/* ========== 星空赛场 · 共享样式 /assets/site.css ========== */

/* ---------- 1. 变量 ---------- */
:root{
  --sk-ink-900:#071026;
  --sk-ink-800:#0B1B3A;
  --sk-panel:#11264F;
  --sk-teal:#1FA8A0;
  --sk-teal-deep:#0E6B66;
  --sk-amber:#F5A623;
  --sk-amber-soft:#FFD27A;
  --sk-violet:#6C5CE7;
  --sk-ice:#E8EEF9;
  --sk-body:#B9C7DE;
  --sk-mist:#8FA3C4;
  --sk-line:#2E3F63;
  --sk-line-soft:rgba(46,63,99,.7);
  --sk-max:1200px;
  --sk-gutter:clamp(18px,4vw,40px);
  --sk-radius:18px;
  --sk-radius-sm:12px;
  --sk-shadow:0 24px 60px -34px rgba(0,0,0,.92);
  --sk-font-sans:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sk-font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;
  --sk-ease:cubic-bezier(.22,.68,.24,1);
}

/* ---------- 2. reset 与星图底色 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:120px;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0}
a{color:var(--sk-teal);text-decoration:none}
a:hover{color:var(--sk-amber-soft)}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--sk-font-sans);
  font-size:clamp(1rem,.96rem + .2vw,1.06rem);
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--sk-body);
  background-color:var(--sk-ink-900);
  background-image:
    radial-gradient(1.5px 1.5px at 28px 42px, rgba(232,238,249,.75), transparent 100%),
    radial-gradient(1.5px 1.5px at 186px 128px, rgba(31,168,160,.65), transparent 100%),
    radial-gradient(2px 2px at 322px 256px, rgba(255,210,122,.6), transparent 100%),
    radial-gradient(1.5px 1.5px at 92px 318px, rgba(108,92,231,.7), transparent 100%),
    radial-gradient(1.2px 1.2px at 384px 84px, rgba(232,238,249,.5), transparent 100%),
    radial-gradient(1100px 620px at 78% -8%, rgba(108,92,231,.26), transparent 62%),
    radial-gradient(880px 520px at 4% 2%, rgba(31,168,160,.16), transparent 60%),
    linear-gradient(180deg,#071026 0%,#0B1B3A 48%,#071026 100%);
  background-size:420px 420px,420px 420px,420px 420px,420px 420px,420px 420px,auto,auto,auto;
  background-repeat:repeat,repeat,repeat,repeat,repeat,no-repeat,no-repeat,no-repeat;
  background-attachment:fixed,fixed,fixed,fixed,fixed,fixed,fixed,fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:rgba(245,166,35,.36);color:#fff}
:where(a,button,summary,input,select,textarea):focus-visible{
  outline:2px solid var(--sk-amber-soft);
  outline-offset:3px;
  border-radius:6px;
}
#main-content{display:block;scroll-margin-top:110px}
strong,b{font-weight:800;color:var(--sk-ice)}

/* ---------- 3. 跳过链接 ---------- */
.sk-skip{
  position:fixed;
  left:50%;
  top:0;
  z-index:200;
  transform:translate(-50%,-160%);
  padding:.72rem 1.4rem;
  background:var(--sk-amber);
  color:#231400;
  font-weight:800;
  font-size:.9rem;
  letter-spacing:.06em;
  border-radius:0 0 12px 12px;
  box-shadow:0 14px 30px -16px rgba(0,0,0,.9);
  transition:transform .18s var(--sk-ease);
}
.sk-skip:focus,.sk-skip:focus-visible{transform:translate(-50%,0);color:#1B0F01}

/* ---------- 4. 排版组件 ---------- */
.sk-eyebrow{
  font-family:var(--sk-font-mono);
  font-size:.72rem;
  letter-spacing:.34em;
  text-transform:uppercase;
  color:var(--sk-teal);
}
.sk-display{
  font-size:clamp(2.1rem,6vw,4.2rem);
  line-height:1.05;
  font-weight:900;
  letter-spacing:.02em;
  color:var(--sk-ice);
  text-wrap:balance;
}
.sk-title{
  font-size:clamp(1.3rem,2.6vw,1.95rem);
  line-height:1.22;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--sk-ice);
}
.sk-lede{
  font-size:clamp(1.02rem,1.4vw,1.2rem);
  line-height:1.85;
  color:#C8D5E9;
  max-width:62ch;
}
.sk-body{max-width:70ch;color:var(--sk-body)}
.sk-note{font-size:.84rem;line-height:1.75;color:var(--sk-mist)}
.sk-num{
  font-family:var(--sk-font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
  color:var(--sk-ice);
}
.sk-hl{color:var(--sk-teal);font-weight:700}
.sk-hl--amber{color:var(--sk-amber-soft);font-weight:700}

