/* ============================================================
   雷火电竞主站 · 共享样式 /assets/site.css
   头部 + 页脚 + 通用组件 + 排版基础
   ============================================================ */

:root{
  --violet:#7A3CFF;
  --violet-deep:#3E1C86;
  --cyan:#22D3FF;
  --cyan-deep:#0B6E8F;
  --lava:#FF6A2B;
  --ink:#08070F;
  --panel:#131324;
  --white:#EEF2FF;
  --mist:#9AA3C7;
  --mint:#4BE3C0;
  --line:rgba(238,242,255,.10);
  --line-strong:rgba(238,242,255,.22);

  --rail-w:88px;
  --topline-h:72px;
  --cut:14px;

  --ease:cubic-bezier(.2,.7,.3,1);
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"Cascadia Mono",Menlo,Consolas,monospace;
  --serif:"Noto Serif SC","Songti SC","STSong",Georgia,"Times New Roman",serif;
  --sans:"Inter","Noto Sans SC",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--ink);
  scrollbar-width:thin;
  scrollbar-color:var(--violet-deep) #0c0b16;
}

body{
  margin:0;
  min-height:100vh;
  background:var(--ink);
  color:var(--white);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  padding-left:var(--rail-w);
  padding-top:var(--topline-h);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4,h5{
  margin:0 0 .5em;
  font-family:var(--serif);
  font-weight:900;
  line-height:1.1;
  letter-spacing:-.02em;
  color:var(--white);
}
h1{ font-size:clamp(2.6rem,6vw,6rem) }
h2{ font-size:clamp(1.7rem,3vw,2.4rem) }
h3{ font-size:clamp(1.15rem,1.7vw,1.5rem) }

p{ margin:0 0 1em }
a{ color:inherit; text-decoration:none }
ul,ol{ margin:0; padding:0; list-style:none }
button{ font:inherit; color:inherit; background:none; border:0; cursor:pointer }
img,svg,video{ max-width:100%; display:block }

[hidden]{ display:none !important }

::selection{ background:var(--violet); color:var(--white) }

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

/* ---------- 图标级工具类 ---------- */
.container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:clamp(16px,3.4vw,44px);
}
.container--narrow{ max-width:900px }

.prose{ max-width:68ch; color:var(--mist) }
.prose p{ margin:0 0 1.1em }
.prose strong{ color:var(--white) }
.prose a{ color:var(--cyan); text-decoration:underline; text-underline-offset:3px }
.prose a:hover{ color:var(--white) }

.num,.mono{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.label{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--cyan);
}

/* ---------- 布局网格 ---------- */
.grid{ display:grid; gap:clamp(16px,2.2vw,28px) }
.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)) }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)) }
.grid--split{ grid-template-columns:minmax(230px,.66fr) minmax(0,1.34fr) }

/* ---------- 切角面板 ---------- */
.panel{
  position:relative;
  background:var(--line);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.panel::before{
  content:"";
  position:absolute;
  inset:1px;
  z-index:0;
  background:var(--panel);
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.panel > *{ position:relative; z-index:1 }
.panel:hover{ background:var(--cyan); transform:translateY(-2px) }
.panel--violet:hover{ background:var(--violet) }
.panel--flat::before{ background:#0e0e1c }

/* ---------- 斜向分隔带 ---------- */
.slash{
  height:2px;
  margin:clamp(28px,4vw,52px) 0;
  background:linear-gradient(90deg,transparent,var(--violet) 18%,var(--cyan) 54%,transparent);
  transform:rotate(-.6deg);
  transition:transform .28s var(--ease);
}
.slash:hover{ transform:rotate(-.6deg) translateX(8px) }

/* ---------- 编号章节头 ---------- */
.section-mark{
  display:flex;
  align-items:baseline;
  gap:clamp(10px,1.6vw,20px);
  margin-bottom:clamp(14px,2vw,22px);
}
.section-mark__num{
  font-family:var(--mono);
  font-size:clamp(28px,4vw,56px);
  font-weight:700;
  line-height:1;
  color:var(--violet);
  font-variant-numeric:tabular-nums;
}
.section-mark__title{
  margin:0;
  font-size:clamp(20px,2.4vw,30px);
  letter-spacing:-.01em;
}

