:root{
  --by-ink:#071A14;
  --by-panel:#0B2B22;
  --by-moss:#1F5C4A;
  --by-cyan:#39F2D0;
  --by-cyan-soft:#A9FFF0;
  --by-orange:#FF8A3D;
  --by-amber:#FFC46B;
  --by-paper:#F3F7F2;
  --by-slate:#3F544D;
  --by-white:#FFFFFF;
  --by-line:rgba(57,242,208,.22);
  --by-line-soft:rgba(169,255,240,.12);
  --by-shadow:0 26px 60px -34px rgba(0,0,0,.9);
  --by-wrap:1280px;
  --by-gutter:clamp(16px,4vw,48px);
  --by-ease:cubic-bezier(.22,.72,.28,1);
  --by-font:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --by-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --by-display:"Barlow Condensed","Noto Sans SC","PingFang SC",system-ui,sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;
  min-height:100vh;
  font-family:var(--by-font);
  font-size:17px;
  line-height:1.75;
  color:var(--by-white);
  background-color:var(--by-ink);
  background-image:
    repeating-linear-gradient(118deg,rgba(255,255,255,.016) 0 1px,transparent 1px 5px),
    radial-gradient(1100px 620px at 84% -12%,rgba(57,242,208,.13),transparent 62%),
    radial-gradient(820px 520px at 4% 2%,rgba(255,138,61,.09),transparent 64%),
    radial-gradient(900px 700px at 50% 118%,rgba(31,92,74,.42),transparent 70%);
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em}
p{margin:0 0 1em}
a{color:var(--by-cyan);text-decoration-thickness:1px;text-underline-offset:3px}
ul,ol{margin:0 0 1em;padding-left:1.2em}
button{font:inherit;color:inherit}
:where(a,button,input,textarea,select,summary,[tabindex]):focus-visible{
  outline:2px solid var(--by-cyan);
  outline-offset:3px;
}
.by-paper :where(a,button,summary,[tabindex]):focus-visible{outline-color:#0F6B54}
.by-paper{background:var(--by-paper);color:var(--by-slate)}
.by-paper .by-h2,.by-paper .by-h3{color:#08201A}
.by-paper a{color:#0F6B54}

.by-wrap{
  width:100%;
  max-width:var(--by-wrap);
  margin-inline:auto;
  padding-inline:var(--by-gutter);
}

/* ---------- skip link ---------- */
.by-skip{
  position:absolute;
  left:14px;
  top:-72px;
  z-index:140;
  padding:10px 18px;
  background:var(--by-cyan);
  color:#04120D;
  font-weight:700;
  font-size:13px;
  letter-spacing:.04em;
  text-decoration:none;
  border-radius:2px;
  transition:top .24s var(--by-ease);
}
.by-skip:focus{top:12px}

/* ---------- header command bar ---------- */
.by-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,rgba(7,26,20,.97) 0%,rgba(11,43,34,.93) 100%);
  border-bottom:1px solid var(--by-line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.by-header__progress{
  position:absolute;
  top:0;
  left:0;
  height:2px;
  width:0;
  background:linear-gradient(90deg,var(--by-cyan),var(--by-orange));
  box-shadow:0 0 14px rgba(57,242,208,.65);
  transition:width .12s linear;
  pointer-events:none;
}
.by-header__bar{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.8vw,26px);
  width:100%;
  max-width:var(--by-wrap);
  margin-inline:auto;
  padding:9px var(--by-gutter);
  min-height:66px;
}

.by-brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}
.by-brand__mark{
  position:relative;
  width:32px;
  height:32px;
  flex:0 0 32px;
  background:linear-gradient(135deg,var(--by-cyan),var(--by-amber));
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.by-brand__mark::after{
  content:"";
  position:absolute;
  inset:7px;
  background:var(--by-ink);
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
}
.by-brand__text{display:flex;flex-direction:column;gap:2px;line-height:1.05}
.by-brand__name{font-size:17px;font-weight:800;letter-spacing:.05em;color:var(--by-white)}
.by-brand__tag{
  font-family:var(--by-mono);
  font-size:9.5px;
  letter-spacing:.16em;
  color:var(--by-cyan);
  text-transform:uppercase;
  white-space:nowrap;
}

