/* ============================================================
   火马电竞 · 共享样式 /assets/site.css
   暗夜紫夜幕基底 + 火马橙红 + 霓虹蓝 + 荧光黄绿行动色
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100vh}
img,svg,video{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:where(a,button,summary,input,select,textarea,[tabindex]):focus-visible{outline:2px solid #C8FF3D;outline-offset:3px;border-radius:4px}

/* ---------- 变量 ---------- */
:root{
  color-scheme:dark;
  --fh-orange:#FF4D1A;
  --fh-red:#D7261E;
  --fh-blue:#1E90FF;
  --fh-violet:#120B2E;
  --fh-black:#07060F;
  --fh-silver:#C7CCD8;
  --fh-lime:#C8FF3D;
  --fh-cyan:#47C7FF;
  --fh-magenta:#8E2DE2;
  --fh-sand:#E0A458;

  --fh-ink:#F2F5FB;
  --fh-muted:rgba(199,204,216,.72);
  --fh-muted-soft:rgba(199,204,216,.5);
  --fh-surface:rgba(255,255,255,.045);
  --fh-surface-2:rgba(18,11,46,.62);
  --fh-line:rgba(199,204,216,.16);
  --fh-line-strong:rgba(199,204,216,.34);

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

  --fh-h1:clamp(3rem,8vw,7rem);
  --fh-h2:clamp(2rem,4vw,3.5rem);
  --fh-h3:clamp(1.35rem,2.2vw,2rem);
  --fh-body:clamp(16px,0.35vw + 15px,18px);
  --fh-note:clamp(13px,.2vw + 12.5px,14px);
  --fh-data:clamp(2rem,5vw,4rem);

  --fh-radius:16px;
  --fh-radius-sm:9px;
  --fh-cut:20px;
  --fh-gap:clamp(1rem,2.4vw,1.75rem);
  --fh-section:clamp(2.6rem,6vw,5rem);
  --fh-break:1000px;
}

/* ---------- 基础排版 ---------- */
body{
  font-family:var(--fh-font-body);
  font-size:var(--fh-body);
  line-height:1.75;
  letter-spacing:.012em;
  color:var(--fh-muted);
  background-color:var(--fh-violet);
  background-image:
    radial-gradient(1100px 620px at 88% -12%, rgba(255,77,26,.20), transparent 64%),
    radial-gradient(900px 520px at 4% 108%, rgba(30,144,255,.17), transparent 62%),
    repeating-linear-gradient(115deg, rgba(142,45,226,.075) 0 2px, transparent 2px 16px);
  background-attachment:fixed;
  overflow-x:hidden;
}
h1,h2,h3,h4{font-family:var(--fh-font-display);font-weight:900;line-height:1.05;letter-spacing:-.012em;color:var(--fh-ink)}
h1{font-size:var(--fh-h1);text-transform:none}
h2{font-size:var(--fh-h2)}
h3{font-size:var(--fh-h3)}
p{text-wrap:pretty}
strong{color:var(--fh-ink)}
code,kbd,samp{font-family:var(--fh-font-mono);font-size:.9em}

/* ---------- 跳转链接 ---------- */
.fh-skip{
  position:absolute;left:1rem;top:-120px;z-index:200;
  padding:.65rem 1.1rem;background:var(--fh-lime);color:var(--fh-black);
  font-weight:800;font-size:.9rem;border-radius:0 0 12px 12px;transition:top .2s ease;
}
.fh-skip:focus{top:0}

/* ---------- 容器 ---------- */
.fh-shell{width:min(1240px,100% - clamp(1.5rem,5vw,3rem));margin-inline:auto}
.fh-section{padding-block:var(--fh-section)}
.fh-section--tight{padding-block:clamp(1.6rem,3.5vw,2.75rem)}
.fh-divider{height:1px;margin-block:clamp(1.4rem,4vw,3rem);background:linear-gradient(90deg,transparent,var(--fh-line-strong),transparent)}

