/* ============================================================
   亚虎游戏站 · 共享外壳样式 /assets/site.css
   设计轴：夜间游戏厅 × 家庭客厅 · Bento 模块板 · 左右分置导航
   ============================================================ */

/* --- 1. Reset ---------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{
  background:#0A0A1C;
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--yh-header-h) + 16px);
}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,details,summary{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video,canvas{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
summary{cursor:pointer;list-style:none}
summary::-webkit-details-marker{display:none}
:focus-visible{outline:2px solid #00E8CE;outline-offset:2px;border-radius:8px}

/* --- 2. Tokens --------------------------------------------- */
:root{
  --yh-void:#0A0A1C;
  --yh-deep:#151238;
  --yh-lift:#241C55;
  --yh-cyan:#00E8CE;
  --yh-orange:#FF7A1A;
  --yh-gold:#FFC857;
  --yh-violet:#5B47D6;
  --yh-ink:#ECEAFB;
  --yh-mist:#A7A2D0;
  --yh-panel:#F5F4FF;
  --yh-panel-ink:#14122E;

  --yh-line:rgba(167,162,208,.22);
  --yh-line-strong:rgba(0,232,206,.34);
  --yh-text-soft:rgba(236,234,251,.82);

  --yh-font:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --yh-font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --yh-shell-w:1280px;
  --yh-radius:24px;
  --yh-radius-sm:12px;
  --yh-pill:999px;
  --yh-header-h:112px;
  --yh-ease:cubic-bezier(.22,.61,.36,1);
}

/* --- 3. Base ----------------------------------------------- */
body{
  min-height:100vh;
  background-color:var(--yh-void);
  background-image:
    radial-gradient(72% 46% at 88% -6%, rgba(0,232,206,.12), transparent 62%),
    radial-gradient(58% 44% at 4% 8%, rgba(91,71,214,.30), transparent 66%),
    radial-gradient(96% 62% at 50% 108%, rgba(255,122,26,.10), transparent 72%);
  background-repeat:no-repeat;
  color:var(--yh-ink);
  font-family:var(--yh-font);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
#main-content{display:block;scroll-margin-top:calc(var(--yh-header-h) + 12px)}

.yh-shell{
  width:min(100% - 48px, var(--yh-shell-w));
  margin-inline:auto;
}
.yh-mono{font-family:var(--yh-font-mono);letter-spacing:.08em}
.yh-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}

/* --- 4. 排版层级 ------------------------------------------- */
.yh-display{
  font-size:clamp(38px,7.2vw,88px);
  font-weight:900;
  line-height:1.02;
  letter-spacing:-.02em;
  text-shadow:0 0 26px rgba(0,232,206,.26),0 0 64px rgba(91,71,214,.34);
}
.yh-display .yh-accent{color:var(--yh-cyan);-webkit-text-stroke:1px rgba(0,232,206,.6)}
.yh-display .yh-accent--gold{color:var(--yh-gold);-webkit-text-stroke:1px rgba(255,200,87,.55)}
.yh-h2{font-size:clamp(26px,3.6vw,44px);font-weight:900;line-height:1.14;letter-spacing:-.01em}
.yh-h3{font-size:clamp(20px,2.2vw,26px);font-weight:800;line-height:1.3}
.yh-lede{font-size:clamp(16px,1.5vw,19px);line-height:1.7;color:var(--yh-text-soft);max-width:64ch}
.yh-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--yh-font-mono);font-size:12px;letter-spacing:.2em;
  color:var(--yh-mist);text-transform:uppercase;
}
.yh-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--yh-cyan);flex:none}
.yh-annot{
  writing-mode:vertical-rl;
  font-family:var(--yh-font-mono);font-size:12.5px;
  letter-spacing:.18em;color:var(--yh-mist);
}
.yh-slash{height:1px;border:0;background:linear-gradient(90deg,transparent,rgba(0,232,206,.45),transparent);margin-block:clamp(40px,6vw,72px)}

