/* ==========================================================================
   巴沙体育看台 · 共享样式 /assets/site.css
   01 变量  02 重置  03 基础排版  04 布局外壳  05 通用组件
   06 头部悬浮胶囊  07 页脚三带  08 图片容器  09 动效  10 响应式与降级
   ========================================================================== */

/* ---------- 01 变量 ---------- */
:root{
  --sand:#E86A2C;
  --night:#0E1B2A;
  --night-deep:#08121C;
  --mint:#2FC7A8;
  --alert:#D64545;
  --amber:#F2B33D;
  --paper:#F4F1EC;
  --line:#C9CFD6;
  --ink:#12171C;
  --muted:#6B7683;

  --shell-max:1240px;
  --pad:clamp(16px,4vw,40px);
  --gap:clamp(18px,2.6vw,42px);

  --font-display:"Barlow Condensed","Oswald","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-sans:"Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --r-pill:999px;
  --shadow-hard:8px 8px 0 var(--night-deep);
  --shadow-sand:8px 8px 0 var(--sand);
  --t-fast:200ms cubic-bezier(.2,.7,.3,1);
  --t-mid:300ms cubic-bezier(.2,.7,.3,1);
}

/* ---------- 02 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;padding-top:84px;background:var(--paper);color:var(--ink)}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--line);margin:0}
#main-content{scroll-margin-top:100px}

a:focus-visible,button:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--amber);outline-offset:3px;border-radius:6px;
}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}

/* ---------- 03 基础排版 ---------- */
body{
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{
  margin:0 0 .55em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.02;
  letter-spacing:-.006em;
  font-stretch:85%;
}
h1{font-size:clamp(42px,6.6vw,96px)}
h2{font-size:clamp(28px,3.6vw,52px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:18px;letter-spacing:.01em}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
strong,b{font-weight:700}

.kicker{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--sand);
}
.num{
  font-family:var(--font-mono);
  font-weight:600;
  letter-spacing:.02em;
  font-variant-numeric:tabular-nums;
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;
  border:1.5px solid currentColor;border-radius:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;line-height:1.4;
}
.tag--sand{color:var(--sand)}
.tag--mint{color:var(--mint)}
.tag--alert{color:var(--alert)}
.tag--amber{color:var(--amber)}

.prose{font-size:17px;line-height:1.62;max-width:72ch}
.prose h2{margin-top:1.5em}
.prose h3{margin-top:1.3em}
.prose p{margin-bottom:1.2em}
.prose a{color:var(--ink);text-decoration:none;border-bottom:1.5px solid var(--sand)}
.prose a:hover{border-color:var(--alert)}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.3em;list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.5em}

/* ---------- 04 布局外壳 ---------- */
.shell{
  width:100%;max-width:var(--shell-max);
  margin-inline:auto;padding-inline:var(--pad);
}
.shell--narrow{max-width:900px}
.shell--wide{max-width:1440px}

.band{position:relative;padding-block:clamp(48px,7vw,104px)}
.band--paper{background:var(--paper);color:var(--ink)}
.band--night{background:var(--night);color:var(--paper)}
.band--deep{background:var(--night-deep);color:var(--paper)}
.band--sand{background:var(--sand);color:var(--night-deep)}
.band--night::before,.band--deep::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:repeating-linear-gradient(90deg,rgba(244,241,236,.03) 0 1px,transparent 1px 3px);
}
.band--night .kicker,.band--deep .kicker{color:var(--amber)}

.split{display:grid;gap:var(--gap);align-items:start}
.split--5-7{grid-template-columns:5fr 7fr}
.split--7-5{grid-template-columns:7fr 5fr}
.split--4-8{grid-template-columns:4fr 8fr}
.split--3-9{grid-template-columns:3fr 9fr}

/* ---------- 05 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;
  border:2px solid var(--night-deep);border-radius:10px;
  background:var(--paper);color:var(--night-deep);
  font-size:15px;font-weight:700;line-height:1.2;text-decoration:none;cursor:pointer;
  box-shadow:var(--shadow-hard);
  transition:transform var(--t-fast),box-shadow var(--t-fast),background var(--t-fast),color var(--t-fast);
}
.btn:hover{transform:translate(-3px,-3px);box-shadow:11px 11px 0 var(--night-deep)}
.btn:active{transform:translate(2px,2px);box-shadow:4px 4px 0 var(--night-deep)}
.btn--primary{background:var(--sand)}
.btn--ghost{
  background:transparent;color:var(--paper);
  border-color:rgba(244,241,236,.38);box-shadow:none;
}
.btn--ghost:hover{background:rgba(244,241,236,.1);border-color:var(--paper);transform:none;box-shadow:none}

