/* ============================================================
   PG娱乐主站 共享样式表 /assets/site.css
   深墨蓝画布 · 玻璃层与实色层并置 · 极简文字建筑
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h,72px) + 1.5rem);
}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0;}
ul,ol{list-style:none;padding:0;}
img,picture,svg,video,canvas{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;padding:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 2. 变量 ---------- */
:root{
  --ink-950:#050817;
  --ink-900:#070B1C;
  --ink-800:#0A1024;
  --glass:#101A3A;

  --violet:#7C3AED;
  --cyan:#22D3EE;
  --amber:#F59E0B;
  --magenta:#EC4899;

  --text:#F8FAFC;
  --text-dim:#C7D2FE;
  --text-soft:rgba(199,210,254,.72);
  --line:#2A3A6A;

  --ok:#34D399;
  --warn:#FB7185;

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

  --wrap:1200px;
  --header-h:72px;
  --gutter:clamp(1.15rem,4vw,3rem);
  --radius:14px;
  --radius-sm:10px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

@media (max-width:600px){
  :root{--header-h:64px;}
}

/* ---------- 3. 基础排版 ---------- */
body{
  margin:0;
  min-height:100vh;
  background:var(--ink-950);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(58rem 38rem at 12% -12%, rgba(124,58,237,.22), transparent 62%),
    radial-gradient(46rem 32rem at 96% 4%, rgba(34,211,238,.14), transparent 64%),
    radial-gradient(40rem 28rem at 72% 104%, rgba(236,72,153,.10), transparent 66%);
}
#main-content{
  position:relative;
  z-index:1;
  display:block;
  padding-top:var(--header-h);
}
#main-content > .bleed-top{
  margin-top:calc(-1 * var(--header-h));
}

p{max-width:72ch;}
strong,b{font-weight:600;color:var(--text);}

a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

::selection{background:rgba(124,58,237,.55);color:#fff;}

/* ---------- 4. 布局工具 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.page-intro{
  padding-top:calc(var(--header-h) + clamp(3rem,7vw,6rem));
  padding-bottom:clamp(2rem,4vw,3.5rem);
}
.grid{display:grid;gap:clamp(1.5rem,3vw,2.5rem);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--aside{grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);}

/* ---------- 5. 文字层级 ---------- */
.h-display{
  font-size:clamp(2.4rem,6vw,4.5rem);
  font-weight:300;
  line-height:1.08;
  letter-spacing:-.005em;
}
.h-page{
  font-size:clamp(1.9rem,4vw,2.9rem);
  font-weight:600;
  line-height:1.2;
  letter-spacing:.02em;
}
.h-sec{
  font-size:clamp(1.25rem,2.2vw,1.65rem);
  font-weight:600;
  line-height:1.35;
  letter-spacing:.02em;
}
.lede{
  font-size:clamp(1rem,1.3vw,1.1rem);
  line-height:1.85;
  color:var(--text-dim);
  max-width:64ch;
}
.mono{font-family:var(--font-mono);letter-spacing:.04em;}

/* ---------- 6. 头部 ---------- */
.skip-link{
  position:fixed;
  top:.85rem;
  left:50%;
  z-index:200;
  padding:.6rem 1.1rem;
  border-radius:999px;
  background:var(--cyan);
  color:#03151b;
  font-size:.82rem;
  font-weight:600;
  letter-spacing:.08em;
  transform:translate(-50%,-260%);
  transition:transform .24s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{
  transform:translate(-50%,0);
  outline-offset:2px;
}

