/* ============================================================
   金博娱乐 · /assets/site.css
   共享外壳：夜行导航轨道 + 双层信息导航 + 夜青页脚
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0A1A2F;
  --midnight:#10263F;
  --gold:#E8B45A;
  --gold-deep:#B8862B;
  --cyan:#2FE6C8;
  --magenta:#FF4D9D;
  --glass:#F4F7FB;
  --mist:#9FB3C8;
  --night:#06111E;

  --rail-w:288px;
  --topbar-h:62px;
  --shell:1180px;
  --gutter:clamp(16px,4vw,40px);

  --font-display:"Archivo Black","Bebas Neue","Arial Black","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --r-sm:6px;
  --r-md:12px;
  --r-lg:20px;
  --glass-bg:rgba(244,247,251,.06);
  --glass-brd:rgba(244,247,251,.14);
  --shadow-lift:0 18px 42px -26px rgba(0,0,0,.9);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--ink)}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:target{scroll-margin-top:calc(var(--topbar-h) + 18px)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  color:var(--glass);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 640px at 88% -12%, rgba(47,230,200,.10), transparent 62%),
    radial-gradient(900px 560px at 4% 106%, rgba(255,77,157,.10), transparent 64%),
    linear-gradient(180deg,#0A1A2F 0%,#0A1A2F 52%,#08182B 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:-12%;
  z-index:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(115deg, rgba(159,179,200,.055) 0 1px, transparent 1px 104px),
    repeating-linear-gradient(115deg, rgba(232,180,90,.05) 0 1px, transparent 1px 320px);
}
main,.site-footer{position:relative;z-index:1}
h1,h2,h3{font-family:var(--font-display);font-weight:900;line-height:1.08;letter-spacing:.01em}
h1{font-size:clamp(2rem,5.4vw,3.5rem)}
h2{font-size:clamp(1.4rem,3.1vw,2.05rem)}
h3{font-size:clamp(1.05rem,1.8vw,1.28rem)}
p{text-wrap:pretty}
strong{color:var(--gold)}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:220;
  padding:10px 16px;
  background:var(--gold);color:#08182B;
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.08em;
  border-radius:var(--r-sm);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 5. 页头外壳 ---------- */
.site-header{z-index:80}
.topbar__brand{display:flex;flex-direction:column;gap:2px}
.brand-mark{
  display:inline-block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.35rem,2.2vw,1.72rem);
  line-height:1.1;
  letter-spacing:.05em;
  color:var(--glass);
}
.brand-mark::after{
  content:"";
  display:block;
  width:2.5em;height:3px;margin-top:7px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--gold),var(--magenta));
}
.brand-mark--sm{font-size:1.06rem}
.brand-mark--sm::after{height:2px;width:1.9em;margin-top:5px}
.brand-mark--footer{font-size:1.32rem}
.brand-domain{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.16em;
  color:var(--mist);
  display:block;
  margin-top:8px;
}
.nav-toggle{
  display:inline-flex;align-items:center;gap:10px;
  padding:9px 15px;
  border:1px solid rgba(47,230,200,.42);
  border-radius:999px;
  background:rgba(47,230,200,.08);
  color:var(--cyan);
  font-family:var(--font-mono);font-size:.76rem;letter-spacing:.16em;
