/* ===== YABO888VIP赛场 · /assets/site.css ===== */

:root{
  --snow:#F6F5EF;
  --stone:#DDE3DA;
  --navy:#0B2A4A;
  --night:#06192D;
  --teal:#1D7F7A;
  --jade:#2FB3A3;
  --red:#C53B2F;
  --orange:#E8752B;
  --clay:#9C6B4E;
  --muted:#4E6172;
  --paper:#FCFCF7;
  --line:rgba(11,42,74,.16);
  --line-soft:rgba(11,42,74,.09);
  --font-cn:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;
  --wrap:1180px;
  --shadow-1:0 1px 0 rgba(11,42,74,.05),0 12px 26px -20px rgba(6,25,45,.55);
  --shadow-2:0 2px 0 rgba(11,42,74,.06),0 22px 44px -30px rgba(6,25,45,.7);
}

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:var(--font-cn);
  font-size:17px;
  line-height:1.75;
  color:var(--navy);
  background-color:var(--snow);
  background-image:linear-gradient(180deg,rgba(221,227,218,.42),rgba(246,245,239,0) 340px);
  -webkit-font-smoothing:antialiased;
}

img,svg,video{max-width:100%;height:auto;}

h1,h2,h3,h4{
  margin:0 0 .5em;
  color:var(--navy);
  font-weight:800;
  line-height:1.18;
  letter-spacing:-.02em;
}
h1{font-size:clamp(2rem,4.2vw,3.2rem);}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);}
h3{font-size:1.18rem;letter-spacing:-.01em;}
h4{font-size:1rem;letter-spacing:0;}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{color:var(--teal);text-decoration-thickness:1px;text-underline-offset:3px;}

ul,ol{padding-left:1.25em;}

strong,b{font-weight:700;}

::selection{background:var(--orange);color:var(--night);}

:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:3px;
}
.site-footer :focus-visible{
  outline-color:var(--jade);
}

#main-content:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:-6px;
}

/* ===== 布局容器 ===== */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:24px;
}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 20px;
  border:1px solid var(--navy);
  border-radius:2px;
  background:transparent;
  color:var(--navy);
  font:inherit;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn--solid{background:var(--navy);color:var(--snow);}
.btn--solid:hover{background:var(--night);border-color:var(--night);color:var(--snow);}
.btn--signal{background:var(--orange);border-color:var(--orange);color:var(--night);}
.btn--signal:hover{background:var(--night);border-color:var(--night);color:var(--orange);}
.btn--ghost{background:transparent;border-color:var(--line);color:var(--navy);}
.btn--ghost:hover{border-color:var(--navy);background:var(--stone);}

/* ===== 标签 ===== */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 8px;
  border:1px solid rgba(11,42,74,.14);
  border-radius:2px;
  background:var(--stone);
  color:var(--navy);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.4;
}
.tag--red{
  background:rgba(197,59,47,.1);
  border-color:rgba(197,59,47,.34);
  color:#8E2A21;
}
.tag--jade{
  background:rgba(47,179,163,.14);
  border-color:rgba(47,179,163,.42);
  color:#166B62;
}

/* ===== 注释 ===== */
.anno{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--teal);
}
.anno--vertical{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  letter-spacing:.3em;
}

/* ===== 堆叠画板 ===== */
.stack-panel{
  position:relative;
  padding:28px 26px;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--paper);
  box-shadow:var(--shadow-1);
}
.stack-panel::before{
  content:"";
  position:absolute;
  inset:0 auto 0 0;
  width:3px;
  background:var(--teal);
  pointer-events:none;
}

/* ===== 斜线分隔 ===== */
.rule-slash{
  height:14px;
  border:0;
  margin:0;
  background-image:repeating-linear-gradient(115deg,var(--line) 0 1px,transparent 1px 12px);
}

/* ===== 面包屑 ===== */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--muted);
}
.breadcrumb__link{
  color:var(--teal);
  text-decoration:none;
}
.breadcrumb__link:hover{text-decoration:underline;}
.breadcrumb__sep{color:rgba(11,42,74,.3);}
.breadcrumb__current{color:var(--navy);}

