/* ===== 足彩网竞彩站 · 共享外壳 /assets/site.css ===== */

:root{
  --ink-950:#0A1420;
  --ink-900:#0D1B2A;
  --ink-800:#122438;
  --ink-700:#1A3350;
  --green:#16D07C;
  --green-deep:#0C8F55;
  --orange:#FF5B2E;
  --amber:#FFC24B;
  --cyan:#4FD1FF;
  --text:#C6D3DF;
  --muted:#8A9BB0;
  --white:#FFFFFF;
  --mist:#EDF2F6;
  --line:rgba(79,209,255,.18);
  --line-soft:rgba(198,211,223,.12);
  --shell:1200px;
  --gutter:clamp(16px,4vw,40px);
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:160ms;
}

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

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

body{
  margin:0;
  min-height:100%;
  background-color:var(--ink-950);
  background-image:
    linear-gradient(rgba(79,209,255,.042) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,209,255,.042) 1px,transparent 1px),
    radial-gradient(circle at 80% -8%,rgba(22,208,124,.16),transparent 46%),
    radial-gradient(circle at 6% 14%,rgba(255,91,46,.09),transparent 40%);
  background-size:72px 72px,72px 72px,auto,auto;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,picture,svg,video{max-width:100%;display:block;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;}
a{color:var(--cyan);text-decoration:none;}
a:hover{color:var(--green);}

h1,h2,h3,h4{margin:0;color:var(--white);font-weight:900;line-height:1.16;letter-spacing:-.01em;}
p{margin:0;}

::selection{background-color:var(--green);color:var(--ink-950);}

:focus-visible{
  outline:2px solid var(--green);
  outline-offset:3px;
  border-radius:2px;
}

.mono{
  font-family:var(--font-mono);
  font-size:.92em;
  letter-spacing:.04em;
}

.num{
  font-family:var(--font-mono);
  font-size:clamp(26px,3.6vw,42px);
  letter-spacing:.02em;
  color:var(--white);
  line-height:1.1;
}

.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.page-body{padding-top:clamp(110px,14vh,152px);}

.hairline{height:1px;border:0;margin:0;background-color:var(--line-soft);}

.slash-divider{
  position:relative;
  height:1px;
  margin-block:clamp(28px,4vw,52px);
  background-color:var(--line-soft);
}
.slash-divider::after{
  content:"";
  position:absolute;
  right:10%;
  top:-7px;
  width:72px;
  height:1px;
  background-color:var(--green);
  transform:rotate(-14deg);
  transform-origin:right center;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:200;
  padding:10px 16px;
  background-color:var(--green);
  color:var(--ink-950);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px;color:var(--ink-950);}

/* ---------- 头部 ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:120;
  background-color:transparent;
  border-bottom:1px solid transparent;
  transition:background-color 240ms var(--ease),border-color 240ms var(--ease),backdrop-filter 240ms var(--ease);
}
.site-header[data-state="solid"]{
  background-color:rgba(10,20,32,.955);
  border-bottom-color:var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.site-header__rail{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px 18px;
  padding:9px 0 10px;
  border-bottom:1px solid rgba(79,209,255,.1);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--muted);
}

.status-strip{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px 18px;
}
.status-strip__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
}
.status-strip__cta{
  margin-left:auto;
  color:var(--green);
  padding-bottom:1px;
  border-bottom:1px solid rgba(22,208,124,.42);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.status-strip__cta:hover{color:var(--white);border-bottom-color:var(--white);}

.status-dot{
  width:8px;
  height:8px;
  flex:none;
  border-radius:50%;
  background-color:var(--green);
  box-shadow:0 0 0 3px rgba(22,208,124,.18);
}
.status-dot--ok{background-color:var(--green);}
.status-dot--alert{
  background-color:var(--orange);
  box-shadow:0 0 0 3px rgba(255,91,46,.18);
}

.site-header__bar{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,34px);
  padding:13px 0 15px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
  color:var(--white);
}
.brand:hover{color:var(--white);}
.brand__mark{
  width:26px;
  height:26px;
  flex:none;
  background-color:var(--green);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%);
  box-shadow:inset 0 0 0 6px rgba(10,20,32,.24);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2;}
.brand__name{font-size:17px;font-weight:900;letter-spacing:.01em;}
.brand__sub{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.13em;
  color:var(--green);
  margin-top:2px;
}

.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  margin-left:auto;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
}
.site-nav__link{
  position:relative;
  display:block;
  padding:8px 2px;
  color:var(--text);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  transition:color 140ms var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:2px;
  background-color:var(--green);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.site-nav__link:hover{color:var(--white);}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--green);}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}

