/* ==========================================================================
   百乐门棋牌中文站 · 共享样式 /assets/site.css
   深紫黑连续画布 + 堆叠画板 + 霓虹三色分工
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --bg:#0B0714;
  --panel:#140B26;
  --panel-2:#1F1233;
  --neon:#7B3FE4;
  --neon-light:#A275FF;
  --jade:#00E39A;
  --jade-deep:#0F2A22;
  --gold:#FFC542;
  --magenta:#FF5C8A;
  --ink:#F3EEFF;
  --ink-soft:#B9AEDA;
  --line:#2A1B45;

  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Source Han Serif SC","Songti SC","Noto Serif SC",Georgia,serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,Menlo,Consolas,monospace;

  --wrap:1180px;
  --step:8px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100%;
  background-color:var(--bg);
  background-image:
    radial-gradient(900px 520px at 10% -6%,rgba(123,63,228,.30),transparent 70%),
    radial-gradient(720px 440px at 94% 2%,rgba(0,227,154,.13),transparent 72%),
    radial-gradient(680px 420px at 46% 104%,rgba(255,197,66,.07),transparent 70%);
  background-repeat:no-repeat;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--neon-light);text-decoration:none}
a:hover{color:var(--ink)}
table{border-collapse:collapse;width:100%}
hr{border:0}
::selection{background:var(--neon);color:#fff}

:focus-visible{
  outline:2px solid var(--neon-light);
  outline-offset:3px;
  border-radius:0;
}
#main-content{display:block}
#main-content:focus-visible{outline:2px solid var(--neon-light);outline-offset:-2px}

/* ---------- 3. 排版 ---------- */
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.08;
  color:var(--ink);
  margin:0 0 .5em;
}
h1{font-size:clamp(2.4rem,6vw,4.5rem);max-width:20ch}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.25}
h4{font-size:1.05rem;letter-spacing:0}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
strong{font-weight:800;color:var(--ink)}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}
.lede{
  font-size:clamp(1.05rem,1.6vw,1.25rem);
  line-height:1.7;
  color:var(--ink-soft);
  max-width:62ch;
}
.prose{max-width:68ch}
.prose p{max-width:66ch}
.prose a{border-bottom:1px solid var(--neon)}
.eyebrow{
  font-family:var(--font-serif);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--jade);
  margin:0;
}
.rule{height:1px;background:var(--line);border:0;margin:clamp(24px,4vw,48px) 0}

/* ---------- 4. 容器与网格 ---------- */
.wrap{
  width:min(var(--wrap),100% - 40px);
  margin-inline:auto;
}
.stack{display:grid}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.section-head{display:grid;gap:12px;margin-bottom:clamp(24px,3vw,40px)}

/* ---------- 5. 堆叠画板 ---------- */
.panel{
  position:relative;
  padding-block:clamp(32px,5vw,72px);
  background:var(--panel);
  border-top:1px solid var(--line);
}
.panel--deep{background:var(--panel-2)}
.panel--canvas{background:transparent}
@media (min-width:900px){
  .panel--indent{margin-left:clamp(24px,4vw,64px)}
  .panel--indent-2{margin-left:clamp(48px,8vw,128px)}
}
.panel--edge{background:linear-gradient(90deg,var(--jade-deep),var(--panel) 62%)}
.panel--neon-edge::before{
  content:"";
  position:absolute;
  left:0;top:0;bottom:0;
  width:2px;
  background:linear-gradient(180deg,var(--neon-light),var(--jade));
  opacity:.85;
}

/* ---------- 6. 数据与徽章 ---------- */
.stat{display:grid;gap:4px;align-content:start}
.stat-value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.6rem,3vw,2.2rem);
  line-height:1.1;
  color:var(--gold);
}
.stat-label{
  font-family:var(--font-serif);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-soft);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  padding:3px 8px;
  border:1px solid var(--line);
  color:var(--ink-soft);
  text-transform:uppercase;
  white-space:nowrap;
}
.badge--jade{background:var(--jade);border-color:var(--jade);color:#04120C}
.badge--gold{background:var(--gold);border-color:var(--gold);color:#1A0F00}
.badge--magenta{border-color:var(--magenta);color:var(--magenta)}
.card{
  display:grid;
  gap:8px;
  padding:18px 20px;
  background:var(--panel-2);
  border-left:2px solid var(--neon);
}
.card--jade{border-left-color:var(--jade)}
.card--gold{border-left-color:var(--gold)}
.card h3{margin:0}
.chip{
  display:inline-flex;
  align-items:center;
  font-family:var(--font-mono);
  font-size:12px;
  padding:6px 12px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--ink-soft);
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease),background-color .16s var(--ease);
}
.chip:hover{border-color:var(--neon-light);color:var(--ink)}
.chip[aria-pressed="true"],.chip.is-active{
  background:rgba(123,63,228,.22);
  border-color:var(--neon-light);
  color:var(--ink);
}