/* ===== 图片容器基础规则 ===== */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--stone);
  box-shadow:var(--shadow-1);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(11,42,74,.06) 0 1px,transparent 1px 14px);
}
.media-frame img,
.media-frame > .media-shape{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16/9;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame--square{aspect-ratio:1/1;}
.media-shape{
  background-image:
    linear-gradient(155deg,rgba(11,42,74,.86),rgba(29,127,122,.55) 58%,rgba(232,117,43,.42));
}

/* ===== 头部 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(246,245,239,.95);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(8px);
}

.header-strip{
  height:4px;
  background-image:
    repeating-linear-gradient(115deg,rgba(246,245,239,.26) 0 2px,transparent 2px 13px),
    linear-gradient(90deg,var(--navy) 0 42%,var(--teal) 42% 68%,var(--orange) 68% 100%);
}

.header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:24px;
  min-height:78px;
  padding-block:10px;
}

.brand-block{
  display:flex;
  align-items:baseline;
  gap:12px;
  min-width:0;
}

.brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  color:var(--navy);
  text-decoration:none;
}
.brand__mark{
  font-family:var(--font-mono);
  font-size:18px;
  font-weight:700;
  letter-spacing:.02em;
}
.brand__label{
  padding-left:10px;
  border-left:1px solid rgba(11,42,74,.3);
  font-size:15px;
  font-weight:800;
  letter-spacing:.34em;
  color:var(--navy);
  transition:color .18s ease;
}
.brand:hover .brand__label{color:var(--red);}

.brand-note{
  padding-left:12px;
  border-left:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  white-space:nowrap;
}

.site-nav{justify-self:end;min-width:0;}

.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:10px 12px;
  border:1px solid transparent;
  border-radius:2px;
  color:var(--navy);
  font-size:15px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:5px;
  height:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.nav-link:hover{background:var(--stone);border-color:var(--line);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link__index{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--teal);
}
.nav-link[aria-current="page"]{
  background:var(--navy);
  border-color:var(--navy);
  color:var(--snow);
}
.nav-link[aria-current="page"]::after{display:none;}
.nav-link[aria-current="page"] .nav-link__index{color:var(--jade);}

.header-tools{
  display:flex;
  align-items:center;
  gap:8px;
}

.search-trigger{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  border:1px solid var(--orange);
  border-radius:2px;
  background:var(--orange);
  color:var(--night);
  font:inherit;
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.search-trigger::before{
  content:"";
  display:block;
  width:8px;
  height:8px;
  background:var(--night);
  transform:rotate(45deg);
  transition:background-color .18s ease;
}
.search-trigger:hover{
  background:var(--night);
  border-color:var(--night);
  color:var(--orange);
}
.search-trigger:hover::before{background:var(--orange);}

.nav-toggle{
  display:none;
  grid-template-columns:auto auto;
  grid-template-rows:repeat(3,auto);
  align-items:center;
  column-gap:8px;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:2px;
  background:transparent;
  color:var(--navy);
  font:inherit;
  font-size:13px;
  font-weight:600;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle__bar{
  display:block;
  grid-column:1;
  width:14px;
  height:2px;
  border-radius:1px;
  background:var(--navy);
  transition:background-color .18s ease;
}
.nav-toggle__bar:nth-of-type(1){grid-row:1;}
.nav-toggle__bar:nth-of-type(2){grid-row:2;margin-block:3px;}
.nav-toggle__bar:nth-of-type(3){grid-row:3;}
.nav-toggle__text{
  grid-column:2;
  grid-row:1 / 4;
  letter-spacing:.08em;
}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--orange);
  color:var(--orange);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:var(--orange);}

/* ===== 检索浮层 ===== */
.search-layer{
  position:absolute;
  left:0;
  right:0;
  top:100%;
  background:var(--night);
  color:var(--snow);
  border-top:1px solid rgba(246,245,239,.16);
  box-shadow:0 30px 54px -30px rgba(6,25,45,.95);
}
.search-layer[hidden]{display:none;}

.search-panel{padding-block:24px 28px;}

.search-panel__head{
  display:flex;
  align-items:flex-end;
  gap:14px;
  margin-bottom:16px;
}

.search-field{
  display:flex;
  flex:1;
  flex-direction:column;
  gap:6px;
  min-width:0;
}
.search-field__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(246,245,239,.62);
}

