/* ==========================================================================
   凤凰体育 · 共享站点样式  /assets/site.css
   深空黑底 · 侧边品牌轨道 · 赛事数据仪表盘
   ========================================================================== */

/* ---------- 0. 设计令牌 ---------- */
:root{
  --ink-900:#0A0D12;
  --ink-800:#141922;
  --line:#2A3548;
  --mute:#8A94A6;
  --text:#E8ECF2;
  --brand:#FF5A1F;
  --brand-soft:#FF8A3D;
  --aqua:#00D8B4;
  --lime:#E6FF3D;
  --violet:#7B61FF;
  --paper:#F5F7FA;
  --brown:#3A1A0C;

  --rail:84px;
  --bar:68px;
  --shell:1320px;
  --gutter:clamp(18px,3.6vw,48px);

  --font-head:"PingFang SC","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-body:"Inter","PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-num:ui-monospace,"JetBrains Mono","SFMono-Regular","DIN Condensed",Consolas,"Courier New",monospace;

  --ease:cubic-bezier(.2,.72,.2,1);
}

@media (max-width:900px){
  :root{ --rail:0px; --bar:60px; }
}

/* ---------- 1. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}

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

body{
  margin:0;
  background:var(--ink-900);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
::selection{background:var(--brand);color:#0A0D12}

/* ---------- 2. 中文排版 ---------- */
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-head);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.015em;
}
h1{font-size:clamp(38px,6.4vw,92px)}
h2{font-size:clamp(28px,4.2vw,48px)}
h3{font-size:clamp(20px,2.4vw,28px);line-height:1.28}
h4{font-size:18px;line-height:1.4}

.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.lead{font-size:clamp(17px,1.4vw,20px);line-height:1.75;color:#C6CFDC}
.muted{color:var(--mute)}

.vert-note{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-size:11px;
  letter-spacing:.32em;
  color:var(--mute);
  text-transform:uppercase;
}

/* ---------- 3. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:calc(var(--rail) + 12px);
  z-index:300;
  padding:10px 16px;
  background:var(--lime);
  color:#0A0D12;
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  transform:translateY(-200%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 4. 布局骨架 ---------- */
main{
  display:block;
  padding-left:var(--rail);
  padding-top:var(--bar);
  min-height:64vh;
}

.container{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
}
.container--narrow{max-width:840px}
.container--wide{max-width:1560px}

.section{
  position:relative;
  padding:clamp(64px,8.5vw,128px) 0;
  border-top:1px solid var(--line);
}
.section--flush{border-top:0}
.section--tight{padding:clamp(38px,5vw,64px) 0}
.section--panel{background:var(--ink-800)}
.section--paper{background:var(--paper);color:#0A0D12}
.section--paper .muted,
.section--paper .vert-note,
.section--paper .section__sub{color:#5A6472}

.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:clamp(16px,3vw,48px);
  margin-bottom:clamp(28px,4vw,56px);
}
.section__title{font-size:clamp(28px,4.2vw,48px)}
.section__sub{margin-top:14px;max-width:62ch;font-size:15px;line-height:1.8;color:var(--mute)}

.grid{display:grid;gap:clamp(16px,2.2vw,32px)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}

@media (max-width:1080px){
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4{grid-column:span 3}
  .span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 6}
}
@media (max-width:640px){
  .grid--12{grid-template-columns:1fr}
  .grid--12 > *{grid-column:1 / -1}
}

/* ---------- 5. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:12px 22px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--text);
  font-family:var(--font-head);
  font-weight:700;
  font-size:13.5px;
  letter-spacing:.1em;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.btn:hover{transform:translateX(2px)}
.btn--primary{background:var(--brand);border-color:var(--brand);color:#0A0D12}
.btn--primary:hover{background:var(--brand-soft);border-color:var(--brand-soft)}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand)}
.btn--data{border-color:rgba(0,216,180,.6);color:var(--aqua)}
.btn--data:hover{background:rgba(0,216,180,.12)}
.btn--block{width:100%}