/* --- 5. 按钮 ----------------------------------------------- */
.yh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 20px;border-radius:var(--yh-pill);
  font-size:15px;font-weight:700;line-height:1;letter-spacing:.02em;white-space:nowrap;
  transition:filter 160ms var(--yh-ease),background-color 160ms var(--yh-ease),color 160ms var(--yh-ease),box-shadow 160ms var(--yh-ease);
}
.yh-btn:hover{filter:brightness(1.08)}
.yh-btn--gold{background:linear-gradient(140deg,#FFD980,#FFC857 55%,#F0A93C);color:var(--yh-panel-ink);box-shadow:0 10px 26px -12px rgba(255,200,87,.7)}
.yh-btn--outline{background:transparent;color:var(--yh-ink);box-shadow:inset 0 0 0 1px rgba(0,232,206,.42)}
.yh-btn--outline:hover{color:var(--yh-cyan);box-shadow:inset 0 0 0 1px var(--yh-cyan)}
.yh-btn--ghost{background:rgba(0,232,206,.12);color:var(--yh-cyan)}
.yh-btn--sm{padding:7px 14px;font-size:13px}

/* --- 6. 头部：通道指示带 ----------------------------------- */
.yh-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg,rgba(10,10,28,.98) 0%,rgba(13,12,34,.94) 100%);
  border-bottom:1px solid rgba(0,232,206,.18);
  box-shadow:0 20px 44px -30px rgba(0,0,0,.95);
}
.yh-skip{
  position:absolute;left:16px;top:-64px;z-index:120;
  padding:10px 18px;border-radius:var(--yh-pill);
  background:var(--yh-gold);color:var(--yh-panel-ink);
  font-size:14px;font-weight:700;
  transition:top 160ms var(--yh-ease);
}
.yh-skip:focus{top:10px}

.yh-channelbar{
  background:linear-gradient(90deg,rgba(21,18,56,.92),rgba(36,28,85,.96) 42%,rgba(21,18,56,.92));
  border-bottom:1px solid rgba(167,162,208,.14);
}
.yh-channelbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
.yh-channelbar__route{
  display:inline-flex;align-items:center;gap:10px;min-width:0;
  font-size:12px;letter-spacing:.12em;color:var(--yh-mist);
  transition:color 160ms var(--yh-ease);
}
.yh-channelbar__route:hover{color:var(--yh-cyan)}
.yh-channelbar__route .yh-mono{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.yh-dot{
  width:7px;height:7px;border-radius:50%;flex:none;
  background:var(--yh-cyan);
  animation:yh-pulse 2.6s ease-out infinite;
}
@keyframes yh-pulse{
  0%{box-shadow:0 0 0 0 rgba(0,232,206,.55)}
  70%{box-shadow:0 0 0 9px rgba(0,232,206,0)}
  100%{box-shadow:0 0 0 0 rgba(0,232,206,0)}
}
.yh-channelbar__actions{display:flex;align-items:center;gap:10px}
.yh-channelbar .yh-btn{padding:7px 16px;font-size:13px}

/* --- 7. 头部：桅杆导航 ------------------------------------- */
.yh-masthead__inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:64px;padding-block:10px;
}
.yh-brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.yh-brand__mark{
  display:grid;place-items:center;flex:none;
  width:38px;height:38px;border-radius:14px;
  background:linear-gradient(150deg,var(--yh-violet),#0F0D2B 72%);
  color:var(--yh-cyan);font-size:18px;font-weight:900;
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.42),0 0 22px -6px rgba(0,232,206,.55);
}
.yh-brand__text{display:flex;flex-direction:column;line-height:1.1;min-width:0}
.yh-brand__name{font-size:19px;font-weight:900;letter-spacing:.02em;transition:color 160ms var(--yh-ease)}
.yh-brand:hover .yh-brand__name{color:var(--yh-cyan)}
.yh-brand__tag{margin-top:3px;font-size:10.5px;letter-spacing:.16em;color:var(--yh-mist);text-transform:uppercase}
.yh-brand--footer .yh-brand__name{font-size:20px}

.yh-nav{display:flex;align-items:center}
.yh-nav__list{display:flex;align-items:center;gap:2px}
.yh-nav__link{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:var(--yh-pill);
  font-size:15px;font-weight:600;color:var(--yh-text-soft);
  transition:color 160ms var(--yh-ease),background-color 160ms var(--yh-ease),box-shadow 160ms var(--yh-ease);
}
.yh-nav__link:hover{color:var(--yh-cyan);background:rgba(0,232,206,.08)}
.yh-nav__link[aria-current="page"]{
  color:var(--yh-cyan);background:rgba(0,232,206,.12);
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.42);
}
.yh-nav__link[aria-current="page"]::after{
  content:"";position:absolute;left:50%;bottom:-7px;
  width:5px;height:5px;margin-left:-2.5px;border-radius:50%;
  background:var(--yh-orange);
}
.yh-nav__note{display:none;margin-top:22px;font-size:12px;color:var(--yh-mist)}

