/* ==========================================================================
   亚星看台 · /assets/site.css
   共享外壳：刊头导航 / 页脚 / 章节骨架 / 数据组件
   ========================================================================== */

/* --- 1. Reset ---------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dt,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* --- 2. Tokens --------------------------------------------------------- */
:root{
  --yx-night:#0B241C;
  --yx-deep:#071A14;
  --yx-deepest:#05130E;
  --yx-panel:#12362B;
  --yx-panel-soft:#0E2C22;
  --yx-gold:#D8B36A;
  --yx-gold-soft:rgba(216,179,106,.42);
  --yx-gold-line:rgba(216,179,106,.20);
  --yx-paper:#F1E8D8;
  --yx-paper-bright:#FBF7EE;
  --yx-ink:#14201C;
  --yx-ink-soft:rgba(20,32,28,.66);
  --yx-cyan:#2BB0C6;
  --yx-ember:#E1542B;
  --yx-yellow:#F2C230;
  --yx-red:#D2263C;
  --yx-glass:rgba(241,232,216,.08);
  --yx-text:rgba(241,232,216,.88);
  --yx-text-dim:rgba(241,232,216,.56);
  --yx-pad:32px;
  --yx-radius:2px;
  --yx-font-display:"Barlow Condensed","Oswald","Arial Narrow",Impact,"Noto Sans SC","PingFang SC",sans-serif;
  --yx-font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --yx-font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --yx-header-h:150px;
}

/* --- 3. Base ----------------------------------------------------------- */
body{
  font-family:var(--yx-font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--yx-text);
  background:var(--yx-night);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--yx-gold);color:var(--yx-night)}
:focus-visible{outline:2px solid var(--yx-gold);outline-offset:2px;box-shadow:0 0 0 4px rgba(11,36,28,.6)}

/* --- 4. Layout --------------------------------------------------------- */
.yx-shell{width:100%;max-width:1280px;margin-inline:auto;padding-inline:var(--yx-pad)}
.yx-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px}
.yx-col-2{grid-column:span 2}
.yx-col-3{grid-column:span 3}
.yx-col-4{grid-column:span 4}
.yx-col-5{grid-column:span 5}
.yx-col-6{grid-column:span 6}
.yx-col-7{grid-column:span 7}
.yx-col-8{grid-column:span 8}
.yx-col-9{grid-column:span 9}
.yx-col-12{grid-column:span 12}

/* --- 5. Type & utilities ----------------------------------------------- */
.yx-display{
  font-family:var(--yx-font-display);
  font-weight:700;
  font-size:clamp(64px,12vw,148px);
  line-height:.86;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--yx-paper);
}
.yx-mono{
  font-family:var(--yx-font-mono);
  font-size:12px;
  line-height:1.6;
  letter-spacing:.04em;
  color:var(--yx-text-dim);
}
.yx-lede{font-size:19px;line-height:1.7;max-width:34em;color:var(--yx-text)}
.yx-text-dim{color:var(--yx-text-dim)}
.yx-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--yx-gold);
}
.yx-eyebrow::before{content:"";width:24px;height:1px;background:currentColor}
.yx-rule{height:1px;background:var(--yx-gold-line);border:0;margin:0}
.yx-glass{background:var(--yx-glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid var(--yx-gold-line)}

/* --- 6. Buttons -------------------------------------------------------- */
.yx-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  font-size:14px;
  letter-spacing:.06em;
  line-height:1;
  border:1px solid transparent;
  border-radius:var(--yx-radius);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.yx-btn:hover{transform:translateY(-1px)}
.yx-btn--sm{padding:9px 14px;font-size:13px}
.yx-btn--gold{background:var(--yx-gold);color:var(--yx-night);border-color:var(--yx-gold)}
.yx-btn--gold:hover{background:var(--yx-paper-bright);border-color:var(--yx-paper-bright)}
.yx-btn--ghost{background:var(--yx-glass);color:var(--yx-paper);border-color:var(--yx-gold-soft)}
.yx-btn--ghost:hover{border-color:var(--yx-gold);color:var(--yx-gold)}
.yx-btn--ink{background:var(--yx-ink);color:var(--yx-paper);border-color:var(--yx-ink)}
.yx-btn--ink:hover{background:#22322C}

