:root{
  --ink:#082A24;
  --ink-deep:#051C17;
  --ink-2:#123F35;
  --felt:#1F6F5C;
  --gold:#C9A227;
  --gold-soft:#E7D7A2;
  --cyan:#4DE0D0;
  --violet:#7B4DFF;
  --paper:#F4F0E6;
  --graphite:#1B1F1C;
  --muted:#8A948E;
  --line:rgba(201,162,39,.28);
  --line-strong:rgba(201,162,39,.58);
  --line-cyan:rgba(77,224,208,.42);
  --grid:rgba(201,162,39,.075);
  --shadow:8px 8px 0 rgba(0,0,0,.38);
  --shadow-sm:4px 4px 0 rgba(0,0,0,.42);
  --shadow-violet:6px 6px 0 rgba(123,77,255,.38);
  --radius:18px;
  --pill:999px;
  --shell:1320px;
  --gap:24px;
  --font-display:"Songti SC","Noto Serif CJK SC","Source Han Serif SC","STZhongsong",SimSun,Georgia,serif;
  --font-body:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"SFMono-Regular","JetBrains Mono","Roboto Mono",Menlo,Consolas,"Courier New",monospace;
}

*,
*::before,
*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:124px;
  scroll-behavior:smooth;
}

body{
  margin:0;
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
}

h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{max-width:100%}
main{display:block}
button{font:inherit;color:inherit}
a{color:var(--gold-soft);text-underline-offset:3px}
a:hover{color:var(--cyan)}
::selection{background:var(--gold);color:var(--graphite)}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:3px;
  border-radius:6px;
}

.shell{
  width:min(calc(100% - 48px), var(--shell));
  margin-inline:auto;
}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
}

.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:200;
  transform:translateY(-220%);
  padding:12px 18px;
  border-radius:8px;
  background:var(--gold);
  color:var(--graphite);
  font-weight:700;
  text-decoration:none;
  box-shadow:var(--shadow-sm);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0)}

/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background-color:var(--ink);
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size:64px 64px;
  border-bottom:1px solid var(--line-strong);
}

.header-strip{
  background:linear-gradient(90deg, var(--ink-deep), var(--ink));
  border-bottom:1px solid var(--line);
}
.header-strip__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  min-height:34px;
}
.header-strip__note{
  margin:0;
  overflow:hidden;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  white-space:nowrap;
  text-overflow:ellipsis;
}
.header-strip__links{
  display:flex;
  align-items:center;
  gap:18px;
  flex:0 0 auto;
}
.header-strip__links a{
  display:inline-block;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  text-decoration:none;
}
.header-strip__links a:hover{
  border-bottom-color:var(--cyan);
  color:var(--cyan);
}

.header-bar{
  display:flex;
  align-items:center;
  gap:20px;
  padding-block:14px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--paper);
  text-decoration:none;
}
.brand__mark{
  position:relative;
  display:block;
  width:42px;
  height:42px;
  flex:0 0 auto;
  border:1.5px solid var(--line-strong);
  background:linear-gradient(160deg, var(--ink-2), var(--ink));
  box-shadow:inset 0 0 0 3px rgba(8,42,36,.6);
  transition:border-color .18s ease, box-shadow .18s ease;
}
.brand__mark::before{
  content:"";
  position:absolute;
  inset:7px;
  border:1px solid rgba(77,224,208,.5);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:9px;height:9px;
  background:var(--gold);
  transform:translate(-50%,-50%) rotate(45deg);
  box-shadow:0 0 0 2px rgba(8,42,36,.9);
}
.brand:hover .brand__mark{
  border-color:var(--cyan);
  box-shadow:0 0 0 1px rgba(77,224,208,.3), inset 0 0 0 3px rgba(8,42,36,.6);
}
.brand__text{
  display:flex;
  flex-direction:column;
  gap:1px;
}
.brand__name{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.06em;
}
.brand__line{
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:9px;
  line-height:1.4;
  letter-spacing:.24em;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:10px 14px;
  border:1.5px solid var(--line-strong);
  border-radius:var(--pill);
  background:var(--ink-2);
  color:var(--gold-soft);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;
  display:inline-block;
  width:16px;
  height:10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:currentColor;
  transition:transform .2s ease, top .2s ease, bottom .2s ease;
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{bottom:4px;transform:rotate(-45deg)}

.primary-nav{
  display:flex;
  align-items:center;
  gap:14px;
  margin-left:auto;
}
.primary-nav__head{display:none}
.primary-nav__title{
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.24em;
}
.nav-close{
  display:inline-flex;
  align-items:center;
  padding:5px 11px;
  border:1px solid var(--line-strong);
  border-radius:var(--pill);
  background:transparent;
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  cursor:pointer;
}
.nav-close:hover{border-color:var(--cyan);color:var(--cyan)}