.utility-nav{
  display:flex;
  align-items:center;
  gap:16px;
  padding-left:clamp(10px,1.6vw,22px);
  border-left:1px solid var(--line-soft);
}
.utility-nav__link{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
  transition:color 140ms var(--ease);
}
.utility-nav__link:hover{color:var(--green);}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 14px;
  background-color:transparent;
  border:1px solid var(--line);
  color:var(--white);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  cursor:pointer;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:border-color 140ms var(--ease),background-color 140ms var(--ease);
}
.nav-toggle:hover{border-color:var(--green);background-color:rgba(22,208,124,.1);}
.nav-toggle__bars{
  display:block;
  width:16px;
  height:12px;
  background-image:
    linear-gradient(currentColor,currentColor),
    linear-gradient(currentColor,currentColor),
    linear-gradient(currentColor,currentColor);
  background-size:100% 2px;
  background-position:0 0,0 5px,0 10px;
  background-repeat:no-repeat;
  transition:background-position var(--dur) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{
  background-position:0 5px,0 5px,0 5px;
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  background-image:linear-gradient(90deg,var(--green),var(--cyan));
  transition:width 80ms linear;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,130px);
  background-color:var(--ink-900);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:-1px;
  height:2px;
  background-image:linear-gradient(90deg,transparent,var(--green) 20%,var(--cyan) 58%,transparent);
  opacity:.7;
}

.footer-top{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:20px 40px;
  padding:clamp(32px,5vw,56px) 0 clamp(20px,3vw,30px);
  border-bottom:1px solid var(--line-soft);
}
.footer-brand__name{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:900;
  color:var(--white);
  letter-spacing:-.01em;
}
.footer-brand__note{
  margin-top:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}
.footer-hint{
  max-width:46ch;
  font-size:13.5px;
  line-height:1.7;
  color:var(--muted);
}
.footer-hint__label{
  display:inline-block;
  margin-right:8px;
  padding:2px 7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--orange);
  border:1px solid rgba(255,91,46,.4);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(170px,1fr));
  gap:clamp(20px,3vw,40px);
  padding:clamp(26px,4vw,46px) 0;
}
.footer-col__title{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.16em;
  color:var(--green);
}
.footer-col__title::after{
  content:"";
  flex:1;
  height:1px;
  background-color:var(--line-soft);
}
.footer-col__list{display:grid;gap:10px;}
.footer-link{
  display:inline-block;
  color:var(--text);
  font-size:14.5px;
  border-bottom:1px solid transparent;
  transition:color 140ms var(--ease),border-color 140ms var(--ease);
}
.footer-link:hover{color:var(--white);border-bottom-color:var(--green);}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:13.5px;
  color:var(--muted);
}

.copy-btn{
  padding:3px 8px;
  background-color:transparent;
  border:1px solid rgba(22,208,124,.45);
  color:var(--green);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  cursor:pointer;
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
  transition:background-color 140ms var(--ease),color 140ms var(--ease);
}
.copy-btn:hover{background-color:rgba(22,208,124,.16);color:var(--white);}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding:18px 0 clamp(28px,4vw,40px);
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.03em;
  color:var(--muted);
}
.footer-legal__row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
}

/* ---------- 提示条 ---------- */
.toast{
  position:fixed;
  left:50%;
  bottom:28px;
  z-index:300;
  padding:10px 16px;
  background-color:var(--mist);
  color:var(--ink-950);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  opacity:0;
  transform:translate(-50%,12px);
  pointer-events:none;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.toast[data-visible="true"]{opacity:1;transform:translate(-50%,0);}

/* ---------- 布局工具 ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}
.u-span-4{grid-column:span 4;}
.u-span-5{grid-column:span 5;}
.u-span-7{grid-column:span 7;}
.u-span-8{grid-column:span 8;}
.u-span-12{grid-column:span 12;}

.section{
  position:relative;
  padding-block:clamp(42px,6vw,88px);
}
.section-head{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:clamp(20px,3vw,34px);
}
.section-head__index{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  color:var(--green);
}
.section-head__title{
  font-size:clamp(24px,3vw,34px);
  color:var(--white);
}
.section-head__lead{
  max-width:42ch;
  font-size:15px;
  color:var(--muted);
}

.prose{
  max-width:42em;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
}
.prose p{margin-bottom:1.1em;}
.prose p:last-child{margin-bottom:0;}
.prose strong{color:var(--white);}

/* ---------- 面板与状态 ---------- */
.panel{
  padding:clamp(18px,2.4vw,28px);
  background-color:var(--ink-800);
  border:1px solid var(--line-soft);
}
.cut-panel{
  padding:clamp(18px,2.4vw,28px);
  background-color:var(--ink-800);
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,22px 100%,0 calc(100% - 22px));
}

