/* ============================================================
   365棋牌游 · 共享样式  /assets/site.css
   深墨绿绒面 · 暗金细线 · 朱红功能块 · 纵向叙事长卷
   ============================================================ */

:root{
  --felt:#0B241E;
  --felt-deep:#12352B;
  --felt-lift:#1B4A3C;
  --gold:#A8842C;
  --gold-bright:#E3C46A;
  --red:#C0392B;
  --red-deep:#8E2A20;
  --paper:#F5F2E9;
  --stone:#7E8C86;
  --night:#0A0F0D;

  --rule:rgba(168,132,44,.45);
  --rule-soft:rgba(168,132,44,.22);
  --paper-soft:rgba(245,242,233,.78);

  --font-head:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Consolas,"Courier New",monospace;

  --fs-xs:12px;
  --fs-sm:14px;
  --fs-base:16px;
  --fs-md:20px;
  --fs-lg:28px;
  --fs-xl:40px;
  --fs-2xl:56px;

  --shell:1180px;
  --gutter:20px;
  --section-gap:clamp(56px,9vw,112px);
  --ease:cubic-bezier(.2,.7,.3,1);
}

@media (min-width:768px){
  :root{ --gutter:32px; }
}

/* ---------- reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:104px;
  color-scheme:dark;
}

body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{ margin:0; }
ul,ol{ padding:0; list-style:none; }
img,svg{ display:block; max-width:100%; }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer; }
a{ color:inherit; }

/* ---------- 版面基底 ---------- */
body{
  min-height:100vh;
  background-color:var(--felt);
  background-image:
    radial-gradient(900px 460px at 50% -8%, rgba(27,74,60,.80), rgba(11,36,30,0) 70%),
    repeating-linear-gradient(90deg, rgba(168,132,44,.055) 0 1px, rgba(0,0,0,0) 1px 96px);
  background-repeat:no-repeat,repeat;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--fs-base);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:600;
  font-stretch:condensed;
  letter-spacing:-.02em;
  line-height:1.15;
  color:var(--paper);
}
h1{ font-size:clamp(34px,6vw,var(--fs-2xl)); }
h2{ font-size:clamp(26px,4vw,var(--fs-xl)); }
h3{ font-size:clamp(20px,2.6vw,var(--fs-lg)); }
h4{ font-size:var(--fs-md); }

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

/* ---------- 通用容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.col-main{ grid-column:1 / -1; min-width:0; }
.col-side{ grid-column:1 / -1; min-width:0; }

@media (min-width:900px){
  .grid{ gap:32px; }
  .col-main{ grid-column:1 / span 7; }
  .col-side{ grid-column:9 / span 4; }
}

.measure{ max-width:68ch; }

/* ---------- 文字工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.08em;
  color:var(--gold);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:20px;
  height:1px;
  background:var(--gold);
}

.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  text-align:right;
}

.link{
  color:var(--paper);
  text-decoration:underline;
  text-decoration-color:var(--gold);
  text-decoration-thickness:1px;
  text-underline-offset:3px;
  transition:color .15s var(--ease), text-decoration-color .15s var(--ease);
}
.link:visited{
  color:var(--stone);
  text-decoration-color:var(--stone);
}
.link:hover{
  color:var(--gold-bright);
  text-decoration-color:var(--gold-bright);
}

/* ---------- 章节推进 ---------- */
.chapter{ margin-top:var(--section-gap); }

.chapter__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 16px;
  padding-bottom:12px;
  margin-bottom:28px;
  border-bottom:1px solid var(--rule);
}
.chapter__num{
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.08em;
  color:var(--gold);
}
.chapter__title{ font-size:clamp(22px,3vw,var(--fs-lg)); }
.chapter__note{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.06em;
  color:var(--stone);
}

/* ---------- 按钮：筹码 ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid var(--gold);
  border-radius:2px;
  background:var(--felt-lift);
  color:var(--paper);
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.04em;
  line-height:1.2;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .15s var(--ease), background-color .15s var(--ease),
             border-color .15s var(--ease), color .15s var(--ease);
}
.chip:hover{
  transform:translateX(6px);
  border-color:var(--gold-bright);
  color:var(--gold-bright);
}
.chip:active{ transform:translateX(6px) scale(.99); }