/* ---------- 头部 ---------- */
.fh-header{position:sticky;top:0;z-index:60}

.fh-utility{
  background:var(--fh-black);
  border-bottom:1px solid var(--fh-line);
  font-size:13px;
  color:var(--fh-muted-soft);
}
.fh-utility__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:38px;padding-block:.35rem}
.fh-utility__line{display:flex;align-items:center;gap:.6rem;letter-spacing:.04em}
.fh-utility__pulse{
  width:8px;height:8px;flex:none;border-radius:50%;
  background:var(--fh-lime);box-shadow:0 0 0 0 rgba(200,255,61,.55);
  animation:fh-pulse 2.6s ease-out infinite;
}
@keyframes fh-pulse{
  0%{box-shadow:0 0 0 0 rgba(200,255,61,.5)}
  70%{box-shadow:0 0 0 10px rgba(200,255,61,0)}
  100%{box-shadow:0 0 0 0 rgba(200,255,61,0)}
}
.fh-utility__actions{display:flex;align-items:center;gap:1.15rem}
.fh-utility__meta{font-family:var(--fh-font-mono);font-size:12px;letter-spacing:.05em;color:rgba(199,204,216,.42)}
.fh-link{position:relative;font-weight:600;letter-spacing:.03em;color:var(--fh-silver)}
.fh-link--lime{color:var(--fh-lime)}
.fh-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;
  background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.fh-link:hover::after,.fh-link:focus-visible::after{transform:scaleX(1)}

.fh-bar{
  position:relative;
  background:linear-gradient(180deg,rgba(18,11,46,.97),rgba(7,6,15,.95));
  border-bottom:1px solid rgba(30,144,255,.3);
}
.fh-bar__inner{display:flex;align-items:center;gap:clamp(.75rem,2.6vw,2.25rem);padding-block:.8rem}
.fh-bar__flow{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--fh-orange),var(--fh-lime),var(--fh-cyan),transparent);
  background-size:220% 100%;opacity:.9;
  animation:fh-flow 7s linear infinite;
}
@keyframes fh-flow{from{background-position:0 0}to{background-position:220% 0}}

.fh-brand{display:flex;align-items:center;gap:.75rem;margin-inline-end:auto;min-width:0}
.fh-brand__mark{
  display:grid;place-items:center;flex:none;width:46px;height:46px;color:#fff;
  border-radius:14px 5px 14px 5px;
  background:linear-gradient(140deg,var(--fh-orange),var(--fh-red) 70%,var(--fh-magenta));
  box-shadow:0 0 0 1px rgba(255,77,26,.55),0 10px 26px rgba(255,77,26,.32);
}
.fh-brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.fh-brand__name{font-family:var(--fh-font-display);font-size:1.2rem;font-weight:900;letter-spacing:.09em;color:var(--fh-ink);line-height:1.15}
.fh-brand__tagline{font-family:var(--fh-font-mono);font-size:11.5px;letter-spacing:.19em;color:var(--fh-cyan);line-height:1.2}

.fh-navtoggle{
  display:none;align-items:center;gap:.55rem;
  padding:.55rem .85rem;border:1px solid var(--fh-line-strong);border-radius:10px;
  color:var(--fh-ink);font-size:.82rem;font-weight:800;letter-spacing:.14em;
}
.fh-navtoggle__bars{position:relative;display:block;width:18px;height:12px}
.fh-navtoggle__bars::before,.fh-navtoggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--fh-lime);
  transition:transform .25s ease,top .25s ease,bottom .25s ease;
}
.fh-navtoggle__bars::before{top:0}
.fh-navtoggle__bars::after{bottom:0}

