/* 银河娱乐汇 · 共享样式 /assets/site.css */
*,
*::before,
*::after{box-sizing:border-box}

html{
  background-color:#070B1A;
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:132px;
}

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote,
dl,
dd{margin:0}

ul[class],
ol[class]{list-style:none;padding:0}

img,
svg{display:block;max-width:100%}

a{color:inherit;text-decoration:none}

button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

:root{
  --ink:#070B1A;
  --galaxy:#12264D;
  --violet:#6D5BD0;
  --silver:#C7D3E8;
  --amber:#F2B544;
  --paper:#F2E9D8;
  --mist:#8A97AD;
  --white:#F5F7FB;
  --graphite:#1B2436;
  --teal:#0E3B4A;

  --line:rgba(199,211,232,.16);
  --line-strong:rgba(199,211,232,.34);
  --glass:rgba(18,38,77,.52);
  --glass-deep:rgba(7,11,26,.9);
  --amber-soft:rgba(242,181,68,.14);

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

  --gutter:clamp(18px,4vw,56px);
  --maxw:1280px;
  --radius:14px;
  --radius-sm:6px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:200ms;
}

body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--white);
  background-color:var(--ink);
  background-image:
    radial-gradient(circle at 14% 6%,rgba(109,91,208,.24),transparent 44%),
    radial-gradient(circle at 88% 2%,rgba(14,59,74,.55),transparent 42%),
    radial-gradient(circle at 72% 92%,rgba(18,38,77,.6),transparent 56%),
    repeating-linear-gradient(to right,rgba(199,211,232,.05) 0 1px,transparent 1px 88px),
    repeating-linear-gradient(to bottom,rgba(199,211,232,.05) 0 1px,transparent 1px 88px);
  background-repeat:no-repeat;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}

h1,
h2,
h3,
h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.22;
  letter-spacing:-.02em;
  color:var(--white);
}

p{max-width:44em}

:focus-visible{
  outline:2px solid var(--amber);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 通用容器 ---------- */
.container,
.container--narrow{
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
}

.container--narrow{width:min(940px,calc(100% - 2 * var(--gutter)))}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-80px;
  z-index:200;
  display:inline-block;
  padding:10px 18px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--ink);
  background:var(--amber);
  border-radius:var(--radius-sm);
  transition:top var(--dur) var(--ease);
}

.skip-link:focus{top:10px}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(7,11,26,.84);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  backdrop-filter:blur(18px) saturate(140%);
  border-bottom:1px solid var(--line-strong);
  transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
}

.site-header[data-scrolled]{
  background:rgba(7,11,26,.94);
  box-shadow:0 18px 40px rgba(0,0,0,.45);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(199,211,232,.08);
  pointer-events:none;
}

.scroll-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet),var(--amber));
  transition:transform .12s linear;
}

.command-bar{
  border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(18,38,77,.9),rgba(7,11,26,.35));
}

.command-bar__inner{
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 18px;
  padding-block:6px;
}

.command-bar__status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  max-width:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--silver);
}

.status-dot{
  width:6px;
  height:6px;
  flex:none;
  background:var(--amber);
  box-shadow:0 0 10px rgba(242,181,68,.85);
}

.command-bar__actions{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
}

.quick-link{
  display:inline-block;
  padding:3px 11px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--silver);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}

.quick-link:hover,
.quick-link:focus-visible{
  color:var(--white);
  border-color:rgba(109,91,208,.8);
  background:rgba(109,91,208,.2);
}

.header-main{position:relative}

.header-main__inner{
  position:relative;
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-block:clamp(12px,1.6vw,18px);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
}

.brand__mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  padding:4px;
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  line-height:1.1;
  letter-spacing:.02em;
  text-align:center;
  color:var(--amber);
  border:1px solid rgba(242,181,68,.55);
  border-radius:var(--radius-sm);
  background:var(--amber-soft);
  box-shadow:inset 0 0 0 1px rgba(7,11,26,.5);
}

.brand__text{display:grid;gap:2px}

.brand__name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--white);
}

.brand__descriptor{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--mist);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--silver);
  border:1px solid var(--line-strong);
  border-radius:var(--radius-sm);
  background:rgba(199,211,232,.05);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}

.nav-toggle__bars{
  display:block;
  width:16px;
  height:2px;
  background:var(--amber);
  box-shadow:0 5px 0 var(--amber),0 -5px 0 var(--amber);
  transition:transform var(--dur) var(--ease);
}

.nav-toggle[aria-expanded="true"]{
  color:var(--amber);
  border-color:rgba(242,181,68,.7);
  background:var(--amber-soft);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars{transform:scaleX(.7)}

