/* ============================================================
   PG游艺 · 共享样式 /assets/site.css
   深空基底 + 霓虹脉冲 · 目录型内容地图
   ============================================================ */

/* ---------- 01 变量 ---------- */
:root{
  --c-base:#050A1A;
  --c-layer:#0B1430;
  --c-line:#12204A;
  --c-cyan:#16E0D2;
  --c-magenta:#FF3DA6;
  --c-amber:#FFB020;
  --c-purple:#6C7BFF;
  --c-green:#2BD97C;
  --c-text:#E8F1FF;
  --c-muted:#8FA3C8;
  --c-footer:#070D1E;

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --w-max:1240px;
  --gap:28px;
  --pad-y:72px;
  --glow-cyan:0 0 18px rgba(22,224,210,.45);
  --glow-magenta:0 0 18px rgba(255,61,166,.40);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 02 Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
:focus-visible{outline:2px solid var(--c-cyan);outline-offset:3px}

/* ---------- 03 基底与中文排版 ---------- */
body{
  min-height:100vh;
  color:var(--c-text);
  background-color:var(--c-base);
  background-image:
    radial-gradient(900px 520px at 80% -10%,rgba(255,61,166,.16),transparent 62%),
    radial-gradient(760px 480px at 10% 4%,rgba(22,224,210,.14),transparent 60%),
    linear-gradient(rgba(18,32,74,.55) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,32,74,.55) 1px,transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{line-height:1.25;font-weight:400}
p{max-width:38em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.08em}

/* ---------- 04 布局容器与网格 ---------- */
.container{width:100%;max-width:var(--w-max);margin:0 auto;padding:0 24px}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap)}
.col-main{grid-column:1 / span 7}
.col-side{grid-column:9 / span 4}
.col-half{grid-column:span 6}
.col-full{grid-column:1 / -1}

.section{position:relative;padding:var(--pad-y) 0}
.section__head{display:grid;gap:14px;margin-bottom:36px}
.section__index{font-family:var(--font-mono);font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--c-cyan)}
.section__title{font-size:clamp(28px,4.6vw,56px);font-weight:200;letter-spacing:.01em;line-height:1.16;max-width:24em}
.section__title strong{font-weight:900;color:var(--c-cyan);text-shadow:var(--glow-cyan)}
.section__lead{font-size:17px;line-height:1.8;color:var(--c-muted)}

/* ---------- 05 按钮 ---------- */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid var(--c-line);background:transparent;color:var(--c-text);
  font-family:var(--font-mono);font-size:14px;letter-spacing:.1em;white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease)
}
.btn:hover{border-color:var(--c-cyan);color:var(--c-cyan)}
.btn--amber{background:var(--c-amber);border-color:var(--c-amber);color:#160D00;font-weight:700}
.btn--amber:hover{background:#FFC košík}
.btn--amber:hover{background:#FFC44D;border-color:#FFC44D;color:#160D00}
.btn--cyan{background:var(--c-cyan);border-color:var(--c-cyan);color:#04121A;font-weight:700}
.btn--cyan:hover{background:#4DEDE2;border-color:#4DEDE2;color:#04121A}
.btn--ghost{border-color:#22366B;color:var(--c-muted)}
.btn--ghost:hover{color:var(--c-cyan);border-color:var(--c-cyan)}
.btn--sm{padding:8px 14px;font-size:12px}

/* ---------- 06 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;
  border:1px solid currentColor;color:var(--c-muted);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;line-height:1.5
}
.tag--cyan{color:var(--c-cyan)}
.tag--magenta{color:var(--c-magenta)}
.tag--amber{color:var(--c-amber)}
.tag--purple{color:var(--c-purple)}
.tag--green{color:var(--c-green)}

/* ---------- 07 面包屑 ---------- */
.breadcrumbs{padding:18px 0}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.breadcrumbs__item{display:flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-muted)}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:var(--c-line)}
.breadcrumbs__link{transition:color .18s var(--ease)}
.breadcrumbs__link:hover{color:var(--c-cyan)}
.breadcrumbs__current{color:var(--c-text)}

