/* =========================================================
   嘉美体育 · 共享样式 /assets/site.css
   蓝图框架 + 暖沙基底 + 酒红轮次 + 青绿状态
   ========================================================= */

:root{
  --rock:#2E3238;
  --rock-mid:#6E747B;
  --sand:#E8D8BE;
  --sand-light:#F7EFE3;
  --wine:#7A1F3D;
  --wine-bright:#A63A5A;
  --river:#1F7A6B;
  --river-bright:#3BB7A0;
  --paper:#FCFAF6;
  --ink:#17191D;

  --line:rgba(46,50,56,.16);
  --line-strong:rgba(46,50,56,.32);
  --line-light:rgba(247,239,227,.16);
  --line-light-soft:rgba(247,239,227,.1);

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-numeric:"Archivo Black","Oswald","Noto Sans SC","Arial Narrow",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --font-index:"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;

  --header-h:74px;
  --maxw:1280px;
  --gutter:clamp(18px,4vw,52px);
  --ease:cubic-bezier(.22,1,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  color:var(--rock);
  background-color:var(--sand-light);
  background-image:linear-gradient(90deg,rgba(46,50,56,.055) 1px,transparent 1px);
  background-size:clamp(70px,7.5vw,112px) 100%;
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-display);font-weight:300;line-height:1.15;letter-spacing:.01em}
p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit}
table{border-collapse:collapse;width:100%}
[hidden]{display:none!important}

:focus-visible{outline:2px solid var(--river);outline-offset:3px}
.site-header :focus-visible{outline-color:var(--wine)}
.site-footer :focus-visible{outline-color:var(--river-bright)}
.site-nav[data-open] :focus-visible{outline-color:var(--river-bright)}

@media (min-width:768px){
  body{font-size:17px}
}

/* ---------- 文字系统 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.display{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(34px,6.4vw,86px);
  line-height:1.04;
  letter-spacing:.01em;
}
.num{
  font-family:var(--font-numeric);
  font-weight:900;
  font-size:inherit;
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
}
.num--slant{display:inline-block;transform:rotate(-4deg)}
.index-label{
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--rock-mid);
  text-transform:uppercase;
}
.serif-title{
  font-family:var(--font-serif);
  font-weight:600;
  letter-spacing:.01em;
  line-height:1.4;
}
.prose{max-width:68ch;font-size:1rem;line-height:1.85}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.6em;font-weight:300}
.prose p+p{margin-top:1em}
.prose ul,.prose ol{margin-top:1em;padding-left:1.3em;list-style:disc}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.4em}
.prose a{border-bottom:1px solid var(--wine-bright);color:var(--wine)}
.prose a:hover{color:var(--wine-bright)}
.hairline{height:1px;border:0;margin:0;background:var(--line)}

/* ---------- 分区与节奏 ---------- */
.section{padding-block:clamp(40px,6vw,84px)}
.band{position:relative}
.band--sand{background:var(--sand)}
.band--paper{background:var(--paper)}
.band--rock{background:var(--rock);color:var(--sand-light)}
.band--ink{background:var(--ink);color:var(--sand-light)}
.band--rock .index-label,.band--ink .index-label{color:rgba(247,239,227,.55)}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px 24px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line-strong);
}
.section-title{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(25px,3.6vw,44px);
  line-height:1.1;
  letter-spacing:.01em;
}
.section-index{
  font-family:var(--font-numeric);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--wine);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.6em;
  padding:13px 24px;
  border:1px solid transparent;
  border-radius:0;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.06em;
  line-height:1;
  text-align:center;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease;
}
.btn--primary{background:var(--wine);color:var(--paper);border-color:var(--wine)}
.btn--primary:hover{background:var(--wine-bright);border-color:var(--wine-bright)}
.btn--sand{background:var(--sand);color:var(--rock);border-color:var(--sand)}
.btn--sand:hover{background:var(--paper);border-color:var(--paper);color:var(--wine)}
.btn--ghost{background:transparent;color:var(--rock);border-color:var(--line-strong)}
.btn--ghost:hover{border-color:var(--rock);background:rgba(46,50,56,.06)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:.5em;
  padding:5px 10px;
  border:1px solid var(--line-strong);
  background:rgba(252,250,246,.72);
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.14em;
  line-height:1.4;
  color:var(--rock-mid);
}
.tag--wine{color:var(--wine);border-color:rgba(122,31,61,.35);background:rgba(122,31,61,.07)}
.tag--river{color:var(--river);border-color:rgba(31,122,107,.4);background:rgba(31,122,107,.08)}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-family:var(--font-index);font-size:11px;letter-spacing:.12em;color:var(--rock-mid)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item:not(:last-child)::after{content:"/";color:rgba(46,50,56,.3)}
.breadcrumb a{color:var(--rock-mid);border-bottom:1px solid transparent;transition:color .2s,border-color .2s}
.breadcrumb a:hover{color:var(--wine);border-bottom-color:var(--wine-bright)}
.breadcrumb-current{color:var(--rock);font-weight:600}