.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  margin:0 0 22px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li+li::before{content:"/";margin-right:6px;color:var(--line)}
.crumbs a{color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}
.crumbs a:hover{color:var(--sand);border-color:var(--sand)}
.crumbs [aria-current="page"]{color:var(--ink);font-weight:600}

.seg{
  display:inline-flex;flex-wrap:wrap;gap:4px;
  padding:5px;
  border:2px solid var(--night-deep);border-radius:14px;background:var(--paper);
}
.band--night .seg,.band--deep .seg{border-color:rgba(244,241,236,.32);background:rgba(244,241,236,.06)}
.seg-btn{
  padding:10px 18px;border:0;border-radius:10px;background:transparent;
  font-size:14px;font-weight:700;color:inherit;cursor:pointer;
  transition:background var(--t-fast),color var(--t-fast);
}
.seg-btn:hover{background:rgba(14,27,42,.08)}
.band--night .seg-btn:hover,.band--deep .seg-btn:hover{background:rgba(244,241,236,.12)}
.seg-btn[aria-selected="true"]{background:var(--night-deep);color:var(--paper)}
.band--night .seg-btn[aria-selected="true"],.band--deep .seg-btn[aria-selected="true"]{background:var(--sand);color:var(--night-deep)}
.seg-panel[hidden]{display:none}

/* ---------- 06 头部悬浮胶囊 ---------- */
.capsule-nav{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:14px var(--pad) 0;
  pointer-events:none;
}
.skip-link{
  position:absolute;left:50%;top:6px;
  transform:translate(-50%,-180%);
  padding:10px 20px;border-radius:var(--r-pill);
  background:var(--sand);color:var(--night-deep);
  font-size:14px;font-weight:700;text-decoration:none;
  pointer-events:auto;z-index:5;
  transition:transform var(--t-fast);
}
.skip-link:focus{transform:translate(-50%,0)}

.capsule-inner{
  pointer-events:auto;
  display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  width:100%;max-width:1180px;margin-inline:auto;
  padding:9px 14px 9px 12px;
  background:rgba(14,27,42,.94);
  border:1.5px solid rgba(244,241,236,.14);
  border-radius:var(--r-pill);
  color:var(--paper);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:padding var(--t-fast),background var(--t-fast),box-shadow var(--t-fast),border-radius var(--t-fast);
}
.capsule-nav.is-condensed .capsule-inner{
  padding-block:5px;
  background:rgba(8,18,28,.985);
  border-color:rgba(244,241,236,.2);
  box-shadow:0 14px 30px -22px rgba(0,0,0,.9);
}

.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;text-decoration:none;color:inherit}
.brand-mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:36px;height:36px;border-radius:11px;
  background:var(--sand);color:var(--night-deep);
  font-family:var(--font-display);font-weight:900;font-size:20px;line-height:1;
  box-shadow:3px 3px 0 var(--night-deep);
  transition:transform var(--t-fast);
}
.brand:hover .brand-mark{transform:translate(-1px,-1px)}
.brand-name{
  display:block;
  font-family:var(--font-display);font-weight:800;font-stretch:85%;
  font-size:19px;line-height:1;letter-spacing:.02em;white-space:nowrap;
}
.brand-tag{
  display:block;margin-top:3px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:rgba(244,241,236,.55);white-space:nowrap;
}

.nav{flex:1 1 auto;min-width:0}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-link{
  display:block;padding:9px 12px;border-radius:var(--r-pill);
  font-size:14px;letter-spacing:.02em;white-space:nowrap;
  color:rgba(244,241,236,.78);text-decoration:none;
  transition:background var(--t-fast),color var(--t-fast);
}
.nav-link:hover{background:rgba(244,241,236,.1);color:var(--paper)}
.nav-link[aria-current="page"]{background:var(--sand);color:var(--night-deep);font-weight:700}

.capsule-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.index-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--r-pill);
  border:1.5px solid rgba(242,179,61,.6);background:transparent;
  color:var(--amber);font-size:13px;font-weight:700;letter-spacing:.08em;
  cursor:pointer;white-space:nowrap;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.index-trigger::before{
  content:"";width:7px;height:7px;flex:0 0 auto;
  background:currentColor;border-radius:2px;transform:rotate(45deg);
}
.index-trigger:hover,.index-trigger[aria-expanded="true"]{background:var(--amber);color:var(--night-deep);border-color:var(--amber)}

