/* ============================================================
   LM体育 · 共享外壳样式  /assets/site.css
   深空黑基底 + 天山银蓝近单色阶 + 赛场橙红唯一强调
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --void:#0A0F1A;
  --ink:#111A2C;
  --steel:#1E2C46;
  --glacier:#4C7FB0;
  --snow:#A8C6E0;
  --paper:#EDF3F9;
  --flare:#FF5A1F;
  --warn:#F5B21B;
  --red:#D8333F;
  --gold:#C9A227;

  --rail-w:264px;
  --rail-h:64px;
  --gutter:clamp(18px,4.2vw,56px);
  --shell:1240px;

  --hair:rgba(76,127,176,.34);
  --hair-soft:rgba(76,127,176,.18);
  --glass:rgba(17,26,44,.6);
  --shadow-panel:0 26px 60px -40px rgba(0,0,0,.95);
  --ease:cubic-bezier(.2,.72,.24,1);
  --dur:320ms;

  --font-cn:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-num:ui-monospace,"SF Mono","JetBrains Mono","Consolas","Roboto Mono",monospace;
}

/* ---------- 3. 基础排版 ---------- */
html{font-size:16px}
body{
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  color:var(--paper);
  background-color:var(--void);
  background-image:
    radial-gradient(120% 80% at 6% -14%, rgba(76,127,176,.22), transparent 58%),
    radial-gradient(70% 55% at 104% -6%, rgba(255,90,31,.10), transparent 60%),
    radial-gradient(95% 65% at 46% 116%, rgba(30,44,70,.66), transparent 74%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  overflow-x:hidden;
  padding-top:var(--rail-h);
}
body.nav-locked{overflow:hidden}

h1,h2,h3,h4{font-weight:900;line-height:1.18;letter-spacing:-.02em}
h1{font-size:clamp(30px,6.4vw,56px)}
h2{font-size:clamp(22px,3.6vw,34px)}
h3{font-size:clamp(17px,2.4vw,22px);line-height:1.34}
p{max-width:44em}
strong,b{font-weight:700}
small{font-size:13px;line-height:1.7}

.num,.stat,.rail-link__idx,time{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

a:focus-visible,button:focus-visible,summary:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--flare);
  outline-offset:3px;
  border-radius:2px;
}

.skip-link{
  position:fixed;
  top:12px;left:12px;
  z-index:200;
  padding:10px 18px;
  background:var(--flare);
  color:var(--void);
  font-size:14px;font-weight:700;
  border-radius:2px;
  transform:translateY(-180%);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 4. 布局容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.stack{display:grid;gap:clamp(28px,4.6vw,68px)}
.grid-duo,.grid-trio,.grid-quad{display:grid;gap:clamp(14px,2.4vw,30px);grid-template-columns:1fr}
@media (min-width:760px){
  .grid-duo{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-trio{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-quad{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1100px){
  .grid-trio{grid-template-columns:1.25fr .85fr 1fr}
  .grid-quad{grid-template-columns:1.4fr .8fr .8fr 1.1fr}
}

/* ---------- 5. 侧边轨道 · 头部 ---------- */
.site-rail{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--rail-h);
  z-index:90;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:0 var(--gutter);
  background:rgba(10,15,26,.97);
  border-bottom:1px solid var(--hair);
}

.rail-brand{min-width:0}
.rail-brand__link{display:flex;align-items:center;gap:10px;min-width:0}
.rail-brand__text{min-width:0}
.rail-brand__name{display:block;font-size:16px;font-weight:900;letter-spacing:-.01em;line-height:1.3;color:var(--paper)}
.rail-brand__desc{display:none;font-size:12px;line-height:1.6;color:var(--snow)}

.rail-mark{
  display:grid;
  place-items:center;
  flex:none;
  width:38px;height:38px;
  background:var(--flare);
  color:var(--void);
  font-family:var(--font-num);
  font-weight:700;font-size:14px;letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}

.rail-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 14px;
  border:1px solid var(--hair);
  border-radius:2px;
  background:rgba(30,44,70,.7);
  color:var(--paper);
  font-size:13.5px;font-weight:700;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.rail-toggle:hover{background:rgba(76,127,176,.3);border-color:var(--glacier)}
.rail-toggle__bars{display:grid;gap:4px;width:18px}
.rail-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.rail-toggle[aria-expanded="true"]{border-color:var(--flare);color:var(--flare)}
.rail-toggle[aria-expanded="true"] .rail-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.rail-toggle[aria-expanded="true"] .rail-toggle__bars i:nth-child(2){opacity:0}
.rail-toggle[aria-expanded="true"] .rail-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.rail-toggle__text{white-space:nowrap}