.fh-nav{display:flex;align-items:center;gap:clamp(.6rem,1.8vw,1.6rem)}
.fh-nav__list{display:flex;align-items:center;gap:clamp(.45rem,1.5vw,1.25rem)}
.fh-nav__link{
  position:relative;display:inline-block;padding:.5rem 0;
  font-size:.94rem;font-weight:600;letter-spacing:.03em;color:var(--fh-muted);
  transition:color .2s ease;
}
.fh-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:.12rem;height:2px;
  background:linear-gradient(90deg,var(--fh-orange),var(--fh-lime));
  transform:scaleX(0);transform-origin:left;transition:transform .26s ease;
}
.fh-nav__link:hover,.fh-nav__link:focus-visible{color:var(--fh-ink)}
.fh-nav__link:hover::after,.fh-nav__link:focus-visible::after{transform:scaleX(1)}
.fh-nav__link[aria-current="page"]{color:var(--fh-ink)}
.fh-nav__link[aria-current="page"]::after{transform:scaleX(1);background:linear-gradient(90deg,var(--fh-orange),var(--fh-cyan))}
.fh-nav__cta{flex:none}

.fh-progress{
  position:fixed;top:0;left:0;z-index:120;height:3px;width:var(--fh-progress,0%);
  background:linear-gradient(90deg,var(--fh-orange),var(--fh-lime),var(--fh-cyan));
  pointer-events:none;transition:width .12s linear;
}

/* ---------- 按钮 ---------- */
.fh-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.35rem;border-radius:var(--fh-radius-sm);
  font-size:.9rem;font-weight:800;letter-spacing:.07em;white-space:nowrap;
  border:1px solid transparent;transition:transform .18s ease,box-shadow .22s ease,background-color .22s ease,color .22s ease,border-color .22s ease;
}
.fh-btn:hover{transform:translateY(-2px)}
.fh-btn:active{transform:translateY(0)}
.fh-btn--fire{background:linear-gradient(100deg,var(--fh-orange),var(--fh-red));color:#fff;box-shadow:0 12px 28px rgba(255,77,26,.32)}
.fh-btn--fire:hover{box-shadow:0 16px 34px rgba(255,77,26,.45)}
.fh-btn--lime{background:var(--fh-lime);color:#0B1020;box-shadow:0 10px 26px rgba(200,255,61,.26)}
.fh-btn--lime:hover{box-shadow:0 14px 32px rgba(200,255,61,.34)}
.fh-btn--ghost{border-color:var(--fh-line-strong);color:var(--fh-silver);background:rgba(255,255,255,.03)}
.fh-btn--ghost:hover{border-color:var(--fh-cyan);color:var(--fh-cyan)}

/* ---------- 页脚 ---------- */
.fh-footer{
  position:relative;margin-top:clamp(2.5rem,7vw,5.5rem);
  background:linear-gradient(180deg,rgba(11,8,32,.96),var(--fh-black));
  border-top:1px solid rgba(255,77,26,.35);
  color:var(--fh-muted-soft);
}
.fh-footer__track{
  position:absolute;top:-1px;left:0;right:0;height:3px;pointer-events:none;
  background:linear-gradient(90deg,transparent,var(--fh-orange),var(--fh-lime),var(--fh-cyan),transparent);
  background-size:220% 100%;animation:fh-flow 8s linear infinite;
}
.fh-footer__inner{
  display:grid;grid-template-columns:minmax(230px,1.05fr) minmax(0,2fr);
  gap:clamp(1.5rem,4vw,3.5rem);padding-block:clamp(2.4rem,5vw,4rem);
}
.fh-footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:.8rem}
.fh-footer__name{
  font-family:var(--fh-font-display);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:900;
  letter-spacing:.1em;color:var(--fh-ink);line-height:1.1;
}
.fh-footer__line{font-size:.92rem;line-height:1.8;max-width:34ch;color:var(--fh-muted)}
.fh-footer__badge{
  font-family:var(--fh-font-mono);font-size:12px;letter-spacing:.2em;
  color:var(--fh-sand);border:1px dashed rgba(224,164,88,.45);
  padding:.32rem .7rem;border-radius:999px;
}
.fh-footer__cta{margin-top:.35rem}
.fh-footer__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5rem}
.fh-footer__coltitle{
  font-family:var(--fh-font-mono);font-size:.76rem;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--fh-orange);margin-bottom:.9rem;
}
.fh-footer__links li + li{margin-top:.5rem}
.fh-footer__links a{position:relative;font-size:.92rem;color:var(--fh-muted);transition:color .2s ease,padding-left .2s ease}
.fh-footer__links a::before{
  content:"";position:absolute;left:-.85rem;top:.62em;width:.42rem;height:2px;
  background:var(--fh-lime);opacity:0;transition:opacity .2s ease;
}
.fh-footer__links a:hover,.fh-footer__links a:focus-visible{color:var(--fh-lime);padding-left:.2rem}
.fh-footer__links a:hover::before,.fh-footer__links a:focus-visible::before{opacity:1}

