:root {
    color-scheme: light;
    --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, system-ui, sans-serif;
    --font-mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
    --bg: #fff;
    --surface: #fff;
    --surface-2: #f5f5f6;
    --surface-3: #ececee;
    --line: #e4e4e7;
    --line-strong: #d4d4d8;
    --text: #3f3f46;
    --text-strong: #18181b;
    --muted: #71717a;
    --signal: #18181b;
    --signal-soft: rgb(24 24 27 / 6%);
    --signal-ink: #18181b;
    --ok: #1f9d55;
    --primary: #18181b;
    --primary-hover: #2f2f35;
    --on-primary: #fff;
    --radius: 8px;
    --shadow-lg: none;
}
.landing-hero-copy { min-width: 0; }

*, *::before, *::after { box-sizing: border-box; }
html { min-height: 100%; scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-ui);
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--signal-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 2px; border-radius: 4px; }
h1, h2, h3 { color: var(--text-strong); font-weight: 500; letter-spacing: -.03em; }
p { margin: 0 0 .75rem; }
code {
    padding: .1rem .35rem;
    border-radius: 5px;
    background: var(--surface-3);
    font-family: var(--font-mono);
    font-size: .88em;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    color: var(--text-strong);
    font-weight: 650;
    text-decoration: none;
}
.brand:hover { color: var(--text-strong); text-decoration: none; }
.brand-name { white-space: nowrap; }
.brand-mark {
    display: inline-flex;
    width: 1.65rem;
    height: 1.65rem;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: var(--primary);
    color: #fff;
}
.brand-mark svg { width: 1.1rem; height: 1.1rem; }
.btn {
    display: inline-flex;
    min-height: 2.55rem;
    align-items: center;
    justify-content: center;
    padding: .6rem 1rem;
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    background: var(--surface);
    color: var(--text-strong);
    font-weight: 500;
    text-decoration: none;
    transition: border-color .15s ease, background .15s ease;
}
.btn:hover {
    border-color: var(--text-strong);
    color: var(--text-strong);
    text-decoration: none;
}
.btn-primary { border-color: var(--primary); background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { border-color: var(--primary-hover); background: var(--primary-hover); color: var(--on-primary); }

.landing {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    background: var(--bg);
}
.landing-bar, .landing main, .landing-footer {
    position: relative;
    z-index: 1;
    width: min(1160px, calc(100% - 3rem));
    margin-inline: auto;
}
.landing-bar {
    display: flex;
    height: 4.25rem;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}
.landing-nav { display: flex; gap: 1.75rem; margin-left: auto; }
.landing-nav a { color: var(--text); font-size: .88rem; font-weight: 500; }
.landing-nav a:hover { color: var(--text-strong); }
.landing-hero {
    display: grid;
    min-height: 43rem;
    grid-template-columns: minmax(0, 1fr) minmax(24rem, .92fr);
    align-items: center;
    gap: clamp(3rem, 7vw, 7rem);
    padding: 5rem 0 6rem;
}
.landing-kicker, .landing-overline {
    margin: 0;
    color: var(--muted);
    font-size: .88rem;
    font-weight: 500;
}
.landing-kicker { display: flex; align-items: center; gap: .55rem; }
.landing-kicker-light { width: .5rem; height: .5rem; border-radius: 50%; background: var(--ok); }
.landing-hero h1 {
    max-width: 17ch;
    margin: 1.25rem 0;
    font-size: clamp(2.6rem, 4.6vw, 4.25rem);
    line-height: 1.02;
}
.landing-hero h1 span { display: block; }
.landing-hero-lede { max-width: 36rem; color: var(--text); font-size: 1.08rem; line-height: 1.65; }
.landing-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.landing-action span, .landing-sign-in span { display: none; }
.landing-proof {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem 1.2rem;
    margin: 2rem 0 0;
    padding: 0;
    color: var(--muted);
    font-size: .82rem;
    list-style: none;
}
.landing-proof li::before { margin-right: .4rem; color: var(--ok); content: "✓"; }

