/* ==========================================================================
   江南体育 · 共享样式 /assets/site.css
   导航层 V4 · 折叠赛事地图长卷
   ========================================================================== */

:root{
  --qingdai:#0E2630;
  --qingdai-2:#16323D;
  --lake:#1E7188;
  --lake-soft:#D8ECEF;
  --paper:#F3EFE4;
  --paper-lift:#FAF7EE;
  --ink:#111C1F;
  --cyan:#2DF5D0;
  --gold:#E7B45E;
  --fog:#9FB2B5;
  --violet:#7C6CFF;

  --rail-w:288px;
  --maxw:1180px;
  --ease:cubic-bezier(.22,.72,.28,1);
  --shadow-card:0 1px 0 rgba(17,28,31,.05), 0 16px 30px -22px rgba(14,38,48,.6);

  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,"Courier New",monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth }
body,h1,h2,h3,h4,p,ul,ol,figure,dl,dd,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
main{display:block}
:where(a,button,[tabindex]):focus-visible{
  outline:2px solid var(--violet);
  outline-offset:2px;
  border-radius:1px;
}
:where(.site-header,.site-footer) :where(a,button):focus-visible{
  outline-color:var(--cyan);
  box-shadow:0 0 0 4px rgba(45,245,208,.22);
}

/* ---------- base typography ---------- */
body{
  background-color:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.015em;
  color:var(--ink);
}
h1{font-size:clamp(2.25rem,4.6vw,4.1rem);line-height:1.06;letter-spacing:-.025em}
h2{font-size:clamp(1.55rem,2.6vw,2.4rem)}
h3{font-size:clamp(1.15rem,1.7vw,1.5rem);line-height:1.3}
p{max-width:72ch}
::selection{background:var(--cyan);color:#052A26}

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

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:-80px;
  left:14px;
  z-index:400;
  padding:10px 16px;
  background:var(--cyan);
  color:#052A26;
  font-weight:800;
  font-size:.9rem;
  border-radius:2px;
  box-shadow:0 10px 24px -14px rgba(14,38,48,.9);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:14px}

/* ==========================================================================
   头部 · 双层信息导航
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  color:var(--paper);
  background-color:var(--qingdai);
  background-image:
    repeating-linear-gradient(90deg,rgba(159,178,181,.07) 0 1px,transparent 1px 64px),
    linear-gradient(180deg,rgba(30,113,136,.28),rgba(14,38,48,0) 55%);
  border-bottom:1px solid rgba(45,245,208,.22);
  box-shadow:0 14px 34px -26px rgba(14,38,48,.95);
}
.header-inner{
  display:flex;
  flex-direction:column;
  padding:10px 16px 0;
}
.header-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:10px;
}

/* 品牌 */
.brand-mark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand-glyph{
  flex:none;
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  background:var(--cyan);
  color:#062A26;
  font-family:var(--font-serif);
  font-weight:600;
  font-size:19px;
  line-height:1;
  border-radius:2px;
  box-shadow:0 0 0 1px rgba(45,245,208,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{
  font-size:1.06rem;
  font-weight:800;
  letter-spacing:.06em;
  color:#F6F3E9;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--fog);
}

/* 折叠开关 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:8px 11px;
  border:1px solid rgba(159,178,181,.5);
  border-radius:2px;
  color:#E6F1F0;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(45,245,208,.08)}
.nav-toggle-label{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
}
.nav-toggle-bars{position:relative;width:18px;height:10px;flex:none}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:var(--cyan);
  transition:transform .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-4px) rotate(-45deg)}

