/* ==========================================================================
   博亚娱乐 · 共享样式表 /assets/site.css
   设计语言：技术蓝图网格 + 编辑部刊物 + 2009 数字美学
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}

/* ---------- 2. 令牌 ---------- */
:root{
  --ink-900:#071A16;
  --ink-800:#0B2B24;
  --ink-700:#14453A;
  --gold:#C8A44A;
  --gold-light:#E8CE86;
  --gold-line:rgba(200,164,74,.35);
  --gold-line-strong:rgba(200,164,74,.62);
  --wine:#7A2230;
  --table-a:#123A5C;
  --table-b:#1E5F8A;
  --cream:#F4F1E8;
  --paper:#D9D6CB;
  --muted:#9DB3AB;
  --radius-lg:28px;
  --radius-md:20px;
  --radius-sm:12px;
  --radius-pill:999px;
  --content-max:1240px;
  --gutter:clamp(16px,4vw,44px);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Inter","Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-800);
  background-image:
    radial-gradient(120% 80% at 10% -10%, rgba(18,58,92,.40), transparent 62%),
    radial-gradient(90% 60% at 102% 8%, rgba(200,164,74,.13), transparent 58%),
    radial-gradient(80% 60% at 50% 120%, rgba(122,34,48,.16), transparent 60%),
    repeating-linear-gradient(90deg, rgba(157,179,171,.055) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(157,179,171,.045) 0 1px, transparent 1px 96px);
  color:var(--cream);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.85;
  overflow-x:hidden;
}
/* 页边细金线，把内容围合成一张图纸 */
body::before,
body::after{
  content:"";
  position:fixed;top:0;bottom:0;width:1px;z-index:50;pointer-events:none;
  background:linear-gradient(180deg,transparent 0%,var(--gold-line) 10%,var(--gold-line) 90%,transparent 100%);
}
body::before{left:clamp(8px,2.2vw,26px);}
body::after{right:clamp(8px,2.2vw,26px);}

h1,h2,h3,h4,h5{font-family:var(--font-serif);font-weight:600;line-height:1.3;letter-spacing:.01em;color:var(--cream);}
h1{font-size:clamp(32px,4.6vw,60px);font-weight:700;}
h2{font-size:clamp(26px,3.4vw,38px);}
h3{font-size:clamp(20px,2.2vw,24px);}
h4{font-size:18px;}
p{color:var(--paper);}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
::selection{background:rgba(200,164,74,.32);color:var(--cream);}
:focus-visible{outline:2px solid var(--gold-light);outline-offset:3px;border-radius:4px;}

/* ---------- 4. 骨架与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
#main-content{display:block;scroll-margin-top:110px;}
.bleed{
  width:100vw;
  margin-inline:calc(50% - 50vw);
}
.grid{display:grid;gap:clamp(20px,3vw,36px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--split{grid-template-columns:5fr 7fr;}
.grid--aside{grid-template-columns:3fr 9fr;}

/* ---------- 5. 跳转链接 ---------- */
.skip-link{
  position:fixed;left:50%;top:-120px;transform:translateX(-50%);
  z-index:200;
  padding:10px 22px;
  background:var(--gold-light);color:var(--ink-900);
  font-size:14px;letter-spacing:.06em;
  border-radius:0 0 var(--radius-pill) var(--radius-pill);
  transition:top .28s var(--ease);
}
.skip-link:focus{top:0;}

/* ---------- 6. 顶栏（框架式导航） ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  border-bottom:1px solid var(--gold-line);
  background-image:
    repeating-linear-gradient(90deg, rgba(200,164,74,.20) 0 1px, transparent 1px 30px),
    linear-gradient(180deg, rgba(7,26,22,.97) 0%, rgba(11,43,36,.94) 100%);
  background-size:100% 9px, 100% 100%;
  background-position:left bottom, center;
  background-repeat:no-repeat, no-repeat;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background-color .35s var(--ease);
}
.scroll-progress{
  position:absolute;left:0;right:0;top:0;height:2px;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--gold),var(--gold-light));
  z-index:3;pointer-events:none;
}
.header-inner{
  display:flex;align-items:center;gap:clamp(12px,2.4vw,34px);
  min-height:86px;padding-block:12px;
  transition:min-height .35s var(--ease),padding .35s var(--ease);
}
.brand{flex:0 0 auto;display:flex;flex-direction:column;gap:3px;padding:4px 0;}
.brand__mark{
  font-family:var(--font-serif);font-weight:700;
  font-size:clamp(19px,2vw,23px);letter-spacing:.08em;color:var(--cream);
  display:inline-flex;align-items:center;
}
.brand__mark::before{
  content:"";width:8px;height:8px;margin-right:11px;
  border:1px solid var(--gold);transform:rotate(45deg);
}
.brand__sub{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--muted);padding-left:19px;
  transition:opacity .3s var(--ease);
}