.hero-shot { position: relative; min-width: 0; margin: 0; }
.hero-shot img { display: block; width: 100%; height: auto; border: 1px solid var(--line); border-radius: var(--radius); }
@media (min-width: 901px) {
    .hero-shot { margin-right: calc(50% - 50vw); }
    .hero-shot img { width: calc(100% + 50vw - 50%); max-width: 62rem; }
}

.landing-strip {
    display: flex;
    justify-content: center;
    gap: 1rem;
    padding: 1rem;
    border-block: 1px solid var(--line);
    color: var(--muted);
    font-size: .82rem;
}
.landing-strip i { color: var(--line-strong); }
.landing-strip { font-size: .85rem; }
.landing-section { padding: 7rem 0; scroll-margin-top: 2rem; }
.landing-cta h2 { max-width: 18ch; margin: .6rem 0 0; font-size: clamp(1.8rem, 3vw, 2.5rem); line-height: 1.1; }
.system-card, .workflow-step, .control-card {
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}
.capability-top, .system-card-head { display: flex; align-items: center; justify-content: space-between; }
.capability-index, .workflow-number { color: var(--muted); font-family: var(--font-mono); font-size: .72rem; }
.workflow-step h3, .control-card h3 { margin: 1.75rem 0 .6rem; font-size: 1.05rem; }
.workflow-step p, .control-card p { color: var(--muted); }

.usecases-section { padding-top: 5rem; }
.usecases-heading { max-width: 36rem; margin-bottom: 3.5rem; }
.usecases-heading h2 { margin: 0 0 1rem; font-size: clamp(2rem, 3.6vw, 3rem); line-height: 1.05; }
.usecases-heading p { color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.usecase-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.usecase-col { display: grid; gap: 1.25rem; align-content: start; }
.usecase-card { display: flex; flex-direction: column; padding: 2rem 1.75rem 1.75rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.usecase-card.has-shot { padding-bottom: 0; }
.usecase-card h3 { margin: 0 0 1.25rem; font-size: 1.25rem; line-height: 1.25; }
.usecase-card ul { display: grid; gap: .6rem; margin: 0; padding: 0; list-style: none; }
.usecase-card li { display: flex; gap: .6rem; color: var(--text); font-size: .92rem; line-height: 1.5; }
.usecase-card li::before { color: var(--muted); content: "–"; }
.usecase-shot { position: relative; height: 15rem; margin: 2rem -1.75rem 0; overflow: hidden; border-radius: 0 0 var(--radius) var(--radius); }
.usecase-shot img { position: absolute; top: 0; left: 8%; width: 130%; height: auto; border: 1px solid var(--line-strong); border-radius: 6px; }
.usecase-card:nth-child(2) .usecase-shot img { left: 10%; }

.platform-summary {
    display: grid;
    grid-template-columns: .8fr 1.2fr;
    align-items: center;
    gap: clamp(2.5rem, 7vw, 6rem);
}
.platform-summary h2 { max-width: 18ch; margin: .6rem 0 1rem; font-size: clamp(1.8rem, 3vw, 2.5rem); line-height: 1.1; }
.controls-heading > p:last-child, .platform-summary-copy > p:last-child { color: var(--muted); font-size: 1.03rem; line-height: 1.7; }

