/* ===== BSPORTS Site Kit — /assets/site.css ===== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--font-display);font-weight:700;line-height:1.15;letter-spacing:.01em}
h4,h5,h6{font-family:var(--font-body);font-weight:600;line-height:1.35}

:root{
  --bg:#070D1A;
  --blueprint:#0E1A30;
  --panel:#152440;
  --organic:#123B4A;
  --line:#2B4266;
  --line-soft:rgba(43,66,102,.55);
  --line-faint:rgba(43,66,102,.26);
  --cyan:#26F2D0;
  --cyan-soft:#B8FFF2;
  --cyan-dim:rgba(38,242,208,.14);
  --orange:#FF7A1A;
  --orange-soft:#FFC08A;
  --ink:#F2F7FF;
  --muted:#A9BCD9;
  --ok:#46E39A;
  --warn:#FFC857;
  --danger:#FF5F6D;
  --shell:1200px;
  --gutter:clamp(18px,4vw,44px);
  --r-lg:22px;
  --r-md:14px;
  --r-sm:9px;
  --bp-cell:72px;
  --font-display:"Source Han Serif SC","Noto Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Barlow Condensed","DIN Alternate","Oswald","HarmonyOS Sans SC",ui-sans-serif,system-ui,sans-serif;
}

body{
  min-height:100%;
  background-color:var(--bg);
  background-image:
    linear-gradient(to right,var(--line-faint) 1px,transparent 1px),
    linear-gradient(to bottom,var(--line-faint) 1px,transparent 1px);
  background-size:var(--bp-cell) var(--bp-cell);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

#main-content{scroll-margin-top:110px}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ===== 通用排版与容器 ===== */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(46px,8vw,110px)}
.display{font-family:var(--font-display);font-weight:700;font-size:clamp(2.4rem,6vw,5.5rem);line-height:1.02;letter-spacing:.01em;color:var(--ink)}
.label{display:inline-block;font-family:var(--font-body);font-weight:600;font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.lede{max-width:62ch;font-size:clamp(1rem,1.5vw,1.14rem);line-height:1.85;color:var(--muted)}
.num{font-family:var(--font-num);font-weight:800;letter-spacing:.02em;font-variant-numeric:tabular-nums;line-height:1}
.prose{max-width:68ch;color:var(--muted);font-size:1.02rem;line-height:1.85}
.prose p+p{margin-top:1.05em}
.prose strong{color:var(--ink);font-weight:600}
.prose a{color:var(--cyan);text-decoration:underline;text-decoration-color:rgba(38,242,208,.42);text-underline-offset:3px}
.guide-line{position:absolute;height:1px;background:linear-gradient(90deg,transparent,var(--cyan),transparent);opacity:.45;pointer-events:none}
.coord{font-family:var(--font-num);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.coord--strong{color:var(--cyan)}

/* ===== 章节体系 ===== */
.chapter{padding-block:clamp(36px,6vw,76px);border-top:1px solid var(--line-faint)}
.chapter-head{display:flex;flex-wrap:wrap;align-items:flex-start;gap:clamp(14px,3vw,30px)}
.chapter-index{font-family:var(--font-num);font-weight:800;font-size:clamp(2.6rem,7vw,5.2rem);line-height:.86;letter-spacing:.02em;color:var(--cyan);font-variant-numeric:tabular-nums}
.chapter-index--muted{color:var(--line)}
.chapter-title{font-family:var(--font-display);font-weight:700;font-size:clamp(1.55rem,3.4vw,2.5rem);line-height:1.16;color:var(--ink)}