/* ---------- 08 资料卡 ---------- */
.card{
  position:relative;display:flex;flex-direction:column;gap:12px;padding:22px;
  background:var(--c-layer);border:1px solid var(--c-line);
  clip-path:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%);
  transition:background-color .2s var(--ease),border-color .2s var(--ease)
}
.card::before{
  content:"";position:absolute;left:0;top:0;height:1px;width:100%;
  background:linear-gradient(90deg,var(--c-cyan),rgba(22,224,210,0));
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)
}
.card:hover,.card:focus-within{background:#0E1A3C;border-color:#1B2E63}
.card:hover::before,.card:focus-within::before{transform:scaleX(1)}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.card__title{font-size:20px;font-weight:500;line-height:1.45}
.card__meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--c-muted)}
.card__body{font-size:15px;line-height:1.75;color:var(--c-muted)}
.card__foot{margin-top:auto;display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding-top:6px}

/* ---------- 09 分段切换 ---------- */
.tabs__list{display:flex;flex-wrap:wrap;gap:4px;border-bottom:1px solid var(--c-line)}
.tabs__btn{
  padding:10px 18px;border-bottom:2px solid transparent;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--c-muted);
  transition:color .18s var(--ease),border-color .18s var(--ease)
}
.tabs__btn:hover{color:var(--c-text)}
.tabs__btn[aria-selected="true"]{color:var(--c-text);border-bottom-color:var(--c-cyan);text-shadow:var(--glow-cyan)}
.tabs__panel{padding:26px 0 0}
.tabs__panel[hidden]{display:none}

/* ---------- 10 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16 / 9;
  border:1px solid var(--c-line);
  background:
    radial-gradient(120% 100% at 20% 10%,rgba(22,224,210,.16),transparent 62%),
    radial-gradient(110% 100% at 85% 90%,rgba(255,61,166,.16),transparent 64%),
    var(--c-layer);
  clip-path:polygon(0 0,calc(100% - 20px) 0,100% 20px,100% 100%,0 100%)
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(180deg,rgba(232,241,255,.05) 0 1px,transparent 1px 5px)
}
.media-frame__media{width:100%;height:100%;object-fit:cover}
.media-frame__cap{
  position:absolute;left:14px;bottom:12px;z-index:2;
  padding:4px 10px;background:rgba(5,10,26,.72);border:1px solid var(--c-line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-text)
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--tall{aspect-ratio:4 / 5}

/* ---------- 11 斜切分隔带 ---------- */
.divider-slant{
  position:relative;height:52px;margin:8px 0;overflow:hidden;
  border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  background:linear-gradient(180deg,rgba(11,20,48,.9),rgba(5,10,26,0))
}
.divider-slant::before{
  content:"";position:absolute;left:-4%;right:-4%;top:50%;height:2px;
  background:linear-gradient(90deg,transparent,var(--c-cyan) 25%,var(--c-magenta) 70%,transparent);
  transform:rotate(-6deg)
}
.divider-slant__tag{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;
  display:inline-flex;align-items:center;gap:8px;padding:5px 14px;
  background:var(--c-base);border:1px solid var(--c-cyan);color:var(--c-cyan);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;white-space:nowrap
}

/* ---------- 12 显现 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 13 滚动进度 ---------- */
.scroll-progress{
  position:fixed;left:0;top:0;width:100%;height:2px;z-index:200;pointer-events:none;
  background:linear-gradient(90deg,var(--c-cyan),var(--c-magenta) 55%,var(--c-amber));
  transform:scaleX(0);transform-origin:left
}

/* ---------- 14 跳转链接 ---------- */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:220;
  padding:10px 18px;background:var(--c-cyan);color:#04121A;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.12em;
  transition:top .18s var(--ease)
}
.skip-link:focus{top:12px}

