:root{--nav-h:82px}

/* Safari stability pass: the sticky wrapper keeps a constant geometry. */
.nav-placeholder{display:none!important}
.nav-shell{
  position:-webkit-sticky!important;
  position:sticky!important;
  top:0!important;
  z-index:100!important;
  height:calc(82px + var(--safe-top));
  padding:calc(8px + var(--safe-top)) .55rem 8px!important;
  background:linear-gradient(180deg,rgba(245,245,247,.985),rgba(245,245,247,.93))!important;
  border:0!important;
  box-shadow:none!important;
  overflow-anchor:none;
}
.nav-glass{
  --glass-x:0px;
  --glass-y:0px;
  --reading-progress:0;
  position:relative;
  height:66px;
  overflow:hidden;
  isolation:isolate;
  background:transparent;
}
.nav-glass::before{
  content:"";
  position:absolute;
  z-index:0;
  inset:var(--glass-y) var(--glass-x);
  border:1px solid rgba(255,255,255,.92);
  border-radius:999px;
  pointer-events:none;
  background:
    linear-gradient(180deg,rgba(255,255,255,.92),rgba(248,249,252,.80)),
    linear-gradient(135deg,rgba(255,255,255,.58),rgba(228,234,246,.42));
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,1),
    inset 0 -1px 0 rgba(72,88,120,.05),
    0 8px 24px rgba(26,40,70,.075);
  transition:inset .22s cubic-bezier(.2,.78,.2,1),box-shadow .22s ease,background .22s ease;
}
/* The capsule background itself is the reading-progress indicator. */
.nav-glass::after{
  content:"";
  position:absolute;
  z-index:1;
  inset:var(--glass-y) var(--glass-x);
  border-radius:999px;
  pointer-events:none;
  background:
    linear-gradient(90deg,rgba(74,133,247,.10),rgba(70,137,255,.18) 72%,rgba(83,154,255,.25)),
    radial-gradient(circle at 100% 50%,rgba(118,174,255,.22),transparent 35%);
  box-shadow:inset -1px 0 0 rgba(76,139,248,.20),inset 0 1px 0 rgba(255,255,255,.28);
  transform:scaleX(var(--reading-progress));
  transform-origin:left center;
  will-change:transform;
}
.nav-shell.is-compact .nav-glass{--glass-x:8px;--glass-y:5px}
.nav-scroll{
  position:relative;
  z-index:2;
  display:flex!important;
  align-items:center;
  gap:.48rem!important;
  height:100%;
  padding:7px 13px!important;
  overflow-x:auto!important;
  overflow-y:hidden!important;
  scroll-behavior:auto!important;
  scroll-snap-type:none!important;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.nav-scroll::-webkit-scrollbar{display:none}
.nav-chip{
  flex:0 0 auto;
  min-height:44px!important;
  padding:0 1.02rem!important;
  border:1px solid rgba(35,45,65,.07)!important;
  border-radius:999px!important;
  background:rgba(255,255,255,.74)!important;
  color:#474950!important;
  box-shadow:0 2px 8px rgba(30,40,60,.03)!important;
  font-size:15px!important;
  font-weight:680!important;
  letter-spacing:-.025em;
  white-space:nowrap;
  transition:min-height .18s ease,padding .18s ease,font-size .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease!important;
}
.nav-shell.is-compact .nav-chip{
  min-height:38px!important;
  padding:0 .9rem!important;
  font-size:13.5px!important;
}
.nav-chip:active{opacity:.72}
.nav-chip.is-active{
  background:linear-gradient(145deg,rgba(55,116,230,.96),rgba(43,95,204,.96))!important;
  color:#fff!important;
  border-color:rgba(255,255,255,.16)!important;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.24),0 4px 11px rgba(47,99,214,.18)!important;
}
.read-progress{display:none!important}
.read-progress__bar{display:none!important}
.nav-top-btn,.top-tap{display:none!important}

/* Equipment detail */
.product-row__budget{border-top:0!important;padding-top:0!important;margin-top:.78rem!important}

/* iPhone lessons: avoid doubled vertical gaps. */
#iphone > .section{padding-bottom:.85rem!important}
#iphone > .section .scroll-row:last-child{padding-bottom:28px!important}
#iphone > .section + .lesson{padding-top:2.6rem!important}
#iphone > .lesson{padding:2.8rem 0 2.25rem!important}
#iphone > .lesson + .lesson{padding-top:2.65rem!important}

