/* ============================================================
   星游指南 / galaxy-xingyou.com.cn
   共享外壳样式 · /assets/site.css
   深空墨蓝 · 星云靛蓝 · 极光青锚点 · 切角与轨道线
   ============================================================ */

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
img,svg{display:block;max-width:100%}

/* ---------- design tokens ---------- */
:root{
  --xy-ink:#070A18;
  --xy-nebula:#111633;
  --xy-panel:#1B2247;
  --xy-white:#F4F7FF;
  --xy-dust:#A8B5D6;
  --xy-cyan:#3BF0D0;
  --xy-magenta:#FF4FA3;
  --xy-gold:#FFC86B;
  --xy-violet:#8B7BFF;
  --xy-green:#62E6A7;

  --xy-line:rgba(168,181,214,.18);
  --xy-line-strong:rgba(168,181,214,.32);
  --xy-glow-cyan:rgba(59,240,208,.45);

  --xy-cut:18px;
  --xy-cut-sm:8px;

  --xy-font-display:"Space Grotesk","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --xy-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --xy-font-mono:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --xy-pad:5vw;
  --xy-header-h:74px;
  --xy-max:1560px;
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  font-family:var(--xy-font-body);
  font-size:clamp(1rem,.55vw + .9rem,1.0625rem);
  line-height:1.75;
  font-weight:400;
  color:var(--xy-white);
  background-color:var(--xy-ink);
  background-image:
    radial-gradient(1180px 620px at 84% -12%,rgba(139,123,255,.20),transparent 62%),
    radial-gradient(900px 520px at 4% 8%,rgba(255,79,163,.10),transparent 66%),
    radial-gradient(760px 460px at 52% 112%,rgba(59,240,208,.07),transparent 72%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:rgba(59,240,208,.30);color:#fff}
h1,h2,h3,h4{font-family:var(--xy-font-display);font-weight:700;letter-spacing:.04em;line-height:1.2}
p{max-width:72ch}
strong,b{font-weight:700;color:var(--xy-white)}

:where(a,button,[tabindex],summary):focus-visible{
  outline:2px solid var(--xy-cyan);
  outline-offset:3px;
  border-radius:2px;
}
#main-content:focus{outline:none}
#main-content:focus-visible{outline:2px dashed var(--xy-cyan);outline-offset:8px}

/* ---------- skip link ---------- */
.xy-skip{
  position:fixed;top:10px;left:10px;z-index:300;
  padding:.7em 1.1em;
  font-family:var(--xy-font-mono);font-size:.8rem;letter-spacing:.12em;
  color:#06121B;background:var(--xy-gold);text-decoration:none;
  transform:translateY(-200%);
  transition:transform .2s ease;
}
.xy-skip:focus{transform:translateY(0)}

/* ---------- header ---------- */
.xy-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  color:var(--xy-white);
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,backdrop-filter .25s ease,box-shadow .25s ease;
}
.xy-header[data-scrolled="true"],
.xy-header[data-open]{
  background:rgba(7,10,24,.94);
  border-bottom-color:var(--xy-line);
  backdrop-filter:blur(14px) saturate(1.1);
  -webkit-backdrop-filter:blur(14px) saturate(1.1);
  box-shadow:0 24px 52px -40px #000;
}

.xy-header__progress{
  position:absolute;top:0;left:0;right:0;height:2px;
  background:rgba(168,181,214,.12);
  overflow:hidden;
}
.xy-header__progress-bar{
  display:block;height:100%;width:var(--xy-progress,0%);
  background:linear-gradient(90deg,var(--xy-cyan),var(--xy-gold));
  box-shadow:0 0 14px var(--xy-glow-cyan);
  transition:width .12s linear;
}

.xy-header__inner{
  width:min(var(--xy-max),100%);
  margin-inline:auto;
  padding:16px var(--xy-pad);
  display:flex;align-items:center;gap:clamp(14px,2.2vw,36px);
  min-height:var(--xy-header-h);
}

