/* ============================================================
   亿万电竞官网 · 共享样式 /assets/site.css
   深夜基底 + 霓虹青蓝 / 电光紫 / 洋红 / 暖金 的展览画册体系
   ============================================================ */

:root{
  --yw-ink:#05070E;
  --yw-panel:#0B1120;
  --yw-card:#101A31;
  --yw-cyan:#1DE5FF;
  --yw-violet:#8A5CFF;
  --yw-magenta:#FF2E88;
  --yw-gold:#F5C04A;
  --yw-text:#E8F1FF;
  --yw-muted:#9BB0CE;
  --yw-line:#2A3A5C;
  --yw-shell:1240px;
  --yw-cut:16px;
  --yw-ease:cubic-bezier(.16,.84,.34,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
:focus-visible{outline:2px solid var(--yw-cyan);outline-offset:3px;border-radius:0;}

body{
  min-height:100vh;
  color:var(--yw-text);
  background-color:var(--yw-ink);
  background-image:
    radial-gradient(920px 540px at 6% -8%, rgba(29,229,255,.14), transparent 64%),
    radial-gradient(780px 440px at 98% 2%, rgba(138,92,255,.17), transparent 62%),
    radial-gradient(640px 420px at 52% 108%, rgba(255,46,136,.10), transparent 70%);
  background-attachment:fixed;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:1;
  background-image:repeating-linear-gradient(180deg, rgba(232,241,255,.035) 0 1px, transparent 1px 4px);
  opacity:.6;
}

body[data-nav-locked]{overflow:hidden;}

h1,h2,h3,h4{
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.01em;
}
h1{font-size:clamp(34px,5.2vw,68px);}
h2{font-size:clamp(26px,3.4vw,44px);}
h3{font-size:clamp(17px,1.6vw,20px);line-height:1.4;}
p{max-width:44em;}

.yw-mono{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
  letter-spacing:.08em;
  font-variant-numeric:tabular-nums;
}

/* ---------- 容器 ---------- */
.yw-shell{
  width:100%;
  max-width:var(--yw-shell);
  margin:0 auto;
  padding:0 24px;
}

.yw-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.yw-col-3{grid-column:span 3;}
.yw-col-4{grid-column:span 4;}
.yw-col-5{grid-column:span 5;}
.yw-col-6{grid-column:span 6;}
.yw-col-7{grid-column:span 7;}
.yw-col-8{grid-column:span 8;}
.yw-col-12{grid-column:span 12;}

.yw-prose{max-width:38em;color:var(--yw-muted);}
.yw-prose p+p{margin-top:1em;}
.yw-prose strong{color:var(--yw-text);}

/* ---------- 跳转链接 ---------- */
.yw-skip{
  position:absolute;
  left:16px;
  top:-64px;
  z-index:200;
  padding:10px 18px;
  background:var(--yw-gold);
  color:var(--yw-ink);
  font-size:14px;
  letter-spacing:.08em;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:top .3s var(--yw-ease);
}
.yw-skip:focus{top:16px;}

/* ---------- 页头 ---------- */
.yw-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(5,7,14,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--yw-line);
}

.yw-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:rgba(42,58,92,.55);
}
.yw-progress__bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--yw-cyan),var(--yw-violet) 58%,var(--yw-magenta));
  transition:width .12s linear;
}

.yw-header__upper{
  border-bottom:1px solid var(--yw-line);
  background:linear-gradient(90deg,rgba(29,229,255,.07),rgba(138,92,255,.07) 60%,transparent);
}
.yw-header__upper-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:40px;
  padding-top:7px;
  padding-bottom:7px;
}

.yw-brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:18px;
  font-weight:900;
  letter-spacing:.1em;
  color:var(--yw-text);
  white-space:nowrap;
}
.yw-brand::before{
  content:"";
  width:9px;
  height:9px;
  background:var(--yw-cyan);
  box-shadow:0 0 12px rgba(29,229,255,.8);
  clip-path:polygon(0 0,100% 0,100% 100%,0 60%);
}
.yw-brand:hover{color:var(--yw-cyan);}

.yw-brandline{
  display:flex;
  align-items:center;
  gap:14px;
  flex-wrap:wrap;
  max-width:none;
}
.yw-brandline__note{
  font-size:12px;
  letter-spacing:.2em;
  color:var(--yw-muted);
  max-width:none;
}

.yw-utility{
  display:flex;
  align-items:center;
  gap:0;
  flex-wrap:wrap;
}
.yw-utility a{
  padding:4px 12px;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--yw-muted);
  border-left:1px solid var(--yw-line);
  transition:color .3s var(--yw-ease);
}
.yw-utility a:first-child{border-left:0;}
.yw-utility a:hover,
.yw-utility a[aria-current="page"]{color:var(--yw-cyan);}

