/* ============================================================
   三亿体育赛场 · 共享样式 /assets/site.css
   夜场战术板：深墨绿底 + 荧光青状态 + 电光橙焦点
   ============================================================ */

/* ---------- 1. tokens ---------- */
:root{
  --ink:#081C18;
  --ink-2:#0B241F;
  --moss:#14312A;
  --moss-2:#1B3F35;
  --warm:#F6F1E7;
  --cyan:#4FE3C1;
  --orange:#FF6B2C;
  --stone:#7E8F88;
  --sage:#8FAE72;
  --clay:#C46F4C;
  --sand:#E3D3B4;

  --line:rgba(227,211,180,.16);
  --line-soft:rgba(227,211,180,.08);
  --line-strong:rgba(227,211,180,.3);

  --glow:0 0 0 1px rgba(79,227,193,.32), 0 20px 44px -26px rgba(79,227,193,.5);
  --shadow-1:0 2px 0 rgba(0,0,0,.28);
  --shadow-2:0 18px 36px -28px rgba(0,0,0,.9);
  --shadow-3:0 34px 64px -34px rgba(0,0,0,.95);

  --r-sm:12px;
  --r-md:18px;
  --r-lg:26px;
  --r-pill:999px;

  --shell:1200px;
  --pad:clamp(16px,4vw,40px);

  --mono:ui-monospace,"SFMono-Regular","Roboto Mono","DIN Alternate",Menlo,Consolas,"Courier New",monospace;
  --sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. reset & base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background:var(--ink);
  color:var(--warm);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.42;
  background-image:radial-gradient(rgba(143,174,114,.18) 1px, transparent 1px);
  background-size:28px 28px;
}
main{position:relative;z-index:1;display:block}
img,svg,picture,video{max-width:100%}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:var(--cyan);text-decoration:none}
a:hover{color:#8BF0DB}
strong,b{font-weight:700}
::selection{background:var(--cyan);color:#06231D}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

/* ---------- 3. layout primitives ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.shell--narrow{max-width:820px}
.section{padding-block:clamp(36px,6vw,76px)}
.section__head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:clamp(20px,3vw,36px);
}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,16px)}

/* ---------- 4. typography ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin:0;
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:20px;height:1px;background:currentColor;opacity:.75}
.display{
  margin:0;
  font-family:var(--sans);
  font-weight:800;
  font-stretch:96%;
  font-size:clamp(28px,4.6vw,52px);
  line-height:1.1;
  letter-spacing:-.015em;
  color:var(--warm);
}
.display--xl{font-size:clamp(38px,7.2vw,84px);line-height:1.02}
.lede{
  margin:0;
  font-size:clamp(15px,1.6vw,17px);
  line-height:1.8;
  color:rgba(246,241,231,.8);
  max-width:38em;
}
.prose{max-width:40em}
.prose p + p{margin-top:1em}
.mono{
  font-family:var(--mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
  font-weight:700;
}

/* ---------- 5. buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1;
  padding:13px 20px;
  border-radius:var(--r-pill);
  border:1px solid transparent;
  text-decoration:none;
  cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--primary{background:var(--orange);color:#140E0A;box-shadow:0 14px 30px -18px rgba(255,107,44,.9)}
.btn--primary:hover{background:#FF8149;color:#140E0A}
.btn--ghost{background:transparent;border-color:rgba(227,211,180,.26);color:var(--warm)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:0 0 0 1px rgba(79,227,193,.22)}
.btn--quiet{background:rgba(20,49,42,.72);border-color:rgba(79,227,193,.24);color:var(--cyan)}
.btn--quiet:hover{border-color:var(--cyan);box-shadow:var(--glow)}

/* ---------- 6. skip link ---------- */
.skip-link{
  position:fixed;
  top:-80px;
  left:12px;
  z-index:200;
  padding:11px 18px;
  border-radius:var(--r-pill);
  background:var(--cyan);
  color:#06231D;
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  box-shadow:0 16px 32px -18px rgba(0,0,0,.9);
  transition:top .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{top:12px;color:#06231D}