.site-nav{display:block}

.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
}

.site-nav__link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:8px 11px;
  font-size:14px;
  color:var(--silver);
  border-radius:var(--radius-sm);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}

.site-nav__index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--mist);
  transition:color var(--dur) var(--ease);
}

.site-nav__link:hover,
.site-nav__link:focus-visible{
  color:var(--white);
  background:rgba(199,211,232,.08);
}

.site-nav__link:hover .site-nav__index{color:var(--amber)}

.site-nav__link[aria-current="page"]{
  color:var(--white);
  background:var(--amber-soft);
  box-shadow:inset 0 -2px 0 var(--amber);
}

.site-nav__link[aria-current="page"] .site-nav__index{color:var(--amber)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  background:linear-gradient(180deg,rgba(18,38,77,.92),rgba(7,11,26,.99));
  border-top:1px solid var(--line-strong);
}

.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--amber),transparent);
  opacity:.65;
}

.footer-grid{
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,.85fr));
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px) clamp(24px,3vw,36px);
}

.footer-brand{display:grid;gap:14px;align-content:start}

.footer-brand__name{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:700;
  letter-spacing:.03em;
  color:var(--white);
}

.footer-brand__summary{
  max-width:34em;
  font-size:14px;
  line-height:1.8;
  color:var(--silver);
}

.footer-archive{
  display:grid;
  gap:6px;
  padding-top:10px;
  border-top:1px solid var(--line);
}

.footer-archive__line{
  display:flex;
  align-items:baseline;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}

.footer-archive__line .mono{color:var(--amber)}

.footer-col{display:grid;gap:10px;align-content:start}

.footer-col__title{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.16em;
  color:var(--mist);
}

.footer-col__title::before{
  content:"";
  width:6px;
  height:6px;
  flex:none;
  background:var(--amber);
}

.footer-col__list{display:grid;gap:2px}

.footer-link{
  position:relative;
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--silver);
  transition:color var(--dur) var(--ease);
}

.footer-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:1px;
  width:0;
  height:1px;
  background:var(--amber);
  transition:width var(--dur) var(--ease);
}

.footer-link:hover,
.footer-link:focus-visible{color:var(--white)}

.footer-link:hover::after,
.footer-link:focus-visible::after{width:100%}

.footer-contact{
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:16px 32px;
  padding-block:clamp(22px,3vw,34px);
  border-top:1px solid var(--line);
}

.footer-contact__title{
  grid-column:1 / -1;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.16em;
  color:var(--mist);
}

.footer-contact__row{display:grid;gap:2px;align-content:start}

.footer-contact__label{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--mist);
}

.footer-contact__value{
  font-size:14px;
  line-height:1.6;
  color:var(--white);
  word-break:break-word;
}

.footer-contact__note{
  grid-column:1 / -1;
  max-width:60em;
  padding-left:12px;
  font-size:13px;
  line-height:1.75;
  color:var(--mist);
  border-left:2px solid rgba(242,181,68,.7);
}

.footer-meta{
  width:min(var(--maxw),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:18px clamp(20px,3vw,30px);
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mist);
}

.footer-meta__copy,
.footer-meta__icp{max-width:none}

.footer-meta__copy{display:inline-flex;gap:6px;align-items:baseline}

/* ---------- 返回顶部 ---------- */
.back-to-top{
  position:fixed;
  right:clamp(14px,3vw,32px);
  bottom:clamp(14px,3vw,32px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 15px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:#12100A;
  background:var(--amber);
  border-radius:999px;
  box-shadow:0 14px 32px rgba(242,181,68,.26);
  visibility:hidden;
  opacity:0;
  transform:translateY(12px);
  pointer-events:none;
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) linear;
}

.back-to-top[data-visible]{
  visibility:visible;
  opacity:1;
  transform:none;
  pointer-events:auto;
}

/* ---------- 章节与排版组件 ---------- */
.section{padding-block:clamp(44px,7vw,84px)}

.section-head{
  display:grid;
  gap:14px;
  max-width:56ch;
  margin-bottom:clamp(24px,3.4vw,40px);
}

.section__index{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--amber);
}

.section__index::after{
  content:"";
  width:42px;
  height:1px;
  background:linear-gradient(90deg,rgba(242,181,68,.9),transparent);
}

.section__title{
  font-size:clamp(26px,3.6vw,38px);
  letter-spacing:-.02em;
}

.section__lead{
  max-width:42em;
  font-size:16px;
  line-height:1.8;
  color:var(--silver);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--mist);
}

.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:var(--amber);
}

.mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--amber);
  background:var(--amber-soft);
  border:1px solid rgba(242,181,68,.42);
  border-radius:4px;
}