.yw-header__main-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:62px;
  padding-top:9px;
  padding-bottom:9px;
}

.yw-nav{flex:1 1 auto;}
.yw-nav__list{
  display:flex;
  align-items:stretch;
  flex-wrap:wrap;
}
.yw-nav__list li+li{border-left:1px solid var(--yw-line);}
.yw-nav__list a{
  display:block;
  padding:9px 16px;
  font-size:15px;
  letter-spacing:.06em;
  color:var(--yw-muted);
  border:1px solid transparent;
  transition:color .3s var(--yw-ease),border-color .3s var(--yw-ease),background .3s var(--yw-ease);
}
.yw-nav__list a:hover{
  color:var(--yw-text);
  border-color:var(--yw-line);
  background:rgba(29,229,255,.05);
}
.yw-nav__list a[aria-current="page"]{
  color:var(--yw-text);
  border-color:var(--yw-cyan);
  background:linear-gradient(180deg,rgba(29,229,255,.14),rgba(29,229,255,0));
  box-shadow:inset 0 -2px 0 var(--yw-cyan);
}

.yw-header__actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}

/* ---------- 按钮 ---------- */
.yw-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 20px;
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  white-space:nowrap;
  border:1px solid transparent;
  clip-path:polygon(9px 0,100% 0,100% calc(100% - 9px),calc(100% - 9px) 100%,0 100%,0 9px);
  transition:transform .3s var(--yw-ease),box-shadow .3s var(--yw-ease),background .3s var(--yw-ease),color .3s var(--yw-ease),border-color .3s var(--yw-ease);
}
.yw-btn--gold{
  background:var(--yw-gold);
  color:var(--yw-ink);
  border-color:var(--yw-gold);
}
.yw-btn--gold:hover{
  transform:translateY(-1px);
  box-shadow:0 10px 26px rgba(245,192,74,.28);
}
.yw-btn--ghost{
  background:rgba(29,229,255,.06);
  color:var(--yw-cyan);
  border-color:var(--yw-cyan);
}
.yw-btn--ghost:hover{
  background:rgba(29,229,255,.16);
  transform:translateY(-1px);
}
.yw-btn--cyan{
  background:linear-gradient(90deg,var(--yw-cyan),var(--yw-violet));
  color:var(--yw-ink);
  border-color:transparent;
}
.yw-btn--cyan:hover{box-shadow:0 12px 30px rgba(29,229,255,.26);}

/* ---------- 移动导航按钮 ---------- */
.yw-nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border:1px solid var(--yw-line);
  color:var(--yw-text);
  font-size:14px;
  letter-spacing:.14em;
}
.yw-nav-toggle__bars{display:flex;flex-direction:column;gap:4px;}
.yw-nav-toggle__bars i{
  display:block;
  width:18px;
  height:2px;
  background:var(--yw-cyan);
  transition:transform .3s var(--yw-ease),opacity .3s var(--yw-ease);
}
.yw-header[data-open] .yw-nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.yw-header[data-open] .yw-nav-toggle__bars i:nth-child(2){opacity:0;}
.yw-header[data-open] .yw-nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.yw-nav-toggle__label{white-space:nowrap;}

/* ---------- 通用形状与面板 ---------- */
.yw-cut{
  clip-path:polygon(var(--yw-cut) 0,100% 0,100% calc(100% - var(--yw-cut)),calc(100% - var(--yw-cut)) 100%,0 100%,0 var(--yw-cut));
}
.yw-panel{
  position:relative;
  background:linear-gradient(160deg,var(--yw-panel),#070C18 70%);
  border:1px solid var(--yw-line);
  padding:28px;
}
.yw-card{
  position:relative;
  display:block;
  background:linear-gradient(160deg,var(--yw-card),#0B1120);
  border:1px solid var(--yw-line);
  padding:24px;
  clip-path:polygon(14px 0,100% 0,100% calc(100% - 14px),calc(100% - 14px) 100%,0 100%,0 14px);
  transition:border-color .35s var(--yw-ease),transform .35s var(--yw-ease),background .35s var(--yw-ease);
}
.yw-card:hover{
  border-color:var(--yw-gold);
  transform:translateY(-3px);
  background:linear-gradient(160deg,#122040,#0B1120);
}
.yw-card__title{
  font-size:19px;
  font-weight:900;
  margin-bottom:8px;
  color:var(--yw-text);
}
.yw-card__text{
  font-size:15px;
  color:var(--yw-muted);
  margin-bottom:14px;
}
.yw-card__more{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--yw-cyan);
  transition:color .35s var(--yw-ease),transform .35s var(--yw-ease);
}
.yw-card__more::after{content:"→";transition:transform .35s var(--yw-ease);}
.yw-card:hover .yw-card__more{color:var(--yw-gold);}
.yw-card:hover .yw-card__more::after{transform:translateX(5px);}