.surfaces-section { margin-inline: calc(50% - 50vw); padding-inline: max(1.5rem, calc((100vw - 1160px) / 2)); background: var(--surface-2); }
.surfaces-heading { max-width: 40rem; margin: 0 auto 4rem; text-align: center; }
.surfaces-heading h2 { margin: .6rem 0 1rem; font-size: clamp(2rem, 3.6vw, 3rem); line-height: 1.05; }
.surfaces-heading > p:last-child { color: var(--muted); font-size: 1.03rem; line-height: 1.7; }
.surface-switch { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.surfaces-body { display: grid; grid-template-columns: .75fr 1.25fr; align-items: center; gap: clamp(2rem, 5vw, 4rem); }
.surface-list { display: grid; }
.surface-item {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    align-items: baseline;
    padding: 1.35rem 0;
    border-bottom: 1px solid var(--line-strong);
    cursor: pointer;
    transition: color .15s ease;
}
.surface-item:hover .surface-title { color: var(--muted); }
.surface-index { color: var(--muted); font-family: var(--font-mono); font-size: .72rem; }
.surface-title { color: var(--text-strong); font-size: clamp(1.3rem, 2vw, 1.7rem); font-weight: 500; letter-spacing: -.02em; line-height: 1.1; }
.surface-desc code { font-size: .85em; }
.surface-desc { display: none; grid-column: 2; margin-top: .9rem; color: var(--muted); font-size: .95rem; line-height: 1.6; }
.surface-stage {
    position: relative;
    aspect-ratio: 5 / 4;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: linear-gradient(180deg, #ececee, #d9d9de);
}
.surface-shot { position: absolute; inset: 0; display: none; margin: 0; }
.surface-shot img { position: absolute; top: 12%; left: 14%; width: 118%; height: auto; border-radius: 6px; }
.surface-shot img.surface-phone { top: 8%; left: 33%; width: 34%; border: 6px solid #1f1f23; border-radius: 40px; }
#surface-macos:checked ~ .surfaces-body .surface-item.is-macos .surface-desc,
#surface-linux:checked ~ .surfaces-body .surface-item.is-linux .surface-desc,
#surface-web:checked ~ .surfaces-body .surface-item.is-web .surface-desc,
#surface-ios:checked ~ .surfaces-body .surface-item.is-ios .surface-desc,
#surface-cli:checked ~ .surfaces-body .surface-item.is-cli .surface-desc { display: block; }
#surface-macos:checked ~ .surfaces-body .surface-shot.is-macos,
#surface-linux:checked ~ .surfaces-body .surface-shot.is-linux,
#surface-web:checked ~ .surfaces-body .surface-shot.is-web,
#surface-ios:checked ~ .surfaces-body .surface-shot.is-ios,
#surface-cli:checked ~ .surfaces-body .surface-shot.is-cli { display: block; }
.surface-switch:focus-visible ~ .surfaces-body .surface-list { outline: 2px solid var(--text-strong); outline-offset: 6px; border-radius: 4px; }

.controls-section { margin-top: 5rem; padding: clamp(2rem, 5vw, 4rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.controls-heading { display: grid; grid-template-columns: 1fr .85fr; align-items: end; gap: 3rem; margin-bottom: 3rem; }
.controls-heading h2 { color: var(--text-strong); }
.controls-heading .landing-overline { grid-column: 1 / -1; margin-bottom: -2rem; }
.controls-heading > p:last-child { color: var(--text); }
.control-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; }
.control-card { min-height: 12rem; }
.control-card p { color: var(--muted); font-size: .88rem; }
.control-index { color: var(--muted); font-family: var(--font-mono); font-size: .7rem; }

