/* ============================================================
   博奥体育 · /assets/site.css
   共享层：变量 / reset / 中文排版 / 页头 / 页脚 / 基础组件
   ============================================================ */

/* ---------- 1. 设计变量 ---------- */
:root{
  --ink:#06231C;
  --ink-deep:#03120E;
  --cyan:#2BF3C8;
  --cyan-soft:#8FF7E2;
  --flare:#FF5A2B;
  --amber:#FFC24B;
  --white:#EAF6F2;
  --mist:#5A7A72;
  --panel:#123028;
  --graphite:#0B0F0E;

  --line:rgba(43,243,200,.22);
  --line-soft:rgba(143,247,226,.13);
  --fill:rgba(43,243,200,.07);

  --font-display:"Barlow Condensed","Oswald","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",Impact,sans-serif;
  --font-data:"JetBrains Mono","Roboto Mono","SFMono-Regular",Menlo,Consolas,"Noto Sans Mono CJK SC",monospace;
  --font-body:"Inter","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino GB","Microsoft YaHei",system-ui,sans-serif;

  --wrap:1240px;
  --pad:clamp(18px,4vw,32px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;min-height:100vh}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,h5,h6,figure,blockquote,p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
button{cursor:pointer;padding:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--cyan);color:var(--ink-deep)}

/* ---------- 3. 基础排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 520px at 82% -6%, rgba(43,243,200,.14), rgba(43,243,200,0) 68%),
    radial-gradient(720px 420px at 2% 14%, rgba(255,90,43,.07), rgba(255,90,43,0) 70%),
    repeating-linear-gradient(90deg, rgba(43,243,200,.045) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(0deg, rgba(43,243,200,.032) 0 1px, transparent 1px 92px);
  background-repeat:no-repeat,no-repeat,repeat,repeat;
}
#main-content{display:block;scroll-margin-top:132px}

/* ---------- 4. 可访问性 ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:3px}
.skip-link{
  position:fixed;left:var(--pad);top:-80px;z-index:200;
  padding:10px 20px;border-radius:0 0 14px 14px;
  background:var(--cyan);color:var(--ink-deep);
  font-family:var(--font-data);font-size:13px;font-weight:700;letter-spacing:.08em;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 5. 布局 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--pad)}
.section{position:relative;padding-block:clamp(56px,7vw,120px)}
.section--tight{padding-block:clamp(30px,4vw,58px)}
.grid{display:grid;gap:clamp(18px,2.6vw,36px)}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,3fr)}
.grid--split-rev{grid-template-columns:minmax(0,3fr) minmax(0,7fr)}

.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;padding-bottom:16px;margin-bottom:clamp(24px,3vw,44px);
  border-bottom:1px solid var(--line-soft);
}
.section-head__title{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.6rem,3vw,2.5rem);line-height:1.05;letter-spacing:-.005em;
}
.section-head__meta{
  font-family:var(--font-data);font-size:12px;letter-spacing:.1em;color:var(--mist);
}

/* ---------- 6. 文字层级 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--mist);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);flex:0 0 auto}
.display-1{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(2.9rem,8.5vw,7.5rem);line-height:.94;
  letter-spacing:-.01em;text-transform:uppercase;
}
.display-2{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.9rem,4.4vw,3.4rem);line-height:1.04;letter-spacing:-.005em;
}
.lede{font-size:clamp(16px,1.4vw,19px);line-height:1.8;color:rgba(234,246,242,.78);max-width:64ch}
.prose{max-width:68ch;line-height:1.85;color:rgba(234,246,242,.86)}
.prose p+p{margin-top:1.1em}
.num,.stat__value,.data-table,.data-rail{font-variant-numeric:tabular-nums}
.num{font-family:var(--font-data);letter-spacing:.01em}
.tag{
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--amber);
}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  padding:12px 22px;border:1px solid transparent;border-radius:999px;
  font-family:var(--font-data);font-size:13px;letter-spacing:.06em;white-space:nowrap;
  transition:background-color .2s var(--ease),border-color .2s var(--ease),
             color .2s var(--ease),transform .2s var(--ease);
}
.btn--primary{background:var(--cyan);color:var(--ink-deep);font-weight:700}
.btn--primary:hover{background:var(--cyan-soft);transform:translateY(-1px)}
.btn--ghost{border-color:var(--line);color:var(--cyan-soft)}
.btn--ghost:hover{border-color:var(--cyan);background:var(--fill);color:var(--white)}
.btn--alert{border-color:rgba(255,90,43,.6);color:#FFB79E}
.btn--alert:hover{background:rgba(255,90,43,.14);border-color:var(--flare);color:var(--white)}
.btn--sm{padding:9px 16px;font-size:12px}