/* ---------- 7. header : command rail ---------- */
.site-header{
  position:relative;
  z-index:40;
  background:linear-gradient(180deg,rgba(20,49,42,.98),rgba(8,28,24,.99));
  border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-2);
}
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:3px;
  z-index:60;
  background:rgba(227,211,180,.07);
  pointer-events:none;
}
.scroll-progress__fill{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--sage) 62%,var(--orange) 100%);
  box-shadow:0 0 14px rgba(79,227,193,.65);
  transition:width .12s linear;
}
.header-rail{position:relative}
.header-rail__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-block:13px 11px;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  color:var(--warm);
  text-decoration:none;
}
.brand:hover{color:var(--warm)}
.brand__glyph{
  display:inline-grid;
  grid-template-columns:repeat(3,3px);
  align-items:end;
  justify-items:center;
  gap:3px;
  width:26px;
  height:26px;
  padding:4px;
  border-radius:9px;
  background:rgba(79,227,193,.1);
  box-shadow:inset 0 0 0 1px rgba(79,227,193,.34);
  flex:0 0 auto;
}
.brand__glyph span{display:block;width:100%;border-radius:2px;background:var(--cyan)}
.brand__glyph span:nth-child(1){height:7px;opacity:.75}
.brand__glyph span:nth-child(2){height:16px;background:var(--orange)}
.brand__glyph span:nth-child(3){height:11px}
.brand__glyph--foot{margin-bottom:12px}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__name{
  font-size:17px;
  font-weight:800;
  letter-spacing:.04em;
  line-height:1.2;
  white-space:nowrap;
}
.brand__line{
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
  line-height:1.4;
  white-space:nowrap;
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.status-pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0;
  padding:6px 13px;
  border-radius:var(--r-pill);
  background:rgba(79,227,193,.08);
  box-shadow:inset 0 0 0 1px rgba(79,227,193,.26);
  font-size:11px;
  letter-spacing:.14em;
  line-height:1.6;
}
.status-pill__dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(79,227,193,.16);
  animation:pillPulse 2.6s var(--ease) infinite;
}
.status-pill__label{color:rgba(246,241,231,.7)}
.status-pill__value{color:var(--orange);font-size:12px;letter-spacing:.06em}
.header-back{padding:9px 15px;font-size:12.5px;white-space:nowrap}
@keyframes pillPulse{
  0%,100%{box-shadow:0 0 0 3px rgba(79,227,193,.16)}
  50%{box-shadow:0 0 0 6px rgba(79,227,193,.04)}
}

/* ---------- 8. command bar nav ---------- */
.command-bar{
  background:rgba(11,36,31,.76);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line);
}
.command-bar__inner{display:flex;align-items:stretch;flex-wrap:wrap;gap:12px}
.site-nav{flex:1 1 auto;min-width:0;display:block}
.site-nav__list{display:flex;align-items:stretch;margin:0;padding:0}
.site-nav__item{position:relative;flex:1 1 0;min-width:0}
.site-nav__item + .site-nav__item{border-left:1px solid var(--line-soft)}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:center;
  gap:8px;
  padding:12px 10px;
  font-size:13.5px;
  font-weight:600;
  letter-spacing:.02em;
  color:rgba(246,241,231,.76);
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.site-nav__index{
  font-size:10.5px;
  letter-spacing:.12em;
  color:var(--stone);
  transition:color .18s var(--ease);
}
.site-nav__label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-nav__link:hover{color:var(--warm);background:rgba(79,227,193,.07)}
.site-nav__link:hover .site-nav__index{color:var(--cyan)}
.site-nav__link[aria-current="page"]{color:var(--cyan);background:rgba(79,227,193,.1)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--orange)}
.site-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:0;
  height:2px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(79,227,193,0));
  box-shadow:0 0 10px rgba(79,227,193,.6);
}

/* ---------- 9. nav toggle (mobile) ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:13px 2px;
  background:none;
  border:0;
  color:var(--warm);
  font-family:inherit;
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  cursor:pointer;
}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:18px;flex:0 0 auto}
.nav-toggle__bars span{
  display:block;
  height:2px;
  width:100%;
  border-radius:2px;
  background:var(--cyan);
  transition:transform .22s var(--ease),opacity .22s var(--ease),background-color .22s var(--ease);
}
.nav-toggle__bars span:nth-child(2){width:72%}
.nav-toggle__count{color:var(--orange);font-size:11px;letter-spacing:.1em}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg);background:var(--orange)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0;transform:translateX(-6px)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);background:var(--orange)}

