/* =========================================================
   必一运动赛事 · 共享外壳样式 /assets/site.css
   高原夜靛 · 经幡暖橙 · 轮次档案坐标
   ========================================================= */

/* ---------- 0. 设计令牌 ---------- */
:root{
  --night:#0F1A33;
  --night-deep:#0B1428;
  --night-2:#1B2C55;
  --night-3:#33477A;
  --orange:#E4742B;
  --orange-soft:#F4A85C;
  --green:#2F8B72;
  --green-soft:#8FC9B4;
  --green-deep:#1F6350;
  --grid:#8792A8;
  --stone:#39404F;
  --cream:#F5F2EA;
  --clay:#B85C3E;
  --hair:rgba(135,146,168,.35);
  --hair-strong:rgba(135,146,168,.55);
  --hair-dark:rgba(51,71,122,.85);
  --on-dark:rgba(245,242,234,.78);
  --on-dark-strong:#F5F2EA;
  --font-head:"Archivo Narrow","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --gutter:clamp(16px,3.4vw,44px);
  --header-offset:126px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:var(--header-offset);
}
body{
  margin:0;
  background:var(--cream);
  color:var(--stone);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg,video,picture{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-head);font-weight:800;letter-spacing:-.02em;line-height:1.14;color:var(--night)}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--green-deep);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--orange)}
hr{border:0;border-top:1px solid var(--hair);margin:2em 0}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px}
::selection{background:var(--orange);color:#1A1006}

/* ---------- 2. 通用排版工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}
.caption{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.05em;
  color:var(--grid);
  line-height:1.6;
}
.wrap{
  width:min(1360px,100% - (var(--gutter) * 2));
  margin-inline:auto;
}
#main-content{display:block}
.section,
[data-round-section]{scroll-margin-top:var(--header-offset)}

/* ---------- 3. 装饰语言 ---------- */
.flag-band{display:flex;width:100%;height:3px;overflow:hidden}
.flag-band span{display:block;height:100%}
.flag-band span:nth-child(1){flex:3 1 0;background:var(--orange)}
.flag-band span:nth-child(2){flex:2 1 0;background:var(--green)}
.flag-band span:nth-child(3){flex:5 1 0;background:var(--grid)}

.grid-tex{
  background-image:
    linear-gradient(to right,rgba(135,146,168,.16) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(135,146,168,.16) 1px,transparent 1px);
  background-size:64px 64px;
}
.grid-tex--dark{
  background-image:
    linear-gradient(to right,rgba(135,146,168,.2) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(135,146,168,.2) 1px,transparent 1px);
}

/* ---------- 4. Skip link ---------- */
.skip-link{
  position:fixed;
  top:-80px;
  left:14px;
  z-index:200;
  display:inline-block;
  padding:.6em 1.1em;
  background:var(--orange);
  color:#1A1006;
  font-size:.9rem;
  font-weight:600;
  text-decoration:none;
  border-radius:2px;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px;color:#1A1006}

/* ---------- 5. 头部外壳 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--night);
  color:var(--on-dark);
  isolation:isolate;
}
.site-header::after{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--orange) 0 28%,var(--green) 28% 52%,var(--grid) 52% 100%);
}
.site-header[data-scrolled]{box-shadow:0 14px 30px rgba(8,13,28,.42)}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:2px;
  height:2px;
  width:0;
  background:var(--orange);
  z-index:3;
}

/* 5.1 上层：品牌与校订进度 */
.header-top{
  background:var(--night-deep);
  border-bottom:1px solid var(--hair-dark);
}
.header-top__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
  min-height:46px;
  padding-block:7px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--on-dark-strong);
  text-decoration:none;
  flex:none;
}
.brand:hover{color:var(--on-dark-strong)}
.brand__mark{
  width:11px;
  height:11px;
  flex:none;
  background:var(--orange);
  transform:skewX(-14deg);
}
.brand__name{
  font-family:var(--font-head);
  font-weight:800;
  font-size:1.12rem;
  letter-spacing:.06em;
  line-height:1;
}
.brand--footer .brand__name{font-size:1.22rem}