.yh-navtoggle{
  display:none;align-items:center;gap:10px;
  padding:9px 16px;border-radius:var(--yh-pill);
  color:var(--yh-cyan);font-size:13px;font-weight:700;letter-spacing:.06em;
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.42);
  transition:color 160ms var(--yh-ease),box-shadow 160ms var(--yh-ease);
}
.yh-navtoggle:hover{color:var(--yh-gold);box-shadow:inset 0 0 0 1px rgba(255,200,87,.6)}
.yh-navtoggle__bars{display:inline-flex;flex-direction:column;gap:3px;width:16px;flex:none}
.yh-navtoggle__bars i{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform 200ms var(--yh-ease),opacity 200ms var(--yh-ease)}
.yh-navtoggle__bars i:nth-child(2){width:70%}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(2){opacity:0}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* --- 8. 头部：滚动进度 ------------------------------------- */
.yh-header__meter{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(167,162,208,.16)}
.yh-header__meter span{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--yh-violet),var(--yh-cyan) 55%,var(--yh-orange));
  transition:width 120ms linear;
}

/* --- 9. 页脚 ------------------------------------------------ */
.yh-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  padding:clamp(96px,12vw,150px) 0 32px;
  color:var(--yh-ink);
}
.yh-footer::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:
    radial-gradient(120% 78% at 84% 0%, rgba(0,232,206,.16), transparent 62%),
    radial-gradient(90% 70% at 6% 14%, rgba(91,71,214,.38), transparent 64%),
    linear-gradient(180deg,#241C55 0%,#151238 48%,#0A0A1C 100%);
  clip-path:polygon(0 72px, 100% 0, 100% 100%, 0 100%);
  border-top:0;
}
.yh-footer > *{position:relative;z-index:1}

.yh-footer__grid{
  display:grid;
  grid-template-columns:1.45fr 1fr 1fr 1.35fr;
  gap:36px 32px;
}
.yh-footer__col{min-width:0}
.yh-footer__col--brand{display:flex;flex-direction:column;gap:18px}
.yh-footer__slogan{font-size:19px;font-weight:800;line-height:1.4;color:var(--yh-ink)}
.yh-footer__meta{font-size:12px;color:var(--yh-mist)}
.yh-footer__heading{
  position:relative;
  margin-bottom:16px;padding-left:16px;
  font-size:13px;font-weight:700;letter-spacing:.14em;
  color:var(--yh-mist);
}
.yh-footer__heading::before{
  content:"";position:absolute;left:0;top:.45em;
  width:7px;height:7px;border-radius:2px;
  background:var(--yh-cyan);transform:rotate(45deg);
}
.yh-footer__list{display:grid;gap:2px}
.yh-footer__list--meta{gap:12px}
.yh-footer__link{
  display:inline-block;padding:6px 0;
  font-size:15px;color:var(--yh-text-soft);
  border-bottom:1px solid transparent;
  transition:color 160ms var(--yh-ease),border-color 160ms var(--yh-ease);
}
.yh-footer__link:hover{color:var(--yh-cyan);border-bottom-color:rgba(0,232,206,.45)}

.yh-footer__row{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;gap:12px;
}
.yh-footer__label{font-size:12.5px;color:var(--yh-mist);white-space:nowrap}
.yh-footer__value{font-size:13.5px;color:var(--yh-ink);min-width:0;overflow-wrap:anywhere}
.yh-footer__note{margin-top:16px;font-size:12.5px;line-height:1.7;color:var(--yh-mist);max-width:34ch}

.yh-copy{
  padding:3px 9px;border-radius:var(--yh-pill);
  font-size:11px;letter-spacing:.08em;color:var(--yh-cyan);
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.4);
  transition:color 160ms var(--yh-ease),box-shadow 160ms var(--yh-ease);
}
.yh-copy:hover{color:var(--yh-gold);box-shadow:inset 0 0 0 1px rgba(255,200,87,.6)}
.yh-copy[data-copied]{color:var(--yh-gold);box-shadow:inset 0 0 0 1px rgba(255,200,87,.6)}

.yh-footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  margin-top:clamp(40px,5vw,64px);padding-top:22px;
  border-top:1px solid rgba(167,162,208,.18);
}
.yh-legal__line{font-size:12px;letter-spacing:.08em;color:var(--yh-mist)}

