/* =========================================================
   大发快三彩讯 — 共享外壳样式 /assets/site.css
   靛青山势底 · 苗银蓝轨道 · 铜金碑刻编号
   ========================================================= */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
table{border-collapse:collapse;width:100%}

:root{
  --indigo:#12263A;
  --silver-blue:#2E6F8E;
  --mist:#F4F7F8;
  --warm:#FFF9F0;
  --grey:#7C8C8F;
  --red:#E63946;
  --brass:#C8963E;
  --aqua:#2FD4C2;
  --ink:#0B1620;
  --silver:#C9D6D8;

  --rail-w:76px;
  --topbar-h:56px;
  --shell-max:1320px;
  --gutter:clamp(16px,4vw,56px);

  --line-soft:rgba(201,214,216,.16);
  --line-brass:rgba(200,150,62,.32);
  --radius-organic:14px 3px 14px 3px;

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

/* ---------- 基础排版 ---------- */
body{
  margin:0;
  min-height:100vh;
  padding-top:var(--topbar-h);
  padding-left:var(--rail-w);
  background-color:var(--indigo);
  background-image:
    repeating-radial-gradient(ellipse 130% 95% at 10% -8%,transparent 0 30px,rgba(200,150,62,.045) 30px 31px),
    repeating-radial-gradient(ellipse 90% 70% at 92% 108%,transparent 0 38px,rgba(47,212,194,.035) 38px 39px);
  background-attachment:fixed;
  color:var(--mist);
  font-family:var(--font-body);
  font-size:clamp(15px,1.05vw,17px);
  line-height:1.8;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.16;
  letter-spacing:-.005em;
  color:var(--warm);
  text-wrap:balance;
}
h1{font-size:clamp(2.6rem,6vw,5.6rem);line-height:1.04;letter-spacing:-.02em}
h2{font-size:clamp(1.6rem,3vw,2.6rem)}
h3{font-size:clamp(1.15rem,1.6vw,1.4rem)}
h4{font-size:1.05rem}

p{text-wrap:pretty}
strong{color:var(--warm);font-weight:700}
code,kbd,samp,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}

/* ---------- 可访问性 ---------- */
:focus-visible{
  outline:2px solid var(--aqua);
  outline-offset:3px;
  border-radius:3px;
}
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;border:0;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);
  white-space:nowrap;
}
.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:900;
  transform:translateY(-180%);
  padding:10px 20px;
  background:var(--warm);
  color:var(--ink);
  font-size:14px;font-weight:700;letter-spacing:.06em;
  text-decoration:none;
  border-radius:var(--radius-organic);
  box-shadow:0 10px 30px rgba(11,22,32,.45);
  transition:transform .22s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 顶部固定条 ---------- */
.site-header{position:relative;z-index:500}

.topbar{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--topbar-h);
  padding-left:var(--rail-w);
  display:flex;align-items:center;
  z-index:200;
  background:linear-gradient(90deg,rgba(11,22,32,.97),rgba(16,34,51,.94));
  border-bottom:1px solid var(--line-brass);
  backdrop-filter:blur(10px);
}
.topbar::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,var(--brass),rgba(47,212,194,.5),transparent 70%);
  opacity:.6;pointer-events:none;
}
.topbar__inner{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,24px);
}
.topbar__brand{
  display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;
  color:var(--warm);
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(15px,1.35vw,18px);
  letter-spacing:.06em;
  white-space:nowrap;
}
.brand__mark{
  flex:0 0 auto;
  width:14px;height:14px;
  background:linear-gradient(135deg,var(--brass),#EBCB8F);
  border-radius:6px 2px 6px 2px;
  box-shadow:0 0 0 1px rgba(200,150,62,.55),0 0 18px rgba(200,150,62,.4);
  transition:transform .3s ease;
}
.topbar__brand:hover .brand__mark{transform:rotate(45deg)}
.brand__name{display:inline-block}

