/* ==========================================================================
   best365官 · 共享外壳样式表 /assets/site.css
   骨架：档案仪表盘 · 左右分屏 · 粗边框 · 时间标注
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 16px);
}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,dt,table,th,td{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
main{display:block}

/* ---------- 2. Tokens ---------- */
:root{
  --ink:#0A1730;
  --ink-2:#14284C;
  --silver:#C3CAD8;
  --white:#EEF2F8;
  --orange:#FF6A1F;
  --cyan:#22D9CE;
  --graphite:#5A6579;
  --edge:#2A3B5E;
  --panel:#E8ECF3;
  --amber:#D98A1F;

  --font-display:"Archivo Narrow","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Inter","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --w-max:1360px;
  --gutter:clamp(20px,4.6vw,72px);
  --header-h:clamp(62px,6.4vw,86px);
  --section-gap:clamp(80px,9vw,160px);
  --radius:2px;
  --shadow-hard:8px 8px 0 rgba(0,0,0,.34);
  --dur:.32s;
  --ease:cubic-bezier(.22,.8,.28,1);
}

/* ---------- 3. Base ---------- */
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(42,59,94,.30) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,59,94,.30) 1px,transparent 1px);
  background-size:88px 88px;
  color:var(--silver);
  font-family:var(--font-body);
  font-size:clamp(15px,1.02vw,17px);
  line-height:1.7;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
p{text-wrap:pretty;max-width:72ch}
h1,h2,h3{text-wrap:balance}
::selection{background:var(--orange);color:var(--ink)}
#main-content{scroll-margin-top:calc(var(--header-h) + 12px)}

/* ---------- 4. Layout ---------- */
.container{width:100%;max-width:var(--w-max);margin-inline:auto;padding-inline:var(--gutter)}
.container-narrow{max-width:900px}
.section{padding-block:clamp(52px,6.5vw,104px)}
.section--gap{padding-block:var(--section-gap)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,36px)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- 5. Typography ---------- */
.h-xl{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(2.6rem,6vw,5.4rem);
  line-height:1;
  letter-spacing:-.01em;
  color:var(--white);
}
.h-lg{
  font-family:var(--font-display);
  font-weight:200;
  font-size:clamp(1.9rem,3.6vw,3.1rem);
  line-height:1.05;
  letter-spacing:-.005em;
  color:var(--white);
}
.h-md{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.2rem,1.8vw,1.6rem);
  line-height:1.2;
  color:var(--white);
}
.h-xl strong,.h-lg strong,.h-md strong{font-weight:700}
.lede{font-size:clamp(16px,1.28vw,19px);line-height:1.7;color:var(--silver);max-width:64ch}
.meta-note{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--graphite);line-height:1.6}
.field-label{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--graphite);
}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
em.note{font-style:normal;color:var(--graphite);font-size:14px}
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 6. Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 20px;
  border:2px solid var(--edge);
  border-radius:var(--radius);
  background:var(--ink-2);
  color:var(--white);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  box-shadow:4px 4px 0 rgba(0,0,0,.34);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 rgba(0,0,0,.4)}
.btn-primary{background:var(--orange);border-color:var(--orange);color:var(--ink)}
.btn-primary:hover{background:#ff7f3d;border-color:#ff7f3d;color:var(--ink)}
.btn-ghost{background:transparent;color:var(--silver);box-shadow:none}
.btn-ghost:hover{border-color:var(--cyan);color:var(--white);box-shadow:4px 4px 0 rgba(34,217,206,.18)}
.btn-line{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:2px 0;
  border:0;
  border-bottom:2px solid var(--orange);
  background:none;
  color:var(--white);
  font-size:14px;
  font-weight:600;
  box-shadow:none;
}
.btn-line:hover{color:var(--orange)}
.btn-line::after{content:"→";font-family:var(--font-mono);font-size:13px}

/* ---------- 7. Breadcrumb ---------- */
.breadcrumb{padding-top:calc(var(--header-h) + 20px)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--graphite)}
.breadcrumb-list li{display:flex;align-items:baseline;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--edge)}
.breadcrumb-list a{color:var(--graphite);transition:color var(--dur) var(--ease)}
.breadcrumb-list a:hover{color:var(--orange)}
.breadcrumb-list [aria-current="page"]{color:var(--silver)}

/* ---------- 8. Skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  transform:translateY(-220%);
  padding:10px 16px;
  border:2px solid var(--ink);
  background:var(--orange);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  transition:transform .2s ease-out;
}
.skip-link:focus{transform:none}