.search-input{
  width:100%;
  padding:12px 14px;
  border:1px solid rgba(246,245,239,.26);
  border-radius:2px;
  background:rgba(246,245,239,.06);
  color:var(--snow);
  font-family:var(--font-mono);
  font-size:15px;
  line-height:1.4;
}
.search-input::placeholder{color:rgba(246,245,239,.45);}
.search-input:focus{
  outline:2px solid var(--jade);
  outline-offset:2px;
  border-color:var(--jade);
}

.search-close{
  flex:0 0 auto;
  padding:11px 16px;
  border:1px solid rgba(246,245,239,.28);
  border-radius:2px;
  background:transparent;
  color:var(--snow);
  font:inherit;
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.search-close:hover{background:var(--orange);border-color:var(--orange);color:var(--night);}

.search-results{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:8px;
  margin:0;
  padding:0;
  list-style:none;
}

.search-item[hidden]{display:none;}

.search-item a{
  display:block;
  padding:10px 12px;
  border:1px solid rgba(246,245,239,.18);
  border-radius:2px;
  color:var(--snow);
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.search-item a:hover{
  background:rgba(47,179,163,.18);
  border-color:var(--jade);
  color:#fff;
}
.search-item__meta{
  display:block;
  margin-top:3px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--jade);
}

.search-empty{
  margin:16px 0 0;
  font-size:14px;
  color:rgba(246,245,239,.78);
}
.search-empty[hidden]{display:none;}

/* ===== 阅读进度线 ===== */
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:0;
  height:2px;
  background-image:linear-gradient(90deg,var(--teal),var(--jade) 55%,var(--orange));
  transition:width .12s linear;
}

/* ===== 跳过导航 ===== */
.skip-link{
  position:absolute;
  left:16px;
  top:-80px;
  z-index:120;
  padding:12px 18px;
  border-radius:2px;
  background:var(--navy);
  color:var(--snow);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  text-decoration:none;
  transition:top .18s ease;
}
.skip-link:focus{top:14px;}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;
  margin-top:64px;
  background-image:linear-gradient(180deg,var(--navy) 0%,var(--night) 66%);
  color:var(--snow);
}

.footer-edge{
  height:8px;
  background-image:
    repeating-linear-gradient(115deg,rgba(6,25,45,.28) 0 2px,transparent 2px 12px),
    linear-gradient(90deg,var(--orange) 0 20%,var(--jade) 20% 34%,var(--navy) 34% 100%);
}

.footer-inner{
  display:grid;
  grid-template-columns:minmax(230px,1.15fr) minmax(150px,.75fr) minmax(240px,1.3fr);
  gap:44px;
  padding-block:56px 40px;
}

.footer-brand{min-width:0;}

.footer-brand__name{
  display:inline-block;
  color:var(--snow);
  font-size:20px;
  font-weight:800;
  letter-spacing:.02em;
  text-decoration:none;
  border-bottom:1px solid rgba(246,245,239,.22);
  padding-bottom:4px;
  transition:color .18s ease,border-color .18s ease;
}
.footer-brand__name:hover{color:var(--orange);border-color:rgba(232,117,43,.6);}

.footer-brand__note{
  margin:16px 0 18px;
  max-width:28em;
  font-size:14px;
  line-height:1.75;
  color:rgba(246,245,239,.72);
}

.footer-stamp{
  display:inline-block;
  padding:5px 9px;
  border:1px solid rgba(47,179,163,.5);
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--jade);
}

.footer-icp{
  margin:16px 0 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
  color:rgba(246,245,239,.6);
}

.footer-col{min-width:0;}

.footer-col__title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--jade);
}

.footer-list{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
}
.footer-list a{
  display:inline-block;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  color:rgba(246,245,239,.86);
  font-size:15px;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.footer-list a:hover{color:var(--orange);border-color:rgba(232,117,43,.6);}

