/* ==========================================================================
   悦盈稳当 · 共享样式表 /assets/site.css
   指挥中心深墨绿 × 荧光青 × 琥珀金 —— 夜间球场灯光与数据仪表盘
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#061C18;
  --ink-2:#0B2E28;
  --panel:#12463C;
  --cyan:#2FE3C8;
  --cyan-soft:#7BF3E0;
  --amber:#F2B443;
  --amber-soft:#FFD98A;
  --paper:#F7FAF8;
  --paper-ink:#08201C;
  --fog:#E8F3EF;
  --muted:#9FB8B1;
  --coral:#FF6B57;

  --line-cyan:rgba(47,227,200,.22);
  --line-cyan-soft:rgba(47,227,200,.12);
  --line-muted:rgba(159,184,177,.22);
  --line-paper:rgba(8,32,28,.12);

  --font-display:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-body:system-ui,-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"JetBrains Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --radius-s:8px;
  --radius:14px;
  --radius-lg:22px;
  --pill:999px;

  --container:1280px;
  --ease:cubic-bezier(.22,1,.36,1);
  --shadow-panel:0 30px 64px -44px rgba(0,0,0,.95);
  --shadow-paper:0 26px 44px -32px rgba(0,0,0,.85);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  background:var(--ink);
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  min-height:100vh;
  background:transparent;
  color:var(--fog);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
/* 夜间球场灯光层：缓慢流动的多层柔和渐变 */
body::before{
  content:"";
  position:fixed;
  inset:-25%;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(52% 44% at 10% 4%, rgba(47,227,200,.16), transparent 62%),
    radial-gradient(46% 38% at 92% 12%, rgba(242,180,67,.11), transparent 66%),
    radial-gradient(70% 58% at 46% 104%, rgba(11,46,40,.92), transparent 72%);
  animation:yy-drift 18s var(--ease) infinite alternate;
}
@keyframes yy-drift{
  0%{transform:translate3d(0,0,0) scale(1)}
  100%{transform:translate3d(-2.4%,1.6%,0) scale(1.06)}
}
img,svg,video{max-width:100%;display:block}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,p{margin:0}
h1,h2,h3,h4{font-weight:800;line-height:1.18}
a{color:var(--cyan)}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
hr{border:0}
:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 3. 排版基础 ---------- */
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  letter-spacing:-.02em;
  line-height:1.04;
  color:var(--fog);
}
.lede{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.72;
  color:rgba(232,243,239,.86);
  max-width:60ch;
}
.eyebrow{
  font-size:12px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--muted);
}
.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.num--cyan{color:var(--cyan)}
.num--amber{color:var(--amber)}
.muted{color:var(--muted)}

.prose{
  max-width:68ch;
  font-size:17px;
  line-height:1.8;
  color:rgba(232,243,239,.9);
}
.prose p{margin:0 0 1.1em}
.prose h2{
  font-size:clamp(26px,3vw,36px);
  margin:1.7em 0 .55em;
  letter-spacing:-.02em;
  color:var(--fog);
}
.prose h3{
  font-size:clamp(19px,2vw,23px);
  margin:1.4em 0 .45em;
  color:var(--fog);
}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.3em}
.prose li{margin:.35em 0}
.prose strong{color:var(--amber-soft);font-weight:700}
.prose a{color:var(--cyan);text-decoration-thickness:1px;text-underline-offset:3px}
.prose code{
  font-family:var(--font-mono);
  font-size:.9em;
  background:rgba(47,227,200,.1);
  border:1px solid var(--line-cyan-soft);
  border-radius:6px;
  padding:2px 6px;
}

/* ---------- 4. 布局骨架 ---------- */
.container{
  width:100%;
  max-width:var(--container);
  margin-inline:auto;
  padding-inline:clamp(18px,4vw,40px);
}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(26px,4vw,52px)}
.band{
  height:2px;
  margin-block:clamp(32px,5vw,64px);
  background:linear-gradient(90deg,var(--cyan),var(--amber) 55%,transparent);
  opacity:.55;
}
.grid{display:grid;gap:clamp(18px,2.6vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--aside{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--aside-wide{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}