  transition:background .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{background:rgba(47,230,200,.16)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;border-radius:2px;transition:transform .25s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 品牌轨道内部 */
.rail__plate{
  display:flex;align-items:center;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;
  color:var(--cyan);
  margin-bottom:14px;
}
.rail__plate-num{
  display:inline-block;
  margin-right:8px;padding:1px 7px;
  border:1px solid rgba(232,180,90,.5);
  border-radius:4px;
  color:var(--gold);letter-spacing:.1em;
}
.rail__hint{
  margin-top:12px;
  max-width:22ch;
  font-size:.84rem;line-height:1.72;
  color:var(--mist);
}
.rail__nav{display:flex;flex-direction:column;gap:6px}
.nav-group{margin-top:16px}
.nav-group:first-child{margin-top:0}
.nav-group__label{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.22em;
  color:var(--mist);
  padding-bottom:8px;margin-bottom:8px;
  border-bottom:1px dashed rgba(159,179,200,.26);
}
.nav-list{display:flex;flex-direction:column;gap:2px}
.nav-link{
  position:relative;
  display:flex;align-items:center;gap:12px;
  padding:9px 12px 9px 15px;
  border-radius:var(--r-sm);
  font-size:.94rem;
  transition:background .22s var(--ease),color .22s var(--ease),transform .22s var(--ease);
}
.nav-link::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:0;border-radius:2px;
  background:var(--gold);
  transform:translateY(-50%);
  transition:height .24s var(--ease);
}
.nav-link__num{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;
  color:var(--mist);
  transition:color .22s var(--ease);
}
.nav-link__text{flex:1}
.nav-link:hover,.nav-link:focus-visible{background:rgba(244,247,251,.06);transform:translateX(4px)}
.nav-link:hover .nav-link__num,.nav-link:focus-visible .nav-link__num{color:var(--cyan)}
.nav-link:hover::before,.nav-link:focus-visible::before{height:58%}
.nav-link[aria-current="page"]{
  color:var(--gold);
  background:linear-gradient(90deg,rgba(232,180,90,.18),rgba(232,180,90,0));
}
.nav-link[aria-current="page"]::before{height:70%;background:var(--gold)}
.nav-link[aria-current="page"] .nav-link__num{color:var(--gold)}
.rail__cta{
  margin-top:auto;
  display:flex;flex-direction:column;gap:10px;
  padding-top:18px;
  border-top:1px solid rgba(232,180,90,.2);
}
.cta-item{
  display:flex;align-items:center;gap:11px;
  padding:12px 15px;
  border:1px solid transparent;
  border-radius:var(--r-md);
  background:rgba(244,247,251,.05);
  font-size:.9rem;
  transition:transform .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease);
}
.cta-item__num{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;
  padding:2px 7px;border-radius:4px;
  background:rgba(6,17,30,.65);
}
.cta-item__text{flex:1}
.cta-item--cyan{border-color:rgba(47,230,200,.36);color:var(--cyan)}
.cta-item--magenta{border-color:rgba(255,77,157,.36);color:var(--magenta)}
.cta-item:hover{transform:translateY(-2px);background:rgba(244,247,251,.1)}

