/* =============================================================
   火马电竞 · 共享样式表  /assets/site.css
   0 变量 / 1 重置 / 2 排版 / 3 布局与装饰 / 4 头部
   5 移动导航 / 6 页脚 / 7 按钮·标签·卡片 / 8 索引与表格
   9 图片容器 / 10 目录与折叠 / 11 动效 / 12 响应式与可用性
   ============================================================= */

/* ---------- 0. 变量 ---------- */
:root{
  --ink:#0B0B0D;
  --ink-2:#17181C;
  --line:#2A2C31;
  --paper:#F4F1EC;
  --muted:#9A9CA3;
  --orange:#FF5A1F;
  --orange-soft:#FF743F;
  --red:#D81E28;
  --cyan:#2FD4E0;
  --green:#4BE38A;
  --amber:#FFC24B;

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

  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:28px;
  --radius-pill:999px;

  --gutter:clamp(20px,5vw,96px);
  --maxw:1320px;
  --header-h:76px;
  --ease:cubic-bezier(.2,.7,.2,1);
}

/* ---------- 1. 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:104px}
body{
  margin:0;min-height:100vh;
  font-family:var(--font-sans);font-size:17px;line-height:1.8;color:var(--paper);
  background:
    radial-gradient(1100px 620px at 88% -12%, rgba(255,90,31,.10), transparent 62%),
    radial-gradient(900px 520px at 4% 104%, rgba(47,212,224,.07), transparent 60%),
    var(--ink);
  background-repeat:no-repeat;
}
img,svg{max-width:100%;display:block}
a{color:var(--paper)}
button{font:inherit}
::selection{background:var(--orange);color:var(--ink)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
#main-content{display:block;scroll-margin-top:96px}

/* ---------- 2. 排版 ---------- */
h1,h2,h3,h4{margin:0 0 .6em;font-weight:900;line-height:1.2;letter-spacing:-.02em}
h1{font-size:clamp(38px,6vw,84px);letter-spacing:-.03em}
h2{font-size:clamp(26px,3.4vw,46px)}
h3{font-size:clamp(20px,2.2vw,28px)}
h4{font-size:17px;letter-spacing:0}
p{margin:0 0 1em}
ul,ol{margin:0 0 1em;padding-left:1.2em}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--orange);text-transform:uppercase}
.kicker::before{content:"";width:26px;height:2px;background:currentColor}
.section-title{margin:0 0 12px;font-size:clamp(26px,3.6vw,48px)}
.lead{margin:0 0 1em;font-size:clamp(16px,1.2vw,19px);max-width:68ch;color:rgba(244,241,236,.88)}
.note{margin:0 0 1em;font-size:13px;color:var(--muted)}
.mono{font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- 3. 布局与装饰 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(36px,6vw,88px);position:relative}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.grid--4-8{grid-template-columns:minmax(0,4fr) minmax(0,8fr)}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}

.track-line{position:relative;height:1px;background:var(--line);margin-block:clamp(24px,4vw,52px);border:0}
.track-line--accent::after{content:"";position:absolute;left:0;top:-1px;width:clamp(72px,14vw,180px);height:3px;background:linear-gradient(90deg,var(--orange),var(--red))}
.slant-band{background:linear-gradient(118deg, rgba(255,90,31,.14), rgba(216,30,40,.08) 42%, transparent 68%)}

.page-opening{display:grid;grid-template-columns:auto minmax(0,1fr);gap:clamp(14px,2.5vw,32px);align-items:start;padding-block:clamp(28px,5vw,64px) clamp(16px,2.5vw,28px);border-bottom:1px solid var(--line)}
.page-opening__index{font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;color:var(--orange);padding-top:14px}
.page-opening__title{margin:0 0 10px;font-size:clamp(30px,4.6vw,62px);letter-spacing:-.03em}
.page-opening__lead{margin:0;max-width:68ch;font-size:clamp(15px,1.2vw,18px);color:var(--muted)}

.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted)}
.breadcrumbs a{color:var(--muted);text-decoration:none}
.breadcrumbs a:hover{color:var(--orange)}
.breadcrumbs__sep{color:var(--muted);opacity:.55}
.breadcrumbs__current{color:var(--paper)}