/* ---------- 6. 头部外壳 ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:80;
  display:flex;
  align-items:stretch;
  height:var(--bar);
  padding-left:var(--rail);
  background:linear-gradient(90deg,rgba(20,25,34,.97),rgba(10,13,18,.92));
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}

.brand-rail{
  position:fixed;
  top:0;
  left:0;
  bottom:0;
  z-index:90;
  width:var(--rail);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:space-between;
  padding:20px 0 24px;
  background:var(--ink-800);
  border-right:1px solid var(--line);
}

.brand-rail__mark{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:14px;
}
.brand-rail__glyph{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  background:var(--brand);
  color:#0A0D12;
  font-family:var(--font-head);
  font-weight:900;
  font-size:17px;
}
.brand-rail__name{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-head);
  font-weight:900;
  font-size:17px;
  letter-spacing:.3em;
  color:var(--text);
}

.brand-rail__modes{display:flex;flex-direction:column;align-items:center;gap:8px}
.mode-switch{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  padding:8px 3px;
  font-size:11px;
  letter-spacing:.28em;
  color:var(--mute);
  border:1px solid transparent;
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.mode-switch:hover{color:var(--text);border-color:var(--line)}
.mode-switch.is-active{color:var(--brand);border-color:var(--brand)}

.brand-rail__foot{display:flex;flex-direction:column;align-items:center;gap:16px}
.rail-progress{position:relative;width:2px;height:110px;background:var(--line);overflow:hidden}
.rail-progress__fill{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:0;
  background:linear-gradient(180deg,var(--brand),var(--lime));
}
.rail-top{
  writing-mode:vertical-rl;
  padding:7px 4px;
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--mute);
  border:1px solid var(--line);
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.rail-top[data-visible]{color:var(--lime);border-color:var(--lime)}
.rail-top:hover{color:var(--lime);border-color:var(--lime)}

.header-bar{
  flex:1 1 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(14px,3vw,40px);
  padding:0 var(--gutter);
  min-width:0;
}
.header-bar__lead{display:flex;align-items:baseline;gap:14px;min-width:0}
.header-bar__domain{
  font-family:var(--font-num);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--text);
  white-space:nowrap;
}
.header-bar__note{
  font-size:11px;
  letter-spacing:.2em;
  color:var(--mute);
  white-space:nowrap;
}
.header-bar__note::before{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  margin-right:8px;
  background:var(--aqua);
  vertical-align:middle;
}

.site-nav{display:flex;align-items:center;gap:clamp(12px,2.4vw,34px);min-width:0}
.site-nav__list{display:flex;align-items:center;gap:clamp(10px,1.7vw,26px)}
.site-nav__list a{
  position:relative;
  display:block;
  padding:9px 2px;
  font-size:14.5px;
  letter-spacing:.07em;
  color:var(--mute);
  transition:color .25s var(--ease);
}
.site-nav__list a::after{
  content:"";
  position:absolute;
  left:0;
  right:100%;
  bottom:2px;
  height:2px;
  background:var(--brand);
  transition:right .32s var(--ease);
}
.site-nav__list a:hover{color:var(--text)}
.site-nav__list a:hover::after{right:0}
.site-nav__list a[aria-current="page"]{color:var(--text);font-weight:700}
.site-nav__list a[aria-current="page"]::after{right:0;background:var(--lime)}
.site-nav__cta{flex:0 0 auto}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 12px;
  border:1px solid var(--line);
  color:var(--mute);
  font-size:11px;
  letter-spacing:.22em;
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.nav-toggle:hover{color:var(--text);border-color:var(--brand)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars i{
  display:block;
  height:1.5px;
  background:var(--brand);
  transition:transform .3s var(--ease),opacity .3s var(--ease);
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

@media (max-width:900px){
  .site-header{padding-left:0;background:rgba(10,13,18,.96)}

  .brand-rail{
    position:static;
    flex:0 0 auto;
    width:auto;
    height:var(--bar);
    flex-direction:row;
    align-items:center;
    gap:12px;
    padding:0 4px 0 14px;
    background:transparent;
    border-right:0;
  }
  .brand-rail__mark{flex-direction:row;gap:8px}
  .brand-rail__glyph{width:26px;height:26px;font-size:13px}
  .brand-rail__name{writing-mode:horizontal-tb;font-size:13px;letter-spacing:.14em}
  .brand-rail__modes{flex-direction:row;gap:4px}
  .mode-switch{writing-mode:horizontal-tb;padding:5px 7px;font-size:10.5px;letter-spacing:.1em}
  .brand-rail__foot{display:none}