.fh-footer__contact{
  padding-block:clamp(1.6rem,3.5vw,2.4rem);
  border-top:1px dashed var(--fh-line);
}
.fh-footer__meta{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:.7rem 1.6rem;font-size:.92rem;color:var(--fh-muted);
}
.fh-footer__label{
  display:inline-block;min-width:5.2em;margin-inline-end:.5rem;
  font-family:var(--fh-font-mono);font-size:12px;letter-spacing:.12em;color:var(--fh-cyan);
}
.fh-footer__note{margin-top:1rem;font-size:var(--fh-note);color:var(--fh-muted-soft)}

.fh-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.6rem 1.5rem;
  padding-block:1.1rem;border-top:1px solid var(--fh-line);
  font-size:12.5px;color:rgba(199,204,216,.5);
}
.fh-footer__copy{font-family:var(--fh-font-mono);letter-spacing:.04em}
.fh-footer__icp{font-family:var(--fh-font-mono);letter-spacing:.04em}

.fh-totop{
  position:fixed;right:clamp(1rem,3vw,2rem);bottom:clamp(1rem,3vw,2rem);z-index:110;
  padding:.7rem 1.1rem;border-radius:999px;
  font-size:.78rem;font-weight:900;letter-spacing:.12em;color:#0B1020;
  background:var(--fh-lime);box-shadow:0 12px 30px rgba(200,255,61,.3);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.fh-totop.is-on{opacity:1;visibility:visible;transform:none}

/* ---------- 面包屑 ---------- */
.fh-breadcrumb{margin-block:clamp(1rem,2.5vw,1.6rem)}
.fh-breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-size:13px;font-family:var(--fh-font-mono);letter-spacing:.05em}
.fh-breadcrumb li{display:flex;align-items:center;gap:.5rem;color:var(--fh-muted-soft)}
.fh-breadcrumb li + li::before{content:"";width:14px;height:1px;background:var(--fh-line-strong);display:inline-block}
.fh-breadcrumb a{color:var(--fh-cyan)}
.fh-breadcrumb a:hover{color:var(--fh-lime)}
.fh-breadcrumb [aria-current="page"]{color:var(--fh-ink)}

/* ---------- 正文 ---------- */
.fh-prose{max-width:68ch;font-size:var(--fh-body);line-height:1.85;color:rgba(231,235,244,.82)}
.fh-prose > * + *{margin-top:1.1em}
.fh-prose h2{margin-top:1.8em;font-size:clamp(1.6rem,2.6vw,2.3rem)}
.fh-prose h3{margin-top:1.5em}
.fh-prose a{color:var(--fh-cyan);border-bottom:1px solid rgba(71,199,255,.45)}
.fh-prose a:hover{color:var(--fh-lime);border-bottom-color:rgba(200,255,61,.6)}
.fh-prose ul{display:grid;gap:.55rem}
.fh-prose ul li{position:relative;padding-left:1.45rem}
.fh-prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:.65rem;height:2px;background:var(--fh-orange)}
.fh-prose blockquote{
  padding:.9rem 1.2rem;border-left:3px solid var(--fh-orange);
  background:var(--fh-surface);border-radius:0 var(--fh-radius-sm) var(--fh-radius-sm) 0;color:var(--fh-muted);
}
.fh-lede{font-size:clamp(1.05rem,1.7vw,1.32rem);line-height:1.75;color:rgba(242,245,251,.9);max-width:56ch}
.fh-kicker{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--fh-font-mono);font-size:12px;font-weight:600;letter-spacing:.22em;
  text-transform:uppercase;color:var(--fh-lime);
}
.fh-kicker::before{content:"";width:26px;height:2px;background:linear-gradient(90deg,var(--fh-orange),var(--fh-lime))}
.fh-note{font-size:var(--fh-note);line-height:1.8;color:var(--fh-muted-soft);border-left:2px solid var(--fh-line-strong);padding-left:.85rem}

