/* ==========================================================================
   万博的娱乐 · 共享样式表  /assets/site.css
   夜间快速通道：深墨蓝承载结构，霓虹青只做引导，品红与琥珀金只指向入口与档位
   ========================================================================== */

/* --- 1. 设计令牌 ---------------------------------------------------------- */
:root{
  /* 底色层 */
  --ink:#0A1A2F;
  --ink-2:#10263F;
  --line:#1B3A5C;
  --paper:#F4EFE6;

  /* 信号层 */
  --neon:#2FE0D0;
  --neon-soft:#8FF3EA;
  --neon-deep:#0E7C74;
  --pulse:#FF3D7F;
  --amber:#FFB03A;
  --mist:#93A4B8;

  /* 档位四色（仅在档位组件内出现） */
  --tier-1:#3B7FA8;
  --tier-2:#2FA7A0;
  --tier-3:#FFB03A;
  --tier-4:#FF3D7F;

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

  /* 字号阶梯（1.25 比例） */
  --fs-note:13px;
  --fs-small:14px;
  --fs-body:17px;
  --fs-h4:21px;
  --fs-h3:26px;
  --fs-h2:33px;
  --fs-h1:clamp(34px,5vw,52px);
  --fs-display:clamp(40px,7vw,96px);

  /* 版式度量 */
  --wrap:1180px;
  --gap:clamp(16px,2.4vw,28px);
  --sec:clamp(44px,7vw,92px);
  --radius:0;
}

/* --- 2. 重置与基础 -------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:132px;
}

body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,svg,video{display:block;max-width:100%;height:auto}

button,input,select,textarea{font:inherit;color:inherit}

a{color:var(--neon);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--neon-soft)}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.15;
  color:var(--paper);
}
h1{font-size:var(--fs-h1);line-height:1.08}
h2{font-size:var(--fs-h2);line-height:1.2}
h3{font-size:var(--fs-h3);line-height:1.25}
h4{font-size:var(--fs-h4);line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}

hr{border:0;border-top:1px solid var(--line);margin:0}

:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:3px;
}

::selection{background:var(--neon);color:var(--ink)}

/* --- 3. 通用工具 ---------------------------------------------------------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,32px);
}

.mono{
  font-family:var(--font-mono);
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}

.section{padding-block:var(--sec)}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 24px;
  padding-bottom:16px;
  margin-bottom:clamp(22px,3.4vw,40px);
  border-bottom:1px solid var(--line);
}

.index-label{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--neon);
}
.index-label::before{
  content:"";
  width:22px;
  height:2px;
  background:currentColor;
  flex:none;
}

/* --- 4. 跳转链接 ---------------------------------------------------------- */
.skip-link{
  position:fixed;
  top:-80px;
  left:12px;
  z-index:200;
  display:inline-block;
  padding:10px 18px;
  background:var(--neon);
  color:var(--ink);
  font-weight:800;
  letter-spacing:.02em;
  border:2px solid var(--ink);
  transition:top .18s ease;
}
.skip-link:focus{
  top:12px;
  color:var(--ink);
  outline:2px solid var(--paper);
  outline-offset:2px;
}

/* --- 5. 站点刊头 ---------------------------------------------------------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}

.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  z-index:3;
  overflow:hidden;
  pointer-events:none;
}
.header-progress::after{
  content:"";
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--neon) 0%,var(--neon-soft) 55%,var(--amber) 100%);
  transform:scaleX(var(--progress,0));
  transform-origin:0 50%;
  transition:transform .1s linear;
}

/* 顶部等宽索引带 */
.header-rail{
  max-height:48px;
  overflow:hidden;
  background:var(--ink-2);
  border-bottom:1px solid var(--line);
  transition:max-height .28s cubic-bezier(.2,.7,.3,1),opacity .28s ease,border-color .28s ease;
}
.header-rail .rail-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:10px;
  font-size:11px;
  color:var(--mist);
  text-transform:uppercase;
  letter-spacing:.14em;
}
.rail-index{color:var(--neon)}
.rail-edition{color:var(--mist)}

.site-header[data-condensed="true"] .header-rail{
  max-height:0;
  opacity:0;
  border-bottom-color:transparent;
}

/* 报头带 */
.masthead-band{background:var(--ink)}

.masthead-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  padding-block:16px 14px;
  transition:padding-block .28s cubic-bezier(.2,.7,.3,1);
}
.site-header[data-condensed="true"] .masthead-inner{padding-block:10px}

