/* ---------------------------------------------------------- hero */
.sv-hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 64px); align-items: center; min-height: calc(100svh - 69px); padding: clamp(40px, 6vh, 72px) 0; }
.sv-hero h1 { margin: 20px 0 0; color: var(--kz-strong); font-size: clamp(44px, 5.6vw, 92px); line-height: .95; letter-spacing: -.055em; text-wrap: balance; }
.sv-hero h1 em { color: var(--kz-accent); font-style: normal; }
.sv-hero-copy > p { max-width: 480px; margin: 26px 0 0; color: var(--kz-muted); font-size: 17px; line-height: 1.65; }
.sv-hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.sv-hero-stage { position: relative; aspect-ratio: 1 / 1; max-height: 72svh; width: 100%; justify-self: end; }
.sv-hero-stage::before { content: ""; position: absolute; inset: 12%; border-radius: 50%; background: radial-gradient(circle, color-mix(in srgb, var(--stage-accent, #5c93ff) 20%, transparent), transparent 68%); transition: background .8s ease; pointer-events: none; }
.sv-hero-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.sv-hero-caption { position: absolute; left: 50%; bottom: 6%; display: flex; align-items: baseline; gap: 12px; transform: translateX(-50%); white-space: nowrap; }
.sv-hero-caption b { color: var(--stage-accent, #5c93ff); font: 500 12px/1 "IBM Plex Mono", monospace; letter-spacing: .14em; transition: color .6s ease; }
.sv-hero-caption span { color: var(--kz-strong); font: 600 18px/1 "Space Grotesk", sans-serif; letter-spacing: -.02em; transition: opacity .3s ease; }
.sv-hero-caption.is-swapping span { opacity: 0; }
.sv-hero-dots { position: absolute; left: 50%; bottom: 0; display: flex; gap: 8px; transform: translateX(-50%); }
.sv-hero-dots button { width: 22px; height: 3px; padding: 0; border: 0; border-radius: 3px; background: var(--kz-border-strong); cursor: pointer; transition: width .35s ease, background .35s ease; }
.sv-hero-dots button.active { width: 40px; background: var(--stage-accent, #5c93ff); }

/* ---------------------------------------------------------- capability cards */
.sv-capabilities { padding: clamp(40px, 8vh, 96px) 0 0; scroll-margin-top: 60px; }
.sv-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-top: 44px; }
.sv-card { --mx: 50%; --my: 0%; position: relative; isolation: isolate; overflow: hidden; display: flex; flex-direction: column; min-height: 400px; padding: clamp(28px, 3vw, 40px); border: 1px solid var(--kz-border); border-radius: 26px; background: var(--kz-panel-strong); color: inherit; text-decoration: none; transition: opacity .7s ease, transform .5s cubic-bezier(.16,1,.3,1), border-color .35s ease; }
.sv-card::before { content: ""; position: absolute; z-index: -1; inset: 0; background: radial-gradient(480px circle at var(--mx) var(--my), color-mix(in srgb, var(--accent) 18%, transparent), transparent 60%); opacity: 0; transition: opacity .4s ease; }
.sv-card::after { content: ""; position: absolute; inset: 0 0 auto; height: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: .7; }
.sv-card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); transform: translateY(-5px); }
.sv-card:hover::before { opacity: 1; }
.sv-card--primary { grid-column: 1 / -1; min-height: 440px; background: radial-gradient(70% 120% at 100% 0%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 60%), var(--kz-panel-strong); }
.sv-card-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.sv-card-num { color: var(--accent); font: 500 11px/1 "IBM Plex Mono", monospace; letter-spacing: .14em; text-transform: uppercase; }
.sv-card-icon { width: 96px; height: 96px; color: var(--accent); opacity: .85; transition: transform .6s cubic-bezier(.16,1,.3,1), opacity .4s ease; }
.sv-card--primary .sv-card-icon { width: 150px; height: 150px; }
.sv-card-icon svg { width: 100%; height: 100%; overflow: visible; }
.sv-card:hover .sv-card-icon { opacity: 1; transform: scale(1.08) rotate(-4deg); }
.sv-card-icon .kz3-schematic-pulse { transform-origin: 60px 60px; animation: sv-pulse 2.6s ease-in-out infinite; }
@keyframes sv-pulse { 0%, 100% { transform: scale(1); opacity: .6; } 50% { transform: scale(1.18); opacity: .15; } }
.sv-card-body { margin-top: auto; padding-top: 28px; }
.sv-card h3 { margin: 0; color: var(--kz-strong); font-size: clamp(36px, 4vw, 58px); line-height: 1; letter-spacing: -.05em; }
.sv-card--primary h3 { font-size: clamp(44px, 5.4vw, 80px); }
.sv-card-body > p { max-width: 520px; margin: 16px 0 0; color: var(--kz-muted); font-size: 16px; line-height: 1.6; }
.sv-tools { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.sv-tools li { padding: 7px 12px; border: 1px solid var(--kz-border); border-radius: 99px; color: var(--kz-soft); font-size: 13px; transition: border-color .35s ease; }
.sv-card:hover .sv-tools li { border-color: color-mix(in srgb, var(--accent) 30%, transparent); }
.sv-card-foot { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-top: 26px; padding-top: 20px; border-top: 1px solid var(--kz-border); }
.sv-card-foot span { color: var(--kz-soft); font-size: 14px; }
.sv-card-foot small { display: block; margin-bottom: 6px; color: var(--kz-faint); font: 500 10px/1 "IBM Plex Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.sv-card-foot i { color: var(--accent); font-size: 14px; font-style: normal; font-weight: 600; white-space: nowrap; transition: transform .35s ease; }
.sv-card:hover .sv-card-foot i { transform: translate(3px, -3px); }
.sv-note { margin-top: 18px; }