/* ---------- 状态标记 ---------- */
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--mist);
  border:1px solid var(--line-strong);
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.badge--live{ color:var(--mint); border-color:rgba(75,227,192,.45) }
.badge--hot{ color:var(--lava); border-color:rgba(255,106,43,.45) }

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  white-space:nowrap;
  border:1px solid transparent;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .18s var(--ease);
}
.btn--solid{ background:var(--violet); color:var(--white) }
.btn--solid:hover{ background:#8d5bff; transform:translateY(-2px) }
.btn--ghost{ background:transparent; color:var(--white); border-color:var(--line-strong) }
.btn--ghost:hover{ color:var(--cyan); border-color:var(--cyan); transform:translateY(-2px) }

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 18px;
  font-size:13px;
  color:var(--mist);
}
.breadcrumbs li{ display:flex; align-items:center; gap:8px }
.breadcrumbs li + li::before{ content:"/"; color:var(--violet) }
.breadcrumbs a{ color:var(--mist) }
.breadcrumbs a:hover{ color:var(--cyan); text-decoration:underline; text-underline-offset:3px }

/* ---------- 图片容器（页面阶段放图用） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:linear-gradient(150deg,#191a35,#0d0d1b 58%,#141026);
  border:1px solid var(--line);
  aspect-ratio:16 / 9;
  clip-path:polygon(var(--cut) 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%,0 var(--cut));
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.05) contrast(1.04);
}
.media-frame--tall{ aspect-ratio:3 / 4 }
.media-frame--square{ aspect-ratio:1 / 1 }
.media-frame__glow{
  position:absolute;
  inset:0;
  pointer-events:none;
  background:
    radial-gradient(120% 80% at 10% 0%,rgba(122,60,255,.34),transparent 60%),
    radial-gradient(80% 70% at 100% 100%,rgba(34,211,255,.22),transparent 62%);
}

/* ---------- 进入视口显现 ---------- */
[data-reveal].is-pending{
  opacity:0;
  transform:translateY(14px);
  transition:none;
}
[data-reveal].is-revealed{
  opacity:1;
  transform:none;
  transition:opacity .55s var(--ease),transform .55s var(--ease);
}

/* ============================================================
   头部
   ============================================================ */
.site-header{ position:relative; z-index:80 }

/* 跳转链接 */
.skip-link{
  position:fixed;
  top:8px;
  left:calc(var(--rail-w) + 8px);
  z-index:200;
  padding:10px 18px;
  font-size:14px;
  font-weight:700;
  color:#06121a;
  background:var(--cyan);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.skip-link:focus{ transform:none }

/* 顶部控制条 */
.topline{
  position:fixed;
  top:0;
  right:0;
  left:var(--rail-w);
  z-index:70;
  height:var(--topline-h);
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 clamp(14px,3vw,34px);
  background:rgba(8,7,15,.84);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.topline::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 42%,transparent 82%);
  opacity:.85;
}
.topline__tools{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}

/* 品牌 */
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--white);
}
.brand__mark{
  position:relative;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  background:linear-gradient(140deg,var(--violet),var(--violet-deep) 58%,#1a0f3d);
  clip-path:polygon(50% 0,100% 26%,100% 74%,50% 100%,0 74%,0 26%);
}
.brand__spark{
  width:13px;
  height:20px;
  background:var(--cyan);
  clip-path:polygon(62% 0,100% 0,46% 44%,82% 44%,34% 100%,44% 56%,6% 56%);
  filter:drop-shadow(0 0 8px rgba(34,211,255,.85));
}
.brand__text{ display:flex; flex-direction:column; line-height:1.16 }
.brand__name{
  font-family:var(--serif);
  font-size:17px;
  font-weight:900;
  letter-spacing:.06em;
}
.brand__line{
  font-size:11px;
  letter-spacing:.12em;
  color:var(--mist);
}