.primary-nav{flex:1 1 auto;display:flex;justify-content:center;}
.primary-nav__list{display:flex;align-items:center;gap:clamp(6px,1.4vw,22px);}
.primary-nav__item{position:relative;}
.primary-nav__link{
  display:inline-flex;align-items:center;min-height:44px;padding:0 6px;
  font-size:15px;letter-spacing:.06em;color:#CBD4CE;
  position:relative;transition:color .25s var(--ease);
}
.primary-nav__link::after{
  content:"";position:absolute;left:6px;right:6px;bottom:12px;height:1px;
  background:var(--gold-light);transform:scaleX(0);transform-origin:left center;
  transition:transform .32s var(--ease);
}
.primary-nav__link:hover{color:var(--cream);}
.primary-nav__link:hover::after{transform:scaleX(1);}
.primary-nav__link[aria-current="page"]{color:var(--gold-light);}
.primary-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold);}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  min-height:44px;padding:10px 16px;
  border:1px solid var(--gold-line);border-radius:var(--radius-pill);
  color:var(--gold-light);font-size:13px;letter-spacing:.12em;
  transition:border-color .25s var(--ease),background-color .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold-line-strong);background:rgba(200,164,74,.08);}
.nav-toggle__bars{position:relative;display:block;width:18px;height:10px;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1px;background:currentColor;
  transition:transform .3s var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
.site-header[data-nav-open] .nav-toggle__bars::before{transform:translateY(4.5px) rotate(45deg);}
.site-header[data-nav-open] .nav-toggle__bars::after{transform:translateY(-4.5px) rotate(-45deg);}

.header-status{flex:0 0 auto;display:flex;align-items:center;gap:clamp(10px,1.6vw,20px);}
.status-pill{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;border-radius:var(--radius-pill);
  border:1px solid var(--gold-line);
  background:linear-gradient(140deg,rgba(20,69,58,.85),rgba(7,26,22,.7));
  font-size:12px;letter-spacing:.1em;color:#CDD6D0;white-space:nowrap;
}
.status-pill .num{color:var(--gold-light);font-size:14px;margin-left:2px;}
.status-pill__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--gold-light);
  box-shadow:0 0 0 3px rgba(122,34,48,.55);
  animation:pulse 3.2s var(--ease) infinite;
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(122,34,48,.55);}
  50%{box-shadow:0 0 0 6px rgba(122,34,48,.18);}
}
.header-status__hours{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--muted);white-space:nowrap;
}
.header-status__hours .num{color:#C9D2CC;}
.header-status__link{
  display:inline-flex;align-items:center;min-height:44px;padding:0 2px;
  font-size:13px;letter-spacing:.08em;color:var(--gold-light);
  border-bottom:1px solid var(--gold-line);
  transition:border-color .25s var(--ease);
}
.header-status__link:hover{border-color:var(--gold-light);}

.site-header[data-collapsed] .header-inner{min-height:62px;padding-block:6px;}
.site-header[data-collapsed] .brand__sub{opacity:0;}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,7vw,110px);
  padding-top:clamp(40px,5vw,72px);
  border-top:1px solid var(--gold-line);
  background-image:linear-gradient(180deg,var(--ink-900) 0%,rgba(11,43,36,.96) 100%);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:3px;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold-line),transparent);
}
.footer-inner{
  display:grid;
  grid-template-columns:1.4fr 2fr 1.3fr;
  gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(28px,4vw,48px);
}
.footer-brand__mark{
  font-family:var(--font-serif);font-weight:700;font-size:24px;
  letter-spacing:.1em;color:var(--cream);
}
.footer-brand__desc{
  margin-top:14px;max-width:36ch;
  font-size:14px;line-height:1.9;color:var(--muted);
}
.footer-brand__meta{
  margin-top:18px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.1em;color:var(--gold);
}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.4vw,32px);}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:400;
  letter-spacing:.22em;color:var(--gold);margin-bottom:16px;
}
.footer-col__list{display:grid;gap:10px;}
.footer-col__link{
  display:inline-block;font-size:14px;color:#C6CFC9;
  padding:2px 0;transition:color .22s var(--ease),transform .22s var(--ease);
}
.footer-col__link:hover{color:var(--gold-light);transform:translateX(3px);}
.footer-contact__list{display:grid;gap:14px;}
.footer-contact__label{
  display:block;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.16em;color:var(--gold);margin-bottom:4px;
}
.footer-contact__value{display:block;font-size:14px;line-height:1.7;color:#D6DCD7;word-break:break-word;}
.footer-contact__value .num{color:var(--cream);}
.footer-legal{
  display:flex;flex-wrap:wrap;gap:10px 32px;justify-content:space-between;
  padding-top:20px;padding-bottom:34px;
  border-top:1px solid rgba(200,164,74,.22);
}
.footer-legal__item{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--muted);line-height:1.8;
}
.footer-legal__item .num{color:var(--gold-light);}

