*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse}
main{display:block}

:root{
  --void:#050B18;
  --nebula:#0B1730;
  --glass:rgba(18,34,65,.72);
  --glass-strong:rgba(12,23,44,.96);
  --silver:#E8EEF9;
  --soft:#C6D1E4;
  --ice:#6FD3FF;
  --aurora:#9A6BFF;
  --warn:#FF8A3D;
  --ok:#36E2B4;
  --muted:#8A97AD;
  --line:rgba(138,151,173,.2);
  --line-ice:rgba(111,211,255,.3);
  --shell:1320px;
  --gutter:clamp(16px,4vw,52px);
  --radius:2px;
  --font-display:'Source Han Sans SC','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-serif:'Source Han Serif SC','Noto Serif SC','Songti SC',serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','SFMono-Regular','Consolas','Courier New',monospace;
}

body{
  min-height:100vh;
  color:var(--silver);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.005em;
  background-color:var(--void);
  background-image:
    radial-gradient(1.4px 1.4px at 22% 18%,rgba(232,238,249,.5),transparent 100%),
    radial-gradient(1.1px 1.1px at 68% 36%,rgba(111,211,255,.45),transparent 100%),
    radial-gradient(1.2px 1.2px at 44% 74%,rgba(232,238,249,.32),transparent 100%),
    radial-gradient(1px 1px at 86% 84%,rgba(154,107,255,.42),transparent 100%),
    radial-gradient(820px 520px at 86% -8%,rgba(111,211,255,.13),transparent 64%),
    radial-gradient(720px 440px at 2% 4%,rgba(154,107,255,.11),transparent 66%);
  background-size:340px 320px,420px 300px,300px 380px,380px 360px,100% 100%,100% 100%;
  background-repeat:repeat,repeat,repeat,repeat,no-repeat,no-repeat;
}
body.nav-open{overflow:hidden}

:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--ice);
  outline-offset:3px;
  border-radius:var(--radius);
}
#main-content:focus-visible{outline:2px solid var(--ice);outline-offset:-2px}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.container{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.mono{font-family:var(--font-mono);font-size:.92em;letter-spacing:.01em}
.hairline{height:1px;border:0;background:var(--line)}

/* ---------- skip link ---------- */
.skip-link{
  position:absolute;left:12px;top:-72px;z-index:140;
  display:inline-flex;align-items:center;min-height:44px;
  padding:10px 18px;border-radius:var(--radius);
  background:var(--ice);color:#04101f;
  font-family:var(--font-display);font-size:14px;font-weight:800;letter-spacing:.02em;
  transition:top 160ms ease-out;
}
.skip-link:focus,.skip-link:focus-visible{top:12px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  color:var(--silver);
  background:rgba(5,11,24,.8);
  -webkit-backdrop-filter:blur(16px) saturate(135%);
  backdrop-filter:blur(16px) saturate(135%);
  border-bottom:1px solid rgba(138,151,173,.16);
}
.header-shell{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:74px;
}
.header-left{display:flex;align-items:center;min-width:0}
.header-right{display:flex;align-items:center;gap:clamp(10px,1.8vw,24px)}

.brand{
  display:inline-flex;align-items:center;gap:12px;
  min-height:44px;padding:4px 0;
}
.brand-mark{
  display:grid;place-items:center;
  width:38px;height:38px;flex:0 0 auto;
  border:1px solid var(--line-ice);border-radius:var(--radius);
  background:linear-gradient(145deg,rgba(111,211,255,.2),rgba(154,107,255,.14));
  box-shadow:inset 0 0 0 1px rgba(5,11,24,.55);
  color:var(--ice);
  font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.brand-name{
  font-family:var(--font-display);font-size:17px;font-weight:800;
  letter-spacing:-.01em;color:var(--silver);white-space:nowrap;
}
.brand-sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);white-space:nowrap;
}
.brand:hover .brand-name{color:#fff}
.brand:hover .brand-mark{border-color:var(--ice)}

