/* ===========================================================
   九五至尊3官网 · 共享外壳样式 /assets/site.css
   墨底黑 · 暗金 · 朱砂红 ｜ 框架式导航 ｜ 层叠目录结构
   =========================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#0E0E0C;
  --ink-2:#1B1A17;
  --rock:#2E2C27;
  --warm:#6F6A61;
  --paper:#F1ECE1;
  --paper-2:#D6CFBF;
  --gold:#A67C2E;
  --gold-bright:#E0B85C;
  --gold-deep:#6B4E1F;
  --cinnabar:#B33A2B;
  --cinnabar-soft:#E9A99A;

  --line-gold:rgba(166,124,46,.30);
  --line-gold-soft:rgba(166,124,46,.16);
  --line-paper:rgba(241,236,225,.14);

  --font-display:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --wrap:1200px;
  --wrap-wide:1340px;
  --gap:1.5rem;
  --head-h:64px;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
main{display:block}
h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,table{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse}
th,td{text-align:left}

:focus-visible{outline:2px solid var(--gold-bright);outline-offset:3px}
::selection{background:var(--gold);color:var(--ink)}

/* ---------- 3. 跳转链接 ---------- */
.skip-link{
  position:absolute;left:1rem;top:-5rem;z-index:200;
  padding:.6rem 1.1rem;
  background:var(--gold-bright);color:var(--ink);
  font-size:.85rem;font-weight:600;letter-spacing:.1em;
  border:1px solid var(--ink);
  transition:top .18s ease;
}
.skip-link:focus{top:.7rem}

/* ---------- 4. 头部：框架式顶梁 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(14,14,12,.94);
  border-bottom:1px solid var(--line-gold);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--gold-deep) 0%,var(--gold) 34%,var(--cinnabar) 74%,var(--gold-deep) 100%);
  opacity:.9;
}
.header-inner{
  width:min(var(--wrap-wide),100% - 2rem);
  margin-inline:auto;
  padding:.75rem 0;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.9rem 1.4rem;
  min-height:var(--head-h);
}
.header-id{
  display:flex;align-items:center;gap:1rem;
  flex:1 1 auto;min-width:0;
}
.brand{display:flex;align-items:center;gap:.7rem;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 auto;
  border:1px solid var(--gold);
  background:linear-gradient(158deg,rgba(166,124,46,.26),rgba(14,14,12,.15));
  color:var(--gold-bright);
  font-family:var(--font-display);
  font-weight:900;font-size:1.15rem;line-height:1;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-name{
  font-family:var(--font-display);font-weight:800;
  font-size:1.06rem;letter-spacing:.09em;color:var(--paper);
}
.brand-sub{
  font-size:.66rem;letter-spacing:.24em;color:var(--warm);
}
.header-status{
  display:flex;align-items:center;gap:.45rem;
  padding-left:1rem;
  border-left:1px solid var(--line-gold);
  font-size:.72rem;letter-spacing:.1em;color:var(--warm);
  white-space:nowrap;
}
.header-status .mono{color:var(--paper-2)}
.status-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--cinnabar);
  box-shadow:0 0 0 3px rgba(179,58,43,.18);
  flex:0 0 auto;
}
.status-sep{color:var(--gold-deep)}

/* 导航栅栏 */
.site-nav{flex:0 0 auto}
.nav-list{
  display:flex;flex-wrap:wrap;
  border:1px solid var(--line-gold);
  background:rgba(27,26,23,.6);
}
.nav-item{display:flex;border-left:1px solid var(--line-gold-soft)}
.nav-item:first-child{border-left:0}
.nav-link{
  position:relative;
  display:flex;align-items:baseline;gap:.42rem;
  padding:.6rem .95rem;
  color:var(--paper-2);
  font-size:.88rem;font-weight:500;letter-spacing:.08em;
  transition:color .18s ease,background-color .18s ease;
}
.nav-link::after{
  content:"";position:absolute;left:.95rem;right:.95rem;bottom:.32rem;height:1px;
  background:var(--gold);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--gold-bright);background:rgba(166,124,46,.08)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--gold-bright);background:rgba(166,124,46,.13)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);height:2px;background:var(--cinnabar)}
.nav-index{font-size:.66rem;letter-spacing:.1em;color:var(--warm)}
.nav-link[aria-current="page"] .nav-index{color:var(--gold-bright)}
.nav-note{display:none}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:.55rem;
  padding:.5rem .85rem;
  border:1px solid var(--line-gold);
  color:var(--paper-2);
  font-size:.78rem;letter-spacing:.16em;
}
.nav-toggle:hover{border-color:var(--gold-bright);color:var(--gold-bright)}
.nav-toggle-bars{
  position:relative;display:block;width:18px;height:2px;
  background:var(--gold-bright);
  transition:background-color .18s ease;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--gold-bright);
  transition:transform .2s ease;
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

