/* ==========================================================================
   看台下单 · 共享样式 /assets/site.css
   夜场看台 · 左侧轨道导航 · 玻璃层与实色层并置
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --blue-900:#08101F;
  --blue-850:#0B1527;
  --blue-800:#0E1A33;
  --blue-700:#16264A;
  --blue-600:#1E3463;
  --signal:#3BF08C;
  --signal-deep:#1E9E5E;
  --amber:#FF8A3C;
  --amber-soft:#FFC28A;
  --metal:#93A1B8;
  --paper:#F3F7FC;

  --line:rgba(147,161,184,.22);
  --line-soft:rgba(147,161,184,.14);
  --line-strong:rgba(147,161,184,.4);
  --glass:rgba(30,52,99,.42);

  --rail-w:288px;
  --bar-h:56px;
  --strip-h:26px;
  --wrap:1120px;
  --r:3px;

  --font-display:"Arial Narrow","Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.22,.7,.28,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
a{color:var(--signal);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
main{display:block;min-height:40vh}
#main-content{display:block;outline:none}

/* ---------- 3. 中文排版与底色 ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--paper);
  background-color:var(--blue-900);
  background-image:
    radial-gradient(1100px 620px at 84% -14%, rgba(59,240,140,.10), transparent 62%),
    radial-gradient(820px 520px at 2% 0%, rgba(255,138,60,.09), transparent 58%),
    linear-gradient(180deg,#08101F 0%,#0A1424 54%,#08101F 100%);
  background-repeat:no-repeat;
  min-height:100vh;
  overflow-x:hidden;
}
::selection{background:var(--signal);color:#05160D}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.01em;
  color:#fff;
  margin-bottom:.5em;
}
h1{font-size:clamp(30px,5vw,46px)}
h2{font-size:clamp(24px,3.4vw,32px)}
h3{font-size:clamp(19px,2.2vw,22px);font-weight:600}
h4{font-size:17px;font-weight:600;letter-spacing:.01em}

p{margin-bottom:1.1em}
strong{font-weight:600;color:#fff}

.data{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:.88em;
  letter-spacing:.01em;
}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

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

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:12px;z-index:200;
  padding:10px 16px;border-radius:var(--r);
  background:var(--signal);color:#05160D;
  font-weight:600;font-size:14px;letter-spacing:.02em;
  transform:translateY(-180%);
  transition:transform .22s var(--ease);
}
.skip-link:focus-visible{transform:none;text-decoration:none}
@media (min-width:1024px){.skip-link{left:calc(var(--rail-w) + 14px)}}

/* ---------- 5. 品牌组 ---------- */
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--paper);text-decoration:none}
.brand:hover{text-decoration:none}
.brand__mark{
  position:relative;flex:0 0 auto;width:34px;height:36px;
  background:linear-gradient(155deg,var(--signal) 0%,var(--signal-deep) 100%);
  clip-path:polygon(0 0,100% 0,100% 62%,50% 100%,0 62%);
}
.brand__mark::before{
  content:"";position:absolute;inset:5px 5px 8px;
  background:var(--blue-900);
  clip-path:polygon(0 0,100% 0,100% 62%,50% 100%,0 62%);
}
.brand__mark::after{
  content:"";position:absolute;left:50%;top:13px;width:12px;height:3px;
  transform:translateX(-50%);background:var(--amber);
}
.brand__text{display:flex;flex-direction:column;gap:2px;line-height:1.15}
.brand__name{
  font-family:var(--font-display);font-weight:800;font-size:18px;
  letter-spacing:.04em;color:#fff;
}
.brand__tagline{
  display:none;
  font-family:var(--font-mono);font-size:10px;
  letter-spacing:.16em;color:var(--metal);
}

/* ---------- 6. 左侧看台轨道 ---------- */
.rail{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(8,16,31,.98),rgba(8,16,31,.92));
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.rail__inner{position:relative;display:block}

.rail__top{
  position:relative;z-index:2;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  height:var(--bar-h);padding:0 14px;
}

