/* ============================================================
   博亚娱乐中心 · 共享站点样式 /assets/site.css
   层级：底纹 → 地标剪影 → 信息块 → 浮动导航 → 客服浮标
   ============================================================ */

:root{
  --indigo:#0E1B36;
  --indigo-2:#1B2A4F;
  --brick:#B23A2E;
  --gold:#D4A24C;
  --celadon:#6FAE9B;
  --plum:#4A3B6B;
  --paper:#F6F1E7;
  --warm:#FBF7F0;
  --ink:#2A2E36;
  --mist:#EBD9B4;

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

  --r-lg:32px;
  --r-md:24px;
  --r-sm:14px;
  --r-pill:999px;

  --header-h:84px;
  --shell:1320px;
  --gutter:clamp(20px,4vw,40px);

  --ease:cubic-bezier(.22,.61,.36,1);
  --t-fast:.2s var(--ease);
  --t-mid:.34s var(--ease);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 20px)}
body{
  margin:0;
  background:var(--indigo);
  color:var(--warm);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,picture{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd,address{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:rgba(212,162,76,.35);color:#fff}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

/* ---------- 中文排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:800;
  line-height:1.24;
  letter-spacing:-.02em;
  color:inherit;
}
h1{font-size:clamp(2.4rem,6vw,4.5rem)}
h2{font-size:clamp(1.8rem,3.4vw,3rem)}
h3{font-size:1.375rem;line-height:1.4}
p{line-height:1.8}
.mono{
  font-family:var(--font-mono);
  font-size:.86em;
  letter-spacing:.08em;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:16px;
  z-index:200;
  padding:11px 20px;
  border-radius:0 0 var(--r-sm) var(--r-sm);
  background:var(--gold);
  color:#22180a;
  font-weight:700;
  font-size:15px;
  transition:top var(--t-fast);
}
.skip-link:focus{top:0}

/* ============================================================
   共享头部：悬浮胶囊导航
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  padding:14px clamp(12px,3vw,32px) 0;
  font-family:var(--font-sans);
}
.header-bar{
  display:flex;
  align-items:center;
  gap:16px;
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding:10px 12px 10px 16px;
  border-radius:var(--r-pill);
  background:rgba(14,27,54,.93);
  border:1px solid rgba(212,162,76,.28);
  box-shadow:0 14px 40px rgba(4,9,20,.42);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
  transition:padding var(--t-mid),box-shadow var(--t-mid),background var(--t-mid);
}
.site-header[data-shrunk] .header-bar{
  padding:6px 10px 6px 14px;
  box-shadow:0 10px 30px rgba(4,9,20,.55);
  background:rgba(14,27,54,.97);
}
.site-header[data-shrunk] .brand-mark__sub{display:none}

/* 品牌印章 */
.brand-mark{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--warm);
}
.brand-mark__seal{
  width:44px;
  height:44px;
  flex:0 0 44px;
  display:grid;
  place-items:center;
  border-radius:50%;
  background:linear-gradient(150deg,var(--brick),#852418);
  border:1px solid rgba(212,162,76,.62);
  color:var(--mist);
  font-family:var(--font-serif);
  font-weight:900;
  font-size:20px;
  line-height:1;
  transition:width var(--t-mid),height var(--t-mid),flex-basis var(--t-mid);
}
.site-header[data-shrunk] .brand-mark__seal{
  width:38px;height:38px;flex-basis:38px;font-size:18px;
}
.brand-mark__text{display:flex;flex-direction:column;line-height:1.2}
.brand-mark__name{
  display:block;
  font-family:var(--font-serif);
  font-weight:800;
  font-size:19px;
  letter-spacing:-.01em;
}
.brand-mark__sub{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--gold);
}

/* 栏目胶囊 */
.primary-nav{flex:1 1 auto;min-width:0}
.nav-capsules{
  display:flex;
  align-items:center;
  gap:4px;
  padding:4px;
  overflow-x:auto;
  scrollbar-width:none;
}
.nav-capsules::-webkit-scrollbar{display:none}
.nav-capsule{
  display:block;
  padding:8px 15px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;
  white-space:nowrap;
  color:rgba(251,247,240,.78);
  transition:color var(--t-fast),background-color var(--t-fast),border-color var(--t-fast);
}
.nav-capsule:hover{
  color:var(--warm);
  background:rgba(212,162,76,.12);
  border-color:rgba(212,162,76,.38);
}
.nav-capsule[aria-current="page"]{
  background:var(--warm);
  color:var(--indigo);
  font-weight:600;
  border-color:var(--warm);
}
.nav-drawer-extra{display:none}
.drawer-note{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(251,247,240,.62);
  margin-bottom:14px;
}