/* 抽屉面板 */
.header-panel{
  display:flex;
  flex-direction:column;
  gap:14px;
  max-height:0;
  overflow:hidden;
  visibility:hidden;
  transition:max-height .3s var(--ease),visibility 0s linear .3s;
}
.site-header[data-open] .header-panel{
  max-height:78vh;
  overflow-y:auto;
  visibility:visible;
  padding-bottom:14px;
  transition:max-height .3s var(--ease),visibility 0s;
}
.header-meta{
  display:flex;
  flex-direction:column;
  gap:10px;
  align-items:stretch;
}
.status-chip{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 10px;
  font-size:.76rem;
  line-height:1.5;
  letter-spacing:.02em;
  color:#CFE4E3;
  background:rgba(255,255,255,.04);
  border:1px solid rgba(159,178,181,.35);
  border-radius:2px;
  max-width:100%;
}
.status-dot{
  flex:none;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(45,245,208,.18);
}
.cta-subscribe{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:11px 16px;
  background:var(--cyan);
  color:#052A26;
  font-weight:800;
  font-size:.94rem;
  letter-spacing:.04em;
  border:1px solid rgba(5,42,38,.25);
  border-radius:2px;
  transition:filter .18s var(--ease),transform .18s var(--ease);
}
.cta-subscribe:hover{filter:brightness(1.08)}
.cta-subscribe:active{transform:translateY(1px)}
.cta-arrow{
  font-family:var(--font-mono);
  transition:transform .18s var(--ease);
}
.cta-subscribe:hover .cta-arrow{transform:translateX(3px)}

/* 导航列表 */
.site-nav{display:block}
.nav-list{display:flex;flex-direction:column}
.nav-item{border-top:1px solid rgba(159,178,181,.2)}
.nav-item:last-child{border-bottom:1px solid rgba(159,178,181,.2)}
.nav-link{
  display:grid;
  grid-template-columns:2.6em 1fr;
  align-items:center;
  gap:10px;
  padding:11px 6px;
  color:#DCE9E8;
  font-size:.95rem;
  font-weight:600;
  letter-spacing:.02em;
  transition:background-color .18s var(--ease),color .18s var(--ease),padding-left .18s var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{
  background:rgba(30,113,136,.34);
  color:#FFFFFF;
  padding-left:12px;
}
.nav-coord{
  font-size:.7rem;
  letter-spacing:.14em;
  color:var(--fog);
  transition:color .18s var(--ease);
}
.nav-link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(45,245,208,.08);
  box-shadow:inset 3px 0 0 var(--cyan);
}
.nav-link[aria-current="page"] .nav-coord{color:var(--cyan)}

/* 滚动进度 */
.rail-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(159,178,181,.2);
  pointer-events:none;
}
.rail-progress-bar{
  display:block;
  width:100%;height:100%;
  background:var(--cyan);
  transform:scaleX(var(--p,0));
  transform-origin:left center;
  transition:transform .1s linear;
}

/* ---------- 平板：横向双层条 ---------- */
@media (min-width:768px){
  .nav-toggle{display:none}
  .header-inner{
    width:100%;
    max-width:var(--maxw);
    margin-inline:auto;
    padding:14px 32px 0;
  }
  .header-top{padding-bottom:12px}
  .brand-name{font-size:1.12rem}
  .header-panel{
    max-height:none;
    visibility:visible;
    overflow:visible;
    gap:8px;
    transition:none;
  }
  .header-meta{
    flex-direction:row;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding-bottom:4px;
  }
  .cta-subscribe{padding:9px 14px}
  .nav-list{
    flex-direction:row;
    flex-wrap:wrap;
    gap:2px;
  }
  .nav-item{border-top:0}
  .nav-item:last-child{border-bottom:0}
  .nav-link{
    grid-template-columns:auto auto;
    gap:8px;
    padding:9px 12px;
    font-size:.86rem;
  }
  .nav-link:hover,.nav-link:focus-visible{padding-left:12px}
  .nav-link[aria-current="page"]{box-shadow:inset 0 -2px 0 var(--cyan)}
}