/* Curated reading cards */
.curated-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-top:.25rem;margin-bottom:.7rem}
.curated-head h3{font-size:22px;margin:0}
.curated-head p{margin:.35rem 0 0;font-size:14px;line-height:1.5;color:var(--secondary)}
.curated-tools{display:flex;gap:.42rem;flex:0 0 auto;flex-wrap:wrap}
.curated-tool{min-height:2.35rem;padding:0 .72rem;border:1px solid rgba(0,0,0,.065);border-radius:999px;background:rgba(255,255,255,.84);color:#555860;font-size:12px;font-weight:680;box-shadow:0 2px 8px rgba(30,40,60,.03)}
.curated-tool.is-active{background:#1f2024;color:#fff;border-color:#1f2024}
.curated-tool__count{display:inline-grid;place-items:center;min-width:1.25rem;height:1.25rem;margin-left:.25rem;padding:0 .28rem;border-radius:999px;background:rgba(47,99,214,.1);color:var(--accent);font-size:10px;font-weight:760}
.curated-tool.is-active .curated-tool__count{background:rgba(255,255,255,.14);color:#fff}
.curated-links-row{min-height:24rem}
.curated-card{width:min(78vw,19rem);overflow:hidden;background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--shadow);transition:opacity .18s ease}
.curated-card__visual{position:relative;height:12.2rem;background:#e9eaee;overflow:hidden}
.curated-card__visual a{display:block;width:100%;height:100%}
.curated-card__visual img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.curated-card:active .curated-card__visual img{transform:scale(1.015)}
.curated-platform{position:absolute;left:.8rem;top:.8rem;padding:.34rem .58rem;border-radius:999px;background:rgba(23,24,28,.72);color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);font-size:11px;font-weight:700}
.curated-bookmark{position:absolute;right:.72rem;top:.72rem;display:grid;place-items:center;width:2.45rem;height:2.45rem;border:1px solid rgba(255,255,255,.64);border-radius:50%;background:rgba(255,255,255,.82);color:#303238;box-shadow:0 4px 14px rgba(0,0,0,.08)}
.curated-bookmark svg{width:1.05rem;height:1.05rem;stroke:currentColor;fill:none;stroke-width:1.8}
.curated-bookmark.is-favorite{background:rgba(31,32,36,.9);color:#fff;border-color:rgba(255,255,255,.24)}
.curated-bookmark.is-favorite svg{fill:currentColor}
.curated-card__body{padding:1rem 1.05rem 1.08rem}
.curated-meta{display:flex;align-items:center;gap:.48rem;flex-wrap:wrap;color:var(--secondary);font-size:11px;margin-bottom:.42rem}
.curated-meta strong{color:var(--accent);font-weight:700}
.curated-card h3{font-size:18px;line-height:1.36;margin:0 0 .5rem}
.curated-card p{font-size:13px;line-height:1.53;color:var(--secondary);margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.curated-tags{display:flex;flex-wrap:wrap;gap:.32rem;margin-top:.8rem}
.curated-tags span{padding:.3rem .46rem;border-radius:8px;background:var(--grouped);color:#60636a;font-size:11px}
.curated-open{display:inline-block;margin-top:.88rem;color:var(--accent);font-size:13px;font-weight:700}
.curated-status{min-height:1.25rem;margin-top:.25rem;font-size:12px;color:var(--secondary)}
.curated-skeleton{width:min(78vw,19rem);height:23rem;border-radius:var(--r-lg);background:linear-gradient(90deg,#ececf0,#f6f6f8,#ececf0);background-size:220% 100%;animation:curatedShimmer 1.2s linear infinite}
@keyframes curatedShimmer{to{background-position:-220% 0}}

/* Explicit favorites list */
.curated-favorites-panel{margin-top:.2rem;margin-bottom:.85rem;padding:.9rem;background:rgba(255,255,255,.88);border:1px solid rgba(0,0,0,.055);border-radius:20px;box-shadow:0 9px 24px rgba(35,45,70,.06)}
.curated-favorites-panel[hidden]{display:none!important}
.curated-favorites-panel__top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:.55rem}
.curated-favorites-panel__top strong{font-size:15px;color:var(--ink)}
.curated-favorites-close{border:0;background:transparent;color:var(--secondary);font-size:12px;font-weight:680;padding:.35rem .25rem}
.curated-favorites-list{display:grid;gap:.45rem}
.curated-favorite-row{display:grid;grid-template-columns:3.2rem minmax(0,1fr) auto;align-items:center;gap:.7rem;padding:.55rem;border-radius:14px;background:var(--grouped)}
.curated-favorite-row img{width:3.2rem;height:3.2rem;object-fit:cover;border-radius:10px;background:#e7e8ec}
.curated-favorite-row__copy{min-width:0}
.curated-favorite-row__copy small{display:block;color:var(--accent);font-size:10px;font-weight:700;margin-bottom:.15rem}
.curated-favorite-row__copy a{display:block;color:var(--ink);font-size:13px;font-weight:680;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.curated-favorite-remove{width:2.2rem;height:2.2rem;border:0;border-radius:50%;background:#fff;color:#70737a;font-size:16px}
.curated-favorites-empty{padding:.65rem .15rem;color:var(--secondary);font-size:13px}

.source-subheading{margin-top:3rem;margin-bottom:.4rem}
.source-subheading h3{font-size:22px;margin:0}

@media(max-width:430px){
  .nav-shell{padding-left:.38rem!important;padding-right:.38rem!important}
  .nav-scroll{padding-left:10px!important;padding-right:10px!important}
  .nav-chip{padding:0 .92rem!important;font-size:14px!important}
  .nav-shell.is-compact .nav-chip{padding:0 .78rem!important;font-size:13px!important}
  .curated-head{align-items:flex-start;flex-direction:column}
  .curated-tools{width:100%;justify-content:flex-start}
}

@media(prefers-reduced-motion:reduce){
  .nav-glass::before,.nav-chip,.curated-card,.curated-card__visual img{transition:none!important}
}