.masthead-index{
  justify-self:start;
  font-size:11px;
  color:var(--mist);
  text-transform:uppercase;
  letter-spacing:.18em;
  border-left:2px solid var(--line);
  padding-left:10px;
}

.masthead{
  justify-self:center;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  color:var(--paper);
  padding:2px 10px;
}
.masthead:hover{color:var(--paper)}
.masthead-name{
  font-size:clamp(21px,2.6vw,30px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.05;
}
.masthead-sub{
  font-size:10px;
  letter-spacing:.3em;
  color:var(--neon);
}
.masthead:hover .masthead-sub{color:var(--neon-soft)}

.masthead-actions{
  justify-self:end;
  display:flex;
  align-items:center;
  gap:10px;
}

/* 移动端栏目按钮 */
.nav-toggle{
  display:none;
  grid-column:3;
  align-items:center;
  gap:8px;
  padding:9px 12px;
  background:transparent;
  color:var(--neon);
  border:2px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon-soft)}
.nav-toggle-bars{
  position:relative;
  width:16px;
  height:10px;
  flex:none;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform .2s ease;
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-4px) rotate(-45deg)}

/* --- 6. 导航 -------------------------------------------------------------- */
.site-nav{
  background:var(--ink);
  border-top:1px solid var(--line);
}

.nav-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
}

.nav-list a{
  position:relative;
  display:block;
  padding:12px clamp(10px,2vw,22px);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--mist);
  border-bottom:2px solid transparent;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.nav-list a:hover{
  color:var(--paper);
  background:var(--ink-2);
}
.nav-list a[aria-current="page"]{
  color:var(--neon);
  border-bottom-color:var(--neon);
}

/* --- 7. 按钮 -------------------------------------------------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-size:15px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.02em;
  border:2px solid transparent;
  border-radius:0;
  cursor:pointer;
  text-align:center;
  transition:transform .18s cubic-bezier(.2,.7,.3,1),
             background-color .18s ease,
             border-color .18s ease,
             color .18s ease,
             box-shadow .18s ease;
}

.btn-signal{
  background:var(--pulse);
  border-color:var(--pulse);
  color:#08131F;
  box-shadow:4px 4px 0 0 rgba(47,224,208,.32);
}
.btn-signal:hover{
  color:#08131F;
  transform:translate(3px,-3px);
  box-shadow:7px 7px 0 0 var(--neon);
}
.btn-signal:active{
  background:var(--neon-soft);
  border-color:var(--neon-soft);
  transform:translate(1px,-1px);
  box-shadow:2px 2px 0 0 var(--neon);
}

.btn-quiet{
  background:transparent;
  border-color:var(--line);
  color:var(--neon);
}
.btn-quiet:hover{
  color:var(--neon-soft);
  border-color:var(--neon);
  transform:translate(3px,-3px);
  box-shadow:3px 3px 0 0 rgba(47,224,208,.22);
}
.btn-quiet:active{
  transform:translate(1px,-1px);
  box-shadow:1px 1px 0 0 rgba(47,224,208,.3);
}

/* --- 8. 标签 -------------------------------------------------------------- */
.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mist);
  background:rgba(255,255,255,.02);
  border:1px solid var(--line);
}
.tag[data-tone="neon"]{color:var(--neon);border-color:var(--neon)}
.tag[data-tone="amber"]{color:var(--amber);border-color:var(--amber)}
.tag[data-tone="pulse"]{color:var(--pulse);border-color:var(--pulse)}

/* --- 9. 面板与卡片 -------------------------------------------------------- */
.panel{
  background:var(--paper);
  color:var(--ink);
  border:2px solid var(--ink);
  box-shadow:8px 8px 0 0 rgba(47,224,208,.18);
  padding:clamp(20px,3.4vw,40px);
}
.panel h1,.panel h2,.panel h3,.panel h4{color:var(--ink)}
.panel p{color:#1D2C3D}
.panel a{color:var(--neon-deep);border-bottom:1px solid rgba(14,124,116,.4)}
.panel a:hover{color:#0A5B55}
.panel .index-label{color:var(--neon-deep)}

.panel-dark{
  background:var(--ink-2);
  color:var(--paper);
  border:2px solid var(--line);
  padding:clamp(20px,3.4vw,40px);
}

