/* 半岛BANDAO体育 · 共享样式 /assets/site.css */

:root{
  --sea-0:#04121F;
  --sea-1:#0A2740;
  --sea-2:#134B73;
  --lava:#FF5A1F;
  --ember:#FF8B4D;
  --cyan:#28F0C2;
  --ice:#F3FAFF;
  --mist:#A7BDCC;
  --line:#2B4052;
  --amber:#FFC857;

  --bg:var(--sea-0);
  --ink:var(--ice);
  --hard-shadow:#010A12;

  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --container:1280px;
  --pad:clamp(16px,4vw,40px);
  --gap:clamp(20px,2.6vw,40px);
  --header-h:76px;
  --radius:2px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
}

body{
  margin:0;
  min-height:100%;
  background-color:var(--sea-0);
  background-image:
    radial-gradient(1000px 620px at 84% -8%, rgba(255,90,31,.16), transparent 68%),
    radial-gradient(840px 560px at 2% 6%, rgba(40,240,194,.09), transparent 72%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(1rem,.94rem + .3vw,1.125rem);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

img,svg,video{display:block;max-width:100%;height:auto}
figure{margin:0}
button{font:inherit;color:inherit;background:none;border:0}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.04em;
  line-height:1.08;
  margin:0;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0}
li{list-style:none}

a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--ember)}

:focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:3px;
  border-radius:1px;
}

#main-content{scroll-margin-top:calc(var(--header-h) + 12px)}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:fixed;
  left:16px;
  top:10px;
  z-index:300;
  padding:10px 20px;
  background:var(--cyan);
  color:var(--sea-0);
  font-family:var(--font-mono);
  font-size:.875rem;
  font-weight:700;
  letter-spacing:.02em;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:var(--sea-0)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.85em 1.5em;
  border:2px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:1rem;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-position .45s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn--primary{
  color:var(--sea-0);
  border-color:var(--hard-shadow);
  background-image:linear-gradient(115deg,var(--lava) 0%,var(--lava) 40%,var(--ember) 58%,var(--lava) 74%);
  background-size:230% 100%;
  background-position:0% 50%;
  box-shadow:5px 5px 0 var(--hard-shadow);
}
.btn--primary:hover{
  color:var(--sea-0);
  background-position:100% 50%;
  transform:translate(-2px,-2px);
  box-shadow:8px 8px 0 var(--hard-shadow);
}
.btn--primary:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--hard-shadow)}
.btn--ghost{
  color:var(--ice);
  border-color:var(--line);
  background:rgba(19,75,115,.18);
}
.btn--ghost:hover{
  color:var(--cyan);
  border-color:var(--cyan);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 var(--hard-shadow);
}
.btn--sm{padding:.62em 1.05em;font-size:.875rem}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;
  inset-inline:0;
  top:0;
  z-index:200;
  background-image:linear-gradient(180deg,rgba(4,18,31,.94) 0%,rgba(4,18,31,.62) 62%,rgba(4,18,31,0) 100%);
  border-bottom:2px solid transparent;
  transition:background-color .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header[data-scrolled]{
  background-color:rgba(4,18,31,.98);
  background-image:linear-gradient(180deg,rgba(10,39,64,.98) 0%,rgba(4,18,31,.98) 100%);
  border-bottom-color:var(--line);
  box-shadow:0 14px 36px rgba(1,10,18,.62);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.site-header__bar{
  position:relative;
  width:min(100% - 2 * var(--pad),var(--container));
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:clamp(14px,2.4vw,36px);
  padding-block:10px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--ice);
  text-decoration:none;
}
.brand:hover{color:var(--ice)}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 auto;
  background:var(--sea-2);
  border:2px solid var(--cyan);
  border-radius:var(--radius);
  box-shadow:3px 3px 0 var(--hard-shadow);
}
.brand__mark::before{
  content:"";
  position:absolute;
  inset:7px auto auto 7px;
  width:12px;
  height:12px;
  background:var(--lava);
  transform:skewY(-8deg);
}
.brand__mark-dot{
  position:absolute;
  right:6px;
  bottom:6px;
  width:8px;
  height:8px;
  background:var(--cyan);
}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.0625rem;
  letter-spacing:-.03em;
  line-height:1.15;
  white-space:nowrap;
}
.brand__tag{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.06em;
  line-height:1.3;
  color:var(--mist);
  white-space:nowrap;
}