/* 阅读进度 */
.read-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(241,236,225,.07);
  pointer-events:none;
}
.read-progress-bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-bright));
  transition:width .12s linear;
}

/* ---------- 5. 页脚：底册封底 ---------- */
.site-footer{
  position:relative;
  background:var(--ink);
  border-top:1px solid var(--line-gold);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;
  background:linear-gradient(90deg,var(--gold-deep),var(--gold) 40%,var(--gold-deep));
  opacity:.75;
}
.footer-inner{
  width:min(var(--wrap-wide),100% - 2rem);
  margin-inline:auto;
  padding:3rem 0 2rem;
}
.footer-top{
  display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2rem;
  padding-bottom:1.75rem;
  border-bottom:1px solid var(--line-gold-soft);
}
.footer-brand-line{
  font-family:var(--font-display);font-weight:800;
  font-size:1.15rem;letter-spacing:.08em;color:var(--paper);line-height:1.4;
}
.footer-brand-desc{
  margin-top:.6rem;max-width:34ch;
  font-size:.85rem;color:var(--warm);
}
.footer-group-title{
  margin-bottom:.75rem;
  font-size:.7rem;letter-spacing:.26em;color:var(--gold);
}
.footer-list li + li{margin-top:.45rem}
.footer-list a{
  display:inline-block;
  font-size:.88rem;color:var(--paper-2);
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-list a:hover{color:var(--gold-bright);border-bottom-color:var(--gold)}
.footer-contact{
  display:grid;gap:.5rem;
  padding:1.4rem 0;
  border-bottom:1px solid var(--line-gold-soft);
}
.footer-contact-line{
  font-size:.8rem;color:var(--paper-2);
  word-break:break-word;line-height:1.8;
}
.footer-note{font-size:.78rem;color:var(--warm);max-width:70ch}
.footer-base{
  display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;justify-content:space-between;align-items:baseline;
  padding-top:1.3rem;
  font-size:.75rem;color:var(--warm);
}
.footer-copy .mono{color:var(--paper-2)}
.footer-icp{letter-spacing:.1em}

/* ---------- 6. 通用容器与网格 ---------- */
.wrap{width:min(var(--wrap),100% - 2.4rem);margin-inline:auto}
.wrap--wide{width:min(var(--wrap-wide),100% - 2rem);margin-inline:auto}
.grid-12{
  display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap);
}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

/* ---------- 7. 文字组件 ---------- */
.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.04em}
.eyebrow{
  display:inline-block;margin-bottom:.6rem;
  font-size:.7rem;font-weight:500;letter-spacing:.28em;color:var(--gold);
}
.section-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.6rem,3.2vw,2.4rem);line-height:1.3;letter-spacing:.02em;
  color:var(--paper);
}
.lead{
  max-width:62ch;
  font-size:1.02rem;line-height:1.85;color:var(--paper-2);
}
.rule-line{
  height:1px;border:0;margin:1.6rem 0;
  background:linear-gradient(90deg,var(--line-gold),rgba(166,124,46,0));
}
.note{
  padding-left:.85rem;
  border-left:2px solid var(--gold-deep);
  font-size:.82rem;line-height:1.8;color:var(--warm);
}
.note-list li{
  position:relative;padding-left:1rem;
  font-size:.86rem;color:var(--paper-2);
}
.note-list li + li{margin-top:.45rem}
.note-list li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:5px;height:5px;background:var(--gold);transform:rotate(45deg);
}

/* ---------- 8. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.7rem 1.15rem;
  font-size:.88rem;font-weight:500;letter-spacing:.1em;
  color:var(--gold-bright);
  border:1px solid var(--gold);
  background:linear-gradient(180deg,rgba(166,124,46,.16),rgba(166,124,46,.04));
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{background:var(--gold);border-color:var(--gold-bright);color:var(--ink)}
.btn--gold{
  background:linear-gradient(180deg,var(--gold-bright),var(--gold));
  border-color:var(--gold-bright);color:var(--ink);font-weight:600;
}
.btn--gold:hover{filter:brightness(1.08);color:var(--ink)}
.btn--ghost{
  background:transparent;border-color:var(--line-paper);color:var(--paper-2);
}
.btn--ghost:hover{background:rgba(166,124,46,.1);border-color:var(--gold);color:var(--gold-bright)}
.btn--cinnabar{
  background:var(--cinnabar);border-color:var(--cinnabar);color:#F7EFE6;font-weight:600;
}
.btn--cinnabar:hover{filter:brightness(1.1);color:#F7EFE6}
.btn-row{display:flex;flex-wrap:wrap;gap:.7rem}