.by-navtoggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  background:rgba(57,242,208,.06);
  border:1px solid var(--by-line);
  border-radius:2px;
  color:var(--by-cyan);
  font-size:13px;
  cursor:pointer;
  margin-left:auto;
}
.by-navtoggle__bars{position:relative;display:block;width:16px;height:10px}
.by-navtoggle__bars::before,
.by-navtoggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform .26s var(--by-ease),opacity .2s var(--by-ease);
}
.by-navtoggle__bars::before{top:0}
.by-navtoggle__bars::after{bottom:0}
.by-navtoggle__label{font-family:var(--by-mono);letter-spacing:.12em}
.by-navtoggle[aria-expanded="true"] .by-navtoggle__bars::before{transform:translateY(4px) rotate(45deg)}
.by-navtoggle[aria-expanded="true"] .by-navtoggle__bars::after{transform:translateY(-4px) rotate(-45deg)}

.by-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.by-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  margin:0;
  padding:0;
  list-style:none;
  flex-wrap:nowrap;
}
.by-nav__item{min-width:0}
.by-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 11px;
  color:rgba(255,255,255,.78);
  font-size:14px;
  font-weight:500;
  letter-spacing:.01em;
  text-decoration:none;
  white-space:nowrap;
  border-radius:2px;
  transition:color .2s var(--by-ease),background .2s var(--by-ease);
}
.by-nav__idx{
  font-family:var(--by-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:rgba(57,242,208,.55);
  transition:color .2s var(--by-ease);
}
.by-nav__label{display:inline}
.by-nav__link::after{
  content:"";
  position:absolute;
  left:11px;
  right:11px;
  bottom:2px;
  height:2px;
  background:var(--by-cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .3s var(--by-ease);
}
.by-nav__link:hover{color:var(--by-white);background:rgba(57,242,208,.08)}
.by-nav__link:hover::after{transform:scaleX(1)}
.by-nav__link[aria-current="page"]{color:var(--by-cyan);background:rgba(57,242,208,.09)}
.by-nav__link[aria-current="page"] .by-nav__idx{color:var(--by-orange)}
.by-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.by-header__cta{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 18px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.03em;
  color:#08180F;
  background:linear-gradient(135deg,var(--by-orange),var(--by-amber));
  text-decoration:none;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
  transition:filter .2s var(--by-ease),transform .2s var(--by-ease);
}
.by-header__cta:hover{filter:brightness(1.08)}
.by-header__cta:active{transform:translateY(1px)}
.by-header__cta:focus-visible{
  outline:none;
  box-shadow:inset 0 0 0 2px #04120D,inset 0 0 0 4px var(--by-cyan-soft);
}