/* ---------------------------------------------------------- routes */
.sv-route-track { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); margin: 52px 0 0; padding: 0; list-style: none; }
.sv-route-track::before { content: ""; position: absolute; left: 0; right: 0; top: 7px; height: 2px; background: linear-gradient(90deg, #d0ab62, #9588ff 50%, #5c93ff); opacity: .55; }
.sv-route-track li { position: relative; padding: 28px 0 0; color: var(--kz-faint); font: 500 11px/1 "IBM Plex Mono", monospace; letter-spacing: .16em; text-transform: uppercase; }
.sv-route-track li::before { content: ""; position: absolute; left: 0; top: 0; width: 16px; height: 16px; border: 2px solid #5c93ff; border-radius: 50%; background: var(--kz-bg); box-shadow: 0 0 14px rgba(92,147,255,.6); }
.sv-routes-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 18px; }
.sv-route { display: flex; flex-direction: column; padding: 30px 28px; border: 1px solid var(--kz-border); border-radius: 22px; background: var(--kz-panel); }
.sv-route-step { color: var(--kz-accent); font: 500 11px/1 "IBM Plex Mono", monospace; letter-spacing: .12em; text-transform: uppercase; }
.sv-route h3 { margin: 18px 0 0; color: var(--kz-strong); font-size: clamp(26px, 2.4vw, 34px); letter-spacing: -.04em; }
.sv-route p { margin: 12px 0 0; color: var(--kz-muted); font-size: 15px; line-height: 1.6; }
.sv-route-mix { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.sv-route-mix li { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 99px; color: var(--kz-soft); font-size: 13px; }
.sv-route-mix li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }
.sv-route small { margin-top: auto; padding-top: 22px; color: var(--kz-faint); font-size: 13px; }
.sv-routes-grid .sv-route:nth-child(2) { transition-delay: .08s; }
.sv-routes-grid .sv-route:nth-child(3) { transition-delay: .16s; }

/* ---------------------------------------------------------- faq */
.sv-faq { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.sv-faq-heading { position: sticky; top: 120px; }
.sv-faq-heading a { color: var(--kz-accent); }
.sv-faq-list { border-top: 1px solid var(--kz-border); }
.sv-faq-list details { border-bottom: 1px solid var(--kz-border); }
.sv-faq-list summary { position: relative; display: block; padding: 24px 48px 24px 0; color: var(--kz-strong); font: 600 clamp(18px, 1.6vw, 22px)/1.3 "Space Grotesk", sans-serif; letter-spacing: -.02em; cursor: pointer; list-style: none; transition: color .25s ease; }
.sv-faq-list summary::-webkit-details-marker { display: none; }
.sv-faq-list summary::before, .sv-faq-list summary::after { content: ""; position: absolute; right: 6px; top: 50%; width: 14px; height: 2px; border-radius: 2px; background: var(--kz-accent); transition: transform .35s ease; }
.sv-faq-list summary::after { transform: rotate(90deg); }
.sv-faq-list details[open] summary::after { transform: rotate(0deg); }
.sv-faq-list summary:hover { color: var(--kz-accent); }
.sv-faq-list details p { max-width: 620px; margin: 0; padding: 0 48px 26px 0; color: var(--kz-muted); font-size: 16px; line-height: 1.65; animation: sv-faq-open .4s ease; }
@keyframes sv-faq-open { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

.sv-cta-actions { justify-content: center; }
.kp-cta .sv-cta-actions .kz3-button { margin-top: 0; }

@media (max-width: 960px) {
  .sv-hero { grid-template-columns: 1fr; min-height: 0; }
  .sv-hero-stage { max-width: 520px; justify-self: center; }
  .sv-routes-grid, .sv-faq { grid-template-columns: 1fr; }
  .sv-route-track { display: none; }
  .sv-faq-heading { position: static; }
}

@media (max-width: 760px) {
  .sv-grid { grid-template-columns: 1fr; }
  .sv-card, .sv-card--primary { min-height: 0; }
  .sv-card-icon, .sv-card--primary .sv-card-icon { width: 72px; height: 72px; }
  .sv-card-foot { flex-direction: column; align-items: flex-start; }
}