/* 头部右侧动作区 */
.header-actions{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:12px;
}
.update-pill{
  display:flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(212,162,76,.26);
  background:rgba(212,162,76,.07);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(251,247,240,.78);
  white-space:nowrap;
}
.update-pill__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--celadon);
  box-shadow:0 0 0 4px rgba(111,174,155,.18);
}
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 15px;
  border-radius:var(--r-pill);
  border:1px solid rgba(212,162,76,.45);
  background:rgba(212,162,76,.08);
  color:var(--gold);
}
.nav-toggle__bars{
  position:relative;
  width:16px;height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background var(--t-fast);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--t-mid),top var(--t-mid);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}
.nav-toggle__label{font-size:13px;letter-spacing:.06em}

/* 顶部阅读进度 */
.scroll-progress{
  position:fixed;
  top:0;left:0;right:0;
  height:3px;
  z-index:120;
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--brick),var(--gold) 58%,var(--celadon));
  box-shadow:0 0 14px rgba(212,162,76,.55);
}

/* ============================================================
   通用按钮
   ============================================================ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:transform var(--t-fast),background-color var(--t-fast),
             border-color var(--t-fast),color var(--t-fast),box-shadow var(--t-fast);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--brick{
  background:var(--brick);
  color:var(--warm);
  box-shadow:0 8px 22px rgba(178,58,46,.30);
}
.btn--brick:hover{background:#c24535;box-shadow:0 10px 26px rgba(178,58,46,.42)}
.btn--gold{background:var(--gold);color:#22180a}
.btn--gold:hover{background:#e0b25f}
.btn--ghost{
  background:rgba(212,162,76,.06);
  border-color:rgba(212,162,76,.5);
  color:var(--gold);
}
.btn--ghost:hover{background:rgba(212,162,76,.16);border-color:var(--gold)}
.btn--sm{padding:9px 16px;font-size:13px}
.btn--block{width:100%}

/* ============================================================
   布局与容器
   ============================================================ */
.shell{
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:32px;
}
.divider-gold{
  height:1px;
  border:0;
  background:linear-gradient(90deg,transparent,rgba(212,162,76,.55),transparent);
}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(251,247,240,.58);
}
.breadcrumbs a{transition:color var(--t-fast)}
.breadcrumbs a:hover{color:var(--gold)}
.breadcrumbs li+li::before{
  content:"/";
  margin-right:10px;
  color:rgba(212,162,76,.6);
}

/* 正文容器 */
.prose{
  max-width:34em;
  font-size:17px;
  line-height:1.85;
}
.prose > * + *{margin-top:1.2em}
.prose h2{margin-top:2.2em;font-size:clamp(1.6rem,2.6vw,2.2rem)}
.prose h3{margin-top:1.8em}
.prose ul,.prose ol{padding-left:1.3em}
.prose ul{list-style:none}
.prose ul > li{position:relative;padding-left:1.1em;margin-top:.5em}
.prose ul > li::before{
  content:"";
  position:absolute;
  left:0;top:.78em;
  width:8px;height:8px;
  border-radius:2px;
  background:var(--gold);
  opacity:.85;
}
.prose ol{list-style:decimal}
.prose ol > li{margin-top:.5em;padding-left:.2em}
.prose strong{font-weight:600}
.prose a{
  color:var(--gold);
  border-bottom:1px solid rgba(212,162,76,.5);
  transition:border-color var(--t-fast),color var(--t-fast);
}
.prose a:hover{border-bottom-color:var(--gold)}
.lead{
  max-width:36em;
  font-size:clamp(1.05rem,1.5vw,1.22rem);
  line-height:1.75;
  color:rgba(251,247,240,.84);
}

/* 章节头 */
.section-head{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-bottom:clamp(28px,4vw,48px);
}
.section-num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  color:var(--gold);
}
.section-title{
  font-size:clamp(1.8rem,3.4vw,3rem);
  font-family:var(--font-serif);
  font-weight:800;
  line-height:1.2;
  letter-spacing:-.02em;
}