.site-nav{display:flex;align-items:center}
.nav-list{display:flex;align-items:center;gap:clamp(0px,1vw,10px)}
.nav-item{display:flex}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:44px;padding:0 10px;
  font-size:14px;color:var(--muted);letter-spacing:.02em;
  transition:color 180ms ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:10px;right:10px;bottom:9px;height:2px;
  background:var(--ice);transform:scaleX(0);transform-origin:0 50%;
  transition:transform 200ms ease-out,background-color 200ms ease-out;
}
.nav-link:hover{color:var(--silver)}
.nav-link:hover::after{transform:scaleX(1);background:rgba(111,211,255,.55)}
.nav-link[aria-current="page"]{color:var(--silver);font-weight:600}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--aurora)}
.nav-link:focus-visible{color:var(--silver)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border:1px solid transparent;border-radius:var(--radius);
  font-family:var(--font-display);font-size:14px;font-weight:700;letter-spacing:.03em;
  transition:background-color 180ms ease-out,border-color 180ms ease-out,color 180ms ease-out;
}
.btn--ghost{color:var(--silver);border-color:rgba(111,211,255,.4);background:rgba(111,211,255,.07)}
.btn--ghost:hover{color:#fff;border-color:var(--ice);background:rgba(111,211,255,.16)}
.btn--primary{color:#04101f;background:var(--ice);border-color:var(--ice)}
.btn--primary:hover{background:#9AE2FF;border-color:#9AE2FF}
.btn--warn{color:var(--warn);border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.09)}
.btn--warn:hover{background:rgba(255,138,61,.2);border-color:var(--warn)}
.btn--quiet{color:var(--muted);border-color:var(--line);background:transparent}
.btn--quiet:hover{color:var(--silver);border-color:rgba(138,151,173,.45)}
.header-cta{flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  min-height:44px;min-width:44px;padding:0 10px;
  border:1px solid var(--line);border-radius:var(--radius);
  color:var(--muted);font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  transition:color 180ms ease-out,border-color 180ms ease-out;
}
.nav-toggle:hover{color:var(--silver);border-color:rgba(111,211,255,.45)}
.nav-toggle-bars{display:grid;gap:4px;width:18px;flex:0 0 auto}
.nav-toggle-bar{
  display:block;height:2px;width:18px;background:currentColor;
  transition:transform 200ms ease-out,opacity 160ms ease-out;
}
.nav-toggle-label{line-height:1}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(111,211,255,.1);overflow:hidden;pointer-events:none;
}
.scroll-progress-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--ice) 0%,var(--aurora) 68%,var(--warn) 100%);
  transition:transform 90ms linear;
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  color:var(--silver);
  background:linear-gradient(180deg,rgba(11,23,48,0) 0%,rgba(11,23,48,.94) 20%,#0B1730 100%);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(111,211,255,.65) 32%,rgba(154,107,255,.6) 68%,transparent);
}
.footer-shell{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.55fr);
  gap:clamp(28px,4vw,60px);
  padding-top:clamp(40px,6vw,76px);
  padding-bottom:clamp(20px,3vw,32px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;min-width:0}
.brand--footer .brand-mark{width:44px;height:44px;font-size:15px}
.brand--footer .brand-name{font-size:19px}
.brand--footer .brand-sub{color:rgba(138,151,173,.85)}
.footer-note{
  margin-top:16px;max-width:36ch;
  font-size:14px;line-height:1.8;color:var(--muted);
}
.footer-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.footer-tags li{display:flex}

.status-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,34,65,.5);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--muted);
  white-space:nowrap;
}
.status-tag--ice{color:var(--ice);border-color:rgba(111,211,255,.42);background:rgba(111,211,255,.09)}
.status-tag--aurora{color:#C7ACFF;border-color:rgba(154,107,255,.46);background:rgba(154,107,255,.12)}
.status-tag--warn{color:var(--warn);border-color:rgba(255,138,61,.46);background:rgba(255,138,61,.1)}
.status-tag--success{color:var(--ok);border-color:rgba(54,226,180,.46);background:rgba(54,226,180,.1)}

.footer-grid{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(14px,3vw,32px);
}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--aurora);
}
.footer-list{display:grid;gap:0}
.footer-link{
  position:relative;display:inline-flex;align-items:center;
  min-height:40px;padding-left:0;
  font-size:14px;color:var(--muted);
  transition:color 170ms ease-out,padding-left 170ms ease-out;
}
.footer-link::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:0;background:var(--ice);transform:translateY(-50%);
  transition:height 170ms ease-out;
}
.footer-link:hover,.footer-link:focus-visible{color:var(--silver);padding-left:12px}
.footer-link:hover::before,.footer-link:focus-visible::before{height:15px}

.footer-contact{
  grid-column:1 / -1;
  display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:18px 28px;
  margin-top:clamp(10px,2vw,20px);padding-top:clamp(20px,3vw,32px);
  border-top:1px solid rgba(138,151,173,.18);
}
.contact-item{display:flex;flex-direction:column;gap:4px;min-width:0}
.contact-label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:rgba(138,151,173,.9);
}
.contact-value{font-size:14px;color:var(--silver);word-break:break-word;line-height:1.6}
.contact-value--mono{font-family:var(--font-mono);letter-spacing:.02em}
.contact-note{
  grid-column:1 / -1;max-width:66ch;
  font-size:13px;line-height:1.75;color:var(--muted);
}
.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;padding-block:20px;
  border-top:1px solid rgba(138,151,173,.16);
  font-size:12px;color:var(--muted);
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;font-family:var(--font-mono);letter-spacing:.03em}