.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:36px;padding:0;
  border:1.5px solid rgba(244,241,236,.3);border-radius:12px;
  background:transparent;color:var(--paper);cursor:pointer;
  transition:border-color var(--t-fast),background var(--t-fast);
}
.nav-toggle:hover{background:rgba(244,241,236,.1);border-color:var(--paper)}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  display:block;width:16px;height:2px;background:currentColor;
  transition:transform var(--t-fast),background var(--t-fast);
}
.nav-toggle-bars{position:relative}
.nav-toggle-bars::before{content:"";position:absolute;top:-5px;left:0}
.nav-toggle-bars::after{content:"";position:absolute;top:5px;left:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg)}

.index-panel{
  pointer-events:auto;
  width:100%;max-width:1180px;margin:10px auto 0;
  padding:clamp(16px,2.4vw,26px);
  background:var(--night-deep);
  border:1.5px solid rgba(244,241,236,.16);
  border-radius:22px;
  color:var(--paper);
  box-shadow:0 26px 50px -34px rgba(0,0,0,.95);
}
.index-panel[hidden]{display:none}
.index-panel-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:14px;
  border-bottom:1px dashed rgba(244,241,236,.2);
}
.index-panel-title{
  margin:0;font-family:var(--font-display);font-stretch:85%;
  font-size:20px;font-weight:800;letter-spacing:.04em;
}
.index-panel-hint{margin:0;font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--muted)}
.index-list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.index-item a{
  display:block;height:100%;padding:14px;
  border:1.5px solid rgba(244,241,236,.18);border-radius:14px;
  text-decoration:none;color:var(--paper);
  transition:border-color var(--t-fast),background var(--t-fast),transform var(--t-fast);
}
.index-item a:hover{border-color:var(--sand);background:rgba(232,106,44,.14);transform:translateY(-2px)}
.index-num{display:block;margin-bottom:7px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--amber)}
.index-name{display:block;font-family:var(--font-display);font-stretch:85%;font-size:17px;font-weight:800;letter-spacing:.02em}
.index-desc{display:block;margin-top:5px;font-size:12.5px;line-height:1.5;color:rgba(244,241,236,.6)}

.scroll-meter{
  position:absolute;left:50%;bottom:-8px;transform:translateX(-50%);
  width:min(1160px,calc(100% - 32px));height:3px;
  background:rgba(244,241,236,.14);border-radius:2px;overflow:hidden;
  pointer-events:none;
}
.scroll-meter span{
  display:block;width:0;height:100%;
  background:linear-gradient(90deg,var(--sand),var(--amber));
}

/* ---------- 07 页脚三带 ---------- */
.site-foot{
  background:var(--night-deep);color:var(--paper);
  border-top:3px solid var(--sand);
  font-size:15px;
}
.site-foot a{color:inherit}
.foot-strip{padding-block:clamp(40px,5vw,70px)}
.foot-strip--kit{background:var(--night)}
.foot-strip--index,.foot-strip--meta{border-top:1px solid rgba(244,241,236,.12)}
.foot-strip--meta{padding-bottom:clamp(28px,3.4vw,46px)}

.strip-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:clamp(12px,2vw,28px);margin-bottom:clamp(20px,3vw,36px)}
.strip-title{margin:0;font-size:clamp(24px,3vw,40px);letter-spacing:.01em}

.kit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(14px,2vw,24px)}
.kit-card{
  padding:clamp(18px,2.2vw,26px);
  background:var(--night-deep);
  border:2px solid rgba(244,241,236,.16);border-radius:4px;
  box-shadow:8px 8px 0 rgba(232,106,44,.18);
  transition:border-color var(--t-fast),transform var(--t-fast),box-shadow var(--t-fast);
}
.kit-card:hover{border-color:var(--sand);transform:translateY(-3px);box-shadow:8px 8px 0 rgba(232,106,44,.34)}
.kit-num{display:block;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--amber)}
.kit-title{margin:10px 0 8px;font-size:20px;letter-spacing:.02em}
.kit-text{margin:0 0 16px;font-size:14.5px;line-height:1.6;color:rgba(244,241,236,.7)}
.kit-link{
  display:inline-flex;align-items:center;gap:8px;
  padding-bottom:2px;
  font-size:13px;font-weight:700;letter-spacing:.06em;
  color:var(--sand);text-decoration:none;border-bottom:1.5px solid var(--sand);
  transition:color var(--t-fast),border-color var(--t-fast);
}
.kit-link::after{content:"→";font-family:var(--font-mono)}
.kit-link:hover{color:var(--amber);border-color:var(--amber)}

