/* ============================================================
   皇冠体彩官网 · 城市坐标锚点 / site.css
   ============================================================ */

:root{
  --ink-deep:#06121F;
  --ink:#0B1E33;
  --panel:#122A44;
  --gold:#D4AF37;
  --gold-lit:#F2D98C;
  --lime:#B7F34A;
  --paper:#E9EEF5;
  --muted:#9FB2C8;
  --line:#2C4A68;
  --amber:#F0A93B;

  --shell-w:1240px;
  --gutter:clamp(16px,4vw,40px);
  --header-h:76px;

  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  --fs-body:17px;
  --fs-card:20px;
  --fs-section:28px;
  --fs-page:40px;
  --fs-num:44px;

  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:96px;
}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right, rgba(44,74,104,.24) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44,74,104,.24) 1px, transparent 1px);
  background-size:80px 80px;
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--fs-body);
  font-weight:400;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden;}
img,svg,video{max-width:100%;height:auto;display:block;}
button{font-family:inherit;}

h1,h2,h3,h4{margin:0 0 16px;font-weight:900;line-height:1.3;color:var(--paper);}
h1{font-size:clamp(28px,4.4vw,var(--fs-page));letter-spacing:.01em;}
h2{font-size:var(--fs-section);}
h3{font-size:var(--fs-card);font-weight:700;}
p{margin:0 0 20px;}
ul,ol{margin:0 0 20px;padding-left:1.2em;}
li{margin-bottom:8px;}
a{color:var(--gold-lit);text-decoration:none;}
a:hover{color:var(--gold);}
strong{font-weight:700;color:var(--paper);}
hr{border:0;border-top:1px solid var(--line);margin:32px 0;}

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

.skip-link{
  position:absolute;left:12px;top:-64px;z-index:200;
  padding:10px 16px;background:var(--gold);color:var(--ink-deep);
  font-size:14px;font-weight:700;text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;color:var(--ink-deep);}

/* ---------- 容器与通用布局 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-w);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.section{padding:clamp(48px,7vw,96px) 0;border-top:1px solid var(--line);}
.section--tight{padding:clamp(30px,4vw,54px) 0;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:baseline;
  gap:10px 22px;margin-bottom:28px;
}
.section-title{margin:0;}
.section-note{margin:0;max-width:52ch;font-size:15px;color:var(--muted);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
}
.lede{max-width:68ch;font-size:18px;line-height:1.85;color:var(--paper);}
.prose{max-width:76ch;}
.prose p{margin:0 0 20px;line-height:1.85;}
.prose h2{font-size:24px;margin:36px 0 14px;}
.prose ul{color:var(--muted);}
.rule-gold{height:1px;border:0;background:linear-gradient(90deg,var(--gold),rgba(212,175,55,0) 70%);margin:0;}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,28px);}
.col-12{grid-column:span 12;}
.col-8{grid-column:span 8;}
.col-6{grid-column:span 6;}
.col-4{grid-column:span 4;}
.col-3{grid-column:span 3;}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:0 0 26px;}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);}
.breadcrumb-item{display:flex;align-items:center;gap:8px;margin:0;}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line);}
.breadcrumb-link{color:var(--muted);}
.breadcrumb-link:hover{color:var(--gold-lit);}
.breadcrumb-current{color:var(--gold);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;border:1px solid var(--gold);background:transparent;
  color:var(--gold);font-size:15px;font-weight:700;line-height:1;
  text-decoration:none;cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.btn:hover{background:var(--gold);color:var(--ink-deep);}
.btn--solid{background:var(--gold);color:var(--ink-deep);box-shadow:5px 5px 0 rgba(6,18,31,.85);}
.btn--solid:hover{background:var(--gold-lit);border-color:var(--gold-lit);box-shadow:5px 5px 0 rgba(6,18,31,.85);}
.btn--ghost{color:var(--gold-lit);border-color:var(--line);}
.btn--ghost:hover{background:var(--gold);border-color:var(--gold);color:var(--ink-deep);}
.btn--lime{border-color:var(--lime);color:var(--lime);}
.btn--lime:hover{background:var(--lime);color:var(--ink-deep);}
.btn--sm{padding:9px 13px;font-size:13px;}
.btn--block{width:100%;}