/* ---------- 10. quick filter strip ---------- */
.quick-strip{background:rgba(6,22,19,.92);border-bottom:1px solid var(--line-soft)}
.quick-strip__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  min-height:44px;
}
.quick-strip__toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
  padding:9px 0;
  background:none;
  border:0;
  color:var(--warm);
  font-family:inherit;
  font-size:12.5px;
  letter-spacing:.03em;
  cursor:pointer;
  text-align:left;
}
.quick-strip__label{
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.quick-strip__values{display:inline-flex;align-items:center;gap:8px;flex-wrap:wrap}
.quick-strip__values [data-filter-readout]{color:var(--cyan);font-weight:700}
.quick-strip__sep{color:rgba(126,143,136,.5)}
.quick-strip__chev{
  width:8px;
  height:8px;
  margin-left:2px;
  border-right:1.5px solid var(--cyan);
  border-bottom:1.5px solid var(--cyan);
  transform:rotate(45deg) translateY(-2px);
  transition:transform .22s var(--ease);
}
.quick-strip__toggle:hover .quick-strip__values [data-filter-readout]{color:#8BF0DB}
.quick-strip__toggle[aria-expanded="true"] .quick-strip__chev{transform:rotate(225deg) translateY(-2px)}
.quick-strip__go{
  flex:0 0 auto;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--orange);
  border-bottom:1px solid rgba(255,107,44,.45);
  padding-bottom:1px;
  white-space:nowrap;
}
.quick-strip__go:hover{color:#FF8149;border-bottom-color:#FF8149}

/* ---------- 11. filter panel ---------- */
.filter-panel{
  background:rgba(20,49,42,.96);
  border-top:1px solid var(--line-soft);
  animation:panelIn .22s var(--ease);
}
.filter-panel[hidden]{display:none}
.filter-panel__inner{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:18px 24px;
  padding-block:20px;
}
.filter-panel__group{display:flex;flex-direction:column;gap:9px;min-width:0}
.filter-panel__title{
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.filter-panel__chips{display:flex;flex-wrap:wrap;gap:8px}
.filter-panel__note{
  grid-column:1 / -1;
  font-size:12px;
  color:var(--stone);
  letter-spacing:.02em;
}
.chip{
  font-family:inherit;
  font-size:12.5px;
  font-weight:600;
  letter-spacing:.03em;
  line-height:1.4;
  padding:7px 14px;
  border-radius:var(--r-pill);
  border:1px solid rgba(227,211,180,.18);
  background:rgba(8,28,24,.62);
  color:rgba(246,241,231,.82);
  cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{border-color:var(--cyan);color:var(--warm)}
.chip[aria-pressed="true"]{
  background:rgba(79,227,193,.14);
  border-color:var(--cyan);
  color:var(--cyan);
  box-shadow:0 0 0 1px rgba(79,227,193,.22);
}
@keyframes panelIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}

/* ---------- 12. cards & bento ---------- */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(158deg,rgba(27,63,53,.9),rgba(11,36,31,.95));
  box-shadow:var(--shadow-2);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-3)}
.card__label{
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
}
.card__value{
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(26px,3.6vw,42px);
  line-height:1.06;
  letter-spacing:-.01em;
  color:var(--orange);
}
.card__note{font-size:13px;line-height:1.7;color:rgba(246,241,231,.66)}
.card--focus{border-color:rgba(255,107,44,.5);box-shadow:0 0 0 1px rgba(255,107,44,.22),var(--shadow-3)}
.card--glow{border-color:rgba(79,227,193,.38);box-shadow:var(--glow)}

.bento{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,2vw,24px);
}
.bento__cell{grid-column:span 4;min-width:0}
.bento__cell--wide{grid-column:span 6}
.bento__cell--focus{grid-column:span 8}
.bento__cell--full{grid-column:1 / -1}
.bento__cell--tall{grid-row:span 2}

/* ---------- 13. tags & breadcrumbs ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--r-pill);
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  line-height:1.6;
  border:1px solid;
  background:rgba(8,28,24,.55);
}
.tag--cyan{color:var(--cyan);border-color:rgba(79,227,193,.4)}
.tag--clay{color:var(--clay);border-color:rgba(196,111,76,.5)}
.tag--sage{color:var(--sage);border-color:rgba(143,174,114,.5)}
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:7px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--stone);
}
.breadcrumbs__link{
  color:rgba(246,241,231,.72);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumbs__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumbs__sep{color:rgba(126,143,136,.55)}
.breadcrumbs__current{color:var(--cyan);font-weight:600}

/* ---------- 14. media frame (image placeholder base) ---------- */
.media-frame{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  aspect-ratio:16 / 10;
  border-radius:var(--r-md);
  border:1px solid var(--line);
  background:
    radial-gradient(120% 130% at 18% 0%,rgba(143,174,114,.24),rgba(8,28,24,.94) 62%),
    linear-gradient(160deg,rgba(196,111,76,.18),rgba(8,28,24,.95));
}
.media-frame::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:radial-gradient(rgba(79,227,193,.22) 1px,transparent 1px);
  background-size:18px 18px;
  opacity:.5;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(8,28,24,0) 34%,rgba(8,28,24,.82) 100%);
}
.media-frame img,
.media-frame picture > *{
  position:relative;
  z-index:1;
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.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:14px;
  bottom:12px;
  z-index:2;
  margin:0;
  font-size:11px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:rgba(246,241,231,.86);
}