/* ===== 网格 ===== */
.grid{display:grid;gap:clamp(18px,3vw,32px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.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-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ===== 面板 / 卡片 ===== */
.panel{
  position:relative;
  overflow:hidden;
  padding:clamp(18px,2.6vw,30px);
  border:1px solid var(--line-soft);
  border-radius:var(--r-lg);
  background:linear-gradient(158deg,rgba(21,36,64,.92),rgba(14,26,48,.68));
}
.panel::before{
  content:"";position:absolute;top:0;left:0;width:46px;height:46px;
  border-top:1px solid var(--cyan);border-left:1px solid var(--cyan);opacity:.6;pointer-events:none;
}
.panel--organic{background:linear-gradient(150deg,rgba(18,59,74,.85),rgba(14,26,48,.7));border-radius:32px 22px 36px 20px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid transparent;border-radius:999px;
  font-family:var(--font-body);font-size:.94rem;font-weight:600;letter-spacing:.06em;
  cursor:pointer;transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--orange);color:#1A0E04;box-shadow:0 12px 28px rgba(255,122,26,.24)}
.btn-secondary{background:transparent;color:var(--cyan);border-color:var(--cyan)}
.btn-secondary:hover{background:var(--cyan-dim)}
.btn-quiet{background:var(--panel);color:var(--ink);border-color:var(--line-soft)}
.btn-quiet:hover{border-color:var(--cyan);color:var(--cyan-soft)}

/* ===== 标签与状态 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border:1px solid currentColor;border-radius:999px;
  font-family:var(--font-body);font-size:.74rem;font-weight:600;letter-spacing:.1em;
}
.tag--ok{color:var(--ok)}
.tag--warn{color:var(--warn)}
.tag--danger{color:var(--danger)}
.tag--info{color:var(--cyan)}

/* ===== 筛选 ===== */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.filter-chip{
  appearance:none;padding:8px 16px;border:1px solid var(--line);border-radius:999px;
  background:transparent;color:var(--muted);
  font-family:var(--font-body);font-size:.86rem;font-weight:500;letter-spacing:.06em;
  cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.filter-chip:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.filter-chip[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:#04211C;font-weight:600}
.filter-count{font-family:var(--font-num);font-size:1rem;letter-spacing:.1em;color:var(--orange)}
.is-hidden{display:none !important}

/* ===== 步骤路径（技能树） ===== */
.path{position:relative;display:grid;gap:20px}
.path-step{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:start}
.path-node{
  position:relative;z-index:1;display:grid;place-items:center;
  width:46px;height:46px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--panel);color:var(--cyan);
  font-family:var(--font-num);font-weight:800;font-size:1.05rem;
}
.path-step[aria-current="true"] .path-node{background:var(--cyan);border-color:var(--cyan);color:#04211C}
.path-line{position:absolute;left:22px;top:48px;bottom:-20px;width:1px;background:linear-gradient(180deg,var(--cyan),rgba(38,242,208,0))}
.path-step:last-child .path-line{display:none}
.path-body{padding-top:4px}
.path-title{font-family:var(--font-body);font-weight:600;font-size:1.02rem;color:var(--ink)}
.path-trigger{
  appearance:none;background:none;border:0;padding:0;text-align:left;cursor:pointer;
  font-family:var(--font-body);font-weight:600;font-size:1.02rem;color:var(--ink);
}
.path-trigger:hover{color:var(--cyan-soft)}
.path-text{margin-top:8px;color:var(--muted);font-size:.94rem;max-width:58ch}

/* ===== 表格 ===== */
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line-soft);border-radius:var(--r-md)}
.data-table{width:100%;min-width:560px;border-collapse:collapse;font-size:.92rem}
.data-table th{
  padding:12px 16px;background:var(--panel);color:var(--cyan);
  font-size:.78rem;font-weight:600;letter-spacing:.1em;text-align:left;
  border-bottom:1px solid var(--line);white-space:nowrap;
}
.data-table td{padding:12px 16px;color:var(--muted);border-bottom:1px solid var(--line-faint)}
.data-table tbody tr:nth-child(even) td{background:rgba(14,26,48,.55)}
.data-table td .num{color:var(--ink);font-size:1rem}

/* ===== 面包屑 ===== */
.breadcrumbs{font-size:.82rem}
.breadcrumbs-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs-list li{display:flex;align-items:center;gap:8px}
.breadcrumbs-list li+li::before{content:"/";color:var(--line)}
.breadcrumbs a{color:var(--muted);transition:color .2s ease}
.breadcrumbs a:hover{color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--ink)}