.primary-nav__list{
  display:flex;
  align-items:center;
  gap:2px;
  padding:6px;
  border:1.5px solid var(--line-strong);
  border-radius:var(--pill);
  background:var(--ink-2);
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.25), 0 8px 20px rgba(0,0,0,.25);
  counter-reset:nav;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 12px;
  border:1px solid transparent;
  border-radius:var(--pill);
  color:var(--gold-soft);
  font-size:12px;
  letter-spacing:.06em;
  text-decoration:none;
  white-space:nowrap;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease;
}
.nav-link::before{
  counter-increment:nav;
  content:counter(nav, decimal-leading-zero);
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:8px;
  letter-spacing:.06em;
}
.nav-link:hover{
  border-color:var(--line-cyan);
  background:var(--felt);
  color:#fff;
}
.nav-link:hover::before{color:var(--cyan)}
.nav-link[aria-current="page"]{
  border-color:var(--gold);
  background:var(--gold);
  color:var(--graphite);
  font-weight:700;
  box-shadow:var(--shadow-sm);
}
.nav-link[aria-current="page"]::before{color:rgba(27,31,28,.62)}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border:1.5px solid transparent;
  border-radius:var(--pill);
  font-family:var(--font-body);
  font-size:13px;
  font-weight:700;
  line-height:1.2;
  letter-spacing:.06em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.btn--gold{
  border-color:var(--gold);
  background:var(--gold);
  color:var(--graphite);
  box-shadow:var(--shadow-sm);
}
.btn--gold:hover{
  border-color:var(--cyan);
  background:var(--cyan);
  color:var(--graphite);
  box-shadow:var(--shadow-violet);
}
.btn--ghost{
  border-color:var(--line-strong);
  background:transparent;
  color:var(--gold-soft);
}
.btn--ghost:hover{
  border-color:var(--cyan);
  background:rgba(77,224,208,.08);
  color:var(--cyan);
}
.btn--violet{
  border-color:var(--violet);
  background:var(--violet);
  color:#fff;
  box-shadow:var(--shadow-sm);
}
.btn--violet:hover{
  border-color:var(--cyan);
  background:#8f66ff;
  color:#fff;
}
.primary-nav__cta{flex:0 0 auto}

.scroll-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:3px;
  overflow:hidden;
  background:rgba(8,42,36,.65);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg, var(--gold), var(--cyan), var(--violet));
  transform:scaleX(var(--progress,0));
  transform-origin:0 50%;
  transition:transform .12s linear;
}

/* ===== Generic layout ===== */
.section{
  position:relative;
  padding-block:clamp(48px,7vw,96px);
}
.section--ink{background:var(--ink);color:var(--paper)}
.section--paper{
  background:var(--paper);
  color:var(--graphite);
}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:32px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.section--paper .section__head{border-bottom-color:rgba(27,31,28,.2)}
.section__index{
  display:block;
  margin-bottom:10px;
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
}
.section--paper .section__index{color:var(--felt)}
.section__title{
  max-width:24ch;
  font-family:var(--font-display);
  font-weight:300;
  font-size:clamp(2rem,3.6vw,4rem);
  line-height:1.06;
  letter-spacing:.01em;
}
.section__title strong{
  font-weight:700;
  color:var(--gold-soft);
}
.section--paper .section__title strong{color:var(--felt)}
.section__note{
  max-width:46ch;
  color:var(--muted);
  font-size:13px;
  line-height:1.7;
}
.section--paper .section__note{color:#5a635d}

.grid{display:grid;gap:var(--gap)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);align-items:start}

.panel{
  padding:clamp(20px,3vw,32px);
  border:1.5px solid var(--line-strong);
  border-radius:var(--radius);
  background:var(--ink-2);
  box-shadow:var(--shadow);
}
.panel--paper{
  border-color:var(--graphite);
  background:var(--paper);
  color:var(--graphite);
  box-shadow:var(--shadow);
}
.panel--frame{
  border-style:dashed;
  background:transparent;
  box-shadow:none;
}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.24em;
  text-transform:uppercase;
}
.kicker::before{
  content:"";
  width:28px;
  height:1px;
  background:var(--cyan);
}