/* ---------- 4. 头部 ---------- */
.skip-link{position:absolute;left:var(--gutter);top:-64px;z-index:200;padding:10px 20px;border-radius:var(--radius-pill);background:var(--paper);color:var(--ink);font-weight:700;text-decoration:none;transition:top .25s var(--ease)}
.skip-link:focus{top:12px}

.site-header{position:sticky;top:0;z-index:60}
.site-header::before{content:"";position:absolute;inset:0;background:rgba(11,11,13,.82);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .3s var(--ease),border-color .3s var(--ease);pointer-events:none;z-index:-1}
.site-header[data-scrolled]::before{background:rgba(11,11,13,.92);border-bottom-color:var(--line)}

.header-rail{position:relative;display:flex;align-items:center;gap:clamp(12px,2vw,28px);width:100%;max-width:var(--maxw);margin-inline:auto;padding:12px var(--gutter)}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--paper);flex:0 0 auto}
.brand__mark{display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;background:linear-gradient(135deg,var(--orange),var(--red));color:var(--ink);font-size:22px;font-weight:900;line-height:1;clip-path:polygon(14% 0,100% 0,86% 100%,0 100%)}
.brand__text{display:grid;gap:0}
.brand__name{font-size:19px;font-weight:900;letter-spacing:-.02em;line-height:1.25}
.brand__note{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--muted);line-height:1.5}
.brand--stack{align-items:flex-start}

.nav-capsule{display:flex;align-items:center;gap:6px;margin-left:auto;padding:8px;border:1px solid var(--line);border-radius:var(--radius-pill);background:rgba(23,24,28,.86);transition:transform .3s var(--ease),background .3s var(--ease),padding .3s var(--ease)}
.nav-capsule__index{flex:0 0 auto;padding:0 12px;border-right:1px solid var(--line);font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--orange)}
.nav-list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.nav-list__item{display:flex}
.nav-link{display:inline-flex;align-items:baseline;gap:6px;padding:9px 14px;border-radius:var(--radius-pill);color:var(--muted);text-decoration:none;font-size:15px;font-weight:700;white-space:nowrap;transition:color .25s var(--ease),background .25s var(--ease)}
.nav-link::before{content:attr(data-index);font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;opacity:.65}
.nav-link:hover{color:var(--paper);background:rgba(244,241,236,.07)}
.nav-link[aria-current="page"]{color:var(--ink);background:var(--orange)}
.nav-link[aria-current="page"]::before{opacity:.85;color:var(--ink)}
.nav-capsule__actions{display:flex;align-items:center;gap:6px;padding-left:8px;border-left:1px solid var(--line)}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;overflow:hidden}
.scroll-progress__bar{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--orange),var(--red));transition:transform .2s linear}

@media (min-width:1081px){
  .site-header[data-scrolled] .nav-capsule{padding:5px;background:rgba(23,24,28,.72);transform:scale(.94)}
  .site-header[data-scrolled] .brand__mark{width:38px;height:38px;font-size:19px}
}

/* ---------- 5. 移动导航 ---------- */
.nav-toggle{display:none;align-items:center;gap:10px;margin-left:auto;padding:10px 18px;border:1px solid var(--line);border-radius:var(--radius-pill);background:rgba(23,24,28,.9);color:var(--paper);font-size:13px;font-weight:700;cursor:pointer}
.nav-toggle__bar{position:relative;display:block;width:18px;height:2px;border-radius:2px;background:var(--orange)}
.nav-toggle__bar::before,.nav-toggle__bar::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--orange);transition:transform .25s var(--ease),top .25s var(--ease)}
.nav-toggle__bar::before{top:-6px}
.nav-toggle__bar::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after{top:0;transform:rotate(-45deg)}

@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .nav-capsule{
    position:fixed;left:12px;right:12px;bottom:14px;top:auto;z-index:90;
    flex-direction:column;align-items:stretch;gap:10px;padding:16px;
    border-radius:26px;background:rgba(17,18,21,.97);box-shadow:0 24px 60px rgba(0,0,0,.62);
    transform:translateY(140%);opacity:0;visibility:hidden;pointer-events:none;
    transition:transform .38s var(--ease),opacity .3s var(--ease),visibility .38s var(--ease);
  }
  .nav-capsule[data-open]{transform:none;opacity:1;visibility:visible;pointer-events:auto}
  .nav-capsule__index{border-right:0;border-bottom:1px solid var(--line);padding:0 4px 10px}
  .nav-list{flex-wrap:wrap;gap:6px}
  .nav-list__item{flex:1 1 46%}
  .nav-link{flex:1 1 auto;justify-content:center;background:rgba(244,241,236,.05);padding:10px 12px}
  .nav-capsule__actions{border-left:0;border-top:1px solid var(--line);padding:10px 0 0;justify-content:space-between}
  .nav-capsule__actions .btn{flex:1 1 auto;justify-content:center}
}

