/* ============================================================
   鼎利娱乐会馆 · 共享样式表 /assets/site.css
   大厅（墨鼎黑）— 走廊（深棕黑）— 档案室（青铜绿）
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,details,summary{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,picture{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
summary{list-style:none}
summary::-webkit-details-marker{display:none}

/* ---------- 变量 ---------- */
:root{
  --ink:#0E1512;
  --ink-2:#1A1512;
  --bronze:#2E5C4E;
  --bronze-moss:#46785F;
  --copper:#C9924A;
  --copper-bright:#E8B96B;
  --neon:#FF3E7F;
  --cream:#F2E8D8;
  --stone:#8A8F87;
  --silver:#C9D1C7;

  --line:rgba(201,146,74,.30);
  --line-soft:rgba(201,146,74,.14);
  --line-cool:rgba(201,209,199,.14);
  --neon-line:rgba(255,62,127,.45);

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

  --wrap:1240px;
  --gutter:clamp(18px,4vw,48px);
  --gap:clamp(16px,2.4vw,28px);

  --fs-h1:clamp(30px,5.6vw,68px);
  --fs-h2:clamp(24px,3.4vw,42px);
  --fs-h3:clamp(18px,2vw,24px);
  --fs-h4:clamp(15px,1.4vw,18px);
  --fs-lead:clamp(17px,1.6vw,20px);
  --fs-body:16.5px;

  --t-fast:180ms;
  --t-mid:260ms;
}

/* ---------- 基础排版 ---------- */
body{
  background-color:var(--ink);
  background-image:
    radial-gradient(1200px 620px at 82% -12%,rgba(46,92,78,.38),transparent 72%),
    radial-gradient(900px 520px at -12% 18%,rgba(201,146,74,.10),transparent 70%);
  background-attachment:fixed;
  color:var(--silver);
  font-family:var(--font-sans);
  font-size:var(--fs-body);
  line-height:1.75;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5{
  color:var(--cream);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-0.02em;
  transform:scaleY(.94);
  transform-origin:50% 50%;
}
h1{font-size:var(--fs-h1);letter-spacing:-0.03em}
h2{font-size:var(--fs-h2)}
h3{font-size:var(--fs-h3)}
h4{font-size:var(--fs-h4);color:var(--copper-bright);font-weight:700;transform:none}
::selection{background:var(--copper);color:var(--ink)}
:focus-visible{outline:2px solid var(--copper-bright);outline-offset:2px}

/* ---------- 工具类 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--font-mono);letter-spacing:.06em}
.text-copper{color:var(--copper-bright)}
.text-neon{color:var(--neon)}
.text-cream{color:var(--cream)}
.text-stone{color:var(--stone)}
.hairline{height:1px;background:var(--line-soft);border:0;margin:0}
.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}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:12px;top:-64px;z-index:200;
  background:var(--copper);color:var(--ink);
  padding:10px 18px;font-size:14px;font-weight:700;letter-spacing:.02em;
  transition:top 160ms ease-out;
}
.skip-link:focus{top:12px}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:var(--ink);
  border-bottom:1px solid var(--line);
}
.header-upper{
  background:var(--ink);
  border-bottom:1px solid var(--line-soft);
}
.header-upper-inner{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:66px;padding-block:10px;
}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  flex:0 0 auto;
  display:inline-flex;align-items:center;justify-content:center;
  width:40px;height:40px;
  background:var(--bronze);
  border:1px solid var(--copper);
  color:var(--copper-bright);
  font-family:var(--font-mono);font-size:19px;letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{
  color:var(--cream);font-size:18px;font-weight:800;letter-spacing:-0.01em;
  line-height:1.25;transform:scaleY(.94);transform-origin:left center;
}
.brand-tagline{
  font-size:12px;color:var(--stone);letter-spacing:.04em;line-height:1.5;
}
.header-meta{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.version-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;
  border:1px solid var(--copper);
  background:rgba(46,92,78,.34);
}
.ver-num{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.10em;
  color:var(--copper-bright);white-space:nowrap;
}
.version-check{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--silver);
  border-bottom:1px dashed var(--copper);
  padding-bottom:2px;
  transition:color var(--t-fast),border-color var(--t-fast);
  white-space:nowrap;
}
.version-check:hover{color:var(--copper-bright);border-color:var(--copper-bright)}