/* ===== 图片容器 ===== */
.media{position:relative;overflow:hidden;border:1px solid var(--line-soft);border-radius:var(--r-lg);background:var(--blueprint)}
.media-frame{position:relative;aspect-ratio:16/9;width:100%}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--portrait{aspect-ratio:3/4}
.media-img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(38,242,208,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(38,242,208,.09) 1px,transparent 1px);
  background-size:40px 40px;
}
.media-caption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  padding:14px 16px;font-size:.82rem;letter-spacing:.06em;color:var(--cyan-soft);
  background:linear-gradient(0deg,rgba(7,13,26,.92),rgba(7,13,26,0));
}
.media-badge{
  position:absolute;top:14px;left:14px;z-index:1;
  padding:5px 12px;border:1px solid var(--cyan);border-radius:999px;background:rgba(7,13,26,.72);
  font-family:var(--font-num);font-size:.74rem;letter-spacing:.14em;color:var(--cyan);
}

/* ===== 页头 ===== */
.skip-link{
  position:absolute;left:14px;top:-70px;z-index:200;
  padding:10px 20px;border-radius:0 0 10px 10px;
  background:var(--cyan);color:#04211C;font-weight:600;
  transition:top .2s ease;
}
.skip-link:focus{top:0}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,26,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
}
.header-rail{border-bottom:1px solid var(--line-faint)}
.header-rail-inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-block:7px;
}
.header-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(16px,3vw,40px);
  min-height:74px;
}
.brand{display:inline-flex;align-items:center;gap:12px;flex:none}
.brand-mark{
  position:relative;display:grid;place-items:center;flex:none;
  width:40px;height:40px;border:1px solid var(--line);border-radius:13px;
  background:linear-gradient(140deg,var(--panel),var(--organic));
  transition:border-color .25s ease,box-shadow .25s ease;
}
.brand-mark::before{
  content:"";width:12px;height:12px;border-radius:50%;
  background:var(--cyan);box-shadow:0 0 0 4px var(--cyan-dim);
}
.brand:hover .brand-mark{border-color:var(--cyan);box-shadow:0 0 0 4px rgba(38,242,208,.1)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-name{font-family:var(--font-num);font-weight:800;font-size:1.34rem;letter-spacing:.18em;color:var(--ink)}
.brand-sub{font-family:var(--font-num);font-size:10px;letter-spacing:.26em;color:var(--cyan);text-transform:uppercase}

.site-nav{display:flex;align-items:center;gap:clamp(14px,2.4vw,34px)}
.nav-list{display:flex;align-items:center;gap:clamp(12px,1.8vw,26px);counter-reset:navidx}
.nav-list>li{counter-increment:navidx;display:flex}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 2px;color:var(--muted);
  font-size:.94rem;font-weight:500;letter-spacing:.04em;
  transition:color .2s ease;
}
.nav-link::before{
  content:"0" counter(navidx);
  font-family:var(--font-num);font-size:.68rem;letter-spacing:.1em;color:var(--line);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .28s ease;
}
.nav-link:hover,.nav-link:focus-visible{color:var(--ink)}
.nav-link:hover::before,.nav-link:focus-visible::before{color:var(--cyan)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan);font-weight:600}
.nav-link[aria-current="page"]::before{color:var(--orange)}
.nav-link[aria-current="page"]::after{background:var(--orange);transform:scaleX(1)}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 20px;border:1px solid var(--cyan);border-radius:999px;
  color:var(--cyan);font-size:.88rem;font-weight:600;letter-spacing:.08em;
  transition:background .22s ease,color .22s ease,transform .22s ease;
}
.nav-cta:hover{background:var(--cyan-dim);transform:translateY(-1px)}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border:1px solid var(--line);border-radius:999px;
  background:rgba(21,36,64,.7);color:var(--cyan);
  font-size:.84rem;font-weight:600;letter-spacing:.12em;cursor:pointer;
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px}
.nav-toggle-bars span{display:block;width:18px;height:1.5px;border-radius:2px;background:currentColor;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--line-faint);overflow:hidden}
.scroll-progress-bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--cyan),var(--orange));transition:width .12s linear}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,120px);
  background:linear-gradient(180deg,rgba(14,26,48,.62),rgba(7,13,26,1));
  border-top:1px solid var(--line-soft);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;
  width:min(440px,58%);height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--orange) 62%,rgba(255,122,26,0));
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1.25fr);
  gap:clamp(26px,4vw,60px);
  padding:clamp(42px,6vw,76px) 0 clamp(28px,3.6vw,46px);
}
.footer-col{min-width:0}
.footer-logo{font-family:var(--font-num);font-weight:800;font-size:1.6rem;letter-spacing:.2em;color:var(--ink)}
.footer-tagline{margin-top:8px;font-size:.9rem;letter-spacing:.14em;color:var(--cyan)}
.footer-icp{margin-top:16px;font-size:.82rem;color:var(--muted)}
.footer-list{display:grid;gap:10px}
.footer-list a{display:inline-block;color:var(--muted);font-size:.92rem;transition:color .2s ease,transform .2s ease}
.footer-list a:hover,.footer-list a:focus-visible{color:var(--cyan-soft);transform:translateX(3px)}
.footer-list--legal{display:flex;flex-wrap:wrap;gap:18px;margin-top:16px}
.footer-heading{
  font-family:var(--font-body);font-weight:600;font-size:.78rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--cyan);margin-bottom:16px;
}
.footer-contact{display:grid;gap:12px}
.footer-contact-item{display:flex;flex-wrap:wrap;align-items:center;gap:8px 10px;font-size:.92rem}
.footer-contact-item--wide{align-items:flex-start}
.footer-contact-label{
  min-width:46px;font-family:var(--font-num);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--cyan);
}
.footer-contact-value{color:var(--muted);word-break:break-word}
.copy-btn{
  appearance:none;padding:4px 10px;border:1px solid var(--line);border-radius:8px;
  background:transparent;color:var(--cyan);
  font-size:.72rem;font-weight:600;letter-spacing:.08em;cursor:pointer;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.copy-btn:hover{border-color:var(--cyan);background:var(--cyan-dim)}
.copy-btn[data-copied="true"]{border-color:var(--ok);color:var(--ok);background:rgba(70,227,154,.1)}
.footer-rail{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  padding:18px 0 28px;border-top:1px solid var(--line-faint);
}
.footer-rail-item{font-family:var(--font-num);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--line)}