/* ---------- 6. 页脚 ---------- */
.site-footer{position:relative;margin-top:clamp(48px,8vw,120px);background:var(--ink-2);border-top:1px solid var(--line);overflow:hidden}
.footer-beacon{position:absolute;top:0;left:0;width:min(620px,66vw);height:3px;background:linear-gradient(90deg,var(--orange),var(--red),transparent)}
.footer-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(24px,4vw,64px);padding-top:clamp(36px,6vw,80px);padding-bottom:clamp(24px,4vw,48px)}
.footer-brand{display:grid;gap:14px;align-content:start}
.footer-claim{margin:0;font-size:clamp(18px,1.6vw,22px);font-weight:900;letter-spacing:-.01em}
.footer-note{margin:0;font-size:14px;color:var(--muted);max-width:44ch}

.footer-contact{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:8px}
.footer-contact__row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-family:var(--font-mono);font-size:13px;letter-spacing:.04em}
.footer-contact__key{color:var(--muted);min-width:72px}
.footer-contact__val{color:var(--paper);word-break:break-all}
.copy-btn{padding:3px 12px;border:1px solid var(--line);border-radius:var(--radius-pill);background:transparent;color:var(--muted);font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;cursor:pointer;transition:color .25s var(--ease),border-color .25s var(--ease)}
.copy-btn:hover{color:var(--orange);border-color:var(--orange)}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,3vw,32px)}
.footer-col__title{display:flex;align-items:center;gap:8px;margin:0 0 14px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--muted);text-transform:uppercase}
.footer-col__num{color:var(--orange)}
.footer-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-link{display:inline-flex;align-items:center;gap:8px;color:var(--paper);text-decoration:none;font-size:15px;font-weight:600}
.footer-link::before{content:"→";font-family:var(--font-mono);color:var(--muted);transition:transform .25s var(--ease),color .25s var(--ease)}
.footer-link:hover{color:var(--orange)}
.footer-link:hover::before{color:var(--orange);transform:translateX(3px)}

.footer-meta{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 24px;padding-top:20px;padding-bottom:clamp(24px,4vw,40px);border-top:1px solid var(--line);font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted)}
.footer-meta__item{display:inline-block}
.footer-meta__item--icp{color:var(--paper)}

/* ---------- 7. 按钮·标签·卡片 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border:1px solid transparent;border-radius:var(--radius-pill);font-size:14px;font-weight:700;text-decoration:none;cursor:pointer;transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease)}
.btn--primary{background:var(--orange);color:var(--ink)}
.btn--primary:hover{background:var(--orange-soft);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--orange);color:var(--orange)}
.btn--sm{padding:8px 16px;font-size:13px}

.chip{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border:1px solid var(--line);border-radius:var(--radius-pill);background:rgba(244,241,236,.03);font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.chip--accent{color:var(--orange);border-color:rgba(255,90,31,.5)}
.chip--ok{color:var(--green);border-color:rgba(75,227,138,.4)}
.chip--warn{color:var(--amber);border-color:rgba(255,194,75,.42)}

.card{position:relative;overflow:hidden;padding:clamp(18px,2.4vw,30px);border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--ink-2)}
.card--flat{background:transparent;border-style:dashed}
.card--accent::before{content:"";position:absolute;top:0;left:0;width:64px;height:4px;background:linear-gradient(90deg,var(--orange),var(--red))}
.card__title{margin:0 0 8px;font-size:19px;font-weight:900;letter-spacing:-.01em}
.card__meta{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted)}

.stat{display:grid;gap:4px}
.stat__value{font-family:var(--font-mono);font-size:clamp(24px,3vw,40px);font-weight:700;line-height:1.1;letter-spacing:.02em}
.stat__label{font-size:13px;color:var(--muted)}
.stat--up .stat__value{color:var(--green)}
.stat--down .stat__value{color:var(--red)}
.stat--accent .stat__value{color:var(--orange)}