.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 10px;
  background-color:rgba(22,208,124,.12);
  border:1px solid rgba(22,208,124,.35);
  color:var(--green);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
}
.status-pill--alert{
  background-color:rgba(255,91,46,.12);
  border-color:rgba(255,91,46,.4);
  color:var(--orange);
}
.tag{
  display:inline-block;
  padding:2px 7px;
  border:1px solid rgba(255,194,75,.36);
  color:var(--amber);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 20px;
  border:1px solid transparent;
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.02em;
  cursor:pointer;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background-color 140ms var(--ease),color 140ms var(--ease),border-color 140ms var(--ease);
}
.btn--primary{background-color:var(--green);color:var(--ink-950);}
.btn--primary:hover{background-color:#38E193;color:var(--ink-950);}
.btn--ghost{border-color:var(--line);color:var(--white);}
.btn--ghost:hover{border-color:var(--green);background-color:rgba(22,208,124,.1);color:var(--green);}
.btn--alert{border-color:rgba(255,91,46,.5);color:var(--orange);}
.btn--alert:hover{background-color:rgba(255,91,46,.15);color:var(--white);}

/* ---------- 行条目 ---------- */
.entry{
  display:block;
  padding:15px 18px;
  background-color:var(--ink-800);
  color:var(--text);
  transition:background-color 140ms var(--ease),transform 140ms var(--ease),color 140ms var(--ease);
}
.entry:hover{background-color:var(--ink-700);color:var(--white);transform:translateY(-2px);}

/* ---------- 索引导轨 ---------- */
.index-rail{
  position:sticky;
  top:128px;
  display:flex;
  flex-direction:column;
  gap:12px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
}
.index-rail__link{
  padding-left:12px;
  border-left:2px solid rgba(79,209,255,.2);
  color:var(--muted);
  transition:color 140ms var(--ease),border-color 140ms var(--ease);
}
.index-rail__link:hover{color:var(--white);border-left-color:var(--cyan);}
.index-rail__link[aria-current]{color:var(--green);border-left-color:var(--green);}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:14px;}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;}
.breadcrumb__item::after{
  content:"/";
  margin-left:8px;
  color:rgba(198,211,223,.32);
}
.breadcrumb__item:last-child::after{content:"";}
.breadcrumb__link{
  color:var(--text);
  border-bottom:1px solid transparent;
  transition:color 140ms var(--ease),border-color 140ms var(--ease);
}
.breadcrumb__link:hover{color:var(--green);border-bottom-color:var(--green);}
.breadcrumb__current{color:var(--white);}

/* ---------- 图片容器 ---------- */
.media-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:clamp(14px,2vw,22px);
}
.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  background-color:var(--ink-800);
  border:1px solid var(--line-soft);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(79,209,255,.1) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,209,255,.1) 1px,transparent 1px);
  background-size:34px 34px;
}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.06);
}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--tall{aspect-ratio:4/5;}
.media-frame--cut{clip-path:polygon(0 0,calc(100% - 26px) 0,100% 26px,100% 100%,0 100%);}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  padding:8px 12px;
  background-color:rgba(10,20,32,.86);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
}

/* ---------- 移动端 ---------- */
@media (max-width:979px){
  .site-header__rail{padding:6px 0 7px;font-size:10.5px;gap:3px 12px;}
  .site-header__bar{padding:10px 0 12px;gap:12px;}
  .brand__name{font-size:15px;}
  .brand__sub{font-size:9.5px;letter-spacing:.1em;}

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

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:6px var(--gutter) 20px;
    background-color:rgba(10,20,32,.985);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 110px);
    max-height:calc(100dvh - 110px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:flex;}

  .site-nav__list{flex-direction:column;gap:0;}
  .site-nav__item{border-bottom:1px solid var(--line-soft);}
  .site-nav__link{padding:14px 2px;font-size:16px;}
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    margin-right:10px;
    vertical-align:middle;
    border-radius:50%;
    background-color:var(--green);
  }

  .utility-nav{
    justify-content:flex-start;
    gap:20px;
    margin-top:14px;
    padding:14px 0 0;
    border-left:0;
    border-top:1px solid var(--line);
  }
  .utility-nav__link{font-size:12.5px;}

  .grid-12{gap:18px;}
  .u-span-4,.u-span-5,.u-span-7,.u-span-8{grid-column:span 12;}

  .footer-top{align-items:flex-start;}
  .footer-hint{max-width:100%;}
  .footer-legal{justify-content:flex-start;}
  .index-rail{position:static;top:auto;flex-direction:row;flex-wrap:wrap;gap:10px 16px;}
}

@media (max-width:520px){
  .site-header__rail{border-bottom-color:transparent;}
  .status-strip__cta{margin-left:0;}
  .footer-col__title::after{display:none;}
  .btn{width:100%;justify-content:center;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .entry:hover{transform:none;}
  .site-nav__link:hover::after{transform:scaleX(1);}
}