/* ---------- 7. 分段标签 ---------- */
.seg{
  position:relative;
  display:flex;
  gap:2px;
  padding:3px;
  border:1px solid var(--line);
  background:var(--panel);
  overflow-x:auto;
  scrollbar-width:thin;
}
.seg-tab{
  position:relative;
  z-index:1;
  flex:1 0 auto;
  appearance:none;
  background:none;
  border:0;
  padding:9px 18px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.01em;
  color:var(--ink-soft);
  cursor:pointer;
  white-space:nowrap;
  transition:color .16s var(--ease);
}
.seg-tab:hover{color:var(--ink)}
.seg-tab[aria-selected="true"]{color:var(--ink)}
.seg-thumb{
  position:absolute;
  top:3px;
  bottom:3px;
  left:3px;
  width:0;
  background:rgba(123,63,228,.26);
  border-bottom:2px solid var(--neon-light);
  transition:transform .2s var(--ease),width .2s var(--ease);
  pointer-events:none;
}
.seg-panel{padding-block:clamp(20px,3vw,32px)}
.seg-panel[hidden]{display:none}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  border:1px solid transparent;
  background:transparent;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .16s var(--ease),border-color .16s var(--ease),color .16s var(--ease);
}
.btn:hover{color:var(--ink)}
.btn--sm{padding:8px 13px;font-size:13px}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#1A0F00}
.btn--gold:hover{background:#FFD776;border-color:#FFD776;color:#1A0F00}
.btn--jade{background:transparent;border-color:var(--jade);color:var(--jade)}
.btn--jade:hover{background:rgba(0,227,154,.12);color:var(--jade)}
.btn--ghost{background:rgba(31,18,51,.65);border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--neon-light);color:var(--neon-light)}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-soft);
  margin:0 0 clamp(16px,2vw,28px);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--line)}
.breadcrumb a{color:var(--ink-soft)}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb [aria-current="page"]{color:var(--gold)}

/* ---------- 10. 图片容器 ---------- */
.media{
  position:relative;
  overflow:hidden;
  background:var(--panel-2);
  border:1px solid var(--line);
  aspect-ratio:16 / 9;
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.03);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(180deg,rgba(11,7,20,0) 42%,rgba(11,7,20,.74) 100%),
    repeating-linear-gradient(45deg,rgba(255,255,255,.035) 0 1px,transparent 1px 3px);
}
.media--wide{aspect-ratio:21 / 9}
.media--tall{aspect-ratio:4 / 5}
.media--square{aspect-ratio:1 / 1}
.media-caption{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.5;
  color:var(--ink-soft);
}

/* ---------- 11. 入场显现 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
html.js [data-reveal].is-in{opacity:1;transform:none}

/* ==========================================================================
   12. 页头
   ========================================================================== */
.skip-link{
  position:absolute;
  left:12px;
  top:-72px;
  z-index:200;
  padding:10px 16px;
  background:var(--gold);
  color:#1A0F00;
  font-weight:800;
  font-size:14px;
  text-decoration:none;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px;color:#1A0F00}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(11,7,20,.95);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  display:block;
  height:3px;
  background:linear-gradient(90deg,var(--neon) 0%,var(--neon-light) 34%,var(--jade) 68%,var(--gold) 100%);
}
.masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  padding-block:clamp(14px,2.6vw,26px);
  border-bottom:1px solid var(--line);
  transition:padding-block .2s var(--ease);
}
.masthead-meta{
  margin:0;
  font-family:var(--font-serif);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-soft);
  max-height:80px;
  overflow:hidden;
  transition:opacity .18s var(--ease),max-height .2s var(--ease);
}
.masthead-meta--left{text-align:left}
.masthead-meta--right{text-align:right;color:var(--jade)}
.brand{
  justify-self:center;
  display:inline-flex;
  flex-direction:column;
  align-items:center;
  gap:5px;
  padding:0 6px;
  color:var(--ink);
  text-decoration:none;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  display:grid;
  place-items:center;
  width:28px;
  height:28px;
  border:1px solid var(--neon);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1;
}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,4vw,2.4rem);
  line-height:1.05;
  letter-spacing:-.02em;
  white-space:nowrap;
}
.brand-sub{
  font-family:var(--font-serif);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--ink-soft);
  max-height:40px;
  overflow:hidden;
  transition:opacity .18s var(--ease),max-height .2s var(--ease);
}
.site-header[data-collapsed="true"] .masthead{padding-block:8px}
.site-header[data-collapsed="true"] .masthead-meta,
.site-header[data-collapsed="true"] .brand-sub{
  opacity:0;
  max-height:0;
  margin:0;
}