/* brand */
.xy-brand{
  display:inline-flex;align-items:center;gap:12px;
  text-decoration:none;color:inherit;flex:none;
}
.xy-brand__mark{
  position:relative;width:34px;height:34px;flex:none;
  display:grid;place-items:center;
}
.xy-brand__mark::before{
  content:"";position:absolute;inset:-2px;
  border:1px solid rgba(59,240,208,.55);
  border-radius:50%;
  transform:rotate(-20deg) scaleY(.58);
}
.xy-brand__mark::after{
  content:"";position:absolute;inset:8px;border-radius:50%;
  background:radial-gradient(circle at 32% 28%,var(--xy-white),var(--xy-cyan) 52%,rgba(59,240,208,.12) 74%);
  box-shadow:0 0 16px var(--xy-glow-cyan);
}
.xy-brand__text{display:flex;flex-direction:column;gap:2px}
.xy-brand__name{
  font-family:var(--xy-font-display);font-weight:800;
  font-size:1.06rem;letter-spacing:.12em;line-height:1.1;
  color:var(--xy-white);
}
.xy-brand__meta{
  font-family:var(--xy-font-mono);font-size:.6rem;
  letter-spacing:.3em;color:rgba(168,181,214,.7);line-height:1.2;
}

/* nav */
.xy-nav{position:static}
.xy-nav__list{
  display:flex;align-items:center;gap:clamp(8px,1.5vw,26px);
  flex-wrap:nowrap;
}
.xy-nav__item{flex:none}
.xy-nav__link{
  position:relative;display:inline-block;
  padding:8px 2px;
  font-size:.92rem;letter-spacing:.06em;
  color:var(--xy-dust);text-decoration:none;
  transition:color .2s ease;
  white-space:nowrap;
}
.xy-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;
  background:var(--xy-cyan);
  box-shadow:0 0 10px var(--xy-glow-cyan);
  transform:scaleX(0);transform-origin:left center;
  transition:transform .22s ease;
}
.xy-nav__link:hover,.xy-nav__link:focus-visible{color:var(--xy-white)}
.xy-nav__link:hover::after,.xy-nav__link:focus-visible::after{transform:scaleX(1)}
.xy-nav__link[aria-current="page"]{color:var(--xy-white)}
.xy-nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--xy-gold);box-shadow:0 0 10px rgba(255,200,107,.5)}

.xy-header__actions{
  margin-left:auto;display:flex;align-items:center;gap:12px;flex:none;
}

/* nav toggle */
.xy-nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;flex:none;
  border:1px solid var(--xy-line-strong);
  background:rgba(17,22,51,.6);
  cursor:pointer;
  clip-path:polygon(8px 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%,0 8px);
  transition:border-color .2s ease,background .2s ease;
}
.xy-nav-toggle:hover{border-color:var(--xy-cyan);background:rgba(27,34,71,.9)}
.xy-nav-toggle__bars{
  position:relative;display:block;width:18px;height:2px;
  background:var(--xy-white);
  transition:background .2s ease;
}
.xy-nav-toggle__bars::before,
.xy-nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:18px;height:2px;
  background:var(--xy-white);
  transition:transform .24s ease;
}
.xy-nav-toggle__bars::before{top:-6px}
.xy-nav-toggle__bars::after{top:6px}
.xy-header[data-open] .xy-nav-toggle__bars{background:transparent}
.xy-header[data-open] .xy-nav-toggle__bars::before{transform:translateY(6px) rotate(45deg);background:var(--xy-cyan)}
.xy-header[data-open] .xy-nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg);background:var(--xy-cyan)}

