/* ===== 01. Tokens ===== */
:root{
  --ink:#081726;
  --panel:#0F2438;
  --deep:#041019;
  --rock:#3B4654;
  --bone:#F4EBDD;
  --orange:#FF6B2C;
  --cyan:#2AD4E0;
  --gold:#E9B65B;
  --moss:#506B5A;
  --clay:#B66A4A;
  --line:rgba(244,235,221,.14);
  --line-soft:rgba(59,70,84,.55);
  --text-dim:rgba(244,235,221,.72);
  --shell:1180px;
  --pad:clamp(16px,4vw,32px);
  --serif:"Noto Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --cond:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC",sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --cut:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,0 100%);
  --cut-full:polygon(0 0,calc(100% - 16px) 0,100% 16px,100% 100%,16px 100%,0 calc(100% - 16px));
  --cut-sm:polygon(0 0,calc(100% - 9px) 0,100% 9px,100% 100%,9px 100%,0 calc(100% - 9px));
}

/* ===== 02. Reset & base ===== */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 520px at 88% -10%,rgba(42,212,224,.10),transparent 70%),
    radial-gradient(760px 420px at 0% 6%,rgba(255,107,44,.08),transparent 72%),
    repeating-linear-gradient(90deg,rgba(59,70,84,.26) 0 1px,transparent 1px 112px);
  color:var(--bone);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,picture,video{display:block;max-width:100%}
a{color:var(--cyan);text-decoration:none;text-underline-offset:3px}
a:hover{color:var(--orange)}
h1,h2,h3,h4{font-family:var(--cond);font-weight:700;line-height:1.25;letter-spacing:.01em;color:var(--bone);margin:0}
h1{font-size:clamp(30px,4.6vw,48px)}
h2{font-size:clamp(23px,3vw,32px)}
h3{font-size:clamp(18px,2.2vw,22px)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
dl,dt,dd,figure{margin:0}
button{font:inherit;color:inherit}
::selection{background:var(--orange);color:#08131f}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
#main-content{scroll-margin-top:140px}

/* ===== 03. Utilities ===== */
.av-wrap{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}
.av-mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.av-note{font-size:12.5px;line-height:1.7;color:rgba(244,235,221,.55);letter-spacing:.02em}
.av-lead{font-size:clamp(15.5px,1.6vw,18px);line-height:1.8;color:rgba(244,235,221,.86)}
.av-eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.28em;text-transform:uppercase;color:var(--cyan)}
.av-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.av-lock{overflow:hidden}
.av-skip{
  position:fixed;left:14px;top:-120px;z-index:200;
  padding:10px 18px;background:var(--orange);color:#08131f;
  font-weight:700;font-size:14px;letter-spacing:.08em;
  clip-path:var(--cut-sm);transition:top .2s ease;
}
.av-skip:focus{top:12px;color:#08131f}

/* ===== 04. Header ===== */
.av-header{
  position:sticky;top:0;z-index:80;
  background:rgba(8,23,38,.96);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.av-header[data-compact]{box-shadow:0 18px 42px rgba(4,16,25,.6)}

.av-progress{height:2px;background:rgba(59,70,84,.6)}
.av-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--orange),var(--gold) 45%,var(--cyan))}

.av-utility{background:var(--deep);border-bottom:1px solid rgba(59,70,84,.5)}
.av-utility__inner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-top:6px;padding-bottom:6px}
.av-status{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin:0;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--text-dim);text-transform:uppercase;
}
.av-status__dot{width:6px;height:6px;flex:none;background:var(--cyan);box-shadow:0 0 0 3px rgba(42,212,224,.18)}
.av-status__sep{color:var(--rock)}
.av-status b,.av-status strong{color:var(--bone)}

.av-drawer__trigger{
  display:inline-flex;align-items:center;gap:8px;flex:none;
  padding:5px 11px;background:rgba(15,36,56,.95);color:var(--bone);
  border:1px solid rgba(42,212,224,.42);
  font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.08em;
  cursor:pointer;clip-path:var(--cut-sm);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.av-drawer__trigger:hover,.av-drawer__trigger:focus-visible{background:var(--orange);border-color:var(--orange);color:#08131f}
.av-drawer__count{font-size:11px;color:var(--gold)}
.av-drawer__trigger:hover .av-drawer__count,.av-drawer__trigger:focus-visible .av-drawer__count{color:#08131f}

