/* ==========================================================================
   斗鱼赛事 · 共享站点样式 /assets/site.css
   蓝图格网 / 演播深蓝 / 品牌橙脉冲
   ========================================================================== */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- 2. tokens ---------- */
:root{
  --sd-deep:#071C33;
  --sd-panel:#0E2C4A;
  --sd-orange:#FF6B1A;
  --sd-cyan:#21D4E0;
  --sd-grid:#2C4A66;
  --sd-lime:#9CFF57;
  --sd-white:#EAF2F8;
  --sd-mist:#A8BFD4;
  --sd-paper:#F4F7FA;
  --sd-ink:#0B1B2B;

  --sd-font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --sd-font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --sd-font-data:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --sd-shell:1360px;
  --sd-gutter:clamp(16px,4vw,48px);
  --sd-hair:rgba(44,74,102,.55);
  --sd-ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. base ---------- */
body{
  background-color:var(--sd-deep);
  background-image:
    linear-gradient(to right, rgba(44,74,102,.20) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(44,74,102,.20) 1px, transparent 1px);
  background-size:72px 72px;
  background-attachment:fixed;
  color:var(--sd-white);
  font-family:var(--sd-font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
}
::selection{background:var(--sd-orange);color:#071C33}

/* ---------- 4. 无障碍 ---------- */
.sd-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--sd-cyan);outline-offset:2px}
.sd-skip{
  position:absolute;left:12px;top:-120px;z-index:200;
  background:var(--sd-orange);color:#071C33;
  padding:10px 18px;font-size:13px;font-weight:700;letter-spacing:.1em;
  transition:top .18s var(--sd-ease);
}
.sd-skip:focus{top:12px}

/* ---------- 5. header ---------- */
.sd-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,28,51,.94);
  border-bottom:1px solid var(--sd-grid);
  color:var(--sd-white);
  -webkit-backdrop-filter:blur(10px) saturate(140%);
  backdrop-filter:blur(10px) saturate(140%);
}
.sd-header__frame{
  max-width:var(--sd-shell);
  margin:0 auto;
  padding:0 var(--sd-gutter);
  min-height:76px;
  display:grid;
  grid-template-columns:auto 1fr auto auto;
  align-items:center;
  gap:clamp(14px,3vw,40px);
}
.sd-header__progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:0;
  background:linear-gradient(90deg,var(--sd-orange),var(--sd-cyan));
  transition:width .12s linear;
}
.sd-brand{grid-column:1;display:flex;align-items:center;gap:12px;min-width:0}
.sd-brand__mark{
  width:10px;height:28px;flex:none;
  background:var(--sd-orange);
  box-shadow:0 0 18px rgba(255,107,26,.55);
  animation:sd-pulse 2.4s ease-in-out infinite;
}
.sd-brand__link{display:flex;flex-direction:column;min-width:0}
.sd-brand__name{font-family:var(--sd-font-display);font-weight:900;font-size:20px;line-height:1.15;letter-spacing:.02em}
.sd-brand__domain{font-family:var(--sd-font-data);font-size:11px;line-height:1.4;letter-spacing:.14em;color:var(--sd-mist)}

/* ---------- 6. nav ---------- */
.sd-nav{grid-column:3;justify-self:end;min-width:0;display:block}
.sd-nav__list{display:flex;align-items:center;gap:clamp(10px,1.7vw,26px)}
.sd-nav__item{position:relative}
.sd-nav__link{position:relative;display:flex;align-items:baseline;gap:6px;padding:9px 2px;color:var(--sd-mist);transition:color .2s var(--sd-ease)}
.sd-nav__index{font-family:var(--sd-font-data);font-size:10px;letter-spacing:.08em;color:var(--sd-grid);transition:color .2s var(--sd-ease)}
.sd-nav__label{font-size:13px;font-weight:500;letter-spacing:.12em;white-space:nowrap}
.sd-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:var(--sd-orange);
  transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--sd-ease);
}
.sd-nav__link:hover{color:var(--sd-white)}
.sd-nav__link:hover .sd-nav__index{color:var(--sd-cyan)}
.sd-nav__link:hover::after{transform:scaleX(1)}
.sd-nav__link[aria-current="page"]{color:var(--sd-white)}
.sd-nav__link[aria-current="page"] .sd-nav__index{color:var(--sd-orange)}
.sd-nav__link[aria-current="page"]::after{transform:scaleX(1);box-shadow:0 0 12px rgba(255,107,26,.75)}
.sd-nav__rule{display:none}

