/* ============================================================
   斗地主现金局 · /assets/site.css
   共享外壳：框架式导航 + 深夜牌桌配色 + 蓝图网格
   ============================================================ */

/* ---------- 01 设计令牌 ---------- */
:root{
  --night:#10203A;
  --night-deep:#0B1526;
  --felt:#0F4C3F;
  --felt-deep:#0A3830;
  --ivory:#F5F0E4;
  --gold:#E2A73A;
  --gold-soft:#F0B94F;
  --red:#CE2A32;
  --ink:#0B0E12;
  --blue-line:#6E8FA3;
  --table-shadow:#1A2733;
  --ok:#46A97B;
  --grey:#C3CDD6;
  --line:rgba(110,143,163,.28);
  --line-soft:rgba(110,143,163,.16);
  --rail-w:264px;
  --bar-h:62px;
  --radius-card:18px;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow-card:0 20px 44px -26px rgba(0,0,0,.8);
}

/* ---------- 02 重置与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--bar-h) + 22px);
}
body{
  margin:0;
  min-height:100%;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--grey);
  background-color:var(--night);
  background-image:linear-gradient(90deg, rgba(110,143,163,.10) 1px, transparent 1px);
  background-size:240px 100%;
}
img,svg{max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:900;letter-spacing:-.01em;line-height:1.25;color:var(--ivory)}
p{margin:0}
ul,ol{margin:0;padding:0}
li{list-style:none}
button{font:inherit}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:4px}
[id]{scroll-margin-top:calc(var(--bar-h) + 26px)}

.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 18px;border-radius:999px;
  background:var(--gold);color:#1A1206;
  font-size:14px;font-weight:700;text-decoration:none;
  transform:translateY(-170%);
  transition:transform .2s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 03 排版 ---------- */
.eyebrow{
  display:block;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gold);
}
.section-head{margin:0 0 22px;max-width:46ch}
.section-title{
  margin:.28em 0 .4em;
  font-size:clamp(28px,4.4vw,40px);
  font-weight:900;letter-spacing:-.01em;color:var(--ivory);
}
.lede{font-size:17px;line-height:1.75;color:var(--grey);max-width:52ch}

.prose{
  max-width:66ch;
  font-size:17px;line-height:1.75;color:var(--ink);
}
.prose p{margin:0 0 1.2em}
.prose h3{margin:1.6em 0 .5em;font-size:22px;color:var(--ink)}
.prose a{color:#8C1F26;text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--red)}
.prose code,.mono{font-family:var(--font-mono);font-size:14px;letter-spacing:.05em}

/* ---------- 04 主内容留位 ---------- */
#main-content{
  padding-top:calc(var(--bar-h) + 28px);
  padding-bottom:52px;
}

/* ---------- 05 布局容器 ---------- */
.shell{
  width:100%;max-width:1180px;margin:0 auto;padding:0 18px;
}
.shell-narrow{max-width:820px}
.grid{display:grid;gap:22px;grid-template-columns:1fr}
@media (min-width:760px){
  .grid-2{grid-template-columns:1fr 1fr}
  .grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1024px){
  .grid-12{display:grid;gap:26px;grid-template-columns:repeat(12,minmax(0,1fr))}
  .col-2{grid-column:span 2}
  .col-3{grid-column:span 3}
  .col-4{grid-column:span 4}
  .col-6{grid-column:span 6}
  .col-7{grid-column:span 7}
  .col-8{grid-column:span 8}
  .col-12{grid-column:span 12}
}

/* 纵向刻度尺：蓝图秩序的骨架 */
.ruler{position:relative;padding-left:22px}
.ruler::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,rgba(110,143,163,.5) 6%,rgba(110,143,163,.5) 94%,transparent);
}
.ruler::after{
  content:"";position:absolute;left:-4px;top:0;bottom:0;width:9px;opacity:.55;
  background-image:repeating-linear-gradient(180deg, var(--blue-line) 0 1px, transparent 1px 240px);
}