/* ---------- 8. 索引与表格 ---------- */
.index-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.index-list__item{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:baseline;padding:15px 2px;border-bottom:1px solid var(--line)}
.index-list__num{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--orange)}
.index-list__label{font-size:17px;font-weight:700;color:var(--paper)}
.index-list__meta{font-family:var(--font-mono);font-size:12px;color:var(--muted);white-space:nowrap}
.index-link{color:inherit;text-decoration:none}
.index-link:hover{color:var(--orange)}

.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--ink-2)}
.data-table{width:100%;min-width:560px;border-collapse:collapse;font-size:15px}
.data-table caption{padding:14px 18px;text-align:left;font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted)}
.data-table th{padding:14px 18px;border-bottom:1px solid var(--line);font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);text-align:left;white-space:nowrap}
.data-table td{padding:14px 18px;border-bottom:1px solid rgba(42,44,49,.7);vertical-align:top}
.data-table tbody tr:nth-child(even){background:rgba(244,241,236,.03)}
.data-table tbody tr:last-child td{border-bottom:0}
.data-table .num{font-family:var(--font-mono);letter-spacing:.04em}
.data-table .up{color:var(--green)}
.data-table .down{color:var(--red)}

/* ---------- 9. 图片容器 ---------- */
.img-frame{position:relative;overflow:hidden;aspect-ratio:16/9;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(140deg,var(--ink-2),#101114)}
.img-frame::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 72% 18%, rgba(255,90,31,.20), transparent 58%),repeating-linear-gradient(115deg, rgba(244,241,236,.05) 0 1px, transparent 1px 22px);pointer-events:none}
.img-frame img{width:100%;height:100%;object-fit:cover}
.img-frame--tall{aspect-ratio:3/4}
.img-frame--square{aspect-ratio:1/1}
.img-frame__caption{position:absolute;left:14px;bottom:12px;z-index:1;margin:0;padding:5px 12px;border-radius:var(--radius-pill);background:rgba(11,11,13,.72);font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--paper)}

/* ---------- 10. 目录与折叠 ---------- */
.toc{position:sticky;top:calc(var(--header-h) + 20px);display:grid;gap:10px;font-family:var(--font-mono);font-size:12px}
.toc__title{margin:0;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.toc__list{list-style:none;margin:0;padding:0;display:grid;gap:2px;border-left:1px solid var(--line)}
.toc__link{display:block;margin-left:-1px;padding:8px 14px;border-left:2px solid transparent;color:var(--muted);text-decoration:none;letter-spacing:.04em;transition:color .25s var(--ease),border-color .25s var(--ease),background .25s var(--ease)}
.toc__link:hover{color:var(--paper)}
.toc__link[aria-current="true"]{color:var(--orange);border-left-color:var(--orange);background:rgba(255,90,31,.07)}

.accordion{display:grid;gap:12px}
.accordion__item{overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--ink-2)}
.accordion__trigger{display:flex;width:100%;align-items:center;gap:12px;padding:16px 22px;border:0;border-radius:var(--radius-pill);background:transparent;color:var(--paper);font-size:16px;font-weight:700;text-align:left;cursor:pointer}
.accordion__trigger::after{content:"+";margin-left:auto;font-family:var(--font-mono);font-size:18px;color:var(--orange)}
.accordion__trigger[aria-expanded="true"]{color:var(--orange)}
.accordion__trigger[aria-expanded="true"]::after{content:"–"}
.accordion__panel{display:none;padding:0 22px 18px;color:var(--muted)}
.accordion__panel[data-open]{display:block}

/* ---------- 11. 动效 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .42s var(--ease),transform .42s var(--ease);transition-delay:var(--reveal-delay,0ms)}
.reveal.is-visible{opacity:1;transform:none}

/* ---------- 12. 响应式与可用性 ---------- */
@media (max-width:1000px){
  .grid--5-7,.grid--4-8,.grid--halves,.grid--thirds{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  body{font-size:16px}
  .page-opening{grid-template-columns:minmax(0,1fr)}
  .page-opening__index{padding-top:0}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-meta{font-size:11px}
}
@media (max-width:520px){
  .brand__note{display:none}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .index-list__item{grid-template-columns:auto minmax(0,1fr);gap:10px}
  .index-list__meta{grid-column:2}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;transition-delay:0ms !important}
  .reveal{opacity:1;transform:none}
  .scroll-progress__bar{transition:none}
}