/* ==========================================================================
   PG娱乐馆 · 共享样式表 /assets/site.css
   规则控制室视觉系统：深墨绿查表底 + 纸感米白读规底 + 电光青焦点 + 琥珀金切换线
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --pg-ink:#0B2B24;
  --pg-ink-2:#123A31;
  --pg-ink-3:#0E332B;
  --pg-cyan:#25D6C4;
  --pg-amber:#E3A72F;
  --pg-amber-deep:#A96B12;
  --pg-paper:#F4EFDF;
  --pg-paper-2:#E4DAC2;
  --pg-black:#101815;
  --pg-mist:#6E8178;
  --pg-warm:#FBF8EF;

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

  --pg-header-h:76px;
  --pg-max:1240px;
  --pg-gutter:clamp(18px,4vw,48px);
  --pg-radius-xl:34px;
  --pg-radius-l:22px;
  --pg-radius-m:14px;
  --pg-radius-pill:999px;
  --pg-line:rgba(227,167,47,.28);
  --pg-ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--pg-header-h) + 20px);
}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;}
a{color:inherit;}
table{border-collapse:collapse;}

/* ---------- 3. 基础中文排版 ---------- */
body{
  background:var(--pg-ink);
  color:var(--pg-paper);
  font-family:var(--pg-font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  padding-top:var(--pg-header-h);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

::selection{background:var(--pg-cyan);color:var(--pg-ink);}

/* ---------- 4. 跳转链接 ---------- */
.pg-skip{
  position:fixed;
  top:0;
  left:50%;
  z-index:200;
  padding:12px 24px;
  border-radius:0 0 var(--pg-radius-m) var(--pg-radius-m);
  background:var(--pg-cyan);
  color:var(--pg-ink);
  font-family:var(--pg-font-display);
  font-size:13px;
  font-weight:600;
  letter-spacing:.12em;
  text-decoration:none;
  transform:translate(-50%,-140%);
  transition:transform .24s var(--pg-ease);
}
.pg-skip:focus{transform:translate(-50%,0);}

/* ---------- 5. 头部骨架 ---------- */
.pg-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:100;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background-color .32s var(--pg-ease),border-color .32s var(--pg-ease);
}
.pg-header[data-scrolled="true"]{
  background:rgba(11,43,36,.95);
  border-bottom-color:var(--pg-line);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.pg-header__inner{
  width:100%;
  max-width:var(--pg-max);
  margin-inline:auto;
  padding-inline:var(--pg-gutter);
  height:var(--pg-header-h);
  display:flex;
  align-items:center;
  gap:clamp(14px,3vw,40px);
}
.pg-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:none;
}

/* ---------- 6. 品牌铭牌 ---------- */
.pg-brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:none;
  text-decoration:none;
  color:var(--pg-paper);
}
.pg-brand__mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:none;
  border-radius:14px;
  background:var(--pg-cyan);
  color:var(--pg-ink);
  font-family:var(--pg-font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  box-shadow:0 0 0 1px rgba(37,214,196,.4),inset 0 -10px 18px rgba(11,43,36,.20);
  transition:box-shadow .25s var(--pg-ease),transform .25s var(--pg-ease);
}
.pg-brand:hover .pg-brand__mark{
  transform:translateY(-1px);
  box-shadow:0 0 0 1px rgba(37,214,196,.7),0 8px 20px rgba(37,214,196,.24);
}
.pg-brand__text{display:block;min-width:0;}
.pg-brand__name{
  display:block;
  font-family:var(--pg-font-display);
  font-size:16px;
  font-weight:600;
  letter-spacing:.10em;
  line-height:1.2;
  color:var(--pg-warm);
}
.pg-brand__sub{
  display:block;
  margin-top:3px;
  font-family:var(--pg-font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  line-height:1.2;
  color:var(--pg-amber);
}