/* ---------- 7. utility + index panel ---------- */
.sd-utility{grid-column:4;justify-self:end;display:flex;align-items:center;gap:10px}
.sd-indexbtn{
  width:36px;height:36px;flex:none;
  display:grid;place-items:center;
  border:1px solid var(--sd-grid);
  color:var(--sd-mist);
  transition:border-color .2s var(--sd-ease),color .2s var(--sd-ease),background .2s var(--sd-ease);
}
.sd-indexbtn:hover,.sd-indexbtn[aria-expanded="true"]{border-color:var(--sd-cyan);color:var(--sd-cyan);background:rgba(33,212,224,.08)}
.sd-indexpanel{
  position:absolute;top:100%;right:var(--sd-gutter);
  width:min(340px,calc(100vw - 32px));
  background:var(--sd-panel);
  border:1px solid var(--sd-grid);
  border-top:2px solid var(--sd-orange);
  padding:18px;
  display:none;
  z-index:80;
}
.sd-header[data-index-open] .sd-indexpanel{display:block;animation:sd-drop .2s var(--sd-ease) both}
.sd-indexpanel__title{font-size:11px;font-weight:500;letter-spacing:.18em;color:var(--sd-mist)}
.sd-indexpanel__list{margin-top:12px;display:grid;gap:2px}
.sd-indexpanel__link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;font-size:14px;color:var(--sd-white);
  border-left:1px solid transparent;
  transition:background .18s var(--sd-ease),border-color .18s var(--sd-ease);
}
.sd-indexpanel__link:hover{background:rgba(33,212,224,.10);border-left-color:var(--sd-orange)}
.sd-indexpanel__no{font-family:var(--sd-font-data);font-size:11px;color:var(--sd-cyan);letter-spacing:.08em}

/* ---------- 8. 移动导航按钮 ---------- */
.sd-navtoggle{display:none;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--sd-grid);color:var(--sd-white);position:relative;z-index:2}
.sd-navtoggle__bars{width:16px;height:9px;position:relative;display:block}
.sd-navtoggle__bars::before,.sd-navtoggle__bars::after{content:"";position:absolute;left:0;right:0;height:1.5px;background:currentColor}
.sd-navtoggle__bars::before{top:0}
.sd-navtoggle__bars::after{bottom:0}
.sd-navtoggle__text{font-size:12px;font-weight:500;letter-spacing:.16em}

/* ---------- 9. footer ---------- */
.sd-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:var(--sd-panel);
  border-top:1px solid var(--sd-grid);
  color:var(--sd-white);
}
.sd-footer::before{content:"";position:absolute;top:0;left:0;height:2px;width:clamp(80px,18vw,260px);background:var(--sd-orange)}
.sd-footer__frame{max-width:var(--sd-shell);margin:0 auto;padding:clamp(34px,5vw,64px) var(--sd-gutter) 0}
.sd-footer__grid{
  display:grid;
  grid-template-columns:1.2fr 1fr 1.5fr 1fr;
  gap:clamp(20px,3vw,48px);
  padding-bottom:clamp(28px,4vw,48px);
}
.sd-fcol{min-width:0}
.sd-fcol__title{
  font-size:11px;font-weight:500;letter-spacing:.18em;color:var(--sd-mist);
  padding-bottom:10px;border-bottom:1px solid var(--sd-grid);margin-bottom:14px;
}
.sd-fcol--brand .sd-fcol__title{color:var(--sd-mist)}
.sd-fcol__brand{font-family:var(--sd-font-display);font-weight:900;font-size:22px;line-height:1.2;letter-spacing:.02em}
.sd-fcol__meta{font-family:var(--sd-font-data);font-size:12px;letter-spacing:.05em;color:var(--sd-mist);margin-top:6px}
.sd-fcol__list{display:grid;gap:9px;font-size:14px;color:var(--sd-mist);line-height:1.7}
.sd-fcol__value{font-family:var(--sd-font-data);font-size:12.5px;color:var(--sd-white);letter-spacing:.02em;word-break:break-word}
.sd-fcol__note{margin-top:14px;font-size:13px}
.sd-flink{color:var(--sd-white);border-bottom:1px solid transparent;transition:color .2s var(--sd-ease),border-color .2s var(--sd-ease)}
.sd-flink:hover{color:var(--sd-orange);border-bottom-color:var(--sd-orange)}
.sd-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  border-top:1px solid var(--sd-grid);
  padding:16px 0 28px;
  font-size:12px;color:var(--sd-mist);
}
.sd-footer__copy{font-family:var(--sd-font-data);letter-spacing:.04em}
.sd-footer__legal{display:flex;flex-wrap:wrap;gap:18px}