/* --- 10. 回到顶部 ------------------------------------------ */
.yh-totop{
  position:fixed;right:18px;bottom:18px;z-index:75;
  display:grid;place-items:center;
  width:50px;height:50px;border-radius:50%;
  background:rgba(21,18,56,.94);color:var(--yh-cyan);font-size:18px;
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.45),0 16px 32px -16px rgba(0,0,0,.95);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity 200ms var(--yh-ease),transform 200ms var(--yh-ease),visibility 200ms var(--yh-ease),color 160ms var(--yh-ease);
}
.yh-totop.is-visible{opacity:1;visibility:visible;transform:none}
.yh-totop:hover{color:var(--yh-gold)}

/* --- 11. 通用内容组件 -------------------------------------- */
.yh-section{position:relative;padding-block:clamp(48px,7vw,96px)}
.yh-section--tight{padding-block:clamp(28px,4vw,52px)}
.yh-section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px;margin-bottom:clamp(24px,3vw,40px);
}

.yh-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.yh-span-4{grid-column:span 4}
.yh-span-5{grid-column:span 5}
.yh-span-6{grid-column:span 6}
.yh-span-7{grid-column:span 7}
.yh-span-8{grid-column:span 8}
.yh-span-12{grid-column:span 12}

.yh-tile{
  position:relative;isolation:isolate;overflow:hidden;
  padding:clamp(20px,2.6vw,32px);
  border-radius:var(--yh-radius);
  background:linear-gradient(160deg,rgba(36,28,85,.92),rgba(21,18,56,.86));
  transition:background-color 160ms var(--yh-ease);
}
.yh-tile::after{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(167,162,208,.18);
  transition:box-shadow 160ms var(--yh-ease);
}
.yh-tile::before{
  content:"";position:absolute;top:-46px;right:-46px;width:190px;height:190px;z-index:-1;
  border-radius:50%;pointer-events:none;opacity:0;
  background:radial-gradient(circle,rgba(0,232,206,.30),transparent 70%);
  transition:opacity 200ms var(--yh-ease);
}
.yh-tile:hover::after{box-shadow:inset 0 0 0 1px var(--yh-cyan)}
.yh-tile:hover::before{opacity:1}
.yh-tile--focus{
  background:linear-gradient(150deg,rgba(36,28,85,.98),rgba(91,71,214,.42));
  padding:clamp(26px,3.4vw,44px);
}
.yh-tile--focus::after{box-shadow:inset 0 0 0 1px rgba(0,232,206,.34)}

.yh-media{
  position:relative;display:block;width:100%;overflow:hidden;
  border-radius:var(--yh-radius);
  aspect-ratio:16/10;
  background:linear-gradient(140deg,#1B1743,#0F0D29);
}
.yh-media--wide{aspect-ratio:21/9}
.yh-media--tall{aspect-ratio:3/4}
.yh-media--square{aspect-ratio:1/1}
.yh-media img{width:100%;height:100%;object-fit:cover}
.yh-media__label{
  position:absolute;left:14px;bottom:14px;
  padding:5px 12px;border-radius:var(--yh-pill);
  background:rgba(10,10,28,.72);
  font-family:var(--yh-font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--yh-cyan);
}

.yh-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:var(--yh-pill);
  font-size:12.5px;letter-spacing:.06em;
  color:var(--yh-cyan);background:rgba(0,232,206,.10);
  box-shadow:inset 0 0 0 1px rgba(0,232,206,.30);
}
.yh-chip--orange{color:var(--yh-orange);background:rgba(255,122,26,.12);box-shadow:inset 0 0 0 1px rgba(255,122,26,.34)}
.yh-chip--gold{color:var(--yh-gold);background:rgba(255,200,87,.12);box-shadow:inset 0 0 0 1px rgba(255,200,87,.34)}

.yh-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px;padding-block:18px;
  font-family:var(--yh-font-mono);font-size:12px;letter-spacing:.08em;color:var(--yh-mist);
}
.yh-breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.yh-breadcrumb li::after{content:"/";color:rgba(167,162,208,.5)}
.yh-breadcrumb li:last-child::after{content:""}
.yh-breadcrumb a:hover{color:var(--yh-cyan)}
.yh-breadcrumb [aria-current="page"]{color:var(--yh-ink)}