.rail-nav{
  position:fixed;
  top:0;bottom:0;left:0;
  width:min(86vw,340px);
  z-index:88;
  display:flex;
  flex-direction:column;
  gap:16px;
  padding:calc(var(--rail-h) + 20px) 20px 30px;
  background:linear-gradient(180deg,#0A0F1A 0%,#111A2C 100%);
  border-right:1px solid var(--hair);
  box-shadow:36px 0 70px -34px rgba(0,0,0,.95);
  transform:translateX(-104%);
  transition:transform 360ms var(--ease);
  overflow-y:auto;
  overscroll-behavior:contain;
}
.site-rail[data-open="true"] .rail-nav{transform:translateX(0)}

.rail-nav__hint{
  font-size:11.5px;
  letter-spacing:.2em;
  color:rgba(168,198,224,.58);
  max-width:none;
}

.rail-list{
  display:flex;
  flex-direction:column;
  border-top:1px solid var(--hair-soft);
}
.rail-list li{border-bottom:1px solid var(--hair-soft)}

.rail-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:12px 10px 12px 12px;
  border-left:2px solid transparent;
  color:var(--snow);
  font-size:15px;
  font-weight:600;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.rail-link__idx{font-size:11px;color:rgba(168,198,224,.5)}
.rail-link__label{white-space:nowrap}
.rail-link:hover{
  color:var(--paper);
  background:rgba(76,127,176,.14);
  border-left-color:rgba(76,127,176,.7);
}
.rail-link[aria-current="page"]{
  color:var(--paper);
  background:linear-gradient(90deg,rgba(255,90,31,.22),rgba(255,90,31,0) 82%);
  border-left-color:var(--flare);
}
.rail-link[aria-current="page"] .rail-link__idx{color:var(--flare)}

.rail-cta{
  margin-top:auto;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:18px;
  border-top:1px solid var(--hair-soft);
}
.rail-cta .btn{width:100%}
.rail-cta__note{
  font-size:12px;
  line-height:1.6;
  color:rgba(168,198,224,.62);
}

.rail-scrim{
  position:fixed;
  inset:0;
  z-index:84;
  background:rgba(6,9,16,.74);
  opacity:0;
  pointer-events:none;
  transition:opacity 300ms var(--ease);
}
.site-rail[data-open="true"] .rail-scrim{opacity:1;pointer-events:auto}

/* ---------- 6. 滚动脉冲条 ---------- */
.scroll-pulse{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  z-index:120;
  pointer-events:none;
}
.scroll-pulse::before{
  content:"";
  display:block;
  height:100%;
  width:100%;
  background:linear-gradient(90deg,var(--flare),var(--gold));
  transform:scaleX(var(--p,0));
  transform-origin:0 50%;
  transition:transform 120ms linear;
}

/* ---------- 7. 桌面端轨道切换 ---------- */
@media (min-width:1024px){
  body{padding-top:0;padding-left:var(--rail-w)}
  .scroll-pulse{left:var(--rail-w)}

  .site-rail{
    top:0;left:0;bottom:0;right:auto;
    width:var(--rail-w);
    height:auto;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:24px;
    padding:30px 20px 24px;
    background:linear-gradient(180deg,#0A0F1A 0%,#0E1626 58%,#111A2C 100%);
    border-right:1px solid var(--hair);
    border-bottom:0;
    -webkit-backdrop-filter:blur(16px) saturate(120%);
    backdrop-filter:blur(16px) saturate(120%);
  }

  .rail-brand__link{flex-direction:column;align-items:flex-start;gap:14px}
  .rail-brand__name{font-size:19px}
  .rail-brand__desc{display:block;max-width:16em}
  .rail-mark{width:52px;height:52px;font-size:18px}

  .rail-toggle{display:none}

  .rail-nav{
    position:static;
    transform:none;
    width:auto;
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    flex:1 1 auto;
    overflow-y:auto;
    overflow-x:hidden;
    transition:none;
    scrollbar-width:thin;
  }