/* 桌面：固定左轨道 */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .site-header{position:fixed;inset:0 auto 0 0;width:var(--rail-w)}
  .topbar{display:none}
  .rail{
    display:flex;flex-direction:column;
    gap:clamp(18px,3vh,32px);
    height:100%;
    padding:32px 24px 26px;
    overflow-y:auto;
    background:linear-gradient(160deg,rgba(16,38,63,.96),rgba(6,17,30,.97));
    border-right:1px solid rgba(232,180,90,.2);
    backdrop-filter:blur(14px);
  }
  .rail__brand{padding-bottom:20px;border-bottom:1px solid rgba(159,179,200,.16)}
  .rail__nav{flex:1}
  .scroll-progress{left:var(--rail-w)}
}

/* 移动 / 平板：吸顶横条 + 下拉路径面板 */
@media (max-width:1023.98px){
  .site-header{position:sticky;top:0}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    min-height:var(--topbar-h);
    padding:10px var(--gutter);
    background:rgba(6,17,30,.94);
    border-bottom:1px solid rgba(232,180,90,.2);
    backdrop-filter:blur(12px);
  }
  .rail{
    position:fixed;left:0;right:0;top:var(--topbar-h);
    max-height:calc(100dvh - var(--topbar-h));
    display:flex;flex-direction:column;
    gap:22px;
    padding:22px var(--gutter) 36px;
    overflow-y:auto;
    background:linear-gradient(170deg,#10263F,#06111E);
    border-bottom:1px solid rgba(47,230,200,.3);
    transform:translateY(-14px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .32s var(--ease),opacity .32s var(--ease),visibility .32s linear;
  }
  .site-header[data-open] .rail{
    transform:none;opacity:1;visibility:visible;pointer-events:auto;
  }
  .rail__cta{margin-top:8px}
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  margin-top:clamp(48px,8vw,110px);
  background:var(--night);
  border-top:1px solid rgba(232,180,90,.2);
}
.footer-rule{
  height:6px;
  opacity:.55;
  background:repeating-linear-gradient(115deg,
    var(--gold) 0 14px,transparent 14px 40px,
    var(--magenta) 40px 50px,transparent 50px 78px,
    var(--cyan) 78px 88px,transparent 88px 132px);
}
.footer-shell{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:clamp(20px,3vw,44px);
  padding-block:clamp(34px,5vw,62px);
}
.footer-plate{
  display:flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;
  color:var(--mist);
  margin-bottom:14px;
}
.footer-plate__tag{
  padding:1px 7px;border-radius:4px;
  border:1px solid rgba(232,180,90,.5);
  color:var(--gold);
}
.footer-mono{
  margin-top:10px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;
  color:var(--cyan);
}
.footer-note{
  margin-top:12px;max-width:34ch;
  font-size:.82rem;line-height:1.75;
  color:var(--mist);
}
.footer-col__title{
  font-family:var(--font-mono);font-weight:400;
  font-size:.7rem;letter-spacing:.22em;
  color:var(--gold);
  margin-bottom:14px;
}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:.9rem}
.footer-list a{color:var(--glass);transition:color .2s var(--ease)}
.footer-list a:hover,.footer-list a:focus-visible{color:var(--cyan)}
.footer-list--meta li{display:grid;grid-template-columns:46px 1fr;gap:10px;font-size:.84rem;color:var(--glass)}
.meta-key{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--mist)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px 24px;
  justify-content:space-between;align-items:center;
  padding-block:16px 28px;
  border-top:1px solid rgba(159,179,200,.16);
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;
  color:var(--mist);
}
.footer-copy{color:var(--mist)}

/* ---------- 7. 通用布局与组件 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--narrow{max-width:800px}
main{padding-bottom:clamp(24px,5vw,56px)}
.page-head{padding-block:clamp(26px,5vw,60px) 0}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.24em;
  color:var(--cyan);
  margin-bottom:16px;
}
.eyebrow::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--cyan),transparent)}
.lede{max-width:64ch;font-size:clamp(1rem,1.4vw,1.12rem);line-height:1.92;color:#D7E1EC}
.section{padding-block:clamp(26px,4.6vw,58px)}
.section__index{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(2.8rem,8vw,6rem);
  line-height:1;
  color:rgba(232,180,90,.16);
  -webkit-text-stroke:1px rgba(232,180,90,.5);
  margin-bottom:6px;
}
.section__title{font-size:clamp(1.35rem,2.9vw,1.95rem)}
.divider{height:1px;border:0;margin-block:clamp(22px,4vw,42px);background:linear-gradient(90deg,transparent,rgba(232,180,90,.5),transparent)}
.stack>*+*{margin-top:14px}

.panel{
  background:linear-gradient(150deg,rgba(244,247,251,.075),rgba(244,247,251,.02));
  border:1px solid var(--glass-brd);
  border-radius:var(--r-lg);
  padding:clamp(18px,3vw,32px);
  backdrop-filter:blur(10px);
  box-shadow:var(--shadow-lift);
}
.panel--solid{background:var(--midnight);backdrop-filter:none}
.card{
  position:relative;
  background:var(--midnight);
  border:1px solid rgba(159,179,200,.18);
  border-radius:var(--r-md);
  padding:clamp(16px,2.4vw,26px);
  overflow:hidden;
}
.card--breathing{
  border-color:rgba(232,180,90,.5);
  animation:breathe 5.4s ease-in-out infinite;
}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 1px rgba(232,180,90,.34),0 0 22px -10px rgba(232,180,90,.6)}
  50%{box-shadow:0 0 0 1px rgba(255,77,157,.42),0 0 30px -8px rgba(255,77,157,.55)}
}

.grid{display:grid;gap:clamp(14px,2.4vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}

.callout{
  border-left:3px solid var(--gold);
  background:rgba(232,180,90,.08);
  border-radius:0 var(--r-md) var(--r-md) 0;
  padding:16px 20px;
}
.callout--cyan{border-left-color:var(--cyan);background:rgba(47,230,200,.08)}
.callout--magenta{border-left-color:var(--magenta);background:rgba(255,77,157,.08)}

