:min(74vh, 560px);
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
  padding:18px var(--gut) 22px;
  background:#060B13;
  border-top:1px solid var(--grid-line);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(16px);
  transition:transform .26s var(--ease), opacity .2s ease, visibility 0s linear .26s;
}
.site-header[data-open] .site-nav{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0);
  transition:transform .26s var(--ease), opacity .2s ease, visibility 0s;
}

.site-nav__title{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  margin-bottom:10px;
  border-bottom:1px solid var(--grid-line);
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--mist-gray);
}
.site-nav__title .num{ color:var(--electric-orange); font-size:.72rem; }

.site-nav__list{
  display:grid;
  grid-template-columns:1fr;
  gap:2px;
}

.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:.72em .6em;
  text-decoration:none;
  color:var(--cool-white);
  border-left:2px solid transparent;
  transition:background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.site-nav__link:hover{
  background:rgba(184,255,61,.07);
  color:var(--neon-green);
}
.site-nav__link[aria-current="page"]{
  background:rgba(184,255,61,.1);
  border-left-color:var(--neon-green);
  color:var(--neon-green);
}
.site-nav__index{
  font-size:.7rem;
  letter-spacing:.06em;
  color:var(--mist-gray);
  flex:0 0 auto;
}
.site-nav__link:hover .site-nav__index,
.site-nav__link[aria-current="page"] .site-nav__index{ color:var(--electric-orange); }
.site-nav__label{
  font-size:.95rem;
  font-weight:700;
  letter-spacing:.01em;
}

.site-nav__foot{
  margin-top:14px;
  padding-top:12px;
  border-top:1px solid var(--grid-line);
  font-size:11px;
  line-height:1.85;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist-gray);
}
.site-nav__foot .num{ color:var(--neon-green); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(56px, 9vw, 112px);
  background:#05090F;
  color:var(--cool-white);
  border-top:1px solid var(--grid-line);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg, var(--neon-green) 0 32%, var(--electric-orange) 32% 48%, var(--grid-line) 48% 100%);
}

.footer__inner{ padding-block:clamp(38px, 6vw, 74px); }

.footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:clamp(30px, 4vw, 56px);
  align-items:start;
}

.footer__brand{ display:flex; flex-direction:column; align-items:flex-start; gap:14px; }

.footer__wordmark{
  font-size:clamp(30px, 5vw, 54px);
  font-weight:900;
  letter-spacing:-.035em;
  line-height:.95;
  color:var(--cool-white);
}
.footer__wordmark span{ color:var(--neon-green); }

.footer__tag{
  max-width:30ch;
  font-size:.86rem;
  line-height:1.8;
  color:var(--mist-gray);
}

.footer__cols{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(132px, 1fr));
  gap:26px 20px;
}

.footer__col{ min-width:0; }

.footer__col-title{
  margin-bottom:14px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--neon-green);
}

.footer__links{ display:flex; flex-direction:column; gap:2px; }

.footer__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 0;
  font-size:.92rem;
  line-height:1.6;
  text-decoration:none;
  color:var(--cool-white);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease), border-color .18s var(--ease);
}
.footer__link::before{
  content:"";
  width:0;
  height:1px;
  background:var(--electric-orange);
  transition:width .2s var(--ease);
  flex:0 0 auto;
}
.footer__link:hover{
  color:var(--neon-green);
  border-bottom-color:rgba(184,255,61,.45);
}
.footer__link:hover::before{ width:14px; }

/* 暖纸色联系区块 */
.footer__contact{
  position:relative;
  background:var(--paper-warm);
  color:#10141C;
}
.footer__contact::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-26px;
  height:27px;
  background:var(--paper-warm);
  clip-path:polygon(0 100%, 100% 0, 100% 100%);
}

.footer__contact-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:26px 44px;
  padding-block:clamp(30px, 4.4vw, 48px) clamp(24px, 3.4vw, 38px);
}

.footer__contact-lead{ display:flex; flex-direction:column; align-items:flex-start; gap:12px; }

.footer__contact-kicker{
  font-size:11px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--deep-green);
}

.footer__contact-note{
  font-size:.85rem;
  line-height:1.8;
  color:#404A5C;
  max-width:34ch;
}

.footer__contact-cta{
  color:#10141C;
  border-color:rgba(16,20,28,.28);
}
.footer__contact-cta:hover{
  color:#06120A;
  border-color:var(--deep-green);
  background:rgba(31,122,76,.1);
}

.footer__contact-list{ display:grid; gap:0; }

.footer__contact-item{
  display:grid;
  grid-template-columns:5.6em minmax(0,1fr);
  gap:14px;
  align-items:baseline;
  padding-block:11px;
  border-bottom:1px solid rgba(8,13,24,.14);
}
.footer__contact-item:first-child{ border-top:1px solid rgba(8,13,24,.14); }