/* ---------- 栅格 ---------- */
.grid{display:grid;gap:clamp(18px,2.6vw,34px)}
.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))}
@media (min-width:861px) and (max-width:1100px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:860px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--sand);
}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  border:1px solid rgba(252,250,246,.28);
  pointer-events:none;
}
.media-badge{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:6px 10px;
  background:var(--rock);
  color:var(--sand-light);
  font-family:var(--font-numeric);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.2;
}

/* ---------- 章节索引（页面左侧跟随用） ---------- */
.chapter-link{
  position:relative;
  display:block;
  padding:8px 0 8px 16px;
  border-left:1px solid var(--line-strong);
  font-family:var(--font-index);
  font-size:13px;
  letter-spacing:.02em;
  color:var(--rock-mid);
  transition:color .2s ease,border-color .2s ease;
}
.chapter-link:hover{color:var(--rock)}
.chapter-link[aria-current]{color:var(--wine);border-left-color:var(--wine);font-weight:600}

/* ---------- 显现动画 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s ease,transform .6s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* =========================================================
   头部
   ========================================================= */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:300;
  padding:12px 20px;
  background:var(--rock);
  color:var(--paper);
  font-family:var(--font-index);
  font-size:13px;
  letter-spacing:.08em;
  transition:top .2s ease;
}
.skip-link:focus{top:14px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(247,239,227,.9);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line-strong);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,
    var(--wine) 0 24%,
    var(--rock) 24% 76%,
    var(--river) 76% 100%);
}
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  z-index:2;
  width:100%;
  height:2px;
  background:linear-gradient(90deg,var(--river),var(--river-bright));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .14s linear;
  pointer-events:none;
}

.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(12px,2.2vw,30px);
  width:100%;
  max-width:var(--maxw);
  min-height:var(--header-h);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;padding-block:10px}
.brand-mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  background:var(--rock);
  color:var(--sand-light);
  font-family:var(--font-numeric);
  font-size:17px;
  letter-spacing:.04em;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.2}
.brand-name{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:400;
  letter-spacing:.14em;
  color:var(--rock);
}
.brand-tagline{
  font-family:var(--font-index);
  font-size:10px;
  font-weight:500;
  letter-spacing:.1em;
  color:var(--rock-mid);
}

.site-nav{margin-left:auto}
.nav-list{display:flex;align-items:stretch;gap:2px}
.nav-item{display:flex}
.nav-link{
  position:relative;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:3px;
  padding:12px;
  color:var(--rock);
  transition:color .2s ease;
}
.nav-index{
  font-family:var(--font-numeric);
  font-size:10px;
  line-height:1;
  letter-spacing:.1em;
  color:var(--rock-mid);
  transition:color .2s ease;
}
.nav-label{font-size:14px;font-weight:500;line-height:1.2;letter-spacing:.06em;white-space:nowrap}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:2px;
  height:2px;
  background:var(--wine);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .3s var(--ease);
}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link:hover .nav-index{color:var(--wine-bright)}
.nav-link[aria-current="page"]{color:var(--wine)}
.nav-link[aria-current="page"] .nav-label{font-weight:600}
.nav-link[aria-current="page"] .nav-index{color:var(--wine-bright)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--wine)}

