/* =========================================================
   财神棋牌 · 共享站点样式 /assets/site.css
   蓝图网格 × 朱红鎏金 · 档案索引体系
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5,h6{font-weight:900}
:target{scroll-margin-top:140px}
[id]{scroll-margin-top:140px}

/* ---------- 2. 设计变量 ---------- */
:root{
  /* 品牌色 */
  --c-red:#B3261E;
  --c-red-deep:#7E1714;
  --c-red-ink:#5C0F0D;
  --c-gold:#D9A441;
  --c-gold-text:#7A4E0A;
  --c-gold-glow:#FFD36A;
  --c-green:#1F4D3F;
  --c-green-deep:#153830;
  --c-blue:#17324D;
  --c-blue-deep:#0F2338;
  --c-paper:#F6F1E7;
  --c-surface:#FFF9EF;
  --c-ink:#241A17;
  --c-ink-soft:#5B4A43;
  --c-line:#D8C7A8;
  --c-line-soft:rgba(216,199,168,.55);
  --c-cyan:#00A8A0;
  --c-violet:#6D4AA6;

  /* 字体 */
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  /* 字号阶梯 */
  --fs-12:12px;
  --fs-14:14px;
  --fs-16:16px;
  --fs-18:18px;
  --fs-24:24px;
  --fs-32:32px;
  --fs-44:44px;
  --fs-64:64px;

  /* 尺度 */
  --shell-max:1200px;
  --gutter:clamp(16px,4vw,40px);
  --radius:3px;
  --sh-1:0 1px 2px rgba(36,26,23,.05),0 12px 26px -20px rgba(36,26,23,.35);
  --sh-2:0 20px 44px -28px rgba(36,26,23,.55);
}

/* ---------- 3. 中文排版基线 ---------- */
body{
  background:var(--c-paper);
  color:var(--c-ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-wrap:break-word;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  line-height:1.18;
  letter-spacing:.02em;
  text-wrap:balance;
}
p{margin-bottom:1em}
strong{font-weight:700}
:where(a,button,input,select,textarea,[tabindex]):focus-visible{
  outline:2px solid var(--c-cyan);
  outline-offset:3px;
}

/* ---------- 4. 布局容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:clamp(48px,7vw,96px)}
.section--tight{padding-block:clamp(32px,4vw,56px)}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,24px);
}
@media (max-width:900px){
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr))}
}
@media (max-width:640px){
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-body);
  font-size:var(--fs-14);
  font-weight:600;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,box-shadow .22s ease,transform .22s ease;
}
.btn-primary{
  background:var(--c-red);
  color:#FFF6E8;
  border-color:var(--c-red-deep);
  box-shadow:0 12px 24px -16px rgba(179,38,30,.95),inset 0 1px 0 rgba(255,211,106,.28);
}
.btn-primary:hover{background:var(--c-red-deep);transform:translateY(-1px)}
.btn-gold{
  background:var(--c-gold);
  color:#3A2405;
  border-color:#B98429;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.4);
}
.btn-gold:hover{background:var(--c-gold-glow)}
.btn-ghost{
  background:transparent;
  color:var(--c-red);
  border-color:var(--c-line);
}
.btn-ghost:hover{border-color:var(--c-red);background:rgba(179,38,30,.06)}

/* ---------- 6. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  background:rgba(29,18,16,.86);
  color:#FFF6E8;
  border-bottom:1px solid rgba(217,164,65,.3);
  -webkit-backdrop-filter:blur(14px) saturate(1.15);
  backdrop-filter:blur(14px) saturate(1.15);
  transition:background-color .28s ease,color .28s ease,border-color .28s ease,box-shadow .28s ease;
}
.site-header[data-state="solid"]{
  background:var(--c-surface);
  color:var(--c-ink);
  border-bottom-color:var(--c-line);
  box-shadow:0 16px 34px -26px rgba(36,26,23,.7);
}
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:300;
  padding:10px 18px;
  background:var(--c-red);
  color:#FFF6E8;
  font-size:var(--fs-14);
  border-radius:2px;
  border:1px solid var(--c-gold);
  transition:top .2s ease;
}
.skip-link:focus{top:14px}

/* 顶部刻度条 */
.header-strip{
  border-bottom:1px solid rgba(255,246,232,.12);
  font-size:var(--fs-12);
}
.site-header[data-state="solid"] .header-strip{
  border-bottom-color:rgba(216,199,168,.6);
}
.strip-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:34px;
  padding-block:5px;
}
.brand-line{
  margin:0;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.14em;
  color:rgba(255,246,232,.68);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.site-header[data-state="solid"] .brand-line{color:rgba(36,26,23,.55)}
.utility-links{
  display:flex;
  align-items:center;
  gap:18px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:var(--fs-12);
  letter-spacing:.08em;
  flex:0 0 auto;
}
.utility-links a{
  color:rgba(255,246,232,.82);
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.utility-links a:hover{color:var(--c-gold-glow);border-bottom-color:var(--c-gold)}
.site-header[data-state="solid"] .utility-links a{color:var(--c-gold-text)}
.site-header[data-state="solid"] .utility-links a:hover{color:var(--c-red);border-bottom-color:var(--c-red)}