/* ---------- footer archive ---------- */
.by-footer{
  position:relative;
  margin-top:clamp(48px,8vw,100px);
  padding-top:clamp(40px,6vw,72px);
  background-image:
    repeating-linear-gradient(118deg,rgba(255,255,255,.02) 0 1px,transparent 1px 6px),
    radial-gradient(820px 420px at 92% -6%,rgba(57,242,208,.11),transparent 66%),
    linear-gradient(180deg,#071A14 0%,#04120D 100%);
  border-top:1px solid var(--by-line);
  color:rgba(255,255,255,.82);
}
.by-footer__wrap{max-width:var(--by-wrap)}
.by-footer__grid{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,.85fr) minmax(0,1.25fr);
  gap:clamp(24px,3.4vw,48px);
  padding-bottom:clamp(28px,4vw,44px);
}
.by-footer__brandcol{min-width:0}
.by-footer__brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:inherit;
}
.by-footer__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  font-family:var(--by-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.04em;
  color:#071A14;
  background:linear-gradient(135deg,var(--by-cyan),var(--by-amber));
  clip-path:polygon(0 0,100% 0,100% 70%,70% 100%,0 100%);
}
.by-footer__name{font-size:18px;font-weight:800;letter-spacing:.05em;color:var(--by-white)}
.by-footer__note{
  margin:16px 0 18px;
  max-width:34ch;
  font-size:14px;
  line-height:1.85;
  color:rgba(255,255,255,.64);
}
.by-tags{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}
.by-tag{
  font-family:var(--by-mono);
  font-size:11px;
  letter-spacing:.07em;
  padding:4px 9px;
  color:var(--by-amber);
  border:1px dashed rgba(255,196,107,.45);
  background:rgba(255,196,107,.06);
  border-radius:2px;
}
.by-footer__group{min-width:0}
.by-footer__title{
  margin:0 0 14px;
  font-family:var(--by-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--by-cyan);
}
.by-footer__list{
  display:grid;
  gap:10px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:14px;
}
.by-footer__list a{
  display:inline-block;
  color:rgba(255,255,255,.74);
  text-decoration:none;
  transition:color .2s var(--by-ease),transform .2s var(--by-ease);
}
.by-footer__list a:hover{color:var(--by-cyan);transform:translateX(3px)}
.by-footer__contact{min-width:0}
.by-copy{
  position:relative;
  display:inline-flex;
  align-items:center;
  max-width:100%;
  padding:0 0 2px;
  margin:0;
  background:none;
  border:0;
  border-bottom:1px dashed rgba(57,242,208,.35);
  color:var(--by-white);
  font-family:var(--by-mono);
  font-size:13.5px;
  line-height:1.6;
  text-align:left;
  word-break:break-all;
  cursor:pointer;
  transition:color .2s var(--by-ease),border-color .2s var(--by-ease);
}
.by-copy:hover{color:var(--by-cyan);border-color:var(--by-cyan)}
.by-copy[data-copied]::after{
  content:"已复制";
  margin-left:8px;
  font-family:var(--by-font);
  font-size:11px;
  letter-spacing:.04em;
  color:#04120D;
  background:var(--by-cyan);
  border-radius:2px;
  padding:1px 6px;
}
.by-copy:focus-visible{outline-offset:4px}
.by-footer__addr{
  color:rgba(255,255,255,.66);
  font-size:13.5px;
  line-height:1.7;
}
.by-footer__hint{
  color:rgba(255,255,255,.42);
  font-size:12px;
  line-height:1.7;
}
.by-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  margin-top:clamp(26px,3.6vw,40px);
  padding:18px 0 26px;
  border-top:1px solid var(--by-line-soft);
  font-family:var(--by-mono);
  font-size:12.5px;
  letter-spacing:.03em;
  color:rgba(255,255,255,.52);
}
.by-footer__copy,.by-footer__icp{margin:0}
.by-footer__legallinks{
  display:flex;
  flex-wrap:wrap;
  gap:18px;
  margin:0 0 0 auto;
  padding:0;
  list-style:none;
  font-family:var(--by-font);
  font-size:13px;
}
.by-footer__legallinks a{
  color:rgba(255,255,255,.66);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--by-ease),border-color .2s var(--by-ease);
}
.by-footer__legallinks a:hover{color:var(--by-cyan);border-color:var(--by-cyan)}

/* ---------- buttons ---------- */
.by-btn{
  --btn-bg:linear-gradient(135deg,var(--by-orange),var(--by-amber));
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  color:#08180F;
  background:var(--btn-bg);
  border:0;
  border-radius:2px;
  text-decoration:none;
  cursor:pointer;
  clip-path:polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px);
  transition:filter .2s var(--by-ease),transform .2s var(--by-ease);
}
.by-btn:hover{filter:brightness(1.08)}
.by-btn:active{transform:translateY(1px)}
.by-btn:focus-visible{outline:none;box-shadow:inset 0 0 0 2px #04120D,inset 0 0 0 4px var(--by-cyan-soft)}
.by-btn--ghost{
  --btn-bg:transparent;
  color:var(--by-cyan);
  box-shadow:inset 0 0 0 1px var(--by-line);
}
.by-btn--ghost:hover{background:rgba(57,242,208,.1);filter:none}
.by-btn--solid{
  --btn-bg:linear-gradient(135deg,var(--by-cyan),var(--by-cyan-soft));
  color:#04120D;
}