/* 移动抽屉按钮 */
.rail__toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 12px;border:1px solid var(--line-strong);border-radius:var(--r);
  color:var(--paper);font-size:13px;font-weight:600;letter-spacing:.06em;
  cursor:pointer;transition:border-color .2s,color .2s;
}
.rail__toggle:hover{border-color:var(--signal);color:var(--signal)}
.rail__toggle-bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:16px;height:12px}
.rail__toggle-bars span{display:block;height:2px;width:100%;background:currentColor;transition:transform .25s var(--ease)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:first-child{transform:translateY(3px) rotate(45deg)}
.rail__toggle[aria-expanded="true"] .rail__toggle-bars span:last-child{transform:translateY(-3px) rotate(-45deg)}
.rail__toggle-text{white-space:nowrap}

/* 比分条式赛程入口 */
.rail__strip{
  position:relative;z-index:2;
  display:flex;align-items:center;gap:9px;
  height:var(--strip-h);padding:0 14px;
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(90deg,rgba(255,138,60,.14),rgba(30,52,99,.34) 58%,rgba(59,240,140,.08));
  color:var(--amber-soft);
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.06em;
  text-decoration:none;transition:border-color .2s,color .2s;
}
.rail__strip:hover,.rail__strip:focus-visible{text-decoration:none;color:#fff;border-bottom-color:rgba(255,138,60,.5)}
.rail__signal{
  flex:0 0 auto;width:7px;height:7px;border-radius:50%;
  background:var(--signal);box-shadow:0 0 0 3px rgba(59,240,140,.16);
  animation:breathe 2.4s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{opacity:.55;transform:scale(.86)}
  50%{opacity:1;transform:scale(1)}
}
.rail__strip-text{flex:1 1 auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rail__strip-go{flex:0 0 auto;color:var(--amber)}

/* 主导航（移动端 = 抽屉） */
.rail__nav{
  position:fixed;top:0;left:0;bottom:0;z-index:1;
  display:flex;flex-direction:column;gap:4px;
  width:min(84vw,340px);
  padding:calc(var(--bar-h) + var(--strip-h) + 22px) 18px 26px;
  background:linear-gradient(180deg,#0E1A33 0%,#08101F 78%);
  border-right:1px solid rgba(59,240,140,.22);
  overflow-y:auto;overscroll-behavior:contain;
  transform:translateX(-104%);visibility:hidden;
  transition:transform .34s var(--ease),visibility .34s;
}
.rail__nav[data-open]{transform:none;visibility:visible}
.rail__nav:focus{outline:none}

.rail__nav-title{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;
  color:var(--metal);margin:0 0 12px;padding-left:12px;
}
.rail__nav-list{display:flex;flex-direction:column;gap:2px}
.rail__nav-item{display:block}

.rail__link{
  display:flex;align-items:center;gap:12px;
  padding:11px 10px 11px 12px;
  border-left:2px solid transparent;border-radius:0 var(--r) var(--r) 0;
  color:var(--paper);font-size:15px;font-weight:600;
  text-decoration:none;
  transition:background .18s,color .18s,border-color .18s;
}
.rail__link:hover{
  background:rgba(30,52,99,.55);
  border-left-color:rgba(59,240,140,.5);
  text-decoration:none;
}
.rail__link-num{
  font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:10.5px;letter-spacing:.08em;color:var(--metal);
  transition:color .18s;
}
.rail__link-label{flex:1 1 auto}
.rail__link[aria-current="page"]{
  background:linear-gradient(90deg,rgba(59,240,140,.16),rgba(59,240,140,0));
  border-left-color:var(--signal);color:#fff;
}
.rail__link[aria-current="page"] .rail__link-num{color:var(--signal)}

.rail__actions{
  display:flex;flex-direction:column;gap:8px;
  margin-top:auto;padding-top:22px;
}
.rail__actions .btn{width:100%}

/* 遮罩 */
.rail__scrim{
  position:fixed;inset:0;z-index:0;
  background:rgba(4,8,16,.72);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s;
}
.rail__nav[data-open] ~ .rail__scrim{opacity:1;visibility:visible}
body.is-nav-open{overflow:hidden}

