/* ===================================================================
   问鼎娱乐会馆 · 共享站点样式 /assets/site.css
   暗夜会馆 × 数字档案库 · 技术蓝图网格 · 鎏金 / 朱砂 / 冷灰蓝
   =================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{background:none;border:0;color:inherit;font:inherit;}
:focus-visible{outline:2px solid #E3C77A;outline-offset:3px;}

/* ---------- 2. Tokens ---------- */
:root{
  --ink:#071A16;
  --ink-2:#0C2720;
  --ink-3:#12382E;
  --gold:#C9A24B;
  --gold-lit:#E3C77A;
  --seal:#B33A2B;
  --seal-warm:#D65A45;
  --steel:#7E98A6;
  --mist:#D8E2E6;
  --paper:#F2EBDD;
  --line:rgba(201,162,75,.30);
  --line-soft:rgba(126,152,166,.20);
  --line-faint:rgba(126,152,166,.10);
  --shadow:0 22px 54px rgba(0,0,0,.48);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,"Courier New",monospace;
  --shell:1240px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --radius:3px;
}

/* ---------- 3. Base & 中文排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  color:var(--mist);
  background-color:var(--ink);
  background-image:
    linear-gradient(to right, rgba(126,152,166,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(126,152,166,.05) 1px, transparent 1px),
    radial-gradient(1200px 760px at 8% -12%, rgba(18,56,46,.92), transparent 62%),
    radial-gradient(900px 640px at 102% -4%, rgba(179,58,43,.14), transparent 58%);
  background-size:86px 86px,86px 86px,100% 100%,100% 100%;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.18;color:var(--paper);letter-spacing:-.005em;}
p{font-size:16.5px;line-height:1.85;}
::selection{background:rgba(201,162,75,.32);color:var(--paper);}
#main-content{scroll-margin-top:120px;}
#main-content:focus{outline:none;}

/* ---------- 4. 布局容器 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(16px,4vw,32px);}
.shell--narrow{max-width:860px;}
.site-main{padding-top:clamp(94px,13vh,132px);position:relative;}
.section{padding-block:clamp(44px,7vw,88px);}
.section--tight{padding-block:clamp(26px,4vw,48px);}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,24px);}
@media (max-width:820px){.grid-12{grid-template-columns:repeat(6,minmax(0,1fr));}}
@media (max-width:540px){.grid-12{grid-template-columns:repeat(2,minmax(0,1fr));}}
.rule{height:1px;border:0;background:var(--line);margin:0;}

/* ---------- 5. 文字组件 ---------- */
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.28em;
  text-transform:uppercase;color:var(--gold);
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--gold);flex:0 0 auto;}
.section-title{font-size:clamp(28px,3.6vw,44px);line-height:1.14;color:var(--paper);}
.lede{font-size:clamp(16px,1.5vw,18px);line-height:1.82;color:var(--mist);max-width:62ch;}
.mono{font-family:var(--mono);letter-spacing:.08em;}
.prose{max-width:68ch;color:var(--mist);}
.prose p{font-size:16.5px;line-height:1.85;margin:0 0 1.1em;}
.prose h2{font-size:clamp(24px,2.6vw,32px);margin:1.6em 0 .6em;}
.prose h3{font-size:clamp(19px,2vw,23px);margin:1.4em 0 .5em;color:var(--gold-lit);}
.prose ul,.prose ol{list-style:disc;padding-left:1.3em;margin:0 0 1.1em;}
.prose ol{list-style:decimal;}
.prose li{margin-bottom:.45em;line-height:1.8;}
.prose a{color:var(--gold-lit);border-bottom:1px solid var(--line);}
.prose a:hover{border-bottom-color:var(--gold);}
.prose strong{color:var(--paper);}

/* ---------- 6. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border-radius:var(--radius);border:1px solid transparent;
  font-family:var(--sans);font-size:15px;font-weight:600;letter-spacing:.04em;
  cursor:pointer;transition:transform .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--gold{background:var(--gold);color:#0A1F19;border-color:var(--gold-lit);}
.btn--gold:hover{background:var(--gold-lit);transform:translateY(-1px);}
.btn--ghost{background:transparent;color:var(--gold-lit);border-color:var(--line);}
.btn--ghost:hover{background:rgba(201,162,75,.12);border-color:var(--gold);}
.btn--seal{background:var(--seal);color:var(--paper);border-color:var(--seal-warm);}
.btn--seal:hover{background:var(--seal-warm);}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:2px;
  border:1px solid var(--line);background:rgba(201,162,75,.08);
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--gold-lit);
}
.tag--seal{background:var(--seal);border-color:rgba(242,235,221,.32);color:var(--paper);}
.tag--steel{background:rgba(126,152,166,.08);border-color:var(--line-soft);color:var(--steel);}

