/* ==========================================================================
   问鼎娱乐 · 共享站点样式 /assets/site.css
   夜间控制台视觉体系：深墨蓝画布 / 铜金刻度 / 信号青状态 / 琥珀提醒
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,dl,dd,dt,figure,blockquote,pre{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{max-width:100%;display:block;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
input,textarea,select{font:inherit;color:inherit;}
html{-webkit-text-size-adjust:100%;}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth;}}

/* ---------- 2. 设计变量 ---------- */
:root{
  --ink:#071A2B;
  --ink-2:#0D2A42;
  --ink-3:#123249;
  --copper:#C89B5A;
  --copper-bright:#E3B878;
  --cyan:#35C4C6;
  --amber:#F2A93B;
  --stone:#6F7C86;
  --stone-light:#9AA7B1;
  --cream:#F2EDE3;
  --moss:#5E7F6A;
  --clay:#B46B52;

  --line:rgba(111,124,134,.30);
  --line-soft:rgba(111,124,134,.16);
  --line-strong:rgba(200,155,90,.40);
  --tint-copper:rgba(200,155,90,.10);
  --tint-cyan:rgba(53,196,198,.10);

  --shell:1240px;
  --gutter:clamp(16px,4vw,44px);
  --radius:2px;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",ui-monospace,monospace;
}

/* ---------- 3. 基础中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:clamp(15.5px,.35vw + 14.8px,17px);
  line-height:1.75;
  color:var(--cream);
  background-color:var(--ink);
  background-image:
    radial-gradient(1120px 540px at 84% -6%,rgba(53,196,198,.10),transparent 62%),
    radial-gradient(900px 480px at 2% 0%,rgba(200,155,90,.10),transparent 64%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
h1,h2,h3,h4,h5,h6,.display{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.015em;
  color:var(--cream);
}
h1{font-size:clamp(28px,3.6vw,46px);}
h2{font-size:clamp(23px,2.6vw,32px);}
h3{font-size:clamp(17px,1.5vw,21px);font-weight:800;}
p{color:rgba(242,237,227,.84);}
strong{font-weight:800;color:var(--cream);}
small{font-size:.82em;}

.display{font-size:clamp(34px,6.2vw,76px);line-height:1.02;letter-spacing:-.03em;}
.lede{font-size:clamp(16px,1.3vw,19px);line-height:1.75;color:rgba(242,237,227,.80);max-width:62ch;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.visually-hidden{
  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. 焦点与可访问性 ---------- */
:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:var(--radius);
}
::selection{background:rgba(200,155,90,.34);color:var(--cream);}

.skip-link{
  position:fixed;
  top:10px;
  left:12px;
  z-index:200;
  padding:10px 18px;
  font-size:14px;
  font-weight:700;
  color:var(--ink);
  background:var(--cream);
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .16s ease;
}
.skip-link:focus{transform:translateY(0);}

/* ---------- 5. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,26,43,.93);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.header-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:14px var(--gutter);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  flex:none;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:none;
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  line-height:1;
  color:var(--ink);
  background:linear-gradient(158deg,var(--copper-bright),var(--copper));
  clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%);
  transition:filter .16s ease;
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  line-height:1.15;
  letter-spacing:.02em;
  color:var(--cream);
  transition:color .16s ease;
}
.brand-tagline{
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.45;
  letter-spacing:.13em;
  color:var(--stone);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand:hover .brand-name{color:var(--copper-bright);}
.brand:hover .brand-mark{filter:brightness(1.08);}

.nav-panel{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  min-width:0;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(2px,.9vw,8px);
}
.nav-item{position:relative;}
.nav-link{
  position:relative;
  display:inline-block;
  padding:8px 10px 9px;
  font-size:14.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:rgba(242,237,227,.78);
  border-radius:var(--radius);
  transition:color .16s ease,background-color .16s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:3px;
  height:1px;
  background:var(--copper);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease,background-color .18s ease;
}
.nav-link:hover{color:var(--cream);background:rgba(200,155,90,.09);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link[aria-current="page"]{
  color:var(--copper-bright);
  background:rgba(200,155,90,.14);
}
.nav-link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--copper-bright);
}
.header-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:none;
  padding:9px 16px;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--ink);
  background:linear-gradient(180deg,var(--copper-bright),var(--copper));
  border-radius:var(--radius);
  box-shadow:0 0 0 1px rgba(227,184,120,.34);
  transition:filter .16s ease,transform .16s ease,box-shadow .16s ease;
}
.header-cta::after{content:"→";font-family:var(--font-mono);font-size:13px;}
.header-cta:hover{
  filter:brightness(1.08);
  transform:translateY(-1px);
  box-shadow:0 8px 20px rgba(200,155,90,.28);
}
.header-cta:active{transform:translateY(0);}