/* ---------- layout utilities ---------- */
.xy-main{padding-block-start:var(--xy-header-h)}
.xy-main--overlay{padding-block-start:0}
.xy-container{
  width:min(var(--xy-max),100%);
  margin-inline:auto;
  padding-inline:var(--xy-pad);
}
.xy-container--narrow{max-width:860px}
.xy-section{padding-block:clamp(44px,6.5vw,92px)}
.xy-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;gap:14px 28px;margin-bottom:clamp(22px,3vw,40px)}
.xy-eyebrow{
  display:inline-flex;align-items:center;gap:.7em;
  font-family:var(--xy-font-mono);font-size:.75rem;
  letter-spacing:.24em;text-transform:uppercase;
  color:var(--xy-cyan);
}
.xy-eyebrow::before{
  content:"";width:26px;height:1px;background:var(--xy-cyan);
  box-shadow:0 0 8px var(--xy-glow-cyan);
}
.xy-display{
  font-family:var(--xy-font-display);font-weight:800;
  font-size:clamp(2.6rem,6vw,5.4rem);
  letter-spacing:.04em;line-height:1.04;
  color:var(--xy-white);
  text-shadow:0 0 38px rgba(59,240,208,.26);
}
.xy-h2{
  font-size:clamp(1.8rem,3.6vw,3rem);
  letter-spacing:.05em;color:var(--xy-white);
}
.xy-lede{
  font-size:clamp(1rem,1.1vw + .7rem,1.125rem);
  line-height:1.8;color:var(--xy-dust);max-width:62ch;
}
.xy-mono{
  font-family:var(--xy-font-mono);
  font-size:.8125rem;letter-spacing:.16em;
  color:var(--xy-dust);
}
.xy-link{
  color:var(--xy-cyan);text-decoration:none;
  border-bottom:1px solid rgba(59,240,208,.35);
  text-underline-offset:.28em;
  transition:border-color .2s ease,color .2s ease;
}
.xy-link:hover,.xy-link:focus-visible{border-bottom-color:var(--xy-cyan);color:#8CFBE9}

/* grid */
.xy-grid{
  display:grid;gap:clamp(16px,2vw,28px);
  grid-template-columns:repeat(12,minmax(0,1fr));
}
.xy-col-3{grid-column:span 3}
.xy-col-4{grid-column:span 4}
.xy-col-5{grid-column:span 5}
.xy-col-6{grid-column:span 6}
.xy-col-7{grid-column:span 7}
.xy-col-8{grid-column:span 8}
.xy-col-12{grid-column:span 12}
.xy-cards{
  display:grid;gap:clamp(14px,1.8vw,24px);
  grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
}
@media (max-width:960px){
  .xy-col-3,.xy-col-4,.xy-col-5,.xy-col-6,.xy-col-7,.xy-col-8{grid-column:span 12}
}

/* ---------- panels & cards ---------- */
.xy-panel{
  position:relative;
  padding:clamp(18px,2.2vw,28px);
  background:linear-gradient(158deg,var(--xy-nebula),rgba(27,34,71,.94));
  border:1px solid var(--xy-line);
  clip-path:polygon(var(--xy-cut) 0,100% 0,100% calc(100% - var(--xy-cut)),calc(100% - var(--xy-cut)) 100%,0 100%,0 var(--xy-cut));
}
.xy-panel--tight{padding:clamp(14px,1.6vw,20px)}
.xy-panel--cut-sm{--xy-cut:var(--xy-cut-sm)}

.xy-card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:clamp(18px,2vw,26px);
  background:linear-gradient(158deg,var(--xy-nebula),rgba(27,34,71,.92));
  border:1px solid var(--xy-line);
  clip-path:polygon(var(--xy-cut) 0,100% 0,100% calc(100% - var(--xy-cut)),calc(100% - var(--xy-cut)) 100%,0 100%,0 var(--xy-cut));
  transition:border-color .2s ease,transform .2s ease,background .2s ease;
}
.xy-card:hover{border-color:rgba(59,240,208,.45);transform:translateY(-2px)}
.xy-card__index{
  font-family:var(--xy-font-mono);font-size:.78rem;
  letter-spacing:.2em;text-transform:uppercase;color:var(--xy-cyan);
}
.xy-card__title{
  font-family:var(--xy-font-display);font-weight:700;
  font-size:clamp(1.05rem,1.6vw,1.4rem);
  letter-spacing:.04em;color:var(--xy-white);
}
.xy-card__text{
  font-size:.975rem;line-height:1.75;color:var(--xy-dust);margin:0;max-width:56ch;
}