  .rail-scrim{display:none}
}

/* ---------- 8. 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid var(--hair);
  border-radius:2px;
  background:rgba(30,44,70,.62);
  color:var(--paper);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.02em;
  text-align:center;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.btn:hover{background:rgba(76,127,176,.34);border-color:var(--glacier)}
.btn--flare{background:var(--flare);border-color:var(--flare);color:var(--void)}
.btn--flare:hover{background:#ff7239;border-color:#ff7239;color:var(--void)}
.btn--ghost{background:transparent;color:var(--snow)}
.btn--ghost:hover{background:rgba(76,127,176,.18);color:var(--paper)}
.btn--quiet{padding:8px 12px;background:transparent;border-color:transparent;color:var(--glacier)}
.btn--quiet:hover{color:var(--flare);background:transparent}

/* ---------- 9. 面包屑 / 眉题 / 标签 ---------- */
.crumbs{padding:20px 0 0;font-size:12.5px;color:rgba(168,198,224,.62)}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";margin-right:8px;color:rgba(76,127,176,.7)}
.crumbs a:hover{color:var(--flare)}
.crumbs [aria-current="page"]{color:var(--paper)}

.eyebrow{
  display:inline-block;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--glacier);
  text-transform:uppercase;
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  border:1px solid var(--hair);
  border-radius:999px;
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--snow);
  background:rgba(17,26,44,.66);
}
.tag--flare{border-color:var(--flare);color:var(--flare)}
.tag--warn{border-color:rgba(245,178,27,.7);color:var(--warn)}
.tag--red{border-color:rgba(216,51,63,.75);color:var(--red)}

/* ---------- 10. 堆叠面板 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,3.4vw,38px);
  background:var(--ink);
  border:1px solid var(--hair-soft);
  border-radius:3px;
  box-shadow:var(--shadow-panel);
}
.panel--glass{
  background:linear-gradient(158deg,rgba(30,44,70,.78),rgba(17,26,44,.5));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-color:rgba(168,198,224,.18);
}
.panel--light{
  background:var(--paper);
  color:var(--void);
  border-color:#c9d8e8;
  box-shadow:0 30px 70px -46px rgba(0,0,0,.9);
}
.panel--light .panel__note,
.panel--light .eyebrow{color:rgba(10,15,26,.6)}
.panel--light .divider{background:rgba(10,15,26,.14)}
.panel--flush{padding:0;overflow:hidden}

.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px 20px;
  margin-bottom:clamp(14px,2vw,22px);
}
.panel__kicker{
  display:inline-block;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--glacier);
}
.panel__title{font-weight:900;letter-spacing:-.02em}
.panel__note{
  font-size:13px;
  line-height:1.75;
  color:rgba(168,198,224,.72);
  max-width:36em;
}
.divider{height:1px;background:var(--hair-soft);border:0;margin:clamp(14px,2.2vw,24px) 0}

.pulse-edge{overflow:hidden}
.pulse-edge::after{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:34%;height:1px;
  background:linear-gradient(90deg,rgba(255,90,31,0),var(--flare),rgba(255,90,31,0));
  animation:pulse-sweep 4.6s linear infinite;
  pointer-events:none;
}
@keyframes pulse-sweep{
  from{transform:translateX(-120%)}
  to{transform:translateX(320%)}
}

/* ---------- 11. 数据列表 ---------- */
.data-list{border-top:1px solid var(--hair-soft)}
.data-list li{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:4px 14px;
  padding:12px 0;
  border-bottom:1px solid var(--hair-soft);
}
.data-list__label{font-size:13.5px;color:var(--snow);flex:1 1 12em}
.data-list__value{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-size:15px;
  color:var(--paper);
}
.panel--light .data-list__label{color:rgba(10,15,26,.66)}
.panel--light .data-list__value{color:var(--void)}

/* ---------- 12. 主题筛选（仅筛当前页） ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.filter-bar__label{
  margin-right:2px;
  font-size:11.5px;
  letter-spacing:.2em;
  color:rgba(168,198,224,.6);
  max-width:none;
}
.filter-btn{
  padding:7px 15px;
  border:1px solid rgba(76,127,176,.45);
  border-radius:999px;
  background:rgba(17,26,44,.66);
  color:var(--snow);
  font-size:13.5px;
  font-weight:600;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.filter-btn:hover{color:var(--paper);border-color:rgba(168,198,224,.75);background:rgba(76,127,176,.24)}
.filter-btn[aria-pressed="true"]{background:var(--flare);border-color:var(--flare);color:var(--void)}
.filter-empty{
  padding:18px 0;
  font-size:14px;
  color:rgba(168,198,224,.7);
  max-width:none;
}