/* 主行 */
.header-main{position:relative}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(16px,3vw,40px);
  min-height:74px;
  padding-block:12px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  flex:0 0 auto;
  border-radius:4px;
  background:linear-gradient(150deg,#B3261E 0%,#7E1714 100%);
  border:1px solid rgba(217,164,65,.8);
  box-shadow:inset 0 0 0 1px rgba(255,211,106,.18),0 8px 16px -10px rgba(126,23,20,.95);
  color:var(--c-gold-glow);
  font-family:var(--font-display);
  font-weight:900;
  font-size:22px;
  line-height:1;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  letter-spacing:.08em;
}
.brand-tagline{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:rgba(255,246,232,.6);
  transition:color .28s ease;
}
.site-header[data-state="solid"] .brand-tagline{color:rgba(36,26,23,.45)}

/* 移动按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  min-height:44px;
  padding:9px 14px;
  background:transparent;
  border:1px solid rgba(217,164,65,.5);
  border-radius:2px;
  color:inherit;
  font-size:var(--fs-12);
  letter-spacing:.16em;
  cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--c-gold);background:rgba(217,164,65,.12)}
.site-header[data-state="solid"] .nav-toggle{border-color:var(--c-line)}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;
  height:12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background:currentColor;
  transition:transform .26s ease,top .26s ease,bottom .26s ease;
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{
  top:50%;
  transform:translateY(-50%) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{
  bottom:50%;
  transform:translateY(50%) rotate(-45deg);
}
.nav-toggle-label{white-space:nowrap}

/* 导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  margin-left:auto;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(4px,1.4vw,22px);
  margin:0;
  padding:0;
  list-style:none;
  flex-wrap:wrap;
}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:15px;
  font-weight:500;
  letter-spacing:.04em;
  color:inherit;
  opacity:.85;
  transition:opacity .2s ease,color .2s ease;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:1px;
  background:currentColor;
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .26s ease;
  opacity:.85;
}
.nav-list a:hover{opacity:1}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{
  opacity:1;
  color:var(--c-gold-glow);
}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}
.site-header[data-state="solid"] .nav-list a[aria-current="page"]{color:var(--c-red)}
.nav-cta{flex:0 0 auto;white-space:nowrap}

/* 阅读进度 */
.progress-bar{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-red) 0%,var(--c-gold) 55%,var(--c-gold-glow) 100%);
  pointer-events:none;
  transition:transform .1s linear;
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  isolation:isolate;
  margin-top:clamp(40px,6vw,80px);
  background:var(--c-green);
  color:#F1E8D8;
  border-top:1px solid rgba(217,164,65,.4);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.7;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:3px;
  z-index:-1;
  pointer-events:none;
  background:linear-gradient(90deg,var(--c-red) 0%,var(--c-gold) 30%,var(--c-gold-glow) 50%,var(--c-gold) 70%,var(--c-red) 100%);
  opacity:.75;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr .9fr .9fr 1.3fr;
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px);
}
.footer-brand{min-width:0}
.brand--footer{margin-bottom:18px}
.brand--footer .brand-mark{width:38px;height:38px;font-size:20px}
.footer-summary{
  max-width:34ch;
  margin:0 0 14px;
  font-size:15px;
  line-height:1.8;
  color:rgba(241,232,216,.8);
  overflow-wrap:anywhere;
}
.footer-note{
  display:inline-block;
  margin:0;
  padding:4px 10px;
  border:1px dashed rgba(217,164,65,.45);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.1em;
  color:rgba(217,164,65,.9);
}
.footer-col{min-width:0}
.footer-title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  font-weight:700;
  letter-spacing:.2em;
  color:var(--c-gold);
}
.footer-links{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  color:rgba(241,232,216,.86);
  transition:color .2s ease;
}
.footer-links a::before{
  content:"";
  width:6px;
  height:1px;
  background:var(--c-gold);
  opacity:.6;
  transition:width .2s ease,opacity .2s ease;
}
.footer-links a:hover{color:var(--c-gold-glow)}
.footer-links a:hover::before{width:16px;opacity:1}
.footer-contact .contact-line{
  display:grid;
  gap:1px;
  margin:0 0 12px;
  font-size:15px;
  line-height:1.6;
}
.contact-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:rgba(217,164,65,.85);
}
.contact-value{
  color:rgba(241,232,216,.9);
  overflow-wrap:anywhere;
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-block:22px;
  border-top:1px solid rgba(217,164,65,.28);
}
.footer-copy{
  margin:0;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.06em;
  color:rgba(241,232,216,.66);
}
.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:var(--fs-12);
  letter-spacing:.08em;
}
.footer-legal a{
  color:rgba(241,232,216,.78);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-legal a:hover{color:var(--c-gold-glow);border-bottom-color:var(--c-gold)}
.to-top{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:8px 16px;
  background:transparent;
  border:1px solid rgba(217,164,65,.45);
  border-radius:2px;
  color:var(--c-gold);
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.16em;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.to-top:hover{background:rgba(217,164,65,.14);color:var(--c-gold-glow);border-color:var(--c-gold)}