/* 滚动进度线 */
.rail__progress{
  position:absolute;left:0;right:0;bottom:0;z-index:3;height:2px;
  background:rgba(147,161,184,.14);pointer-events:none;
}
.rail__progress span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--signal),var(--amber-soft));
  transition:width .12s linear;
}

/* ---------- 7. 桌面端轨道形态 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .rail{
    position:fixed;inset:0 auto 0 0;width:var(--rail-w);
    border-bottom:0;border-right:1px solid var(--line);
    background:linear-gradient(180deg,#0B1527 0%,#08101F 62%,#0A1526 100%);
  }
  .rail__inner{display:flex;flex-direction:column;height:100%;padding:26px 18px 18px}
  .rail__top{height:auto;padding:0;justify-content:flex-start}
  .brand__tagline{display:block}
  .rail__toggle{display:none}

  .rail__strip{
    height:auto;margin-top:16px;padding:9px 10px;
    border:1px solid var(--line);border-radius:var(--r);
    background:linear-gradient(120deg,rgba(255,138,60,.14),rgba(30,52,99,.36));
  }

  .rail__nav{
    position:static;z-index:auto;width:auto;flex:1 1 auto;min-height:0;
    padding:24px 0 0;margin-top:0;
    background:none;border-right:0;transform:none;visibility:visible;
    overflow-y:auto;transition:none;
  }
  .rail__nav-title{padding-left:12px}
  .rail__scrim{display:none}
  .rail__actions{padding-top:18px;border-top:1px solid var(--line-soft);margin-top:18px}
  .rail__progress{bottom:0}
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border:1px solid transparent;border-radius:var(--r);
  font-family:var(--font-body);font-size:14px;font-weight:600;line-height:1.25;
  letter-spacing:.02em;text-decoration:none;cursor:pointer;
  transition:background .2s,color .2s,border-color .2s,transform .2s var(--ease);
}
.btn:hover{text-decoration:none}
.btn:active{transform:translateY(1px)}
.btn--signal{
  background:rgba(59,240,140,.13);
  border-color:var(--signal);color:var(--signal);
}
.btn--signal:hover{background:var(--signal);color:#05160D;border-color:var(--signal)}
.btn--ghost{
  background:transparent;border-color:var(--line-strong);color:var(--paper);
}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber-soft);background:rgba(255,138,60,.08)}
.btn--sm{padding:8px 14px;font-size:13px}

/* ---------- 9. 布局基元 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:20px}
.section{padding:64px 0}
.section--tight{padding:40px 0}
@media (min-width:1024px){
  .section{padding:88px 0}
  .section--tight{padding:48px 0}
}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:var(--signal);margin:0 0 16px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--signal)}

.prose{max-width:68ch}
.prose p{margin:0 0 1.2em}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{margin-top:1.6em}
.prose ul,.prose ol{list-style:disc;padding-left:1.3em;margin:0 0 1.2em}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.4em}
.prose a{color:var(--signal);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(59,240,140,.45)}

.card{
  position:relative;
  background:linear-gradient(160deg,rgba(22,38,74,.94),rgba(14,26,51,.94));
  border:1px solid var(--line);border-radius:var(--r);
  padding:22px;
}
.card--glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-color:rgba(147,161,184,.28);
}

.grid{display:grid;gap:18px;grid-template-columns:1fr}
@media (min-width:720px){
  .grid--2,.grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
  .grid{gap:22px}
}

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

/* 面包屑 */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--metal);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:rgba(147,161,184,.45)}
.crumbs a{color:var(--metal);text-decoration:none}
.crumbs a:hover{color:var(--signal);text-decoration:none}
.crumbs [aria-current="page"]{color:var(--paper)}

/* 状态胶囊 */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line-strong);border-radius:999px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;
  color:var(--metal);background:rgba(14,26,51,.6);
}
.tag--signal{color:var(--signal);border-color:rgba(59,240,140,.5);background:rgba(59,240,140,.08)}
.tag--amber{color:var(--amber-soft);border-color:rgba(255,138,60,.45);background:rgba(255,138,60,.09)}