/* ---------- 06 头部：框架式导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:linear-gradient(180deg, rgba(11,21,38,.98), rgba(11,21,38,.94));
  border-bottom:1px solid var(--line);
}
.header-bar{
  display:flex;align-items:center;gap:10px;
  min-height:var(--bar-h);
  padding:9px 16px;
}

.brand{
  display:flex;align-items:center;gap:10px;
  margin-right:auto;text-decoration:none;color:var(--ivory);
}
.brand-mark{
  position:relative;display:grid;place-items:center;
  width:28px;height:28px;border-radius:50%;
  border:1.5px solid var(--gold);
  background:
    radial-gradient(circle at 50% 50%, rgba(11,21,38,1) 0 48%, transparent 49%),
    repeating-conic-gradient(from 0deg, rgba(226,167,58,.9) 0deg 12deg, rgba(11,21,38,0) 12deg 45deg);
  flex:0 0 auto;
}
.brand-mark-core{
  width:9px;height:9px;border-radius:50%;background:var(--gold);
}
.brand-type{display:flex;flex-direction:column;min-width:0}
.brand-name{font-size:16px;font-weight:900;letter-spacing:-.01em;line-height:1.15;color:var(--ivory)}
.brand-domain{
  display:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--blue-line);
}

.header-coord{display:none;align-items:baseline;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.coord-idx{color:var(--gold)}
.coord-sep{color:rgba(110,143,163,.6)}
.coord-label{color:var(--blue-line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:11em}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:999px;
  border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;text-decoration:none;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-gold{background:var(--gold);color:#1A1206;box-shadow:0 8px 20px -10px rgba(226,167,58,.55)}
.btn-gold:hover{background:var(--gold-soft);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--ivory);border-color:rgba(110,143,163,.5)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold)}
.header-cta{font-size:14px;padding:10px 15px;white-space:nowrap;flex:0 0 auto}

.nav-toggle{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 13px;border-radius:999px;
  background:transparent;color:var(--ivory);
  border:1px solid rgba(110,143,163,.45);
  font-size:14px;line-height:1;cursor:pointer;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold)}
.nav-toggle-lines{display:inline-flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle-lines i{display:block;height:2px;border-radius:2px;background:currentColor}
.nav-toggle-lines i:nth-child(2){width:68%}
.nav-toggle-text{display:none}
@media (min-width:520px){.nav-toggle-text{display:inline}}

/* 移动端抽屉 */
.frame-nav{
  position:fixed;top:0;right:0;bottom:0;z-index:75;
  width:min(320px,86vw);
  padding:78px 18px 30px;
  overflow-y:auto;
  background:linear-gradient(180deg,#0B1526 0%,#10203A 58%,#0F4C3F 100%);
  border-left:1px solid var(--line);
  box-shadow:-24px 0 60px rgba(4,7,11,.65);
  transform:translateX(105%);
  transition:transform .28s cubic-bezier(.4,0,.2,1);
}
.frame-nav[data-open]{transform:translateX(0)}
.frame-nav-title{
  margin:0 0 14px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.16em;text-transform:uppercase;color:var(--blue-line);
}
.frame-nav-list{display:flex;flex-direction:column;gap:4px}
.frame-nav-link{
  display:flex;align-items:baseline;gap:12px;
  padding:12px 14px;
  border-left:2px solid transparent;
  border-radius:2px 12px 12px 2px;
  color:var(--grey);font-size:16px;text-decoration:none;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.frame-nav-link:hover{color:var(--ivory);background-color:rgba(110,143,163,.14)}
.frame-nav-link[aria-current="page"]{
  color:var(--gold);border-left-color:var(--gold);
  background:linear-gradient(90deg, rgba(226,167,58,.18), rgba(226,167,58,0));
}
.fn-idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--blue-line)}
.frame-nav-link[aria-current="page"] .fn-idx{color:var(--gold)}
.frame-nav-link[aria-current="page"] .fn-label{font-weight:700}
.frame-nav-note{
  margin:26px 0 0;padding-top:16px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:rgba(110,143,163,.75);
}