.nav-toggle{display:none;}
.nav-panel-head{display:none;}

.scroll-progress{
  height:2px;
  background:rgba(111,124,134,.18);
  overflow:hidden;
}
.scroll-progress-bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--copper));
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,110px);
  padding-block:clamp(40px,5.5vw,68px) 26px;
  background:linear-gradient(180deg,rgba(13,42,66,0) 0%,#0A2136 34%,#071A2B 100%);
  border-top:1px solid var(--line);
  font-size:14px;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset-inline:0;
  top:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--copper) 0%,var(--cyan) 46%,rgba(53,196,198,0) 88%);
  pointer-events:none;
}
.footer-inner{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.35fr);
  gap:clamp(28px,5vw,64px);
  align-items:start;
}
.footer-brand{min-width:0;}
.footer-brand-line{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(19px,2.1vw,26px);
  line-height:1.32;
  letter-spacing:-.01em;
  color:var(--cream);
}
.footer-desc{
  margin-top:14px;
  max-width:46ch;
  font-size:14px;
  line-height:1.72;
  color:var(--stone-light);
}
.footer-note{
  margin-top:12px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.09em;
  line-height:1.6;
  color:var(--copper);
}
.footer-columns{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
.footer-col{min-width:0;}
.footer-col-title{
  margin-bottom:13px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--stone-light);
}
.footer-links{display:flex;flex-direction:column;gap:9px;}
.footer-link{
  display:inline-block;
  width:fit-content;
  font-size:14.5px;
  line-height:1.6;
  color:rgba(242,237,227,.80);
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.footer-link:hover{color:var(--copper-bright);border-bottom-color:var(--copper);}
.footer-link[aria-current="page"]{color:var(--copper-bright);}
.footer-link[aria-current="page"]::before{
  content:"◆";
  margin-right:6px;
  font-size:9px;
  vertical-align:2px;
  color:var(--cyan);
}
.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:20px 28px;
  margin-top:clamp(30px,4vw,48px);
  padding-top:clamp(22px,3vw,30px);
  border-top:1px solid var(--line);
}
.contact-item{display:flex;flex-direction:column;gap:5px;min-width:0;}
.contact-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--copper);
}
.contact-value{
  font-size:14px;
  line-height:1.65;
  color:rgba(242,237,227,.86);
  word-break:break-word;
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:clamp(24px,3vw,34px);
  padding-top:16px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--stone);
}
.legal-text{font-size:inherit;line-height:1.6;color:inherit;margin:0;}

/* ---------- 7. 通用布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.band{padding-block:clamp(36px,5.5vw,72px);}
.band--tight{padding-block:clamp(22px,3vw,40px);}
.rule{height:1px;border:0;background:var(--line);}
.grid{display:grid;gap:clamp(16px,2vw,28px);}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr));}
.span-4{grid-column:span 4;}
.span-6{grid-column:span 6;}
.span-8{grid-column:span 8;}
.span-12{grid-column:span 12;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.2em;
  line-height:1.5;
  color:var(--copper);
}
.eyebrow::before{
  content:"";
  width:22px;
  height:2px;
  background:linear-gradient(90deg,var(--copper),var(--cyan));
  flex:none;
}

/* ---------- 8. 通用组件 ---------- */
.panel{
  position:relative;
  padding:clamp(16px,2.2vw,26px);
  background:linear-gradient(180deg,rgba(13,42,66,.94),rgba(13,42,66,.62));
  border:1px solid var(--line);
  border-radius:var(--radius);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.panel:hover{
  border-color:var(--line-strong);
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(0,0,0,.30);
}
.panel-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(16px,1.5vw,19px);
  line-height:1.35;
  letter-spacing:-.005em;
  color:var(--cream);
}

.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:.1em;
  color:var(--copper-bright);
  background:var(--tint-copper);
  border:1px solid rgba(200,155,90,.34);
  border-radius:var(--radius);
  white-space:nowrap;
}

.status-dot{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  line-height:1.6;
  color:rgba(242,237,227,.86);
}
.status-dot::before{
  content:"";
  width:8px;
  height:8px;
  flex:none;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,196,198,.16);
}
.status-dot--ok::before{background:var(--moss);box-shadow:0 0 0 3px rgba(94,127,106,.20);}
.status-dot--info::before{background:var(--cyan);box-shadow:0 0 0 3px rgba(53,196,198,.16);}
.status-dot--warn::before{background:var(--amber);box-shadow:0 0 0 3px rgba(242,169,59,.18);}
.status-dot--note::before{background:var(--clay);box-shadow:0 0 0 3px rgba(180,107,82,.20);}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:12px 22px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:700;
  line-height:1.3;
  letter-spacing:.03em;
  color:var(--cream);
  background:transparent;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  transition:background-color .16s ease,border-color .16s ease,color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn:hover{
  border-color:var(--copper-bright);
  background:var(--tint-copper);
  transform:translateY(-1px);
}
.btn:active{transform:translateY(0);}
.btn--solid{
  color:var(--ink);
  background:linear-gradient(180deg,var(--copper-bright),var(--copper));
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(227,184,120,.34);
}
.btn--solid:hover{
  filter:brightness(1.07);
  background:linear-gradient(180deg,var(--copper-bright),var(--copper));
  box-shadow:0 10px 24px rgba(200,155,90,.28);
}
.btn--ghost{color:var(--cyan);border-color:rgba(53,196,198,.42);}
.btn--ghost:hover{background:var(--tint-cyan);border-color:var(--cyan);color:var(--cyan);}
.btn--block{width:100%;}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--stone);
}
.crumb{color:var(--stone);transition:color .16s ease;}
a.crumb:hover{color:var(--copper-bright);}
.crumb[aria-current="page"]{color:var(--cream);}
.crumb-sep{color:rgba(111,124,134,.58);}