/* ---------- 头部命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(11,30,51,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(6px);
}
.header-rail{position:relative;border-top:2px solid var(--gold);}
.header-shell{
  display:flex;align-items:center;
  gap:clamp(12px,2vw,26px);
  min-height:var(--header-h);
  padding-top:8px;padding-bottom:10px;
  transition:min-height .22s var(--ease),padding .22s var(--ease);
}
.site-header.is-condensed .header-shell{min-height:52px;padding-top:4px;padding-bottom:6px;}
.site-header.is-condensed .brand-sub,
.site-header.is-condensed .header-status,
.site-header.is-condensed .tool-link{display:none;}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;color:var(--paper);text-decoration:none;}
.brand:hover{color:var(--paper);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:44px;padding:6px 8px;
  border:1px solid var(--gold);color:var(--gold);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.1em;
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.brand:hover .brand-mark{background:var(--gold);color:var(--ink-deep);}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:17px;font-weight:900;letter-spacing:.02em;}
.brand-sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.22em;color:var(--muted);}

.header-status{
  display:flex;align-items:center;gap:8px;margin:0;flex:0 0 auto;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--muted);white-space:nowrap;
}
.status-dot{width:6px;height:6px;border-radius:50%;background:var(--lime);box-shadow:0 0 0 3px rgba(183,243,74,.16);}
.status-code{color:var(--gold);}

.primary-nav{flex:1 1 auto;display:flex;justify-content:flex-end;}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;gap:2px;margin:0;padding:0;list-style:none;}
.nav-item{margin:0;}
.nav-link{
  display:inline-flex;align-items:baseline;gap:6px;
  padding:8px 10px;border-bottom:2px solid transparent;
  color:var(--muted);font-size:15px;font-weight:400;text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--line);transition:color .18s var(--ease);}
.nav-link:hover{color:var(--gold-lit);border-bottom-color:var(--gold);background:rgba(212,175,55,.06);}
.nav-link:hover .nav-index{color:var(--gold);}
.nav-link[aria-current="page"]{color:var(--gold);font-weight:700;border-bottom-color:var(--gold);background:rgba(212,175,55,.08);}
.nav-link[aria-current="page"] .nav-index{color:var(--gold-lit);}

.header-tools{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.tool-link{font-size:14px;color:var(--muted);text-decoration:none;border-bottom:1px dashed var(--line);padding-bottom:2px;}
.tool-link:hover{color:var(--gold-lit);border-bottom-color:var(--gold);}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 12px;border:1px solid var(--line);background:transparent;
  color:var(--paper);font-size:13px;cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-lit);}
.nav-toggle-bars{position:relative;display:block;width:16px;height:2px;background:var(--gold);transition:background-color .2s var(--ease);}
.nav-toggle-bars::before,
.nav-toggle-bars::after{content:"";position:absolute;left:0;width:16px;height:2px;background:var(--gold);transition:transform .2s var(--ease);}
.nav-toggle-bars::before{top:-5px;}
.nav-toggle-bars::after{top:5px;}
.site-header[data-open] .nav-toggle-bars{background:transparent;}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-5px) rotate(-45deg);}

.scroll-line{display:block;height:2px;width:0;background:linear-gradient(90deg,var(--gold),var(--lime));transition:width .1s linear;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:0;
  background:var(--ink-deep);
  border-top:1px solid var(--gold);
  color:var(--muted);
}
.footer-rail{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--line);}
.rail-node{
  flex:1 1 200px;display:flex;align-items:center;gap:10px;
  padding:14px clamp(16px,3vw,32px);
  border-right:1px solid var(--line);
  font-size:13px;letter-spacing:.06em;color:var(--muted);
}
.rail-node:last-child{border-right:0;}
.rail-index{font-family:var(--font-mono);font-style:normal;font-weight:700;color:var(--gold);}
.rail-name{color:var(--paper);}

.footer-shell{
  display:grid;
  grid-template-columns:1.25fr 1fr 1fr 1.3fr;
  gap:clamp(20px,3vw,44px);
  padding-top:clamp(34px,5vw,58px);
  padding-bottom:clamp(30px,4vw,52px);
}
.footer-mark{
  display:inline-flex;align-items:center;justify-content:center;
  padding:5px 8px;border:1px solid var(--gold);color:var(--gold);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.1em;
}
.footer-brand-name{margin:14px 0 4px;font-size:19px;font-weight:900;color:var(--paper);}
.footer-brand-line{margin:0 0 10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);}
.footer-brand-note{margin:0;max-width:30ch;font-size:14px;color:var(--muted);}

.footer-col-title{
  display:flex;align-items:center;gap:10px;
  margin:0 0 16px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}
.footer-col-title::after{content:"";flex:1 1 auto;height:1px;background:var(--line);}
.footer-list{margin:0;padding:0;list-style:none;}
.footer-list li{margin:0 0 10px;}
.footer-link{
  color:var(--muted);font-size:15px;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--gold-lit);border-bottom-color:var(--gold);}
.footer-note{margin:14px 0 0;max-width:34ch;font-size:13px;line-height:1.7;color:var(--muted);}