.nav-bar{position:relative;background:rgba(20,11,38,.9)}
.nav-inner{
  display:flex;
  align-items:center;
  min-height:56px;
}
.nav-menu{
  position:relative;
  display:flex;
  align-items:center;
  flex:1;
  min-width:0;
}
.nav-list{
  display:flex;
  flex:1;
  align-items:center;
  justify-content:center;
  gap:clamp(10px,2vw,26px);
}
.nav-item{display:flex}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:16px 2px;
  color:var(--ink-soft);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  transition:color .16s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--neon-light),var(--jade));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .18s var(--ease),background-color .18s var(--ease);
}
.nav-link:hover{color:var(--ink)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--ink)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold)}
.nav-index{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:11px;
  letter-spacing:0;
  color:var(--neon-light);
}
.nav-link[aria-current="page"] .nav-index{color:var(--gold)}
.nav-quick{
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  display:flex;
  align-items:center;
  gap:10px;
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:8px 14px;
  background:none;
  border:1px solid var(--line);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  cursor:pointer;
}
.nav-toggle-bars{position:relative;display:block;width:18px;height:10px}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:var(--gold);
  transition:transform .2s var(--ease),top .2s var(--ease),bottom .2s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
[data-nav][data-open="true"] .nav-toggle{
  border-color:var(--neon-light);
  color:var(--neon-light);
}
[data-nav][data-open="true"] .nav-toggle-bars::before{top:4px;transform:rotate(45deg)}
[data-nav][data-open="true"] .nav-toggle-bars::after{bottom:4px;transform:rotate(-45deg)}

.scroll-progress{
  height:2px;
  width:100%;
  background:linear-gradient(90deg,var(--neon),var(--jade),var(--gold));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .1s linear;
}

/* ==========================================================================
   13. 页脚
   ========================================================================== */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background:var(--panel);
  border-top:1px solid var(--line);
}
.footer-inner{
  display:grid;
  grid-template-columns:minmax(220px,1.1fr) 2fr;
  gap:clamp(24px,4vw,64px);
  padding-block:clamp(40px,6vw,72px);
}
.footer-brand-name{
  margin:0 0 8px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.4rem,3vw,2rem);
  letter-spacing:-.02em;
  line-height:1.1;
}
.footer-brand-line{
  margin:0 0 12px;
  color:var(--ink-soft);
  font-size:15px;
  max-width:34ch;
}
.footer-note{
  margin:0;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--jade);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,40px);
}
.footer-col-title{
  margin:0 0 14px;
  font-family:var(--font-serif);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--jade);
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  display:inline-block;
  color:var(--ink-soft);
  font-size:15px;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-links a:hover{color:var(--ink);border-bottom-color:var(--neon-light)}
.footer-meta-list{
  display:grid;
  gap:10px;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:12.5px;
  line-height:1.6;
  color:var(--ink-soft);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:18px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--ink-soft);
}
.footer-legal-line{margin:0;max-width:76ch}
.footer-copy{
  margin:0;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  color:var(--ink-soft);
}

/* ==========================================================================
   14. 响应式
   ========================================================================== */
@media (max-width:900px){
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:860px){
  body{font-size:16px}
  .masthead{grid-template-columns:1fr;padding-block:14px}
  .masthead-meta{display:none}
  .brand-sub{font-size:10px}

  .nav-inner{
    justify-content:space-between;
    min-height:54px;
  }
  .nav-toggle{display:inline-flex}
  .nav-menu{
    position:absolute;
    left:0;right:0;top:100%;
    display:block;
    padding:12px 20px 20px;
    background:var(--panel-2);
    border-bottom:1px solid var(--line);
    visibility:hidden;
    opacity:0;
    transform:translateY(-8px);
    pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  [data-nav][data-open="true"] .nav-menu{
    visibility:visible;
    opacity:1;
    transform:translateY(0);
    pointer-events:auto;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-link{
    width:100%;
    padding:13px 2px;
    border-bottom:1px solid var(--line);
    font-size:16px;
  }
  .nav-quick{
    position:static;
    transform:none;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    margin-top:16px;
  }
  .nav-quick .btn{width:100%}
}
@media (max-width:620px){
  .wrap{width:min(var(--wrap),100% - 28px)}
  h1{font-size:clamp(2rem,9vw,3rem)}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-legal{flex-direction:column;align-items:flex-start}
  .seg-tab{padding:9px 13px;font-size:13px}
}
@media (max-width:420px){
  .footer-cols{grid-template-columns:1fr}
}

/* ---------- 15. 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;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}