/* ---------- buttons ---------- */
.xy-btn{
  --btn-bg:transparent;
  --btn-fg:var(--xy-white);
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.78em 1.35em;
  font-family:var(--xy-font-body);font-weight:600;
  font-size:.92rem;letter-spacing:.06em;line-height:1;
  color:var(--btn-fg);background:var(--btn-bg);
  border:1px solid var(--xy-line-strong);
  text-decoration:none;cursor:pointer;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:transform .18s ease,background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease;
}
.xy-btn:hover{transform:translateY(-1px);border-color:var(--xy-cyan);color:var(--xy-white)}
.xy-btn:active{transform:translateY(0)}
.xy-btn--gold{
  --btn-bg:var(--xy-gold);--btn-fg:#0A0E1E;
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(255,200,107,.35),0 14px 34px -22px rgba(255,200,107,.95);
}
.xy-btn--gold:hover{background:#FFD48C;color:#0A0E1E;box-shadow:0 0 0 1px rgba(255,200,107,.6),0 18px 38px -20px rgba(255,200,107,1)}
.xy-btn--ghost{
  --btn-bg:rgba(27,34,71,.55);--btn-fg:var(--xy-white);
  border-color:var(--xy-line-strong);
}
.xy-btn--ghost:hover{border-color:var(--xy-cyan);background:rgba(27,34,71,.9)}
.xy-btn--sm{padding:.62em 1.05em;font-size:.82rem}
.xy-btn--block{display:flex;width:100%}

/* ---------- tags ---------- */
.xy-tag{
  display:inline-flex;align-items:center;gap:.45em;
  padding:.3em .7em;
  font-family:var(--xy-font-mono);font-size:.72rem;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--xy-dust);
  border:1px solid var(--xy-line-strong);
  background:rgba(17,22,51,.6);
  clip-path:polygon(6px 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%,0 6px);
}
.xy-tag--cyan{color:#06121B;background:var(--xy-cyan);border-color:transparent}
.xy-tag--magenta{color:var(--xy-magenta);border-color:rgba(255,79,163,.5);background:rgba(255,79,163,.1)}
.xy-tag--gold{color:var(--xy-gold);border-color:rgba(255,200,107,.5);background:rgba(255,200,107,.1)}
.xy-tag--green{color:var(--xy-green);border-color:rgba(98,230,167,.5);background:rgba(98,230,167,.1)}

/* ---------- breadcrumbs ---------- */
.xy-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.55em;
  margin-bottom:clamp(18px,2.4vw,30px);
  font-family:var(--xy-font-mono);font-size:.78rem;
  letter-spacing:.14em;color:rgba(168,181,214,.8);
}
.xy-crumbs__item{display:inline-flex;align-items:center;gap:.55em}
.xy-crumbs a{color:inherit;text-decoration:none;border-bottom:1px solid transparent;transition:color .2s ease,border-color .2s ease}
.xy-crumbs a:hover,.xy-crumbs a:focus-visible{color:var(--xy-cyan);border-bottom-color:var(--xy-cyan)}
.xy-crumbs__sep{color:rgba(168,181,214,.4)}