.card{
  background:var(--ink-2);
  border:1px solid var(--line);
  border-top:2px solid var(--neon);
  padding:clamp(18px,2.6vw,28px);
}
.card[data-accent="amber"]{border-top-color:var(--amber)}
.card[data-accent="pulse"]{border-top-color:var(--pulse)}
.card h3,.card h4{color:var(--paper)}
.card p{color:#C6D3E1}

/* --- 10. 档位色卡 --------------------------------------------------------- */
.tier-chip{
  --tier:var(--tier-1);
  display:grid;
  gap:6px;
  width:100%;
  padding:14px 16px;
  text-align:left;
  background:var(--ink-2);
  color:var(--paper);
  border:2px solid var(--line);
  border-left:6px solid var(--tier);
  cursor:pointer;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.tier-chip[data-tier="1"]{--tier:var(--tier-1)}
.tier-chip[data-tier="2"]{--tier:var(--tier-2)}
.tier-chip[data-tier="3"]{--tier:var(--tier-3)}
.tier-chip[data-tier="4"]{--tier:var(--tier-4)}
.tier-chip:hover{transform:translate(2px,-2px)}
.tier-chip[aria-pressed="true"]{
  border-color:var(--tier);
  box-shadow:5px 5px 0 0 rgba(47,224,208,.22);
}
.tier-chip .tier-name{
  font-size:var(--fs-h4);
  font-weight:800;
  letter-spacing:-.01em;
}
.tier-chip .tier-code{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}
.tier-chip[aria-pressed="true"] .tier-code{color:var(--tier)}

/* --- 11. 网格 ------------------------------------------------------------- */
.grid{display:grid;gap:var(--gap)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* --- 12. 面包屑 ----------------------------------------------------------- */
.breadcrumbs{
  padding-top:clamp(20px,3vw,32px);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 2px;
}
.breadcrumbs li{display:inline-flex;align-items:center}
.breadcrumbs li::after{
  content:"/";
  margin-inline:8px;
  color:var(--line);
}
.breadcrumbs li:last-child::after{content:"";margin:0}
.breadcrumbs a{color:var(--mist)}
.breadcrumbs a:hover{color:var(--neon)}
.breadcrumbs [aria-current="page"]{color:var(--neon-soft)}

/* --- 13. 正文容器 --------------------------------------------------------- */
.prose{
  max-width:42em;
  font-size:var(--fs-body);
  line-height:1.78;
  color:#DCE6F0;
}
.prose p{margin:0}
.prose p + p{margin-top:1em}
.prose h2{
  margin-top:1.9em;
  margin-bottom:.6em;
  padding-top:.5em;
  border-top:1px solid var(--line);
  font-size:var(--fs-h3);
}
.prose h3{margin-top:1.5em;margin-bottom:.5em;font-size:var(--fs-h4)}
.prose ul,.prose ol{margin-top:.9em;display:grid;gap:.55em}
.prose ul li{position:relative;padding-left:20px}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:9px;
  height:2px;
  background:var(--neon);
}
.prose ol{counter-reset:prose-ol}
.prose ol li{position:relative;padding-left:30px;counter-increment:prose-ol}
.prose ol li::before{
  content:counter(prose-ol,decimal-leading-zero);
  position:absolute;
  left:0;
  top:.15em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--neon);
}
.prose strong{color:var(--paper);font-weight:800}
.prose hr{margin-block:2em}
.prose .note{
  font-size:var(--fs-note);
  color:var(--mist);
  line-height:1.6;
}

/* --- 14. 图片容器 --------------------------------------------------------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:
    linear-gradient(155deg,var(--ink-2) 0%,#0C2036 55%,#0A1A2F 100%);
  border:2px solid var(--line);
}
.media-frame[data-ratio="21:9"]{aspect-ratio:21 / 9}
.media-frame[data-ratio="4:3"]{aspect-ratio:4 / 3}
.media-frame[data-ratio="1:1"]{aspect-ratio:1 / 1}
.media-frame > img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    linear-gradient(135deg,rgba(47,224,208,.14) 0%,rgba(47,224,208,0) 52%),
    linear-gradient(0deg,rgba(10,26,47,.55) 0%,rgba(10,26,47,0) 60%);
}
.media-frame figcaption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:10px 14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--neon-soft);
}

/* --- 15. 页脚 ------------------------------------------------------------- */
.site-footer{
  margin-top:clamp(56px,9vw,120px);
  background:var(--ink-2);
  border-top:2px solid var(--line);
  color:var(--paper);
}