/* ---------- page shell ---------- */
.page-main{position:relative;display:block}
.page-head{padding-block:clamp(26px,4.5vw,58px) clamp(14px,2.4vw,28px)}
.section{padding-block:clamp(30px,5vw,72px)}
.section--tight{padding-block:clamp(20px,3vw,38px)}

.display-title{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(38px,7vw,88px);line-height:.98;letter-spacing:-.03em;
  color:var(--silver);text-wrap:balance;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--aurora);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.section-head{display:grid;gap:10px;max-width:60ch;margin-bottom:clamp(18px,3vw,34px)}
.section-title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(23px,3.3vw,40px);line-height:1.16;letter-spacing:-.02em;
  color:var(--silver);
}
.section-lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:64ch}
.lede{
  font-family:var(--font-serif);font-weight:600;
  font-size:clamp(17px,2vw,21px);line-height:1.7;color:var(--soft);
  max-width:52ch;text-wrap:pretty;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
}

.prose{max-width:68ch;font-size:16px;line-height:1.85;color:var(--soft)}
.prose > * + *{margin-top:1em}
.prose h2,.prose h3{
  font-family:var(--font-display);color:var(--silver);
  letter-spacing:-.015em;line-height:1.28;
}
.prose h2{font-size:clamp(21px,2.4vw,28px);font-weight:800}
.prose h3{font-size:19px;font-weight:700}
.prose strong{color:var(--silver);font-weight:700}
.prose a{
  color:var(--ice);text-decoration:underline;
  text-underline-offset:3px;text-decoration-thickness:1px;
}
.prose ul,.prose ol{margin-block:.9em;padding-left:1.25em}
.prose ul li{position:relative;list-style:none}
.prose ul li::before{
  content:"";position:absolute;left:-1.1em;top:.78em;
  width:7px;height:2px;background:var(--ice);
}
.prose ol li{list-style:decimal}
.prose code{
  font-family:var(--font-mono);font-size:.9em;
  padding:1px 5px;border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,34,65,.7);color:var(--ice);
}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{padding-block:18px 0}
.breadcrumbs-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
}
.breadcrumbs-item{display:inline-flex;align-items:center;gap:6px}
.breadcrumbs-item + .breadcrumbs-item::before{content:"/";color:rgba(138,151,173,.5)}
.breadcrumbs-link{
  display:inline-flex;align-items:center;min-height:32px;
  color:var(--muted);transition:color 160ms ease-out;
}
.breadcrumbs-link:hover{color:var(--ice)}
.breadcrumbs-current{color:var(--silver)}

/* ---------- panels & boards ---------- */
.panel{
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,34,65,.72);
  padding:clamp(18px,3vw,28px);
}
.panel--glass{
  background:rgba(18,34,65,.55);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.panel--solid{background:var(--nebula)}
.board{
  display:grid;gap:10px;
  border:1px solid rgba(138,151,173,.22);
  border-left:2px solid var(--ice);border-radius:var(--radius);
  background:rgba(18,34,65,.6);
  padding:clamp(16px,2.4vw,26px);
}
.board-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px}
.board-index{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:var(--aurora);
}
.board-title{font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--silver)}
.board-body{font-size:15px;line-height:1.8;color:var(--muted);max-width:66ch}

/* ---------- theme band ---------- */
.theme-band{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:clamp(14px,2.6vw,32px);align-items:start;
  padding-block:clamp(16px,2.4vw,24px);
  border-bottom:1px solid rgba(138,151,173,.18);
  transition:background-color 180ms ease-out;
}
.theme-band:hover{background:rgba(18,34,65,.42)}
.theme-band-index{
  font-family:var(--font-mono);font-weight:600;line-height:1;
  font-size:clamp(20px,3vw,32px);letter-spacing:.02em;
  color:rgba(154,107,255,.9);
}
.theme-band-body{display:grid;gap:6px;min-width:0}
.theme-band-title{
  font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--silver);
}
.theme-band-text{font-size:14px;line-height:1.78;color:var(--muted);max-width:64ch}

