/* Smartteller Phase 5 — audience/use-case system */
.usecase-hero{position:relative;overflow:hidden;padding:clamp(4.5rem,8vw,8rem) 0 clamp(3.5rem,6vw,6rem);background:linear-gradient(145deg,var(--st-bg,#f7fbf6) 0%,#fff 46%,rgba(74,161,88,.08) 100%);border-bottom:1px solid var(--st-border,rgba(20,45,28,.12))}
.usecase-hero:before{content:"";position:absolute;inline-size:34rem;block-size:34rem;border-radius:50%;right:-13rem;top:-16rem;background:radial-gradient(circle,rgba(76,165,92,.18),transparent 68%);pointer-events:none}
.usecase-hero__grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(20rem,.98fr);gap:clamp(2.5rem,6vw,6rem);align-items:center}
.usecase-hero__copy{max-width:46rem}.usecase-eyebrow{display:inline-flex;align-items:center;gap:.55rem;margin:0 0 1.25rem;font-size:.82rem;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:var(--st-primary,#286f38)}
.usecase-eyebrow:before{content:"";width:.65rem;height:.65rem;border-radius:50%;background:currentColor;box-shadow:0 0 0 .32rem rgba(47,126,64,.10)}
.usecase-hero h1{font-size:clamp(2.55rem,5vw,5.15rem);line-height:.98;letter-spacing:-.045em;max-width:13ch;margin:0;color:var(--st-text,#132219)}
.usecase-lead{font-size:clamp(1.08rem,1.7vw,1.32rem);line-height:1.65;max-width:42rem;margin:1.55rem 0 0;color:var(--st-muted,#526158)}
.usecase-signals{list-style:none;padding:0;margin:1.65rem 0 0;display:grid;gap:.65rem}.usecase-signals li{display:flex;gap:.72rem;align-items:flex-start;font-weight:650;color:var(--st-text,#132219)}.usecase-signals li:before{content:"✓";display:grid;place-items:center;flex:0 0 1.35rem;height:1.35rem;border-radius:50%;background:rgba(47,126,64,.12);color:var(--st-primary,#286f38);font-size:.76rem;margin-top:.12rem}
.usecase-actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}.usecase-note{margin:1rem 0 0;font-size:.88rem;color:var(--st-muted,#526158)}
.usecase-hero__visual{position:relative;min-width:0}.usecase-device{position:relative;border-radius:clamp(1.5rem,3vw,2.7rem);padding:clamp(.65rem,1.2vw,1rem);background:linear-gradient(160deg,#163321,#0d1f14);box-shadow:0 2rem 5rem rgba(14,47,25,.18);transform:rotate(1.5deg)}.usecase-device:after{content:"";position:absolute;inset:.55rem;border:1px solid rgba(255,255,255,.14);border-radius:inherit;pointer-events:none}.usecase-device img{display:block;width:100%;height:auto;aspect-ratio:1.42/1;object-fit:cover;object-position:top;border-radius:calc(clamp(1.5rem,3vw,2.7rem) - .65rem);background:#eef5ef}
.usecase-flow{list-style:none;padding:0;margin:1rem 0 0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.55rem}.usecase-flow li{padding:.8rem .75rem;border:1px solid var(--st-border,rgba(20,45,28,.12));border-radius:var(--st-radius-md,16px);background:rgba(255,255,255,.88);box-shadow:0 .6rem 1.8rem rgba(18,52,28,.06)}.usecase-flow span{display:block;font-size:.68rem;font-weight:800;letter-spacing:.08em;color:var(--st-primary,#286f38);margin-bottom:.2rem}.usecase-flow strong{font-size:.8rem;line-height:1.3;color:var(--st-text,#132219)}
.usecase-switcher{padding:clamp(3.5rem,6vw,6rem) 0;background:#fff}.usecase-switcher__head{max-width:48rem;margin-bottom:1.8rem}.usecase-switcher__head h2{max-width:18ch}.usecase-switcher__head>p:last-child{color:var(--st-muted,#526158);max-width:44rem}
.usecase-switcher__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.85rem}.usecase-switcher__card{display:flex;min-height:8.75rem;flex-direction:column;justify-content:space-between;gap:1.2rem;padding:1.15rem;border:1px solid var(--st-border,rgba(20,45,28,.12));border-radius:var(--st-radius-lg,22px);background:var(--st-surface,#fff);text-decoration:none;color:var(--st-text,#132219);transition:transform var(--st-motion-fast,180ms) ease,border-color var(--st-motion-fast,180ms) ease,box-shadow var(--st-motion-fast,180ms) ease}.usecase-switcher__card strong{font-size:1rem}.usecase-switcher__card span{font-size:.88rem;line-height:1.45;color:var(--st-muted,#526158)}.usecase-switcher__card:hover{transform:translateY(-3px);border-color:rgba(47,126,64,.32);box-shadow:0 1rem 2rem rgba(20,55,30,.08)}.usecase-switcher__card.is-active{background:rgba(47,126,64,.07);border-color:rgba(47,126,64,.35)}
@media(max-width:960px){.usecase-hero__grid{grid-template-columns:1fr}.usecase-hero h1{max-width:16ch}.usecase-hero__visual{max-width:46rem}.usecase-switcher__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:620px){.usecase-hero{padding-top:3.5rem}.usecase-actions{display:grid}.usecase-actions .btn{width:100%;justify-content:center}.usecase-flow{grid-template-columns:repeat(2,minmax(0,1fr))}.usecase-switcher__grid{grid-template-columns:1fr}.usecase-switcher__card{min-height:6.5rem}}
@media(prefers-reduced-motion:reduce){.usecase-switcher__card{transition:none}.usecase-device{transform:none}}