/* ============================================================
   金莎体育主站 · 共享样式 /assets/site.css
   结构：令牌 → 重置 → 基础排版 → 版式与组件 → 页头 → 页脚
   ============================================================ */

:root{
  --deep:#0B1F3A;
  --night:#071426;
  --glass:#173B66;
  --cyan:#2E6F9E;
  --gold:#D8A94E;
  --gold-soft:#F2D28A;
  --ember:#E4572E;
  --alert:#C7352A;
  --ice:#F6F8FB;
  --ink:#14243B;
  --line:#2A4A6B;

  --rail-w:250px;
  --shell:1180px;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --dur:220ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow-lift:0 18px 44px -24px rgba(7,20,38,.8);
}

/* ---------------- 重置 ---------------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:88px;
}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------------- 基础中文排版 ---------------- */
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--ice);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(2.2rem,4.4vw,3.4rem);font-weight:300}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:600}
h3{font-size:clamp(1.1rem,1.6vw,1.3rem);font-weight:600}
h4{font-size:1rem;font-weight:600}
p{max-width:66ch}
strong{font-weight:600}

:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:2px}
.site-footer :focus-visible{outline-color:var(--gold-soft)}

/* ---------------- 版式容器与节奏 ---------------- */
.wrap{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,48px);
}
.section{padding-block:clamp(44px,7vw,92px)}
.section--deep{
  background:linear-gradient(158deg,var(--deep) 0%,var(--night) 78%);
  color:#D9E3EE;
}
.section--deep h1,.section--deep h2,.section--deep h3{color:#fff}
.section--ice{background:var(--ice);color:var(--ink)}

.split{display:grid;gap:clamp(22px,3.4vw,46px);grid-template-columns:minmax(0,1fr)}
@media (min-width:1024px){
  .split{grid-template-columns:minmax(0,7fr) minmax(0,3fr);align-items:start}
}

/* ---------------- 标题体系 ---------------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--gold);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--gold);flex:0 0 auto}

.display{
  font-size:clamp(2.6rem,7vw,6.2rem);
  font-weight:300;
  line-height:1.02;
  letter-spacing:-.025em;
}
.display strong{font-weight:700}

.lede{
  font-size:clamp(1rem,1.1vw,1.15rem);
  line-height:1.85;
  max-width:52ch;
  color:rgba(20,36,59,.82);
}
.section--deep .lede{color:rgba(217,227,238,.84)}

.rule-gold{
  display:block;border:0;width:64px;height:2px;margin:0;
  background:linear-gradient(90deg,var(--gold),rgba(216,169,78,0));
}

.mono{font-family:var(--font-mono);letter-spacing:.06em}
.num{font-family:var(--font-mono);font-weight:600;color:var(--gold);font-variant-numeric:tabular-nums}

/* ---------------- 按钮 ---------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;
  font-size:14px;font-weight:600;letter-spacing:.04em;
  text-decoration:none;border:1px solid transparent;border-radius:2px;
  cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn--accent{background:var(--ember);color:#fff}
.btn--accent:hover{background:#ef6a3f;transform:translateY(-1px)}
.btn--gold{background:linear-gradient(180deg,var(--gold-soft),var(--gold));color:var(--night)}
.btn--gold:hover{transform:translateY(-1px);filter:brightness(1.04)}
.btn--ghost{background:transparent;color:var(--ice);border-color:rgba(216,169,78,.55)}
.btn--ghost:hover{background:rgba(216,169,78,.1);border-color:var(--gold);color:var(--gold-soft)}

/* ---------------- 面板 / 标签 / 面包屑 ---------------- */
.panel{
  background:#fff;
  border:1px solid rgba(42,74,107,.2);
  border-radius:3px;
  padding:clamp(18px,2.4vw,28px);
}
.panel--glass{
  background:rgba(23,59,102,.55);
  border:1px solid rgba(216,169,78,.24);
  border-radius:3px;
  padding:clamp(18px,2.4vw,28px);
  color:#E6EEF7;
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow-lift);
}
.panel--glass h3{color:#fff}

.tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.1em;
  padding:2px 9px;
  border:1px solid rgba(46,111,158,.6);
  border-radius:999px;
  color:var(--cyan);
}
.tag--accent{color:var(--ember);border-color:rgba(228,87,46,.62)}

.breadcrumb{
  display:flex;flex-wrap:wrap;gap:6px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.08em;
  color:rgba(20,36,59,.6);
}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li+li::before{content:"/";color:rgba(42,74,107,.45)}
.breadcrumb a{text-decoration:none;transition:color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb [aria-current="page"]{color:var(--ink)}
.section--deep .breadcrumb{color:rgba(217,227,238,.65)}
.section--deep .breadcrumb [aria-current="page"]{color:#fff}

/* ---------------- 图片容器（页面阶段放占位图） ---------------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:3px;
  border:1px solid rgba(42,74,107,.35);
  background:linear-gradient(140deg,var(--glass),var(--night));
  aspect-ratio:16/9;
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-family:var(--font-mono);
  font-size:12px;letter-spacing:.06em;
  color:#E6EEF7;
  background:linear-gradient(0deg,rgba(7,20,38,.88),rgba(7,20,38,0));
}

/* ---------------- 分段切换（可访问标签页） ---------------- */
.tabset{display:block}
.tablist{
  display:flex;flex-wrap:wrap;gap:4px;
  border-bottom:1px solid rgba(42,74,107,.25);
  margin-bottom:clamp(18px,3vw,28px);
}
.tab{
  position:relative;
  padding:10px 14px;
  font-size:14px;letter-spacing:.04em;
  color:rgba(20,36,59,.68);
  border-bottom:2px solid transparent;
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tab:hover{color:var(--ink)}
.tab[aria-selected="true"]{color:var(--deep);border-bottom-color:var(--gold);font-weight:600}
.tabpanel{padding-block:4px}
.tabpanel[hidden]{display:none}
.section--deep .tablist{border-bottom-color:rgba(216,169,78,.24)}
.section--deep .tab{color:rgba(217,227,238,.7)}
.section--deep .tab:hover{color:#fff}
.section--deep .tab[aria-selected="true"]{color:var(--gold-soft)}

/* ---------------- 滚动显现协议 ---------------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 260ms var(--ease),transform 260ms var(--ease);
}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ============================================================
   页头：桌面左侧轨道 / 移动品牌条 + 抽屉
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px;
  padding:12px clamp(14px,4vw,26px);
  background:linear-gradient(180deg,var(--deep) 0%,var(--night) 100%);
  color:#E6EEF7;
  border-bottom:1px solid rgba(216,169,78,.2);
}

/* 抽屉遮罩 */
.site-header[data-open]::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:85;
  background:rgba(7,20,38,.62);
  backdrop-filter:blur(2px);
  -webkit-backdrop-filter:blur(2px);
}

.skip-link{
  position:fixed;
  z-index:200;
  top:-110px;
  left:16px;
  padding:10px 18px;
  background:var(--gold);
  color:var(--night);
  font-weight:600;
  font-size:14px;
  text-decoration:none;
  border-radius:2px;
  box-shadow:var(--shadow-lift);
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:16px}

.rail-head{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:inherit;
}
.brand-mark{display:flex;align-items:flex-end;gap:3px;width:26px;height:26px;flex:0 0 auto}
.brand-mark__bar{display:block;width:6px;border-radius:1px}
.brand-mark__bar:nth-child(1){height:15px;background:linear-gradient(180deg,var(--gold-soft),var(--gold))}
.brand-mark__bar:nth-child(2){height:26px;background:linear-gradient(180deg,#ffffff,var(--gold-soft))}
.brand-mark__bar:nth-child(3){height:10px;background:var(--ember)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.06em;color:#fff}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--gold)}