.header-aside{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border:1px solid var(--line);
  background:rgba(252,250,246,.66);
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.06em;
  line-height:1.5;
  color:var(--rock-mid);
  white-space:nowrap;
}
.status-dot{
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--river-bright);
  animation:pulse 1.6s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(59,183,160,.5)}
  70%{box-shadow:0 0 0 9px rgba(59,183,160,0)}
  100%{box-shadow:0 0 0 0 rgba(59,183,160,0)}
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 13px;
  border:1px solid var(--line-strong);
  background:rgba(252,250,246,.6);
  color:var(--rock);
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.14em;
  transition:background-color .2s ease,border-color .2s ease;
}
.nav-toggle:hover{background:rgba(46,50,56,.07);border-color:var(--rock)}
.nav-toggle-bars{display:grid;gap:4px;width:18px}
.nav-toggle-bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .3s var(--ease),opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg)}

.nav-backdrop{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  top:var(--header-h);
  z-index:85;
  display:none;
  background:rgba(23,25,29,.55);
  opacity:0;
  visibility:hidden;
  transition:opacity .3s ease,visibility 0s linear .3s;
}
.nav-backdrop[data-open]{opacity:1;visibility:visible;transition-delay:0s}

.to-top{
  position:fixed;
  right:clamp(16px,3vw,34px);
  bottom:clamp(16px,3vw,34px);
  z-index:70;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  width:54px;
  height:54px;
  border:1px solid rgba(247,239,227,.22);
  background:rgba(46,50,56,.94);
  color:var(--sand-light);
  transition:background-color .25s ease;
}
.to-top::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--river-bright);
}
.to-top:not([hidden]){animation:toTopIn .34s var(--ease)}
.to-top:hover{background:var(--wine)}
.to-top-icon{font-family:var(--font-numeric);font-size:16px;line-height:1}
.to-top-text{font-family:var(--font-index);font-size:9px;letter-spacing:.14em;line-height:1}
@keyframes toTopIn{
  from{opacity:0;transform:translateY(10px)}
  to{opacity:1;transform:none}
}

/* ---------- 平板与手机 ---------- */
@media (max-width:1180px){
  .status-pill{display:none}
}
@media (max-width:1100px){
  .brand-tagline{display:none}
}

@media (max-width:1023px){
  :root{--header-h:64px}

  .brand-mark{width:38px;height:38px;font-size:15px}
  .brand-name{font-size:18px;letter-spacing:.1em}
  .brand-tagline{display:none}
  .header-aside{margin-left:auto}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    top:var(--header-h);
    right:0;
    bottom:0;
    left:auto;
    z-index:90;
    display:flex;
    flex-direction:column;
    width:min(88vw,380px);
    margin-left:0;
    padding:28px var(--gutter) 36px;
    background:rgba(23,25,29,.97);
    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);
    border-left:1px solid rgba(247,239,227,.14);
    overflow-y:auto;
    transform:translateX(100%);
    visibility:hidden;
    transition:transform .42s var(--ease),visibility 0s linear .42s;
  }
  .site-nav[data-open]{
    transform:translateX(0);
    visibility:visible;
    transition-delay:0s,0s;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item{display:block}
  .nav-link{
    flex-direction:row;
    align-items:baseline;
    gap:14px;
    padding:18px 0;
    color:var(--sand-light);
    border-bottom:1px solid rgba(247,239,227,.12);
  }
  .nav-index{font-size:12px;color:var(--river-bright)}
  .nav-label{font-size:19px;font-weight:300;letter-spacing:.08em;white-space:normal}
  .nav-link::after{left:0;right:auto;bottom:8px;width:26px;background:var(--wine-bright)}
  .nav-link:hover,.nav-link[aria-current="page"]{color:var(--paper)}
  .nav-link:hover .nav-index,.nav-link[aria-current="page"] .nav-index{color:var(--wine-bright)}
  .nav-link[aria-current="page"] .nav-label{font-weight:600}