/* ---------- 5. 布局组件 ---------- */
.sk-shell{
  width:100%;
  max-width:var(--sk-max);
  margin-inline:auto;
  padding-inline:var(--sk-gutter);
}
.sk-section{
  position:relative;
  padding-block:clamp(44px,7vw,96px);
}
.sk-section--tight{padding-block:clamp(26px,4vw,54px)}
.sk-section--alt{
  background:linear-gradient(180deg,rgba(17,38,79,.55),rgba(7,16,38,.18));
  border-block:1px solid rgba(46,63,99,.55);
}
.sk-rule{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,transparent,rgba(31,168,160,.6),rgba(245,166,35,.5),transparent);
}
.sk-grid{
  display:grid;
  gap:clamp(14px,2vw,24px);
  grid-template-columns:repeat(auto-fit,minmax(min(100%,var(--sk-grid-min,260px)),1fr));
}
.sk-split{
  display:grid;
  gap:clamp(22px,4vw,48px);
  grid-template-columns:1.4fr .9fr;
  align-items:start;
}
.sk-visually-hidden{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 6. 按钮 ---------- */
.sk-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.6em;
  padding:.78em 1.5em;
  border:1px solid transparent;
  border-radius:999px;
  font-family:var(--sk-font-sans);
  font-size:.95rem;
  font-weight:800;
  letter-spacing:.08em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--sk-ease),background-color .18s var(--sk-ease),color .18s var(--sk-ease),border-color .18s var(--sk-ease),box-shadow .18s var(--sk-ease);
}
.sk-btn--amber{
  background:linear-gradient(135deg,var(--sk-amber),#E08D0C);
  color:#2A1702;
  box-shadow:0 12px 26px -14px rgba(245,166,35,.9);
}
.sk-btn--amber:hover{color:#1B0F01;transform:translateY(-1px);box-shadow:0 16px 32px -14px rgba(245,166,35,.95)}
.sk-btn--ghost{
  background:rgba(31,168,160,.08);
  color:var(--sk-ice);
  border-color:rgba(31,168,160,.55);
}
.sk-btn--ghost:hover{background:rgba(31,168,160,.18);color:#fff;border-color:var(--sk-teal)}
.sk-btn--sm{padding:.5em 1.05em;font-size:.82rem;letter-spacing:.06em}
.sk-btn--block{width:100%}

/* ---------- 7. 卡片 / 玻璃层 / 标签 ---------- */
.sk-card{
  position:relative;
  overflow:hidden;
  padding:clamp(18px,2.4vw,28px);
  border:1px solid rgba(46,63,99,.9);
  border-radius:var(--sk-radius);
  background:linear-gradient(165deg,rgba(17,38,79,.94),rgba(9,20,44,.97));
  box-shadow:var(--sk-shadow);
}
.sk-card::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--sk-teal),rgba(245,166,35,.5) 45%,transparent 78%);
  opacity:.9;
}
.sk-card__label{
  font-family:var(--sk-font-mono);
  font-size:.7rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--sk-teal);
}
.sk-card__title{margin-top:.5rem;font-size:1.16rem;font-weight:800;color:var(--sk-ice);line-height:1.35}
.sk-card__meta{margin-top:.65rem;font-size:.86rem;color:var(--sk-mist);line-height:1.7}
.sk-glass{
  padding:clamp(18px,2.4vw,28px);
  border:1px solid rgba(232,238,249,.16);
  border-radius:var(--sk-radius);
  background:linear-gradient(155deg,rgba(232,238,249,.1),rgba(11,27,58,.55));
  backdrop-filter:blur(14px) saturate(130%);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  box-shadow:0 22px 54px -32px rgba(0,0,0,.95);
}
.sk-tag{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:.26em .72em;
  border:1px solid currentColor;
  border-radius:999px;
  font-family:var(--sk-font-mono);
  font-size:.71rem;
  letter-spacing:.12em;
  color:var(--sk-mist);
  white-space:nowrap;
}
.sk-tag--teal{color:var(--sk-teal);background:rgba(31,168,160,.1)}
.sk-tag--amber{color:var(--sk-amber-soft);background:rgba(245,166,35,.12)}
.sk-tag--violet{color:#A99CF7;background:rgba(108,92,231,.16)}