/* ---------- 07 桌面：导航成为页面边框 ---------- */
@media (min-width:900px){
  html{scroll-padding-top:26px}
  #main-content{margin-left:var(--rail-w);padding-top:42px;padding-bottom:84px}
  .shell{padding:0 34px}
  .site-header{
    top:0;bottom:0;left:0;right:auto;
    width:var(--rail-w);
    display:flex;flex-direction:column;
    background:linear-gradient(180deg,#10203A 0%,#0B1526 62%,#0B0E12 100%);
    border-right:1px solid var(--line);
    border-bottom:0;
  }
  .header-bar{
    flex-direction:column;align-items:stretch;gap:14px;
    padding:26px 22px 20px;
    border-bottom:1px solid var(--line-soft);
  }
  .brand{margin-right:0}
  .brand-domain{display:block}
  .header-coord{display:flex;padding-left:2px}
  .header-cta{width:100%;padding:12px 18px}
  .nav-toggle{display:none}
  .frame-nav{
    position:static;width:auto;transform:none;flex:1 1 auto;
    padding:22px 14px 26px;overflow-y:auto;
    background:transparent;border-left:0;box-shadow:none;
  }
}

/* ---------- 08 页脚 ---------- */
.site-footer{
  margin-left:0;
  padding:44px 18px 22px;
  color:var(--grey);
  font-size:14px;
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(15,76,63,.9), rgba(15,76,63,0) 62%),
    linear-gradient(180deg,#0B1526 0%,#0B0E12 100%);
  border-top:1px solid var(--line);
}
@media (min-width:900px){
  .site-footer{margin-left:var(--rail-w);padding:60px 34px 26px}
}
.footer-grid{
  display:grid;gap:30px;grid-template-columns:1fr;
  max-width:1180px;margin:0 auto;
}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:38px}}

.footer-col{min-width:0}
.footer-chip{
  display:block;width:30px;height:30px;margin-bottom:14px;border-radius:50%;
  border:2px solid var(--gold);
  background:
    radial-gradient(circle at 50% 50%, rgba(11,14,18,1) 0 52%, transparent 53%),
    repeating-conic-gradient(from 0deg, rgba(226,167,58,.85) 0deg 12deg, rgba(11,14,18,0) 12deg 45deg);
}
.footer-brand-name{
  margin:0 0 8px;font-size:20px;font-weight:900;letter-spacing:-.01em;color:var(--ivory);
}
.footer-line{margin:0;max-width:24em;line-height:1.75;color:var(--grey)}
.footer-title{
  margin:0 0 14px;font-family:var(--font-mono);font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--gold);
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-list a{
  color:var(--grey);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer-list a:hover{color:var(--ivory);border-bottom-color:var(--gold)}
.footer-list-plain li{line-height:1.65;color:var(--grey);word-break:break-word}
.footer-key{
  display:inline-block;min-width:44px;margin-right:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--blue-line);
}
.footer-base{
  display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between;
  max-width:1180px;margin:34px auto 0;padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--blue-line);
}
.footer-legal,.footer-copy{margin:0}

/* ---------- 09 面包屑 ---------- */
.breadcrumb{margin:0 0 22px}
.breadcrumb-list{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em}
.breadcrumb-list li{display:flex;align-items:center;gap:8px;color:var(--blue-line)}
.breadcrumb-list li::after{content:"/";color:rgba(110,143,163,.5)}
.breadcrumb-list li:last-child::after{content:""}
.breadcrumb-list a{color:var(--blue-line);text-decoration:none;transition:color .2s ease}
.breadcrumb-list a:hover{color:var(--gold)}
.breadcrumb-list [aria-current="page"]{color:var(--ivory)}