.brand-tagline{
  display:none;
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(217,227,238,.72);
  max-width:none;
}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:8px 12px;
  color:var(--gold-soft);
  border:1px solid rgba(216,169,78,.45);
  border-radius:2px;
  cursor:pointer;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:rgba(216,169,78,.12);border-color:var(--gold)}
.nav-toggle__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{
  display:block;height:2px;background:currentColor;border-radius:1px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.site-header[data-open] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 抽屉 / 轨道共用的导航面板 */
.nav-panel{
  position:fixed;
  z-index:90;
  top:0;left:0;bottom:0;
  width:min(86vw,340px);
  max-width:340px;
  padding:22px 18px 32px;
  display:flex;
  flex-direction:column;
  gap:22px;
  overflow-y:auto;
  background:linear-gradient(158deg,var(--deep) 0%,var(--night) 72%);
  border-right:1px solid rgba(216,169,78,.24);
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.site-header[data-open] .nav-panel{transform:translateX(0);visibility:visible}

.nav-panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(216,169,78,.22);
}
.nav-panel__label{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.24em;
  color:var(--gold);
}
.nav-close{
  display:inline-flex;align-items:center;
  padding:6px 12px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.14em;
  color:var(--gold-soft);
  border:1px solid rgba(216,169,78,.45);
  border-radius:2px;
  cursor:pointer;
}
.nav-close:hover{background:rgba(216,169,78,.14);border-color:var(--gold)}

.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-item{list-style:none}
.nav-link{
  display:flex;
  align-items:center;
  gap:12px;
  padding:9px 10px;
  font-size:15px;
  letter-spacing:.02em;
  text-decoration:none;
  color:#C9D6E4;
  border-left:2px solid transparent;
  border-radius:0 2px 2px 0;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.nav-link:hover{
  color:var(--gold-soft);
  background:rgba(216,169,78,.08);
  border-left-color:rgba(216,169,78,.5);
  transform:translateX(2px);
}
.nav-link[aria-current="page"]{
  color:#fff;
  background:linear-gradient(90deg,rgba(216,169,78,.18),rgba(216,169,78,0));
  border-left-color:var(--gold);
}
.nav-link__index{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--gold);
  flex:0 0 auto;
}
.nav-link__text{flex:1 1 auto}

.quick-actions{
  display:flex;
  flex-direction:column;
  gap:8px;
  padding-top:16px;
  border-top:1px solid rgba(216,169,78,.18);
}
.quick-actions__label{
  font-family:var(--font-mono);
  font-size:10px;letter-spacing:.22em;
  color:rgba(242,210,138,.72);
  margin-bottom:2px;
}
.quick-link{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:8px 12px;
  font-size:13px;
  text-decoration:none;
  color:var(--ice);
  background:rgba(23,59,102,.55);
  border:1px solid rgba(46,111,158,.5);
  border-radius:2px;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.quick-link::after{content:"→";font-family:var(--font-mono);font-size:12px;color:rgba(216,169,78,.8)}
.quick-link:hover{background:rgba(23,59,102,.9);border-color:var(--gold);color:#fff}
.quick-link--accent{
  background:var(--ember);
  border-color:var(--ember);
  color:#fff;
  font-weight:600;
}
.quick-link--accent::after{color:#fff}
.quick-link--accent:hover{background:#ef6a3f;border-color:#ef6a3f}

.rail-foot{display:none}
.rail-note{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:rgba(217,227,238,.6)}
.rail-mark{
  display:none;
  writing-mode:vertical-rl;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.32em;
  color:rgba(216,169,78,.5);
}

/* ---------------- 桌面轨道 ---------------- */
@media (min-width:1024px){
  html{scroll-padding-top:24px}
  body{padding-left:var(--rail-w)}

  .site-header{
    position:fixed;
    inset:0 auto 0 0;
    width:var(--rail-w);
    flex-direction:column;
    flex-wrap:nowrap;
    align-items:stretch;
    gap:26px;
    padding:30px 22px 24px;
    border-bottom:0;
    border-right:1px solid rgba(216,169,78,.22);
    overflow-y:auto;
  }
  .site-header[data-open]::after{content:none}

  .rail-head{flex-direction:column;align-items:flex-start;gap:10px}
  .brand-tagline{display:block}
  .nav-toggle{display:none}