.av-masthead{
  display:flex;align-items:center;justify-content:center;
  gap:clamp(12px,3vw,30px);
  max-width:var(--shell);margin-inline:auto;
  padding:clamp(10px,1.7vw,18px) var(--pad);
  transition:padding .25s ease;
}
.av-masthead::before,.av-masthead::after{
  content:"";flex:1 1 0;height:1px;min-width:20px;
  background:linear-gradient(90deg,transparent,rgba(233,182,91,.55));
}
.av-masthead::after{background:linear-gradient(270deg,transparent,rgba(233,182,91,.55))}
.av-brand{display:flex;flex-direction:column;align-items:center;flex:none;text-align:center;color:var(--bone)}
.av-brand:hover{color:var(--bone)}
.av-brand__name{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(21px,3.2vw,30px);
  letter-spacing:.16em;text-indent:.16em;line-height:1.2;
  transition:font-size .25s ease,color .2s ease;
}
.av-brand:hover .av-brand__name{color:var(--gold)}
.av-brand__tag{
  margin-top:5px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.3em;text-indent:.3em;color:rgba(244,235,221,.5);
}
.av-header[data-compact] .av-masthead{padding-top:6px;padding-bottom:4px}
.av-header[data-compact] .av-brand__name{font-size:clamp(17px,2.2vw,21px)}
.av-header[data-compact] .av-brand__tag{display:none}

.av-navi{
  display:flex;align-items:center;justify-content:center;gap:12px;
  max-width:var(--shell);margin-inline:auto;
  padding:0 var(--pad) 8px;
}
.av-nav{flex:1 1 auto}
.av-nav__list{display:flex;flex-wrap:wrap;justify-content:center;gap:2px clamp(14px,2.4vw,30px)}
.av-nav__list a{
  position:relative;display:inline-block;padding:6px 2px;
  color:rgba(244,235,221,.76);font-size:14px;letter-spacing:.12em;
  transition:color .2s ease;
}
.av-nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left center;
  transition:transform .24s ease;
}
.av-nav__list a:hover{color:var(--cyan)}
.av-nav__list a:hover::after{transform:scaleX(1)}
.av-nav__list a[aria-current="page"]{color:var(--orange)}
.av-nav__list a[aria-current="page"]::after{background:var(--orange);transform:scaleX(1)}

.av-nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:6px 12px;background:rgba(15,36,56,.95);
  border:1px solid var(--line);color:var(--bone);
  font-size:12.5px;letter-spacing:.14em;cursor:pointer;
  clip-path:var(--cut-sm);
}
.av-nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.av-nav-toggle__bars{
  width:14px;height:10px;
  background-image:linear-gradient(var(--bone),var(--bone)),linear-gradient(var(--bone),var(--bone)),linear-gradient(var(--bone),var(--bone));
  background-size:100% 2px,100% 2px,100% 2px;
  background-position:0 0,0 4px,0 8px;
  background-repeat:no-repeat;
}

/* ===== 05. Drawer ===== */
.av-scrim{
  position:fixed;inset:0;z-index:110;
  background:rgba(4,16,25,.62);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}
.av-scrim[data-open]{opacity:1;pointer-events:auto}