.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.2rem .55rem;
  font-size:.7rem;letter-spacing:.14em;
  color:var(--gold);
  border:1px solid rgba(166,124,46,.45);
  background:rgba(166,124,46,.09);
}
.tag--cinnabar{
  color:var(--cinnabar-soft);
  border-color:rgba(179,58,43,.55);
  background:rgba(179,58,43,.16);
}
.tag--paper{
  color:var(--paper-2);
  border-color:var(--line-paper);
  background:rgba(241,236,225,.05);
}

/* ---------- 9. 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.45rem;
  font-size:.75rem;letter-spacing:.12em;color:var(--warm);
}
.crumbs a{color:var(--paper-2);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.crumbs a:hover{color:var(--gold-bright);border-bottom-color:var(--gold)}
.crumb-sep{color:var(--gold-deep)}

/* ---------- 10. 面板与表格 ---------- */
.panel{
  background:var(--ink-2);
  border:1px solid var(--line-gold-soft);
  padding:1.4rem;
}
.panel-head{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:.6rem 1rem;
  padding-bottom:.7rem;margin-bottom:1rem;
  border-bottom:1px solid var(--line-gold-soft);
}
.table-wrap{
  overflow-x:auto;
  background:var(--ink-2);
  border:1px solid var(--line-gold-soft);
}
.data-table{width:100%;min-width:520px;font-size:.86rem}
.data-table th,
.data-table td{padding:.7rem .95rem;border-bottom:1px solid var(--line-gold-soft)}
.data-table thead th{
  font-size:.7rem;font-weight:500;letter-spacing:.18em;
  color:var(--gold);background:rgba(166,124,46,.08);
  white-space:nowrap;
}
.data-table tbody tr{transition:background-color .18s ease}
.data-table tbody tr:hover{background:rgba(166,124,46,.09)}
.data-table .mono{color:var(--paper-2)}
.data-table td:first-child{color:var(--paper)}

/* ---------- 11. 图片容器（页面阶段使用） ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  background:var(--ink-2);
  border:1px solid var(--line-gold-soft);
}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.9) contrast(1.04) brightness(.92);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(14,14,12,.1),rgba(14,14,12,.5));
}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--flat::after{background:none}
.media-caption{
  margin-top:.6rem;
  font-size:.76rem;letter-spacing:.04em;color:var(--warm);
}

/* ---------- 12. 滚动显现 ---------- */
.js-ready [data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .5s ease,transform .5s ease;
}
.js-ready [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 13. 响应式 ---------- */
@media (max-width:1100px){
  .nav-link{padding:.55rem .75rem;font-size:.84rem}
  .nav-link::after{left:.75rem;right:.75rem}
}
@media (max-width:900px){
  .header-inner{padding:.65rem 0;gap:.7rem}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;
    display:block;
    background:var(--ink-2);
    border-top:1px solid var(--line-gold);
    border-bottom:1px solid var(--line-gold);
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .3s ease,visibility .3s ease;
  }
  .site-nav[data-open]{
    max-height:min(78vh,560px);
    overflow-y:auto;
    visibility:visible;
  }
  .nav-list{flex-direction:column;flex-wrap:nowrap;border:0;background:transparent}
  .nav-item{border-left:0;border-top:1px solid var(--line-gold-soft)}
  .nav-item:first-child{border-top:0}
  .nav-link{padding:.85rem 1.15rem;font-size:.95rem;letter-spacing:.1em}
  .nav-link::after{left:1.15rem;right:1.15rem;bottom:.5rem}
  .nav-note{
    display:block;
    padding:.9rem 1.15rem 1.1rem;
    border-top:1px solid var(--line-gold-soft);
    font-size:.76rem;line-height:1.7;color:var(--warm);
  }
  .grid-12{grid-template-columns:repeat(6,1fr)}
  .col-3,.col-4,.col-5,.col-6{grid-column:span 3}
  .col-7,.col-8,.col-12{grid-column:span 6}
  .footer-top{grid-template-columns:1fr 1fr;gap:1.6rem}
}
@media (max-width:640px){
  .brand-sub{display:none}
  .header-status{display:none}
  .header-inner{width:calc(100% - 1.6rem)}
  .wrap,.wrap--wide,.footer-inner{width:calc(100% - 1.6rem)}
  .grid-12{grid-template-columns:1fr;gap:1.1rem}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 1}
  .panel{padding:1.1rem}
  .footer-top{grid-template-columns:1fr}
  .footer-base{justify-content:flex-start}
  .btn{width:100%;justify-content:center}
  .btn-row{flex-direction:column}
}
@media (max-width:380px){
  .brand-name{font-size:.98rem;letter-spacing:.06em}
}

/* ---------- 14. 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;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .nav-link::after{transition:none}
}