.chip--red{
  background:var(--red);
  border-color:var(--red);
  color:var(--paper);
  box-shadow:0 10px 24px rgba(0,0,0,.35);
}
.chip--red:hover{
  background:var(--red-deep);
  border-color:var(--gold-bright);
  color:var(--paper);
}
.chip--ghost{
  background:transparent;
  color:var(--gold-bright);
}
.chip--ghost:hover{ background:rgba(27,74,60,.55); }

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  padding:20px;
  border:1px solid var(--rule-soft);
  border-radius:2px;
  background:var(--felt-deep);
  transition:border-color .15s var(--ease), background-color .15s var(--ease), transform .15s var(--ease);
}
.card:hover{
  border-color:var(--gold);
  background:var(--felt-lift);
  transform:translateY(-2px);
}

/* ---------- 数据表 ---------- */
.table-wrap{
  width:100%;
  overflow-x:auto;
  border:1px solid var(--rule-soft);
  border-radius:2px;
  background:rgba(18,53,43,.6);
}
.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:var(--fs-sm);
}
.data-table caption{
  padding:12px 16px;
  text-align:left;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.08em;
  color:var(--stone);
}
.data-table th,
.data-table td{
  padding:10px 16px;
  border-bottom:1px solid var(--rule-soft);
  text-align:left;
  vertical-align:top;
}
.data-table thead th{
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  font-weight:500;
  letter-spacing:.08em;
  color:var(--gold);
  border-bottom:1px solid var(--rule);
  white-space:nowrap;
}
.data-table tbody tr{ transition:background-color .15s var(--ease); }
.data-table tbody tr:hover{ background:rgba(27,74,60,.65); }
.data-table tbody tr:last-child td{ border-bottom:0; }
.data-table .num{ text-align:right; }

/* ---------- 折叠 ---------- */
.fold{
  border:1px solid var(--rule-soft);
  border-radius:2px;
  background:var(--felt-deep);
  transition:border-color .15s var(--ease);
}
.fold + .fold{ margin-top:12px; }
.fold[open]{ border-color:var(--rule); }
.fold summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:14px 18px;
  cursor:pointer;
  font-family:var(--font-head);
  font-size:var(--fs-base);
  letter-spacing:0;
  list-style:none;
}
.fold summary::-webkit-details-marker{ display:none; }
.fold summary::after{
  content:"+";
  font-family:var(--font-mono);
  font-size:18px;
  line-height:1;
  color:var(--gold);
  transition:color .15s var(--ease);
}
.fold[open] summary::after{ content:"–"; color:var(--gold-bright); }
.fold summary:hover{ color:var(--gold-bright); }
.fold__body{
  padding:0 18px 18px;
  color:var(--paper-soft);
  font-size:15px;
}

/* ---------- 影像容器（页面阶段放入图片） ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--rule-soft);
  border-radius:2px;
  background:var(--felt-deep);
}
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame--tall{ aspect-ratio:3 / 4; }

.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
}

.media-frame--empty::before{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(135deg, rgba(168,132,44,.16) 0 1px, rgba(0,0,0,0) 1px 14px);
}
.media-frame--empty::after{
  content:"影像位";
  position:absolute;
  left:14px;
  bottom:12px;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.08em;
  color:var(--gold);
}

.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:12px 14px;
  background:linear-gradient(to top, rgba(10,15,13,.94), rgba(10,15,13,0));
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.04em;
  color:var(--paper);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding-block:22px 0;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.06em;
  color:var(--stone);
}
.breadcrumb ul{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
}
.breadcrumb li + li::before{
  content:"/";
  margin-right:6px;
  color:var(--gold);
}
.breadcrumb a{
  color:var(--stone);
  text-decoration:none;
  transition:color .15s var(--ease);
}
.breadcrumb a:hover{ color:var(--gold-bright); }
.breadcrumb [aria-current="page"]{ color:var(--paper); }