/* ---------- 7. 主导航 ---------- */
.pg-nav{margin-left:auto;}
.pg-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(4px,1.3vw,20px);
}
.pg-nav__link{
  position:relative;
  display:inline-block;
  padding:8px 4px;
  color:rgba(244,239,223,.76);
  font-family:var(--pg-font-display);
  font-size:13px;
  font-weight:500;
  letter-spacing:.12em;
  text-decoration:none;
  transition:color .22s var(--pg-ease);
}
.pg-nav__link::after{
  content:"";
  position:absolute;
  left:2px;
  right:2px;
  bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--pg-cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .26s var(--pg-ease),background-color .26s var(--pg-ease);
}
.pg-nav__link:hover,
.pg-nav__link:focus-visible{color:var(--pg-warm);}
.pg-nav__link:hover::after{transform:scaleX(1);}
.pg-nav__link[aria-current="page"]{color:var(--pg-cyan);}
.pg-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--pg-amber);
}

/* ---------- 8. 移动端菜单按钮 ---------- */
.pg-nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 15px;
  border-radius:var(--pg-radius-pill);
  border:1px solid rgba(244,239,223,.26);
  background:rgba(244,239,223,.07);
  color:var(--pg-paper);
  font-family:var(--pg-font-display);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .22s var(--pg-ease),background-color .22s var(--pg-ease);
}
.pg-nav-toggle:hover{border-color:var(--pg-cyan);background:rgba(37,214,196,.12);}
.pg-nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:background-color .22s var(--pg-ease);
}
.pg-nav-toggle__bars::before,
.pg-nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .26s var(--pg-ease),top .26s var(--pg-ease);
}
.pg-nav-toggle__bars::before{top:-5px;}
.pg-nav-toggle__bars::after{top:5px;}
.pg-nav-toggle[aria-expanded="true"] .pg-nav-toggle__bars{background:transparent;}
.pg-nav-toggle[aria-expanded="true"] .pg-nav-toggle__bars::before{top:0;transform:rotate(45deg);}
.pg-nav-toggle[aria-expanded="true"] .pg-nav-toggle__bars::after{top:0;transform:rotate(-45deg);}
.pg-nav-toggle__label{display:inline-block;}

/* ---------- 9. 阅读进度条 ---------- */
.pg-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
  background:transparent;
}
.pg-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--pg-cyan) 0%,var(--pg-amber) 100%);
  transition:width .12s linear;
}

/* ---------- 10. 按钮族 ---------- */
.pg-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 24px;
  border-radius:var(--pg-radius-pill);
  border:1px solid transparent;
  font-family:var(--pg-font-display);
  font-size:13px;
  font-weight:600;
  letter-spacing:.10em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .22s var(--pg-ease),background-color .22s var(--pg-ease),color .22s var(--pg-ease),border-color .22s var(--pg-ease),box-shadow .22s var(--pg-ease);
}
.pg-btn--amber{
  background:var(--pg-amber);
  border-color:var(--pg-amber);
  color:var(--pg-ink);
  box-shadow:0 6px 18px rgba(227,167,47,.20);
}
.pg-btn--amber:hover{
  background:var(--pg-cyan);
  border-color:var(--pg-cyan);
  transform:translateY(-2px);
  box-shadow:0 10px 24px rgba(37,214,196,.24);
}
.pg-btn--line{
  background:transparent;
  border-color:rgba(244,239,223,.34);
  color:var(--pg-paper);
}
.pg-btn--line:hover{border-color:var(--pg-cyan);color:var(--pg-cyan);transform:translateY(-2px);}
.pg-btn--solid{
  background:var(--pg-ink);
  border-color:var(--pg-ink);
  color:var(--pg-paper);
}
.pg-btn--solid:hover{background:var(--pg-ink-2);border-color:var(--pg-ink-2);transform:translateY(-2px);}
.pg-btn--paper{
  background:var(--pg-paper);
  border-color:var(--pg-paper-2);
  color:var(--pg-ink);
}
.pg-btn--paper:hover{background:var(--pg-warm);transform:translateY(-2px);}
.pg-header__cta{padding:10px 20px;font-size:12.5px;}