  .nav-panel{
    position:static;
    transform:none;
    visibility:visible;
    width:auto;
    max-width:none;
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    overflow:visible;
    flex:1 1 auto;
    gap:20px;
  }
  .nav-panel__head{border-bottom:0;padding-bottom:0}
  .nav-close{display:none}

  .rail-foot{
    display:flex;
    align-items:flex-end;
    justify-content:space-between;
    gap:12px;
    margin-top:auto;
    padding-top:16px;
    border-top:1px solid rgba(216,169,78,.18);
  }
}

@media (min-width:1280px){
  .rail-mark{display:block}
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  background:linear-gradient(165deg,var(--night) 0%,var(--deep) 58%,#0A2440 100%);
  color:#C9D6E4;
  border-top:1px solid rgba(216,169,78,.22);
  padding:clamp(40px,6vw,76px) clamp(18px,4vw,48px) 26px;
  font-size:14px;
  line-height:1.75;
}

.footer-inner{
  max-width:var(--shell);
  margin-inline:auto;
  display:grid;
  gap:clamp(26px,4vw,44px);
  grid-template-columns:minmax(0,1fr);
}
@media (min-width:720px){
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:1080px){
  .footer-inner{
    grid-template-columns:1.6fr .9fr .9fr 1.3fr;
    gap:clamp(28px,3vw,52px);
  }
}

.footer-brand{display:flex;flex-direction:column;gap:14px}
.brand--footer .brand-name{font-size:17px}
.brand--footer .brand-sub{color:var(--gold-soft)}
.footer-summary{max-width:34ch;color:#CBD8E6;line-height:1.85;font-size:14px}
.footer-update{
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.08em;line-height:1.8;
  color:rgba(242,210,138,.85);
  border-left:2px solid var(--gold);
  padding-left:10px;
  max-width:34ch;
}

.footer-col{display:flex;flex-direction:column}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:11px;font-weight:400;letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.footer-col__title::before{content:"";width:14px;height:2px;background:var(--gold);flex:0 0 auto}

.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-link{
  display:inline-block;
  font-size:14px;
  color:#C9D6E4;
  text-decoration:none;
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-link:hover,.footer-link:focus-visible{color:var(--gold-soft);transform:translateX(3px)}
.footer-link--legal{font-size:13px;color:rgba(201,214,228,.82)}

.footer-contact{gap:0}
.contact-line{
  display:flex;
  gap:10px;
  align-items:flex-start;
  margin-bottom:8px;
  line-height:1.65;
  max-width:none;
}
.contact-line__label{
  flex:0 0 auto;
  min-width:34px;
  padding-top:3px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  color:var(--gold);
}
.contact-line__value{color:#DCE6F1;font-size:14px}

.contact-copy{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:4px 0 14px;
  padding:7px 14px;
  font-family:var(--font-mono);
  font-size:11px;letter-spacing:.12em;
  color:var(--gold-soft);
  background:rgba(23,59,102,.5);
  border:1px solid rgba(216,169,78,.55);
  border-radius:2px;
  cursor:pointer;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease);
}
.contact-copy:hover{background:rgba(216,169,78,.16);border-color:var(--gold);color:#fff}
.contact-copy.is-copied{background:var(--gold);border-color:var(--gold);color:var(--night);font-weight:600}

.footer-note{
  font-size:12px;
  line-height:1.8;
  color:rgba(201,214,228,.68);
  margin-top:6px;
  max-width:36ch;
}

.footer-bottom{
  max-width:var(--shell);
  margin:clamp(30px,4.4vw,52px) auto 0;
  padding-top:20px;
  border-top:1px solid rgba(216,169,78,.18);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  font-size:12px;
  color:rgba(201,214,228,.7);
}
.footer-copy,.footer-icp{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  max-width:none;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:16px;
  margin-left:auto;
}

/* ---------------- 减弱动效 ---------------- */
@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]{opacity:1;transform:none}
  .nav-panel{transition:none}
  .footer-link:hover,.nav-link:hover{transform:none}
}