/* ---------- 15 刊头 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(5,10,26,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s var(--ease)
}
.site-header.is-scrolled{box-shadow:0 14px 34px -22px rgba(0,0,0,.95)}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,224,210,.55),rgba(255,61,166,.55),transparent)
}
.masthead{position:relative}
.masthead__inner{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px;
  width:100%;max-width:var(--w-max);margin:0 auto;padding:14px 24px 12px
}
.masthead__index{grid-column:1;grid-row:1;justify-self:start;font-size:12px;letter-spacing:.18em;color:var(--c-muted)}
.masthead__index .mono{color:var(--c-cyan)}
.masthead__brand{grid-column:2;grid-row:1;justify-self:center;display:grid;justify-items:center;gap:4px;text-align:center}
.masthead__name{display:inline-flex;align-items:baseline;gap:4px;font-size:clamp(22px,3vw,32px);font-weight:200;letter-spacing:.08em;line-height:1.1}
.masthead__mark{font-family:var(--font-mono);font-weight:700;letter-spacing:.02em;color:var(--c-cyan);text-shadow:var(--glow-cyan)}
.masthead__tagline{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--c-muted)}
.masthead__tools{grid-column:3;grid-row:1;justify-self:end;display:flex;align-items:center;gap:10px}

/* 版本切换器 */
.version-switch{display:inline-flex;align-items:center;gap:2px;padding:2px;background:rgba(11,20,48,.75);border:1px solid var(--c-line)}
.version-switch__label{padding:0 8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:var(--c-muted)}
.version-switch__btn{
  padding:5px 10px;border:1px solid transparent;color:var(--c-muted);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease)
}
.version-switch__btn:hover{color:var(--c-text)}
.version-switch__btn[aria-pressed="true"]{background:var(--c-cyan);border-color:var(--c-cyan);color:#04121A}

/* 移动导航按钮 */
.nav-toggle{display:none;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--c-line);color:var(--c-muted)}
.nav-toggle__label{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em}
.nav-toggle__bars{
  display:block;width:18px;height:2px;background:var(--c-cyan);position:relative;
  box-shadow:0 -6px 0 var(--c-cyan),0 6px 0 var(--c-cyan);
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease)
}
.nav-toggle[aria-expanded="true"]{border-color:var(--c-cyan);color:var(--c-cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:var(--c-magenta);box-shadow:0 -6px 0 var(--c-magenta),0 6px 0 var(--c-magenta)}

/* 栏目导航 */
.site-nav{width:100%;max-width:var(--w-max);margin:0 auto;padding:0 24px 10px}
.site-nav__list{display:flex;flex-wrap:wrap;justify-content:center;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.site-nav__item{border-right:1px solid var(--c-line)}
.site-nav__item:first-child{border-left:1px solid var(--c-line)}
.site-nav__link{
  position:relative;display:flex;align-items:baseline;gap:8px;
  padding:13px 20px;font-size:15px;color:var(--c-muted);
  transition:color .18s var(--ease)
}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--c-cyan);
  transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease)
}
.site-nav__link:hover{color:var(--c-text)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--c-text)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);box-shadow:var(--glow-cyan)}
.site-nav__num{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--c-cyan)}