/* ---------- 11. 页脚 ---------- */
.pg-footer{
  position:relative;
  background:var(--pg-ink);
  color:var(--pg-paper);
  border-top:1px solid rgba(37,214,196,.22);
  padding-top:clamp(48px,7vw,88px);
}
.pg-footer::before{
  content:"";
  position:absolute;
  top:-2px;
  left:0;
  width:clamp(80px,22vw,280px);
  height:2px;
  background:linear-gradient(90deg,var(--pg-cyan),var(--pg-amber));
}
.pg-footer__inner{
  width:100%;
  max-width:var(--pg-max);
  margin-inline:auto;
  padding-inline:var(--pg-gutter);
}
.pg-footer__grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.25fr;
  gap:clamp(24px,4vw,56px);
}
.pg-footer__brand{min-width:0;}
.pg-footer__mark{
  font-family:var(--pg-font-display);
  font-size:clamp(1.35rem,2.4vw,1.85rem);
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.2;
  color:var(--pg-warm);
}
.pg-footer__tag{
  margin-top:12px;
  max-width:28ch;
  font-size:14px;
  line-height:1.85;
  color:rgba(244,239,223,.68);
}
.pg-footer__badge{
  display:inline-flex;
  align-items:center;
  margin-top:20px;
  padding:6px 14px;
  border-radius:var(--pg-radius-pill);
  border:1px solid rgba(227,167,47,.5);
  font-family:var(--pg-font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--pg-amber);
}
.pg-footer__col{min-width:0;}
.pg-footer__title{
  font-family:var(--pg-font-display);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--pg-cyan);
  margin-bottom:18px;
}
.pg-footer__list{display:grid;gap:11px;}
.pg-footer__link{
  display:inline-flex;
  align-items:baseline;
  gap:9px;
  font-size:14px;
  text-decoration:none;
  color:rgba(244,239,223,.76);
  transition:color .2s var(--pg-ease),transform .2s var(--pg-ease);
}
.pg-footer__link:hover{color:var(--pg-warm);transform:translateX(3px);}
.pg-footer__idx{
  font-family:var(--pg-font-mono);
  font-size:10px;
  letter-spacing:.08em;
  color:rgba(227,167,47,.72);
  flex:none;
}
.pg-footer__lines{display:grid;gap:11px;font-size:13.5px;line-height:1.7;}
.pg-footer__lines li{display:flex;gap:10px;color:rgba(244,239,223,.74);word-break:break-word;}
.pg-footer__key{
  flex:none;
  min-width:38px;
  font-family:var(--pg-font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.9;
  color:var(--pg-amber);
}
.pg-footer__bottom{
  margin-top:clamp(36px,5vw,64px);
  padding:22px 0 30px;
  border-top:1px solid rgba(244,239,223,.12);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 28px;
}
.pg-footer__copy{
  font-family:var(--pg-font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(244,239,223,.55);
}
.pg-footer__legal{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  font-family:var(--pg-font-display);
  font-size:12px;
  letter-spacing:.1em;
}
.pg-footer__legal a{
  color:rgba(244,239,223,.6);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--pg-ease),border-color .2s var(--pg-ease);
}
.pg-footer__legal a:hover{color:var(--pg-cyan);border-bottom-color:var(--pg-cyan);}

/* ---------- 12. 内容容器与分区 ---------- */
.pg-container{
  width:100%;
  max-width:var(--pg-max);
  margin-inline:auto;
  padding-inline:var(--pg-gutter);
}
.pg-section{padding-block:clamp(44px,7vw,96px);}
.pg-section--paper{background:var(--pg-paper);color:var(--pg-black);}
.pg-section--ink{background:var(--pg-ink);color:var(--pg-paper);}
.pg-section--tint{background:var(--pg-ink-2);color:var(--pg-paper);}