/* ---------- 7. 面包屑 ---------- */
.breadcrumbs{margin:0 0 clamp(18px,3vw,30px);}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--steel);}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs li+li::before{content:"/";color:rgba(126,152,166,.45);}
.breadcrumbs a{color:var(--steel);border-bottom:1px solid transparent;transition:color .16s,border-color .16s;}
.breadcrumbs a:hover{color:var(--gold-lit);border-bottom-color:var(--line);}
.breadcrumbs [aria-current="page"]{color:var(--gold);}

/* ---------- 8. 档案卡 / 面板 ---------- */
.card,.panel{
  position:relative;border-radius:var(--radius);
  border:1px solid var(--line-soft);
  background:linear-gradient(162deg,rgba(18,56,46,.92),rgba(12,39,32,.86) 58%,rgba(7,26,22,.92));
  padding:clamp(18px,2.4vw,26px);
}
.panel{padding:clamp(18px,2.6vw,30px);}
.card::before{
  content:"";position:absolute;top:-1px;left:-1px;width:18px;height:18px;
  border-top:1px solid var(--gold);border-left:1px solid var(--gold);
  opacity:.8;pointer-events:none;
}
.card::after{
  content:"";position:absolute;right:-1px;bottom:-1px;width:18px;height:18px;
  border-bottom:1px solid var(--line);border-right:1px solid var(--line);
  pointer-events:none;
}
.panel-label{
  display:block;margin:0 0 10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--gold);
}

/* ---------- 9. 图片容器基础规则 ---------- */
.fig-frame{
  position:relative;display:block;width:100%;overflow:hidden;
  border:1px solid var(--line-soft);border-radius:var(--radius);
  background:
    radial-gradient(120% 100% at 18% 0%,rgba(18,56,46,.96),rgba(7,26,22,.98) 72%),
    var(--ink-3);
}
.fig-frame::after{
  content:"";position:absolute;inset:8px;pointer-events:none;
  border:1px solid rgba(201,162,75,.18);
}
.fig-frame img{width:100%;height:100%;object-fit:cover;display:block;filter:saturate(.94) contrast(1.05) brightness(.94);}
.fig-frame--wide{aspect-ratio:16/9;}
.fig-frame--tall{aspect-ratio:3/4;}
.fig-frame--square{aspect-ratio:1/1;}
.fig-cap{margin-top:8px;font-family:var(--mono);font-size:11.5px;letter-spacing:.14em;color:var(--steel);}

/* ---------- 10. 数据表 / 索引 / 统计 ---------- */
.table-scroll{width:100%;overflow-x:auto;border:1px solid var(--line-soft);border-radius:var(--radius);}
.data-table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:520px;}
.data-table caption{caption-side:top;text-align:left;padding:12px 14px 10px;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--steel);}
.data-table th{
  text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);
  font-family:var(--mono);font-size:11px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gold);white-space:nowrap;
}
.data-table td{padding:12px 14px;border-bottom:1px solid var(--line-soft);color:var(--mist);vertical-align:top;}
.data-table tbody tr:last-child td{border-bottom:0;}
.data-table tbody tr:hover td{background:rgba(201,162,75,.05);}
.index-list{display:grid;gap:0;}
.index-item{
  display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:baseline;
  padding:14px 6px;border-bottom:1px solid var(--line-soft);
  transition:background-color .16s var(--ease),padding-left .16s var(--ease);
}
.index-item:hover{background:rgba(201,162,75,.05);padding-left:12px;}
.stat{display:flex;flex-direction:column;gap:6px;}
.stat-num{font-family:var(--serif);font-weight:700;font-size:clamp(48px,9vw,120px);line-height:.9;letter-spacing:-.03em;color:var(--gold);}
.stat-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--steel);}

/* ---------- 11. 跳过链接 ---------- */
.skip-link{
  position:fixed;top:-90px;left:50%;transform:translateX(-50%);z-index:200;
  padding:11px 22px;border-radius:0 0 4px 4px;
  background:var(--gold);color:#08170F;font-weight:700;font-size:14px;letter-spacing:.06em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0;}

/* ---------- 12. 悬浮胶囊导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  padding:14px clamp(10px,3vw,26px) 0;
  pointer-events:none;
}
.header-rail{max-width:var(--shell);margin-inline:auto;pointer-events:auto;}
.header-capsule{
  position:relative;display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  padding:9px 14px 9px 16px;border-radius:999px;
  border:1px solid var(--line);
  background:linear-gradient(118deg,rgba(12,39,32,.95),rgba(7,26,22,.93));
  box-shadow:var(--shadow);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:padding .26s var(--ease),border-color .26s var(--ease),background-color .26s var(--ease);
}
.site-header[data-scrolled="true"] .header-capsule{
  padding:5px 12px 5px 14px;
  border-color:rgba(201,162,75,.48);
  background:linear-gradient(118deg,rgba(12,39,32,.98),rgba(7,26,22,.97));
}