/* ---------- 8. 返回顶部 ---------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,36px);bottom:clamp(14px,3vw,36px);
  z-index:80;
  display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:10px 18px;
  border:1px solid var(--gold-line);border-radius:var(--radius-pill);
  background:rgba(7,26,22,.92);
  color:var(--gold-light);font-family:var(--font-mono);
  font-size:12px;letter-spacing:.1em;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none;}
.to-top:hover{border-color:var(--gold-line-strong);background:rgba(20,69,58,.95);}

/* ---------- 9. 章节与排版组件 ---------- */
.section{padding-block:clamp(48px,7vw,104px);}
.section__head{display:grid;gap:14px;max-width:820px;}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;
  color:var(--gold);text-transform:uppercase;
}
.section__title{max-width:22ch;}
.section__lead{max-width:40ch;font-size:16px;color:#C6CFC9;}
.rule{
  display:block;height:1px;border:0;margin:0;
  background:linear-gradient(90deg,var(--gold-line-strong),rgba(200,164,74,.04));
  transform-origin:left center;
}
[data-reveal] .rule{transform:scaleX(0);transition:transform 1.1s var(--ease);}
[data-reveal].is-visible .rule{transform:scaleX(1);}
.prose{max-width:40ch;font-size:17px;line-height:1.9;color:var(--paper);}
.prose p+p{margin-top:1.1em;}
.prose strong{color:var(--gold-light);font-weight:600;}
.prose a{border-bottom:1px solid var(--gold-line);color:var(--gold-light);}

/* ---------- 10. 卡片 / 标签 / 数据 ---------- */
.card{
  border:1px solid var(--gold-line);
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(20,69,58,.92),rgba(11,43,36,.82));
  padding:clamp(20px,2.8vw,32px);
}
.card--flat{
  background:none;border:0;border-top:1px solid var(--gold-line);
  border-radius:0;padding-inline:0;
}
.panel{
  border:1px solid rgba(200,164,74,.3);
  border-radius:var(--radius-lg);
  background:linear-gradient(150deg,var(--table-a),var(--table-b));
  padding:clamp(20px,2.8vw,32px);
}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 13px;border-radius:var(--radius-pill);
  border:1px solid var(--gold-line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  color:var(--gold-light);text-transform:uppercase;
}
.tag--wine{background:var(--wine);border-color:transparent;color:var(--cream);}
.tag--blue{background:rgba(18,58,92,.9);border-color:rgba(30,95,138,.8);color:#D3E5F2;}
.chapter-no{
  display:inline-flex;align-items:center;
  padding:3px 12px;border-radius:var(--radius-pill);
  background:var(--wine);color:var(--cream);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
}
.data-list{display:grid;}
.data-list__row{
  display:grid;grid-template-columns:minmax(96px,auto) minmax(0,1fr);
  gap:clamp(12px,2vw,26px);align-items:baseline;
  padding:15px 0;border-bottom:1px dashed rgba(157,179,171,.28);
}
.data-list__row:last-child{border-bottom:0;}
.data-list__key{
  font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;
  color:var(--muted);
}
.data-list__val{
  font-family:var(--font-mono);font-size:clamp(18px,2vw,22px);
  color:var(--gold-light);letter-spacing:.03em;
}
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--gold-line);border-radius:var(--radius-md);
  background:rgba(7,26,22,.4);
}
.table{min-width:560px;font-size:15px;}
.table th{
  padding:14px 18px;text-align:left;
  font-family:var(--font-mono);font-size:12px;font-weight:400;
  letter-spacing:.14em;text-transform:uppercase;color:var(--gold);
  border-bottom:1px solid var(--gold-line);white-space:nowrap;
}
.table td{
  padding:14px 18px;color:#DCD9CE;
  border-bottom:1px solid rgba(157,179,171,.16);
}
.table tbody tr:last-child td{border-bottom:0;}
.table .num{color:var(--gold-light);}

/* ---------- 11. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  min-height:44px;padding:12px 24px;
  border-radius:var(--radius-pill);
  border:1px solid var(--gold-line-strong);
  color:var(--gold-light);font-size:15px;letter-spacing:.06em;
  transition:background-color .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease);
}
.btn:hover{background:rgba(200,164,74,.12);transform:translateY(-1px);}
.btn--primary{
  background:linear-gradient(135deg,var(--gold-light),var(--gold));
  color:var(--ink-900);border-color:transparent;font-weight:600;
}
.btn--primary:hover{background:linear-gradient(135deg,#F2DFA6,var(--gold-light));}
.btn--ghost{background:rgba(7,26,22,.5);border-color:var(--gold-line);color:#D6DCD7;}