.index-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 10px;
  border:1px solid var(--line-strong);
  border-radius:var(--pill);
  background:rgba(8,42,36,.6);
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 9px;
  border:1px solid rgba(77,224,208,.35);
  border-radius:var(--pill);
  background:rgba(31,111,92,.25);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
}
.tag--gold{
  border-color:var(--line-strong);
  background:rgba(201,162,39,.12);
  color:var(--gold-soft);
}
.tag--violet{
  border-color:rgba(123,77,255,.45);
  background:rgba(123,77,255,.16);
  color:#c4b0ff;
}

.stat{
  padding-left:14px;
  border-left:2px solid var(--gold);
}
.stat__value{
  display:block;
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:clamp(1.8rem,3vw,2.6rem);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
}
.stat__label{
  display:block;
  margin-top:4px;
  color:var(--muted);
  font-size:12px;
  letter-spacing:.12em;
}

.rule{
  height:1px;
  margin-block:clamp(24px,4vw,48px);
  border:0;
  background:var(--line);
}

.measure{max-width:78ch}

.prose{
  max-width:78ch;
  color:inherit;
  font-size:16px;
  line-height:1.85;
}
.prose p{margin:0 0 1.05em}
.prose h2,
.prose h3{
  margin:1.6em 0 .6em;
  font-family:var(--font-display);
  line-height:1.25;
}
.prose h2{font-size:clamp(1.5rem,2.4vw,2rem)}
.prose h3{font-size:1.2rem}
.prose ul,
.prose ol{
  margin:0 0 1.1em;
  padding-left:1.3em;
  list-style:disc;
}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.4em}
.prose a{
  color:inherit;
  text-decoration-color:var(--gold);
}
.prose strong{color:var(--gold-soft)}
.prose--paper strong{color:var(--felt)}
.prose--paper a{text-decoration-color:var(--felt)}

.breadcrumb{margin-block:20px 0}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
}
.breadcrumb__list li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__list li + li::before{
  content:"/";
  color:var(--line-strong);
}
.breadcrumb__list a{
  color:var(--gold-soft);
  text-decoration:none;
}
.breadcrumb__list a:hover{color:var(--cyan)}

.media-frame{
  position:relative;
  aspect-ratio:16 / 10;
  overflow:hidden;
  border:2px solid var(--line-strong);
  border-radius:16px;
  background-color:var(--ink-2);
  background-image:
    linear-gradient(to right, rgba(77,224,208,.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(77,224,208,.09) 1px, transparent 1px);
  background-size:32px 32px;
  box-shadow:var(--shadow);
}
.media-frame img,
.media-frame video{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  border:1px solid rgba(244,240,230,.12);
  border-radius:inherit;
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__caption{
  position:absolute;
  left:12px;bottom:12px;
  z-index:2;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:var(--pill);
  background:rgba(8,42,36,.84);
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.1em;
}
.media-frame__placeholder{
  display:grid;
  place-items:center;
  height:100%;
  padding:20px;
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-align:center;
}

/* ===== Footer ===== */
html.is-nav-open{overflow:hidden}

.site-footer{
  position:relative;
  border-top:2px solid var(--gold);
  background-color:var(--ink);
  background-image:
    linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size:64px 64px;
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:2px;left:0;right:0;
  height:6px;
  background:repeating-linear-gradient(90deg, var(--gold) 0 10px, transparent 10px 24px);
  opacity:.5;
  pointer-events:none;
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
  padding-block:56px 40px;
}
.footer-brand{grid-column:span 4}
.footer-brand__name{
  font-family:var(--font-display);
  font-size:clamp(1.6rem,2.4vw,2.1rem);
  font-weight:700;
  line-height:1.1;
  letter-spacing:.04em;
}
.footer-brand__line{
  margin-top:6px;
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.24em;
}
.footer-brand__summary{
  max-width:36ch;
  margin-top:16px;
  color:var(--muted);
  font-size:13px;
  line-height:1.8;
}
.footer-badges{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:18px;
}
.footer-badges li{
  padding:3px 9px;
  border:1px solid var(--line);
  border-radius:var(--pill);
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
}

.footer-col{grid-column:span 2}
.footer-col__title,
.footer-contact__title{
  margin-bottom:14px;
  color:var(--gold);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.24em;
}
.footer-col__list{display:grid;gap:9px}
.footer-col__list a{
  display:inline-block;
  color:var(--gold-soft);
  font-size:13px;
  text-decoration:none;
  border-bottom:1px solid transparent;
}
.footer-col__list a:hover{
  border-bottom-color:var(--cyan);
  color:var(--cyan);
}