/* 响应式图片容器（页面阶段放图用） */
.media{
  position:relative;overflow:hidden;
  border:1px solid var(--line);border-radius:var(--r);
  background:linear-gradient(160deg,#16264A 0%,#0E1A33 60%,#0A1526 100%);
  aspect-ratio:16 / 9;
}
.media > img,
.media > video{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21 / 9}
.media--tall{aspect-ratio:4 / 5}
.media--square{aspect-ratio:1 / 1}
.media__badge{
  position:absolute;left:12px;top:12px;
  padding:3px 8px;border:1px solid var(--line);
  background:rgba(8,16,31,.78);color:var(--signal);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
}
.media__caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.03em;
  color:var(--metal);
}

/* ---------- 10. 滚动显现 ---------- */
[data-reveal]{
  transition:opacity .55s var(--ease),transform .55s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
[data-reveal].is-pending{opacity:0;transform:translateY(16px)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 11. 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:80px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0A1424 0%,#08101F 58%,#061020 100%);
}
.site-footer::before{
  content:"";position:absolute;left:-10%;right:-10%;top:-180px;height:320px;
  background:radial-gradient(620px 240px at 18% 0%,rgba(59,240,140,.10),transparent 70%),
             radial-gradient(520px 220px at 86% 10%,rgba(255,138,60,.08),transparent 72%);
  pointer-events:none;
}
.site-footer__inner{position:relative;max-width:var(--wrap);margin-inline:auto;padding:56px 20px 26px}
.site-footer__grid{display:grid;gap:34px;grid-template-columns:1fr}
@media (min-width:720px){
  .site-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:38px}
  .site-footer__brand{grid-column:1 / -1}
}
@media (min-width:1024px){
  .site-footer__grid{grid-template-columns:1.6fr .8fr .8fr .8fr 1.4fr;gap:32px}
  .site-footer__brand{grid-column:auto}
  .site-footer__inner{padding:64px 24px 28px}
}

.site-footer__brand{display:flex;flex-direction:column;gap:16px;align-items:flex-start}
.brand--footer .brand__name{font-size:16px}
.brand--footer .brand__mark{width:30px;height:32px}
.site-footer__summary{
  max-width:34ch;margin:0;
  font-size:14px;line-height:1.7;color:var(--metal);
}

.site-footer__col-title{
  display:flex;align-items:center;gap:8px;
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:10.5px;font-weight:600;
  letter-spacing:.2em;color:var(--metal);
}
.site-footer__col-title::before{
  content:"";width:6px;height:6px;background:var(--signal-deep);flex:0 0 auto;
}

.site-footer__list{display:flex;flex-direction:column;gap:10px}
.site-footer__link{
  display:inline-block;font-size:14.5px;color:var(--paper);
  text-decoration:none;border-bottom:1px solid transparent;
  transition:color .18s,border-color .18s;
}
.site-footer__link:hover,.site-footer__link:focus-visible{
  color:var(--signal);border-bottom-color:rgba(59,240,140,.5);text-decoration:none;
}

.site-footer__contact{display:flex;flex-direction:column;gap:9px}
.site-footer__contact-row{
  display:flex;gap:10px;align-items:baseline;
  margin:0;font-size:13.5px;line-height:1.6;color:var(--paper);
  word-break:break-word;
}
.site-footer__k{
  flex:0 0 40px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;
  color:var(--metal);
}

.site-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;margin-top:42px;padding-top:20px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:var(--metal);
}
.site-footer__legal{color:var(--metal);margin:0}
.site-footer__copy{color:var(--paper);margin:0}

/* ---------- 12. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .rail__signal{animation:none;opacity:1;transform:none}
  [data-reveal]{transition:none}
  [data-reveal].is-pending{opacity:1;transform:none}
  .rail__nav,.rail__scrim,.rail__toggle-bars span,.rail__progress span{transition:none}
  .btn:active{transform:none}
}