/* ---------- 8. 表格 ---------- */
.sk-table-wrap{
  width:100%;
  overflow-x:auto;
  border:1px solid rgba(46,63,99,.9);
  border-radius:var(--sk-radius);
  background:rgba(9,20,44,.74);
  box-shadow:var(--sk-shadow);
}
.sk-table{
  width:100%;
  min-width:540px;
  border-collapse:collapse;
  font-size:.92rem;
}
.sk-table th,.sk-table td{
  padding:.85rem 1rem;
  text-align:left;
  border-bottom:1px solid rgba(46,63,99,.7);
  vertical-align:top;
}
.sk-table thead th{
  font-family:var(--sk-font-mono);
  font-size:.7rem;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sk-mist);
  background:rgba(17,38,79,.9);
  white-space:nowrap;
}
.sk-table tbody tr:hover{background:rgba(31,168,160,.08)}
.sk-table tbody tr:last-child th,.sk-table tbody tr:last-child td{border-bottom:0}
.sk-table td .sk-num{color:var(--sk-ice)}

/* ---------- 9. 图片容器基础规则 ---------- */
.sk-media{margin:0;min-width:0}
.sk-media__frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid rgba(46,63,99,.9);
  border-radius:var(--sk-radius);
  background:
    radial-gradient(120% 90% at 78% 10%,rgba(31,168,160,.3),transparent 62%),
    radial-gradient(100% 80% at 10% 90%,rgba(108,92,231,.26),transparent 60%),
    linear-gradient(160deg,#11264F 0%,#071026 78%);
  box-shadow:var(--sk-shadow);
}
.sk-media__frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(1.5px 1.5px at 18% 26%,rgba(232,238,249,.75),transparent 100%),
    radial-gradient(1.5px 1.5px at 62% 16%,rgba(255,210,122,.65),transparent 100%),
    radial-gradient(2px 2px at 84% 64%,rgba(31,168,160,.8),transparent 100%),
    radial-gradient(1.5px 1.5px at 34% 80%,rgba(108,92,231,.8),transparent 100%);
  opacity:.85;
  mix-blend-mode:screen;
}
.sk-media__img{
  position:relative;
  z-index:1;
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.sk-media__placeholder{
  position:absolute;
  inset:0;
  z-index:1;
  display:grid;
  place-items:center;
  padding:1rem;
  text-align:center;
  font-family:var(--sk-font-mono);
  font-size:.72rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:rgba(232,238,249,.6);
}
.sk-media__caption{margin-top:.7rem;font-size:.82rem;color:var(--sk-mist);letter-spacing:.04em}
.sk-media--wide .sk-media__frame{aspect-ratio:21/9}
.sk-media--tall .sk-media__frame{aspect-ratio:3/4}
.sk-media--square .sk-media__frame{aspect-ratio:1/1}

/* ---------- 10. 面包屑 ---------- */
.sk-breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.55em;
  font-family:var(--sk-font-mono);
  font-size:.73rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--sk-mist);
}
.sk-breadcrumbs__link{color:var(--sk-mist);text-decoration:none;transition:color .2s var(--sk-ease)}
.sk-breadcrumbs__link:hover,.sk-breadcrumbs__link:focus-visible{color:var(--sk-teal)}
.sk-breadcrumbs__sep{color:rgba(143,163,196,.55)}
.sk-breadcrumbs__current{color:var(--sk-amber-soft)}