/* ---------- grids ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

/* ---------- rail layout & toc ---------- */
.rail-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:clamp(22px,4vw,48px)}
.rail{min-width:0}
.toc{
  border:1px solid var(--line);border-radius:var(--radius);
  background:rgba(18,34,65,.62);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  padding:18px 16px;
}
.toc-title{
  margin-bottom:12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);
}
.toc-list{display:grid;gap:0}
.toc-link{
  position:relative;display:flex;align-items:center;
  min-height:38px;padding:4px 4px 4px 14px;
  font-size:14px;color:var(--muted);line-height:1.5;
  transition:color 160ms ease-out;
}
.toc-link::before{
  content:"";position:absolute;left:0;top:50%;
  width:2px;height:0;background:var(--aurora);transform:translateY(-50%);
  transition:height 180ms ease-out;
}
.toc-link:hover{color:var(--silver)}
.toc-link[aria-current="true"]{color:var(--silver);font-weight:600}
.toc-link[aria-current="true"]::before{height:18px}

/* ---------- media ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  border:1px solid rgba(138,151,173,.22);border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 18% 8%,rgba(154,107,255,.28),transparent 62%),
    radial-gradient(110% 100% at 86% 92%,rgba(111,211,255,.24),transparent 64%),
    #060E1E;
}
.media-frame > img,.media-frame > video,.media-frame > picture > img{
  width:100%;height:100%;object-fit:cover;display:block;
}
.media-frame--21x9{aspect-ratio:21/9}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--3x4{aspect-ratio:3/4}
.media-frame--veil::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,11,24,0) 48%,rgba(5,11,24,.62) 100%);
}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;color:var(--muted);
}

/* ---------- to top ---------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:calc(20px + env(safe-area-inset-bottom));
  z-index:80;display:inline-flex;align-items:center;gap:8px;
  min-height:44px;padding:0 14px;border-radius:var(--radius);
  border:1px solid rgba(111,211,255,.4);
  background:rgba(11,23,48,.9);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  color:var(--ice);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 200ms ease-out,transform 200ms ease-out,visibility 200ms linear,background-color 180ms ease-out;
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:rgba(111,211,255,.18)}

/* ---------- reveal ---------- */
.reveal-ready [data-reveal]{opacity:0;transform:translateY(14px)}
.reveal-ready [data-reveal].is-visible{
  opacity:1;transform:none;
  transition:opacity 260ms ease-out,transform 260ms ease-out;
}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-link{padding:0 8px;font-size:13.5px}
  .nav-link::after{left:8px;right:8px}
}
@media (min-width:1000px){
  .rail-layout{grid-template-columns:280px minmax(0,1fr);align-items:start}
  .rail{position:sticky;top:96px}
}
@media (max-width:900px){
  html{scroll-padding-top:84px}
  .header-shell{min-height:64px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;left:0;right:0;bottom:0;z-index:3;
    max-height:min(74vh,540px);overflow-y:auto;
    padding:18px var(--gutter) calc(26px + env(safe-area-inset-bottom));
    background:var(--glass-strong);
    -webkit-backdrop-filter:blur(18px) saturate(130%);
    backdrop-filter:blur(18px) saturate(130%);
    border-top:1px solid rgba(111,211,255,.3);
    box-shadow:0 -18px 48px rgba(0,0,0,.45);
    transform:translateY(112%);visibility:hidden;
    transition:transform 240ms ease-out,visibility 240ms linear;
  }
  .site-header[data-open] .site-nav{transform:translateY(0);visibility:visible}
  .header-shell{position:relative;z-index:2}
  .site-header[data-open]::after{
    content:"";position:fixed;inset:0;z-index:1;
    background:rgba(5,11,24,.64);
  }
  .site-header[data-open] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .site-header[data-open] .nav-toggle-bar:nth-child(2){opacity:0}
  .site-header[data-open] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-item + .nav-item{border-top:1px solid rgba(138,151,173,.14)}
  .nav-link{min-height:52px;padding:14px 4px;font-size:17px;color:var(--silver)}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--ice)}
  .nav-link[aria-current="page"]::before{
    content:"";display:inline-block;width:18px;height:2px;
    margin-right:10px;background:var(--aurora);
  }
  .footer-shell{grid-template-columns:minmax(0,1fr)}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-base{flex-direction:column;align-items:flex-start}
}
@media (max-width:600px){
  .brand-sub{display:none}
  .brand-mark{width:34px;height:34px;font-size:12px}
  .header-cta{min-height:40px;padding:0 12px;font-size:13px;letter-spacing:.02em}
  .nav-toggle-label{display:none}
  .nav-toggle{padding:0 11px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .theme-band{grid-template-columns:minmax(0,1fr);gap:8px}
}

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