/* ---------- 9. Header ---------- */
.site-header{
  position:fixed;
  inset:0 0 auto 0;
  z-index:60;
  color:var(--white);
  background:transparent;
  border-bottom:2px solid transparent;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header[data-scrolled]{
  background:rgba(10,23,48,.965);
  border-bottom-color:var(--edge);
  box-shadow:0 12px 30px rgba(0,0,0,.45);
  -webkit-backdrop-filter:blur(6px);
  backdrop-filter:blur(6px);
}
.header-rail{position:relative;height:4px;background:var(--ink-2);overflow:hidden}
.rail-ticks{position:absolute;inset:0;background-image:repeating-linear-gradient(90deg,var(--edge) 0 2px,transparent 2px 24px)}
.scroll-progress{
  position:absolute;inset:0;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--orange),var(--cyan));
}
.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,34px);
  height:var(--header-h);
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto;padding:6px 2px}
.brand-mark{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--ink);
  background:var(--cyan);
  padding:4px 7px;
  border-radius:1px;
}
.brand-text{display:grid;gap:2px;line-height:1.1}
.brand-name{font-family:var(--font-display);font-weight:700;font-size:17px;color:var(--white);letter-spacing:.01em}
.brand-line{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--graphite)}

.site-nav{transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s linear}
.nav-list{display:flex;align-items:center;gap:clamp(10px,1.4vw,22px)}
.nav-item{display:flex}
.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:6px;
  padding:8px 2px;
  border-bottom:2px solid transparent;
  font-size:14px;
  color:var(--silver);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--graphite);transition:color var(--dur) var(--ease)}
.nav-link:hover{color:var(--white)}
.nav-link:hover .nav-index{color:var(--cyan)}
.nav-link[aria-current="page"]{color:var(--white);border-bottom-color:var(--orange)}
.nav-link[aria-current="page"] .nav-index{color:var(--orange)}

.header-meta{display:flex;align-items:center;gap:clamp(10px,1.4vw,18px);margin-left:clamp(6px,1.4vw,26px)}
.sync-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border:2px solid var(--edge);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  white-space:nowrap;
}
.sync-label{color:var(--graphite)}
.sync-value{color:var(--cyan)}
.header-cta{white-space:nowrap}

.nav-toggle{
  display:none;
  width:44px;
  height:40px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border:2px solid var(--edge);
  border-radius:var(--radius);
  background:var(--ink-2);
}
.nav-toggle-bar{display:block;width:18px;height:2px;background:var(--white);transition:transform .24s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ---------- 10. Back to top ---------- */
.to-top{
  position:fixed;
  right:clamp(16px,3vw,40px);
  bottom:clamp(16px,3vw,40px);
  z-index:70;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  border:2px solid var(--orange);
  border-radius:var(--radius);
  background:rgba(10,23,48,.94);
  color:var(--orange);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s linear,background-color .24s var(--ease),color .24s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--orange);color:var(--ink)}
.to-top-mark{font-size:13px;line-height:1}
.to-top-text{line-height:1}

/* ---------- 11. Archive components ---------- */
.dossier{
  border:2px solid var(--edge);
  background:linear-gradient(180deg,rgba(20,40,76,.92),rgba(10,23,48,.92));
  box-shadow:var(--shadow-hard);
}
.dossier-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 18px;
  padding:14px clamp(16px,2vw,26px);
  border-bottom:2px solid var(--edge);
  background:rgba(10,23,48,.72);
}
.dossier-no{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;color:var(--orange)}
.dossier-title{font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--white);margin-right:auto}
.dossier-status{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--cyan);
  border:2px solid rgba(34,217,206,.5);
  padding:3px 9px;
}
.dossier-body{padding:clamp(16px,2.4vw,32px)}

.card{
  position:relative;
  border:2px solid var(--edge);
  background:var(--ink-2);
  padding:clamp(18px,2vw,28px);
  box-shadow:var(--shadow-hard);
  transition:transform .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.card:hover{transform:translate(-2px,-2px);border-color:var(--cyan);box-shadow:10px 10px 0 rgba(34,217,206,.16)}
.card-head{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:12px;
  padding-bottom:12px;
  border-bottom:1px solid var(--edge);
  margin-bottom:14px;
}
.card-no{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--orange)}
.card-title{font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--white)}
.card-body{font-size:14.5px;color:var(--silver)}
.card-meta{
  margin-top:14px;
  display:flex;
  flex-wrap:wrap;
  gap:6px 16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  color:var(--graphite);
}