/* ---------- 11. 头部 ---------- */
.sk-header{
  position:sticky;
  top:0;
  z-index:100;
  color:var(--sk-ice);
  background:linear-gradient(180deg,rgba(7,16,38,.97) 0%,rgba(11,27,58,.92) 100%);
  border-bottom:1px solid rgba(46,63,99,.95);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
}
.sk-header__inner{
  max-width:var(--sk-max);
  margin-inline:auto;
  padding:12px var(--sk-gutter) 0;
}
.sk-masthead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  grid-template-areas:"eyebrow brand meta";
  align-items:center;
  column-gap:clamp(12px,2vw,28px);
  padding-bottom:10px;
}
.sk-masthead__eyebrow{
  grid-area:eyebrow;
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--sk-font-mono);
  font-size:.68rem;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--sk-teal);
  white-space:nowrap;
}
.sk-masthead__eyebrowdot{
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--sk-teal);
  box-shadow:0 0 0 4px rgba(31,168,160,.16),0 0 12px rgba(31,168,160,.9);
  animation:sk-pulse 3.6s var(--sk-ease) infinite;
}
@keyframes sk-pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.5;transform:scale(.82)}
}
.sk-brand{
  grid-area:brand;
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:.78rem;
  color:var(--sk-ice);
  text-decoration:none;
}
.sk-brand__mark{
  flex:0 0 auto;
  width:38px;
  height:38px;
  display:grid;
  place-items:center;
  border:1px solid rgba(31,168,160,.75);
  border-radius:12px;
  transform:rotate(45deg);
  background:radial-gradient(circle at 50% 50%,rgba(31,168,160,.3),rgba(11,27,58,.25) 72%);
  box-shadow:0 0 22px -6px rgba(31,168,160,.65),inset 0 0 12px rgba(31,168,160,.2);
  transition:border-color .2s var(--sk-ease),box-shadow .2s var(--sk-ease);
}
.sk-brand__markdot{
  width:8px;
  height:8px;
  border-radius:50%;
  background:linear-gradient(135deg,var(--sk-amber),var(--sk-amber-soft));
  box-shadow:0 0 10px rgba(245,166,35,.95);
}
.sk-brand__text{display:flex;flex-direction:column;line-height:1.05}
.sk-brand__name{
  font-size:clamp(1.22rem,2.4vw,1.6rem);
  font-weight:900;
  letter-spacing:.3em;
  color:var(--sk-ice);
  transition:color .2s var(--sk-ease);
}
.sk-brand__sub{
  margin-top:.34em;
  font-family:var(--sk-font-mono);
  font-size:.63rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sk-mist);
}
.sk-brand:hover .sk-brand__name{color:#fff}
.sk-brand:hover .sk-brand__mark{border-color:var(--sk-amber);box-shadow:0 0 26px -4px rgba(245,166,35,.75)}
.sk-masthead__meta{
  grid-area:meta;
  justify-self:end;
  display:flex;
  align-items:center;
  gap:1rem;
}
.sk-masthead__coords{
  font-family:var(--sk-font-mono);
  font-size:.67rem;
  letter-spacing:.14em;
  color:var(--sk-mist);
  white-space:nowrap;
}
.sk-navtoggle{
  grid-area:toggle;
  justify-self:end;
  display:none;
  align-items:center;
  gap:.6rem;
  padding:.5rem .85rem;
  border:1px solid rgba(31,168,160,.45);
  border-radius:999px;
  background:rgba(31,168,160,.1);
  color:var(--sk-ice);
  cursor:pointer;
  transition:background-color .2s var(--sk-ease),border-color .2s var(--sk-ease);
}
.sk-navtoggle:hover{background:rgba(31,168,160,.2)}
.sk-navtoggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:18px;
}
.sk-navtoggle__bar{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .2s var(--sk-ease),opacity .2s var(--sk-ease),width .2s var(--sk-ease);
}
.sk-navtoggle__bar:nth-child(2){width:70%;background:var(--sk-amber)}
.sk-navtoggle__label{
  font-family:var(--sk-font-mono);
  font-size:.7rem;
  letter-spacing:.2em;
}
.sk-navtoggle[aria-expanded="true"]{
  background:rgba(245,166,35,.16);
  border-color:rgba(245,166,35,.6);
}
.sk-navtoggle[aria-expanded="true"] .sk-navtoggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.sk-navtoggle[aria-expanded="true"] .sk-navtoggle__bar:nth-child(2){opacity:0}
.sk-navtoggle[aria-expanded="true"] .sk-navtoggle__bar:nth-child(3){width:100%;transform:translateY(-6px) rotate(-45deg)}
.sk-nav{border-top:1px solid rgba(46,63,99,.6)}
.sk-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(2px,1.4vw,22px);
}
.sk-nav__item{display:flex}
.sk-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:.5em;
  padding:11px 6px 13px;
  color:var(--sk-mist);
  font-size:.9rem;
  font-weight:600;
  letter-spacing:.14em;
  white-space:nowrap;
  text-decoration:none;
  transition:color .2s var(--sk-ease);
}
.sk-nav__link::after{
  content:"";
  position:absolute;
  left:6px;
  right:6px;
  bottom:7px;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--sk-teal),var(--sk-amber));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--sk-ease);
}
.sk-nav__link:hover,.sk-nav__link:focus-visible{color:var(--sk-ice)}
.sk-nav__link:hover::after,.sk-nav__link:focus-visible::after{transform:scaleX(1)}
.sk-nav__link[aria-current="page"]{color:var(--sk-ice);font-weight:800}
.sk-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.sk-nav__link[aria-current="page"]::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--sk-amber);
  box-shadow:0 0 8px rgba(245,166,35,.95);
}

