/* ============================================================
   幻影体育站 · 共享样式 /assets/site.css
   灯下翻数据：墨蓝夜幕 + 灯柱琥珀 + 数据青绿
   ============================================================ */

/* ---------- 1. reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:96px;
}

body,
h1,h2,h3,h4,p,figure,blockquote,dl,dd,ol,ul{margin:0}
ol,ul{padding:0;list-style:none}
img,svg{max-width:100%}
img{height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0}
table{border-collapse:collapse;width:100%}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#07111F;
  --ink-2:#0C1B2A;
  --steel:#12283D;
  --amber:#F2A93B;
  --amber-soft:#FFD79A;
  --jade:#38F2C4;
  --fog:#EAF1F8;
  --fog-dim:#C7D6E3;
  --slate:#8FA6B8;
  --line:#24405A;
  --coral:#FF6B5E;
  --paper:#F7E7C6;

  --font-display:"Barlow Condensed","Arial Narrow","PingFang SC","Noto Sans SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Consolas,"Courier New",monospace;

  --shell:1440px;
  --gutter:clamp(16px,3.2vw,40px);
  --radius-s:6px;
  --radius-m:14px;
  --radius-l:26px;
  --dur:240ms;
  --dur-fast:160ms;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 3. 基底与中文排版 ---------- */
body{
  min-height:100vh;
  background:
    radial-gradient(1100px 560px at 84% -10%, rgba(242,169,59,.13), transparent 62%),
    radial-gradient(820px 460px at 4% 8%, rgba(56,242,196,.055), transparent 58%),
    var(--ink);
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  font-weight:400;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:-.015em;
  line-height:1.06;
  color:var(--fog);
  text-wrap:balance;
}
h1{font-size:clamp(44px,7.5vw,96px)}
h2{font-size:clamp(30px,4vw,48px)}
h3{font-size:clamp(20px,2vw,26px);line-height:1.22}

p{margin:0 0 1em}
p:last-child{margin-bottom:0}
strong{color:var(--fog);font-weight:700}
small{font-size:13px;line-height:1.6}

a{color:var(--amber-soft);text-decoration:none;transition:color var(--dur-fast) var(--ease)}
a:hover{color:var(--amber)}

::selection{background:var(--amber);color:#1a1207}

main{display:block}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--jade);
  outline-offset:3px;
  border-radius:4px;
}

#main-content:focus{outline:none}
#main-content:focus-visible{outline:2px solid var(--jade);outline-offset:-4px}

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

/* ---------- 4. 容器与工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.shell--narrow{max-width:900px}

.grid{display:grid;gap:clamp(16px,2.2vw,32px)}

.section-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px 20px;
  padding-bottom:12px;
  margin-bottom:clamp(18px,2.4vw,30px);
  border-bottom:1px solid rgba(36,64,90,.85);
}

.eyebrow{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.4;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--amber);
}

.lede{
  max-width:62ch;
  font-size:clamp(16px,1.4vw,18px);
  line-height:1.8;
  color:var(--fog-dim);
}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}

.ts{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  line-height:1.6;
  letter-spacing:.02em;
  color:var(--slate);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  line-height:1.6;
  letter-spacing:.06em;
  color:var(--jade);
  background:rgba(56,242,196,.07);
  border:1px solid rgba(56,242,196,.34);
  border-radius:999px;
}

.dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--jade);
  box-shadow:0 0 9px rgba(56,242,196,.85);
  flex:0 0 auto;
}

.divider{
  height:1px;
  border:0;
  margin:clamp(24px,3vw,40px) 0;
  background:linear-gradient(90deg, rgba(36,64,90,.95), rgba(36,64,90,0));
}

.crumbs{
  margin:0 0 20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--slate);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--line)}
.crumbs a{
  color:var(--slate);
  border-bottom:1px solid transparent;
  transition:color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.crumbs a:hover{color:var(--amber-soft);border-bottom-color:rgba(255,215,154,.5)}
.crumbs [aria-current="page"]{color:var(--fog)}

