/* ===== 球速体育 · 共享站点样式 /assets/site.css ===== */

:root{
  --ink:#0B0F0E;
  --slate:#1C2422;
  --bone:#F4EFE2;
  --grid:#3A4642;
  --moss:#2F6B4F;
  --race:#17E88A;
  --volt:#2F7BFF;
  --signal:#6BB0FF;
  --acid:#E9FF45;
  --flame:#FF5A3C;
  --clay:#B76B4A;
  --mist:#AEB9B2;
  --on-race:#06120C;
  --on-acid:#101406;
  --on-volt:#04122B;

  --font-display:"Barlow Condensed","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --page-max:1280px;
  --pad:clamp(16px,4vw,48px);
  --gap:clamp(16px,2.2vw,28px);
  --radius:2px;
}

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

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

body{
  margin:0;
  background:var(--ink);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5{
  margin:0;
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.1;
  letter-spacing:.02em;
  text-wrap:balance;
}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

ul,ol{margin:0 0 1em;padding-left:1.2em;}
ul:last-child,ol:last-child{margin-bottom:0;}

a{color:var(--signal);text-decoration:none;}
a:hover{color:var(--race);}

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

button{font:inherit;color:inherit;}

:where(a,button,[tabindex]):focus-visible{
  outline:2px solid var(--acid);
  outline-offset:3px;
}

/* ---------- 布局工具 ---------- */
.wrap{
  width:100%;
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
}
.col-main{grid-column:1 / -1;min-width:0;}
.col-rail{grid-column:1 / -1;min-width:0;}
@media (min-width:900px){
  .col-main{grid-column:span 8;}
  .col-rail{grid-column:span 4;}
}

.stack{display:grid;gap:clamp(12px,1.6vw,20px);align-content:start;}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:.6em;}

.section{padding-block:clamp(32px,6vw,76px);}
.section--bone{background:var(--bone);color:var(--ink);}
.section--bone .kicker{color:var(--volt);}
.section--bone a{color:var(--volt);}
.section--bone .rule{background:rgba(11,15,14,.18);}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:var(--grid);
}

/* ---------- 文本组件 ---------- */
.kicker{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  margin:0 0 .9em;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--signal);
}
.kicker::before{
  content:"";
  width:28px;
  height:2px;
  background:var(--race);
  flex:none;
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:0;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.35em;
  padding:.18em .55em;
  border-radius:var(--radius);
  background:var(--moss);
  color:var(--bone);
  font-family:var(--font-display);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.04em;
  line-height:1.5;
  text-transform:uppercase;
}
.tag--acid{background:var(--acid);color:var(--on-acid);}
.tag--flame{background:var(--flame);color:#1A0502;}
.tag--volt{background:var(--volt);color:var(--on-volt);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.72em 1.15em;
  border:1px solid transparent;
  border-radius:var(--radius);
  background:transparent;
  color:var(--bone);
  font-family:var(--font-display);
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease,transform .16s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn--primary{background:var(--race);color:var(--on-race);}
.btn--primary:hover{background:var(--acid);color:var(--on-acid);}
.btn--ghost{border-color:var(--grid);color:var(--bone);}
.btn--ghost:hover{border-color:var(--race);color:var(--race);background:rgba(23,232,138,.08);}

/* ---------- 面板 / 目录组件 ---------- */
.panel{
  position:relative;
  background:var(--slate);
  border:1px solid var(--grid);
  padding:clamp(16px,2.4vw,26px);
}
.panel::before{
  content:"";
  position:absolute;
  top:-1px;
  left:-1px;
  width:38px;
  height:2px;
  background:var(--race);
}

.breadcrumbs{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5em;
  margin:0 0 1.2em;
  padding:0;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:.5em;}
.breadcrumbs li + li::before{
  content:"/";
  color:var(--grid);
}
.breadcrumbs a{color:var(--signal);}
.breadcrumbs a:hover{color:var(--race);text-decoration:underline;}

.prose{
  max-width:38em;
  font-size:1rem;
  line-height:1.8;
}
.prose > * + *{margin-top:1em;}
.prose h2{
  margin-top:1.8em;
  padding-top:.7em;
  border-top:1px solid var(--grid);
  font-size:clamp(1.35rem,2.4vw,1.8rem);
}
.prose h3{
  margin-top:1.5em;
  font-size:1.12rem;
  letter-spacing:.02em;
}
.prose ul,.prose ol{padding-left:1.25em;}
.prose li + li{margin-top:.4em;}
.prose blockquote{
  margin:1.4em 0;
  padding:.2em 0 .2em 1.1em;
  border-left:3px solid var(--race);
  color:var(--mist);
}
.prose code{
  font-family:var(--font-mono);
  font-size:.9em;
  padding:.1em .35em;
  background:rgba(47,123,255,.16);
  border-radius:var(--radius);
}
.prose a{text-decoration:underline;text-underline-offset:.22em;}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:var(--slate);
  border:1px solid var(--grid);
}
.media-frame > img,
.media-frame > picture,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--portrait{aspect-ratio:3 / 4;}
.media-frame--scan::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(0deg,rgba(11,15,14,.22) 0 1px,transparent 1px 4px);
  opacity:.55;
}