.footer-contact{grid-column:span 4}
.footer-contact__list{display:grid;gap:10px}
.footer-contact__list li{
  display:grid;
  grid-template-columns:46px minmax(0,1fr);
  gap:10px;
  padding-bottom:8px;
  border-bottom:1px dashed rgba(201,162,39,.18);
}
.footer-contact__label{
  color:var(--muted);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
}
.footer-contact__value{
  color:var(--paper);
  font-size:13px;
  line-height:1.6;
  overflow-wrap:anywhere;
}
.footer-contact__note{
  margin-top:14px;
  color:var(--muted);
  font-size:11px;
  line-height:1.7;
}

.footer-feedback{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding-block:20px;
  border-top:1px solid var(--line);
}
.footer-feedback__text{
  color:var(--gold-soft);
  font-size:13px;
}
.footer-feedback__link{flex:0 0 auto}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
  color:var(--muted);
  font-size:11px;
}
.footer-base__legal{
  font-family:var(--font-mono);
  letter-spacing:.06em;
}
.footer-base__links{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
}
.footer-base__links a{
  color:var(--gold-soft);
  text-decoration:none;
}
.footer-base__links a:hover{color:var(--cyan)}

.back-to-top{
  position:fixed;
  right:24px;bottom:26px;
  z-index:90;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:52px;
  height:48px;
  padding:0 14px;
  border:2px solid var(--graphite);
  border-radius:var(--pill);
  background:var(--gold);
  color:var(--graphite);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  box-shadow:var(--shadow-sm);
  transition:opacity .2s ease, transform .2s ease, visibility .2s ease, background-color .2s ease;
}
.back-to-top[data-visible="true"]{
  opacity:1;
  visibility:visible;
  transform:none;
}
.back-to-top:hover{background:var(--cyan)}

/* ===== Responsive ===== */
@media (max-width:1120px){
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;
    left:50%;
    bottom:16px;
    z-index:130;
    display:block;
    width:min(600px, calc(100% - 28px));
    max-height:74vh;
    overflow-y:auto;
    margin:0;
    padding:16px;
    border:2px solid var(--gold);
    border-radius:26px;
    background:var(--ink-2);
    box-shadow:10px 10px 0 rgba(0,0,0,.5), inset 0 0 0 1px rgba(77,224,208,.18);
    visibility:hidden;
    opacity:0;
    transform:translate(-50%, calc(100% + 40px));
    transition:transform .24s ease, opacity .24s ease, visibility .24s;
    overscroll-behavior:contain;
    -webkit-overflow-scrolling:touch;
  }
  .primary-nav[data-open="true"]{
    visibility:visible;
    opacity:1;
    transform:translate(-50%, 0);
  }
  .primary-nav__head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    margin-bottom:12px;
  }
  .primary-nav__list{
    display:grid;
    grid-template-columns:repeat(2, minmax(0,1fr));
    gap:8px;
    padding:0;
    border:0;
    border-radius:0;
    background:transparent;
    box-shadow:none;
  }
  .nav-link{
    padding:11px 12px;
    border:1px solid var(--line);
    border-radius:14px;
    background:rgba(8,42,36,.55);
    font-size:13px;
  }
  .nav-link:hover{background:var(--felt)}
  .nav-link[aria-current="page"]{box-shadow:var(--shadow-sm)}
  .primary-nav__cta{
    width:100%;
    margin-top:12px;
  }
}

@media (max-width:1080px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));padding-block:44px 32px}
  .footer-brand{grid-column:span 2}
  .footer-col{grid-column:span 1}
  .footer-contact{grid-column:span 2}
}

@media (max-width:900px){
  .header-strip__note{display:none}
  .header-strip__inner{justify-content:flex-end}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split{grid-template-columns:1fr}
  .footer-feedback{flex-direction:column;align-items:flex-start}
  .footer-feedback__link{width:100%}
}

@media (max-width:620px){
  .shell{width:calc(100% - 32px)}
  .header-bar{padding-block:10px;gap:12px}
  .brand__mark{width:36px;height:36px}
  .brand__name{font-size:17px}
  .brand__line{letter-spacing:.18em}
  .header-strip__links{gap:12px}
  .nav-toggle{padding:9px 12px;font-size:11px}
  .primary-nav{bottom:12px;padding:14px;border-radius:22px}
  .primary-nav__list{grid-template-columns:1fr}
  .section__head{align-items:flex-start}
  .grid--2,
  .grid--3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-brand,
  .footer-col,
  .footer-contact{grid-column:1 / -1}
  .footer-base{flex-direction:column;align-items:flex-start}
  .back-to-top{right:16px;bottom:96px}
}

@media (max-width:400px){
  .header-strip__links a{font-size:9px}
  .brand__name{font-size:16px}
  .brand__line{font-size: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;
  }
  .scroll-progress__bar{transition:none}
  .back-to-top{transition:none}
  .primary-nav{transition:none}
}