.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:100;
  color:var(--text);
  background:linear-gradient(180deg, rgba(5,8,23,.78), rgba(5,8,23,0));
  transition:background-color .3s var(--ease),box-shadow .3s var(--ease);
}
.site-header.is-stuck{
  background:rgba(6,9,26,.93);
  -webkit-backdrop-filter:blur(14px) saturate(150%);
  backdrop-filter:blur(14px) saturate(150%);
  box-shadow:0 1px 0 var(--line),0 22px 46px -34px rgba(0,0,0,.95);
}
.header-shell{
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  height:var(--header-h);
  display:flex;
  align-items:center;
  gap:1.2rem;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  flex:none;
}
.brand__mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border-radius:11px;
  font-family:var(--font-mono);
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.06em;
  color:#fff;
  background:linear-gradient(135deg,var(--violet),#4C1D95 55%,var(--cyan));
  box-shadow:0 0 0 1px rgba(124,58,237,.55),0 12px 26px -16px rgba(124,58,237,1);
}
.brand__stack{
  display:flex;
  flex-direction:column;
  line-height:1.25;
}
.brand__name{
  font-size:1rem;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--text);
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.14em;
  color:var(--text-soft);
  text-transform:uppercase;
}
.brand--stacked{
  flex-direction:column;
  align-items:flex-start;
  gap:.9rem;
}

/* 主导航 */
.site-nav{
  margin-left:auto;
  min-width:0;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:.12rem;
}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:.5rem .62rem;
  border-radius:9px;
  font-size:.9rem;
  letter-spacing:.02em;
  color:var(--text-dim);
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:.62rem;
  right:.62rem;
  bottom:.3rem;
  height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease);
}
.site-nav__link:hover{
  color:var(--text);
  background:rgba(124,58,237,.14);
}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{
  color:var(--text);
  font-weight:600;
}
.site-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:linear-gradient(90deg,var(--amber),var(--magenta));
}

/* 头部右侧 */
.header-side{
  display:flex;
  align-items:center;
  gap:.55rem;
  flex:none;
}
.head-link{
  padding:.45rem .4rem;
  border-bottom:1px solid transparent;
  font-size:.82rem;
  letter-spacing:.08em;
  color:var(--text-dim);
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.head-link:hover{
  color:var(--cyan);
  border-bottom-color:rgba(34,211,238,.65);
}
.head-cta{
  padding:.5rem 1.05rem;
  border-radius:999px;
  font-size:.85rem;
  font-weight:600;
  letter-spacing:.04em;
  color:#F8FAFC;
  background:linear-gradient(120deg,var(--violet),#5B21B6);
  box-shadow:0 14px 28px -20px rgba(124,58,237,1);
  transition:transform .2s var(--ease),filter .2s var(--ease),box-shadow .2s var(--ease);
}
.head-cta:hover{
  transform:translateY(-1px);
  filter:brightness(1.09);
  box-shadow:0 18px 32px -18px rgba(124,58,237,1);
}

/* 移动开关 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.5rem .85rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(16,26,58,.6);
  color:var(--text-dim);
  font-size:.78rem;
  letter-spacing:.1em;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.nav-toggle:hover{color:var(--text);border-color:var(--violet);}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:16px;
}
.nav-toggle__bars i{
  display:block;
  height:1.5px;
  border-radius:2px;
  background:currentColor;
  transition:transform .25s var(--ease);
}
.site-header[data-open] .nav-toggle__bars i:first-child{transform:translateY(2.75px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars i:last-child{transform:translateY(-2.75px) rotate(-45deg);}
.nav-toggle__label{white-space:nowrap;}