/* ---------- 网格 ---------- */
.fh-grid{display:grid;gap:var(--fh-gap)}
.fh-grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.fh-grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
.fh-grid--rail{grid-template-columns:minmax(0,.85fr) minmax(0,2.2fr)}
.fh-grid--rail-rev{grid-template-columns:minmax(0,2.2fr) minmax(0,.85fr)}
.fh-grid--rail-rev > :first-child{order:2}

/* ---------- 档案卡 ---------- */
.fh-card{
  position:relative;display:flex;flex-direction:column;gap:.7rem;
  padding:clamp(1.1rem,2.2vw,1.6rem);
  background:linear-gradient(160deg,var(--fh-surface),rgba(18,11,46,.55));
  border:1px solid var(--fh-line);
  border-radius:var(--fh-radius) var(--fh-radius-sm) var(--fh-radius) var(--fh-radius-sm);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.fh-card::before{
  content:"";position:absolute;top:-1px;left:clamp(1.1rem,2.2vw,1.6rem);width:44px;height:3px;
  background:linear-gradient(90deg,var(--fh-orange),var(--fh-lime));
}
.fh-card:hover{transform:translateY(-4px);border-color:rgba(30,144,255,.5);box-shadow:0 24px 50px rgba(7,6,15,.6)}
.fh-card__label{font-family:var(--fh-font-mono);font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--fh-cyan)}
.fh-card__title{font-size:clamp(1.15rem,1.8vw,1.5rem);font-weight:900;color:var(--fh-ink);line-height:1.25}
.fh-card__meta{display:flex;flex-wrap:wrap;gap:.45rem .9rem;font-family:var(--fh-font-mono);font-size:12px;color:var(--fh-muted-soft)}
.fh-card__body{font-size:.95rem;line-height:1.75;color:var(--fh-muted)}

/* ---------- 标签 ---------- */
.fh-tag{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.24rem .68rem;border-radius:999px;
  font-family:var(--fh-font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--fh-ink);background:rgba(255,77,26,.16);border:1px solid rgba(255,77,26,.45);
}
.fh-tag--blue{background:rgba(30,144,255,.15);border-color:rgba(30,144,255,.48);color:#DCEEFF}
.fh-tag--sand{background:rgba(224,164,88,.14);border-color:rgba(224,164,88,.45);color:#F6E1C4}
.fh-tag--lime{background:rgba(200,255,61,.14);border-color:rgba(200,255,61,.5);color:#EBFFC0}

/* ---------- 数据组 ---------- */
.fh-metric{display:flex;flex-direction:column;gap:.15rem}
.fh-metric__value{
  font-family:var(--fh-font-mono);font-size:var(--fh-data);font-weight:700;line-height:1;
  letter-spacing:-.02em;color:var(--fh-ink);
  background:linear-gradient(120deg,var(--fh-orange),var(--fh-lime));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.fh-metric__unit{font-family:var(--fh-font-mono);font-size:.9rem;letter-spacing:.08em;color:var(--fh-cyan)}
.fh-metric__label{font-size:var(--fh-note);letter-spacing:.06em;color:var(--fh-muted-soft)}

