/* ==========================================================
   万能棋牌 · 共享样式表  /assets/site.css
   深墨绿桌绒 + 暖金结构 + 霓虹状态色
   ========================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --felt:#0A1F19;
  --felt-deep:#10302A;
  --raise:#1A4A3E;
  --line-gold:#C9A65C;
  --gold:#E8C77A;
  --gold-soft:#F3E3B8;
  --cyan:#3EE0D0;
  --magenta:#FF4FA3;
  --heat-a:#F97316;
  --heat-b:#FF3D2E;
  --ink:#EAF3EF;
  --ink-dim:#93AFA5;
  --hair:rgba(201,166,92,.28);
  --hair-soft:rgba(201,166,92,.14);
  --shadow-1:0 2px 6px rgba(0,0,0,.28);
  --shadow-2:0 4px 14px rgba(0,0,0,.34);
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-narrow:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --gutter:24px;
  --shell:1440px;
  --pad:24px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--felt);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 16% 8%, rgba(232,199,122,.07), transparent 42%),
    radial-gradient(circle at 86% 82%, rgba(62,224,208,.05), transparent 46%),
    radial-gradient(rgba(255,255,255,.022) 1px, transparent 1px);
  background-size:auto,auto,4px 4px;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0}
input,select,textarea{font:inherit;color:inherit}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px}
::selection{background:var(--gold);color:#08180F}

#main-content{position:relative;z-index:1}
.visually-hidden{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 3. 布局骨架 ---------- */
.shell{
  position:relative;
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--pad);
}
.section{padding:64px 0}
.section--tight{padding:40px 0}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 24px;
  padding-bottom:16px;
  margin-bottom:28px;
  border-bottom:1px solid var(--hair-soft);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gutter);
}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-12{grid-column:span 12}
.stack>*+*{margin-top:16px}
.rule{height:1px;border:0;margin:24px 0;background:var(--hair-soft)}

/* ---------- 4. 文字层级 ---------- */
.display{
  font-family:var(--font-narrow);
  font-weight:300;
  font-size:clamp(40px,7vw,96px);
  line-height:1.02;
  letter-spacing:-.02em;
  font-stretch:condensed;
}
.h2{
  font-family:var(--font-narrow);
  font-weight:900;
  font-size:clamp(24px,3vw,34px);
  line-height:1.2;
  letter-spacing:-.01em;
}
.h3{font-size:18px;font-weight:800;line-height:1.4;letter-spacing:.01em}
.lede{font-size:17px;line-height:1.75;color:var(--ink-dim);max-width:68ch}
.kicker{font-size:12px;line-height:1.6;letter-spacing:.18em;color:var(--line-gold);text-transform:uppercase}
.meta{font-size:12px;line-height:1.6;letter-spacing:.08em;color:var(--ink-dim)}
.muted{color:var(--ink-dim)}
.gold{color:var(--gold)}

.num,.num-md,.num-lg{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.01em;
}
.num{font-size:17px;color:var(--gold-soft)}
.num-md{font-size:22px;color:var(--gold-soft)}
.num-lg{font-size:clamp(28px,4vw,40px);line-height:1;color:var(--gold-soft)}

/* ---------- 5. 通用按钮 / 标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  border:1px solid var(--hair);
  background:transparent;
  color:var(--ink);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--gold{background:var(--gold);border-color:var(--gold);color:#08180F}
.btn--gold:hover{background:var(--gold-soft);border-color:var(--gold-soft)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft);background:rgba(26,74,62,.5)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 8px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.08em;
  white-space:nowrap;
  border:1px solid var(--hair);
  background:rgba(26,74,62,.35);
  color:var(--ink-dim);
}
.tag--live{background:var(--cyan);border-color:var(--cyan);color:#06201C;font-weight:700}
.tag--full{background:var(--magenta);border-color:var(--magenta);color:#1B0713;font-weight:700}
.tag--gold{background:var(--gold);border-color:var(--gold);color:#08180F;font-weight:700}

.heat{display:flex;align-items:center;gap:10px}
.heat__track{
  position:relative;
  flex:1 1 auto;
  height:6px;
  min-width:60px;
  background:rgba(201,166,92,.18);
  overflow:hidden;
}
.heat__fill{
  height:100%;
  width:var(--heat,50%);
  background:linear-gradient(90deg,var(--heat-a),var(--heat-b));
  transition:width .24s var(--ease);
}

/* ---------- 6. 面板与卡片网格 ---------- */
.panel{
  padding:20px;
  background:linear-gradient(180deg,var(--felt-deep),rgba(16,48,42,.72));
  border:1px solid var(--hair-soft);
  box-shadow:var(--shadow-1);
}
.panel--raise{
  background:linear-gradient(180deg,var(--raise),rgba(26,74,62,.55));
  border-color:var(--hair);
}
.panel--gloss{position:relative;overflow:hidden}
.panel--gloss::before{
  content:"";
  position:absolute;
  top:-45%;
  right:-18%;
  width:180px;
  height:180px;
  background:radial-gradient(circle,rgba(232,199,122,.18),transparent 70%);
  pointer-events:none;
}
.card-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(260px,1fr));
  gap:16px;
}
.card-grid--stagger>*:nth-child(even){margin-top:12px}
.off-up{margin-top:-12px}
.off-down{margin-top:12px}
.is-filtered-out{display:none!important}