.topbar__hint{
  margin-left:auto;
  font-size:12px;letter-spacing:.14em;
  color:var(--grey);
  white-space:nowrap;
}
.topbar__lang{
  font-size:12px;letter-spacing:.12em;
  color:var(--silver);
  padding-left:14px;
  border-left:1px solid rgba(201,214,216,.22);
  white-space:nowrap;
}
.topbar__utility{
  margin-left:auto;
  display:flex;align-items:center;
  gap:10px;
}

.topbar__link{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;
  font-size:13px;font-weight:600;letter-spacing:.1em;
  text-decoration:none;
  color:#EBCB8F;
  border:1px solid rgba(200,150,62,.5);
  border-radius:var(--radius-organic);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.topbar__link:hover{
  background:rgba(200,150,62,.16);
  color:var(--warm);
  border-color:var(--brass);
}

.topbar__toggle{
  display:inline-flex;align-items:center;gap:9px;
  padding:8px 16px;
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--warm);
  background:var(--silver-blue);
  border:1px solid rgba(201,214,216,.3);
  border-radius:3px 14px 3px 14px;
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.topbar__toggle:hover{background:#35799B}
.topbar__toggle[aria-expanded="true"]{
  background:var(--brass);
  color:var(--ink);
  border-color:var(--brass);
}
.toggle__bars{
  display:inline-block;
  width:14px;height:2px;
  background:currentColor;
  box-shadow:0 -5px 0 currentColor,0 5px 0 currentColor;
}

/* ---------- 侧边轨道导航 ---------- */
.rail{
  position:fixed;
  top:var(--topbar-h);left:0;bottom:0;
  width:var(--rail-w);
  z-index:150;
  display:flex;flex-direction:column;
  padding:16px 0 22px;
  background:linear-gradient(180deg,rgba(46,111,142,.3) 0%,rgba(18,38,58,.94) 46%,rgba(11,22,32,.98) 100%);
  border-right:1px solid var(--line-brass);
  overflow-y:auto;overflow-x:hidden;
  scrollbar-width:none;
  transition:width .34s cubic-bezier(.22,.7,.3,1),box-shadow .34s ease,transform .34s cubic-bezier(.22,.7,.3,1);
}
.rail::-webkit-scrollbar{width:0;height:0}

.rail__cap{
  margin:0 auto 14px;
  writing-mode:vertical-rl;
  font-size:11px;letter-spacing:.42em;
  color:var(--brass);
  opacity:.85;
  text-align:center;
}
.rail__list{
  display:flex;flex-direction:column;gap:6px;
  padding:0 6px;
}
.rail__item{display:block}
.rail__link{
  position:relative;
  display:flex;flex-direction:column;align-items:center;
  gap:8px;
  padding:12px 4px;
  color:var(--silver);
  text-decoration:none;
  border:1px solid transparent;
  border-radius:12px 3px 12px 3px;
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.rail__num{
  font-family:var(--font-mono);
  font-size:10px;font-weight:700;letter-spacing:.06em;
  color:rgba(200,150,62,.78);
  transition:color .2s ease;
}
.rail__label{
  writing-mode:vertical-rl;
  font-size:12.5px;
  letter-spacing:.18em;
  line-height:1.15;
  white-space:nowrap;
}
.rail__link:hover{
  color:var(--warm);
  background:rgba(46,111,142,.38);
  border-color:rgba(201,214,216,.18);
}
.rail__link[aria-current="page"]{
  color:var(--warm);
  background:linear-gradient(180deg,rgba(200,150,62,.26),rgba(230,57,70,.14));
  border-color:rgba(200,150,62,.6);
}
.rail__link[aria-current="page"] .rail__num{color:var(--red)}
.rail__link[aria-current="page"]::before{
  content:"";
  position:absolute;left:-6px;top:50%;
  transform:translateY(-50%);
  width:3px;height:22px;
  border-radius:2px;
  background:var(--red);
}