/* --- 7. Header --------------------------------------------------------- */
.yx-skip{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:120;
  padding:10px 16px;
  background:var(--yx-gold);
  color:var(--yx-night);
  font-size:14px;
  border-radius:var(--yx-radius);
  transition:top .18s ease;
}
.yx-skip:focus{top:12px}
.yx-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--yx-night);
  border-bottom:1px solid var(--yx-gold-line);
}
.yx-header::before{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--yx-gold)}
.yx-header.is-stuck{box-shadow:0 18px 40px rgba(0,0,0,.45)}
.yx-header__shell{position:relative;z-index:2}

.yx-masthead{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  padding:16px 0 10px;
}
.yx-masthead__aside{display:flex;flex-direction:column;gap:2px;min-width:0}
.yx-masthead__aside--end{align-items:flex-end;text-align:right}
.yx-masthead__code{
  font-family:var(--yx-font-display);
  font-weight:700;
  font-size:22px;
  line-height:1;
  letter-spacing:.06em;
  color:var(--yx-gold);
  font-variant-numeric:tabular-nums;
}
.yx-masthead__clock{min-width:5ch;text-align:right}
.yx-masthead__label{
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--yx-text-dim);
}
.yx-brand{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center}
.yx-brand__link{display:flex;flex-direction:column;align-items:center;gap:8px}
.yx-brand__mark{display:block;position:relative;width:24px;height:14px;flex:0 0 auto}
.yx-brand__mark::before,
.yx-brand__mark::after{content:"";position:absolute;left:0;height:3px;background:var(--yx-gold)}
.yx-brand__mark::before{top:0;width:24px}
.yx-brand__mark::after{bottom:0;width:14px}
.yx-brand__name{
  font-size:30px;
  font-weight:300;
  line-height:1.1;
  letter-spacing:.22em;
  text-indent:.22em;
  color:var(--yx-paper);
  transition:color .18s ease;
}
.yx-brand__link:hover .yx-brand__name{color:var(--yx-gold)}
.yx-brand__edition{
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--yx-text-dim);
}

.yx-navbar{position:relative;border-top:1px solid var(--yx-gold-line)}
.yx-navbar__shell{display:flex;align-items:center;gap:16px}
.yx-navbar__hint{
  display:none;
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--yx-text-dim);
}
.yx-nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:10px 14px;
  border:1px solid var(--yx-gold-soft);
  border-radius:var(--yx-radius);
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--yx-paper);
  transition:border-color .18s ease,color .18s ease;
}
.yx-nav-toggle:hover{border-color:var(--yx-gold);color:var(--yx-gold)}
.yx-nav-toggle__bars{
  display:block;
  width:16px;
  height:11px;
  position:relative;
  background:linear-gradient(currentColor,currentColor) center/100% 1px no-repeat;
}
.yx-nav-toggle__bars::before,
.yx-nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1px;
  background:currentColor;
  transition:transform .2s ease;
}
.yx-nav-toggle__bars::before{top:0}
.yx-nav-toggle__bars::after{bottom:0}
.yx-nav-toggle[aria-expanded="true"] .yx-nav-toggle__bars{background:none}
.yx-nav-toggle[aria-expanded="true"] .yx-nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.yx-nav-toggle[aria-expanded="true"] .yx-nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.yx-nav-toggle__text{white-space:nowrap}