/* 滚动进度尺 */
.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(42,58,106,.35);
}
.scroll-meter__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 55%,var(--magenta));
}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(4rem,10vw,8rem);
  background:linear-gradient(180deg, rgba(10,16,36,.65), rgba(5,8,23,.99) 42%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:1px;
  background:linear-gradient(90deg,transparent,var(--violet) 30%,var(--cyan) 70%,transparent);
  opacity:.65;
}
.footer-grid{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(3rem,7vw,5rem) var(--gutter) 2.4rem;
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,2fr) minmax(0,1.25fr);
  gap:clamp(2rem,4vw,3.5rem);
}
.footer-brand{
  display:flex;
  flex-direction:column;
  gap:1.4rem;
}
.footer-brand .brand__mark{
  width:44px;
  height:44px;
  border-radius:13px;
  font-size:.92rem;
}
.footer-stamp{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.1em;
  color:var(--text-soft);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(1.4rem,3vw,2.2rem);
}
.footer-col__title{
  margin-bottom:1rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--cyan);
}
.footer-col ul{
  display:grid;
  gap:.55rem;
}
.footer-col a{
  display:inline-block;
  font-size:.92rem;
  color:var(--text-dim);
  transition:color .2s var(--ease);
}
.footer-col a::before{
  content:"";
  display:inline-block;
  width:0;
  height:1px;
  margin-right:0;
  vertical-align:middle;
  background:var(--magenta);
  transition:width .22s var(--ease),margin-right .22s var(--ease);
}
.footer-col a:hover{color:var(--text);}
.footer-col a:hover::before{
  width:14px;
  margin-right:.45rem;
}
.footer-contact{
  display:flex;
  flex-direction:column;
  gap:.85rem;
  min-width:0;
}
.copy-mail{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:.18rem;
  width:100%;
  padding:.62rem .78rem;
  border:1px dashed rgba(42,58,106,.95);
  border-radius:var(--radius-sm);
  background:rgba(16,26,58,.45);
  text-align:left;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.copy-mail:hover{
  border-color:var(--cyan);
  background:rgba(34,211,238,.09);
}
.copy-mail__text{
  font-family:var(--font-mono);
  font-size:.8rem;
  color:var(--text);
  overflow-wrap:anywhere;
}
.copy-mail__hint{
  font-size:.68rem;
  letter-spacing:.14em;
  color:var(--text-soft);
}
.copy-mail[data-copied]{
  border-color:var(--ok);
  background:rgba(52,211,153,.1);
}
.copy-mail[data-copied] .copy-mail__hint{color:var(--ok);}
.footer-line{
  display:flex;
  gap:.7rem;
  align-items:baseline;
  font-size:.84rem;
}
.footer-line__k{
  flex:none;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.14em;
  color:var(--amber);
}
.footer-line__v{color:var(--text-dim);}
.footer-note{
  font-size:.76rem;
  line-height:1.7;
  color:var(--text-soft);
}
.footer-base{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:1.3rem var(--gutter) 2.2rem;
  border-top:1px solid rgba(42,58,106,.55);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.6rem 1.4rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.06em;
  color:var(--text-soft);
}
.footer-base p{max-width:none;}

/* ---------- 8. 通用组件 ---------- */
.plate{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.33rem .8rem .33rem .62rem;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(16,26,58,.55);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.16em;
  color:var(--text-dim);
  text-transform:uppercase;
}
.plate::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 12px var(--cyan);
}
.plate--amber::before{background:var(--amber);box-shadow:0 0 12px var(--amber);}
.plate--magenta::before{background:var(--magenta);box-shadow:0 0 12px var(--magenta);}

.section-label{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:.9rem;
  margin-bottom:1.2rem;
}
.section-label__no{
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.2em;
  color:var(--violet);
}
.section-label__name{
  font-size:.78rem;
  letter-spacing:.24em;
  color:var(--text-dim);
}

.figure{
  font-family:var(--font-mono);
  font-weight:600;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--text);
}
.figure--xl{font-size:clamp(2.6rem,7vw,4.6rem);}
.figure--lg{font-size:clamp(1.8rem,3.4vw,2.6rem);}
.figure--amber{color:var(--amber);}
.figure--cyan{color:var(--cyan);}

.glass{
  position:relative;
  background:linear-gradient(160deg, rgba(16,26,58,.84), rgba(10,16,36,.62));
  border:1px solid rgba(42,58,106,.85);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.glass--lit{
  box-shadow:inset 0 1px 0 rgba(248,250,252,.06),0 34px 74px -54px rgba(124,58,237,.95);
}
.slab{
  background:var(--ink-800);
  border:1px solid rgba(42,58,106,.5);
  border-radius:var(--radius);
}
.plaque{
  padding:clamp(1.3rem,2.6vw,2rem);
  border-top:1px solid var(--line);
}