/* ---------- media (page-stage image containers) ---------- */
.xy-media{
  --xy-media-ratio:16/9;
  position:relative;overflow:hidden;
  background:linear-gradient(150deg,rgba(27,34,71,.92),rgba(11,15,34,.96));
  border:1px solid var(--xy-line);
  clip-path:polygon(var(--xy-cut) 0,100% 0,100% calc(100% - var(--xy-cut)),calc(100% - var(--xy-cut)) 100%,0 100%,0 var(--xy-cut));
}
.xy-media--wide{--xy-media-ratio:21/9}
.xy-media--portrait{--xy-media-ratio:3/4}
.xy-media--square{--xy-media-ratio:1/1}
.xy-media__img{
  width:100%;height:100%;object-fit:cover;
  aspect-ratio:var(--xy-media-ratio);
  filter:saturate(.85) contrast(1.05) brightness(.94);
}
.xy-media__placeholder{
  display:grid;place-items:center;
  aspect-ratio:var(--xy-media-ratio);
  padding:14px;text-align:center;
  font-family:var(--xy-font-mono);font-size:.72rem;letter-spacing:.22em;
  color:rgba(168,181,214,.55);
  background-image:
    radial-gradient(1px 1px at 22% 32%,rgba(244,247,255,.5),transparent),
    radial-gradient(1px 1px at 68% 18%,rgba(59,240,208,.55),transparent),
    radial-gradient(1px 1px at 44% 74%,rgba(244,247,255,.35),transparent),
    radial-gradient(1px 1px at 84% 62%,rgba(139,123,255,.6),transparent);
}
.xy-media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:.7rem .95rem;
  font-family:var(--xy-font-mono);font-size:.7rem;letter-spacing:.14em;
  color:var(--xy-dust);
  background:linear-gradient(0deg,rgba(7,10,24,.9),rgba(7,10,24,0));
}

/* ---------- decorative slash ---------- */
.xy-slash{
  position:absolute;left:-5%;right:-5%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(59,240,208,.55),rgba(255,79,163,.35),transparent);
  transform:rotate(-12deg);transform-origin:left center;
  pointer-events:none;
}

/* ---------- toc / scroll spy ---------- */
.xy-toc{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--xy-line);padding-left:0}
.xy-toc__link{
  display:block;padding:.5em 0 .5em 14px;
  font-family:var(--xy-font-mono);font-size:.78rem;letter-spacing:.12em;
  color:var(--xy-dust);text-decoration:none;
  border-left:2px solid transparent;margin-left:-1px;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.xy-toc__link:hover{color:var(--xy-white)}
.xy-toc__link[aria-current="true"]{
  color:var(--xy-white);
  border-left-color:var(--xy-cyan);
  background:linear-gradient(90deg,rgba(59,240,208,.1),transparent);
}