  .nav-backdrop{display:block}
  body.nav-open{overflow:hidden}
}

@media (max-width:560px){
  .brand-mark{width:34px;height:34px;font-size:13px}
  .brand-name{font-size:16px}
  .to-top{width:46px;height:46px}
}

/* =========================================================
   页脚 · 补给站
   ========================================================= */
.site-footer{
  position:relative;
  background:var(--ink);
  color:rgba(247,239,227,.82);
  font-size:14px;
  line-height:1.75;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,
    var(--river) 0 22%,
    var(--sand) 22% 36%,
    var(--wine) 36% 100%);
}
.footer-inner{
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) clamp(20px,3vw,30px);
}

.footer-top{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px 30px;
  padding-bottom:clamp(20px,3vw,28px);
  border-bottom:1px solid var(--line-light);
}
.footer-brand-name{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(28px,4.4vw,46px);
  line-height:1;
  letter-spacing:.16em;
  color:var(--paper);
}
.footer-brand-note{
  margin-top:10px;
  font-family:var(--font-index);
  font-size:11px;
  letter-spacing:.18em;
  color:rgba(247,239,227,.5);
}
.footer-top-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px 18px}
.station-title{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.32em;
  color:var(--river-bright);
}
.station-title::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--river-bright);
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr)) 1.4fr;
  gap:clamp(22px,3vw,40px);
  padding-block:clamp(26px,3.6vw,42px);
}
.footer-col-title{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
  font-family:var(--font-index);
  font-size:11px;
  font-weight:500;
  letter-spacing:.2em;
  color:rgba(247,239,227,.5);
}
.footer-col-title::after{
  content:"";
  flex:1;
  height:1px;
  background:rgba(247,239,227,.14);
}
.footer-col--contact .footer-col-title::after{background:rgba(59,183,160,.4)}

.footer-list li+li{margin-top:1px}
.footer-link{
  display:inline-block;
  padding-block:6px;
  border-bottom:1px solid transparent;
  color:rgba(247,239,227,.82);
  font-size:14px;
  letter-spacing:.02em;
  transition:color .2s ease,border-color .2s ease;
}
.footer-link:hover{color:var(--river-bright);border-bottom-color:rgba(59,183,160,.5)}

.footer-contact{font-size:13.5px}
.contact-row{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:10px;
  padding-block:7px;
  border-bottom:1px dashed rgba(247,239,227,.12);
}
.contact-label{
  padding-top:3px;
  font-family:var(--font-index);
  font-size:10px;
  letter-spacing:.14em;
  color:rgba(247,239,227,.45);
}
.contact-value{color:var(--paper);word-break:break-word}
.contact-note{
  margin-top:12px;
  font-size:12px;
  line-height:1.7;
  color:rgba(247,239,227,.48);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 22px;
  padding-top:clamp(16px,2.4vw,24px);
  border-top:1px solid var(--line-light);
  font-family:var(--font-index);
  font-size:11px;
  letter-spacing:.08em;
  color:rgba(247,239,227,.48);
}
.legal-item{white-space:nowrap}
.legal-links{display:flex;flex-wrap:wrap;gap:16px;margin-left:auto}
.legal-link{
  color:rgba(247,239,227,.7);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.legal-link:hover{color:var(--river-bright);border-bottom-color:rgba(59,183,160,.5)}

@media (max-width:1023px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--contact{grid-column:1 / -1}
}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr}
  .footer-col--contact{grid-column:auto}
  .footer-top-actions{width:100%}
  .legal-links{margin-left:0;width:100%}
}

/* =========================================================
   减速与无障碍
   ========================================================= */
@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!important;transform:none!important}
  .scroll-progress{transition:none}
}