/* ============================================================
   基础组件
   ============================================================ */
.card{
  padding:clamp(22px,3vw,32px);
  border-radius:var(--r-md);
  border:1px solid rgba(212,162,76,.2);
  background:rgba(27,42,79,.7);
}
.card--accent{
  background:linear-gradient(160deg,var(--plum),var(--indigo-2));
  border-color:rgba(212,162,76,.28);
}
.card--paper{
  background:var(--paper);
  color:var(--ink);
  border-color:rgba(42,46,54,.12);
}
.card--paper h2,.card--paper h3{color:var(--ink)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:var(--r-pill);
  border:1px solid rgba(212,162,76,.42);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--gold);
}
.tag--live{border-color:rgba(111,174,155,.6);color:var(--celadon)}
.tag--brick{border-color:rgba(178,58,46,.62);color:#e39a8f}

.note{
  max-width:32em;
  padding-left:16px;
  border-left:2px solid var(--gold);
  font-size:14px;
  line-height:1.75;
  color:rgba(251,247,240,.66);
}

/* 图片容器基础规则 */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--r-lg);
  border:1px solid rgba(212,162,76,.22);
  background:linear-gradient(150deg,var(--indigo-2),var(--plum));
  aspect-ratio:16/9;
}
.media-frame > img,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame[data-ratio="4:3"]{aspect-ratio:4/3}
.media-frame[data-ratio="1:1"]{aspect-ratio:1/1}
.media-frame[data-ratio="3:4"]{aspect-ratio:3/4}
.media-frame[data-ratio="21:9"]{aspect-ratio:21/9}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:radial-gradient(circle at 72% 24%,rgba(212,162,76,.16),transparent 62%);
}
.media-frame--arch{border-radius:clamp(90px,22vw,180px) clamp(90px,22vw,180px) var(--r-md) var(--r-md)}
.media-frame__caption{
  position:absolute;
  inset:auto 0 0 0;
  padding:16px clamp(16px,3vw,24px);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--warm);
  background:linear-gradient(0deg,rgba(14,27,54,.92),transparent);
}

/* 杂志式侧边目录 */
.chapter-index{
  position:sticky;
  top:calc(var(--header-h) + 28px);
  display:flex;
  flex-direction:column;
  gap:2px;
  align-self:start;
}
.chapter-index__link{
  display:flex;
  gap:12px;
  padding:9px 12px;
  border-radius:12px;
  border-left:2px solid transparent;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(251,247,240,.55);
  transition:color var(--t-fast),background-color var(--t-fast),border-color var(--t-fast);
}
.chapter-index__link:hover{
  color:var(--warm);
  background:rgba(212,162,76,.08);
}
.chapter-index__link[data-active]{
  color:var(--gold);
  border-left-color:var(--brick);
  background:rgba(212,162,76,.1);
}

/* 客服浮标 */
.float-help{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:90;
  display:flex;
  flex-direction:column;
  align-items:flex-end;
  gap:10px;
}
.float-help__btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 20px;
  border-radius:var(--r-pill);
  border:1px solid rgba(212,162,76,.55);
  background:rgba(14,27,54,.94);
  color:var(--gold);
  font-size:14px;
  font-weight:600;
  box-shadow:0 14px 36px rgba(4,9,20,.5);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.float-help__panel{
  max-width:270px;
  padding:18px 20px;
  border-radius:var(--r-md);
  border:1px solid rgba(212,162,76,.3);
  background:linear-gradient(160deg,var(--indigo-2),var(--indigo));
  font-size:14px;
  line-height:1.7;
  color:rgba(251,247,240,.82);
  box-shadow:0 18px 44px rgba(4,9,20,.5);
}

/* 显现协议 */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity var(--t-mid),transform var(--t-mid);
}
[data-reveal].is-visible{opacity:1;transform:none}
[data-reveal="wipe"]{
  opacity:1;
  transform:none;
  clip-path:inset(0 100% 0 0);
  transition:clip-path .42s var(--ease);
}
[data-reveal="wipe"].is-visible{clip-path:inset(0 0 0 0)}