/* ---------- 正文排版 ---------- */
.prose p,
.prose ul,
.prose ol{ max-width:68ch; }
.prose p + p{ margin-top:16px; }
.prose h2{ margin-top:var(--section-gap); }
.prose h3{ margin-top:40px; }
.prose ul,
.prose ol{ margin-top:12px; display:grid; gap:8px; }
.prose li{ padding-left:18px; position:relative; }
.prose li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:1px;
  background:var(--gold);
}
.prose strong{ color:var(--gold-bright); font-weight:600; }

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-64px;
  z-index:200;
  padding:10px 18px;
  border-radius:2px;
  background:var(--gold-bright);
  color:var(--night);
  font-size:14px;
  text-decoration:none;
  transition:top .15s var(--ease);
}
.skip-link:focus{ top:12px; }

/* ---------- 页头 ---------- */
.site-header{
  --top-h:0px;
  position:sticky;
  top:calc(var(--top-h) * -1);
  z-index:60;
}

.header-top{
  display:none;
  height:47px;
  background:var(--night);
  border-bottom:1px solid var(--rule-soft);
}
.header-top__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  height:100%;
  font-size:13px;
  color:var(--stone);
}
.header-top__brand{
  display:flex;
  align-items:baseline;
  gap:12px;
  min-width:0;
}
.brand-name{
  font-family:var(--font-head);
  font-size:14px;
  letter-spacing:.02em;
  color:var(--paper);
  white-space:nowrap;
}
.header-top__tag{
  font-size:12px;
  letter-spacing:.04em;
  color:var(--stone);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.header-top__meta{
  display:flex;
  align-items:center;
  gap:18px;
  white-space:nowrap;
}
.header-top__link{
  color:var(--gold);
  text-decoration:none;
  border-bottom:1px solid var(--gold);
  transition:color .15s var(--ease), border-color .15s var(--ease);
}
.header-top__link:hover{
  color:var(--gold-bright);
  border-bottom-color:var(--gold-bright);
}

.header-main{
  position:relative;
  background:var(--felt-deep);
  border-bottom:1px solid var(--rule);
}
.header-main__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:12px;
  min-height:62px;
}
.header-main__logo{
  margin-right:auto;
  font-family:var(--font-head);
  font-size:19px;
  letter-spacing:-.02em;
  color:var(--paper);
  text-decoration:none;
  white-space:nowrap;
  transition:color .15s var(--ease);
}
.header-main__logo:hover{ color:var(--gold-bright); }

.header-main__cta{
  padding:10px 14px;
  font-size:13px;
}

/* 汉堡按钮 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-left:10px;
  padding:10px 14px;
  border:1px solid var(--gold);
  border-radius:2px;
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.08em;
  transition:border-color .15s var(--ease), color .15s var(--ease), background-color .15s var(--ease);
}
.nav-toggle:hover{
  border-color:var(--gold-bright);
  color:var(--gold-bright);
  background:rgba(27,74,60,.6);
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  background:var(--gold-bright);
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  background:var(--gold-bright);
}
.nav-toggle__bars::before{ top:-5px; }
.nav-toggle__bars::after{ top:5px; }

/* 导航（移动端） */
.primary-nav{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  max-height:calc(100vh - 72px);
  overflow-y:auto;
  padding:6px 0 14px;
  background:var(--felt-deep);
  border-top:1px solid var(--rule);
  border-bottom:1px solid var(--gold);
  box-shadow:0 18px 32px rgba(0,0,0,.5);
}
.primary-nav[data-open]{ display:block; }
.primary-nav__list{
  display:flex;
  flex-direction:column;
  padding-inline:var(--gutter);
}
.primary-nav__link{
  display:block;
  padding:14px 0 14px 12px;
  border-left:2px solid transparent;
  border-bottom:1px solid var(--rule-soft);
  color:var(--paper);
  font-size:15px;
  text-decoration:none;
  transition:color .15s var(--ease), border-color .15s var(--ease), background-color .15s var(--ease), padding-left .15s var(--ease);
}
.primary-nav__list li:last-child .primary-nav__link{ border-bottom:0; }
.primary-nav__link:hover{
  color:var(--gold-bright);
  border-left-color:var(--gold);
  padding-left:16px;
}
.primary-nav__link[aria-current="page"]{
  color:var(--gold-bright);
  border-left-color:var(--gold-bright);
  background:rgba(27,74,60,.7);
}