/* 赛区胶囊 */
.district-switch{
  display:flex;
  align-items:center;
  gap:10px;
  padding:5px 6px 5px 14px;
  background:rgba(19,19,36,.85);
  border:1px solid var(--line);
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
}
.district-switch__label{
  font-size:11px;
  letter-spacing:.16em;
  color:var(--mist);
}
.district-switch__pills{ display:flex; gap:4px }
.district-pill{
  padding:6px 14px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--mist);
  transition:background .2s var(--ease),color .2s var(--ease);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.district-pill:hover{ color:var(--white); background:rgba(34,211,255,.14) }
.district-pill[aria-pressed="true"],
.district-pill.is-active{
  background:var(--cyan);
  color:#06121a;
  font-weight:700;
}

.quick-actions{ display:flex; align-items:center; gap:8px }

/* 移动抽屉按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:9px 12px;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--white);
  border:1px solid var(--line-strong);
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:12px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:var(--cyan);
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{ top:0 }
.nav-toggle__bars::after{ bottom:0 }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{ transform:translateY(5px) rotate(45deg) }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{ transform:translateY(-5px) rotate(-45deg) }

/* 侧边轨道 */
.rail{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  z-index:90;
  width:var(--rail-w);
  display:flex;
  flex-direction:column;
  padding:14px 0 18px;
  background:linear-gradient(180deg,#0e0b1d 0%,#08070F 55%,#0b0918 100%);
  border-right:1px solid var(--line);
}
.rail__list{
  flex:1 1 auto;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:2px;
  overflow-y:auto;
  scrollbar-width:none;
}
.rail__list::-webkit-scrollbar{ display:none }
.rail__link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:6px;
  padding:10px 4px;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
  transition:color .18s var(--ease),background .18s var(--ease);
}
.rail__link::before{
  content:"";
  position:absolute;
  left:0;
  top:6px;
  bottom:6px;
  width:3px;
  background:transparent;
  transition:background .2s var(--ease),box-shadow .2s var(--ease);
}
.rail__link:hover{ color:var(--white); background:rgba(122,60,255,.16) }
.rail__link[aria-current="page"]{
  color:var(--white);
  background:rgba(122,60,255,.22);
}
.rail__link[aria-current="page"]::before{
  background:var(--violet);
  box-shadow:0 0 14px rgba(122,60,255,.9);
}
.rail__num{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--cyan);
  font-variant-numeric:tabular-nums;
}
.rail__link[aria-current="page"] .rail__num{ color:var(--white) }
.rail__label{
  font-size:12px;
  line-height:1.25;
  text-align:center;
}
.rail__phase{
  flex:0 0 auto;
  padding:14px 8px 0;
  border-top:1px solid var(--line);
  text-align:center;
}
.rail__phase-title{
  display:block;
  margin-bottom:8px;
  font-size:10px;
  letter-spacing:.14em;
  color:var(--mist);
}
.rail__phases{
  display:flex;
  flex-direction:column;
  gap:5px;
  font-size:11px;
  color:var(--mist);
}
.rail__phases li{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:5px;
}
.rail__dot{
  width:6px;
  height:6px;
  background:var(--cyan-deep);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
}
.rail__phases .is-current{ color:var(--white) }
.rail__phases .is-current .rail__dot{
  background:var(--lava);
  box-shadow:0 0 10px rgba(255,106,43,.9);
}

/* 遮罩 */
.rail-scrim{
  position:fixed;
  inset:0;
  z-index:88;
  background:rgba(4,3,10,.72);
  opacity:0;
  visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);
}
.rail-scrim.is-visible{ opacity:1; visibility:visible }

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,110px);
  padding:clamp(40px,5vw,74px) 0 28px;
  background:linear-gradient(180deg,#0b0a16,#08070F 72%);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 46%,var(--lava));
  transform:skewY(-.5deg);
  transform-origin:left center;
}
.site-footer::after{
  content:"";
  position:absolute;
  left:-6%;
  bottom:-40%;
  width:52%;
  height:150%;
  pointer-events:none;
  background:radial-gradient(closest-side,rgba(122,60,255,.16),transparent 72%);
}

.footer__top{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px 30px;
  padding-bottom:clamp(22px,3vw,38px);
  margin-bottom:clamp(24px,3.4vw,44px);
  border-bottom:1px solid var(--line);
}
.brand--footer .brand__mark{ width:42px; height:42px }
.brand--footer .brand__name{ font-size:20px }
.footer__tagline{
  margin:0;
  font-size:14px;
  letter-spacing:.08em;
  color:var(--mist);
}