.footer-ramp{
  height:3px;
  background:linear-gradient(
    90deg,
    var(--neon) 0 16%,
    transparent 16% 20%,
    var(--tier-2) 20% 38%,
    transparent 38% 42%,
    var(--amber) 42% 58%,
    transparent 58% 62%,
    var(--pulse) 62% 78%,
    var(--line) 78% 100%
  );
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr repeat(3,minmax(0,1fr));
  gap:clamp(22px,4vw,52px);
  padding-block:clamp(36px,6vw,64px) clamp(28px,4vw,46px);
}

.footer-mark{
  display:inline-block;
  font-size:22px;
  font-weight:900;
  letter-spacing:-.02em;
  color:var(--paper);
}
.footer-mark:hover{color:var(--neon)}

.footer-tag{
  margin-top:8px;
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--neon);
}

.footer-contact{
  margin-top:16px;
  font-size:var(--fs-small);
  line-height:1.8;
  color:var(--mist);
}

.footer-address{
  margin-top:8px;
  font-size:var(--fs-note);
  color:var(--mist);
}

.footer-col h2{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--neon);
}
.footer-col li + li{margin-top:10px}
.footer-col a{
  display:inline-block;
  font-size:15px;
  color:#CFDCEA;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-col a:hover{
  color:var(--neon);
  border-bottom-color:var(--neon);
}

.footer-base{
  border-top:1px solid var(--line);
  background:var(--ink-2);
}
.footer-base-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px 26px;
}
.footer-legal{
  font-size:var(--fs-note);
  color:var(--mist);
}
.footer-note{
  font-size:var(--fs-note);
  line-height:1.6;
  color:var(--mist);
}

/* --- 16. 滚动显现 --------------------------------------------------------- */
[data-reveal="pending"]{
  opacity:0;
  transform:translateY(16px);
}
[data-reveal="shown"]{
  opacity:1;
  transform:none;
  transition:opacity .5s ease,transform .5s cubic-bezier(.2,.7,.3,1);
}

/* --- 17. 响应式 ----------------------------------------------------------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1.3fr repeat(3,minmax(0,1fr))}
}

@media (max-width:900px){
  .masthead-inner{
    grid-template-columns:minmax(0,1fr) auto auto;
    gap:12px;
    padding-block:13px 11px;
  }
  .masthead-index{display:none}
  .masthead{justify-self:start;align-items:flex-start;text-align:left;padding:0}
  .masthead-actions{justify-self:end;gap:8px}
  .masthead-actions .btn-quiet{display:none}
  .masthead-actions .btn{padding:9px 13px;font-size:13px}
  .nav-toggle{display:inline-flex}

  .site-nav{
    max-height:0;
    overflow:hidden;
    border-top:1px solid var(--line);
    transition:max-height .3s cubic-bezier(.2,.7,.3,1);
  }
  .site-nav[data-open="true"]{max-height:540px}

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    padding-block:6px 10px;
  }
  .nav-list li + li{border-top:1px solid var(--line)}
  .nav-list a{
    padding:15px 2px;
    font-size:16px;
    border-bottom:0;
    border-left:2px solid transparent;
  }
  .nav-list a:hover{background:transparent;padding-left:12px}
  .nav-list a[aria-current="page"]{
    border-bottom-color:transparent;
    border-left-color:var(--neon);
    padding-left:12px;
  }

  .grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}

  .footer-grid{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:28px 24px;
  }
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:640px){
  html{scroll-padding-top:96px}
  .masthead-sub{display:none}
  .masthead-name{font-size:20px}
  .masthead-actions .btn{padding:8px 11px;font-size:12.5px;box-shadow:3px 3px 0 0 rgba(47,224,208,.3)}
  .nav-toggle{padding:8px 10px}
  .nav-toggle-text{display:none}

  .grid-2,.grid-3,.grid-4{grid-template-columns:minmax(0,1fr)}

  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-base-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:8px;
  }

  .panel{box-shadow:5px 5px 0 0 rgba(47,224,208,.18)}
}

/* --- 18. 降低动效 --------------------------------------------------------- */
@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="pending"],
  [data-reveal="shown"]{
    opacity:1;
    transform:none;
    transition:none;
  }
  .header-rail{transition:none}
  .header-progress::after{transition:none}
}