.hairline{
  height:1px;
  margin-block:clamp(24px,4vw,40px);
  border:0;
  background:linear-gradient(90deg,var(--line-strong),transparent);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}

.grid--aside{grid-template-columns:minmax(0,1fr)}

.grid--thirds{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ---------- 面板 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:var(--glass);
  border:1px solid var(--line);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}

.panel--solid{
  background:var(--graphite);
  border-color:rgba(199,211,232,.12);
}

.panel--paper{
  background:var(--paper);
  border-color:rgba(27,36,54,.2);
  color:#161B26;
}

.panel__label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--amber);
}

.panel__label::before{
  content:"";
  width:6px;
  height:6px;
  flex:none;
  background:currentColor;
}

.panel__title{
  margin-top:12px;
  font-family:var(--font-display);
  font-size:clamp(19px,2.4vw,25px);
  line-height:1.32;
  letter-spacing:-.01em;
}

.panel__text{
  margin-top:10px;
  max-width:40em;
  font-size:15px;
  line-height:1.78;
  color:var(--silver);
}

.panel--solid .panel__text{color:var(--silver)}

.panel--paper .panel__text{color:#3A404E}

.panel--paper .panel__label{color:#8A5A05}

.panel--paper .panel__title{color:#111726}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  line-height:1;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}

.btn--gold{
  color:#12100A;
  background:var(--amber);
}

.btn--gold:hover,
.btn--gold:focus-visible{
  background:#FFC961;
  transform:translateY(-1px);
}

.btn--ghost{
  color:var(--silver);
  background:rgba(199,211,232,.05);
  border-color:var(--line-strong);
}

.btn--ghost:hover,
.btn--ghost:focus-visible{
  color:var(--white);
  border-color:rgba(109,91,208,.85);
  background:rgba(109,91,208,.18);
}

.btn--sm{padding:8px 14px;font-size:13px}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
}

.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}

.breadcrumb__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
}

.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:rgba(199,211,232,.32);
}

.breadcrumb__link{
  color:var(--silver);
  transition:color var(--dur) var(--ease);
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible{color:var(--amber)}

.breadcrumb__current{color:var(--amber)}

/* ---------- 媒体容器 ---------- */
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  background:
    radial-gradient(circle at 30% 20%,rgba(109,91,208,.35),transparent 55%),
    linear-gradient(160deg,rgba(18,38,77,.95),rgba(7,11,26,.98));
}

.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(to right,rgba(199,211,232,.12) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(to bottom,rgba(199,211,232,.12) 0 1px,transparent 1px 40px);
  opacity:.5;
}

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

.media-frame__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:12px 14px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--silver);
  background:linear-gradient(0deg,rgba(7,11,26,.94),transparent);
}

.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}

/* ---------- 章节目录高亮（页面阶段提供 data-toc） ---------- */
[data-toc] a[href^="#"]{
  display:block;
  padding:6px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--mist);
  transition:color var(--dur) var(--ease);
}

[data-toc] a[href^="#"]:hover,
[data-toc] a[href^="#"]:focus-visible{color:var(--silver)}

[data-toc] a[data-current]{
  color:var(--amber);
  box-shadow:inset 2px 0 0 var(--amber);
  padding-left:10px;
}

/* ---------- 响应式 ---------- */
@media (min-width:760px){
  .grid--aside{grid-template-columns:minmax(160px,.3fr) minmax(0,1fr)}
}

@media (max-width:960px){
  html{scroll-padding-top:100px}

  .nav-toggle{display:inline-flex}

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    max-height:calc(100vh - 140px);
    overflow-y:auto;
    padding:10px 0 18px;
    background:var(--glass-deep);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line-strong);
    box-shadow:0 28px 52px rgba(0,0,0,.55);
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
  }

  .site-nav[data-open]{display:block}

  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}

  .site-nav__item{border-bottom:1px solid var(--line)}

  .site-nav__item:last-child{border-bottom:0}

  .site-nav__link{
    justify-content:flex-start;
    padding:13px 4px;
    font-size:15px;
    border-radius:0;
  }

  .site-nav__link[aria-current="page"]{
    background:transparent;
    box-shadow:inset 3px 0 0 var(--amber);
    padding-left:12px;
  }

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:620px){
  .brand__mark{width:38px;height:38px;font-size:12px}
  .brand__name{font-size:17px}
  .brand__descriptor{letter-spacing:.1em;font-size:9px}
  .command-bar__status{font-size:10px;letter-spacing:.08em}
  .quick-link{font-size:10px;padding:3px 8px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-meta{font-size:10px;letter-spacing:.06em}
  .back-to-top{font-size:10px;padding:9px 13px}
}

/* ---------- 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;
    scroll-behavior:auto !important;
  }
}