/* 品牌 */
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;color:var(--paper);}
.brand-seal{
  width:38px;height:38px;flex:0 0 auto;display:grid;place-items:center;
  border-radius:2px;background:var(--seal);
  box-shadow:inset 0 0 0 1px rgba(242,235,221,.34),0 6px 16px rgba(179,58,43,.28);
  font-family:var(--serif);font-weight:700;font-size:19px;color:var(--paper);line-height:1;
  transition:width .26s var(--ease),height .26s var(--ease);
}
.site-header[data-scrolled="true"] .brand-seal{width:32px;height:32px;font-size:17px;}
.brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.12;}
.brand-name{font-family:var(--serif);font-weight:700;font-size:17px;letter-spacing:.07em;color:var(--paper);white-space:nowrap;}
.brand-descriptor{font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--steel);white-space:nowrap;}

/* 导航 */
.primary-nav{display:flex;align-items:center;gap:clamp(6px,1.3vw,16px);margin-left:auto;}
.nav-list{display:flex;align-items:center;gap:2px;}
.nav-item{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;gap:7px;white-space:nowrap;
  padding:8px 11px;border-radius:999px;border:1px solid transparent;
  font-size:14.5px;letter-spacing:.02em;color:var(--mist);
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link::before{
  content:attr(data-idx);
  font-family:var(--mono);font-size:10px;letter-spacing:.06em;
  color:var(--gold);opacity:.6;transition:opacity .18s,color .18s;
}
.nav-link:hover{color:var(--gold-lit);background:rgba(201,162,75,.10);border-color:var(--line);}
.nav-link:hover::before{opacity:1;}
.nav-link[aria-current="page"]{
  color:var(--gold-lit);background:rgba(201,162,75,.15);border-color:rgba(201,162,75,.52);
}
.nav-link[aria-current="page"]::before{opacity:1;color:var(--seal-warm);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;white-space:nowrap;
  padding:10px 20px;border-radius:999px;
  background:var(--gold);color:#0A1F19;border:1px solid var(--gold-lit);
  font-size:14px;font-weight:700;letter-spacing:.05em;
  transition:background-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.nav-cta:hover{background:var(--gold-lit);transform:translateY(-1px);box-shadow:0 8px 20px rgba(201,162,75,.24);}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:8px 14px;border-radius:999px;border:1px solid var(--line);
  background:rgba(201,162,75,.10);color:var(--gold-lit);cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(201,162,75,.18);border-color:var(--gold);}
.nav-toggle-ico{display:grid;gap:4px;width:16px;flex:0 0 auto;}
.nav-toggle-ico span{display:block;height:1.5px;background:currentColor;border-radius:2px;transition:transform .24s var(--ease),opacity .18s var(--ease);}
.nav-toggle-text{font-family:var(--mono);font-size:11.5px;letter-spacing:.18em;}
.site-header[data-open="true"] .nav-toggle-ico span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.site-header[data-open="true"] .nav-toggle-ico span:nth-child(2){opacity:0;}
.site-header[data-open="true"] .nav-toggle-ico span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}
.site-header[data-open="true"] .nav-toggle{background:rgba(179,58,43,.24);border-color:rgba(214,90,69,.6);color:var(--paper);}