/* ---------- 12. 页脚 ---------- */
.sk-footer{
  position:relative;
  overflow:hidden;
  color:var(--sk-body);
  border-top:1px solid rgba(46,63,99,.95);
  background:
    radial-gradient(900px 460px at 86% 0%,rgba(108,92,231,.18),transparent 62%),
    linear-gradient(180deg,#081229 0%,#050C1C 62%,#071026 100%);
}
.sk-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(ellipse 62% 46% at 12% 114%,transparent 0 40%,rgba(31,168,160,.18) 40.4% 41%,transparent 41.4%),
    radial-gradient(ellipse 74% 54% at 12% 114%,transparent 0 52%,rgba(31,168,160,.11) 52.4% 53%,transparent 53.4%),
    radial-gradient(ellipse 86% 62% at 12% 114%,transparent 0 64%,rgba(108,92,231,.13) 64.4% 65%,transparent 65.4%),
    radial-gradient(2px 2px at 84% 22%,rgba(255,210,122,.7),transparent 100%),
    radial-gradient(1.5px 1.5px at 68% 12%,rgba(232,238,249,.6),transparent 100%),
    radial-gradient(1.5px 1.5px at 92% 46%,rgba(31,168,160,.7),transparent 100%);
}
.sk-footer__inner{
  position:relative;
  max-width:var(--sk-max);
  margin-inline:auto;
  padding:clamp(38px,6vw,72px) var(--sk-gutter) clamp(20px,3vw,28px);
}
.sk-footer__grid{
  display:grid;
  grid-template-columns:1.5fr .85fr .95fr 1.15fr;
  gap:clamp(24px,3.4vw,52px);
}
.sk-footer__brand{max-width:34ch;min-width:0}
.sk-footer__name{
  font-size:1.45rem;
  font-weight:900;
  letter-spacing:.26em;
  color:var(--sk-ice);
}
.sk-footer__brandline{
  display:flex;
  align-items:center;
  gap:.55rem;
  margin-top:.6rem;
  font-family:var(--sk-font-mono);
  font-size:.67rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sk-teal);
}
.sk-footer__branddot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--sk-amber);
  box-shadow:0 0 10px rgba(245,166,35,.95);
}
.sk-footer__blurb{
  margin-top:1rem;
  font-size:.9rem;
  line-height:1.85;
  color:var(--sk-mist);
}
.sk-footer__col{min-width:0}
.sk-footer__coltitle{
  padding-bottom:.7rem;
  margin-bottom:.85rem;
  border-bottom:1px solid rgba(46,63,99,.85);
  font-family:var(--sk-font-mono);
  font-size:.75rem;
  font-weight:600;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--sk-ice);
}
.sk-footer__links{display:grid;gap:.5rem}
.sk-footer__link{
  position:relative;
  display:inline-block;
  padding-left:0;
  color:var(--sk-mist);
  font-size:.92rem;
  text-decoration:none;
  transition:color .2s var(--sk-ease),padding-left .2s var(--sk-ease);
}
.sk-footer__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:0;
  height:1px;
  background:var(--sk-teal);
  transition:width .2s var(--sk-ease);
}
.sk-footer__link:hover,.sk-footer__link:focus-visible{color:var(--sk-amber-soft);padding-left:14px}
.sk-footer__link:hover::before,.sk-footer__link:focus-visible::before{width:9px}
.sk-footer__contactlist{display:grid;gap:.8rem}
.sk-footer__contactrow{
  display:grid;
  grid-template-columns:4.6em minmax(0,1fr);
  gap:.7rem;
  align-items:baseline;
}
.sk-footer__label{
  font-family:var(--sk-font-mono);
  font-size:.67rem;
  letter-spacing:.1em;
  color:var(--sk-teal);
}
.sk-footer__value{
  color:var(--sk-body);
  font-size:.88rem;
  line-height:1.7;
  word-break:break-word;
}
.sk-footer__value--num{
  font-family:var(--sk-font-mono);
  letter-spacing:.04em;
  color:var(--sk-amber-soft);
}
.sk-footer__note{
  margin-top:1rem;
  padding-top:.9rem;
  border-top:1px dashed rgba(46,63,99,.9);
  font-size:.78rem;
  line-height:1.75;
  color:var(--sk-mist);
}
.sk-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.8rem 1.4rem;
  margin-top:clamp(26px,4vw,44px);
  padding-top:1.1rem;
  border-top:1px solid rgba(46,63,99,.85);
}
.sk-footer__legal{
  font-family:var(--sk-font-mono);
  font-size:.74rem;
  letter-spacing:.08em;
  color:var(--sk-mist);
}
.sk-footer__meta{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  font-family:var(--sk-font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  color:var(--sk-mist);
}
.sk-footer__metadot{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--sk-teal);
}