.header-lower{background:var(--ink-2)}
.header-lower-inner{display:flex;align-items:stretch;gap:0;position:relative}
.floor-label{
  display:flex;align-items:center;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  color:var(--stone);
  padding:0 18px 0 0;margin-right:18px;
  border-right:1px solid var(--line-soft);
  white-space:nowrap;
}
.site-nav{min-width:0}
.nav-list{display:flex;flex-wrap:wrap;align-items:stretch;counter-reset:floor}
.nav-item{counter-increment:floor;display:flex}
.nav-link{
  display:flex;align-items:center;
  padding:15px 18px;
  font-size:15px;letter-spacing:.02em;
  color:var(--silver);
  border-right:1px solid var(--line-soft);
  transition:background var(--t-fast),color var(--t-fast);
}
.nav-link::before{
  content:counter(floor,decimal-leading-zero);
  font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;
  opacity:.6;margin-right:9px;
}
.nav-link:hover{color:var(--copper-bright);background:rgba(201,146,74,.08)}
.nav-link[aria-current="page"]{
  background:var(--copper);color:var(--ink);font-weight:700;
  border-right-color:var(--copper);
}
.nav-link[aria-current="page"]::before{opacity:.75}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 13px;
  border:1px solid var(--copper);
  color:var(--copper-bright);
  font-size:13px;letter-spacing:.06em;
}
.nav-toggle-bars{
  position:relative;display:block;width:18px;height:2px;
  background:var(--copper-bright);
  transition:background var(--t-fast);
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--copper-bright);
  transition:transform var(--t-mid),opacity var(--t-mid);
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.site-header[data-open] .nav-toggle-bars{background:transparent}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

.nav-toggle:hover{border-color:var(--copper-bright);background:rgba(201,146,74,.10)}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--ink-2);
  border-top:1px solid var(--line);
  color:var(--silver);
  position:relative;
}
.footer-inner{padding-top:clamp(38px,6vw,72px)}
.footer-grid{
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.3fr;
  gap:clamp(24px,3.4vw,44px);
  padding-bottom:clamp(28px,4vw,46px);
}
.footer-col--brand{border-left:1px solid var(--line-soft);padding-left:clamp(14px,1.6vw,22px)}
.footer-brand{
  color:var(--cream);font-size:20px;font-weight:800;letter-spacing:-0.01em;
  padding-bottom:10px;margin-bottom:12px;
  border-bottom:1px solid var(--line-soft);
  transform:scaleY(.94);transform-origin:left center;
}
.footer-note{font-size:14px;line-height:1.8;color:var(--stone)}
.footer-note--mono{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--copper);margin-top:12px;
}
.footer-title{
  font-family:var(--font-mono);font-size:12px;font-weight:400;
  letter-spacing:.16em;color:var(--copper-bright);
  margin-bottom:16px;transform:none;
}
.footer-title::before{content:"— ";color:var(--copper)}
.footer-list li+li{margin-top:9px}
.footer-link{
  font-size:14px;color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color var(--t-fast),border-color var(--t-fast);
}
.footer-link:hover{color:var(--copper-bright);border-bottom-color:var(--copper)}
.footer-list--contact .footer-line{
  display:grid;grid-template-columns:74px minmax(0,1fr);gap:10px;
  align-items:start;font-size:13px;line-height:1.75;
}
.footer-list--contact li+li{margin-top:12px}
.footer-key{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--stone);padding-top:3px;
}
.footer-val{color:var(--silver);word-break:break-word}

.footer-fold{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:rgba(14,21,18,.55);
  perspective:900px;
}
.fold-summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 2px;cursor:pointer;
  font-size:14px;letter-spacing:.04em;
  transition:color var(--t-fast);
}
.fold-summary:hover .fold-title{color:var(--copper-bright)}
.fold-title{color:var(--cream);font-weight:700}
.fold-mark{
  font-family:var(--font-mono);font-size:12px;color:var(--copper);
  transition:transform var(--t-mid),color var(--t-fast);
}
.footer-fold[open] .fold-mark{transform:rotate(180deg);color:var(--neon)}
.fold-body{
  padding:2px 2px 24px;
  transform-origin:top center;
  animation:foldOpen 280ms ease-out both;
}
@keyframes foldOpen{
  from{opacity:0;transform:rotateX(-14deg) translateY(-6px)}
  to{opacity:1;transform:rotateX(0) translateY(0)}
}
.fold-row{
  display:grid;grid-template-columns:132px minmax(0,1fr);gap:14px;
  padding:11px 0;
  border-top:1px dashed var(--line-soft);
  font-size:13px;line-height:1.75;
}
.fold-key{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.10em;
  color:var(--copper);padding-top:3px;
}
.fold-val{color:var(--silver)}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:16px 0 22px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--stone);
}
.footer-legal{color:var(--copper)}