.av-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:120;
  display:flex;flex-direction:column;
  width:min(400px,92vw);
  padding:20px 20px 24px;
  background:var(--panel);
  border-left:1px solid rgba(42,212,224,.28);
  box-shadow:-30px 0 60px rgba(4,16,25,.6);
  transform:translateX(102%);
  transition:transform .34s cubic-bezier(.2,.7,.3,1);
  overflow-y:auto;
}
.av-drawer[data-open]{transform:none}
.av-drawer__head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:12px}
.av-drawer__title{font-family:var(--cond);font-size:22px;letter-spacing:.08em;margin:0}
.av-drawer__close{
  width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);color:var(--bone);
  font-size:15px;line-height:1;cursor:pointer;clip-path:var(--cut-sm);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.av-drawer__close:hover,.av-drawer__close:focus-visible{background:var(--orange);color:#08131f;border-color:var(--orange)}
.av-drawer__lead{font-size:13px;line-height:1.7;color:var(--text-dim);margin-bottom:14px}
.av-drawer__list{display:grid;gap:8px}
.av-drawer__item a{
  display:grid;grid-template-columns:auto 1fr;grid-template-rows:auto auto;
  column-gap:12px;align-items:center;
  padding:11px 13px;color:var(--bone);
  background:rgba(8,23,38,.6);
  border:1px solid var(--line);border-left:2px solid rgba(233,182,91,.55);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.av-drawer__item a:hover,.av-drawer__item a:focus-visible{
  background:rgba(42,212,224,.1);border-left-color:var(--cyan);transform:translateX(2px);color:var(--bone);
}
.av-drawer__index{grid-row:1 / 3;align-self:center;font-family:var(--mono);font-size:12px;color:var(--gold);letter-spacing:.06em}
.av-drawer__label{font-family:var(--cond);font-size:16px;font-weight:700;letter-spacing:.05em}
.av-drawer__desc{font-size:12px;color:rgba(244,235,221,.6);letter-spacing:.03em}
.av-drawer__foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}

/* ===== 06. Footer ===== */
.av-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  background:var(--deep);
  border-top:1px solid rgba(233,182,91,.3);
  color:var(--bone);
}
.av-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:90px;pointer-events:none;
  background:repeating-linear-gradient(135deg,rgba(42,212,224,.06) 0 2px,transparent 2px 12px);
}
.av-footer__grid{
  position:relative;
  display:grid;grid-template-columns:1.25fr .85fr .95fr 1.25fr;
  gap:clamp(20px,3.4vw,40px);
  padding-top:clamp(32px,5vw,56px);padding-bottom:clamp(26px,4vw,44px);
}
.av-footer__brand{display:flex;flex-direction:column;gap:8px}
.av-footer__name{font-family:var(--serif);font-size:22px;font-weight:700;letter-spacing:.16em;text-indent:.16em;color:var(--bone)}
.av-footer__tag{font-size:12.5px;line-height:1.7;color:rgba(244,235,221,.6);letter-spacing:.04em}
.av-footer__stamp{
  align-self:flex-start;margin-top:4px;padding:3px 9px;
  font-size:11px;letter-spacing:.1em;color:var(--gold);
  border:1px solid rgba(233,182,91,.42);background:rgba(233,182,91,.08);
}
.av-footer__title{
  font-family:var(--cond);font-size:13px;font-weight:700;
  letter-spacing:.24em;color:var(--cyan);text-transform:uppercase;
  padding-bottom:10px;margin-bottom:12px;
  border-bottom:1px solid rgba(59,70,84,.7);
}
.av-footer__list{display:grid;gap:7px}
.av-footer__list a{
  display:inline-block;color:rgba(244,235,221,.76);
  font-size:13.5px;letter-spacing:.08em;
  transition:color .2s ease,transform .2s ease;
}
.av-footer__list a:hover,.av-footer__list a:focus-visible{color:var(--gold);transform:translateX(3px)}
.av-footer__col .av-note{margin-top:14px}
.av-footer__contact{display:grid;gap:2px}
.av-footer__contact dt{font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--moss);text-transform:uppercase;margin-top:9px}
.av-footer__contact dd{font-size:13.5px;color:rgba(244,235,221,.85);word-break:break-word}
.av-footer__col--contact .av-mono{color:var(--bone);font-size:13px}
.av-footer__base{border-top:1px solid rgba(59,70,84,.7);background:rgba(4,16,25,.7)}
.av-footer__base-inner{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-top:16px;padding-bottom:18px;
}
.av-footer__legal{font-size:12px;letter-spacing:.06em;color:rgba(244,235,221,.6)}
.av-footer__legal .av-mono{color:var(--gold)}
.av-footer__note{font-size:11.5px;color:rgba(244,235,221,.42);letter-spacing:.03em}

/* ===== 07. Back to top ===== */
.av-top{
  position:fixed;right:clamp(12px,3vw,26px);bottom:clamp(12px,3vw,26px);z-index:70;
  display:inline-flex;align-items:center;gap:6px;
  padding:9px 14px;background:var(--panel);color:var(--bone);
  border:1px solid rgba(42,212,224,.42);
  font-size:12px;letter-spacing:.12em;cursor:pointer;
  clip-path:var(--cut-sm);
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease,background .2s ease,color .2s ease;
}
.av-top[data-show]{opacity:1;transform:none;pointer-events:auto}
.av-top:hover,.av-top:focus-visible{background:var(--cyan);color:#041019;border-color:var(--cyan)}