/* ---------- reveal ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- footer ---------- */
.xy-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,112px);
  padding-top:clamp(40px,6vw,76px);
  color:var(--xy-dust);
  background:linear-gradient(180deg,rgba(7,10,24,.15),#050813 62%);
  border-top:1px solid var(--xy-line);
}
.xy-footer__glow{
  position:absolute;left:-8%;right:-8%;bottom:-38%;height:380px;
  pointer-events:none;
  background:
    radial-gradient(58% 100% at 28% 100%,rgba(255,79,163,.18),transparent 72%),
    radial-gradient(52% 100% at 76% 100%,rgba(59,240,208,.14),transparent 72%);
}
.xy-footer__inner{
  position:relative;
  width:min(var(--xy-max),100%);
  margin-inline:auto;
  padding-inline:var(--xy-pad);
  display:grid;
  grid-template-columns:minmax(220px,1.05fr) minmax(0,2.4fr);
  gap:clamp(26px,4vw,64px);
}
.xy-footer__brand{display:flex;flex-direction:column;gap:16px}
.xy-footer__sig{display:flex;align-items:center;gap:12px}
.xy-footer__name{
  font-family:var(--xy-font-display);font-weight:800;
  font-size:1.5rem;letter-spacing:.1em;color:var(--xy-white);
}
.xy-footer__intro{font-size:.95rem;line-height:1.85;max-width:34ch;margin:0;color:var(--xy-dust)}
.xy-footer__docid{
  font-size:.72rem;letter-spacing:.24em;color:rgba(168,181,214,.55);
  border-top:1px solid var(--xy-line);padding-top:12px;max-width:22ch;
}
.xy-footer__grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,2.4vw,36px);
}
.xy-footer__col{display:flex;flex-direction:column;gap:12px;min-width:0}
.xy-footer__coltitle{
  font-family:var(--xy-font-mono);font-weight:500;
  font-size:.74rem;letter-spacing:.24em;text-transform:uppercase;
  color:var(--xy-cyan);
}
.xy-footer__links{display:flex;flex-direction:column;gap:8px}
.xy-footer__link{
  display:inline-block;
  font-size:.93rem;line-height:1.6;color:var(--xy-dust);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
  overflow-wrap:anywhere;
}
.xy-footer__link:hover,.xy-footer__link:focus-visible{color:var(--xy-white);border-bottom-color:var(--xy-cyan)}
.xy-footer__lines{display:flex;flex-direction:column;gap:7px}
.xy-footer__line{
  font-size:.86rem;line-height:1.7;color:var(--xy-dust);
  margin:0;overflow-wrap:anywhere;
}
.xy-footer__bar{
  position:relative;
  width:min(var(--xy-max),100%);
  margin:clamp(30px,4.5vw,56px) auto 0;
  padding:18px var(--xy-pad) calc(20px + env(safe-area-inset-bottom));
  border-top:1px solid var(--xy-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 26px;
}
.xy-footer__legal{
  margin:0;max-width:none;
  font-family:var(--xy-font-mono);font-size:.74rem;letter-spacing:.12em;
  color:rgba(168,181,214,.7);
}

/* ---------- responsive ---------- */
@media (max-width:1200px){
  .xy-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(20px,3vw,32px)}
}
@media (max-width:1080px){
  :root{--xy-pad:6vw}
  .xy-nav-toggle{display:inline-flex}
  .xy-nav{
    position:absolute;top:100%;left:0;right:0;
    padding:6px var(--xy-pad) 24px;
    background:rgba(7,10,24,.98);
    border-bottom:1px solid var(--xy-line);
    box-shadow:0 30px 60px -44px #000;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    max-height:calc(100vh - var(--xy-header-h) - 12px);
    overflow-y:auto;
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .xy-header[data-open] .xy-nav{opacity:1;visibility:visible;transform:translateY(0)}
  .xy-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .xy-nav__link{
    display:block;padding:15px 0;
    font-size:1rem;
    border-bottom:1px solid rgba(168,181,214,.1);
  }
  .xy-nav__link::after{display:none}
  .xy-nav__link[aria-current="page"]{color:var(--xy-cyan);padding-left:14px}
  .xy-nav__link[aria-current="page"]::before{
    content:"";position:absolute;left:0;top:50%;width:7px;height:7px;margin-top:-3.5px;
    background:var(--xy-cyan);border-radius:50%;
    box-shadow:0 0 10px var(--xy-glow-cyan);
  }
  .xy-footer__inner{grid-template-columns:1fr}
}
@media (max-width:900px){
  .xy-header__inner{padding-block:12px}
  .xy-section__head{gap:10px 18px}
}
@media (max-width:720px){
  .xy-header__actions .xy-btn{display:none}
}
@media (max-width:560px){
  :root{--xy-pad:20px;--xy-header-h:66px;--xy-cut:14px}
  body{background-attachment:scroll}
  .xy-brand__mark{width:30px;height:30px}
  .xy-brand__name{font-size:.98rem;letter-spacing:.08em}
  .xy-brand__meta{letter-spacing:.22em;font-size:.54rem}
  .xy-footer__grid{grid-template-columns:1fr}
  .xy-footer__bar{flex-direction:column;align-items:flex-start}
  .xy-display{text-shadow:0 0 24px rgba(59,240,208,.22)}
}

/* ---------- motion preference ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .xy-card:hover,.xy-btn:hover{transform:none}
}