.yh-route{display:grid}
.yh-route__item{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:16px;
  padding:15px 4px;border-bottom:1px dashed var(--yh-line);
}
.yh-route__num{font-family:var(--yh-font-mono);font-size:12px;letter-spacing:.1em;color:var(--yh-orange)}
.yh-route__title{font-size:16px;font-weight:700}
.yh-route__meta{font-family:var(--yh-font-mono);font-size:12.5px;color:var(--yh-mist)}

.yh-index{position:relative;padding-left:18px;border-left:2px solid var(--yh-line)}
.yh-index__link{
  display:block;padding:7px 0;
  font-family:var(--yh-font-mono);font-size:14px;letter-spacing:.04em;
  color:var(--yh-mist);
  transition:color 160ms var(--yh-ease);
}
.yh-index__link::before{
  content:"";display:inline-block;vertical-align:middle;
  width:6px;height:6px;margin-right:10px;border-radius:50%;
  background:currentColor;opacity:.5;
}
.yh-index__link:hover{color:var(--yh-ink)}
.yh-index__link.is-active{color:var(--yh-cyan)}
.yh-index__link.is-active::before{background:var(--yh-orange);opacity:1}

.yh-details{
  border-radius:var(--yh-radius-sm);overflow:hidden;
  background:rgba(36,28,85,.62);
  box-shadow:inset 0 0 0 1px var(--yh-line);
}
.yh-details + .yh-details{margin-top:10px}
.yh-details summary{
  display:flex;align-items:center;gap:12px;
  padding:14px 18px;font-size:15px;font-weight:700;
}
.yh-details summary::before{
  content:"";flex:none;width:8px;height:8px;
  border-right:2px solid var(--yh-cyan);border-bottom:2px solid var(--yh-cyan);
  transform:rotate(45deg);
  transition:transform 220ms var(--yh-ease);
}
.yh-details[open] summary::before{transform:rotate(225deg)}
.yh-details__body{padding:0 18px 18px;font-size:15px;line-height:1.75;color:var(--yh-text-soft)}

.yh-tabs{display:flex;flex-wrap:wrap;gap:6px;padding-bottom:6px;border-bottom:1px solid var(--yh-line)}
.yh-tab{
  position:relative;padding:10px 16px;border-radius:var(--yh-pill);
  font-size:14px;font-weight:700;color:var(--yh-mist);
  transition:color 160ms var(--yh-ease),background-color 160ms var(--yh-ease);
}
.yh-tab:hover{color:var(--yh-ink)}
.yh-tab[aria-selected="true"]{color:var(--yh-cyan);background:rgba(0,232,206,.10)}
.yh-tab[aria-selected="true"]::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-3px;height:2px;
  border-radius:2px;background:var(--yh-cyan);
}
.yh-tab__num{margin-right:6px;font-family:var(--yh-font-mono);font-size:12px;letter-spacing:.08em;color:var(--yh-orange)}
.yh-tabpanel{padding-top:22px}

.yh-prose{max-width:68ch}
.yh-prose h2{margin:2em 0 .6em;font-size:clamp(22px,2.6vw,32px);font-weight:900;line-height:1.2}
.yh-prose h3{margin:1.6em 0 .5em;font-size:19px;font-weight:800}
.yh-prose p{margin-bottom:1.1em;color:var(--yh-text-soft)}
.yh-prose ul{margin-bottom:1.1em}
.yh-prose li{position:relative;margin-bottom:.5em;padding-left:20px;color:var(--yh-text-soft)}
.yh-prose li::before{
  content:"";position:absolute;left:0;top:.72em;
  width:7px;height:7px;border-radius:2px;
  background:var(--yh-cyan);transform:rotate(45deg);
}
.yh-prose a{color:var(--yh-cyan);border-bottom:1px solid rgba(0,232,206,.42)}
.yh-prose strong{color:var(--yh-gold)}

.yh-panel{
  padding:clamp(20px,3vw,36px);
  border-radius:var(--yh-radius);
  background:var(--yh-panel);color:var(--yh-panel-ink);
}
.yh-panel .yh-h2,.yh-panel .yh-h3,.yh-panel .yh-display{color:var(--yh-panel-ink);text-shadow:none;-webkit-text-stroke:0}
.yh-panel .yh-lede,.yh-panel p,.yh-panel li{color:#3A3663}
.yh-panel a{color:#2A1F8F;border-bottom:1px solid rgba(42,31,143,.35)}