.footer__grid{
  display:grid;
  grid-template-columns:1fr 1fr 1.35fr;
  gap:clamp(24px,4vw,56px);
}
.footer__col{ position:relative; z-index:1 }
.footer__title{
  margin:0 0 16px;
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--cyan);
}
.footer__title::after{
  content:"";
  display:block;
  width:34px;
  height:2px;
  margin-top:10px;
  background:linear-gradient(90deg,var(--violet),transparent);
}
.footer__links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer__links a{
  display:inline-block;
  font-size:15px;
  color:var(--mist);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer__links a:hover{
  color:var(--white);
  transform:translateX(4px);
}
.footer__contact{
  display:flex;
  flex-direction:column;
  gap:6px;
  font-size:15px;
  line-height:1.8;
  color:var(--mist);
}
.footer__contact p{ margin:0 }
.footer__note{
  margin-top:6px;
  font-size:13px;
  color:var(--mist);
  border-left:2px solid var(--violet);
  padding-left:10px;
}
.footer__hours{
  font-size:13px;
  color:var(--mint);
}
.footer__legal{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:10px 26px;
  margin-top:clamp(30px,4vw,54px);
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--mist);
}
.footer__legal p{ margin:0 }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .quick-actions .btn--ghost{ display:none }
}

@media (max-width:900px){
  :root{
    --rail-w:0px;
    --topline-h:100px;
  }

  .topline{
    left:0;
    flex-wrap:wrap;
    align-content:center;
    gap:8px 12px;
    padding:10px 14px;
  }
  .topline__tools{
    flex-basis:100%;
    margin-left:0;
    gap:10px;
    overflow-x:auto;
    padding-bottom:2px;
    scrollbar-width:none;
  }
  .topline__tools::-webkit-scrollbar{ display:none }
  .district-switch,
  .quick-actions{ flex:0 0 auto }
  .brand__mark{ width:32px; height:32px }
  .brand__name{ font-size:15px }
  .brand__line{ font-size:10px }

  .nav-toggle{ display:inline-flex; margin-left:auto }

  .rail{
    width:min(320px,82vw);
    transform:translateX(-104%);
    transition:transform .3s var(--ease);
    padding:calc(var(--topline-h) + 12px) 0 24px;
    background:linear-gradient(180deg,#100d20,#08070F);
    overflow-y:auto;
    box-shadow:28px 0 70px rgba(0,0,0,.65);
    z-index:96;
  }
  .rail[data-open]{ transform:none }
  .rail__list{
    flex:0 0 auto;
    justify-content:flex-start;
    gap:0;
    overflow:visible;
  }
  .rail__link{
    flex-direction:row;
    justify-content:flex-start;
    gap:16px;
    padding:15px 22px;
    font-size:15px;
  }
  .rail__link::before{ top:0; bottom:0; height:auto }
  .rail__num{ font-size:12px }
  .rail__label{ font-size:15px; text-align:left }
  .rail__phase{ padding:18px 22px 0; text-align:left }
  .rail__phases{
    flex-direction:row;
    flex-wrap:wrap;
    gap:10px 16px;
  }
  .rail__phases li{ justify-content:flex-start }

  body.is-nav-open{ overflow:hidden }

  .skip-link{ left:8px }

  .grid--2,
  .grid--3,
  .grid--split{ grid-template-columns:1fr }

  .footer__grid{ grid-template-columns:1fr 1fr }
}

@media (max-width:620px){
  body{ font-size:15px }
  .footer__grid{ grid-template-columns:1fr }
  .footer__top{ gap:12px }
  .footer__legal{ flex-direction:column; gap:6px }
  .section-mark{ flex-wrap:wrap }
}

@media (min-width:901px){
  .rail-scrim{ display:none }
}

/* ---------- 动效克制 ---------- */
@media (prefers-reduced-motion:reduce){
  html{ scroll-behavior:auto }
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .panel:hover{ transform:none }
  .btn:hover{ transform:none }
  .slash:hover{ transform:rotate(-.6deg) }
}