/* piece 4: nav options. Same items on phone and desktop. */
.nav .wrap{gap:var(--s3)}
.nv{display:flex;align-items:center;gap:var(--s4);margin-left:auto;font:600 15px/1 D}
.nv>a,.nv summary{text-decoration:none;white-space:nowrap;padding:14px 0;cursor:pointer}
.nv>a:hover,.nv summary:hover{text-decoration:underline;text-underline-offset:4px}
.nv a[aria-current=page]{text-decoration:underline;text-decoration-color:var(--beak);text-decoration-thickness:3px;text-underline-offset:6px}
.bot{display:inline-flex;align-items:center;gap:6px;min-height:40px;padding:0 14px;background:var(--sun);border:2px solid var(--ink);border-radius:10px;box-shadow:2px 2px 0 var(--ink);text-decoration:none;font:700 15px/1 D;white-space:nowrap}
.bot svg{width:16px;height:16px;flex:none}
.bot:hover{background:var(--box)}
.nv>a.bot{padding:0 14px}
/* A: one bar; phone = logo row + full-width link row */
@media(max-width:719px){.na .wrap{flex-wrap:wrap;height:auto;padding-top:10px;padding-bottom:0}
 .na .nv{order:3;width:100%;margin:6px 0 0;padding:0;border-top:1.5px solid var(--ink);justify-content:space-between;gap:0;font-size:15px}
 .na .nv .bot{min-height:36px;margin:4px 0}}
/* B: Data menu */
.dm{position:relative}.dm summary{list-style:none;display:flex;align-items:center;gap:4px}.dm summary::-webkit-details-marker{display:none}
.dm summary:after{content:"";width:7px;height:7px;border:solid var(--ink);border-width:0 2px 2px 0;transform:translateY(-2px) rotate(45deg)}
.dm[open] summary:after{transform:translateY(1px) rotate(-135deg)}
.dmp{position:absolute;right:-12px;top:calc(100% + 8px);z-index:8;width:260px;background:var(--cream);border:2px solid var(--ink);border-radius:12px;box-shadow:4px 4px 0 var(--ink);padding:6px}
.dmp a{display:block;padding:10px 12px;border-radius:8px;text-decoration:none}.dmp a:hover{background:var(--box)}
.dmp b{display:block;font:700 15px/1.2 D}.dmp small{display:block;font:400 13px/1.35 D;color:var(--muted);margin-top:3px}
@media(max-width:719px){.nb .logo span{display:none}.nb .nv{gap:14px;font-size:15px}.nb .nv>a.bot{padding:0 10px}.dmp{right:-60px}}
@media(max-width:359px){.nb .nv{gap:10px}}
/* C: logo + one CTA, sticky numbered index */
.idx{position:sticky;top:44px;z-index:7;background:var(--cream);border-bottom:1.5px solid var(--ink)}
.idx .wrap{display:flex;gap:var(--s5);height:44px;align-items:center;font:600 14px/1 D}
.idx a{text-decoration:none;padding:15px 0;display:flex;gap:6px;align-items:baseline;white-space:nowrap}.idx a i{font:700 12px/1 B;font-style:normal;color:var(--beak)}
.idx a:hover{text-decoration:underline;text-underline-offset:4px}
@media(max-width:719px){.idx .wrap{justify-content:space-between;gap:0}}
section[id]{scroll-margin-top:110px}