.yx-nav{width:100%}
.yx-nav__list{display:flex;align-items:center}
.yx-nav__item{display:flex}
.yx-nav__link{
  position:relative;
  display:inline-block;
  padding:10px 14px;
  font-size:15px;
  letter-spacing:.06em;
  color:rgba(241,232,216,.72);
  transition:color .18s ease;
}
.yx-nav__link::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  background:var(--yx-gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}
.yx-nav__link:hover{color:var(--yx-paper)}
.yx-nav__link:hover::after{transform:scaleX(1)}
.yx-nav__link[aria-current="page"]{color:var(--yx-gold)}
.yx-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.yx-nav__actions{display:flex;gap:10px}

/* --- 8. Footer --------------------------------------------------------- */
.yx-footer{background:var(--yx-deep);border-top:1px solid var(--yx-gold-soft);color:var(--yx-text)}
.yx-footer__inner{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(0,2fr) minmax(0,1.2fr);
  gap:48px;
  padding-block:64px 48px;
}
.yx-footer__logo{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:26px;
  font-weight:300;
  letter-spacing:.2em;
  color:var(--yx-paper);
}
.yx-footer__logo .yx-brand__mark{width:20px;height:12px}
.yx-footer__logo .yx-brand__mark::before{width:20px}
.yx-footer__logo .yx-brand__mark::after{width:12px}
.yx-footer__tagline{margin-top:16px;font-size:15px;line-height:1.8;max-width:22em;color:rgba(241,232,216,.7)}
.yx-footer__mono{
  margin-top:14px;
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--yx-text-dim);
}
.yx-footer__columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.yx-footer__col-title{
  margin-bottom:14px;
  font-family:var(--yx-font-mono);
  font-size:11px;
  font-weight:400;
  letter-spacing:.2em;
  color:var(--yx-gold);
}
.yx-footer__list{display:flex;flex-direction:column;gap:10px}
.yx-footer__link{font-size:15px;color:rgba(241,232,216,.75);transition:color .16s ease}
.yx-footer__link:hover{color:var(--yx-gold)}
.yx-footer__contact-line,
.yx-footer__address,
.yx-footer__hours{
  font-family:var(--yx-font-mono);
  font-size:12px;
  line-height:1.9;
  letter-spacing:.02em;
  color:rgba(241,232,216,.68);
}
.yx-footer__address{margin-top:12px;max-width:26em}
.yx-footer__hours{margin-top:12px;color:var(--yx-text-dim)}
.yx-footer__legal{border-top:1px solid rgba(216,179,106,.14);background:var(--yx-deepest)}
.yx-footer__legal-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:18px;
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.04em;
}
.yx-footer__copy{color:var(--yx-text-dim)}
.yx-footer__icp{color:rgba(241,232,216,.5)}

/* --- 9. Breadcrumb ----------------------------------------------------- */
.yx-crumb{padding:18px 0}
.yx-crumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.04em;
}
.yx-crumb__item{display:flex;align-items:center;gap:8px;color:var(--yx-text-dim)}
.yx-crumb__link{color:var(--yx-text-dim);transition:color .16s ease}
.yx-crumb__link:hover{color:var(--yx-gold)}
.yx-crumb__sep{color:var(--yx-gold-soft)}
.yx-crumb__current{color:var(--yx-gold)}

/* --- 10. Sections & chapters ------------------------------------------- */
.yx-section{position:relative;padding-block:96px}
.yx-section--tight{padding-block:56px}
.yx-section--panel{background:var(--yx-panel)}
.yx-section--glass{
  background:var(--yx-glass);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-block:1px solid var(--yx-gold-line);
}
.yx-section--paper{background:var(--yx-paper);color:var(--yx-ink)}
.yx-section--paper .yx-mono,
.yx-section--paper .yx-text-dim{color:var(--yx-ink-soft)}
.yx-section--paper .yx-eyebrow{color:var(--yx-ember)}