/* 滚动进度 */
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--rule-soft);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:var(--gold-bright);
}

@media (min-width:900px){
  .site-header{ --top-h:47px; }
  .header-top{ display:block; }
  .header-main__inner{ min-height:68px; gap:16px; }
  .header-main__logo{ margin-right:0; font-size:21px; }
  .header-main__cta{ margin-left:16px; padding:11px 18px; font-size:14px; }
  .nav-toggle{ display:none; }

  .primary-nav{
    display:block;
    position:static;
    margin-left:auto;
    max-height:none;
    overflow:visible;
    padding:0;
    background:transparent;
    border:0;
    box-shadow:none;
  }
  .primary-nav__list{
    flex-direction:row;
    align-items:stretch;
    gap:2px;
    padding-inline:0;
  }
  .primary-nav__link{
    padding:21px clamp(8px,1vw,14px);
    border-left:0;
    border-bottom:2px solid transparent;
    font-size:14px;
    letter-spacing:.02em;
  }
  .primary-nav__link:hover{
    padding-left:clamp(8px,1vw,14px);
    border-bottom-color:var(--gold);
    background:rgba(27,74,60,.5);
  }
  .primary-nav__link[aria-current="page"]{
    border-bottom-color:var(--gold-bright);
    background:rgba(27,74,60,.8);
  }
}

@media (min-width:900px) and (max-width:1080px){
  .header-top__tag{ display:none; }
}

@media (max-width:479px){
  .header-main__cta{ display:none; }
}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--section-gap);
  padding-top:56px;
  background:var(--night);
  border-top:1px solid var(--rule);
  color:var(--paper);
}

.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:44px;
}

.footer-brand__name{
  font-family:var(--font-head);
  font-size:22px;
  letter-spacing:-.01em;
  color:var(--paper);
}
.footer-brand__text{
  margin-top:12px;
  max-width:34ch;
  font-size:15px;
  color:var(--paper-soft);
}
.footer-brand__cta{ margin-top:20px; }

.footer-col__title{
  padding-bottom:8px;
  margin-bottom:14px;
  border-bottom:1px solid var(--rule-soft);
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  font-weight:500;
  letter-spacing:.08em;
  color:var(--gold);
}
.footer-col__list{
  display:grid;
  gap:10px;
  font-size:15px;
}

.footer-link{
  color:var(--paper-soft);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .15s var(--ease), border-color .15s var(--ease);
}
.footer-link:visited{ color:var(--stone); }
.footer-link:hover{
  color:var(--gold-bright);
  border-bottom-color:var(--gold-bright);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:8px 28px;
  padding-block:22px;
  border-top:1px solid var(--rule-soft);
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.04em;
  color:var(--stone);
}
.footer-legal__line{ margin:0; }

@media (min-width:640px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (min-width:1000px){
  .footer-grid{
    grid-template-columns:1.5fr 1fr 1fr 1fr;
    gap:32px;
  }
  .site-footer{ padding-top:64px; }
}

/* ---------- 动效：显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .18s var(--ease), transform .18s var(--ease);
}
.js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ---------- 复制反馈 ---------- */
.copy-btn{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--rule);
  border-radius:2px;
  background:transparent;
  font-family:var(--font-mono);
  font-size:var(--fs-xs);
  letter-spacing:.06em;
  color:var(--gold);
  transition:border-color .15s var(--ease), color .15s var(--ease), background-color .15s var(--ease);
}
.copy-btn:hover{
  border-color:var(--gold-bright);
  color:var(--gold-bright);
  background:rgba(27,74,60,.6);
}
.copy-btn[data-state="copied"]{
  border-color:var(--red);
  color:var(--paper);
  background:var(--red);
}

/* ---------- 减弱动效 ---------- */
@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 [data-reveal]{ opacity:1; transform:none; }
  .chip:hover,
  .card:hover{ transform:none; }
}

/* ---------- 打印友好 ---------- */
@media print{
  body{ background:#fff; color:#111; }
  .site-header,
  .site-footer,
  .scroll-progress{ display:none; }
}