/* ---------- 分节与展览标签 ---------- */
.section{padding-block:clamp(38px,6.4vw,84px);border-top:1px solid var(--line-soft)}
.section:first-of-type{border-top:0}
.section-head{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-bottom:clamp(20px,2.6vw,32px);
}
.section-title{font-size:var(--fs-h2)}
.placard{
  display:inline-flex;align-items:center;gap:9px;
  padding:5px 12px;
  border:1px solid var(--copper);
  background:rgba(46,92,78,.30);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  color:var(--copper-bright);white-space:nowrap;
}
.placard-num{color:var(--neon)}
.lede{
  font-size:var(--fs-lead);line-height:1.72;color:var(--cream);
  max-width:56ch;
}
.prose{max-width:68ch;font-size:var(--fs-body);line-height:1.78;color:var(--silver)}
.prose p+p{margin-top:1em}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.5em}
.prose a{color:var(--copper-bright);border-bottom:1px solid var(--copper)}
.prose a:hover{border-bottom-color:var(--copper-bright)}

/* ---------- 网格与卡片 ---------- */
.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))}
.card{
  position:relative;
  background:var(--bronze);
  border:1px solid var(--line);
  padding:clamp(18px,2.4vw,28px);
  transition:border-color var(--t-fast),background var(--t-fast);
}
.card:hover{border-color:var(--copper)}
.card--moss{background:var(--bronze-moss)}
.card--ink{background:var(--ink-2)}
.card--cream{background:var(--cream);border-color:var(--copper);color:var(--ink)}
.card--offset{margin-top:clamp(0px,2vw,26px)}
.card-meta{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--copper-bright);margin-bottom:10px;
}
.card--cream .card-meta{color:#8A5A1E}
.card-title{font-size:var(--fs-h3);margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.78;color:var(--silver)}
.card--cream p{color:#3A3229}
.card--cream .card-title{color:#1A1512}
.tag{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.10em;
  color:var(--copper-bright);
}
.tag--neon{border-color:var(--neon);color:var(--neon)}

/* ---------- 图片容器 ---------- */
.figure{
  position:relative;margin:0;
  background:var(--ink-2);
  border:1px solid var(--line-soft);
  overflow:hidden;
}
.figure img{width:100%;height:100%;object-fit:cover}
.figure--wide{grid-column:span 2}
.figure--tall{aspect-ratio:3/4}
.figure--empty,
.media-frame--empty{
  background-image:
    repeating-linear-gradient(45deg,rgba(201,146,74,.12) 0 1px,transparent 1px 14px),
    linear-gradient(160deg,var(--bronze) 0%,var(--ink) 78%);
}
.figure--empty{min-height:220px}
.figure-cap{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  color:var(--stone);
  padding:10px 12px;border-top:1px solid var(--line-soft);
}
.media-frame{
  position:relative;
  aspect-ratio:16/9;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(140deg,var(--bronze) 0%,var(--ink) 76%);
}
.media-frame img{width:100%;height:100%;object-fit:cover}