/* ---------- 8. 面板 / 胶囊 / 数据 ---------- */
.panel{
  position:relative;background:var(--panel);
  border-radius:22px 6px 22px 6px;
  padding:clamp(20px,2.4vw,32px);overflow:hidden;
}
.panel--quiet{background:rgba(18,48,40,.5)}
.panel--edge::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:linear-gradient(180deg,var(--cyan),rgba(43,243,200,0));
}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;
  border:1px solid var(--line);border-radius:999px;background:rgba(3,18,14,.5);
  font-family:var(--font-data);font-size:12px;letter-spacing:.08em;color:var(--cyan-soft);
  transition:background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.chip:hover{border-color:var(--cyan);color:var(--white)}
.chip[aria-pressed="true"],.chip.is-active{
  background:var(--cyan);border-color:var(--cyan);color:var(--ink-deep);font-weight:700;
}
.chip--amber[aria-pressed="true"],.chip--amber.is-active{background:var(--amber);border-color:var(--amber)}

.stat-row{display:flex;flex-wrap:wrap;gap:clamp(20px,4vw,56px)}
.stat{display:flex;flex-direction:column;gap:5px}
.stat__value{
  font-family:var(--font-data);font-size:clamp(26px,3.4vw,42px);
  line-height:1;color:var(--cyan);
}
.stat__value--alert{color:var(--flare)}
.stat__value--amber{color:var(--amber)}
.stat__label{
  font-family:var(--font-data);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mist);
}

.data-table{font-family:var(--font-data);font-size:14px}
.data-table caption{text-align:left;padding-bottom:10px;font-size:12px;letter-spacing:.14em;color:var(--mist)}
.data-table th,.data-table td{padding:11px 12px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--line-soft)}
.data-table th{font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--mist)}
.data-table tbody tr{transition:background-color .2s var(--ease)}
.data-table tbody tr:hover{background:var(--fill)}
.data-table .is-up{color:var(--cyan)}
.data-table .is-down{color:var(--flare)}

.trail{display:grid}
.trail__item{
  position:relative;
  padding:0 0 clamp(22px,3vw,34px) clamp(26px,3vw,44px);
  border-left:1px solid var(--line-soft);
}
.trail__item:last-child{border-left-color:transparent;padding-bottom:0}
.trail__item::before{
  content:"";position:absolute;left:-5px;top:7px;width:9px;height:9px;border-radius:50%;
  background:var(--ink);border:1.5px solid var(--cyan);
  transition:background-color .3s var(--ease);
}
.trail__item.is-done::before{background:var(--cyan)}
.trail__title{font-family:var(--font-display);font-weight:700;font-size:1.3rem;line-height:1.2}
.trail__text{max-width:56ch;font-size:15.5px;color:rgba(234,246,242,.72)}

/* ---------- 9. 图片容器（页面阶段放置图片） ---------- */
.figure{
  position:relative;overflow:hidden;isolation:isolate;
  aspect-ratio:16/9;background:var(--graphite);
  border-radius:26px 6px 26px 6px;
}
.figure img{width:100%;height:100%;object-fit:cover}
.figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.35;
  background:repeating-linear-gradient(0deg, rgba(11,15,14,.30) 0 1px, transparent 1px 3px);
}
.figure--wide{aspect-ratio:21/9}
.figure--tall{aspect-ratio:4/5}
.figure--square{aspect-ratio:1/1}
.figure--diag{clip-path:polygon(0 3.5%,100% 0,100% 96.5%,0 100%)}
.figure__cap{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.08em;color:var(--cyan-soft);
  background:linear-gradient(0deg, rgba(3,18,14,.92), rgba(3,18,14,0));
}

/* ---------- 10. 面包屑 / 分隔 / 状态点 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.08em;color:var(--mist);
}
.breadcrumb a{color:var(--mist);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--cyan-soft)}
.breadcrumb__sep{color:rgba(143,247,226,.35)}
.breadcrumb [aria-current="page"]{color:var(--cyan-soft)}
.divider{height:1px;border:0;margin-block:clamp(28px,4vw,56px);
  background:linear-gradient(90deg,transparent,var(--line),transparent)}
.pulse-dot{
  width:8px;height:8px;border-radius:50%;background:var(--cyan);
  animation:pulse 2.4s ease-out infinite;
}
.is-hidden{display:none!important}

@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(43,243,200,.45)}
  70%{box-shadow:0 0 0 10px rgba(43,243,200,0)}
  100%{box-shadow:0 0 0 0 rgba(43,243,200,0)}
}