.footer__contact-key{
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#5C657A;
}

.footer__contact-val{
  font-family:var(--font-mono);
  font-size:.9rem;
  line-height:1.65;
  letter-spacing:.01em;
  color:#10141C;
  word-break:break-word;
}

.footer__legal{
  border-top:1px solid rgba(8,13,24,.14);
}
.footer__legal-inner{
  display:flex;
  flex-wrap:wrap;
  gap:6px 22px;
  align-items:baseline;
  justify-content:space-between;
  padding-block:14px 20px;
  font-size:12px;
  line-height:1.7;
  color:#4C5464;
}
.footer__legal-text{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  color:#39414F;
}
.footer__legal-note{ max-width:52ch; }

/* ============================================================
   图片容器基础规则（供页面阶段放置占位）
   ============================================================ */
.media{
  position:relative;
  overflow:hidden;
  isolation:isolate;
  aspect-ratio:16 / 9;
  border:1px solid var(--grid-line);
  border-radius:2px;
  background-color:var(--pitch-shadow);
  background-image:
    linear-gradient(135deg, rgba(184,255,61,.14), transparent 58%),
    repeating-linear-gradient(45deg, rgba(30,44,68,.85) 0 1px, transparent 1px 15px);
}
.media--tall{ aspect-ratio:3 / 4; }
.media--square{ aspect-ratio:1 / 1; }
.media--wide{ aspect-ratio:21 / 9; }

.media__img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media__caption{
  position:absolute;
  left:0;
  bottom:0;
  max-width:100%;
  padding:.55em .8em;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--cool-white);
  background:rgba(8,13,24,.82);
  border-top:1px solid var(--grid-line);
  border-right:1px solid var(--grid-line);
}

/* ============================================================
   显现协议
   ============================================================ */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s var(--ease), transform .5s var(--ease);
}
html.js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:480px){
  .status-chip{ display:inline-flex; }
  .site-nav__list{ grid-template-columns:1fr 1fr; }
}

@media (min-width:560px){
  .header__cta{ display:inline-flex; }
  .nav-toggle__text{ display:inline; }
}

@media (min-width:700px){
  .status-chip__text{ display:inline; }
  .footer__grid{ grid-template-columns:minmax(0,1fr) minmax(0,1.4fr); }
  .footer__contact-inner{ grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr); }
}

@media (min-width:780px){
  .site-nav__list{ grid-template-columns:1fr 1fr 1fr; }
}

@media (min-width:1024px){
  html{ scroll-padding-top:calc(var(--header-h) + 26px); }

  body{
    padding-bottom:0;
    padding-top:var(--header-h);
    padding-right:var(--rail-w);
  }

  .site-header{
    inset:0 var(--rail-w) auto 0;
    height:var(--header-h);
    padding-bottom:0;
    border-top:0;
    border-bottom:1px solid var(--grid-line);
    box-shadow:0 20px 48px -36px rgba(0,0,0,.95);
  }

  .header__bar{ height:var(--header-h); }

  .nav-toggle{ display:none; }

  .read-progress{ right:0; }

  .site-nav{
    position:absolute;
    top:0;
    left:100%;
    right:auto;
    bottom:auto;
    width:var(--rail-w);
    height:100vh;
    max-height:none;
    overflow-y:auto;
    display:flex;
    flex-direction:column;
    padding:calc(var(--header-h) + 16px) 16px 20px;
    background:linear-gradient(180deg, #060B13 0%, #04070C 100%);
    border-top:0;
    border-left:1px solid var(--grid-line);
    border-bottom:0;
    box-shadow:inset 1px 0 0 rgba(184,255,61,.06);
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
    transition:none;
  }

  .site-nav__list{
    grid-template-columns:1fr;
    gap:2px;
    flex:0 0 auto;
  }

  .site-nav__link{
    padding:.78em .5em .78em .8em;
    gap:12px;
  }
  .site-nav__link[aria-current="page"]{
    border-left-width:3px;
  }
  .site-nav__label{ font-size:.92rem; }

  .site-nav__foot{
    margin-top:auto;
    padding-top:16px;
  }

  .footer__contact::before{ top:-34px; height:35px; }
}

@media (min-width:1280px){
  .brand__line{ font-size:1rem; }
}

/* ============================================================
   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;
  }
  .status-chip__dot{ animation:none; }
  .btn:hover{ transform:none; }
  html.js [data-reveal],
  html.js [data-reveal].is-revealed{
    opacity:1;
    transform:none;
    transition:none;
  }
}