.index-list{display:flex;flex-direction:column}
.index-list__item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  padding-block:16px;
  border-top:1px dashed rgba(159,179,200,.24);
}
.index-list__item:last-child{border-bottom:1px dashed rgba(159,179,200,.24)}
.num-badge{
  height:max-content;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;
  color:var(--gold);
  border:1px solid rgba(232,180,90,.38);
  border-radius:6px;
  padding:3px 8px;
}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;
  padding:5px 10px;border-radius:999px;
  border:1px solid rgba(159,179,200,.32);
  color:var(--mist);
}
.tag--gold{color:var(--gold);border-color:rgba(232,180,90,.42)}
.tag--cyan{color:var(--cyan);border-color:rgba(47,230,200,.42)}
.tag--magenta{color:var(--magenta);border-color:rgba(255,77,157,.42)}

.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 22px;
  border:1px solid transparent;border-radius:999px;
  font-size:.94rem;font-weight:600;letter-spacing:.02em;
  transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--gold{background:var(--gold);color:#08182B}
.btn--gold:hover{background:#F2C473;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(244,247,251,.3);color:var(--glass)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}
.btn--cyan{background:rgba(47,230,200,.12);border-color:rgba(47,230,200,.5);color:var(--cyan)}
.btn--cyan:hover{background:rgba(47,230,200,.2);transform:translateY(-2px)}

.crumbs{padding-block:16px 0}
.crumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em;
  color:var(--mist);
}
.crumbs__item a:hover{color:var(--cyan)}
.crumbs__sep{color:rgba(159,179,200,.5)}

/* 图片容器：页面阶段直接套用 */
.media{
  position:relative;display:block;width:100%;
  aspect-ratio:16/10;
  border-radius:var(--r-md);
  overflow:hidden;
  background:linear-gradient(140deg,#10263F,#06111E);
  border:1px solid rgba(159,179,200,.18);
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media__caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;
  color:var(--mist);
}
.media--placeholder::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(232,180,90,.12) 0 1px,transparent 1px 44px);
}
.media--placeholder::after{
  content:attr(data-label);
  position:absolute;left:14px;bottom:12px;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;
  color:var(--mist);
}

/* 标签页 / 分段切换 */
.tabs{margin-top:clamp(16px,2.4vw,26px)}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:8px;
  padding:6px;
  background:rgba(6,17,30,.72);
  border:1px solid rgba(159,179,200,.2);
  border-radius:999px;
}
.tab{
  padding:10px 18px;border-radius:999px;
  font-size:.87rem;color:var(--mist);
  border:1px solid transparent;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.tab:hover{color:var(--glass);background:rgba(244,247,251,.06)}
.tab[aria-selected="true"]{
  color:var(--glass);
  background:linear-gradient(120deg,rgba(232,180,90,.22),rgba(255,77,157,.18));
  border-color:rgba(255,77,157,.42);
}
.tab-panel{padding-top:clamp(16px,2.4vw,26px)}
.tab-panel[hidden]{display:none}

/* 工具与动效协议 */
.u-mono{font-family:var(--font-mono);font-size:.76rem;letter-spacing:.1em;color:var(--mist)}
.u-quiet{color:var(--mist)}
.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.scroll-progress{
  position:fixed;top:0;left:0;
  height:3px;width:0;z-index:200;
  background:linear-gradient(90deg,var(--gold),var(--magenta),var(--cyan));
  pointer-events:none;
}
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 8. 响应式 ---------- */
@media (max-width:1023.98px){
  .footer-shell{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:640px){
  .footer-shell{grid-template-columns:1fr;gap:26px}
  .footer-list--meta li{grid-template-columns:1fr;gap:2px}
  .tabs__list{border-radius:var(--r-md)}
  .tab{flex:1 1 auto;text-align:center}
  .index-list__item{grid-template-columns:1fr}
  .btn{padding:12px 18px;font-size:.9rem}
}
@media (min-width:1024px) and (max-width:1279.98px){
  :root{--rail-w:250px}
  .footer-shell{grid-template-columns:1.3fr 1fr 1fr}
  .footer-col--contact{grid-column:1 / -1}
}

/* ---------- 9. 无障碍：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;transform:none}
  .scroll-progress{transition:none}
  .card--breathing{box-shadow:0 0 0 1px rgba(232,180,90,.4)}
}