/* ---------- 桌面：固定左栏坐标导航 ---------- */
@media (min-width:1080px){
  body{padding-left:var(--rail-w)}
  .site-header{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--rail-w);
    border-bottom:0;
    border-right:1px solid rgba(45,245,208,.18);
    box-shadow:14px 0 44px -34px rgba(14,38,48,.95);
    overflow:hidden;
  }
  .header-inner{
    max-width:none;
    margin:0;
    height:100%;
    padding:30px 24px 26px;
    overflow-y:auto;
    display:flex;
    flex-direction:column;
    gap:0;
  }
  .header-top{padding-bottom:0}
  .header-panel{
    display:flex;
    flex-direction:column;
    flex:1 1 auto;
    gap:20px;
    overflow:visible;
  }
  .header-meta{
    flex-direction:column;
    align-items:stretch;
    gap:12px;
    padding-top:20px;
    margin-top:18px;
    border-top:1px solid rgba(159,178,181,.24);
  }
  .status-chip{align-self:stretch;justify-content:flex-start}
  .cta-subscribe{justify-content:space-between}
  .site-nav{margin-top:auto;padding-top:20px;border-top:1px solid rgba(159,178,181,.24)}
  .nav-list{flex-direction:column;gap:0}
  .nav-item{border-top:1px solid rgba(159,178,181,.16)}
  .nav-link{grid-template-columns:2.8em 1fr;padding:12px 8px;font-size:.92rem}
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--cyan)}
  .rail-progress{left:auto;right:0;top:0;bottom:0;width:3px;height:auto}
  .rail-progress-bar{transform:scaleY(var(--p,0));transform-origin:center top}
}

/* ==========================================================================
   页脚 · 长卷收束
   ========================================================================== */
.site-footer{
  position:relative;
  color:#DDE9E8;
  background-color:var(--qingdai);
  background-image:
    repeating-linear-gradient(90deg,rgba(159,178,181,.06) 0 1px,transparent 1px 72px),
    linear-gradient(180deg,rgba(30,113,136,.24),rgba(14,38,48,0) 46%);
  border-top:1px solid rgba(45,245,208,.24);
}
.footer-inner{
  display:grid;
  gap:34px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:44px 20px 0;
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-eyebrow{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gold);
  padding-bottom:10px;
  border-bottom:1px solid rgba(231,180,94,.4);
  width:100%;
}
.footer-title{
  margin-top:16px;
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(1.3rem,2vw,1.7rem);
  line-height:1.4;
  color:#F6F3E9;
  max-width:22ch;
}
.footer-note{
  margin-top:10px;
  font-size:.86rem;
  line-height:1.7;
  color:#A9C0C2;
  max-width:34ch;
}
.footer-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:20px;
  padding:10px 18px;
  border:1px solid var(--cyan);
  border-radius:2px;
  color:var(--cyan);
  font-weight:800;
  font-size:.9rem;
  letter-spacing:.04em;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.footer-cta:hover{background:var(--cyan);color:#052A26}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:26px 20px;
}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:.7rem;
  font-weight:500;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--gold);
  padding-bottom:9px;
  margin-bottom:12px;
  border-bottom:1px solid rgba(231,180,94,.34);
}
.footer-list{display:flex;flex-direction:column;gap:2px}
.footer-link{
  display:inline-block;
  padding:3px 0;
  font-size:.9rem;
  color:#CFE0DF;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--cyan);
  border-bottom-color:rgba(45,245,208,.55);
}

.footer-contact{
  grid-column:1 / -1;
  display:grid;
  gap:16px;
  padding:22px 0;
  border-top:1px solid rgba(159,178,181,.28);
  border-bottom:1px solid rgba(159,178,181,.28);
}
.footer-contact-item{display:flex;flex-direction:column;gap:5px;min-width:0}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--fog);
}
.footer-contact-value{
  font-size:.92rem;
  line-height:1.6;
  color:#EAF3F2;
  overflow-wrap:anywhere;
}
.footer-contact-value a{
  color:var(--cyan);
  border-bottom:1px solid rgba(45,245,208,.35);
}
.footer-contact-value a:hover{border-bottom-color:var(--cyan)}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 18px;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:18px 20px 30px;
}
.footer-legal-text{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.04em;
  color:var(--fog);
  max-width:none;
}