/* 主导航 */
.primary-nav{flex:1 1 auto;display:flex;justify-content:flex-end}
.primary-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(4px,1.1vw,18px);
}
.primary-nav__item{display:block}
.nav-link{
  position:relative;
  display:inline-block;
  padding:10px 4px;
  font-size:.9375rem;
  font-weight:500;
  letter-spacing:.01em;
  color:var(--ice);
  text-decoration:none;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:3px;
  background:var(--lava);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.nav-link:hover{color:var(--ice)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan);font-weight:700}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan)}
.nav-cta{display:none}

.header-actions{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  gap:10px;
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:2px solid var(--line);
  border-radius:var(--radius);
  background:rgba(19,75,115,.24);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .18s var(--ease);
}
.nav-toggle__label{line-height:1}
.site-header[data-open] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}
.site-header[data-open] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* 阅读进度 */
.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:3px;
  background:rgba(167,189,204,.12);
  overflow:hidden;
  pointer-events:none;
}
.scroll-progress__fill{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background-image:linear-gradient(90deg,var(--cyan) 0%,var(--amber) 55%,var(--lava) 100%);
  transition:transform .14s linear;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  overflow:hidden;
  background-image:linear-gradient(180deg,var(--sea-0) 0%,var(--sea-1) 46%,#061A2B 100%);
  border-top:2px solid var(--line);
  color:var(--mist);
}
.footer__strip{
  height:10px;
  background-image:linear-gradient(90deg,var(--lava) 0%,var(--ember) 40%,var(--amber) 66%,var(--cyan) 100%);
  transform:skewY(-1.4deg);
  transform-origin:right center;
  margin-bottom:-6px;
}
.footer__top{
  width:min(100% - 2 * var(--pad),var(--container));
  margin-inline:auto;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.55fr);
  gap:clamp(28px,4vw,72px);
  padding-block:clamp(44px,6vw,80px) clamp(32px,4vw,56px);
}
.footer__brand{min-width:0}
.footer__brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,1.1rem + 1.2vw,2.25rem);
  letter-spacing:-.04em;
  line-height:1.05;
  color:var(--ice);
  margin:0 0 12px;
}
.footer__brand-line{
  font-size:.9375rem;
  line-height:1.65;
  color:var(--mist);
  max-width:34ch;
  margin:0 0 22px;
}
.footer__cta{margin-bottom:26px}
.footer__contact{display:grid;gap:10px}
.footer__contact-item{
  display:grid;
  grid-template-columns:56px minmax(0,1fr);
  gap:10px;
  align-items:baseline;
  font-size:.875rem;
  line-height:1.55;
  color:var(--mist);
}
.footer__contact-key{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  color:var(--cyan);
}
.footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
}
.footer__nav-group{
  border-top:2px solid var(--line);
  padding-top:16px;
}
.footer__nav-title{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--amber);
  margin:0 0 14px;
}
.footer__nav-list{display:grid;gap:9px}
.footer-link{
  display:inline-block;
  padding:2px 0;
  font-size:.9375rem;
  color:var(--ice);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__meta{
  border-top:2px solid var(--line);
  background:rgba(4,18,31,.6);
}
.footer__meta-inner{
  width:min(100% - 2 * var(--pad),var(--container));
  margin-inline:auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 28px;
  padding-block:20px 30px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.03em;
  color:var(--mist);
}
.footer__legal{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
.footer__icp{color:var(--ice)}
.footer__copyright{color:var(--mist)}
.footer__note{margin:0;font-size:.75rem;color:var(--mist)}

/* ---------- 通用排版 ---------- */
.container{
  width:min(100% - 2 * var(--pad),var(--container));
  margin-inline:auto;
}
.display{
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.04em;
  line-height:.98;
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{
  content:"";
  width:26px;
  height:2px;
  background:var(--cyan);
}

/* 页面首屏容器 */
.page-hero{
  position:relative;
  padding-top:calc(var(--header-h) + clamp(30px,5vw,64px));
  padding-bottom:clamp(30px,5vw,68px);
}

/* 面包屑 */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--mist);
}
.breadcrumb a{
  color:var(--mist);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:1px;
}
.breadcrumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--ice)}
.breadcrumb__sep{color:var(--line)}