/* ---------- 11. 页头 ---------- */
.site-head{
  position:sticky;top:0;z-index:90;
  background:linear-gradient(180deg, rgba(3,18,14,.97) 0%, rgba(3,18,14,.92) 58%, rgba(3,18,14,.78) 100%);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.head-progress{
  position:absolute;left:0;right:0;bottom:0;height:2px;z-index:3;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--amber) 72%,var(--flare));
}

.data-rail{
  font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--mist);
  background:var(--ink-deep);border-bottom:1px solid rgba(43,243,200,.14);
}
.data-rail__inner{
  display:flex;align-items:center;gap:12px;height:34px;
  overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;
}
.data-rail__inner::-webkit-scrollbar{display:none}
.data-rail__pulse{
  flex:0 0 auto;align-self:center;width:7px;height:7px;border-radius:50%;
  background:var(--cyan);animation:pulse 2.4s ease-out infinite;
}
.data-rail__item{display:inline-flex;align-items:baseline;gap:6px;white-space:nowrap}
.data-rail__k{font-size:11px;letter-spacing:.16em;color:var(--mist)}
.data-rail__v{color:var(--cyan-soft)}
.data-rail__v b{color:var(--amber);font-weight:700}
.data-rail__sep{flex:0 0 auto;width:1px;height:12px;background:rgba(143,247,226,.2)}
.data-rail__hint{
  margin-left:auto;white-space:nowrap;font-size:11px;color:var(--mist);
  opacity:0;transform:translateY(4px);
  transition:opacity .22s var(--ease),transform .22s var(--ease);
}
.data-rail:hover .data-rail__hint,
.data-rail:focus-within .data-rail__hint{opacity:1;transform:none}

.capsule{padding:12px 0 14px;transition:padding .3s var(--ease)}
.capsule__inner{
  position:relative;display:flex;align-items:center;gap:18px;
  padding:10px 12px 10px 18px;
  border:1px solid rgba(43,243,200,.28);border-radius:999px;
  background:rgba(3,18,14,.72);
  transition:padding .3s var(--ease),border-radius .3s var(--ease),
             background-color .3s var(--ease),border-color .3s var(--ease);
}
.site-head.is-compact .capsule{padding:6px 0 8px}
.site-head.is-compact .capsule__inner{
  padding:6px 10px 6px 14px;border-radius:14px;
  background:rgba(3,18,14,.94);border-color:rgba(43,243,200,.2);
}

.brand{display:inline-flex;align-items:center;gap:11px;flex:0 0 auto}
.brand__mark{
  position:relative;display:block;flex:0 0 auto;width:20px;height:20px;
  border:1.5px solid var(--cyan);transform:rotate(45deg);
}
.brand__mark::after{content:"";position:absolute;inset:5px;background:var(--flare)}
.brand__text{display:flex;flex-direction:column;line-height:1.06}
.brand__name{
  font-family:var(--font-display);font-weight:800;font-size:20px;
  letter-spacing:.02em;color:var(--white);transition:font-size .3s var(--ease);
}
.brand__tag{
  font-family:var(--font-data);font-size:10px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--mist);
  transition:opacity .25s var(--ease);
}
.site-head.is-compact .brand__name{font-size:17px}
.site-head.is-compact .brand__tag{opacity:0;height:0;overflow:hidden}

.site-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0}
.site-nav__list{
  display:flex;align-items:center;gap:2px;min-width:0;
  padding:2px;overflow-x:auto;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;scroll-snap-type:x proximity;
}
.site-nav__list::-webkit-scrollbar{display:none}
.nav-link{
  position:relative;display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 13px;border-radius:999px;font-size:14.5px;
  color:rgba(234,246,242,.78);
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:2px;height:1.5px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--cyan-soft);background:var(--fill)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__cta{display:none}

.head-actions{display:flex;align-items:center;gap:8px;margin-left:auto;flex:0 0 auto}
.nav-toggle{
  display:none;align-items:center;gap:9px;padding:9px 14px;
  border:1px solid var(--line);border-radius:999px;
  font-family:var(--font-data);font-size:12px;letter-spacing:.1em;color:var(--cyan-soft);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--white)}
.nav-toggle__bar{
  position:relative;display:block;width:16px;height:2px;background:currentColor;
  transition:background-color .24s var(--ease);
}
.nav-toggle__bar::before,.nav-toggle__bar::after{
  content:"";position:absolute;left:0;width:16px;height:2px;background:currentColor;
  transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.nav-toggle__bar::before{top:-5px}
.nav-toggle__bar::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after{transform:translateY(-5px) rotate(-45deg)}