/* ---------- 15. reveal ---------- */
html.reveal-armed [data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
html.reveal-armed [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 16. footer ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:clamp(40px,7vw,88px);
  padding-block:clamp(36px,5vw,64px) 26px;
  background:linear-gradient(180deg,rgba(20,49,42,.62),rgba(6,22,19,.99));
  border-top:1px solid var(--line);
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(250px,1.5fr) repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,44px);
}
.footer-brand{display:flex;flex-direction:column;min-width:0}
.footer-brand__name{
  font-size:18px;
  font-weight:800;
  letter-spacing:.05em;
  line-height:1.3;
}
.footer-brand__tag{
  margin-top:6px;
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
  line-height:1.7;
}
.footer-brand__contact{
  margin-top:14px;
  font-size:12.5px;
  line-height:1.95;
  color:rgba(246,241,231,.68);
  letter-spacing:.01em;
  max-width:30em;
}
.footer-col{min-width:0}
.footer-col__title{
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--stone);
  padding-bottom:10px;
  border-bottom:1px dashed var(--line-soft);
}
.footer-col__list{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.footer-col__link{
  display:inline-block;
  font-size:14px;
  color:rgba(246,241,231,.76);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);transform:translateX(3px)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 20px;
  margin-top:clamp(28px,4vw,44px);
  padding-top:18px;
  border-top:1px solid var(--line-soft);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--stone);
}
.footer-base__legal{color:rgba(126,143,136,.95)}
.footer-base__copy{color:rgba(246,241,231,.6);font-variant-numeric:tabular-nums}
.footer-base__note{flex:1 0 100%;font-size:11.5px;line-height:1.8;color:rgba(126,143,136,.85)}

/* ---------- 17. responsive : tablet ---------- */
@media (min-width:900px){
  .site-header{position:sticky;top:0;backdrop-filter:blur(10px)}
}
@media (max-width:1024px){
  .bento{grid-template-columns:repeat(8,minmax(0,1fr))}
  .bento__cell{grid-column:span 4}
  .bento__cell--wide{grid-column:span 4}
  .bento__cell--focus{grid-column:span 8}
  .footer-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:899px){
  .nav-toggle{display:inline-flex}
  .command-bar__inner{justify-content:space-between}
  .site-nav{flex:0 0 100%;display:none}
  .site-nav[data-open="true"]{display:block;animation:panelIn .22s var(--ease)}
  .site-nav__list{flex-direction:column}
  .site-nav__item + .site-nav__item{border-left:0;border-top:1px solid var(--line-soft)}
  .site-nav__link{padding:14px 6px;font-size:15px}
  .site-nav__link[aria-current="page"]::after{
    left:0;
    right:auto;
    top:9px;
    bottom:9px;
    width:3px;
    height:auto;
    background:linear-gradient(180deg,var(--cyan),rgba(79,227,193,.1));
  }
  .site-header[data-open="true"]{border-bottom-color:rgba(79,227,193,.4)}
  .filter-panel__inner{grid-template-columns:1fr}
}
/* ---------- 18. responsive : phone ---------- */
@media (max-width:640px){
  body{font-size:15.5px}
  .brand__name{font-size:15px}
  .brand__line{font-size:9.5px;letter-spacing:.16em}
  .status-pill{display:none}
  .header-back{padding:8px 12px;font-size:12px}
  .quick-strip__inner{flex-wrap:wrap;padding-block:4px}
  .quick-strip__toggle{font-size:12px;padding-block:7px}
  .quick-strip__go{font-size:11.5px}
  .bento{grid-template-columns:repeat(4,minmax(0,1fr))}
  .bento__cell,
  .bento__cell--wide,
  .bento__cell--focus{grid-column:span 4}
  .bento__cell--tall{grid-row:span 1}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-base{flex-direction:column;align-items:flex-start}
  .section__head{align-items:flex-start}
}
/* ---------- 19. motion & print guards ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:hover,.card:hover,.footer-col__link:hover{transform:none}
  .scroll-progress__fill{transition:none}
  html.reveal-armed [data-reveal]{opacity:1;transform:none;transition:none}
}