/* ---------- 13. 滚动进度条（JS 生成） ---------- */
.sk-progress{
  position:fixed;
  inset:0 0 auto 0;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--sk-teal),var(--sk-amber) 55%,var(--sk-violet));
  z-index:130;
  pointer-events:none;
  transition:transform .12s linear;
}

/* ---------- 14. 滚动显现 ---------- */
.sk-js [data-reveal]{
  opacity:0;
  transform:translate3d(0,22px,0);
  transition:opacity .7s var(--sk-ease),transform .7s var(--sk-ease);
}
.sk-js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1040px){
  .sk-footer__grid{grid-template-columns:1fr 1fr}
  .sk-footer__brand{grid-column:1/-1;max-width:none}
  .sk-split{grid-template-columns:1fr}
}
@media (max-width:960px){
  html{scroll-padding-top:96px}
  .sk-masthead{
    grid-template-columns:minmax(0,1fr) auto;
    grid-template-areas:"brand toggle";
    column-gap:12px;
    padding-bottom:12px;
  }
  .sk-masthead__eyebrow,.sk-masthead__meta{display:none}
  .sk-brand{justify-self:start}
  .sk-navtoggle{display:inline-flex}
  .sk-nav{display:none;border-top:1px solid rgba(46,63,99,.6)}
  .sk-nav[data-open]{display:block}
  .sk-nav__list{flex-direction:column;align-items:stretch;gap:0;padding:4px 0 16px}
  .sk-nav__item{display:block}
  .sk-nav__link{
    width:100%;
    justify-content:space-between;
    padding:15px 4px;
    font-size:1rem;
    letter-spacing:.08em;
    border-bottom:1px solid rgba(46,63,99,.6);
  }
  .sk-nav__link::after{display:none}
  .sk-nav__link[aria-current="page"]{color:var(--sk-amber-soft)}
  .sk-nav__link[aria-current="page"]::before{order:2}
}
@media (max-width:760px){
  .sk-header__inner{padding-top:10px}
  .sk-brand__mark{width:34px;height:34px;border-radius:10px}
  .sk-brand__name{letter-spacing:.22em}
  .sk-brand__sub{letter-spacing:.14em}
  .sk-card,.sk-glass{border-radius:var(--sk-radius-sm)}
  .sk-grid{gap:14px}
}
@media (max-width:620px){
  .sk-footer__grid{grid-template-columns:1fr}
  .sk-footer__contactrow{grid-template-columns:1fr;gap:.15rem}
  .sk-footer__base{flex-direction:column;align-items:flex-start}
  .sk-table{min-width:460px}
}

/* ---------- 16. 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .sk-js [data-reveal]{opacity:1 !important;transform:none !important}
  .sk-masthead__eyebrowdot{animation:none}
  .sk-progress{transition:none}
}