/* ---------- 13. 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:3px;
  border:1px solid rgba(168,198,224,.16);
  background:linear-gradient(150deg,var(--steel) 0%,var(--void) 100%);
  aspect-ratio:16/10;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__tag{
  position:absolute;
  top:12px;left:12px;
  padding:4px 10px;
  background:rgba(10,15,26,.8);
  border:1px solid var(--hair);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--snow);
}
.media-frame__cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:32px 16px 14px;
  font-size:12.5px;
  line-height:1.7;
  color:var(--snow);
  background:linear-gradient(0deg,rgba(6,9,16,.92),rgba(6,9,16,0));
  max-width:none;
}

/* ---------- 14. 入场动效 ---------- */
.reveal{transition:opacity 380ms var(--ease),transform 380ms var(--ease)}
html.js .reveal:not(.is-in){opacity:0;transform:translateY(16px)}

/* ---------- 15. 页脚 ---------- */
.site-foot{
  position:relative;
  margin-top:clamp(52px,8vw,120px);
  padding:clamp(40px,6vw,76px) var(--gutter) 26px;
  background:linear-gradient(180deg,rgba(10,15,26,.35) 0%,#070B14 62%);
  border-top:1px solid var(--hair-soft);
  color:var(--snow);
  font-size:14px;
}
.site-foot::before{
  content:"";
  position:absolute;
  top:-1px;left:0;
  width:min(320px,42%);
  height:2px;
  background:linear-gradient(90deg,var(--flare),rgba(255,90,31,0));
}
.site-foot::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(76,127,176,.09) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(0deg,rgba(76,127,176,.07) 0 1px,transparent 1px 64px);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 70%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 70%);
}

.foot-grid{
  position:relative;
  z-index:1;
  display:grid;
  gap:clamp(26px,4vw,48px);
  grid-template-columns:1fr;
  max-width:var(--shell);
  margin:0 auto;
}
@media (min-width:700px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-brand{grid-column:1 / -1}
}
@media (min-width:1100px){
  .foot-grid{grid-template-columns:1.7fr .7fr .7fr 1.35fr}
  .foot-brand{grid-column:auto}
}

.foot-brand{display:flex;flex-direction:column;gap:12px;align-items:flex-start}
.foot-mark{
  display:grid;
  place-items:center;
  width:44px;height:44px;
  background:var(--flare);
  color:var(--void);
  font-family:var(--font-num);
  font-weight:700;font-size:16px;
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.foot-line{
  font-size:16px;
  font-weight:700;
  line-height:1.7;
  color:var(--paper);
  max-width:22em;
}
.foot-note{
  font-size:13px;
  line-height:1.8;
  color:rgba(168,198,224,.66);
  max-width:24em;
}

.foot-col__title{
  margin-bottom:14px;
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.22em;
  color:rgba(168,198,224,.58);
  text-transform:uppercase;
}
.foot-list li+li{margin-top:2px}
.foot-list a{
  display:inline-block;
  padding:4px 0;
  color:var(--snow);
  font-size:14.5px;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.foot-list a:hover{color:var(--flare);transform:translateX(3px)}

.foot-contact li{
  display:flex;
  gap:12px;
  padding:8px 0;
  border-bottom:1px dashed rgba(76,127,176,.2);
}
.foot-contact__k{
  flex:none;
  width:5.6em;
  font-size:12.5px;
  color:rgba(168,198,224,.55);
}
.foot-contact__v{
  font-size:13.5px;
  line-height:1.75;
  color:var(--snow);
  word-break:break-word;
}

.foot-base{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  max-width:var(--shell);
  margin:clamp(32px,5vw,56px) auto 0;
  padding-top:20px;
  border-top:1px solid var(--hair-soft);
  font-size:12.5px;
  color:rgba(168,198,224,.66);
}
.foot-meta{max-width:none}
.foot-base__links{display:flex;flex-wrap:wrap;gap:6px 18px}
.foot-base__links a{color:rgba(168,198,224,.82)}
.foot-base__links a:hover{color:var(--flare)}

/* ---------- 16. 减少动效 ---------- */
@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}
  html.js .reveal:not(.is-in){opacity:1;transform:none}
  .pulse-edge::after{display:none}
  .foot-list a:hover{transform:none}
  .scroll-pulse::before{transition:none}
}