/* ---------- 12. 面包屑与章节索引 ---------- */
.breadcrumb{padding-top:clamp(20px,3vw,34px);}
.breadcrumb__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb__link{color:var(--muted);transition:color .22s var(--ease);}
.breadcrumb__link:hover{color:var(--gold-light);}
.breadcrumb__sep{color:rgba(200,164,74,.55);}
.breadcrumb__current{color:var(--gold-light);}

.chapter-index{position:sticky;top:120px;display:grid;gap:2px;font-size:14px;}
.chapter-index__title{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  color:var(--muted);text-transform:uppercase;margin-bottom:14px;
}
.chapter-index__link{
  display:block;padding:10px 0 10px 16px;
  border-left:1px solid rgba(200,164,74,.25);
  color:var(--muted);line-height:1.6;
  transition:color .24s var(--ease),border-color .24s var(--ease),padding-left .24s var(--ease);
}
.chapter-index__link:hover{color:var(--cream);border-left-color:var(--gold-line-strong);}
.chapter-index__link.is-active{
  color:var(--gold-light);border-left-color:var(--gold-light);padding-left:20px;
}
[data-chapter]{scroll-margin-top:120px;}

/* ---------- 13. 图像容器 ---------- */
.figure{display:grid;gap:12px;}
.figure__caption{font-size:13px;line-height:1.75;color:var(--muted);}
.media{
  position:relative;
  --media-ratio:3 / 2;
  aspect-ratio:var(--media-ratio);
  border:1px solid var(--gold-line);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(140deg,rgba(18,58,92,.55),rgba(11,43,36,.92) 55%,rgba(122,34,48,.34));
}
.media > img{width:100%;height:100%;object-fit:cover;}
.media::after{
  content:"";position:absolute;inset:10px;pointer-events:none;
  border:1px solid rgba(200,164,74,.22);
  border-radius:calc(var(--radius-lg) - 10px);
}
.media--32{--media-ratio:3 / 2;}
.media--45{--media-ratio:4 / 5;}
.media--169{--media-ratio:16 / 9;}
.media--11{--media-ratio:1 / 1;}
.media--empty::before{
  content:"";position:absolute;inset:16%;border-radius:50%;
  border:1px dashed rgba(200,164,74,.38);
  background:radial-gradient(circle at 50% 50%,rgba(232,206,134,.2),transparent 66%);
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:34px 20px 18px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.05em;color:#E9E6DC;
  background:linear-gradient(180deg,transparent,rgba(7,26,22,.9));
}

/* ---------- 14. 显现状态 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .8s var(--ease),transform .8s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1180px){
  .header-status__hours{display:none;}
}
@media (max-width:1024px){
  .footer-inner{grid-template-columns:1fr 1fr;}
  .footer-contact{grid-column:1 / -1;}
  .grid--aside{grid-template-columns:1fr;}
}
@media (max-width:980px){
  .nav-toggle{display:inline-flex;margin-left:auto;}
  .header-inner{min-height:72px;}
  .site-header[data-collapsed] .header-inner{min-height:60px;}
  .primary-nav{
    position:absolute;left:0;right:0;top:100%;
    display:block;
    max-height:0;overflow:hidden;visibility:hidden;
    background:linear-gradient(180deg,rgba(7,26,22,.99),rgba(11,43,36,.99));
    border-bottom:1px solid var(--gold-line);
    transition:max-height .42s var(--ease),visibility .42s var(--ease);
  }
  .primary-nav[data-open]{max-height:76vh;overflow-y:auto;visibility:visible;}
  .primary-nav__list{
    flex-direction:column;align-items:stretch;gap:0;
    padding:10px var(--gutter) 22px;
  }
  .primary-nav__item{width:100%;}
  .primary-nav__link{
    width:100%;padding:15px 2px;
    border-bottom:1px solid rgba(200,164,74,.16);
    font-size:16px;
  }
  .primary-nav__link::after{bottom:8px;}
  .primary-nav__link[aria-current="page"]{padding-left:12px;}
  .grid--2,.grid--3,.grid--split{grid-template-columns:1fr;}
  .chapter-index{position:static;margin-bottom:8px;}
}
@media (max-width:760px){
  body::before,body::after{display:none;}
  body{font-size:16px;}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-legal{flex-direction:column;gap:8px;}
  .to-top{padding:10px 15px;font-size:11px;}
}
@media (max-width:620px){
  .header-status{display:none;}
  .footer-inner{grid-template-columns:1fr;}
  .footer-contact{grid-column:auto;}
}

/* ---------- 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;transform:none;}
  [data-reveal] .rule{transform:scaleX(1);}
  .scroll-progress{transition:none;}
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth;}
}