/* ---------- 10. 布局容器 ---------- */
.sd-main{position:relative;z-index:1;display:block}
.sd-container{width:100%;max-width:var(--sd-shell);margin:0 auto;padding:0 var(--sd-gutter)}
.sd-container--narrow{max-width:920px}
.sd-section{position:relative;padding:clamp(40px,6vw,88px) 0}
.sd-section--panel{background:var(--sd-panel)}
.sd-section--line{border-top:1px solid var(--sd-grid)}
.sd-section--paper{background:var(--sd-paper);color:var(--sd-ink)}
.sd-section__head{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:clamp(16px,3vw,48px);align-items:end;
  margin-bottom:clamp(24px,4vw,48px);
}
.sd-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.sd-col-3{grid-column:span 3}
.sd-col-4{grid-column:span 4}
.sd-col-5{grid-column:span 5}
.sd-col-6{grid-column:span 6}
.sd-col-7{grid-column:span 7}
.sd-col-8{grid-column:span 8}
.sd-col-9{grid-column:span 9}
.sd-col-12{grid-column:span 12}

/* ---------- 11. 排版 ---------- */
.sd-display{
  font-family:var(--sd-font-display);font-weight:900;
  font-size:clamp(40px,7vw,96px);line-height:.98;letter-spacing:-.02em;
  font-stretch:condensed;
}
.sd-h2{font-family:var(--sd-font-display);font-weight:900;font-size:clamp(26px,3.4vw,44px);line-height:1.12;letter-spacing:-.01em}
.sd-h3{font-size:clamp(18px,2vw,22px);font-weight:700;line-height:1.35}
.sd-lede{font-size:clamp(16px,1.6vw,19px);line-height:1.8;color:var(--sd-mist);max-width:64ch}
.sd-label{display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:500;letter-spacing:.18em;color:var(--sd-mist)}
.sd-label::before{content:"";width:18px;height:1px;background:var(--sd-orange);flex:none}
.sd-label--cyan::before{background:var(--sd-cyan)}
.sd-num{font-family:var(--sd-font-data);font-size:12px;letter-spacing:.08em;color:var(--sd-cyan)}
.sd-mono{font-family:var(--sd-font-data);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.sd-rule{height:1px;background:var(--sd-grid);border:0;width:100%}
.sd-section--paper .sd-lede,.sd-section--paper .sd-label{color:#41607B}
.sd-section--paper .sd-h2,.sd-section--paper .sd-display,.sd-section--paper .sd-h3{color:var(--sd-ink)}
.sd-section--paper .sd-rule{background:rgba(11,27,43,.18)}
.sd-section--paper .sd-label::before{background:var(--sd-orange)}