.lamp-rail{
  position:relative;
  padding-left:26px;
}
.lamp-rail::before{
  content:"";
  position:absolute;
  left:0;top:6px;bottom:6px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, var(--amber) 0%, rgba(242,169,59,.06) 100%);
}

/* ---------- 5. 按钮 ---------- */
.btn{
  --btn-bg:transparent;
  --btn-fg:var(--fog);
  --btn-bd:var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:.02em;
  color:var(--btn-fg);
  background:var(--btn-bg);
  border:1px solid var(--btn-bd);
  border-radius:999px;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
  transition:transform var(--dur-fast) var(--ease),
             background var(--dur) var(--ease),
             color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}

.btn-amber{
  --btn-bg:linear-gradient(135deg, var(--amber-soft) 0%, var(--amber) 100%);
  --btn-fg:#1a1207;
  --btn-bd:rgba(255,215,154,.6);
  box-shadow:0 8px 20px rgba(242,169,59,.22);
}
.btn-amber:hover{
  color:#1a1207;
  box-shadow:0 12px 28px rgba(242,169,59,.34);
}

.btn-ghost{
  --btn-bg:rgba(18,40,61,.55);
  --btn-fg:var(--fog-dim);
  --btn-bd:rgba(36,64,90,.95);
}
.btn-ghost:hover{
  --btn-fg:var(--amber-soft);
  --btn-bd:rgba(242,169,59,.55);
}

/* ---------- 6. 跳过链接 ---------- */
.skip-link{
  position:absolute;
  left:14px;
  top:-120px;
  z-index:140;
  padding:10px 18px;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  color:#1a1207;
  background:var(--amber);
  border-radius:0 0 12px 12px;
  box-shadow:0 10px 24px rgba(0,0,0,.45);
  transition:top var(--dur-fast) var(--ease);
}
.skip-link:focus{top:0;color:#1a1207}
.skip-link:focus-visible{outline:2px solid var(--jade);outline-offset:2px}

/* ---------- 7. 页头命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg, rgba(12,27,42,.985) 0%, rgba(7,17,31,.955) 100%);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.header-rail{
  position:absolute;
  inset:0 auto 0 0;
  width:3px;
  pointer-events:none;
  background:linear-gradient(180deg,
    rgba(242,169,59,0) 0%,
    var(--amber) 26%,
    var(--amber-soft) 58%,
    rgba(242,169,59,0) 100%);
  box-shadow:0 0 18px rgba(242,169,59,.55);
}

.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  max-width:var(--shell);
  margin-inline:auto;
  padding:10px calc(var(--gutter) + 8px) 10px calc(var(--gutter) + 10px);
  min-height:66px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  min-width:0;
  color:var(--fog);
  text-decoration:none;
}
.brand:hover{color:var(--fog)}

.brand-mark{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  flex:0 0 auto;
  border-radius:10px;
  background:radial-gradient(circle at 32% 26%, #fff7e8 0%, var(--amber-soft) 34%, var(--amber) 68%, #a86a17 100%);
  color:#20140a;
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  line-height:1;
  text-indent:1px;
  box-shadow:0 0 0 1px rgba(255,215,154,.35), 0 6px 18px rgba(242,169,59,.3);
}

.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--fog);
  white-space:nowrap;
}
.brand-descriptor{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:var(--slate);
  white-space:nowrap;
}

/* 主导航 */
.site-nav{margin-left:auto}

.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
}

.nav-item{position:relative}

.nav-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:9px 11px 11px;
  font-size:14px;
  font-weight:600;
  line-height:1.35;
  color:var(--slate);
  text-decoration:none;
  border-radius:var(--radius-s);
  transition:color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--amber);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-link:hover{
  color:var(--fog);
  background:rgba(18,40,61,.7);
}
.nav-link:hover::after{transform:scaleX(.42);background:var(--amber-soft)}
.nav-link[aria-current="page"]{color:var(--amber-soft)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--amber)}