.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border:2px solid var(--edge);
  border-radius:var(--radius);
  background:transparent;
  color:var(--silver);
  font-size:13px;
  line-height:1.3;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.tag:hover{border-color:var(--cyan);color:var(--white)}
.tag[data-active]{border-color:var(--orange);background:var(--orange);color:var(--ink);font-weight:600}

.ledger-wrap{border:2px solid var(--edge);background:var(--ink-2);overflow-x:auto}
.ledger{width:100%;min-width:520px;font-size:14px}
.ledger caption{
  text-align:left;
  padding:0 0 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--graphite);
}
.ledger th{
  text-align:left;
  padding:10px 12px;
  border-bottom:2px solid var(--edge);
  font-family:var(--font-mono);
  font-weight:500;
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--graphite);
  white-space:nowrap;
}
.ledger td{padding:12px;border-bottom:1px solid rgba(42,59,94,.7);color:var(--silver);vertical-align:top}
.ledger td.num{color:var(--white)}
.ledger tbody tr{transition:background-color .24s var(--ease)}
.ledger tbody tr:hover{background:rgba(34,217,206,.07)}
.ledger tbody tr:hover td:first-child{box-shadow:inset 3px 0 0 var(--orange)}
.ledger tbody tr:last-child td{border-bottom:0}

.timeline{display:grid;border-left:2px solid var(--edge);margin-left:8px}
.timeline-item{position:relative;padding:0 0 28px 26px}
.timeline-item:last-child{padding-bottom:6px}
.timeline-item::before{
  content:"";
  position:absolute;
  left:-7px;
  top:7px;
  width:12px;
  height:12px;
  background:var(--ink);
  border:2px solid var(--cyan);
  transform:rotate(45deg);
}
.timeline-item[data-live]::before{background:var(--orange);border-color:var(--orange)}
.timeline-date{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--orange)}
.timeline-title{font-family:var(--font-display);font-weight:700;font-size:1rem;color:var(--white);margin-top:4px}
.timeline-text{margin-top:6px;font-size:14px;color:var(--silver);max-width:68ch}

.readout{display:grid;gap:6px;padding:16px 18px;border:2px solid var(--edge);background:rgba(20,40,76,.55)}
.readout-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1;color:var(--white)}
.readout-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--graphite)}

.stamp{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:4px 10px;
  border:2px solid var(--edge);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--silver);
}
.stamp--live{border-color:var(--orange);color:var(--orange)}
.stamp--warn{border-color:var(--amber);color:var(--amber)}

.divider{height:2px;border:0;background:var(--edge);margin:0}
.rule-tick{height:6px;border:0;background-image:repeating-linear-gradient(90deg,var(--edge) 0 2px,transparent 2px 20px)}

/* ---------- 12. Chapter index ---------- */
.section-index{
  position:sticky;
  top:calc(var(--header-h) + 26px);
  display:grid;
  gap:4px;
  align-content:start;
  font-family:var(--font-mono);
  font-size:12px;
}
.section-index-title{
  padding-bottom:10px;
  margin-bottom:6px;
  border-bottom:2px solid var(--edge);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--graphite);
}
.index-link{
  display:flex;
  gap:10px;
  padding:6px 10px;
  border-left:2px solid var(--edge);
  color:var(--graphite);
  letter-spacing:.04em;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.index-link:hover{color:var(--white);border-left-color:var(--cyan)}
.index-link.is-current{color:var(--white);border-left-color:var(--orange);background:rgba(255,106,31,.09)}

/* ---------- 13. Figure / image frames ---------- */
.figure{display:grid;gap:10px}
.figure-frame{
  position:relative;
  display:block;
  border:2px solid var(--edge);
  background-color:var(--ink-2);
  background-image:
    linear-gradient(rgba(42,59,94,.5) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,59,94,.5) 1px,transparent 1px);
  background-size:32px 32px;
  box-shadow:var(--shadow-hard);
  overflow:hidden;
}
.figure-frame img{width:100%;height:100%;object-fit:cover}
.figure--21x9 .figure-frame{aspect-ratio:21/9}
.figure--16x9 .figure-frame{aspect-ratio:16/9}
.figure--4x3 .figure-frame{aspect-ratio:4/3}
.figure--1x1 .figure-frame{aspect-ratio:1/1}
.figure--3x4 .figure-frame{aspect-ratio:3/4}
.figure-cap{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--graphite)}