.yx-chapter{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px 32px;align-items:start}
.yx-chapter__index{
  grid-column:span 2;
  font-family:var(--yx-font-display);
  font-weight:700;
  font-size:clamp(48px,6vw,72px);
  line-height:.9;
  letter-spacing:-.02em;
  color:var(--yx-gold);
  font-variant-numeric:tabular-nums;
}
.yx-chapter__body{grid-column:span 7}
.yx-chapter__aside{grid-column:span 3}
.yx-chapter__title{
  font-size:clamp(30px,4vw,54px);
  font-weight:300;
  line-height:1.16;
  letter-spacing:.02em;
  color:var(--yx-paper);
}
.yx-chapter__lede{
  margin-top:18px;
  font-size:19px;
  line-height:1.7;
  max-width:34em;
  color:rgba(241,232,216,.8);
}
.yx-section--paper .yx-chapter__index{color:var(--yx-ink);opacity:.22}
.yx-section--paper .yx-chapter__title{color:var(--yx-ink)}
.yx-section--paper .yx-chapter__lede{color:var(--yx-ink-soft)}

/* --- 11. Data components ----------------------------------------------- */
.yx-plate{
  display:flex;
  flex-direction:column;
  gap:6px;
  padding:14px 16px;
  background:var(--yx-glass);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border:1px solid var(--yx-gold-line);
}
.yx-plate__code{font-family:var(--yx-font-mono);font-size:11px;letter-spacing:.14em;color:var(--yx-gold)}
.yx-plate__title{font-size:15px;letter-spacing:.02em;color:var(--yx-paper)}
.yx-plate__meta{font-family:var(--yx-font-mono);font-size:11px;line-height:1.6;color:var(--yx-text-dim)}

.yx-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:24px;
  background:var(--yx-panel);
  border:1px solid var(--yx-gold-line);
}
.yx-card--glass{background:var(--yx-glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.yx-card--lift{margin-top:-28px}
.yx-card__head{
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--yx-text-dim);
}
.yx-card__value{
  font-family:var(--yx-font-display);
  font-weight:700;
  font-size:clamp(44px,7vw,88px);
  line-height:.9;
  letter-spacing:-.02em;
  color:var(--yx-paper);
  font-variant-numeric:tabular-nums;
}
.yx-card__foot{font-size:14px;line-height:1.7;color:var(--yx-text-dim)}
.yx-card--paper{background:var(--yx-paper-bright);color:var(--yx-ink);border-color:rgba(20,32,28,.14)}
.yx-card--paper .yx-card__value{color:var(--yx-ink)}
.yx-card--paper .yx-card__head,
.yx-card--paper .yx-card__foot{color:var(--yx-ink-soft)}

.yx-meter{--yx-hold:50%;display:flex;flex-direction:column;gap:8px}
.yx-meter__head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--yx-text-dim);
}
.yx-meter__value{color:var(--yx-paper);font-variant-numeric:tabular-nums}
.yx-meter__track{position:relative;height:10px;background:rgba(241,232,216,.12);overflow:hidden}
.yx-meter__fill{
  position:absolute;
  inset:0 auto 0 0;
  width:var(--yx-hold);
  background:linear-gradient(90deg,var(--yx-cyan),var(--yx-ember));
  transition:width .6s cubic-bezier(.22,.8,.3,1);
}
.yx-meter--thin .yx-meter__track{height:6px}

.yx-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:26px;
  height:18px;
  padding:0 6px;
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.04em;
  color:var(--yx-night);
}
.yx-badge--yellow{background:var(--yx-yellow)}
.yx-badge--red{background:var(--yx-red);color:var(--yx-paper-bright)}
.yx-badge--cyan{background:var(--yx-cyan)}
.yx-badge--ember{background:var(--yx-ember);color:var(--yx-paper-bright)}

.yx-track{
  display:flex;
  gap:16px;
  overflow-x:auto;
  padding-bottom:14px;
  scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.yx-track__item{flex:0 0 clamp(190px,24vw,250px);scroll-snap-align:start}
.yx-track::-webkit-scrollbar{height:4px}
.yx-track::-webkit-scrollbar-track{background:rgba(241,232,216,.08)}
.yx-track::-webkit-scrollbar-thumb{background:var(--yx-gold-soft)}