/* ---------- 10 面板 ---------- */
.well{
  padding:26px 22px;
  border-radius:var(--radius-card) var(--radius-card) var(--radius-card) 4px;
  background:var(--ivory);
  color:var(--ink);
  box-shadow:var(--shadow-card);
}
.well-dark{
  padding:26px 22px;
  border-radius:var(--radius-card) var(--radius-card) 4px var(--radius-card);
  background:linear-gradient(160deg, rgba(15,76,63,.92), rgba(16,32,58,.92));
  color:var(--ivory);
  border:1px solid var(--line);
  box-shadow:var(--shadow-card);
}
.well-dark p{color:var(--grey)}

/* 专题研究板 */
.plate{
  position:relative;
  padding:24px 22px 22px;
  border:1px solid var(--line);
  border-radius:16px 16px 16px 4px;
  background:linear-gradient(155deg, rgba(15,76,63,.55), rgba(16,32,58,.75));
  box-shadow:var(--shadow-card);
}
.plate-idx{
  display:block;margin-bottom:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--gold);
}
.plate-title{margin:0 0 10px;font-size:20px;font-weight:900;color:var(--ivory)}
.plate-note{margin:0;font-size:15px;line-height:1.7;color:var(--grey)}

/* ---------- 11 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border-radius:999px;
  border:1px solid currentColor;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;line-height:1.6;
}
.tag-gold{color:var(--gold)}
.tag-red{color:#F0838A}
.tag-green{color:var(--ok)}

/* ---------- 12 图片容器（页面阶段放置占位图） ---------- */
.media-frame{
  position:relative;margin:0;overflow:hidden;
  border:1px solid var(--line);
  border-radius:16px 20px 16px 20px;
  background:linear-gradient(150deg,#0F4C3F 0%,#10203A 70%,#0B0E12 100%);
  box-shadow:var(--shadow-card);
}
.media-frame img{
  display:block;width:100%;height:100%;
  aspect-ratio:4/3;object-fit:cover;
}
.media-frame figcaption{
  padding:10px 14px 12px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.05em;
  color:var(--blue-line);
  border-top:1px solid var(--line-soft);
}
.media-tilt-l{transform:rotate(-2.2deg)}
.media-tilt-r{transform:rotate(2.2deg)}

/* ---------- 13 动效工具 ---------- */
[data-reveal]{
  opacity:0;
  translate:0 14px;
  transition:opacity .36s ease,translate .36s ease;
}
[data-reveal].is-visible{opacity:1;translate:0 0}

.is-flash{
  outline:3px solid var(--gold);
  outline-offset:6px;
  border-radius:6px;
  transition:outline-color .6s ease;
}

.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:80;
  background:rgba(110,143,163,.16);
  pointer-events:none;
}
.scroll-progress > span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--gold),var(--red));
  transition:width .12s linear;
}

.to-top{
  position:fixed;right:16px;bottom:16px;z-index:70;
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid rgba(226,167,58,.55);
  background:rgba(11,21,38,.94);
  color:var(--ivory);
  font-size:14px;line-height:1;cursor:pointer;
  opacity:0;visibility:hidden;
  translate:0 12px;
  transition:opacity .24s ease,translate .24s ease,visibility .24s ease,border-color .2s ease;
}
.to-top[data-visible]{opacity:1;visibility:visible;translate:0 0}
.to-top:hover{border-color:var(--gold);color:var(--gold)}
.to-top-chip{
  width:16px;height:16px;border-radius:50%;
  border:1.5px solid var(--gold);
  background:repeating-conic-gradient(from 0deg, rgba(226,167,58,.85) 0deg 14deg, rgba(0,0,0,0) 14deg 45deg);
}
@media (min-width:900px){
  .scroll-progress{left:var(--rail-w)}
  .to-top{right:28px;bottom:28px}
}

/* ---------- 14 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;
  }
  [data-reveal]{opacity:1;translate:0 0}
  .to-top{translate:0 0}
}