/* ---------- breadcrumb ---------- */
.by-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  padding:0;
  list-style:none;
  font-family:var(--by-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.5);
}
.by-breadcrumb a{color:var(--by-cyan);text-decoration:none}
.by-breadcrumb a:hover{text-decoration:underline}
.by-breadcrumb__sep{color:rgba(57,242,208,.4)}
.by-breadcrumb--paper{color:rgba(63,84,77,.75)}
.by-breadcrumb--paper a{color:#0F6B54}

/* ---------- section basics ---------- */
.by-section{margin-block:clamp(40px,6vw,88px)}
.by-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin:0 0 14px;
  font-family:var(--by-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--by-cyan);
}
.by-eyebrow::before{
  content:"";
  width:18px;
  height:2px;
  background:linear-gradient(90deg,var(--by-cyan),transparent);
}
.by-h2{
  margin:0 0 12px;
  font-family:var(--by-display);
  font-weight:800;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1.14;
  letter-spacing:-.012em;
  color:var(--by-white);
}
.by-lead{
  margin:0;
  max-width:62ch;
  font-size:clamp(15px,1.35vw,17px);
  line-height:1.85;
  color:rgba(255,255,255,.72);
}
.by-paper .by-lead{color:var(--by-slate)}

/* ---------- grid utilities ---------- */
.by-grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.by-grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.by-grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.by-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.by-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* ---------- cut-corner panel ---------- */
.by-panel{
  position:relative;
  padding:clamp(20px,2.6vw,32px);
  background:linear-gradient(158deg,rgba(11,43,34,.97) 0%,rgba(7,26,20,.99) 100%);
  box-shadow:inset 0 0 0 1px var(--by-line-soft),var(--by-shadow);
  clip-path:polygon(0 0,calc(100% - 24px) 0,100% 24px,100% 100%,24px 100%,0 calc(100% - 24px));
}
.by-panel__index{
  position:absolute;
  top:14px;
  right:20px;
  font-family:var(--by-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:rgba(57,242,208,.6);
}
.by-panel__tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-bottom:10px;
  font-family:var(--by-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--by-amber);
}

/* ---------- media containers (page-stage image slots) ---------- */
.by-media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/10;
  overflow:hidden;
  border-radius:2px;
  isolation:isolate;
  background-color:var(--by-panel);
  background-image:
    radial-gradient(120% 92% at 18% -6%,rgba(57,242,208,.24),transparent 62%),
    linear-gradient(158deg,#1F5C4A 0%,#0B2B22 52%,#071A14 100%);
}
.by-media::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(57,242,208,.1) 0 1px,transparent 1px 36px),
    repeating-linear-gradient(0deg,rgba(57,242,208,.08) 0 1px,transparent 1px 36px);
  opacity:.75;
}
.by-media::after{
  content:"";
  position:absolute;
  left:-12%;
  right:-12%;
  bottom:-2%;
  height:56%;
  background:linear-gradient(180deg,transparent,rgba(255,138,61,.16));
  clip-path:polygon(0 100%,100% 0,100% 100%);
}
.by-media img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
  z-index:1;
}
.by-media--wide{aspect-ratio:21/9}
.by-media--tall{aspect-ratio:4/5}
.by-figure{display:grid;gap:10px;margin:0}
.by-figure__caption{
  font-family:var(--by-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:rgba(255,255,255,.5);
}
.by-paper .by-figure__caption{color:rgba(63,84,77,.8)}