/* ============================================================
   头部：双层杂志报头 + 编号栏目流
   ============================================================ */
.skip-link{
  position:absolute;
  top:-120px;
  left:var(--pad);
  z-index:300;
  padding:.7em 1.1em;
  background:var(--acid);
  color:var(--on-acid);
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:top .16s ease;
}
.skip-link:focus{top:12px;color:var(--on-acid);}

.site-header{
  position:relative;
  z-index:70;
  background:var(--ink);
  border-bottom:1px solid var(--grid);
  font-family:var(--font-body);
}
@media (min-width:901px){
  .site-header{position:sticky;top:0;}
}

.masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(12px,2vw,28px);
  max-width:var(--page-max);
  margin-inline:auto;
  padding:clamp(10px,1.6vw,18px) var(--pad);
  border-bottom:1px solid rgba(58,70,66,.6);
}

.masthead-meta{
  display:flex;
  align-items:center;
  gap:.6em;
  margin:0;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mist);
}
.masthead-season{color:var(--acid);}

.live-dot{
  width:7px;
  height:7px;
  flex:none;
  border-radius:50%;
  background:var(--flame);
  box-shadow:0 0 0 3px rgba(255,90,60,.18);
}
@media (prefers-reduced-motion:no-preference){
  .live-dot{animation:live-pulse 2.4s ease-in-out infinite;}
}
@keyframes live-pulse{
  0%,100%{opacity:1;}
  50%{opacity:.3;}
}

.masthead-brand{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
  padding:.15em 1em;
  border-left:1px solid var(--grid);
  border-right:1px solid var(--grid);
  color:var(--bone);
  text-decoration:none;
}
.masthead-brand::before{
  content:"";
  position:absolute;
  left:-1px;
  right:-1px;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--race),var(--volt));
}
.masthead-brand:hover .brand-cn{color:var(--race);}
.brand-cn{
  font-family:var(--font-display);
  font-size:clamp(1.45rem,2.6vw,2rem);
  font-weight:700;
  line-height:1;
  letter-spacing:.08em;
  transition:color .16s ease;
}
.brand-tag{
  font-size:.66rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--mist);
}

.masthead-tools{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:.6em;
}

.nav-toggle,
.rail-toggle{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  padding:.55em .8em;
  border:1px solid var(--grid);
  border-radius:var(--radius);
  background:transparent;
  color:var(--bone);
  font-family:var(--font-display);
  font-size:.74rem;
  font-weight:600;
  letter-spacing:.1em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.nav-toggle:hover,
.rail-toggle:hover{border-color:var(--race);color:var(--race);}
.nav-toggle[aria-expanded="true"],
.rail-toggle[aria-expanded="true"]{
  background:var(--race);
  border-color:var(--race);
  color:var(--on-race);
}

.nav-toggle-bars,
.rail-toggle-bars{
  position:relative;
  display:block;
  width:14px;
  height:10px;
  flex:none;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after,
.rail-toggle-bars::before,
.rail-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:1.5px;
  background:currentColor;
  transition:transform .18s ease;
}
.nav-toggle-bars::before,
.rail-toggle-bars::before{top:0;}
.nav-toggle-bars::after,
.rail-toggle-bars::after{bottom:0;}

.site-nav{
  max-width:var(--page-max);
  margin-inline:auto;
  padding-inline:var(--pad);
}

.nav-list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  counter-reset:navidx;
}
.nav-list > li{
  border-left:1px solid rgba(58,70,66,.7);
}
.nav-list > li:last-child{
  border-right:1px solid rgba(58,70,66,.7);
}

.nav-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:.55em;
  padding:13px clamp(10px,1.6vw,20px);
  color:var(--bone);
  font-family:var(--font-display);
  font-size:.95rem;
  font-weight:600;
  letter-spacing:.04em;
  text-decoration:none;
  transition:color .16s ease,background-color .16s ease;
}
.nav-link::before{
  counter-increment:navidx;
  content:counter(navidx,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:.62rem;
  letter-spacing:0;
  color:var(--mist);
  transition:color .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--race);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover,
.nav-link:focus-visible{
  color:var(--race);
  background:rgba(23,232,138,.08);
}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{
  background:var(--race);
  color:var(--on-race);
}
.nav-link[aria-current="page"]::before{color:rgba(6,18,12,.6);}
.nav-link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--acid);
}