/* ===== 侧边悬浮赛程入口 ===== */
.dock{
  position:fixed;right:clamp(12px,2vw,26px);bottom:clamp(14px,3vw,30px);z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 20px;border-radius:999px;
  background:linear-gradient(120deg,var(--orange),#FFA24E);
  color:#1A0E04;font-size:.9rem;font-weight:600;letter-spacing:.08em;
  box-shadow:0 14px 34px rgba(255,122,26,.3);
  transition:transform .22s ease,box-shadow .22s ease;
}
.dock:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(255,122,26,.4)}
.dock-pulse{position:relative;flex:none;width:9px;height:9px;border-radius:50%;background:#08131F}
.dock-pulse::after{
  content:"";position:absolute;inset:-5px;border-radius:50%;
  border:1px solid rgba(8,19,31,.45);animation:dock-ping 2.6s ease-out infinite;
}
@keyframes dock-ping{
  0%{transform:scale(.55);opacity:.9}
  70%{transform:scale(1.5);opacity:0}
  100%{transform:scale(1.5);opacity:0}
}

/* ===== 显示动效 ===== */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .span-3,.span-4,.span-5,.span-6,.span-8{grid-column:span 12}
}
@media (max-width:1040px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:block;
    max-height:calc(100vh - 96px);
    overflow-y:auto;
    padding:14px var(--gutter) 26px;
    background:linear-gradient(180deg,rgba(14,26,48,.99),rgba(7,13,26,.99));
    border-bottom:1px solid var(--line);
    box-shadow:0 30px 60px rgba(0,0,0,.55);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-12px);
    transition:opacity .28s ease,transform .28s ease,visibility .28s;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list>li{border-bottom:1px solid var(--line-faint)}
  .nav-link{display:flex;width:100%;padding:15px 4px;font-size:1.05rem}
  .nav-link::after{display:none}
  .nav-cta{margin-top:18px;padding:14px 22px}
  html.nav-open{overflow:hidden}
}
@media (max-width:880px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:720px){
  .header-rail-inner .coord:first-child{display:none}
  .brand-sub{display:none}
}
@media (max-width:620px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4,.span-5,.span-6,.span-8{grid-column:span 6}
  .chapter-head{gap:12px}
  .dock{padding:11px 16px;font-size:.84rem}
}

/* ===== 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}
  .js [data-reveal]{opacity:1;transform:none}
  .dock:hover,.btn:hover{transform:none}
}