/* 轨道面板展开（桌面） */
@media (min-width:1024px){
  .rail[data-open="true"]{
    width:268px;
    box-shadow:16px 0 48px rgba(11,22,32,.55);
  }
  .rail[data-open="true"] .rail__cap{
    writing-mode:horizontal-tb;
    letter-spacing:.34em;
    margin:0 0 14px;
    padding-left:20px;
    text-align:left;
  }
  .rail[data-open="true"] .rail__list{padding:0 10px}
  .rail[data-open="true"] .rail__link{
    flex-direction:row-reverse;
    justify-content:flex-end;
    align-items:center;
    gap:14px;
    padding:13px 18px;
  }
  .rail[data-open="true"] .rail__label{
    writing-mode:horizontal-tb;
    font-size:14px;
    letter-spacing:.1em;
  }
  .rail[data-open="true"] .rail__num{font-size:11px}
  .rail[data-open="true"] .rail__link[aria-current="page"]::before{left:0}
}

/* ---------- 遮罩 ---------- */
.nav-scrim{
  position:fixed;
  top:var(--topbar-h);left:0;right:0;bottom:0;
  z-index:140;
  background:rgba(11,22,32,.66);
  backdrop-filter:blur(3px);
}
.nav-scrim[hidden]{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,132px);
  color:var(--silver);
  background-color:#0F2233;
  background-image:
    repeating-radial-gradient(ellipse 115% 85% at 88% -4%,transparent 0 30px,rgba(200,150,62,.07) 30px 31px),
    linear-gradient(180deg,#0F2233 0%,var(--ink) 82%);
  border-top:1px solid var(--line-brass);
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--brass),rgba(47,212,194,.55),transparent 78%);
  opacity:.75;pointer-events:none;
}
.footer__grid{
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(38px,6vw,68px) var(--gutter) clamp(24px,3vw,40px);
  display:grid;
  grid-template-columns:1.5fr .9fr .9fr 1.3fr;
  gap:clamp(24px,3vw,44px);
  align-items:start;
}
.footer__brand{max-width:36ch}
.footer__logo{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(20px,2.3vw,26px);
  letter-spacing:.06em;
  color:var(--warm);
  text-decoration:none;
}
.footer__logo::before{
  content:"";
  width:12px;height:12px;
  background:var(--brass);
  border-radius:5px 1px 5px 1px;
  box-shadow:0 0 0 1px rgba(200,150,62,.55);
}
.footer__tagline{
  margin-top:14px;
  font-size:14px;line-height:1.85;
  color:var(--silver);
}
.footer__note{
  margin-top:12px;
  font-size:12.5px;line-height:1.8;
  color:var(--grey);
}
.footer__col{display:block}
.footer__col-title{
  font-family:var(--font-body);
  font-size:12px;font-weight:700;
  letter-spacing:.24em;
  color:var(--brass);
  margin-bottom:16px;
}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__link{
  display:inline-block;
  font-size:14px;
  text-decoration:none;
  color:var(--silver);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.footer__link:hover{
  color:var(--warm);
  border-bottom-color:rgba(200,150,62,.65);
}
.footer__col--contact{
  padding-left:clamp(0px,2vw,26px);
  border-left:1px solid rgba(201,214,216,.14);
}
.footer__contact-list{display:flex;flex-direction:column;gap:12px}
.footer__contact-item{display:grid;gap:2px}
.footer__contact-label{
  font-size:11px;letter-spacing:.2em;
  color:var(--grey);
}
.footer__contact-value{
  font-size:13.5px;
  color:var(--mist);
  word-break:break-word;
}
.footer__cta{margin-top:18px}
.footer__bar{
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:16px var(--gutter) 28px;
  border-top:1px solid rgba(201,214,216,.14);
  display:flex;flex-wrap:wrap;
  gap:10px 26px;
  justify-content:space-between;align-items:center;
  font-size:12.5px;
  color:var(--grey);
}
.footer__legal{
  display:flex;flex-wrap:wrap;
  gap:6px 16px;
  align-items:center;
}
.footer__legal a{
  color:var(--silver);
  text-decoration:none;
  border-bottom:1px solid rgba(200,150,62,.38);
}
.footer__legal a:hover{color:var(--warm)}
.footer__icp{
  font-family:var(--font-mono);
  letter-spacing:.06em;
  color:var(--grey);
}