.nav-index{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:10px;
  letter-spacing:.04em;
  color:#55708a;
  transition:color var(--dur) var(--ease);
}
.nav-link:hover .nav-index{color:var(--amber-soft)}
.nav-link[aria-current="page"] .nav-index{color:var(--amber)}

/* 页头 CTA */
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.header-actions .btn{font-size:13.5px;padding:9px 16px}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;height:40px;
  flex:0 0 auto;
  color:var(--fog);
  background:var(--steel);
  border:1px solid var(--line);
  border-radius:10px;
  cursor:pointer;
  transition:background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.nav-toggle:hover{background:#17314a;border-color:rgba(242,169,59,.5)}

.nav-toggle-box{
  display:grid;
  gap:4px;
  width:18px;
}
.nav-toggle-bar{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--dur) var(--ease), opacity var(--dur-fast) var(--ease);
}
.site-header[data-open] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.site-header[data-open] .nav-toggle{border-color:var(--amber);color:var(--amber-soft)}

/* 阅读进度光带 */
.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  pointer-events:none;
  background:rgba(36,64,90,.35);
}
.scroll-progress > span{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg, var(--amber) 0%, var(--amber-soft) 55%, var(--jade) 100%);
  box-shadow:0 0 10px rgba(242,169,59,.55);
}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  padding-top:2px;
  overflow:hidden;
  background:linear-gradient(180deg, var(--ink-2) 0%, #050d16 100%);
  border-top:1px solid var(--line);
  color:var(--slate);
  font-size:14px;
  line-height:1.7;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,
    rgba(242,169,59,0) 0%,
    var(--amber) 18%,
    var(--amber-soft) 50%,
    var(--amber) 82%,
    rgba(242,169,59,0) 100%);
  opacity:.8;
}

.footer-glow{
  position:absolute;
  top:-150px;
  left:clamp(0px,8vw,150px);
  width:min(500px,72vw);
  height:300px;
  pointer-events:none;
  background:radial-gradient(ellipse at center, rgba(242,169,59,.16), rgba(242,169,59,0) 68%);
}

.footer-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(230px,1.5fr) minmax(110px,.65fr) minmax(110px,.65fr) minmax(230px,1.2fr);
  gap:clamp(22px,3vw,52px);
  align-items:start;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(38px,5vw,66px) var(--gutter) clamp(26px,3vw,38px);
}

.footer-brandline{
  margin:0 0 10px;
  font-family:var(--font-display);
  font-size:clamp(19px,1.7vw,23px);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.005em;
  color:var(--fog);
}
.footer-tagline{
  margin:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--slate);
}

.footer-col-title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  line-height:1.5;
  letter-spacing:.14em;
  color:var(--amber);
}

.footer-links{display:flex;flex-direction:column;gap:9px}
.footer-links a{
  color:var(--fog-dim);
  font-size:14px;
  text-decoration:underline;
  text-decoration-color:transparent;
  text-decoration-thickness:1px;
  text-underline-offset:4px;
  transition:color var(--dur-fast) var(--ease), text-decoration-color var(--dur-fast) var(--ease);
}
.footer-links a:hover{
  color:var(--amber-soft);
  text-decoration-color:currentColor;
}

.footer-contact-row + .footer-contact-row{margin-top:11px}
.footer-label{
  display:block;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.13em;
  color:#62809a;
}
.footer-value{
  display:block;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13.5px;
  line-height:1.65;
  letter-spacing:.005em;
  color:var(--fog-dim);
  overflow-wrap:anywhere;
}
.footer-hours{
  margin:16px 0 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--jade);
}

.footer-base{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 26px;
  max-width:var(--shell);
  margin-inline:auto;
  padding:16px var(--gutter) 30px;
  border-top:1px solid rgba(36,64,90,.8);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:var(--slate);
}
.footer-copy,
.footer-icp{margin:0;font-size:12px;color:var(--slate)}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
}
.footer-legal a{
  color:var(--slate);
  text-decoration:underline;
  text-decoration-color:transparent;
  text-underline-offset:4px;
  transition:color var(--dur-fast) var(--ease), text-decoration-color var(--dur-fast) var(--ease);
}
.footer-legal a:hover{color:var(--amber-soft);text-decoration-color:currentColor}