/* 正文阅读容器 */
.prose{max-width:68ch}
.prose h2{
  font-size:clamp(1.5rem,1.2rem + .9vw,2.25rem);
  margin:2em 0 .55em;
  color:var(--ice);
}
.prose h3{
  font-size:clamp(1.1875rem,1.05rem + .5vw,1.5rem);
  margin:1.7em 0 .5em;
  color:var(--ice);
}
.prose p{color:var(--mist);margin:0 0 1.1em}
.prose strong{color:var(--ice)}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em;color:var(--mist)}
.prose ul li{list-style:square}
.prose ol li{list-style:decimal}
.prose li{margin-bottom:.5em}
.prose a{color:var(--cyan);border-bottom:2px solid rgba(40,240,194,.4)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose blockquote{
  margin:1.6em 0;
  padding:16px 20px;
  border-left:4px solid var(--lava);
  background:rgba(19,75,115,.28);
  color:var(--ice);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:var(--gap)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.span-4{grid-column:span 4}
.span-6{grid-column:span 6}
.span-8{grid-column:span 8}
.span-12{grid-column:span 12}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background-color:var(--sea-1);
  background-image:
    radial-gradient(120% 90% at 22% 6%, rgba(40,240,194,.16), transparent 60%),
    radial-gradient(110% 100% at 88% 96%, rgba(255,90,31,.22), transparent 62%);
  border:2px solid var(--line);
  border-radius:var(--radius);
}
.media-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
  filter:saturate(1.06) contrast(1.04);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(200deg,rgba(40,240,194,.16) 0%,transparent 46%,rgba(255,90,31,.2) 100%);
}
.media-frame--ratio-16x9{aspect-ratio:16 / 9}
.media-frame--ratio-4x3{aspect-ratio:4 / 3}
.media-frame--ratio-1x1{aspect-ratio:1 / 1}
.media-frame--tilt{transform:skewY(-1.6deg)}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  margin:0;
  padding:8px 14px;
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.04em;
  color:var(--sea-0);
  background:var(--cyan);
}

/* 斜切章节分隔 */
.slice{
  height:clamp(24px,4vw,52px);
  margin-block:clamp(28px,4vw,56px);
  background-image:linear-gradient(90deg,var(--sea-2) 0%,var(--sea-1) 45%,var(--sea-0) 100%);
  border-top:2px solid var(--line);
  transform:skewY(-1.4deg);
  transform-origin:left center;
}

/* ---------- 章节高亮状态 ---------- */
[data-section]{position:relative}
[data-section][data-active]::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  background:var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .brand__tag{display:none}
  .nav-link{font-size:.875rem;padding:10px 3px}
}

@media (max-width:960px){
  :root{--header-h:64px}

  .primary-nav{
    position:fixed;
    left:0;
    right:0;
    top:var(--header-h);
    display:none;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    padding:6px var(--pad) 28px;
    background-color:var(--sea-0);
    background-image:linear-gradient(180deg,var(--sea-1) 0%,var(--sea-0) 62%);
    border-bottom:2px solid var(--line);
    box-shadow:0 24px 48px rgba(1,10,18,.7);
  }
  .site-header[data-open] .primary-nav{display:flex;animation:navDrop .22s var(--ease)}
  @keyframes navDrop{
    from{opacity:0;transform:translateY(-8px)}
    to{opacity:1;transform:translateY(0)}
  }
  .primary-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
  }
  .primary-nav__item{border-bottom:1px solid var(--line)}
  .nav-link{
    display:block;
    width:100%;
    padding:16px 4px;
    font-size:1.0625rem;
    font-weight:500;
  }
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{
    color:var(--cyan);
    padding-left:14px;
  }
  .nav-link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:6px;
    height:22px;
    margin-top:-11px;
    background:var(--cyan);
  }
  .nav-cta{
    display:inline-flex;
    margin-top:22px;
    align-self:flex-start;
  }
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}

  .footer__top{grid-template-columns:1fr}
  .footer__nav{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}
}

@media (max-width:900px){
  .span-4,.span-6,.span-8{grid-column:span 12}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-4,.span-6,.span-8,.span-12{grid-column:1 / -1}
}

@media (max-width:600px){
  :root{--header-h:60px;--gap:18px}
  .brand__mark{width:34px;height:34px}
  .brand__name{font-size:.975rem}
  .nav-toggle__label{display:none}
  .footer__contact-item{grid-template-columns:1fr;gap:2px}
  .footer__contact-key{letter-spacing:.12em}
  .footer__meta-inner{flex-direction:column;align-items:flex-start;gap:8px}
  .prose{max-width:none}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
  .btn--primary:hover,.btn--ghost:hover{transform:none}
}