.yw-tag{
  display:inline-flex;
  align-items:center;
  padding:3px 10px;
  font-size:12px;
  letter-spacing:.14em;
  border:1px solid currentColor;
  color:var(--yw-cyan);
  white-space:nowrap;
}
.yw-tag--violet{color:var(--yw-violet);}
.yw-tag--magenta{color:var(--yw-magenta);}
.yw-tag--gold{color:var(--yw-gold);}

.yw-annotation{
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-size:12px;
  letter-spacing:.36em;
  color:var(--yw-violet);
  transition:color .4s var(--yw-ease);
}
.yw-chapter[data-active="true"] .yw-annotation{color:var(--yw-gold);}

.yw-eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.3em;
  color:var(--yw-cyan);
  text-transform:uppercase;
  margin-bottom:12px;
}

.yw-section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  flex-wrap:wrap;
  padding-bottom:18px;
  margin-bottom:36px;
  border-bottom:1px solid var(--yw-line);
}
.yw-section-head p{color:var(--yw-muted);font-size:15px;max-width:34em;}

.yw-rule{
  height:1px;
  background:linear-gradient(90deg,var(--yw-line),rgba(42,58,92,0));
  margin:36px 0;
}
.yw-rule--tick{
  height:14px;
  border-bottom:1px solid var(--yw-line);
  background-image:repeating-linear-gradient(90deg,var(--yw-line) 0 1px,transparent 1px 16px);
  background-repeat:no-repeat;
  background-position:left bottom;
  background-size:100% 7px;
}

/* ---------- 章节 / 显现 / 筛选 ---------- */
.yw-chapter{position:relative;}
.yw-chapter::before{
  content:"";
  position:absolute;
  left:-18px;
  top:6px;
  width:2px;
  height:0;
  background:linear-gradient(180deg,var(--yw-cyan),var(--yw-gold));
  transition:height .5s var(--yw-ease);
}
.yw-chapter[data-active="true"]::before{height:56px;}

.yw-reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s var(--yw-ease),transform .5s var(--yw-ease);
}
.yw-reveal[data-reveal="on"]{opacity:1;transform:none;}

.yw-filter{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.yw-filter__btn{
  padding:8px 16px;
  font-size:13px;
  letter-spacing:.12em;
  color:var(--yw-muted);
  border:1px solid var(--yw-line);
  clip-path:polygon(7px 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%,0 7px);
  transition:color .3s var(--yw-ease),border-color .3s var(--yw-ease),background .3s var(--yw-ease);
}
.yw-filter__btn:hover{color:var(--yw-text);border-color:var(--yw-cyan);}
.yw-filter__btn[aria-pressed="true"]{
  color:var(--yw-text);
  border-color:var(--yw-cyan);
  background:rgba(29,229,255,.12);
}
[data-filter-item][hidden]{display:none;}

/* ---------- 图片容器 ---------- */
.yw-media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background:linear-gradient(140deg,#0B1120,#101A31);
  border:1px solid var(--yw-line);
  clip-path:polygon(18px 0,100% 0,100% calc(100% - 18px),calc(100% - 18px) 100%,0 100%,0 18px);
}
.yw-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  opacity:.92;
}
.yw-media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(5,7,14,0) 45%,rgba(5,7,14,.72));
}
.yw-media--wide{aspect-ratio:21 / 9;}
.yw-media--tall{aspect-ratio:3 / 4;}
.yw-media__caption{
  position:absolute;
  left:16px;
  right:16px;
  bottom:14px;
  z-index:2;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--yw-muted);
}

/* ---------- 面包屑 ---------- */
.yw-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--yw-muted);
  margin-bottom:22px;
}
.yw-breadcrumb li{display:flex;align-items:center;gap:10px;max-width:none;}
.yw-breadcrumb li+li::before{content:"/";color:var(--yw-line);}
.yw-breadcrumb a:hover{color:var(--yw-cyan);}