/* ---------- data table base ---------- */
.by-data{width:100%;border-collapse:collapse;font-size:14px;line-height:1.5}
.by-data caption{
  caption-side:top;
  text-align:left;
  padding-bottom:10px;
  font-family:var(--by-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:rgba(57,242,208,.72);
}
.by-data th{
  padding:9px 10px;
  font-family:var(--by-mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.12em;
  text-transform:uppercase;
  text-align:left;
  color:rgba(57,242,208,.78);
  border-bottom:1px solid var(--by-line);
}
.by-data td{
  padding:11px 10px;
  border-bottom:1px solid var(--by-line-soft);
  color:rgba(255,255,255,.86);
  font-variant-numeric:tabular-nums;
}
.by-data tbody tr{transition:background .2s var(--by-ease)}
.by-data tbody tr:hover{background:rgba(57,242,208,.06)}
.by-data th.is-num,.by-data td.is-num{font-family:var(--by-mono);text-align:right}
.by-paper .by-data td{color:var(--by-slate);border-bottom-color:rgba(63,84,77,.18)}
.by-paper .by-data th{color:#0F6B54;border-bottom-color:rgba(63,84,77,.28)}

/* ---------- chips ---------- */
.by-chip{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  font-family:var(--by-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:rgba(255,255,255,.74);
  background:rgba(11,43,34,.7);
  border:1px solid var(--by-line-soft);
  border-radius:2px;
  cursor:pointer;
  transition:color .2s var(--by-ease),border-color .2s var(--by-ease),background .2s var(--by-ease);
}
.by-chip:hover{color:var(--by-cyan);border-color:var(--by-line)}
.by-chip[aria-pressed="true"],.by-chip.is-active{
  color:#04120D;
  background:linear-gradient(135deg,var(--by-cyan),var(--by-cyan-soft));
  border-color:transparent;
}

/* ---------- reveal ---------- */
.by-js .by-reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s var(--by-ease),transform .5s var(--by-ease);
}
.by-js .by-reveal.is-in{opacity:1;transform:none}

.by-visually-hidden{
  position:absolute;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- responsive ---------- */
@media (max-width:1080px) and (min-width:901px){
  .by-nav__idx{display:none}
  .by-nav__link{padding:8px 8px;font-size:13px}
  .by-brand__tag{display:none}
}

@media (max-width:900px){
  .by-header__bar{min-height:60px;gap:10px}
  .by-brand__tag{display:none}
  .by-navtoggle{display:inline-flex}
  .by-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:block;
    justify-content:flex-start;
    padding:10px var(--by-gutter) 20px;
    background:linear-gradient(180deg,#0B2B22 0%,#071A14 100%);
    border-bottom:1px solid var(--by-line);
    box-shadow:0 34px 54px -32px rgba(0,0,0,.95);
    max-height:0;
    opacity:0;
    visibility:hidden;
    overflow:hidden;
    transition:max-height .4s var(--by-ease),opacity .28s var(--by-ease),visibility .4s;
  }
  .by-nav[data-open]{
    max-height:74vh;
    opacity:1;
    visibility:visible;
    overflow:auto;
  }
  .by-nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%}
  .by-nav__item{width:100%}
  .by-nav__link{
    display:flex;
    width:100%;
    padding:15px 4px;
    font-size:16px;
    border-bottom:1px solid var(--by-line-soft);
    border-radius:0;
  }
  .by-nav__link::after{left:4px;right:auto;width:28px;bottom:7px}
  .by-nav__idx{font-size:10.5px}
  .by-header__cta{padding:9px 13px;font-size:12px}
  .by-footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .by-footer__brandcol{grid-column:1 / -1}
  .by-footer__legallinks{margin-left:0;width:100%}
}

@media (max-width:720px){
  body{font-size:16px;background-attachment:scroll,scroll,scroll,scroll}
  .by-grid--7-5,.by-grid--8-4,.by-grid--3,.by-grid--2{grid-template-columns:minmax(0,1fr)}
  .by-grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
  .by-header__cta{display:none}
  .by-navtoggle{margin-left:auto}
  .by-footer__grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .by-footer__brandcol{grid-column:auto}
  .by-footer__legal{flex-direction:column;align-items:flex-start;gap:8px}
  .by-panel{clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px))}
}

@media (max-width:420px){
  .by-brand__name{font-size:15px}
  .by-brand__mark{width:28px;height:28px;flex-basis:28px}
  .by-navtoggle__label{display:none}
  .by-navtoggle{padding:9px 11px}
}

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