.yx-drawer{border-top:1px solid var(--yx-gold-line)}
.yx-drawer__trigger{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  padding:20px 4px;
  text-align:left;
  font-size:17px;
  letter-spacing:.02em;
  color:var(--yx-paper);
  transition:color .16s ease;
}
.yx-drawer__trigger:hover{color:var(--yx-gold)}
.yx-drawer__trigger::after{
  content:"+";
  font-family:var(--yx-font-mono);
  font-size:18px;
  color:var(--yx-gold);
  transition:transform .24s ease;
}
.yx-drawer[data-open] .yx-drawer__trigger::after{transform:rotate(45deg)}
.yx-drawer__panel{
  max-height:0;
  overflow:hidden;
  visibility:hidden;
  opacity:0;
  transition:max-height .24s ease,opacity .16s ease,visibility 0s linear .24s;
}
.yx-drawer[data-open] .yx-drawer__panel{
  max-height:1600px;
  visibility:visible;
  opacity:1;
  transition:max-height .24s ease,opacity .16s ease .08s,visibility 0s;
}
.yx-drawer__body{
  padding:4px 4px 26px;
  font-size:16px;
  line-height:1.8;
  max-width:34em;
  color:rgba(241,232,216,.78);
}

.yx-media{
  position:relative;
  overflow:hidden;
  background:var(--yx-panel-soft);
  border:1px solid var(--yx-gold-line);
}
.yx-media--wide{aspect-ratio:16/9}
.yx-media--tall{aspect-ratio:3/4}
.yx-media--square{aspect-ratio:1/1}
.yx-media__img{width:100%;height:100%;object-fit:cover}
.yx-media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(rgba(241,232,216,.10) 1px, transparent 1px),
    linear-gradient(180deg, rgba(11,36,28,.10) 0%, rgba(11,36,28,.62) 100%);
  background-size:3px 3px,100% 100%;
}
.yx-media__cap{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  padding:12px 14px;
  font-family:var(--yx-font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--yx-paper);
}

.yx-updatebar{
  position:sticky;
  top:var(--yx-header-h,150px);
  z-index:40;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 20px;
  padding:10px var(--yx-pad);
  background:rgba(11,36,28,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--yx-gold-line);
  font-family:var(--yx-font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--yx-text-dim);
}
.yx-updatebar__dot{
  display:inline-block;
  width:6px;
  height:6px;
  margin-right:8px;
  background:var(--yx-gold);
  vertical-align:middle;
  animation:yx-pulse 2.6s ease-in-out infinite;
}
@keyframes yx-pulse{0%,100%{opacity:1}50%{opacity:.26}}

/* --- 12. Overlays ------------------------------------------------------ */
.yx-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:2px;
  z-index:90;
  background:transparent;
  pointer-events:none;
}
.yx-progress__fill{
  display:block;
  width:100%;
  height:100%;
  background:var(--yx-gold);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .1s linear;
}
.yx-to-top{
  position:fixed;
  right:22px;
  bottom:22px;
  z-index:80;
  display:flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  background:var(--yx-night);
  border:1px solid var(--yx-gold-soft);
  border-radius:var(--yx-radius);
  color:var(--yx-gold);
  font-family:var(--yx-font-mono);
  font-size:16px;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,background-color .18s ease,color .18s ease,visibility 0s linear .2s;
}
.yx-to-top.is-visible{opacity:1;visibility:visible;transform:none;transition:opacity .2s ease,transform .2s ease,background-color .18s ease,color .18s ease}
.yx-to-top:hover{background:var(--yx-gold);color:var(--yx-night)}
.yx-reveal{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .5s ease,transform .5s cubic-bezier(.22,.8,.3,1);
}
.yx-reveal.is-in{opacity:1;transform:none}