/* ---------- 12. 按钮 ---------- */
.sd-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 22px;
  font-size:14px;font-weight:500;letter-spacing:.08em;
  border:1px solid transparent;text-align:center;
  transition:background .22s var(--sd-ease),color .22s var(--sd-ease),border-color .22s var(--sd-ease),box-shadow .22s var(--sd-ease);
}
.sd-btn--primary{background:var(--sd-orange);color:#071C33;font-weight:700}
.sd-btn--primary:hover{background:#FF8340;box-shadow:0 12px 32px -14px rgba(255,107,26,.95)}
.sd-btn--ghost{border-color:var(--sd-grid);color:var(--sd-white)}
.sd-btn--ghost:hover{border-color:var(--sd-cyan);color:var(--sd-cyan);background:rgba(33,212,224,.08)}
.sd-btn--sm{padding:8px 14px;font-size:12.5px;letter-spacing:.1em}

/* ---------- 13. 面包屑 ---------- */
.sd-crumbs{margin:clamp(18px,3vw,34px) 0}
.sd-crumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--sd-font-data);font-size:12px;letter-spacing:.06em;color:var(--sd-mist)}
.sd-crumbs__item{display:flex;align-items:center;gap:8px}
.sd-crumbs__item::after{content:"/";color:var(--sd-grid)}
.sd-crumbs__item:last-child::after{display:none}
.sd-crumbs__link:hover{color:var(--sd-cyan)}
.sd-crumbs__current{color:var(--sd-white)}

/* ---------- 14. 图片容器 ---------- */
.sd-media{position:relative;overflow:hidden;background:var(--sd-panel);border:1px solid var(--sd-grid);display:block}
.sd-media__img{width:100%;height:100%;object-fit:cover}
.sd-media--16x9{aspect-ratio:16/9}
.sd-media--4x3{aspect-ratio:4/3}
.sd-media--1x1{aspect-ratio:1/1}
.sd-media--wide{aspect-ratio:21/9}
.sd-media--gridded::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:
    linear-gradient(to right, rgba(33,212,224,.22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(33,212,224,.22) 1px, transparent 1px);
  background-size:40px 40px;
}
.sd-media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;
  font-family:var(--sd-font-data);font-size:11px;letter-spacing:.08em;color:var(--sd-white);
  background:linear-gradient(to top,rgba(7,28,51,.92),rgba(7,28,51,0));
}
.sd-media__ph{
  position:absolute;inset:0;display:grid;place-items:center;
  font-family:var(--sd-font-data);font-size:12px;letter-spacing:.18em;color:var(--sd-mist);
  background:
    linear-gradient(135deg,rgba(33,212,224,.10) 0 25%,transparent 25% 50%,rgba(255,107,26,.10) 50% 75%,transparent 75%) 0 0/28px 28px,
    var(--sd-panel);
}

/* ---------- 15. 标签页 ---------- */
.sd-tabs{display:block}
.sd-tabs__list{display:flex;flex-wrap:wrap;gap:2px;border-bottom:1px solid var(--sd-grid)}
.sd-tabs__tab{
  padding:11px 18px;font-size:13px;font-weight:500;letter-spacing:.1em;
  color:var(--sd-mist);
  border-bottom:2px solid transparent;margin-bottom:-1px;
  transition:color .2s var(--sd-ease),border-color .2s var(--sd-ease);
}
.sd-tabs__tab:hover{color:var(--sd-white)}
.sd-tabs__tab[aria-selected="true"]{color:var(--sd-white);border-bottom-color:var(--sd-orange)}
.sd-tabs__panel{padding-top:22px}
.sd-tabs__panel[hidden]{display:none}

/* ---------- 16. 对比表 ---------- */
.sd-tablewrap{overflow-x:auto;border:1px solid var(--sd-grid);background:rgba(14,44,74,.55)}
.sd-table{width:100%;min-width:560px;font-size:14px}
.sd-table th,.sd-table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--sd-hair);vertical-align:top}
.sd-table thead th{
  position:sticky;top:0;z-index:2;
  background:var(--sd-panel);
  font-size:11px;font-weight:500;letter-spacing:.16em;color:var(--sd-mist);
  border-bottom:1px solid var(--sd-grid);
}
.sd-table tbody tr:hover{background:rgba(33,212,224,.07)}
.sd-table__num{font-family:var(--sd-font-data);font-variant-numeric:tabular-nums;color:var(--sd-cyan)}
.sd-section--paper .sd-tablewrap{background:#fff;border-color:rgba(11,27,43,.2)}
.sd-section--paper .sd-table th,.sd-section--paper .sd-table td{border-bottom-color:rgba(11,27,43,.16)}
.sd-section--paper .sd-table thead th{background:#E7EEF5;color:#41607B}