/* ===== 08. Shared layout & components ===== */
.av-section{padding-block:clamp(30px,5vw,64px)}
.av-section__head{
  display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px;
  padding-bottom:14px;margin-bottom:clamp(18px,2.8vw,30px);
  border-bottom:1px solid var(--line);
}
.av-grid{display:grid;gap:clamp(14px,2.4vw,26px)}
.av-grid--split{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}
.av-grid--cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.av-panel{
  position:relative;
  padding:clamp(18px,2.6vw,28px);
  background:var(--panel);
  border:1px solid var(--line);
  clip-path:var(--cut-full);
}
.av-panel::before{
  content:"";position:absolute;left:0;top:0;width:52px;height:3px;background:var(--orange);
}
.av-panel--plain{clip-path:none;border-radius:0}
.av-panel__head{
  display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line);
}
.av-panel__title{font-family:var(--cond);font-size:clamp(19px,2.3vw,26px);font-weight:700;letter-spacing:.03em;line-height:1.2}
.av-panel__body{font-size:15px;color:var(--text-dim)}

.av-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.1em;cursor:pointer;
  clip-path:var(--cut-sm);
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.av-btn--primary{background:var(--orange);border-color:var(--orange);color:#08131f}
.av-btn--primary:hover,.av-btn--primary:focus-visible{background:var(--gold);border-color:var(--gold);color:#08131f;transform:translateY(-1px)}
.av-btn--ghost{background:transparent;border-color:rgba(42,212,224,.5);color:var(--bone)}
.av-btn--ghost:hover,.av-btn--ghost:focus-visible{background:rgba(42,212,224,.12);border-color:var(--cyan);color:var(--cyan)}

.av-crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding-block:14px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;
  color:rgba(244,235,221,.55);
}
.av-crumbs li{display:inline-flex;align-items:center;gap:8px}
.av-crumbs li + li::before{content:"/";color:var(--rock)}
.av-crumbs a{color:rgba(244,235,221,.7)}
.av-crumbs a:hover{color:var(--cyan)}
.av-crumbs [aria-current="page"]{color:var(--gold)}

.av-media{
  position:relative;overflow:hidden;
  aspect-ratio:16 / 9;
  background:linear-gradient(140deg,var(--panel),#0a1b2c 58%,rgba(80,107,90,.38));
  border:1px solid var(--line);
  clip-path:var(--cut);
}
.av-media--tall{aspect-ratio:4 / 5}
.av-media--square{aspect-ratio:1 / 1}
.av-media img,.av-media picture > img{width:100%;height:100%;object-fit:cover}
.av-media__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(42,212,224,.12) 0 1px,transparent 1px 40px),
    repeating-linear-gradient(0deg,rgba(42,212,224,.12) 0 1px,transparent 1px 40px);
}
.av-media__cap{
  position:absolute;left:0;bottom:0;
  padding:7px 12px;background:rgba(4,16,25,.72);
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--bone);
}

.av-rulelist{display:grid}
.av-rulelist__item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;
  padding:14px 0;border-top:1px solid var(--line);
}
.av-rulelist__item:last-child{border-bottom:1px solid var(--line)}
.av-rulelist__num{font-family:var(--mono);font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--gold);padding-top:3px}
.av-rulelist__title{font-family:var(--cond);font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--bone);margin-bottom:4px}
.av-rulelist__text{font-size:14.5px;line-height:1.7;color:var(--text-dim)}

.av-fold{
  margin-bottom:10px;
  background:rgba(15,36,56,.65);
  border:1px solid var(--line);
  clip-path:var(--cut);
}
.av-fold__q{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 18px;cursor:pointer;
  font-family:var(--cond);font-size:16.5px;font-weight:700;letter-spacing:.03em;color:var(--bone);
  list-style:none;
}
.av-fold__q::-webkit-details-marker{display:none}
.av-fold__q::after{content:"+";font-family:var(--mono);font-size:16px;color:var(--cyan)}
.av-fold[open] .av-fold__q{color:var(--gold);border-bottom:1px solid var(--line)}
.av-fold[open] .av-fold__q::after{content:"–";color:var(--gold)}
.av-fold__a{padding:14px 18px;font-size:14.5px;line-height:1.75;color:var(--text-dim)}