/* ---------- 9. 可复用媒体容器（供页面阶段放图） ---------- */
.media{
  position:relative;
  margin:0;
  overflow:hidden;
  border:1px solid rgba(36,64,90,.9);
  border-radius:var(--radius-m);
  background:linear-gradient(148deg, rgba(18,40,61,.92) 0%, rgba(7,17,31,.96) 100%);
}

.media-frame{
  position:relative;
  display:block;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:
    radial-gradient(circle at 28% 18%, rgba(242,169,59,.16), rgba(242,169,59,0) 58%),
    radial-gradient(circle at 78% 88%, rgba(56,242,196,.08), rgba(56,242,196,0) 60%);
}
.media-frame > img,
.media-img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.06) brightness(.94);
}

.media-caption{
  display:block;
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.6;
  letter-spacing:.03em;
  color:var(--slate);
  background:rgba(7,17,31,.65);
  border-top:1px solid rgba(36,64,90,.75);
}

.media--wide .media-frame{aspect-ratio:21 / 9}
.media--tall .media-frame{aspect-ratio:4 / 5}

/* ---------- 10. 渐显协议 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity 420ms var(--ease), transform 420ms var(--ease);
  will-change:opacity, transform;
}
[data-reveal].is-revealed{
  opacity:1;
  transform:none;
  will-change:auto;
}

@media (scripting: none){
  [data-reveal]{opacity:1;transform:none}
}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1100px){
  .header-inner{gap:10px;min-height:62px}
  .brand{flex:1 1 auto;min-width:0}
  .brand-descriptor{display:none}
  .header-actions{order:2;margin-left:auto}
  .header-actions .btn{font-size:12.5px;padding:8px 13px}
  .nav-toggle{display:inline-flex;order:3;margin-left:0}

  .site-nav{
    position:absolute;
    left:0;right:0;top:100%;
    order:4;
    margin-left:0;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    background:linear-gradient(180deg, var(--ink-2) 0%, #07111f 100%);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 50px rgba(0,0,0,.6);
    transition:max-height 220ms var(--ease), visibility 0s linear 220ms;
  }
  .site-header[data-open] .site-nav{
    max-height:min(72vh,540px);
    overflow-y:auto;
    visibility:visible;
    transition:max-height 220ms var(--ease), visibility 0s linear 0s;
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding:8px 16px 18px;
  }
  .nav-item + .nav-item{border-top:1px solid rgba(36,64,90,.65)}
  .nav-link{
    padding:14px 6px 14px 14px;
    font-size:16px;
    border-radius:0;
    color:var(--fog-dim);
  }
  .nav-link::after{display:none}
  .nav-link::before{
    content:"";
    position:absolute;
    left:0;top:50%;
    width:2px;height:0;
    border-radius:2px;
    background:var(--amber);
    transform:translateY(-50%);
    transition:height var(--dur) var(--ease);
  }
  .nav-link:hover{background:rgba(18,40,61,.6)}
  .nav-link[aria-current="page"]{color:var(--amber-soft);background:rgba(18,40,61,.75)}
  .nav-link[aria-current="page"]::before{height:20px}
  .nav-link[aria-current="page"] .nav-index{color:var(--amber)}
  .nav-index{font-size:11px}

  .footer-inner{
    grid-template-columns:minmax(220px,1.4fr) minmax(110px,.7fr) minmax(110px,.7fr);
  }
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:760px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:26px 20px}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .footer-base{gap:10px 18px}
}

@media (max-width:480px){
  .brand-mark{width:30px;height:30px;font-size:17px;border-radius:9px}
  .brand-name{font-size:17px}
  .footer-inner{grid-template-columns:1fr}
  .footer-base{justify-content:flex-start}
  .media-frame{aspect-ratio:4 / 3}
}

/* ---------- 12. 减少动态 ---------- */
@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 !important;transform:none !important}
  .btn:hover{transform:none}
  .scroll-progress > span{box-shadow:none}
}