  .header-bar__lead{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    top:var(--bar);
    left:0;
    right:0;
    bottom:0;
    z-index:75;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:26px var(--gutter) 48px;
    background:linear-gradient(180deg,var(--ink-800),var(--ink-900) 72%);
    border-top:1px solid var(--line);
    overflow-y:auto;
    visibility:hidden;
    transform:translateX(100%);
    transition:transform .38s var(--ease),visibility 0s linear .38s;
  }
  .site-header[data-open] .site-nav{
    visibility:visible;
    transform:translateX(0);
    transition:transform .38s var(--ease),visibility 0s;
  }
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .site-nav__list li{border-bottom:1px solid var(--line)}
  .site-nav__list a{
    padding:18px 4px;
    font-family:var(--font-head);
    font-weight:900;
    font-size:21px;
    letter-spacing:.04em;
    color:var(--text);
  }
  .site-nav__list a::after{display:none}
  .site-nav__list a[aria-current="page"]{color:var(--brand)}
  .site-nav__cta{margin-top:28px;width:100%}
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-left:var(--rail);
  overflow:hidden;
  padding-top:clamp(48px,7vw,96px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#0A0D12 0%,#141922 62%,#1B1512 100%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  right:0;
  width:min(48vw,640px);
  height:100%;
  background:linear-gradient(215deg,rgba(255,90,31,.2),rgba(123,97,255,.08) 46%,transparent 72%);
  clip-path:polygon(34% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,var(--brand),var(--violet) 34%,transparent 74%);
}
.site-footer > *{position:relative;z-index:1}

.site-footer__grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1.1fr;
  gap:clamp(26px,4vw,60px);
  padding-bottom:clamp(34px,5vw,60px);
}
.site-footer__logo{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(26px,3.2vw,40px);
  letter-spacing:.06em;
  color:var(--text);
}
.site-footer__desc{margin-top:16px;max-width:42ch;font-size:14px;line-height:1.8;color:var(--mute)}
.site-footer__meta{margin-top:18px;font-family:var(--font-num);font-size:11px;letter-spacing:.2em;color:#5D677A}

.site-footer__label{
  margin-bottom:18px;
  font-size:11px;
  letter-spacing:.3em;
  color:var(--brand);
}
.site-footer__list{display:flex;flex-direction:column;gap:10px}
.site-footer__list a{
  font-size:14px;
  color:#B9C3D1;
  transition:color .25s var(--ease),letter-spacing .25s var(--ease);
}
.site-footer__list a:hover{color:var(--brand);letter-spacing:.06em}

.site-footer__contact{display:flex;flex-direction:column;align-items:flex-start;gap:14px}
.copy-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:3px 0;
  border-bottom:1px dashed var(--line);
  font-family:var(--font-num);
  font-size:13.5px;
  color:var(--text);
  transition:color .25s var(--ease),border-color .25s var(--ease);
}
.copy-chip:hover{color:var(--brand);border-color:var(--brand)}
.copy-chip[data-copied]{color:var(--aqua);border-color:var(--aqua)}
.copy-chip[data-copied]::after{content:"已复制";margin-left:4px;font-size:10px;letter-spacing:.16em}
.site-footer__addr{max-width:30ch;font-size:13px;line-height:1.8;color:var(--mute)}
.site-footer__hint{font-size:11.5px;letter-spacing:.08em;color:#5D677A}

.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:clamp(10px,2vw,26px);
  border-top:1px solid var(--line);
  padding-top:22px;
  padding-bottom:30px;
  font-size:12px;
  color:var(--mute);
}
.site-footer__links{display:flex;flex-wrap:wrap;gap:22px}
.site-footer__links a{color:var(--mute);transition:color .25s var(--ease)}
.site-footer__links a:hover{color:var(--lime)}