/* ---------- 图像容器 ---------- */
.fh-media{
  position:relative;overflow:hidden;isolation:isolate;
  border-radius:var(--fh-radius) var(--fh-radius-sm) var(--fh-radius) var(--fh-radius-sm);
  border:1px solid var(--fh-line-strong);
  background:
    linear-gradient(145deg,rgba(30,144,255,.22),rgba(18,11,46,.92) 52%,rgba(255,77,26,.2)),
    var(--fh-black);
}
.fh-media::before{
  content:"";position:absolute;inset:0;z-index:0;
  background:repeating-linear-gradient(90deg,rgba(199,204,216,.09) 0 1px,transparent 1px 46px),
             repeating-linear-gradient(0deg,rgba(199,204,216,.06) 0 1px,transparent 1px 34px);
  opacity:.85;
}
.fh-media::after{
  content:"";position:absolute;top:-45%;right:-32%;width:58%;height:190%;z-index:0;
  background:linear-gradient(90deg,transparent,rgba(255,77,26,.25),transparent);
  transform:rotate(17deg);
}
.fh-media img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.fh-media--16x9{aspect-ratio:16/9}
.fh-media--4x3{aspect-ratio:4/3}
.fh-media--1x1{aspect-ratio:1/1}
.fh-media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:1.1rem .95rem .7rem;
  font-family:var(--fh-font-mono);font-size:11.5px;letter-spacing:.09em;color:rgba(242,245,251,.82);
  background:linear-gradient(180deg,transparent,rgba(7,6,15,.85));
}
.fh-frame{
  position:relative;padding:clamp(1rem,2.6vw,2rem);
  border:1px solid var(--fh-line-strong);
  border-radius:var(--fh-radius) var(--fh-radius-sm) var(--fh-radius) var(--fh-radius-sm);
  background:linear-gradient(180deg,rgba(18,11,46,.55),rgba(7,6,15,.35));
}
.fh-frame::before,.fh-frame::after{
  content:"";position:absolute;width:34px;height:34px;pointer-events:none;
  border:2px solid var(--fh-orange);
}
.fh-frame::before{top:-2px;left:-2px;border-right:0;border-bottom:0}
.fh-frame::after{bottom:-2px;right:-2px;border-left:0;border-top:0}

/* ---------- 可展开内容组 ---------- */
.fh-panel{
  border:1px solid var(--fh-line);border-radius:var(--fh-radius-sm);
  background:var(--fh-surface);overflow:hidden;
}
.fh-panel + .fh-panel{margin-top:.65rem}
.fh-panel__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;width:100%;
  padding:1rem clamp(.9rem,2vw,1.3rem);text-align:left;
  font-size:1.03rem;font-weight:700;color:var(--fh-ink);
  transition:background-color .2s ease,color .2s ease;
}
.fh-panel__trigger:hover{background:rgba(30,144,255,.1);color:var(--fh-lime)}
.fh-panel__icon{
  position:relative;flex:none;width:18px;height:18px;border-radius:50%;
  border:1px solid var(--fh-line-strong);
}
.fh-panel__icon::before,.fh-panel__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--fh-lime);
  transform:translate(-50%,-50%);transition:transform .25s ease,opacity .25s ease;
}
.fh-panel__icon::before{width:9px;height:1.5px}
.fh-panel__icon::after{width:1.5px;height:9px}
.fh-panel__trigger[aria-expanded="true"] .fh-panel__icon::after{transform:translate(-50%,-50%) scaleY(0);opacity:0}
.fh-panel__body{padding:0 clamp(.9rem,2vw,1.3rem) 1.1rem;font-size:.96rem;line-height:1.8;color:var(--fh-muted)}
.fh-panel__body[hidden]{display:none}

/* ---------- 分类标签页 ---------- */
.fh-tabs__list{display:flex;flex-wrap:wrap;gap:.5rem;padding-bottom:.9rem;border-bottom:1px solid var(--fh-line)}
.fh-tab{
  padding:.5rem 1rem;border-radius:999px;border:1px solid var(--fh-line);
  font-family:var(--fh-font-mono);font-size:12.5px;letter-spacing:.08em;color:var(--fh-muted);
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.fh-tab:hover{color:var(--fh-ink);border-color:var(--fh-line-strong)}
.fh-tab[aria-selected="true"]{
  color:#0B1020;background:linear-gradient(100deg,var(--fh-lime),var(--fh-cyan));
  border-color:transparent;font-weight:700;
}
.fh-tabpanel{padding-top:1.2rem}
.fh-tabpanel[hidden]{display:none}