.spec{display:grid;gap:.75rem;}
.spec__row{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  gap:1rem;
  padding-bottom:.6rem;
  border-bottom:1px dashed rgba(42,58,106,.7);
}
.spec__k{
  font-size:.82rem;
  letter-spacing:.06em;
  color:var(--text-dim);
}
.spec__v{
  font-family:var(--font-mono);
  font-size:.9rem;
  color:var(--text);
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.72rem 1.3rem;
  border:1px solid transparent;
  border-radius:999px;
  font-size:.9rem;
  font-weight:600;
  letter-spacing:.03em;
  transition:transform .2s var(--ease),filter .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.btn:hover{transform:translateY(-2px);}
.btn--primary{
  background:linear-gradient(120deg,var(--violet),#5B21B6);
  color:#fff;
  box-shadow:0 18px 36px -24px rgba(124,58,237,1);
}
.btn--cyan{
  background:linear-gradient(120deg,var(--cyan),#0891B2);
  color:#03151b;
  box-shadow:0 18px 36px -26px rgba(34,211,238,1);
}
.btn--ghost{
  border-color:var(--line);
  background:rgba(16,26,58,.5);
  color:var(--text);
}
.btn--ghost:hover{border-color:var(--cyan);}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.08em;
  color:var(--text-soft);
}
.crumbs a{
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.crumbs a:hover{
  color:var(--cyan);
  border-bottom-color:currentColor;
}
.crumbs__sep{opacity:.5;}
.crumbs [aria-current="page"]{color:var(--text);}

.dot-list{display:grid;gap:.6rem;}
.dot-list li{
  position:relative;
  padding-left:1.1rem;
  font-size:.95rem;
  color:var(--text-dim);
}
.dot-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:.75em;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--violet);
}

.rule{
  height:1px;
  border:0;
  margin:clamp(2rem,5vw,3.5rem) 0;
  background:linear-gradient(90deg,var(--line),transparent);
}

/* ---------- 9. 图片容器 ---------- */
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  border:1px solid rgba(42,58,106,.75);
  border-radius:var(--radius);
  background:linear-gradient(140deg,var(--glass),var(--ink-950) 58%,#1B1040);
}
.media-frame > img,
.media-frame > video,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,transparent 46%,rgba(5,8,23,.6));
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:4/5;}
.media-caption{
  margin-top:.7rem;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.05em;
  color:var(--text-soft);
}

/* ---------- 10. 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(1rem,3vw,2rem);
  bottom:clamp(1rem,3vw,2rem);
  z-index:90;
  display:none;
  place-items:center;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:50%;
  background:rgba(16,26,58,.86);
  color:var(--text-dim);
  font-size:1rem;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  transition:color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.to-top[data-visible]{display:grid;}
.to-top:hover{
  color:var(--cyan);
  border-color:var(--cyan);
  transform:translateY(-2px);
}

/* ---------- 11. 响应式 ---------- */
@media (max-width:1100px){
  .site-nav__link{padding:.5rem .48rem;font-size:.86rem;}
  .head-link{display:none;}
}

@media (max-width:1000px){
  .footer-grid{
    grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);
  }
  .footer-contact{grid-column:1 / -1;}
}

@media (max-width:980px){
  .nav-toggle{display:inline-flex;}
  .head-cta{display:none;}

  .site-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    bottom:0;
    margin:0;
    padding:1.5rem var(--gutter) 4rem;
    display:flex;
    flex-direction:column;
    background:linear-gradient(180deg, rgba(6,9,26,.98), rgba(10,16,36,.99));
    -webkit-backdrop-filter:blur(18px);
    backdrop-filter:blur(18px);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s var(--ease);
  }
  .site-header[data-open] .site-nav{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:.1rem;
  }
  .site-nav__link{
    display:block;
    padding:.9rem .15rem;
    border-bottom:1px solid rgba(42,58,106,.5);
    border-radius:0;
    font-size:1.35rem;
    font-weight:300;
    letter-spacing:.02em;
  }
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]{
    color:var(--amber);
    border-bottom-color:rgba(245,158,11,.6);
  }
  .site-nav__link:hover{background:rgba(124,58,237,.16);}

  .grid--2,
  .grid--3,
  .grid--aside{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:640px){
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-contact{grid-column:auto;}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));}
  .brand__tag{display:none;}
  .footer-brand .brand__tag{display:inline;}
  .footer-base{flex-direction:column;align-items:flex-start;}
}

@media (max-width:420px){
  .footer-cols{grid-template-columns:minmax(0,1fr);}
  .head-cta{display:none;}
}

/* ---------- 12. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
}