/* ---------- 7. 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--hair-soft);
  background:linear-gradient(160deg,#0D2A23,#081A15 70%);
  box-shadow:var(--shadow-1);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(120% 90% at 15% -10%,rgba(232,199,122,.12),transparent 62%);
}
.media img,.media svg{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--3x2{aspect-ratio:3/2}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media__cap{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:10px 12px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--gold-soft);
  background:linear-gradient(0deg,rgba(8,24,15,.92),transparent);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{font-size:12px;letter-spacing:.08em;color:var(--ink-dim)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:0 8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li::after{content:"/";color:var(--line-gold);opacity:.6}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--ink-dim)}
.breadcrumb a:hover{color:var(--gold-soft)}
.breadcrumb [aria-current="page"]{color:var(--gold)}

/* ---------- 9. 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:12px;
  top:-72px;
  z-index:200;
  padding:10px 16px;
  font-size:14px;
  font-weight:700;
  color:#08180F;
  background:var(--gold);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}

/* ---------- 10. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,31,25,.94);
  border-bottom:1px solid var(--hair);
  box-shadow:var(--shadow-1);
  transition:box-shadow .18s var(--ease);
}
.site-header[data-condensed]{box-shadow:var(--shadow-2)}

.header-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:16px 0 12px;
  transition:padding .18s var(--ease);
}
.site-header[data-condensed] .header-top{padding:6px 0}

.brand{
  display:grid;
  grid-template-columns:auto 1fr;
  grid-template-rows:auto auto;
  align-items:center;
  column-gap:12px;
  min-width:0;
}
.brand-mark{
  grid-row:1 / span 2;
  width:12px;
  height:12px;
  background:var(--gold);
  box-shadow:0 0 0 3px rgba(232,199,122,.18);
}
.brand-line{
  grid-column:2;
  font-family:var(--font-narrow);
  font-size:20px;
  font-weight:800;
  line-height:1.25;
  letter-spacing:.03em;
  color:var(--ink);
  transition:font-size .18s var(--ease);
}
.brand-subline{
  grid-column:2;
  font-size:12px;
  line-height:1.5;
  letter-spacing:.08em;
  color:var(--ink-dim);
  white-space:nowrap;
}
.site-header[data-condensed] .brand-line{font-size:17px}
.site-header[data-condensed] .brand-subline{display:none}

.header-tools{display:flex;align-items:center;gap:12px;flex:none}

.device-switch{
  display:inline-flex;
  border:1px solid var(--hair);
  background:rgba(16,48,42,.6);
}
.device-btn{
  padding:6px 12px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-dim);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.device-btn+.device-btn{border-left:1px solid var(--hair-soft)}
.device-btn:hover{color:var(--gold-soft)}
.device-btn.is-active{background:rgba(232,199,122,.16);color:var(--gold-soft);font-weight:700}

.tool-link{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink-dim);
  padding:6px 2px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.tool-link:hover{color:var(--gold-soft);border-bottom-color:var(--gold)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:7px 12px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--gold-soft);
  border:1px solid var(--hair);
  cursor:pointer;
}
.nav-toggle-bars{
  position:relative;
  width:14px;
  height:1px;
  background:currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:14px;
  height:1px;
  background:currentColor;
}
.nav-toggle-bars::before{top:-5px}
.nav-toggle-bars::after{top:5px}
.nav-toggle[aria-expanded="true"]{background:rgba(232,199,122,.14);border-color:var(--gold)}
.nav-toggle-text{font-weight:700}

.header-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:10px 0 12px;
  border-top:1px solid var(--hair-soft);
}

.index-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 0;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--line-gold);
  cursor:pointer;
  transition:color .18s var(--ease);
}
.index-toggle:hover{color:var(--gold-soft)}
.index-toggle-dot{
  width:7px;
  height:7px;
  background:var(--gold);
  transition:background .18s var(--ease),box-shadow .18s var(--ease);
}
.index-toggle[aria-expanded="false"] .index-toggle-dot{
  background:transparent;
  box-shadow:inset 0 0 0 1px var(--gold);
}
.index-toggle-text{font-weight:700}

.site-nav{display:block}
.nav-list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:4px;
}
.nav-list a{
  display:block;
  padding:8px 12px;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--ink-dim);
  border:1px solid transparent;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.nav-list a:hover{color:var(--gold-soft);border-color:var(--hair);background:rgba(26,74,62,.55)}
.nav-list a[aria-current="page"]{
  color:#08180F;
  background:var(--gold);
  border-color:var(--gold);
  font-weight:700;
}