.index-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:clamp(18px,3vw,44px)}
.foot-group-title{
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted);
}
.foot-links{display:grid;gap:8px}
.foot-links a{
  display:inline-block;
  font-size:14.5px;text-decoration:none;
  color:rgba(244,241,236,.82);
  border-bottom:1.5px solid transparent;
  transition:color var(--t-fast),border-color var(--t-fast);
}
.foot-links a:hover{color:var(--sand);border-color:var(--sand)}

.meta-grid{display:grid;grid-template-columns:1fr 1.5fr 1fr;gap:clamp(20px,3vw,46px)}
.meta-block{min-width:0}
.foot-brand{
  margin:0 0 10px;
  font-family:var(--font-display);font-stretch:85%;
  font-size:24px;font-weight:800;letter-spacing:.02em;
}
.meta-title{
  margin:0 0 10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--amber);
}
.meta-text{margin:0 0 8px;font-size:14px;line-height:1.6;color:rgba(244,241,236,.8);word-break:break-word}
.meta-key{
  display:inline-block;min-width:46px;margin-right:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted);
}
.meta-note{margin:10px 0 0;font-size:12.5px;line-height:1.6;color:var(--muted)}
.meta-list{display:grid;gap:8px}
.meta-list a{
  font-size:14px;text-decoration:none;color:rgba(244,241,236,.82);
  border-bottom:1.5px solid transparent;
  transition:color var(--t-fast),border-color var(--t-fast);
}
.meta-list a:hover{color:var(--sand);border-color:var(--sand)}
.foot-bottom{
  margin:clamp(28px,4vw,46px) 0 0;padding-top:18px;
  border-top:1px solid rgba(244,241,236,.12);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
}

/* ---------- 08 图片容器 ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  background:var(--night-deep);
  border:2px solid var(--night-deep);
  box-shadow:var(--shadow-sand);
}
.media-frame img{display:block;width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.05)}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--panorama{aspect-ratio:21/9}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--mint{box-shadow:8px 8px 0 var(--mint)}
.media-frame--flat{box-shadow:none}
.media-frame__cap{
  position:absolute;left:0;bottom:0;
  padding:8px 12px;
  background:rgba(8,18,28,.84);color:var(--paper);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
}

/* ---------- 09 动效 ---------- */
.reveal{
  opacity:0;transform:translateX(-22px);
  transition:opacity var(--t-mid),transform var(--t-mid);
}
.reveal--right{transform:translateX(22px)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- 10 响应式与降级 ---------- */
@media (max-width:1180px){
  .brand-tag{display:none}
  .nav-link{padding:9px 10px;font-size:13.5px}
}

@media (max-width:980px){
  body{padding-top:80px}
  #main-content{scroll-margin-top:92px}

  .capsule-inner{flex-wrap:wrap;border-radius:24px}
  .nav-toggle{display:inline-flex}
  .nav{order:3;flex:0 0 100%;display:none;min-width:0}
  .capsule-nav[data-open] .nav{display:block}
  .capsule-actions{order:2;margin-left:auto}
  .nav-list{
    flex-direction:column;align-items:stretch;gap:2px;
    margin-top:10px;padding-top:10px;
    border-top:1px solid rgba(244,241,236,.14);
  }
  .nav-link{padding:12px 14px;font-size:15px;border-radius:12px}
  .index-list{grid-template-columns:repeat(2,1fr)}
  .brand-name{font-size:18px}

  .split--5-7,.split--7-5,.split--4-8,.split--3-9{grid-template-columns:1fr}
  .kit-grid{grid-template-columns:1fr 1fr}
  .meta-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:720px){
  body{font-size:16px}
  .capsule-nav{padding-top:10px}
  .capsule-inner{padding:9px 12px}
  .brand-mark{width:32px;height:32px;font-size:18px}
  .brand-name{font-size:16px}
  .index-trigger{padding:9px 12px;font-size:12px;letter-spacing:.04em}
  .index-list{grid-template-columns:1fr}
  .index-cols{grid-template-columns:1fr 1fr}
  .kit-grid{grid-template-columns:1fr}
  .meta-grid{grid-template-columns:1fr}
  .scroll-meter{bottom:-6px}
  .btn{width:100%;justify-content:center}
}

@media (max-width:420px){
  .brand-name{font-size:15px}
  .index-trigger::before{display:none}
  .index-cols{grid-template-columns:1fr}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    transition-duration:.01ms!important;
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
  }
  .reveal{opacity:1;transform:none}
  .btn:hover,.btn:active{transform:none;box-shadow:var(--shadow-hard)}
  .kit-card:hover{transform:none}
  .index-item a:hover{transform:none}
}