/* 速览轨道 */
.quick-rail{
  position:absolute;
  top:100%;
  right:var(--pad);
  z-index:90;
  width:min(330px,calc(100vw - 32px));
  padding:18px;
  background:var(--slate);
  border:1px solid var(--grid);
  border-top:2px solid var(--race);
  box-shadow:0 26px 52px rgba(0,0,0,.6);
}
.quick-rail[hidden]{display:none;}
.rail-title{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--acid);
}
.rail-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
}
.rail-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1em;
  padding:9px 12px;
  border-left:2px solid transparent;
  background:rgba(244,239,226,.04);
  color:var(--bone);
  font-size:.9rem;
  text-decoration:none;
  transition:background-color .16s ease,border-color .16s ease,color .16s ease;
}
.rail-link:hover,
.rail-link:focus-visible{
  background:rgba(47,123,255,.18);
  border-left-color:var(--volt);
  color:var(--signal);
}
.rail-meta{
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.1em;
  color:var(--mist);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(58,70,66,.55);
  overflow:hidden;
}
.scroll-progress-bar{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--race),var(--acid) 62%,var(--volt));
  transform:scaleX(0);
  transform-origin:0 50%;
}

@media (min-width:901px){
  .nav-toggle{display:none;}
}

@media (max-width:900px){
  .masthead{
    grid-template-columns:minmax(0,1fr) auto;
    gap:10px;
  }
  .masthead-meta{display:none;}
  .masthead-brand{
    align-items:flex-start;
    padding:0;
    border-left:0;
    border-right:0;
  }
  .masthead-brand::before{display:none;}
  .brand-tag{font-size:.6rem;letter-spacing:.16em;}

  .site-nav{
    display:none;
    padding-inline:0;
    border-top:1px solid rgba(58,70,66,.6);
  }
  .site-nav[data-open]{display:block;}
  .nav-list{
    flex-direction:column;
    justify-content:flex-start;
  }
  .nav-list > li{
    border-left:0;
    border-top:1px solid rgba(58,70,66,.5);
  }
  .nav-list > li:first-child{border-top:0;}
  .nav-list > li:last-child{border-right:0;}
  .nav-link{
    width:100%;
    padding:14px 20px;
    font-size:1rem;
  }
  .quick-rail{
    right:0;
    left:0;
    width:auto;
    border-left:0;
    border-right:0;
  }
}

/* ============================================================
   页脚：编辑部索引 + 联系信息块
   ============================================================ */
.site-footer{
  position:relative;
  background:var(--slate);
  color:var(--bone);
  border-top:1px solid var(--grid);
  font-size:.92rem;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:4px;
  background:
    linear-gradient(90deg,
      var(--race) 0 16%,
      var(--volt) 16% 32%,
      var(--acid) 32% 44%,
      var(--flame) 44% 52%,
      transparent 52%);
}

.footer-grid{
  max-width:var(--page-max);
  margin-inline:auto;
  padding:clamp(38px,6vw,68px) var(--pad) clamp(24px,4vw,40px);
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(24px,4vw,44px);
}
@media (min-width:620px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:980px){
  .footer-grid{grid-template-columns:1.5fr .75fr .8fr .75fr 1.2fr;}
}

.footer-brand{min-width:0;}
.footer-logo{
  margin:0 0 .3em;
  font-family:var(--font-display);
  font-size:1.6rem;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.1;
}
.footer-summary{
  margin:0 0 .8em;
  font-weight:500;
  color:var(--bone);
}
.footer-note{
  margin:0;
  max-width:34em;
  font-size:.84rem;
  line-height:1.7;
  color:var(--mist);
}

.footer-col{min-width:0;}
.footer-col-title{
  margin:0 0 .9em;
  padding-bottom:.6em;
  border-bottom:1px solid var(--grid);
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--acid);
}
.footer-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:.55em;
}
.footer-link{
  display:inline-flex;
  align-items:center;
  gap:.55em;
  color:var(--bone);
  font-size:.9rem;
  text-decoration:none;
  transition:color .16s ease;
}
.footer-link::before{
  content:"";
  width:8px;
  height:1px;
  flex:none;
  background:var(--grid);
  transition:background-color .16s ease,width .16s ease;
}
.footer-link:hover,
.footer-link:focus-visible{color:var(--race);}
.footer-link:hover::before,
.footer-link:focus-visible::before{
  width:15px;
  background:var(--race);
}

.footer-contact{
  display:grid;
  gap:.8em;
  align-content:start;
  min-width:0;
}
.contact-row{display:grid;gap:.1em;}
.contact-label{
  font-family:var(--font-mono);
  font-size:.65rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.contact-value{
  margin:0;
  font-size:.9rem;
  line-height:1.6;
  color:var(--bone);
  overflow-wrap:anywhere;
}

.footer-bottom{
  max-width:var(--page-max);
  margin-inline:auto;
  padding:16px var(--pad) 30px;
  border-top:1px solid var(--grid);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
}
.footer-legal{
  margin:0;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--mist);
}
.footer-meta{
  margin:0;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--mist);
}

.to-top{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:.5em .85em;
  border:1px solid var(--grid);
  border-radius:var(--radius);
  background:transparent;
  color:var(--bone);
  font-family:var(--font-display);
  font-size:.76rem;
  font-weight:600;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.to-top::after{content:"↑";font-family:var(--font-mono);}
.to-top:hover{
  border-color:var(--race);
  color:var(--on-race);
  background:var(--race);
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover{transform:none;}
}