/* ---------- 页脚 ---------- */
.yw-footer{
  position:relative;
  z-index:2;
  margin-top:96px;
  padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(5,7,14,.4),var(--yw-panel) 42%,#05070E);
  border-top:1px solid var(--yw-line);
}
.yw-footer__top{
  display:grid;
  grid-template-columns:1.1fr 3fr;
  gap:44px;
}
.yw-footer__brand{padding-top:4px;}
.yw-footer__note{
  margin-top:14px;
  font-size:13px;
  letter-spacing:.14em;
  color:var(--yw-muted);
  max-width:22em;
}
.yw-footer__cols{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:28px;
}
.yw-footer__col h3{
  font-size:12px;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--yw-cyan);
  margin-bottom:16px;
}
.yw-footer__list li+li{margin-top:9px;}
.yw-footer__list a{
  font-size:14px;
  color:var(--yw-muted);
  transition:color .3s var(--yw-ease),padding-left .3s var(--yw-ease);
}
.yw-footer__list a:hover{
  color:var(--yw-text);
  padding-left:5px;
}
.yw-footer__contact{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:22px;
}
.yw-contact-item{
  border-left:1px solid var(--yw-line);
  padding-left:16px;
}
.yw-contact-item__label{
  font-size:12px;
  letter-spacing:.22em;
  color:var(--yw-violet);
  margin-bottom:8px;
  max-width:none;
}
.yw-contact-item__value{
  font-size:14px;
  color:var(--yw-text);
  line-height:1.7;
  word-break:break-all;
  max-width:none;
}
.yw-copy{
  margin-top:10px;
  padding:3px 10px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--yw-muted);
  border:1px solid var(--yw-line);
  transition:color .3s var(--yw-ease),border-color .3s var(--yw-ease);
}
.yw-copy:hover{color:var(--yw-cyan);border-color:var(--yw-cyan);}
.yw-copy[data-copied]{color:var(--yw-gold);border-color:var(--yw-gold);}
.yw-footer__legal{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:12px;
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--yw-line);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--yw-muted);
}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .yw-nav__list a{padding:9px 11px;font-size:14px;}
  .yw-header__actions .yw-btn{padding:9px 15px;font-size:13px;}
  .yw-col-5,.yw-col-7{grid-column:span 12;}
}

@media (max-width:1024px){
  .yw-col-3,.yw-col-4{grid-column:span 6;}
  .yw-footer__top{grid-template-columns:1fr;gap:32px;}
  .yw-footer__contact{grid-template-columns:repeat(2,minmax(0,1fr));}
}

/* ---------- 手机：两段式抽屉 ---------- */
@media (max-width:900px){
  .yw-nav-toggle{display:inline-flex;}
  .yw-brandline__note{display:none;}
  .yw-header__main-inner{
    justify-content:space-between;
    gap:12px;
    min-height:56px;
  }
  .yw-nav,
  .yw-header__actions{display:none;}

  .yw-header[data-open]{
    position:fixed;
    inset:0;
    display:flex;
    flex-direction:column;
    background:var(--yw-ink);
    overflow:hidden;
  }
  .yw-header[data-open] .yw-header__main{
    flex:1 1 auto;
    min-height:0;
    display:flex;
  }
  .yw-header[data-open] .yw-header__main-inner{
    flex:1 1 auto;
    min-height:0;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    padding:0 20px;
  }
  .yw-header[data-open] .yw-nav-toggle{align-self:flex-end;margin:14px 0 4px;}
  .yw-header[data-open] .yw-nav{
    display:block;
    flex:1 1 auto;
    min-height:0;
    overflow-y:auto;
    padding:8px 0 20px;
  }
  .yw-header[data-open] .yw-nav__list{flex-direction:column;}
  .yw-header[data-open] .yw-nav__list li+li{
    border-left:0;
    border-top:1px solid var(--yw-line);
  }
  .yw-header[data-open] .yw-nav__list a{
    padding:16px 4px;
    font-size:17px;
  }
  .yw-header[data-open] .yw-header__actions{
    display:flex;
    flex-direction:column;
    gap:10px;
    margin:0;
    padding:16px 0 22px;
    border-top:1px solid var(--yw-line);
  }
  .yw-header[data-open] .yw-header__actions .yw-btn{
    width:100%;
    padding:14px 18px;
    font-size:15px;
  }
  .yw-footer{margin-top:72px;padding-top:48px;}
}

/* ---------- 小屏 ---------- */
@media (max-width:640px){
  body{font-size:16px;}
  .yw-shell{padding:0 18px;}
  .yw-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:16px;}
  .yw-col-3,.yw-col-4,.yw-col-5,.yw-col-6,.yw-col-7,.yw-col-8,.yw-col-12{grid-column:span 6;}
  .yw-utility a{padding:4px 9px;font-size:11px;letter-spacing:.14em;}
  .yw-footer__cols{grid-template-columns:1fr 1fr;}
  .yw-footer__contact{grid-template-columns:1fr;}
  .yw-contact-item{border-left:0;border-top:1px solid var(--yw-line);padding-left:0;padding-top:14px;}
  .yw-panel{padding:20px;}
  .yw-annotation{letter-spacing:.22em;}
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .yw-reveal{opacity:1;transform:none;}
  .yw-card:hover{transform:none;}
  .yw-btn:hover{transform:none;}
}