/* 顶部进度线 */
.scroll-progress{
  position:fixed;top:0;left:0;width:100%;height:2px;z-index:90;
  transform:scaleX(var(--progress,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--seal-warm) 0%,var(--gold) 52%,var(--steel) 100%);
  pointer-events:none;
}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(56px,9vw,104px);
  padding-top:clamp(46px,7vw,84px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(12,39,32,.98),rgba(7,26,22,1) 62%);
  color:var(--mist);overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(to right,rgba(126,152,166,.11) 1px,transparent 1px);
  background-size:calc(100% / 6) 100%;
  opacity:.65;
}
.site-footer::after{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(201,162,75,.55),transparent);
  pointer-events:none;
}
.footer-inner{position:relative;z-index:1;max-width:var(--shell);margin-inline:auto;padding-inline:clamp(16px,4vw,32px);}
.footer-grid{
  display:grid;grid-template-columns:1.55fr 1fr 1fr 1.2fr;
  gap:clamp(26px,4vw,56px);
  padding-bottom:clamp(34px,5vw,60px);
}
.footer-brand{display:flex;flex-direction:column;gap:14px;max-width:38ch;}
.footer-seal{
  width:44px;height:44px;display:grid;place-items:center;border-radius:2px;
  background:var(--seal);color:var(--paper);
  font-family:var(--serif);font-weight:700;font-size:22px;line-height:1;
  box-shadow:inset 0 0 0 1px rgba(242,235,221,.34);
}
.footer-brand-name{font-family:var(--serif);font-weight:700;font-size:clamp(22px,2.4vw,27px);letter-spacing:.08em;color:var(--paper);}
.footer-summary{font-size:14.8px;line-height:1.85;color:var(--mist);max-width:42ch;}
.footer-tagline{font-family:var(--mono);font-size:11px;letter-spacing:.24em;text-transform:uppercase;color:var(--steel);}
.footer-col{display:flex;flex-direction:column;}
.footer-col-title{
  margin:0 0 14px;padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--serif);font-weight:600;font-size:15px;letter-spacing:.16em;color:var(--gold);
}
.footer-list{display:grid;gap:9px;}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;
  font-size:14.5px;color:var(--mist);
  transition:color .16s var(--ease),transform .16s var(--ease);
}
.footer-link::before{content:"";width:10px;height:1px;background:var(--gold);opacity:.55;flex:0 0 auto;transition:width .16s var(--ease),opacity .16s var(--ease);}
.footer-link:hover{color:var(--gold-lit);transform:translateX(3px);}
.footer-link:hover::before{width:16px;opacity:1;}
.footer-link--plain::before{display:none;}
.footer-contact-line{font-size:14px;line-height:1.7;color:var(--mist);word-break:break-word;}
.footer-note{margin-top:14px;font-family:var(--mono);font-size:11.5px;line-height:1.8;color:var(--steel);max-width:34ch;}
.footer-legal{position:relative;z-index:1;border-top:1px solid var(--line-faint);background:rgba(7,26,22,.72);}
.footer-legal-inner{
  max-width:var(--shell);margin-inline:auto;
  padding:16px clamp(16px,4vw,32px) 20px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--steel);
}
.footer-copy,.footer-icp{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--steel);}
.footer-legal-links{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;}
.footer-legal-links .footer-link{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--steel);}
.footer-legal-links .footer-link:hover{color:var(--gold-lit);}

/* ---------- 14. 滚动显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
  will-change:opacity,transform;
}
[data-reveal].is-revealed{opacity:1;transform:none;}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1180px){
  .nav-link{padding:8px 9px;font-size:14px;}
  .nav-cta{padding:9px 16px;font-size:13.5px;}
}
@media (max-width:1000px){
  .footer-grid{grid-template-columns:1fr 1fr;}
  .footer-brand{grid-column:1 / -1;max-width:52ch;}
}
@media (max-width:900px){
  .site-header{padding:10px clamp(10px,3vw,18px) 0;}
  .header-capsule{gap:10px;padding:8px 10px 8px 12px;flex-wrap:nowrap;}
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    position:absolute;top:calc(100% + 10px);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;margin-left:0;
    padding:12px;border-radius:14px;border:1px solid var(--line);
    background:linear-gradient(162deg,rgba(12,39,32,.99),rgba(7,26,22,.99));
    box-shadow:var(--shadow);
    max-height:min(72vh,540px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
  }
  .site-header[data-open="true"] .primary-nav{opacity:1;visibility:visible;transform:none;}
  .nav-list{flex-direction:column;align-items:stretch;gap:2px;}
  .nav-item{width:100%;}
  .nav-link{
    width:100%;justify-content:flex-start;border-radius:6px;
    padding:12px 12px;font-size:15.5px;
    border-bottom:1px solid var(--line-faint);
  }
  .nav-link:hover,.nav-link[aria-current="page"]{border-radius:6px;}
  .nav-cta{margin-top:12px;padding:13px 18px;font-size:14.5px;width:100%;}
}
@media (max-width:620px){
  .brand-descriptor{display:none;}
  .brand-name{font-size:15.5px;}
  .brand-seal{width:32px;height:32px;font-size:17px;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-brand{max-width:none;}
  .footer-legal-inner{justify-content:flex-start;}
  .nav-toggle-text{display:none;}
  .nav-toggle{padding:8px 12px;}
  p{font-size:16px;}
}
@media (max-width:400px){
  .brand-name{font-size:14.5px;letter-spacing:.03em;}
}

/* ---------- 16. 动效降级 ---------- */
@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 !important;transform:none !important;}
  .scroll-progress{transition:none !important;}
  .nav-link:hover,.footer-link:hover,.btn:hover,.nav-cta:hover{transform:none !important;}
}