.av-timeline{position:relative;padding-left:26px}
.av-timeline::before{
  content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;
  background:linear-gradient(180deg,var(--cyan),rgba(233,182,91,.7),var(--rock));
}
.av-timeline__item{position:relative;padding-bottom:22px}
.av-timeline__item:last-child{padding-bottom:0}
.av-timeline__item::before{
  content:"";position:absolute;left:-24px;top:6px;width:9px;height:9px;
  background:var(--ink);border:2px solid var(--gold);transform:rotate(45deg);
}
.av-timeline__date{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;color:var(--gold)}
.av-timeline__title{font-family:var(--cond);font-size:17px;font-weight:700;margin-top:4px}
.av-timeline__text{font-size:14px;line-height:1.7;color:var(--text-dim);margin-top:4px}

.av-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:2px 8px;
  font-family:var(--mono);font-size:11px;letter-spacing:.1em;
  color:var(--bone);background:rgba(59,70,84,.5);border:1px solid rgba(244,235,221,.18);
}
.av-tag--gold{color:var(--gold);border-color:rgba(233,182,91,.45);background:rgba(233,182,91,.1)}
.av-tag--moss{color:#a8c4b0;border-color:rgba(80,107,90,.75);background:rgba(80,107,90,.25)}
.av-tag--clay{color:#e0a488;border-color:rgba(182,106,74,.6);background:rgba(182,106,74,.18)}
.av-tag--cyan{color:var(--cyan);border-color:rgba(42,212,224,.5);background:rgba(42,212,224,.1)}

.av-prose{font-size:15.5px;line-height:1.85;color:rgba(244,235,221,.86)}
.av-prose p{margin-bottom:1em}
.av-prose h2,.av-prose h3{margin:1.5em 0 .6em}
.av-prose a{text-decoration:underline}
.av-prose ul{padding-left:4px}
.av-prose ul li{position:relative;padding-left:18px;margin-bottom:.45em}
.av-prose ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--gold);transform:rotate(45deg);
}

.av-reveal{opacity:0;transform:translateY(9px);transition:opacity .45s ease,transform .45s ease}
.av-reveal.is-in{opacity:1;transform:none}

/* ===== 09. Responsive ===== */
@media (max-width:1000px){
  .av-footer__grid{grid-template-columns:1fr 1fr}
  .av-footer__brand{grid-column:1 / -1}
}
@media (max-width:900px){
  .av-navi{flex-wrap:wrap;justify-content:space-between;padding-bottom:6px}
  .av-nav-toggle{display:inline-flex}
  .av-nav{display:none;flex:1 1 100%;order:3}
  .av-nav[data-open]{display:block;animation:avNavIn .22s ease both}
  .av-nav__list{flex-direction:column;align-items:stretch;gap:0;margin-top:6px;border-top:1px solid var(--line)}
  .av-nav__list li{border-bottom:1px solid rgba(59,70,84,.45)}
  .av-nav__list a{display:block;padding:12px 14px;font-size:15px}
  .av-nav__list a::after{display:none}
  .av-nav__list a[aria-current="page"]{
    background:rgba(255,107,44,.1);
    border-left:2px solid var(--orange);
    padding-left:18px;
  }
  .av-grid--split{grid-template-columns:1fr}
}
@keyframes avNavIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

@media (max-width:640px){
  .av-status{font-size:10px;letter-spacing:.05em;gap:6px}
  .av-status__sep{display:none}
  .av-masthead{gap:10px}
  .av-brand__tag{letter-spacing:.2em;text-indent:.2em;font-size:9.5px}
  .av-footer__grid{grid-template-columns:1fr}
  .av-footer__base-inner{flex-direction:column;align-items:flex-start}
  .av-drawer{padding:16px}
  .av-top{padding:8px 12px}
}

/* ===== 10. 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;
  }
  .av-reveal{opacity:1;transform:none}
  .av-top{transform:none}
}