/* ---------- 时间轴 ---------- */
.fh-timeline{position:relative;padding-left:1.7rem}
.fh-timeline::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--fh-orange),var(--fh-magenta),var(--fh-blue));
  opacity:.7;
}
.fh-timeline__item{position:relative;padding-block:.5rem}
.fh-timeline__item + .fh-timeline__item{margin-top:.9rem}
.fh-timeline__mark{
  position:absolute;left:-1.7rem;top:1.05rem;width:14px;height:14px;border-radius:50%;
  background:var(--fh-black);border:2px solid var(--fh-orange);
  box-shadow:0 0 0 4px rgba(255,77,26,.14);
}
.fh-timeline__item.is-current .fh-timeline__mark{border-color:var(--fh-lime);box-shadow:0 0 0 4px rgba(200,255,61,.18)}

/* ---------- 显现 ---------- */
.fh-reveal{transition:opacity .6s ease,transform .6s cubic-bezier(.2,.7,.2,1)}
html.fh-js .fh-reveal:not(.is-visible){opacity:0;transform:translateY(20px)}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .fh-utility__meta{display:none}
}
@media (max-width:1000px){
  .fh-navtoggle{display:inline-flex}
  .fh-header[data-open="true"] .fh-navtoggle__bars::before{top:5px;transform:rotate(45deg)}
  .fh-header[data-open="true"] .fh-navtoggle__bars::after{bottom:5px;transform:rotate(-45deg)}
  .fh-nav{
    position:absolute;left:0;right:0;top:100%;z-index:55;
    flex-direction:column;align-items:stretch;gap:0;
    max-height:min(76vh,560px);overflow-y:auto;
    padding:1rem clamp(1rem,5vw,2rem) 1.4rem;
    background:linear-gradient(180deg,rgba(18,11,46,.99),rgba(7,6,15,.99));
    border-bottom:1px solid rgba(30,144,255,.4);
    box-shadow:0 34px 60px rgba(0,0,0,.6);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .26s ease,transform .26s ease,visibility .26s;
  }
  .fh-header[data-open="true"] .fh-nav{opacity:1;visibility:visible;transform:none}
  .fh-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .fh-nav__list li + li{border-top:1px solid var(--fh-line)}
  .fh-nav__link{display:block;padding:.85rem 0;font-size:1.05rem}
  .fh-nav__link::after{bottom:.35rem}
  .fh-nav__cta{width:100%;margin-top:1.1rem;padding-block:.9rem}
}
@media (max-width:900px){
  .fh-grid--halves,.fh-grid--thirds,.fh-grid--rail,.fh-grid--rail-rev{grid-template-columns:minmax(0,1fr)}
  .fh-grid--rail-rev > :first-child{order:0}
  .fh-footer__inner{grid-template-columns:minmax(0,1fr)}
  .fh-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:1.4rem}
}
@media (max-width:560px){
  .fh-brand__mark{width:40px;height:40px}
  .fh-brand__name{font-size:1.05rem}
  .fh-brand__tagline{font-size:10.5px;letter-spacing:.14em}
  .fh-utility__line{font-size:12px}
  .fh-footer__cols{grid-template-columns:minmax(0,1fr)}
  .fh-footer__meta{grid-template-columns:minmax(0,1fr)}
  .fh-footer__label{display:block;min-width:0;margin-bottom:.15rem}
  .fh-btn{width:100%}
  .fh-btn.fh-nav__cta{width:100%}
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.fh-js .fh-reveal:not(.is-visible){opacity:1;transform:none}
  .fh-bar__flow,.fh-footer__track,.fh-utility__pulse{animation:none}
}