@media (min-width:640px){
  .footer-contact{grid-template-columns:repeat(3,1fr);gap:0}
  .footer-contact-item+.footer-contact-item{
    padding-left:22px;
    border-left:1px solid rgba(159,178,181,.22);
  }
}
@media (min-width:1024px){
  .footer-inner{
    grid-template-columns:minmax(0,.85fr) minmax(0,1.55fr);
    gap:48px;
    padding:56px 32px 0;
  }
  .footer-legal{padding:20px 32px 36px}
}

/* ==========================================================================
   通用组件（页面阶段复用）
   ========================================================================== */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:20px;
}
@media (min-width:768px){ .container{padding-inline:32px} }

.grid-12{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
@media (min-width:768px){
  .grid-12{grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
}

.card{
  position:relative;
  background:var(--paper-lift);
  border:1px solid rgba(159,178,181,.55);
  border-radius:2px;
  padding:22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.card:hover{
  transform:translateY(-2px);
  border-color:var(--lake);
  box-shadow:0 1px 0 rgba(17,28,31,.05),0 22px 36px -24px rgba(14,38,48,.65);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  line-height:1.5;
  color:var(--lake);
  border:1px solid rgba(30,113,136,.5);
  border-radius:2px;
  background:rgba(216,236,239,.55);
}
.tag-gold{
  color:#7A5111;
  border-color:rgba(231,180,94,.9);
  background:rgba(231,180,94,.2);
}
.tag-cyan{
  color:var(--cyan);
  border-color:rgba(45,245,208,.7);
  background:rgba(45,245,208,.1);
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.68em 1.15em;
  font-size:.94rem;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.3;
  border:1px solid transparent;
  border-radius:2px;
  transition:filter .18s var(--ease),transform .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-primary{
  background:var(--cyan);
  color:#052A26;
  border-color:rgba(5,42,38,.25);
}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{
  background:transparent;
  color:var(--qingdai);
  border-color:rgba(30,113,136,.55);
}
.btn-ghost:hover{background:var(--lake-soft);border-color:var(--lake)}

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  color:#4A6065;
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li+li::before{content:"/";color:var(--fog)}
.breadcrumbs a{
  color:var(--lake);
  border-bottom:1px solid rgba(30,113,136,.32);
}
.breadcrumbs a:hover{border-bottom-color:var(--lake)}

.lede{
  font-family:var(--font-serif);
  font-weight:600;
  font-size:clamp(1.02rem,1.4vw,1.22rem);
  line-height:1.9;
  color:#233A3F;
  max-width:62ch;
}

.section-band{
  display:flex;
  align-items:center;
  gap:12px;
  padding:8px 12px;
  background:var(--lake-soft);
  border-left:4px solid var(--lake);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:#0B3A47;
}
.section-band--dark{
  background:var(--qingdai);
  color:var(--cyan);
  border-left-color:var(--cyan);
}

.coord{
  display:inline-block;
  padding:2px 7px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  color:var(--lake);
  border:1px solid rgba(30,113,136,.45);
  border-radius:2px;
  background:rgba(216,236,239,.5);
}

.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border:1px solid rgba(159,178,181,.55);
  border-radius:2px;
  background:
    linear-gradient(140deg,rgba(216,236,239,.95),rgba(243,239,228,.6) 58%,rgba(30,113,136,.22)),
    var(--paper);
  box-shadow:var(--shadow-card);
}
.media-frame img,
.media-frame svg{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(159,178,181,.45);
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:3 / 4}
.figure-cap{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:#5A6E72;
}

.divider{
  height:1px;
  border:0;
  margin:32px 0;
  background:linear-gradient(90deg,rgba(30,113,136,.55),rgba(159,178,181,.25) 45%,transparent);
}

/* ==========================================================================
   无障碍与动效降级
   ========================================================================== */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0s !important;
  }
  .card:hover{transform:none}
  .cta-subscribe:active{transform:none}
  .cta-subscribe:hover .cta-arrow{transform:none}
}