/* --- 13. Responsive ---------------------------------------------------- */
@media (min-width:861px){
  .yx-navbar__hint,
  .yx-nav-toggle{display:none}
  .yx-nav{
    flex:1 1 auto;
    display:grid;
    grid-template-columns:1fr auto 1fr;
    align-items:center;
    gap:20px;
  }
  .yx-nav__list{grid-column:2;justify-content:center;gap:2px}
  .yx-nav__actions{grid-column:3;justify-self:end}
}

@media (max-width:1024px){
  :root{--yx-pad:24px}
  .yx-section{padding-block:76px}
  .yx-footer__inner{grid-template-columns:1fr 1fr;gap:40px 32px;padding-block:48px 40px}
  .yx-footer__brand{grid-column:1 / -1}
}

@media (max-width:860px){
  .yx-masthead{padding:12px 0 10px;gap:10px}
  .yx-brand__name{font-size:24px;letter-spacing:.18em;text-indent:.18em}
  .yx-brand__edition{display:none}
  .yx-brand__link{gap:6px}
  .yx-brand__mark{width:20px;height:12px}
  .yx-brand__mark::before{width:20px}
  .yx-brand__mark::after{width:12px}
  .yx-masthead__code{font-size:17px}
  .yx-masthead__label{font-size:10px;letter-spacing:.14em}

  .yx-navbar__shell{justify-content:space-between;padding-block:8px}
  .yx-navbar__hint{display:block}
  .yx-nav-toggle{display:inline-flex}
  .yx-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    width:auto;
    background:var(--yx-night);
    border-bottom:1px solid var(--yx-gold-soft);
    box-shadow:0 26px 44px rgba(0,0,0,.5);
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    transition:max-height .24s ease,visibility 0s linear .24s;
  }
  .yx-nav[data-open]{
    max-height:min(520px,calc(100vh - var(--yx-header-h,150px)));
    overflow-y:auto;
    visibility:visible;
    transition:max-height .28s ease,visibility 0s;
  }
  .yx-nav__list{flex-direction:column;align-items:stretch;padding:6px var(--yx-pad)}
  .yx-nav__link{display:block;padding:14px 0;font-size:16px;border-bottom:1px solid var(--yx-gold-line)}
  .yx-nav__link::after{display:none}
  .yx-nav__link[aria-current="page"]{padding-left:16px}
  .yx-nav__link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:6px;
    height:6px;
    margin-top:-3px;
    background:var(--yx-gold);
  }
  .yx-nav__actions{flex-direction:column;align-items:stretch;padding:14px var(--yx-pad) 24px}
  .yx-nav__actions .yx-btn{width:100%;padding:12px 16px}

  .yx-chapter__index{grid-column:span 12;font-size:clamp(40px,13vw,64px)}
  .yx-chapter__body{grid-column:span 12}
  .yx-chapter__aside{grid-column:span 12}
  .yx-card--lift{margin-top:0}
  .yx-section{padding-block:60px}
  .yx-section--tight{padding-block:40px}
  .yx-col-2,.yx-col-3,.yx-col-4,.yx-col-5,.yx-col-6,.yx-col-7,.yx-col-8,.yx-col-9{grid-column:span 12}
  .yx-grid{gap:18px}
  .yx-footer__columns{grid-template-columns:1fr 1fr}
  .yx-footer__legal-inner{justify-content:flex-start}
  .yx-to-top{right:16px;bottom:16px;width:42px;height:42px}
}

@media (max-width:560px){
  :root{--yx-pad:18px}
  body{font-size:16px;line-height:1.7}
  .yx-lede,.yx-chapter__lede{font-size:17px}
  .yx-footer__inner{grid-template-columns:1fr;gap:34px;padding-block:40px 32px}
  .yx-footer__brand{grid-column:auto}
  .yx-footer__columns{grid-template-columns:1fr;gap:26px}
  .yx-footer__logo{font-size:22px}
  .yx-card{padding:18px}
  .yx-track__item{flex-basis:76%}
}

/* --- 14. Reduced motion ------------------------------------------------ */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .yx-reveal{opacity:1;transform:none}
  .yx-progress__fill{transition:none}
  .yx-to-top{transition:none}
}