/* ---------- 8. 通用内容组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--c-gold-text);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:1px;
  background:currentColor;
  opacity:.7;
}
.section-title{
  margin:0 0 16px;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(28px,3.6vw,44px);
  line-height:1.16;
  letter-spacing:.02em;
  color:var(--c-ink);
}
.section-lede{
  max-width:42em;
  margin:0 0 24px;
  font-size:var(--fs-18);
  line-height:1.8;
  color:var(--c-ink-soft);
}
.prose{
  max-width:48em;
  font-size:var(--fs-16);
  line-height:1.85;
  color:var(--c-ink);
}
.prose p{margin-bottom:1.1em}
.prose a{color:var(--c-red);border-bottom:1px solid rgba(179,38,30,.35)}
.prose a:hover{color:var(--c-red-deep);border-bottom-color:var(--c-red-deep)}

.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.4vw,28px);
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  box-shadow:var(--sh-1);
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--sh-2);
  border-color:#C2AC85;
}
.card-index{
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.18em;
  color:var(--c-violet);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--c-line);
  border-radius:999px;
  background:rgba(217,164,65,.12);
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.1em;
  color:var(--c-gold-text);
  white-space:nowrap;
}
.tag--red{background:rgba(179,38,30,.08);border-color:rgba(179,38,30,.3);color:var(--c-red)}
.tag--cyan{background:rgba(0,168,160,.1);border-color:rgba(0,168,160,.35);color:#04726D}
.tag--violet{background:rgba(109,74,166,.1);border-color:rgba(109,74,166,.35);color:var(--c-violet)}
.stat{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(24px,3vw,34px);
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--c-red);
  font-variant-numeric:tabular-nums;
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.band{
  background:var(--c-blue);
  color:#E7EEF5;
  border-block:1px solid rgba(217,164,65,.35);
  padding-block:clamp(24px,3vw,40px);
}
.band .section-title,.band .eyebrow,.band .section-lede{color:#F3F7FB}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 24px;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.08em;
  color:var(--c-ink-soft);
}
.breadcrumb li+li::before{
  content:"/";
  margin-right:8px;
  color:var(--c-line);
}
.breadcrumb a{color:var(--c-gold-text)}
.breadcrumb a:hover{color:var(--c-red)}
.breadcrumb [aria-current="page"]{color:var(--c-ink)}

/* 图片容器基础规则（图片由页面阶段放入） */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 10;
  border:1px solid var(--c-line);
  border-radius:var(--radius);
  background:
    linear-gradient(135deg,rgba(179,38,30,.08),rgba(217,164,65,.12) 45%,rgba(23,50,77,.08));
  box-shadow:var(--sh-1);
}
.media-frame img,
.media-frame picture,
.media-frame svg{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-caption{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:var(--fs-12);
  letter-spacing:.08em;
  color:var(--c-ink-soft);
}

/* ---------- 9. 响应式 ---------- */
@media (max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:grid;
    gap:0;
    margin-left:0;
    max-height:0;
    overflow:hidden;
    opacity:0;
    visibility:hidden;
    padding:6px var(--gutter) 22px;
    background:var(--c-surface);
    color:var(--c-ink);
    border-bottom:1px solid var(--c-line);
    box-shadow:0 26px 44px -30px rgba(36,26,23,.8);
    transition:max-height .32s ease,opacity .24s ease,visibility .24s ease;
  }
  .site-nav[data-open]{
    max-height:min(78vh,540px);
    overflow-y:auto;
    opacity:1;
    visibility:visible;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
    margin-bottom:14px;
  }
  .nav-list li{border-bottom:1px solid rgba(216,199,168,.65)}
  .nav-list a{
    display:flex;
    align-items:center;
    min-height:52px;
    padding:12px 2px;
    font-size:var(--fs-16);
    opacity:1;
  }
  .nav-list a::after{display:none}
  .nav-list a[aria-current="page"]{color:var(--c-red);padding-left:12px}
  .nav-cta{width:100%}
  .header-inner{min-height:66px}
  .brand-name{font-size:18px}
}
@media (max-width:640px){
  body{font-size:16px}
  .brand-line{display:none}
  .strip-inner{justify-content:flex-end}
  .utility-links{gap:14px;margin-left:auto}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .to-top{align-self:stretch;justify-content:center}
  .section-lede{font-size:var(--fs-16)}
}

/* ---------- 10. 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .card:hover{transform:none}
  .btn-primary:hover{transform:none}
}