/* ---------- 12. 页脚 ---------- */
.site-foot{
  position:relative;overflow:hidden;margin-top:clamp(64px,10vw,150px);
  background:var(--ink-deep);border-top:1px solid rgba(43,243,200,.16);
}
.site-foot::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg, rgba(43,243,200,.05) 0 1px, transparent 1px 86px),
    radial-gradient(680px 320px at 8% 0%, rgba(43,243,200,.13), rgba(43,243,200,0) 68%),
    radial-gradient(520px 260px at 94% 100%, rgba(255,90,43,.09), rgba(255,90,43,0) 70%);
  background-repeat:repeat,no-repeat,no-repeat;
}
.site-foot > .wrap{position:relative;z-index:1}
.foot-rule{
  position:absolute;top:-1px;left:0;z-index:2;
  width:clamp(140px,26%,360px);height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
}
.foot-grid{
  display:grid;grid-template-columns:1.35fr .82fr .82fr .82fr 1.5fr;
  gap:clamp(24px,3vw,48px);
  padding-block:clamp(48px,6vw,84px) clamp(28px,3vw,40px);
}
.foot-brand{display:flex;flex-direction:column;gap:12px}
.foot-brand__mark{
  position:relative;width:26px;height:26px;
  border:1.5px solid var(--cyan);transform:rotate(45deg);
}
.foot-brand__mark::after{content:"";position:absolute;inset:7px;background:var(--flare)}
.foot-brand__name{
  font-family:var(--font-display);font-weight:800;font-size:2rem;line-height:1;letter-spacing:.01em;
}
.foot-brand__line{max-width:32ch;font-size:14.5px;line-height:1.7;color:rgba(234,246,242,.6)}
.foot-col__title{
  margin-bottom:14px;font-family:var(--font-data);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan-soft);
}
.foot-list{display:flex;flex-direction:column;gap:9px}
.foot-link{
  position:relative;display:inline-block;font-size:15px;color:rgba(234,246,242,.7);
  transition:color .2s var(--ease);
}
.foot-link::before{
  content:"";position:absolute;left:-14px;top:.78em;width:8px;height:1px;
  background:var(--cyan);opacity:0;transform:translateX(-4px);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.foot-link:hover{color:var(--cyan)}
.foot-link:hover::before{opacity:1;transform:none}
.foot-contact__list{display:flex;flex-direction:column;gap:10px}
.foot-contact__row{display:flex;gap:10px;font-size:14.5px;line-height:1.6}
.foot-contact__k{
  flex:0 0 62px;padding-top:3px;font-family:var(--font-data);font-size:11px;
  letter-spacing:.12em;color:var(--mist);
}
.foot-contact__v{color:rgba(234,246,242,.82);word-break:break-word}
.foot-note{
  margin-top:14px;padding-left:14px;max-width:42ch;
  border-left:1px solid var(--line-soft);
  font-size:13.5px;line-height:1.7;color:var(--mist);
}
.foot-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px;padding-block:22px 30px;border-top:1px solid var(--line-soft);
}
.foot-legal__line{font-family:var(--font-data);font-size:12px;letter-spacing:.06em;color:var(--mist)}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1080px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-brand{grid-column:1 / -1}
}
@media (max-width:980px){
  .grid--halves,.grid--thirds,.grid--split,.grid--split-rev{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:920px){
  .nav-toggle{display:inline-flex}
  .head-actions .btn{display:none}
  .capsule{padding:8px 0 10px}
  .capsule__inner{padding:8px 10px 8px 14px}
  .site-nav{
    position:absolute;left:0;right:0;top:calc(100% + 10px);z-index:5;
    display:none;flex-direction:column;align-items:stretch;gap:14px;
    max-height:min(70vh,520px);overflow:auto;padding:16px;
    background:rgba(3,18,14,.97);
    border:1px solid var(--line);border-radius:20px 6px 20px 6px;
  }
  .site-nav[data-open="true"]{display:flex}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px;padding:0;overflow:visible}
  .nav-link{padding:12px 14px;border-radius:12px;font-size:16px}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{background:var(--fill)}
  .site-nav__cta{
    display:flex;flex-direction:column;gap:8px;
    padding-top:14px;border-top:1px solid var(--line-soft);
  }
  .site-nav__cta .btn{width:100%}
  .brand__tag{display:none}
}
@media (max-width:620px){
  body{font-size:16px}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-contact__k{flex-basis:56px}
  .data-rail__hint{display:none}
  .brand__name{font-size:18px}
}

/* ---------- 14. 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .data-rail__pulse,.pulse-dot{animation:none;box-shadow:0 0 0 0 rgba(43,243,200,.5)}
  .data-rail__hint{opacity:1;transform:none}
}