.footer-meta{
  display:grid;
  gap:10px;
  margin:0;
}
.footer-meta__row{
  display:grid;
  grid-template-columns:52px 1fr;
  gap:10px;
  align-items:baseline;
  padding-bottom:9px;
  border-bottom:1px solid rgba(246,245,239,.1);
}
.footer-meta__row:last-child{border-bottom:0;padding-bottom:0;}
.footer-meta dt{
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(246,245,239,.5);
}
.footer-meta dd{
  margin:0;
  font-size:14px;
  line-height:1.6;
  color:rgba(246,245,239,.9);
  word-break:break-word;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-block:20px 30px;
  border-top:1px solid rgba(246,245,239,.14);
}
.footer-bottom .footer-icp{margin:0;}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:13px;
}
.footer-legal a{
  color:rgba(246,245,239,.8);
  text-decoration:none;
  border-bottom:1px solid rgba(246,245,239,.26);
  padding-bottom:1px;
  transition:color .18s ease,border-color .18s ease;
}
.footer-legal a:hover{color:var(--orange);border-color:rgba(232,117,43,.7);}

/* ===== 平板 ===== */
@media (max-width:1080px){
  .brand-note{display:none;}
  .nav-link{padding:10px 9px;font-size:14px;}
  .footer-inner{
    grid-template-columns:minmax(200px,1fr) minmax(140px,.7fr);
    gap:32px;
  }
  .footer-col:last-child{grid-column:1 / -1;}
}

/* ===== 移动 ===== */
@media (max-width:960px){
  .wrap{padding-inline:18px;}

  .site-header .wrap{padding-inline:18px;}

  .header-inner{
    grid-template-columns:1fr auto;
    grid-template-areas:
      "brand tools"
      "nav nav";
    gap:8px 12px;
    padding-block:10px 0;
    min-height:0;
  }
  .brand-block{grid-area:brand;}
  .header-tools{grid-area:tools;}
  .site-nav{grid-area:nav;justify-self:stretch;width:auto;}
  .nav-toggle{display:grid;}

  .site-nav{
    margin-inline:-18px;
    border-top:1px solid var(--line-soft);
    background:rgba(221,227,218,.35);
  }

  .nav-list{
    flex-wrap:nowrap;
    gap:0;
    overflow-x:auto;
    padding:2px 18px 0;
    scrollbar-width:thin;
    -webkit-overflow-scrolling:touch;
  }
  .nav-list::-webkit-scrollbar{height:3px;}
  .nav-list::-webkit-scrollbar-thumb{background:rgba(11,42,74,.22);border-radius:2px;}

  .nav-link{
    padding:11px 14px;
    border:0;
    border-bottom:2px solid transparent;
    border-radius:0;
    background:transparent;
    font-size:14px;
  }
  .nav-link::after{display:none;}
  .nav-link:hover{background:rgba(246,245,239,.9);}
  .nav-link[aria-current="page"]{
    background:transparent;
    border-color:transparent;
    border-bottom-color:var(--orange);
    color:var(--navy);
  }
  .nav-link[aria-current="page"] .nav-link__index{color:var(--red);}

  .site-nav[data-open]{background:var(--snow);}
  .site-nav[data-open] .nav-list{
    flex-direction:column;
    overflow:visible;
    padding:6px 18px 14px;
  }
  .site-nav[data-open] .nav-link{
    width:100%;
    justify-content:space-between;
    padding:12px 10px;
    border-bottom:1px solid var(--line-soft);
    border-left:3px solid transparent;
  }
  .site-nav[data-open] .nav-link[aria-current="page"]{
    background:rgba(221,227,218,.6);
    border-bottom-color:var(--line-soft);
    border-left-color:var(--orange);
  }

  .search-panel__head{flex-wrap:wrap;align-items:stretch;}
  .search-close{width:100%;}
  .search-results{grid-template-columns:1fr 1fr;}

  .footer-inner{
    grid-template-columns:1fr;
    gap:32px;
    padding-block:44px 32px;
  }
  .footer-col:last-child{grid-column:auto;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

@media (max-width:600px){
  body{font-size:16px;}
  .brand__mark{font-size:16px;}
  .brand__label{font-size:13px;letter-spacing:.24em;}
  .search-trigger{padding:9px 12px;font-size:13px;letter-spacing:.02em;}
  .search-results{grid-template-columns:1fr;}
  .footer-meta__row{grid-template-columns:48px 1fr;}
  .stack-panel{padding:22px 18px;}
}

/* ===== 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;
  }
  .scroll-progress{transition:none;}
  .btn:hover{transform:none;}
}