.index-bar{
  border-top:1px solid var(--hair);
  background:linear-gradient(90deg,var(--felt-deep),rgba(10,31,25,.82));
}
.index-bar-inner{
  display:flex;
  align-items:center;
  gap:14px;
  padding:8px 0;
  overflow-x:auto;
  overscroll-behavior-x:contain;
  scrollbar-width:thin;
  transition:padding .18s var(--ease);
}
.site-header[data-condensed] .index-bar-inner{padding:5px 0}
.index-bar-label{
  flex:none;
  padding-right:14px;
  border-right:1px solid var(--hair);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--line-gold);
  white-space:nowrap;
}
.index-tags{display:flex;align-items:center;gap:6px;flex:none}
.index-tag{
  padding:5px 10px;
  font-size:12px;
  line-height:1.6;
  letter-spacing:.08em;
  white-space:nowrap;
  color:var(--ink-dim);
  border:1px solid var(--hair);
  background:rgba(10,31,25,.4);
  cursor:pointer;
  transition:color .18s var(--ease),background .18s var(--ease),border-color .18s var(--ease);
}
.index-tag:hover{color:var(--gold-soft);border-color:var(--gold)}
.index-tag.is-active{
  color:#08180F;
  background:var(--gold);
  border-color:var(--gold);
  font-weight:700;
}

/* ---------- 11. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:64px;
  background:linear-gradient(180deg,var(--felt-deep),#08180F);
  border-top:1px solid var(--hair);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1.3fr;
  gap:32px;
  padding:56px 0 36px;
}
.footer-brand-line{
  font-family:var(--font-narrow);
  font-size:22px;
  font-weight:800;
  letter-spacing:.03em;
  color:var(--gold-soft);
}
.footer-brand-sub{
  margin-top:4px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--line-gold);
}
.footer-service{
  margin-top:14px;
  max-width:34ch;
  font-size:13px;
  line-height:1.8;
  color:var(--ink-dim);
}
.footer-col-title{
  margin-bottom:14px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--line-gold);
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{
  font-size:14px;
  color:var(--ink-dim);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-col a:hover{color:var(--gold-soft);border-bottom-color:var(--gold)}
.footer-line{margin-bottom:10px}
.copy-chip{
  display:inline-block;
  padding:7px 10px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
  color:var(--ink);
  border:1px dashed rgba(201,166,92,.42);
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.copy-chip:hover{border-style:solid;border-color:var(--gold);color:var(--gold-soft);background:rgba(26,74,62,.4)}
.footer-address{
  margin-top:12px;
  font-size:12px;
  line-height:1.8;
  letter-spacing:.04em;
  color:var(--ink-dim);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding:18px 0 40px;
  border-top:1px solid var(--hair-soft);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--ink-dim);
}
.footer-icp{font-family:var(--font-mono);letter-spacing:.02em}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal a{color:var(--ink-dim)}
.footer-legal a:hover{color:var(--gold-soft)}
.footer-copy{font-family:var(--font-mono);letter-spacing:.02em}

.copy-toast{
  position:fixed;
  left:50%;
  bottom:28px;
  z-index:120;
  padding:10px 18px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  color:#08180F;
  background:var(--gold);
  box-shadow:var(--shadow-2);
  opacity:0;
  transform:translate(-50%,12px);
  pointer-events:none;
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.copy-toast.is-on{opacity:1;transform:translate(-50%,0)}

/* ---------- 12. 显现 ---------- */
[data-reveal]{opacity:1;transform:none}
.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .4s var(--ease),transform .4s var(--ease);
}
.js-ready [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:36px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:1024px){
  :root{--gutter:16px}
  .span-3,.span-4{grid-column:span 6}
  .span-2{grid-column:span 4}
}
@media (max-width:900px){
  :root{--pad:16px}
  .section{padding:48px 0}
  .section--tight{padding:32px 0}
  .nav-toggle{display:inline-flex}
  .site-header{position:sticky}
  .site-nav{
    display:none;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    z-index:70;
    padding:8px 16px 20px;
    background:var(--felt-deep);
    border-top:1px solid var(--hair-soft);
    border-bottom:1px solid var(--hair);
    box-shadow:var(--shadow-2);
  }
  .site-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list a{padding:14px 4px;border-bottom:1px solid var(--hair-soft);font-size:15px}
  .nav-list a[aria-current="page"]{
    background:transparent;
    color:var(--gold);
    border-color:transparent;
    border-bottom-color:var(--gold);
  }
  .header-bar{padding:8px 0 10px}
  .brand-subline{white-space:normal}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:720px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px}
  .span-2,.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-10,.span-12{grid-column:1 / -1}
  .card-grid{grid-template-columns:1fr}
  .card-grid--stagger>*:nth-child(even){margin-top:0}
  .off-up,.off-down{margin-top:0}
}
@media (max-width:560px){
  .brand-subline{display:none}
  .header-top{gap:12px}
  .device-switch{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-base{justify-content:flex-start}
  .display{font-size:clamp(34px,11vw,48px)}
}

/* ---------- 14. 动效偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none}
}