/* ---------- 5. 章标 / 展签 / 面板 ---------- */
.chapter{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:clamp(18px,2.6vw,28px);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
}
.chapter-num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  letter-spacing:.08em;
  padding:4px 10px;
  border:1px solid var(--line-cyan);
  border-radius:var(--radius-s);
  background:rgba(47,227,200,.08);
  color:var(--cyan);
}
.chapter-title{
  font-size:12px;
  letter-spacing:.16em;
  color:var(--muted);
}
.chapter::after{
  content:"";
  flex:1;
  height:1px;
  background:linear-gradient(90deg,var(--line-cyan),transparent);
}

.panel{
  background:linear-gradient(158deg,rgba(18,70,60,.92),rgba(11,46,40,.94));
  border:1px solid var(--line-cyan);
  border-radius:var(--radius-lg);
  padding:clamp(20px,3vw,30px);
  box-shadow:var(--shadow-panel);
}
.paper-card{
  position:relative;
  background:var(--paper);
  color:var(--paper-ink);
  border:1px solid var(--line-paper);
  border-radius:var(--radius);
  padding:clamp(18px,2.6vw,26px);
  box-shadow:var(--shadow-paper);
}
.paper-card .eyebrow,
.paper-card .stat-label{color:rgba(8,32,28,.55)}
.paper-card a{color:#0A5B4C}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--pill);
  border:1px solid currentColor;
  background:rgba(47,227,200,.08);
  color:var(--cyan);
  font-size:12px;
  letter-spacing:.1em;
  line-height:1.5;
  white-space:nowrap;
}
.tag--amber{color:var(--amber);background:rgba(242,180,67,.1)}
.tag--coral{color:var(--coral);background:rgba(255,107,87,.1)}

.stat{display:flex;flex-direction:column;gap:4px}
.stat-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(26px,3.2vw,38px);
  line-height:1.08;
  color:var(--cyan);
}
.stat-label{
  font-size:12px;
  letter-spacing:.12em;
  color:var(--muted);
}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:var(--pill);
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  color:#04231D;
  box-shadow:0 12px 28px -18px rgba(47,227,200,.95);
}
.btn--primary:hover{
  transform:translateY(-1px);
  box-shadow:0 18px 34px -16px rgba(47,227,200,1);
}
.btn--amber{
  background:linear-gradient(135deg,var(--amber),var(--amber-soft));
  color:#3A2600;
  box-shadow:0 12px 28px -18px rgba(242,180,67,.9);
}
.btn--amber:hover{transform:translateY(-1px)}
.btn--ghost{
  background:transparent;
  border-color:var(--line-cyan);
  color:var(--cyan);
}
.btn--ghost:hover{background:rgba(47,227,200,.12);border-color:var(--cyan)}
.btn--sm{padding:8px 16px;font-size:13.5px}

/* ---------- 7. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-block:20px 0;
  font-size:12.5px;
  letter-spacing:.08em;
  color:var(--muted);
  list-style:none;
}
.breadcrumb a{color:var(--muted);text-decoration:none}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb li+li::before{
  content:"/";
  margin-right:8px;
  color:rgba(159,184,177,.45);
}

/* ---------- 8. 图片容器基础规则 ---------- */
.media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border:1px solid var(--line-cyan);
  border-radius:var(--radius);
  background:
    linear-gradient(135deg,rgba(47,227,200,.14),transparent 56%),
    linear-gradient(315deg,rgba(242,180,67,.14),transparent 54%),
    var(--panel);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--4x3{aspect-ratio:4/3}
.media--3x4{aspect-ratio:3/4}
.media--16x9{aspect-ratio:16/9}
.media--wide{aspect-ratio:21/9}
.media--tilt{transform:rotate(-1.6deg)}
.media--grid::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(47,227,200,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(47,227,200,.09) 1px,transparent 1px);
  background-size:34px 34px;
}

/* ---------- 9. 显现动效协议 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 10. 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:200;
  padding:11px 20px;
  background:var(--amber);
  color:#3A2600;
  font-size:14px;
  font-weight:700;
  text-decoration:none;
  border-radius:0 0 12px 0;
}
.skip-link:focus{left:0}