.contact-list{margin:0;padding:0;list-style:none;}
.contact-line{display:flex;gap:10px;margin:0 0 10px;font-size:14px;}
.contact-key{flex:0 0 68px;padding-top:2px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);}
.contact-val{font-family:var(--font-mono);font-size:13px;color:var(--paper);word-break:break-word;}

.footer-base{border-top:1px solid var(--line);background:rgba(6,18,31,.6);}
.footer-base-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;
  padding-top:16px;padding-bottom:16px;
}
.footer-copy{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);}

/* ---------- 专题研究板组件 ---------- */
.card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  padding:clamp(18px,2.2vw,26px);
  box-shadow:6px 6px 0 rgba(6,18,31,.55);
}
.card-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:10px;}
.card-title{margin:0;font-size:var(--fs-card);font-weight:700;color:var(--paper);}
.card-body{margin:0;font-size:16px;color:var(--muted);}
.card-meta{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted);}

.anchor-index{
  display:inline-flex;align-items:center;
  padding:2px 7px;border:1px solid var(--gold);color:var(--gold);
  font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.08em;
}
.mono-num{display:block;font-family:var(--font-mono);font-size:var(--fs-num);font-weight:700;line-height:1;color:var(--lime);}
.mono-num--gold{color:var(--gold);}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 9px;border:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
}
.tag--gold{color:var(--gold);border-color:var(--gold);}
.tag--lime{color:var(--lime);border-color:var(--lime);}
.tag--amber{color:var(--amber);border-color:var(--amber);}

.accordion{border-top:1px solid var(--line);}
.accordion-item{border-bottom:1px solid var(--line);}
.accordion-trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:16px 4px;border:0;background:none;
  color:var(--paper);font-size:17px;font-weight:700;line-height:1.6;text-align:left;cursor:pointer;
  transition:color .18s var(--ease);
}
.accordion-trigger::after{content:"+";font-family:var(--font-mono);font-size:18px;color:var(--gold);}
.accordion-trigger[aria-expanded="true"]::after{content:"–";}
.accordion-trigger:hover{color:var(--gold-lit);}
.accordion-panel{padding:0 4px 18px;color:var(--muted);font-size:16px;}
.accordion-panel[hidden]{display:none;}

.track{
  display:flex;gap:16px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:8px 0 20px;
  scrollbar-color:var(--gold) transparent;
}
.track-item{flex:0 0 min(320px,80vw);scroll-snap-align:start;}

/* ---------- 图片容器（页面阶段放置图片） ---------- */
.media{
  position:relative;display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background-color:var(--panel);
  background-image:
    repeating-linear-gradient(135deg, rgba(44,74,104,.30) 0 2px, rgba(6,18,31,0) 2px 12px);
}
.media img{width:100%;height:100%;object-fit:cover;}
.media--16x9{aspect-ratio:16 / 9;}
.media--4x3{aspect-ratio:4 / 3;}
.media--1x1{aspect-ratio:1 / 1;}
.media--21x9{aspect-ratio:21 / 9;}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);}

/* ---------- 动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .header-status{display:none;}
  .nav-link{font-size:14px;padding:8px 8px;}
}
@media (max-width:900px){
  .grid{grid-template-columns:repeat(6,minmax(0,1fr));}
  .col-12,.col-8,.col-6,.col-4{grid-column:span 6;}
  .col-3{grid-column:span 3;}
  .footer-shell{grid-template-columns:1fr 1fr;}
}
@media (max-width:860px){
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    position:fixed;inset:0;z-index:70;
    display:flex;flex-direction:column;
    padding:104px var(--gutter) 48px;
    background:rgba(6,18,31,.98);
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .site-header[data-open] .primary-nav,
  .primary-nav[data-open]{opacity:1;visibility:visible;transform:none;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-item{border-bottom:1px solid var(--line);}
  .nav-link{
    justify-content:space-between;width:100%;
    padding:18px 4px;border-bottom:0;font-size:20px;font-weight:700;color:var(--paper);
  }
  .nav-link:hover{background:none;}
  .nav-index{font-size:13px;color:var(--gold);}
  .nav-link[aria-current="page"]{background:none;padding-left:12px;}
  .nav-toggle{position:relative;z-index:80;}
}
@media (max-width:700px){
  .brand-sub{display:none;}
  .tool-link{display:none;}
  .footer-shell{grid-template-columns:1fr;}
  .rail-node{flex:1 1 50%;border-bottom:1px solid var(--line);}
  .footer-base-inner{flex-direction:column;}
  .col-3{grid-column:span 6;}
}

/* ---------- 无障碍动效降级 ---------- */
@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 !important;transform:none !important;}
  .scroll-line{transition:none;}
}