@media (max-width:900px){
  .site-footer{margin-left:0}
  .site-footer__grid{grid-template-columns:1fr;gap:34px}
}

/* ---------- 8. 通用内容组件 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.6vw,30px);
  background:var(--ink-800);
  border:1px solid var(--line);
}
.panel--accent{border-left:3px solid var(--brand)}
.panel--grid{
  background-image:
    linear-gradient(to right,rgba(42,53,72,.42) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,53,72,.42) 1px,transparent 1px);
  background-size:56px 56px;
}

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

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line);
  font-size:10.5px;
  letter-spacing:.18em;
  color:var(--mute);
  white-space:nowrap;
}
.tag--live{border-color:var(--brand);color:var(--brand)}
.tag--data{border-color:rgba(0,216,180,.55);color:var(--aqua)}
.tag--round{border-color:rgba(123,97,255,.55);color:var(--violet)}

.metric{display:flex;flex-direction:column;gap:6px}
.metric__value{
  font-family:var(--font-num);
  font-size:clamp(30px,3.6vw,46px);
  font-weight:700;
  line-height:1;
  color:var(--lime);
}
.metric__label{font-size:11px;letter-spacing:.2em;color:var(--mute)}

.crumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--mute);
}
.crumb li{display:flex;align-items:center;gap:10px}
.crumb li + li::before{content:"/";color:#41506B}
.crumb a{color:var(--mute);transition:color .25s var(--ease)}
.crumb a:hover{color:var(--brand)}
.crumb [aria-current="page"]{color:var(--text)}

.toc{display:flex;flex-direction:column;gap:2px;font-size:13.5px}
.toc a{
  display:block;
  padding:7px 0 7px 14px;
  border-left:1px solid var(--line);
  color:var(--mute);
  transition:color .25s var(--ease),border-color .25s var(--ease),padding-left .25s var(--ease);
}
.toc a:hover{color:var(--text)}
.toc a[aria-current="true"]{color:var(--lime);border-color:var(--lime);padding-left:20px}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--ink-800);
  border:1px solid var(--line);
}
.media-frame--night{
  background:linear-gradient(155deg,#141922 0%,#0A0D12 48%,#3A1A0C 100%);
}
.media-frame__img{
  display:block;
  width:100%;
  height:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  filter:saturate(.9) contrast(1.06) brightness(.92);
}
.media-frame--wide .media-frame__img{aspect-ratio:21 / 9}
.media-frame--tall .media-frame__img{aspect-ratio:3 / 4}
.media-frame--square .media-frame__img{aspect-ratio:1 / 1}
.media-frame__veil{
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(42,53,72,.45) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,53,72,.45) 1px,transparent 1px);
  background-size:72px 72px;
}
.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:14px 16px;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--text);
  background:linear-gradient(180deg,rgba(10,13,18,0),rgba(10,13,18,.88));
}

.grid-veil{
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    linear-gradient(to right,rgba(42,53,72,.55) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,53,72,.55) 1px,transparent 1px);
  background-size:64px 64px;
}
.slash{
  position:absolute;
  width:120%;
  height:220px;
  transform:rotate(-11deg);
  background:linear-gradient(90deg,rgba(255,90,31,.16),transparent 62%);
  pointer-events:none;
}

/* ---------- 10. 显现与视图切换 ---------- */
.reveal{transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal--armed{opacity:0;transform:translateY(20px)}
.reveal.is-in{opacity:1;transform:none}

html[data-view="round"] [data-view-panel="timeline"],
html[data-view="timeline"] [data-view-panel="round"]{display:none}

/* ---------- 11. 平板与移动端微调 ---------- */
@media (max-width:900px){
  .section{padding:clamp(48px,10vw,84px) 0}
  .section__head{flex-direction:column;align-items:flex-start;gap:16px}
  .vert-note{writing-mode:horizontal-tb;letter-spacing:.24em}
  .lead{font-size:16.5px}
  .btn{padding:11px 18px;font-size:13px}
}

/* ---------- 12. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html{scroll-behavior:auto}
  .reveal--armed{opacity:1;transform:none}
  .btn:hover{transform:none}
}