/* ---------- 16 页脚 ---------- */
.site-footer{margin-top:96px;background:var(--c-footer);border-top:1px solid var(--c-line)}
.footer-version{background:rgba(11,20,48,.55);border-bottom:1px solid var(--c-line)}
.footer-version__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  width:100%;max-width:var(--w-max);margin:0 auto;padding:12px 24px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--c-muted)
}
.footer-version__time,.footer-version__value{max-width:none}
.footer-version .mono{color:var(--c-cyan)}
.footer-main__grid{display:grid;grid-template-columns:1.1fr 2fr 1.3fr;gap:40px;padding-top:56px;padding-bottom:48px}
.footer-brand{display:grid;gap:12px;align-content:start}
.footer-brand__name{display:inline-flex;align-items:baseline;gap:4px;font-size:24px;font-weight:200;letter-spacing:.08em}
.footer-brand__mark{font-family:var(--font-mono);font-weight:700;color:var(--c-cyan);text-shadow:var(--glow-cyan)}
.footer-brand__desc{font-size:14px;line-height:1.8;color:var(--c-muted);max-width:22em}
.footer-nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.footer-nav__group{display:grid;gap:12px;align-content:start}
.footer-nav__title{font-family:var(--font-mono);font-size:12px;font-weight:400;letter-spacing:.18em;color:var(--c-cyan)}
.footer-nav__list{display:grid;gap:8px}
.footer-nav__link{display:inline-block;font-size:15px;color:var(--c-muted);transition:color .18s var(--ease),transform .18s var(--ease)}
.footer-nav__link:hover{color:var(--c-cyan);transform:translateX(4px)}
.footer-contact{display:grid;gap:12px;align-content:start}
.footer-contact__title{font-family:var(--font-mono);font-size:12px;font-weight:400;letter-spacing:.18em;color:var(--c-cyan)}
.footer-contact__list{display:grid;gap:12px}
.footer-contact__item{display:grid;gap:2px}
.footer-contact__label{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;color:#5F73A0}
.footer-contact__value{font-size:14px;line-height:1.7;color:var(--c-text);word-break:break-word}
a.footer-contact__value:hover{color:var(--c-cyan)}
.footer-bottom{border-top:1px solid var(--c-line)}
.footer-bottom__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  padding-top:16px;padding-bottom:22px;font-size:12px;color:var(--c-muted)
}
.footer-bottom__icp,.footer-bottom__note,.footer-bottom__copy{font-size:12px;letter-spacing:.12em;color:var(--c-muted)}
.footer-bottom__note{color:#6C7BFF}
.footer-bottom__copy .mono{color:var(--c-text)}

/* ---------- 17 响应式 ---------- */
@media (max-width:1023px){
  :root{--pad-y:56px;--gap:22px}
  .grid-12{grid-template-columns:repeat(6,1fr)}
  .col-main,.col-side,.col-half,.col-full{grid-column:1 / -1}
  .footer-main__grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:899px){
  .masthead__inner{
    grid-template-columns:1fr auto 1fr;gap:10px 12px;
    padding:14px 18px 10px
  }
  .masthead__index{display:none}
  .masthead__brand{grid-column:2;grid-row:1}
  .nav-toggle{display:inline-flex;grid-column:3;grid-row:1;justify-self:end}
  .masthead__tools{grid-column:1 / -1;grid-row:2;justify-self:center}
  .version-switch--header{display:none}

  .site-nav{display:none;padding:0 18px 16px}
  .site-nav[data-open]{display:block;animation:pgNavDrop .2s var(--ease) both}
  .site-nav__list{flex-direction:column;border-bottom:0}
  .site-nav__item{border:0;border-bottom:1px solid var(--c-line)}
  .site-nav__item:first-child{border-left:0;border-top:1px solid var(--c-line)}
  .site-nav__link{padding:15px 20px;font-size:17px;justify-content:space-between}
  .site-nav__num{order:2}

  .divider-slant{height:44px}
  .footer-main__grid{grid-template-columns:1fr;gap:32px;padding-top:40px;padding-bottom:36px}
  .footer-nav{grid-template-columns:1fr 1fr}
  .footer-bottom__inner{flex-direction:column;align-items:flex-start}
}
@media (max-width:639px){
  :root{--pad-y:48px}
  .container{padding:0 18px}
  .section__title{font-size:32px}
  .media-frame--wide{aspect-ratio:16 / 9}
  .media-frame--tall{aspect-ratio:1 / 1}
  .footer-nav{grid-template-columns:1fr}
  .footer-version__inner{flex-direction:column;align-items:flex-start;gap:8px}
  .tabs__btn{padding:10px 12px}
}
@keyframes pgNavDrop{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 18 动效可访问性 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.12s !important}
  .reveal{opacity:1;transform:none}
  .footer-nav__link:hover{transform:none}
  .site-nav[data-open]{animation:none}
}