.prose{max-width:70ch;}
.prose > * + *{margin-top:1.05em;}
.prose h2{font-size:clamp(22px,2.6vw,30px);line-height:1.28;}
.prose h3{font-size:clamp(17px,1.6vw,20px);line-height:1.4;margin-top:1.5em;}
.prose p,.prose li{font-size:inherit;line-height:1.8;color:rgba(242,237,227,.82);}
.prose ul > li{position:relative;padding-left:20px;margin-top:.5em;}
.prose ul > li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:9px;
  height:1px;
  background:var(--copper);
}
.prose a{color:var(--cyan);border-bottom:1px solid rgba(53,196,198,.42);}
.prose a:hover{color:var(--copper-bright);border-bottom-color:var(--copper);}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background-color:#0A2237;
  background-image:
    linear-gradient(135deg,rgba(53,196,198,.14),transparent 56%),
    linear-gradient(315deg,rgba(200,155,90,.16),transparent 62%);
}
.media-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(53,196,198,.10) 1px,transparent 1px),
    linear-gradient(90deg,rgba(53,196,198,.10) 1px,transparent 1px);
  background-size:48px 48px;
  opacity:.85;
}
.media-frame--tall{aspect-ratio:4 / 5;}
.media-frame--square{aspect-ratio:1 / 1;}

/* ---------- 10. 平板 / 移动端 ---------- */
html.is-nav-open{overflow:hidden;}

@media (max-width:1024px){
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    gap:9px;
    padding:9px 13px;
    border:1px solid var(--line-strong);
    border-radius:var(--radius);
    font-family:var(--font-mono);
    font-size:11.5px;
    letter-spacing:.16em;
    color:var(--copper-bright);
    transition:background-color .16s ease,border-color .16s ease;
  }
  .nav-toggle:hover,
  .nav-toggle[aria-expanded="true"]{
    background:var(--tint-copper);
    border-color:var(--copper-bright);
  }
  .nav-toggle-bars{
    display:inline-flex;
    flex-direction:column;
    justify-content:center;
    gap:3px;
    width:15px;
    height:12px;
  }
  .nav-toggle-bars span{display:block;height:1.5px;background:currentColor;}
  .nav-toggle-text{line-height:1;}

  .nav-panel{
    position:fixed;
    inset-block:0;
    inset-inline-end:0;
    z-index:80;
    width:min(340px,86vw);
    padding:20px 22px 32px;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:20px;
    overflow-y:auto;
    background:linear-gradient(180deg,#0D2A42 0%,#071A2B 72%);
    border-inline-start:1px solid var(--line-strong);
    box-shadow:-26px 0 64px rgba(0,0,0,.48);
    transform:translateX(104%);
    visibility:hidden;
    transition:transform .24s ease,visibility .24s ease;
  }
  .nav-panel[data-open]{transform:none;visibility:visible;}

  .nav-panel-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    padding-bottom:14px;
    border-bottom:1px solid var(--line);
  }
  .nav-panel-title{
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.18em;
    color:var(--stone-light);
  }
  .nav-close{
    padding:6px 10px;
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.14em;
    color:var(--copper-bright);
    border:1px solid var(--line-strong);
    border-radius:var(--radius);
    transition:background-color .16s ease,border-color .16s ease;
  }
  .nav-close:hover{background:var(--tint-copper);border-color:var(--copper-bright);}

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
  }
  .nav-link{
    display:block;
    padding:12px 10px;
    font-size:15px;
    border-bottom:1px solid var(--line-soft);
  }
  .nav-link::after{display:none;}
  .header-cta{justify-content:center;padding:13px 16px;font-size:14px;}

  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr));}
  .span-4{grid-column:span 3;}
  .span-6{grid-column:span 6;}
  .span-8{grid-column:span 6;}
}

@media (max-width:900px){
  .footer-top{grid-template-columns:minmax(0,1fr);}
  .footer-desc{max-width:none;}
}

@media (max-width:760px){
  .brand-tagline{display:none;}
  .brand-name{font-size:17.5px;}
  .brand-mark{width:34px;height:34px;font-size:17px;}
  .header-inner{padding-block:11px;gap:14px;}
  .grid--12{grid-template-columns:minmax(0,1fr);}
  .span-4,.span-6,.span-8,.span-12{grid-column:span 1;}
  .display{font-size:clamp(30px,9vw,46px);}
}

@media (max-width:560px){
  .footer-columns{grid-template-columns:minmax(0,1fr);gap:24px;}
  .footer-legal{flex-direction:column;align-items:flex-start;}
  .footer-contact{grid-template-columns:minmax(0,1fr);}
  .btn{width:100%;}
}

/* ---------- 11. 降低动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .panel:hover{transform:none;}
  .btn:hover,.header-cta:hover{transform:none;}
}