/* ---------- 11. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(6,28,24,.97),rgba(6,28,24,.82));
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-cyan-soft);
}
.progress-rail{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(47,227,200,.1);
  overflow:hidden;
}
.progress-bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--amber));
}
.hdr-bar{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  padding-block:14px;
}

.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
  justify-self:start;
  text-decoration:none;
  color:var(--fog);
}
.brand-mark{
  position:relative;
  font-family:var(--font-display);
  font-size:clamp(20px,2.2vw,26px);
  font-weight:900;
  font-stretch:condensed;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--fog);
  white-space:nowrap;
}
.brand-mark::after{
  content:"";
  display:inline-block;
  width:.3em;
  height:.3em;
  margin-left:.36em;
  vertical-align:.12em;
  background:var(--cyan);
  border-radius:2px;
  transform:rotate(45deg);
  box-shadow:0 0 14px rgba(47,227,200,.85);
}
.brand-sub{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
  white-space:nowrap;
}

.nav-island{
  justify-self:center;
  padding:6px;
  border:1px solid var(--line-cyan);
  border-radius:var(--pill);
  background:rgba(11,46,40,.75);
  box-shadow:0 14px 34px -24px rgba(0,0,0,.95);
  transition:padding .35s var(--ease),background .35s var(--ease);
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  list-style:none;
}
.nav-link{
  display:block;
  padding:9px 15px;
  border-radius:var(--pill);
  color:var(--fog);
  font-size:14.5px;
  text-decoration:none;
  white-space:nowrap;
  transition:background .25s var(--ease),color .25s var(--ease);
}
.nav-link:hover{background:rgba(47,227,200,.14);color:#FFFFFF}
.nav-link[aria-current="page"]{
  background:linear-gradient(135deg,var(--cyan),var(--cyan-soft));
  color:#04231D;
  font-weight:600;
  box-shadow:0 10px 24px -16px rgba(47,227,200,.95);
}

.hdr-actions{
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:6px;
  justify-self:end;
}
.hdr-actions-main{
  display:flex;
  align-items:center;
  gap:10px;
}
.site-search{
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-width:196px;
  padding:8px 15px;
  border:1px solid var(--line-muted);
  border-radius:var(--pill);
  background:rgba(6,28,24,.62);
  color:var(--muted);
  font-size:13px;
  text-decoration:none;
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.site-search:hover{border-color:var(--cyan);color:var(--fog)}
.search-glyph{
  position:relative;
  flex:none;
  width:11px;
  height:11px;
  border:1.6px solid currentColor;
  border-radius:50%;
}
.search-glyph::after{
  content:"";
  position:absolute;
  right:-4px;
  bottom:-2px;
  width:6px;
  height:1.6px;
  background:currentColor;
  transform:rotate(45deg);
}
.search-text{white-space:nowrap}
.announce-link{
  position:relative;
  padding-left:15px;
  color:var(--amber);
  font-size:11.5px;
  letter-spacing:.1em;
  text-decoration:none;
  white-space:nowrap;
}
.announce-link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:6px;
  height:6px;
  margin-top:-3px;
  border-radius:50%;
  background:var(--coral);
  animation:yy-pulse 2.4s var(--ease) infinite;
}
.announce-link:hover{color:var(--amber-soft)}
@keyframes yy-pulse{
  0%{box-shadow:0 0 0 0 rgba(255,107,87,.65)}
  70%{box-shadow:0 0 0 7px rgba(255,107,87,0)}
  100%{box-shadow:0 0 0 0 rgba(255,107,87,0)}
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 16px;
  border:1px solid var(--line-cyan);
  border-radius:var(--pill);
  background:rgba(11,46,40,.85);
  color:var(--fog);
  font-size:13.5px;
  cursor:pointer;
}
.nav-toggle-bars{
  position:relative;
  flex:none;
  width:18px;
  height:12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:var(--cyan);
  transition:transform .3s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.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)}