.header-status{
  margin:0;
  display:flex;
  align-items:center;
  gap:8px;
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--grid);
  min-width:0;
}
.header-status .mono{color:var(--orange-soft);font-weight:600}
.header-status__dot{
  width:6px;
  height:6px;
  flex:none;
  border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(47,139,114,.2);
}

.utility-nav{
  margin-left:auto;
  display:flex;
  gap:clamp(10px,2vw,24px);
  flex:none;
}
.utility-nav a{
  color:var(--grid);
  font-size:12.5px;
  letter-spacing:.06em;
  text-decoration:none;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.utility-nav a:hover{color:var(--orange-soft);border-bottom-color:var(--orange-soft)}

/* 5.2 下层：主导航 */
.header-bar{background:var(--night)}
.header-bar__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,26px);
  min-height:58px;
}

.site-nav{min-width:0}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  gap:clamp(10px,2.4vw,30px);
}
.site-nav__list a{
  position:relative;
  display:block;
  padding:6px 2px;
  color:var(--on-dark);
  font-size:.95rem;
  font-weight:600;
  letter-spacing:.06em;
  text-decoration:none;
  transition:color .18s var(--ease);
}
.site-nav__list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-3px;
  height:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s var(--ease);
}
.site-nav__list a:hover{color:var(--on-dark-strong)}
.site-nav__list a:hover::after{transform:scaleX(1)}
.site-nav__list a[aria-current="page"]{color:var(--on-dark-strong)}
.site-nav__list a[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--orange);
}

.header-index{
  margin:0 0 0 auto;
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--grid);
  white-space:nowrap;
  flex:none;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:.5em .85em;
  background:transparent;
  border:1px solid var(--night-3);
  border-radius:2px;
  color:var(--on-dark-strong);
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.12em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange-soft)}
.nav-toggle__bars{
  display:block;
  width:16px;
  height:2px;
  background:var(--orange);
  box-shadow:0 -5px 0 var(--orange),0 5px 0 var(--orange);
  transition:box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{
  background:transparent;
  box-shadow:0 0 0 var(--orange);
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--night);
  color:var(--on-dark);
  margin-top:0;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(230px,1.5fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,74px);
}
.footer-brand{min-width:0}
.footer-summary{
  margin:.9em 0 .7em;
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(1.15rem,2vw,1.45rem);
  line-height:1.4;
  letter-spacing:.01em;
  color:var(--on-dark-strong);
  max-width:12em;
}
.footer-meta{
  margin:0;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grid);
}

.footer-col{min-width:0}
.footer-col__heading{
  position:relative;
  margin:0 0 16px;
  padding-top:12px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  color:var(--grid);
}
.footer-col__heading::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:26px;
  height:2px;
  background:var(--orange);
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  color:var(--on-dark);
  font-size:.92rem;
  line-height:1.6;
  text-decoration:none;
  transition:color .18s var(--ease);
}
.footer-col a:hover{color:var(--orange-soft)}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
  padding-block:18px;
  border-top:1px solid var(--hair-dark);
  font-size:12.5px;
  color:var(--grid);
}
.footer-legal p{margin:0}
.footer-legal .mono{color:var(--grid);letter-spacing:.06em}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal a{color:var(--grid);text-decoration:none;transition:color .18s var(--ease)}
.footer-legal a:hover{color:var(--orange-soft)}

/* ---------- 7. 分区与标题组 ---------- */
.section{position:relative;padding-block:clamp(48px,7vw,96px)}
.section--dark{background:var(--night);color:var(--on-dark)}
.section--dark h1,.section--dark h2,.section--dark h3,.section--dark h4{color:var(--on-dark-strong)}
.section--band{background:var(--night-2);color:var(--on-dark)}
.section--cream{background:var(--cream)}

.section-head{
  position:relative;
  padding-top:16px;
  margin-bottom:clamp(24px,4vw,44px);
  display:grid;
  gap:10px;
  max-width:56em;
}
.section-head::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  width:72px;
  height:3px;
  background:var(--orange);
}
.eyebrow{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grid);
}
.section-head__title{font-size:clamp(1.6rem,4vw,2.6rem)}
.section-head__note{
  margin:0;
  font-size:.95rem;
  line-height:1.7;
  color:var(--grid);
  max-width:34em;
}