/* --- 12. 显现与错峰 ---------------------------------------- */
.yh-reveal-ready [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity 320ms var(--yh-ease),transform 320ms var(--yh-ease);
}
.yh-reveal-ready [data-reveal].is-in{opacity:1;transform:none}
.yh-reveal-ready [data-reveal-group] > [data-reveal]:nth-child(1){transition-delay:0ms}
.yh-reveal-ready [data-reveal-group] > [data-reveal]:nth-child(2){transition-delay:80ms}
.yh-reveal-ready [data-reveal-group] > [data-reveal]:nth-child(3){transition-delay:160ms}
.yh-reveal-ready [data-reveal-group] > [data-reveal]:nth-child(n+4){transition-delay:240ms}

/* --- 13. 响应式 -------------------------------------------- */
@media (max-width:1023px){
  :root{--yh-shell-w:100%;--yh-header-h:108px}
  .yh-footer__grid{grid-template-columns:1fr 1fr;gap:32px 24px}
  .yh-grid{grid-template-columns:repeat(8,minmax(0,1fr));gap:20px}
  .yh-span-4,.yh-span-5{grid-column:span 4}
  .yh-span-6,.yh-span-7,.yh-span-8{grid-column:span 8}
}
@media (max-width:899px){
  :root{--yh-header-h:104px}
  .yh-navtoggle{display:inline-flex}
  .yh-nav{
    position:fixed;top:var(--yh-header-h);right:0;z-index:90;
    display:block;width:min(86vw,360px);
    height:calc(100dvh - var(--yh-header-h));
    padding:24px 24px 40px;overflow-y:auto;
    background:linear-gradient(165deg,#0A0A1C 0%,#151238 55%,#241C55 100%);
    border-left:1px solid rgba(0,232,206,.28);
    box-shadow:-28px 0 64px rgba(0,0,0,.62);
    transform:translateX(102%);
    transition:transform 260ms var(--yh-ease);
  }
  .yh-nav::before{
    content:"";position:absolute;left:0;top:0;bottom:0;width:6px;
    background:repeating-linear-gradient(180deg,rgba(0,232,206,.7) 0 2px,transparent 2px 14px);
    opacity:.7;
  }
  .yh-nav[data-open]{transform:translateX(0)}
  .yh-nav__list{flex-direction:column;align-items:stretch;gap:6px;width:100%}
  .yh-nav__link{
    display:block;width:100%;
    padding:14px 16px;border-radius:14px;
    border-left:2px solid transparent;
    font-size:16px;
  }
  .yh-nav__link[aria-current="page"]{
    box-shadow:none;
    background:rgba(0,232,206,.12);
    border-left-color:var(--yh-orange);
  }
  .yh-nav__link[aria-current="page"]::after{display:none}
  .yh-nav__note{display:block;padding-top:20px;border-top:1px solid var(--yh-line)}
  .yh-masthead__inner{min-height:60px}
}
@media (max-width:640px){
  .yh-shell{width:min(100% - 32px,var(--yh-shell-w))}
  body{font-size:16px}
  .yh-channelbar .yh-btn--outline{display:none}
  .yh-channelbar__route{font-size:11px;letter-spacing:.08em}
  .yh-brand__mark{width:34px;height:34px;border-radius:12px;font-size:16px}
  .yh-brand__name{font-size:17px}
  .yh-brand__tag{font-size:9.5px;letter-spacing:.12em}
  .yh-footer{padding-top:110px}
  .yh-footer::before{clip-path:polygon(0 46px,100% 0,100% 100%,0 100%)}
  .yh-footer__grid{grid-template-columns:1fr;gap:34px}
  .yh-footer__row{grid-template-columns:1fr auto;gap:4px 12px}
  .yh-footer__label{grid-column:1 / -1}
  .yh-footer__legal{flex-direction:column;align-items:flex-start}
  .yh-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
  .yh-span-4,.yh-span-5,.yh-span-6,.yh-span-7,.yh-span-8,.yh-span-12{grid-column:span 4}
  .yh-route__item{grid-template-columns:auto 1fr;gap:6px 12px}
  .yh-route__meta{grid-column:2}
  .yh-totop{right:14px;bottom:14px;width:46px;height:46px}
}

/* --- 14. 减少动态 ------------------------------------------ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:120ms !important;
    transition-property:opacity,visibility,color,background-color,box-shadow !important;
  }
  .yh-nav{transition:none !important}
  .yh-reveal-ready [data-reveal]{transform:none !important}
  .yh-dot{animation:none;box-shadow:0 0 0 4px rgba(0,232,206,.18)}
}