/* ---------- 通用容器与网格 ---------- */
.container{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}

/* ---------- 长文阅读区 ---------- */
.prose{
  max-width:74ch;
  font-size:clamp(16px,1.1vw,17.5px);
  line-height:1.9;
  color:#DCE6E9;
}
.prose>*+*{margin-top:1.05em}
.prose h2{margin-top:1.9em;font-size:clamp(1.4rem,2.4vw,1.9rem)}
.prose h3{
  margin-top:1.6em;
  font-family:var(--font-body);
  font-size:clamp(1.05rem,1.7vw,1.28rem);
  font-weight:700;
  letter-spacing:.02em;
  color:var(--brass);
}
.prose ul{list-style:square}
.prose ul,.prose ol{padding-left:1.3em}
.prose li+li{margin-top:.45em}
.prose a{
  color:var(--aqua);
  text-decoration:underline;
  text-underline-offset:3px;
}
.prose blockquote{
  border-left:2px solid var(--brass);
  padding-left:1.1em;
  color:var(--silver);
}

/* ---------- 章节头与标签 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;font-weight:600;
  letter-spacing:.26em;
  color:var(--brass);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:var(--brass);
}
.section-head{
  display:flex;align-items:baseline;
  gap:clamp(12px,2vw,24px);
  padding-bottom:14px;
  margin-bottom:clamp(20px,3vw,34px);
  border-bottom:1px solid var(--line-soft);
}
.section-head__index{
  font-family:var(--font-mono);
  font-size:clamp(26px,4vw,44px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--brass);
}
@supports (-webkit-text-stroke:1px red){
  .section-head__index{
    color:transparent;
    -webkit-text-stroke:1px rgba(200,150,62,.78);
  }
}
.section-head__title{
  font-size:clamp(20px,2.6vw,30px);
  margin:0;
}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  font-size:11.5px;letter-spacing:.14em;
  color:var(--silver);
  border:1px solid rgba(201,214,216,.3);
  border-radius:9px 2px 9px 2px;
}
.tag--red{background:var(--red);border-color:var(--red);color:#fff}
.tag--brass{background:rgba(200,150,62,.16);border-color:rgba(200,150,62,.62);color:#EBCB8F}

.rule-line{
  border:0;
  border-top:1px solid var(--line-soft);
  margin:clamp(20px,3vw,32px) 0;
}
.note{
  font-size:13px;
  line-height:1.75;
  color:var(--grey);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;
  font-family:var(--font-body);
  font-size:14px;font-weight:700;
  letter-spacing:.09em;
  text-decoration:none;
  border:1px solid transparent;
  border-radius:var(--radius-organic);
  cursor:pointer;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--red);color:#fff;border-color:var(--red)}
.btn--primary:hover{background:#F04B57;border-color:#F04B57}
.btn--brass{background:var(--brass);color:var(--ink);border-color:var(--brass)}
.btn--brass:hover{background:#DBA94C;border-color:#DBA94C}
.btn--ghost{
  background:rgba(46,111,142,.18);
  color:var(--warm);
  border-color:rgba(201,214,216,.34);
}
.btn--ghost:hover{
  background:rgba(46,111,142,.42);
  border-color:var(--brass);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:12.5px;letter-spacing:.06em;color:var(--grey)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{text-decoration:none;color:var(--silver)}
.breadcrumb__link:hover{color:var(--brass)}
.breadcrumb__sep{color:rgba(200,150,62,.6)}
.breadcrumb__current{color:var(--warm)}