/* ---------- 17. 章节索引 ---------- */
.sd-index{position:sticky;top:104px;display:grid;gap:2px;font-size:13px}
.sd-index__link{
  display:flex;gap:10px;padding:8px 0 8px 12px;
  border-left:1px solid var(--sd-grid);
  color:var(--sd-mist);
  transition:color .2s var(--sd-ease),border-color .2s var(--sd-ease);
}
.sd-index__link:hover{color:var(--sd-white);border-left-color:var(--sd-cyan)}
.sd-index__link[aria-current="true"]{color:var(--sd-white);border-left-color:var(--sd-orange)}

/* ---------- 18. 动效 ---------- */
@keyframes sd-pulse{
  0%,100%{opacity:1;box-shadow:0 0 18px rgba(255,107,26,.55)}
  50%{opacity:.5;box-shadow:0 0 6px rgba(255,107,26,.22)}
}
@keyframes sd-drop{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s var(--sd-ease),transform .5s var(--sd-ease)}
[data-reveal].is-visible{opacity:1;transform:none}
[data-rule]{transform:scaleX(0);transform-origin:left center;transition:transform .48s var(--sd-ease)}
[data-rule].is-visible{transform:scaleX(1)}

/* ---------- 19. 响应式 ---------- */
@media (max-width:1080px){
  .sd-col-3,.sd-col-4,.sd-col-5{grid-column:span 6}
  .sd-col-7,.sd-col-8,.sd-col-9{grid-column:span 12}
  .sd-section__head{grid-template-columns:minmax(0,1fr);align-items:start}
  .sd-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:960px){
  .sd-header__frame{grid-template-columns:auto 1fr auto;min-height:60px;gap:10px}
  .sd-brand{grid-column:1}
  .sd-utility{grid-column:3}
  .sd-navtoggle{display:inline-flex}
  .sd-utility__cta{display:none}
  .sd-header[data-open]::after{content:"";position:fixed;inset:0;background:rgba(4,16,29,.74);z-index:1}
  .sd-nav{
    position:fixed;top:0;right:0;bottom:0;left:auto;
    width:min(86vw,360px);
    background:var(--sd-panel);
    border-left:1px solid var(--sd-grid);
    padding:78px 22px 36px;
    overflow-y:auto;
    transform:translateX(102%);
    transition:transform .3s var(--sd-ease);
    z-index:70;
    justify-self:end;
  }
  .sd-header[data-open] .sd-nav{transform:translateX(0)}
  .sd-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .sd-nav__link{padding:14px 4px;border-bottom:1px solid var(--sd-hair);justify-content:flex-start}
  .sd-nav__link::after{display:none}
  .sd-nav__link:hover,.sd-nav__link[aria-current="page"]{background:rgba(33,212,224,.06)}
  .sd-nav__label{font-size:15px;letter-spacing:.1em}
  .sd-nav__rule{
    display:block;margin:16px 0 8px;padding:0 4px;
    font-size:11px;font-weight:500;letter-spacing:.18em;color:var(--sd-mist);
  }
  .sd-index{position:static}
}
@media (max-width:680px){
  .sd-col-3,.sd-col-4,.sd-col-5,.sd-col-6,.sd-col-7,.sd-col-8,.sd-col-9,.sd-col-12{grid-column:span 12}
  .sd-footer__grid{grid-template-columns:1fr}
  .sd-footer__base{flex-direction:column;align-items:flex-start}
  .sd-tabs__tab{padding:10px 12px;font-size:12px}
}

/* ---------- 20. 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;
  }
  [data-reveal]{opacity:1;transform:none}
  [data-rule]{transform:scaleX(1)}
}