/* ---------- 13. 面包屑 ---------- */
.pg-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  font-family:var(--pg-font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--pg-mist);
}
.pg-breadcrumb li{display:inline-flex;align-items:center;}
.pg-breadcrumb li:not(:last-child)::after{
  content:"/";
  margin:0 9px;
  opacity:.45;
}
.pg-breadcrumb a{color:inherit;text-decoration:none;transition:color .2s var(--pg-ease);}
.pg-breadcrumb a:hover{color:var(--pg-amber-deep);}
.pg-section--ink .pg-breadcrumb,
.pg-section--tint .pg-breadcrumb{color:rgba(244,239,223,.55);}
.pg-section--ink .pg-breadcrumb a:hover,
.pg-section--tint .pg-breadcrumb a:hover{color:var(--pg-cyan);}

/* ---------- 14. 排版级别 ---------- */
.pg-eyebrow{
  font-family:var(--pg-font-mono);
  font-size:11px;
  letter-spacing:.24em;
  color:var(--pg-amber);
  margin-bottom:14px;
}
.pg-display{
  font-family:var(--pg-font-display);
  font-weight:200;
  font-size:clamp(2.6rem,7.2vw,6rem);
  line-height:1.02;
  letter-spacing:-.02em;
}
.pg-h2{
  font-family:var(--pg-font-display);
  font-weight:600;
  font-size:clamp(1.45rem,3vw,2.35rem);
  line-height:1.28;
  letter-spacing:.01em;
  margin-bottom:16px;
}
.pg-h3{
  font-family:var(--pg-font-display);
  font-weight:600;
  font-size:clamp(1.05rem,1.6vw,1.28rem);
  line-height:1.4;
  letter-spacing:.02em;
  margin-bottom:10px;
}
.pg-lead{
  font-size:clamp(1rem,1.35vw,1.14rem);
  line-height:1.9;
  max-width:62ch;
  opacity:.86;
}
.pg-text{
  font-size:16px;
  line-height:1.85;
  max-width:70ch;
}
.pg-text + .pg-text{margin-top:14px;}

/* ---------- 15. 栅格 ---------- */
.pg-grid{display:grid;gap:clamp(16px,2.4vw,28px);}
.pg-grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.pg-grid--3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));}
.pg-grid--bento{grid-template-columns:repeat(12,minmax(0,1fr));}

/* ---------- 16. 卡片 ---------- */
.pg-card{
  background:var(--pg-warm);
  color:var(--pg-black);
  border:1px solid rgba(16,24,21,.09);
  border-radius:var(--pg-radius-l);
  padding:clamp(20px,3vw,32px);
  transition:transform .28s var(--pg-ease),box-shadow .28s var(--pg-ease),border-color .28s var(--pg-ease);
}
.pg-card:hover{
  transform:translateY(-3px);
  box-shadow:0 18px 36px rgba(11,43,36,.14);
  border-color:rgba(169,107,18,.35);
}
.pg-card--ink{
  background:var(--pg-ink-2);
  color:var(--pg-paper);
  border-color:rgba(244,239,223,.1);
}
.pg-card--ink:hover{
  border-color:rgba(37,214,196,.5);
  box-shadow:0 18px 36px rgba(0,0,0,.28);
}
.pg-card--paper{
  background:var(--pg-paper);
  border-color:rgba(16,24,21,.1);
}

/* ---------- 17. 图片容器 ---------- */
.pg-media{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--pg-radius-l);
  background:linear-gradient(150deg,var(--pg-ink-2),var(--pg-ink));
  aspect-ratio:16/10;
  isolation:isolate;
}
.pg-media--square{aspect-ratio:1/1;}
.pg-media--wide{aspect-ratio:21/9;}
.pg-media--tall{aspect-ratio:3/4;}
.pg-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  transition:transform .6s var(--pg-ease);
}
.pg-media:hover img{transform:scale(1.03);}
.pg-media__placeholder{
  position:absolute;
  inset:0;
  background:
    repeating-linear-gradient(135deg,rgba(244,239,223,.07) 0 12px,transparent 12px 24px),
    radial-gradient(120% 100% at 18% 0%,var(--pg-ink-2) 0%,var(--pg-ink) 72%);
}
.pg-media__caption{
  position:absolute;
  left:14px;
  bottom:14px;
  z-index:2;
  padding:5px 12px;
  border-radius:var(--pg-radius-pill);
  background:rgba(11,43,36,.78);
  color:var(--pg-warm);
  font-family:var(--pg-font-mono);
  font-size:10px;
  letter-spacing:.12em;
}