/* ---------- 8. 面包屑与正文容器 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--grid);
}
.breadcrumb a{
  color:inherit;
  text-decoration:none;
  border-bottom:1px solid var(--hair);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumb a:hover{color:var(--orange);border-bottom-color:var(--orange)}
.breadcrumb__sep{color:var(--night-3)}
.breadcrumb [aria-current="page"]{color:var(--stone)}

.prose{max-width:44em}
.prose p{max-width:34em}
.prose > p:first-child{font-size:1.06rem;color:var(--night)}
.prose h2{margin:1.7em 0 .5em;font-size:clamp(1.3rem,3vw,1.85rem)}
.prose h3{margin:1.4em 0 .4em;font-size:clamp(1.08rem,2.2vw,1.32rem)}
.prose li{position:relative;padding-left:1.25em;margin-bottom:.4em;max-width:34em}
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:8px;
  height:2px;
  background:var(--orange);
}
.section--dark .prose p,
.section--dark .prose li{color:var(--on-dark)}
.section--dark .prose > p:first-child{color:var(--on-dark-strong)}

/* ---------- 9. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  padding:.78em 1.4em;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-body);
  font-size:.94rem;
  font-weight:600;
  letter-spacing:.03em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--primary{background:var(--orange);color:#1A1006}
.btn--primary:hover{background:var(--orange-soft);color:#1A1006;transform:translateY(-1px)}
.btn--ghost{background:transparent;border-color:var(--hair-strong);color:var(--on-dark-strong)}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange-soft)}
.btn--outline{background:transparent;border-color:rgba(57,64,79,.35);color:var(--night)}
.btn--outline:hover{border-color:var(--orange);color:var(--orange)}
.btn--dark{background:var(--night);color:var(--on-dark-strong)}
.btn--dark:hover{background:var(--night-2)}
.btn--sm{padding:.55em 1em;font-size:.85rem}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 10. 数据卡 / 条目 / 刻度索引 ---------- */
.data-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.6vw,26px);
  background:var(--night-2);
  border:1px solid var(--hair-dark);
  color:var(--on-dark);
}
.data-card__label{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--grid);
}
.data-card__value{
  margin:0;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(2rem,5vw,2.9rem);
  line-height:1;
  letter-spacing:-.03em;
  color:var(--on-dark-strong);
}
.data-card__value em{
  font-style:normal;
  font-size:.4em;
  letter-spacing:.04em;
  color:var(--orange);
  margin-left:.6em;
}
.data-card__rows{
  display:grid;
  gap:8px;
  padding-top:12px;
  border-top:1px solid var(--hair-dark);
  font-size:.9rem;
}
.data-card__rows li{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.data-card__rows b{
  font-family:var(--font-mono);
  font-weight:600;
  color:var(--orange-soft);
}
.data-card__source{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--grid);
}

.entry-list{display:grid;border-top:1px solid var(--hair)}
.entry-row{border-bottom:1px solid var(--hair)}
.entry-row__summary{
  display:flex;
  align-items:baseline;
  gap:clamp(10px,2vw,20px);
  width:100%;
  padding:16px 0;
  background:none;
  border:0;
  text-align:left;
  cursor:pointer;
}
.entry-row__round{
  flex:none;
  min-width:4.6em;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--orange);
}
.entry-row__title{
  font-size:1rem;
  font-weight:600;
  color:currentColor;
  transition:color .18s var(--ease);
}
.entry-row__summary:hover .entry-row__title{color:var(--orange)}
.entry-row__caret{
  margin-left:auto;
  flex:none;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--grid);
}
.entry-row__body{
  display:none;
  padding:0 0 20px;
  font-size:.9rem;
  color:var(--grid);
}
.entry-row__summary[aria-expanded="true"] + .entry-row__body{display:block}
.entry-row__body p{max-width:34em}
.entry-row__code{
  display:inline-block;
  margin-right:.6em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--orange-soft);
}