/* ---------- 媒体容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  background:linear-gradient(150deg,rgba(46,111,142,.4),rgba(18,38,58,.92));
  border:1px solid rgba(201,214,216,.16);
  border-radius:20px 4px 20px 4px;
}
.media-frame img,
.media-frame svg,
.media-frame picture,
.media-frame picture img{
  width:100%;height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-radial-gradient(ellipse 110% 82% at 78% 6%,transparent 0 26px,rgba(200,150,62,.18) 26px 27px);
  mix-blend-mode:screen;
  pointer-events:none;
}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--wide{aspect-ratio:21/9}

/* ---------- 目录跟随 ---------- */
[data-spy-link]{
  display:block;
  padding:6px 0 6px 14px;
  font-size:13.5px;
  color:var(--grey);
  text-decoration:none;
  border-left:2px solid rgba(201,214,216,.2);
  transition:color .2s ease,border-color .2s ease;
}
[data-spy-link]:hover{color:var(--silver)}
[data-spy-link].is-current{
  color:var(--warm);
  border-left-color:var(--red);
  font-weight:600;
}

/* ---------- 脚本注入控件 ---------- */
.scroll-progress{
  position:fixed;
  top:var(--topbar-h);left:0;right:0;
  height:2px;
  z-index:210;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--aqua),var(--brass));
  pointer-events:none;
}
.to-top{
  position:fixed;
  right:clamp(14px,3vw,32px);
  bottom:clamp(14px,3vw,32px);
  z-index:210;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;
  font-family:var(--font-body);
  font-size:13px;font-weight:600;letter-spacing:.1em;
  color:var(--warm);
  background:rgba(11,22,32,.94);
  border:1px solid rgba(200,150,62,.5);
  border-radius:var(--radius-organic);
  cursor:pointer;
  opacity:0;visibility:hidden;
  transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease;
}
.to-top::before{
  content:"\2191";
  font-family:var(--font-mono);
  color:var(--aqua);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .topbar__hint{display:none}
}

@media (max-width:1023px){
  :root{--topbar-h:60px}
  body{padding-left:0}
  .topbar{padding-left:0}
  .topbar__lang{display:none}
  .topbar__utility{margin-left:auto}

  .rail{
    width:min(86vw,320px);
    transform:translateX(-100%);
    background:linear-gradient(180deg,#16334B 0%,var(--ink) 62%);
    box-shadow:22px 0 64px rgba(0,0,0,.55);
    padding:18px 0 30px;
  }
  .rail[data-open="true"]{transform:translateX(0)}
  .rail__cap{
    writing-mode:horizontal-tb;
    letter-spacing:.34em;
    margin:0 0 14px;
    padding-left:22px;
    text-align:left;
  }
  .rail__list{gap:0;padding:0}
  .rail__link{
    flex-direction:row-reverse;
    justify-content:flex-end;
    align-items:center;
    gap:14px;
    padding:16px 22px;
    border:0;
    border-radius:0;
    border-bottom:1px solid rgba(201,214,216,.1);
  }
  .rail__label{
    writing-mode:horizontal-tb;
    font-size:15px;
    letter-spacing:.1em;
  }
  .rail__num{font-size:11px}
  .rail__link[aria-current="page"]::before{
    left:0;top:0;
    width:3px;height:100%;
    transform:none;
    border-radius:0;
  }
  html.is-nav-open{overflow:hidden}

  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__col--contact{
    grid-column:1/-1;
    padding-left:0;
    border-left:0;
    border-top:1px solid rgba(201,214,216,.14);
    padding-top:clamp(18px,3vw,26px);
  }
}

@media (max-width:899px){
  .grid12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

@media (max-width:640px){
  .topbar__inner{gap:10px}
  .topbar__link,.topbar__toggle{padding:7px 12px;font-size:12px;letter-spacing:.06em}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__bar{flex-direction:column;align-items:flex-start;gap:8px}
  .grid12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .to-top{font-size:12px;padding:9px 13px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms!important;
    animation-iteration-count:1!important;
    transition-duration:.01ms!important;
  }
  .rail,.rail__link,.btn,.to-top,.scroll-progress{transition:none!important}
}