@keyframes yy-nav-in{
  from{opacity:0;transform:translateY(-8px)}
  to{opacity:1;transform:none}
}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:linear-gradient(180deg,rgba(11,46,40,.7),rgba(6,28,24,.98));
  border-top:1px solid var(--line-cyan-soft);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--cyan),var(--amber) 62%,transparent);
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr .9fr 1.5fr;
  gap:clamp(24px,3.4vw,52px);
  padding-block:clamp(40px,5.5vw,72px);
}
.foot-col{min-width:0}
.foot-col--brand{max-width:34ch}
.brand--footer{margin-bottom:16px}
.foot-motto{
  margin:0 0 18px;
  font-size:15px;
  line-height:1.75;
  color:rgba(232,243,239,.74);
  max-width:32ch;
}
.foot-tags{display:flex;flex-wrap:wrap;gap:8px}
.foot-title{
  margin:0 0 14px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--muted);
}
.foot-links{
  display:grid;
  gap:10px;
  list-style:none;
}
.foot-links a{
  color:var(--fog);
  font-size:15px;
  text-decoration:none;
  transition:color .25s var(--ease);
}
.foot-links a:hover{color:var(--cyan)}
.foot-contact{
  display:grid;
  gap:9px;
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line-muted);
  list-style:none;
  font-size:13.5px;
  color:rgba(232,243,239,.8);
}
.foot-contact li{display:flex;flex-wrap:wrap;gap:8px}
.foot-label{
  flex:none;
  min-width:5.2em;
  color:var(--muted);
  letter-spacing:.08em;
  font-size:12.5px;
}
.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:20px 26px;
  border-top:1px solid var(--line-muted);
  font-size:13px;
  color:var(--muted);
}
.foot-copy{margin:0}
.foot-quick{margin:0;display:flex;flex-wrap:wrap;gap:18px}
.foot-quick a{
  color:var(--cyan);
  text-decoration:none;
  font-size:13px;
  letter-spacing:.06em;
}
.foot-quick a:hover{color:var(--cyan-soft)}

/* ---------- 13. 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,32px);
  bottom:clamp(14px,3vw,32px);
  z-index:70;
  display:grid;
  place-items:center;
  width:48px;
  height:48px;
  padding:0;
  border:1px solid var(--line-cyan);
  border-radius:50%;
  background:rgba(11,46,40,.88);
  color:var(--cyan);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:opacity .35s var(--ease),transform .35s var(--ease),visibility .35s var(--ease),border-color .25s var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--cyan)}
.to-top-arrow{
  width:10px;
  height:10px;
  border-left:2px solid currentColor;
  border-top:2px solid currentColor;
  transform:rotate(45deg);
}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1360px){
  .nav-link{padding:9px 13px;font-size:14px}
}
@media (max-width:1240px){
  .site-search{display:none}
}
@media (max-width:1080px){
  .hdr-bar{
    grid-template-columns:1fr auto;
    grid-template-rows:auto auto auto;
    gap:10px 14px;
    padding-block:12px;
  }
  .brand{grid-column:1;grid-row:1}
  .nav-toggle{grid-column:2;grid-row:1;justify-self:end;display:inline-flex}
  .hdr-actions{
    grid-column:1/-1;
    grid-row:2;
    align-items:flex-start;
    justify-self:stretch;
  }
  .nav-island{
    grid-column:1/-1;
    grid-row:3;
    justify-self:stretch;
    display:none;
    padding:8px;
    border-radius:18px;
  }
  .nav-island[data-open="true"]{
    display:block;
    animation:yy-nav-in .28s var(--ease) both;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
  }
  .nav-link{padding:12px 16px;border-radius:12px;font-size:15px}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:960px){
  .grid--aside,.grid--aside-wide{grid-template-columns:minmax(0,1fr)}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .foot-col--brand{grid-column:1/-1;max-width:none}
  .foot-col--legal{grid-column:1/-1}
}
@media (max-width:620px){
  body{font-size:16px}
  .section{padding-block:clamp(34px,9vw,56px)}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-bottom{flex-direction:column;align-items:flex-start}
  .hdr-actions-main{flex-wrap:wrap}
  .announce-link{font-size:11px}
  .brand-sub{letter-spacing:.1em}
  .media--tilt{transform:none}
}

/* ---------- 15. 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;
  }
  body::before{animation:none}
  .js [data-reveal]{opacity:1;transform:none}
  .media--tilt{transform:none}
}