/* ---------- 抽屉（趣味入口） ---------- */
.drawer{
  background:var(--ink-2);
  border:1px solid var(--neon-line);
}
.drawer-front{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;cursor:pointer;
  background:linear-gradient(180deg,rgba(255,62,127,.16),rgba(14,21,18,.92));
  border-bottom:1px solid var(--neon-line);
  transition:background var(--t-fast);
}
.drawer-front:hover{background:linear-gradient(180deg,rgba(255,62,127,.24),rgba(14,21,18,.92))}
.drawer-front .card-title{margin-bottom:0}
.drawer-body{
  padding:20px;
  transform-origin:top center;
  animation:drawerPull var(--t-mid) cubic-bezier(.22,.75,.3,1) both;
}
@keyframes drawerPull{
  from{opacity:0;clip-path:inset(0 0 100% 0);transform:translateY(-8px)}
  to{opacity:1;clip-path:inset(0 0 0 0);transform:translateY(0)}
}
.breathe{animation:breathe 2.8s ease-in-out infinite}
@keyframes breathe{
  0%,100%{box-shadow:0 0 0 0 rgba(255,62,127,.26)}
  50%{box-shadow:0 0 22px 4px rgba(255,62,127,.44)}
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 20px;
  border:1px solid var(--copper);
  background:transparent;
  color:var(--cream);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:background var(--t-fast),color var(--t-fast),border-color var(--t-fast),box-shadow var(--t-fast);
}
.btn:hover{background:var(--copper);color:var(--ink)}
.btn-primary{background:var(--copper);color:var(--ink);border-color:var(--copper)}
.btn-primary:hover{background:var(--copper-bright);border-color:var(--copper-bright);color:var(--ink)}
.btn-ghost{border-color:var(--line);color:var(--silver)}
.btn-ghost:hover{background:rgba(201,146,74,.12);color:var(--cream)}
.btn-neon{
  border-color:var(--neon);
  background:rgba(255,62,127,.12);
  color:var(--cream);
}
.btn-neon:hover{background:var(--neon);color:#140F0D;border-color:var(--neon)}

/* ---------- 面包屑 ---------- */
.crumbs{
  padding-block:16px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--stone);
}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.crumbs li{display:inline-flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--copper);opacity:.6}
.crumbs a{color:var(--silver);transition:color var(--t-fast)}
.crumbs a:hover{color:var(--copper-bright)}
.crumbs [aria-current="page"]{color:var(--copper)}

/* ---------- 滚动显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity 320ms ease-out,transform 320ms ease-out;
  transition-delay:var(--reveal-delay,0ms);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- JS 注入：进度条与回到顶部 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;z-index:90;
  width:var(--progress,0%);height:3px;
  background:linear-gradient(90deg,var(--copper),var(--copper-bright) 55%,var(--neon));
  pointer-events:none;
  transition:width 120ms linear;
}
.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 14px;
  border:1px solid var(--copper);
  background:rgba(26,21,18,.94);
  color:var(--copper-bright);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  opacity:0;visibility:hidden;
  transition:opacity 200ms ease-out,visibility 200ms,background var(--t-fast),color var(--t-fast);
}
.to-top.is-on{opacity:1;visibility:visible}
.to-top:hover{background:var(--copper);color:var(--ink)}

/* ---------- 响应式：平板 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--brand{border-left:0;padding-left:0}
}
@media (max-width:960px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 响应式：移动导航 ---------- */
@media (max-width:880px){
  .header-lower-inner{flex-wrap:wrap;align-items:center;justify-content:space-between;padding-block:9px}
  .floor-label{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;
    flex:1 0 100%;width:100%;
    margin-top:10px;
    border-top:1px solid var(--line-soft);
  }
  .site-header[data-open] .site-nav{display:block;animation:navIn 220ms ease-out both}
  @keyframes navIn{
    from{opacity:0;transform:translateY(-6px)}
    to{opacity:1;transform:translateY(0)}
  }
  .nav-list{flex-direction:column;align-items:stretch}
  .nav-item{display:block}
  .nav-link{
    padding:15px 6px;
    border-right:0;
    border-bottom:1px solid var(--line-soft);
    justify-content:flex-start;
  }
  .nav-link[aria-current="page"]{border-bottom-color:var(--copper)}
  .section-head{gap:10px}
}

/* ---------- 响应式：手机 ---------- */
@media (max-width:700px){
  .grid-2,.grid-3{grid-template-columns:minmax(0,1fr)}
  .figure--wide{grid-column:auto}
  .fold-row{grid-template-columns:minmax(0,1fr);gap:4px}
  .fold-key{padding-top:0}
  .footer-list--contact .footer-line{grid-template-columns:minmax(0,1fr);gap:2px}
  .footer-key{padding-top:0}
}
@media (max-width:640px){
  .brand-tagline{display:none}
  .header-upper-inner{min-height:60px;gap:12px}
  .brand-mark{width:36px;height:36px;font-size:17px}
  .brand-name{font-size:16px}
  .header-meta{gap:10px}
  .version-badge{padding:4px 8px}
  .ver-num{font-size:10px}
  .version-check{font-size:12px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .to-top{padding:9px 12px}
}

/* ---------- 可访问性：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}
  .breathe{animation:none;box-shadow:0 0 0 1px rgba(255,62,127,.5)}
  .scroll-progress{transition:none}
}