/* ---------- 14. Footer ---------- */
.site-footer{position:relative;margin-top:var(--section-gap);border-top:2px solid var(--edge);background:var(--ink)}
.footer-rail{
  height:6px;
  background-color:var(--ink-2);
  background-image:repeating-linear-gradient(90deg,var(--edge) 0 2px,transparent 2px 28px);
}
.footer-inner{padding-block:clamp(40px,5vw,76px) clamp(24px,3vw,40px)}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(240px,1.5fr) repeat(3,minmax(140px,1fr));
  gap:clamp(24px,3vw,56px);
}
.footer-brand-name{font-family:var(--font-display);font-weight:700;font-size:clamp(20px,2vw,26px);letter-spacing:.02em;color:var(--white)}
.footer-brand-line{margin-top:6px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--cyan)}
.footer-note{margin-top:14px;font-size:14px;line-height:1.7;color:var(--silver);max-width:44ch}
.footer-stamp{margin-top:16px;font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--graphite)}
.footer-col{display:block}
.footer-col-title{
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:2px solid var(--edge);
  font-family:var(--font-mono);
  font-weight:500;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--white);
}
.footer-list{display:grid;gap:8px}
.footer-link{
  font-size:14px;
  color:var(--silver);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--orange);border-bottom-color:var(--orange)}
.footer-contact{
  margin-top:clamp(28px,4vw,56px);
  padding:clamp(20px,2.4vw,32px);
  display:grid;
  gap:18px;
  justify-items:start;
  border:2px solid var(--edge);
  background:var(--ink-2);
  box-shadow:var(--shadow-hard);
}
.contact-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px 28px;width:100%}
.contact-item{display:grid;gap:4px}
.contact-key{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--graphite)}
.contact-value{font-size:14px;line-height:1.65;color:var(--white);overflow-wrap:anywhere}
.footer-base{
  margin-top:clamp(28px,4vw,48px);
  padding-top:20px;
  border-top:2px solid var(--edge);
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px 28px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.04em;
  line-height:1.7;
  color:var(--graphite);
}
.footer-legal{color:var(--silver);max-width:none}
.footer-copy{margin-left:auto;color:var(--graphite);max-width:none}
.footer-disclaimer{flex-basis:100%;font-size:11px;color:var(--graphite);max-width:none}

/* ---------- 15. Reveal ---------- */
.js [data-reveal]{opacity:0;transform:translateY(14px)}
.js [data-reveal][data-revealed]{opacity:1;transform:none}
[data-reveal]{transition:opacity .38s var(--ease),transform .38s var(--ease)}

/* ---------- 16. Focus ---------- */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}

/* ---------- 17. Responsive ---------- */
@media (max-width:1060px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;
    top:calc(var(--header-h) + 4px);
    left:0;
    right:0;
    z-index:55;
    display:block;
    max-height:calc(100vh - var(--header-h) - 4px);
    overflow-y:auto;
    padding:18px var(--gutter) 28px;
    background:rgba(10,23,48,.985);
    border-top:2px solid var(--edge);
    border-bottom:2px solid var(--edge);
    box-shadow:0 20px 40px rgba(0,0,0,.5);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    pointer-events:none;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav-list{display:grid;gap:0;align-items:stretch}
  .nav-item{display:block}
  .nav-link{
    width:100%;
    justify-content:space-between;
    padding:14px 2px;
    font-size:16px;
    border-bottom:2px solid var(--edge);
  }
  .nav-link[aria-current="page"]{border-bottom-color:var(--orange)}
  .nav-item:last-child .nav-link{border-bottom-color:transparent}
  .nav-index{font-size:11px}
}
@media (max-width:1024px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3{grid-column:span 3}
  .col-4{grid-column:span 3}
  .col-5{grid-column:span 6}
  .col-6{grid-column:span 6}
  .col-7{grid-column:span 6}
  .col-8{grid-column:span 6}
  .col-9{grid-column:span 6}
  .col-12{grid-column:span 6}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .section-index{position:static;top:auto}
}
@media (max-width:880px){
  .sync-tag{display:none}
}
@media (max-width:640px){
  :root{--section-gap:clamp(64px,14vw,96px)}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 6}
  .brand-line{display:none}
  .header-cta{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-contact{box-shadow:6px 6px 0 rgba(0,0,0,.32)}
  .footer-base{flex-direction:column;align-items:flex-start}
  .footer-copy{margin-left:0}
  .to-top{right:14px;bottom:14px;padding:9px 12px}
}

/* ---------- 18. Motion / print safety ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  .js [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}