/* ---------- 18. 标签胶囊 ---------- */
.pg-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 13px;
  border-radius:var(--pg-radius-pill);
  border:1px solid rgba(37,214,196,.36);
  background:rgba(37,214,196,.13);
  color:var(--pg-cyan);
  font-family:var(--pg-font-mono);
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.7;
}
.pg-tag--amber{
  border-color:rgba(227,167,47,.44);
  background:rgba(227,167,47,.15);
  color:var(--pg-amber);
}
.pg-tag--paper{
  border-color:rgba(169,107,18,.34);
  background:var(--pg-paper-2);
  color:var(--pg-amber-deep);
}

/* ---------- 19. 纵向分类索引条 ---------- */
.pg-index{display:grid;gap:4px;}
.pg-index__link{
  display:flex;
  align-items:center;
  gap:10px;
  padding:11px 14px;
  border-left:2px solid transparent;
  border-radius:0 var(--pg-radius-m) var(--pg-radius-m) 0;
  color:rgba(244,239,223,.72);
  font-family:var(--pg-font-display);
  font-size:13px;
  letter-spacing:.1em;
  text-decoration:none;
  transition:color .2s var(--pg-ease),background-color .2s var(--pg-ease),border-color .2s var(--pg-ease);
}
.pg-index__link:hover{
  color:var(--pg-warm);
  background:rgba(244,239,223,.06);
}
.pg-index__link[data-active]{
  color:var(--pg-cyan);
  background:rgba(37,214,196,.10);
  border-left-color:var(--pg-cyan);
}

/* ---------- 20. 可展开内容组 ---------- */
.pg-disclosure{
  background:var(--pg-warm);
  color:var(--pg-black);
  border:1px solid rgba(16,24,21,.13);
  border-radius:var(--pg-radius-m);
  overflow:hidden;
  transition:border-color .26s var(--pg-ease),box-shadow .26s var(--pg-ease);
}
.pg-disclosure[data-open]{
  border-color:rgba(37,214,196,.6);
  box-shadow:0 14px 30px rgba(11,43,36,.12);
}
.pg-disclosure__btn{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:17px 22px;
  background:none;
  border:0;
  cursor:pointer;
  text-align:left;
  font-family:var(--pg-font-display);
  font-size:15.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--pg-ink);
}
.pg-disclosure__sign{
  flex:none;
  display:grid;
  place-items:center;
  width:26px;
  height:26px;
  border-radius:50%;
  border:1px solid rgba(16,24,21,.24);
  font-family:var(--pg-font-mono);
  font-size:14px;
  line-height:1;
  color:var(--pg-amber-deep);
  transition:transform .3s var(--pg-ease),background-color .3s var(--pg-ease),color .3s var(--pg-ease),border-color .3s var(--pg-ease);
}
.pg-disclosure[data-open] .pg-disclosure__sign{
  transform:rotate(45deg);
  background:var(--pg-cyan);
  border-color:var(--pg-cyan);
  color:var(--pg-ink);
}
.pg-disclosure__panel{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .34s var(--pg-ease);
}
.pg-disclosure[data-open] .pg-disclosure__panel{grid-template-rows:1fr;}
.pg-disclosure__inner{overflow:hidden;}
.pg-disclosure__body{
  padding:0 22px 22px;
  font-size:15px;
  line-height:1.85;
  color:var(--pg-black);
  opacity:.84;
}