.round-index{display:grid;gap:2px;padding-left:0;border-left:1px solid var(--hair)}
.round-index__item{
  position:relative;
  display:flex;
  align-items:center;
  gap:10px;
  padding:7px 0 7px 16px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--grid);
  text-decoration:none;
  transition:color .18s var(--ease);
}
.round-index__item::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:10px;
  height:1px;
  background:var(--hair-strong);
  transition:width .2s var(--ease),background-color .2s var(--ease);
}
.round-index__item:hover{color:var(--orange-soft)}
.round-index__item[aria-current="true"]{color:var(--orange);font-weight:700}
.round-index__item[aria-current="true"]::before{width:16px;height:2px;background:var(--orange)}

/* ---------- 11. 分段控件与表格 ---------- */
.tabs{
  display:inline-flex;
  gap:2px;
  padding:3px;
  background:var(--night-2);
  border:1px solid var(--hair-dark);
}
.tabs__btn{
  appearance:none;
  padding:.5em 1.1em;
  background:none;
  border:0;
  color:var(--on-dark);
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.tabs__btn:hover{color:var(--on-dark-strong)}
.tabs__btn[aria-selected="true"]{background:var(--orange);color:#1A1006}
.tabs__panel[hidden]{display:none}

.table{
  width:100%;
  border-collapse:collapse;
  font-size:.92rem;
}
.table caption{
  padding-bottom:10px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--grid);
  text-transform:uppercase;
}
.table th,
.table td{
  padding:11px 12px;
  text-align:left;
  border-bottom:1px solid var(--hair);
}
.table th{
  font-size:12px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--grid);
}
.table th.n,
.table td.n{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  text-align:right;
}
.table tbody tr{transition:background-color .18s var(--ease)}
.table tbody tr:hover{background:rgba(135,146,168,.1)}

/* ---------- 12. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--night-2);
  clip-path:polygon(0 4%,100% 0,100% 96%,0 100%);
  transition:transform .28s var(--ease);
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.04);
}
.media-frame__tag{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 12px;
  background:var(--night);
  color:var(--orange-soft);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.media-frame__placeholder{
  display:flex;
  align-items:center;
  justify-content:center;
  aspect-ratio:16 / 10;
  background:linear-gradient(135deg,var(--night-2) 0%,var(--night) 62%,#101B36 100%);
  color:var(--night-3);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-align:center;
  padding:1em;
}
.media-frame:hover{transform:translate(2px,-2px)}
.media-frame--flat{clip-path:none}

/* ---------- 13. 入场显现 ---------- */
[data-reveal]{transition:opacity .34s var(--ease),transform .34s var(--ease)}
[data-reveal].is-hidden{opacity:0;transform:translateY(12px)}

/* ---------- 14. 移动端与平板 ---------- */
@media (max-width:1100px){
  .header-index{font-size:11px;letter-spacing:.12em}
}

@media (max-width:960px){
  :root{--header-offset:104px}
  .nav-toggle{display:inline-flex}
  .header-bar__inner{min-height:52px}
  .header-index{display:none}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    padding:8px var(--gutter) 22px;
    background:var(--night-2);
    border-top:2px solid var(--orange);
    box-shadow:0 20px 34px rgba(8,13,28,.5);
    max-height:calc(100vh - 100px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:block}
  .site-nav__list{
    flex-direction:column;
    flex-wrap:nowrap;
    gap:0;
  }
  .site-nav__list li + li{border-top:1px solid var(--hair-dark)}
  .site-nav__list a{padding:14px 2px;font-size:1rem}
  .site-nav__list a::after{display:none}
  .site-nav__list a[aria-current="page"]{color:var(--orange-soft)}
  .site-nav__list a[aria-current="page"]::before{
    content:"";
    display:inline-block;
    width:8px;
    height:8px;
    margin-right:10px;
    background:var(--orange);
    transform:skewX(-14deg);
  }
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:640px){
  body{font-size:16px}
  .header-top__inner{min-height:42px}
  .header-status{display:none}
  .utility-nav{gap:14px}
  .utility-nav a{font-size:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-legal{flex-direction:column;align-items:flex-start}
}

@media (max-width:420px){
  .utility-nav a:first-child{display:none}
}

/* ---------- 15. 动效与可访问性降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal].is-hidden{opacity:1;transform:none}
  .media-frame:hover{transform:none}
  .btn--primary:hover{transform:none}
}