/* ============================================================
   共享页脚
   ============================================================ */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(72px,9vw,128px);
  padding:clamp(56px,7vw,92px) 0 28px;
  color:rgba(251,247,240,.78);
  background:
    radial-gradient(ellipse 62% 52% at 14% 0%,rgba(74,59,107,.7),transparent 70%),
    linear-gradient(180deg,#0E1B36 0%,#0A1327 100%);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.75;
  background-image:
    radial-gradient(circle,rgba(212,162,76,.5) 0 1px,transparent 1.7px),
    radial-gradient(circle,rgba(111,174,155,.42) 0 1px,transparent 1.7px);
  background-size:130px 130px,190px 190px;
  background-position:0 0,64px 44px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 76%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 76%);
}
.site-footer::after{
  content:"";
  position:absolute;
  left:50%;
  top:0;
  width:min(940px,124%);
  height:200px;
  transform:translateX(-50%);
  pointer-events:none;
  background:radial-gradient(ellipse 48% 100% at 50% 0%,rgba(212,162,76,.18),transparent 72%);
}
.footer-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.5fr 1fr 1.35fr 1fr;
  gap:clamp(28px,4vw,56px);
  width:min(var(--shell),100%);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.brand-mark--footer{margin-bottom:18px}
.brand-mark--footer .brand-mark__name{font-size:18px}
.footer-brand__line{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
  margin-bottom:14px;
}
.footer-note{
  font-size:14px;
  line-height:1.75;
  color:rgba(251,247,240,.6);
  max-width:26em;
}
.footer-legal{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(251,247,240,.5);
}
.footer-col__title{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
  font-size:15px;
}
.footer-links a{
  border-bottom:1px solid transparent;
  transition:color var(--t-fast),border-color var(--t-fast);
}
.footer-links a:hover{
  color:var(--gold);
  border-bottom-color:rgba(212,162,76,.6);
}
.footer-links--contact{gap:8px}
.footer-contact{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(251,247,240,.82);
}
.footer-address{
  margin-top:14px;
  max-width:26em;
  font-size:14px;
  line-height:1.75;
  color:rgba(251,247,240,.6);
}
.footer-rhythm{
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--celadon);
}
.footer-bottom{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  align-items:center;
  gap:12px 24px;
  width:min(var(--shell),100%);
  margin:clamp(40px,5vw,64px) auto 0;
  padding:22px var(--gutter) 0;
  border-top:1px solid rgba(212,162,76,.22);
  font-size:13px;
  color:rgba(251,247,240,.55);
}
.footer-bottom__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1200px){
  .update-pill{display:none}
}
@media (max-width:1080px){
  .grid-12{grid-template-columns:repeat(8,minmax(0,1fr));gap:24px}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:899px){
  :root{--header-h:74px}
  .nav-toggle{display:inline-flex}
  .header-actions .btn{display:none}
  .header-bar{gap:10px;padding:8px 10px 8px 12px}
  .primary-nav{
    position:fixed;
    top:calc(var(--header-h) + 8px);
    left:clamp(12px,3vw,32px);
    right:clamp(12px,3vw,32px);
    z-index:58;
    display:flex;
    flex-direction:column;
    max-height:calc(100vh - var(--header-h) - 28px);
    overflow-y:auto;
    padding:18px;
    border-radius:var(--r-md);
    border:1px solid rgba(212,162,76,.3);
    background:linear-gradient(180deg,rgba(27,42,79,.99),rgba(14,27,54,.99));
    box-shadow:0 26px 64px rgba(4,9,20,.62);
    opacity:0;
    visibility:hidden;
    transform:translateY(-14px);
    transition:opacity var(--t-mid),transform var(--t-mid),visibility var(--t-mid);
  }
  .primary-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-capsules{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    overflow:visible;
    padding:0;
  }
  .nav-capsule{
    padding:13px 14px;
    border-radius:var(--r-sm);
    font-size:16px;
    border-bottom:1px solid rgba(212,162,76,.14);
  }
  .nav-capsule:hover{background:rgba(212,162,76,.12)}
  .nav-capsule[aria-current="page"]{border-bottom-color:transparent}
  .nav-drawer-extra{
    display:block;
    margin-top:20px;
    padding-top:20px;
    border-top:1px solid rgba(212,162,76,.22);
  }
}
@media (max-width:680px){
  body{font-size:16px}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
  .brand-mark__sub{display:none}
  .brand-mark__name{font-size:17px}
  .brand-mark__seal{width:40px;height:40px;flex-basis:40px;font-size:18px}
  .footer-inner{grid-template-columns:1fr;gap:34px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .media-frame--arch{border-radius:96px 96px var(--r-sm) var(--r-sm)}
  .chapter-index{position:static}
}

/* ============================================================
   动效偏好
   ============================================================ */
@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],
  [data-reveal="wipe"]{
    opacity:1;
    transform:none;
    clip-path:none;
  }
}