/* ---------- 21. 复制标签 ---------- */
.pg-copy{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 13px;
  border-radius:var(--pg-radius-pill);
  border:1px dashed rgba(37,214,196,.55);
  background:rgba(37,214,196,.09);
  color:var(--pg-cyan);
  font-family:var(--pg-font-mono);
  font-size:11px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .2s var(--pg-ease),border-color .2s var(--pg-ease),color .2s var(--pg-ease);
}
.pg-copy:hover{background:rgba(37,214,196,.2);}
.pg-copy[data-copied]{
  border-style:solid;
  border-color:var(--pg-amber);
  background:rgba(227,167,47,.16);
  color:var(--pg-amber);
}

/* ---------- 22. 焦点可见 ---------- */
:focus-visible{
  outline:2px solid var(--pg-cyan);
  outline-offset:3px;
  border-radius:4px;
}
.pg-section--paper :focus-visible,
.pg-card :focus-visible,
.pg-disclosure :focus-visible{
  outline-color:var(--pg-amber-deep);
}

/* ---------- 23. 平板 / 手机 ---------- */
@media (max-width:1100px){
  .pg-footer__grid{grid-template-columns:1.3fr 1fr 1fr;}
  .pg-footer__col:last-child{grid-column:1 / -1;}
}

@media (max-width:980px){
  :root{--pg-header-h:66px;}

  .pg-header__inner{gap:12px;}
  .pg-brand__mark{width:38px;height:38px;border-radius:12px;font-size:11.5px;}
  .pg-brand__name{font-size:14.5px;letter-spacing:.08em;}

  .pg-nav-toggle{display:inline-flex;}

  .pg-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    margin:0;
    padding:8px var(--pg-gutter) 22px;
    background:var(--pg-ink-2);
    border-top:1px solid var(--pg-line);
    border-bottom:1px solid rgba(37,214,196,.24);
    box-shadow:0 28px 48px rgba(0,0,0,.42);
    max-height:calc(100vh - var(--pg-header-h));
    overflow-y:auto;
    display:none;
  }
  .pg-nav[data-open]{display:block;animation:pg-panel-drop .28s var(--pg-ease) both;}
  .pg-nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .pg-nav__link{
    display:block;
    padding:15px 6px;
    font-size:15px;
    letter-spacing:.14em;
    border-bottom:1px solid rgba(244,239,223,.09);
  }
  .pg-nav__link::after{display:none;}
  .pg-nav__link[aria-current="page"]{color:var(--pg-cyan);}
  .pg-nav__link[aria-current="page"]::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    margin-right:11px;
    border-radius:50%;
    background:var(--pg-cyan);
    vertical-align:middle;
  }
  .pg-header__actions{margin-left:auto;}
}

@keyframes pg-panel-drop{
  from{opacity:0;transform:translateY(-10px);}
  to{opacity:1;transform:translateY(0);}
}

@media (max-width:900px){
  .pg-footer__grid{grid-template-columns:1fr 1fr;}
  .pg-footer__brand{grid-column:1 / -1;}
  .pg-footer__col:last-child{grid-column:auto;}
}

@media (max-width:680px){
  body{font-size:16px;}
  .pg-header__cta{padding:9px 15px;font-size:12px;letter-spacing:.06em;}
  .pg-grid--bento{grid-template-columns:repeat(6,minmax(0,1fr));}
}

@media (max-width:560px){
  .pg-footer__grid{grid-template-columns:1fr;}
  .pg-footer__bottom{flex-direction:column;align-items:flex-start;}
  .pg-footer__legal{gap:16px;}
}

@media (max-width:400px){
  .pg-brand__sub{display:none;}
  .pg-nav-toggle__label{display:none;}
  .pg-nav-toggle{padding:9px 11px;}
}

/* ---------- 24. 减少动效 ---------- */
@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;
  }
  .pg-nav[data-open]{animation:none;}
  .pg-media:hover img{transform:none;}
  .pg-card:hover{transform:none;}
}