.system-card { display: grid; gap: .8rem; }
.system-row { display: flex; justify-content: space-between; gap: 1rem; padding: .75rem; border-radius: 6px; background: var(--surface-2); font-size: .8rem; }
.system-row > span { color: var(--text-strong); font-family: var(--font-mono); }
.system-row small { color: var(--muted); }
.system-card-foot { display: flex; flex-wrap: wrap; gap: .75rem; color: var(--muted); font-size: .7rem; }
.system-card-foot i { display: inline-block; width: .4rem; height: .4rem; margin-right: .3rem; border-radius: 50%; background: var(--ok); }
.landing-workflow { padding-top: 2rem; }
.workflow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.workflow-step { position: relative; min-height: 15rem; }
.workflow-socket { display: none; }
.rollout-principle { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1rem; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); color: var(--muted); font-size: .8rem; }
.rollout-principle i { color: var(--line-strong); font-style: normal; }
.platform-summary { padding-top: 3rem; }
.landing-cta {
    margin-bottom: 5rem;
    padding: clamp(2rem, 5vw, 4rem);
    border-radius: var(--radius);
    background: var(--primary);
    color: rgb(255 255 255 / 72%);
}
.landing-cta h2 { color: #fff; }
.landing-cta .landing-overline { color: rgb(255 255 255 / 55%); }
.landing-cta .btn:not(.btn-primary) { border-color: rgb(255 255 255 / 28%); background: transparent; color: #fff; }
.landing-cta .btn-primary { border-color: #fff; background: #fff; color: var(--text-strong); }
.landing-cta .btn-primary:hover { border-color: #e8e8ec; background: #e8e8ec; color: var(--text-strong); }
.landing-footer-links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.product main { padding-bottom: 5rem; }
.product-hero { max-width: 48rem; padding: 5rem 0 4rem; }
.product-hero h1 { max-width: 24ch; margin: 1.25rem 0; font-size: clamp(2.4rem, 4.4vw, 4rem); line-height: 1.02; }
.product-hero h1 span { display: block; }
.product-lede { max-width: 38rem; color: var(--text); font-size: 1.08rem; line-height: 1.65; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.feature-card { position: relative; padding: 1.75rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.feature-index { display: none; }
.feature-card h3 { margin: 0 0 .6rem; font-size: 1.15rem; line-height: 1.25; }
.feature-card p { color: var(--muted); font-size: .95rem; line-height: 1.6; }
.feature-card ul { display: grid; gap: .5rem; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.feature-card li { display: flex; gap: .5rem; color: var(--text-strong); font-size: .88rem; line-height: 1.5; }
.feature-card li::before { color: var(--muted); content: "–"; }
.product-specs { margin-top: 4rem; padding: clamp(1.75rem, 4vw, 3rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2); }
.product-specs h2 { margin: 0 0 1.5rem; font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.1; }
.product-specs dl { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem 3rem; margin: 0; }
.product-spec { display: grid; gap: .3rem; padding-bottom: 1rem; border-bottom: 1px solid var(--line-strong); }
.product-spec dt { color: var(--muted); font-size: .85rem; font-weight: 500; }
.product-spec dd { margin: 0; color: var(--text-strong); font-family: var(--font-mono); font-size: .82rem; line-height: 1.6; overflow-wrap: anywhere; }
.product .landing-cta { margin-top: 5rem; }
.legal main { padding-bottom: 5rem; }
.legal-hero { max-width: 44rem; margin: 0 auto; padding: 5rem 0 3rem; text-align: center; }
.legal-hero .landing-kicker { justify-content: center; }
.legal-hero h1 { margin: 1.25rem 0; font-size: clamp(2.4rem, 4.4vw, 3.75rem); line-height: 1.02; }
.legal-hero h1 span { display: block; margin-top: .35rem; color: var(--muted); font-size: .55em; font-weight: 400; }
.legal-lede { color: var(--muted); font-size: 1.1rem; line-height: 1.7; }
.legal-provider { display: grid; grid-template-columns: 1.05fr .95fr; gap: 1.5rem; align-items: stretch; margin-top: 2rem; }
.legal-card, .legal-office { padding: clamp(1.5rem, 3vw, 2.5rem); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.legal-card h2 { margin: .6rem 0 1.5rem; font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.1; }
.legal-details { display: grid; gap: 1.1rem; margin: 0; }
.legal-detail { display: grid; grid-template-columns: 10rem 1fr; gap: .25rem 1rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); }
.legal-detail:last-child { padding-bottom: 0; border-bottom: 0; }
.legal-detail dt { color: var(--muted); font-size: .85rem; font-weight: 500; }
.legal-detail dd { display: grid; margin: 0; color: var(--text-strong); font-size: .98rem; line-height: 1.6; }
.legal-card .landing-actions { margin-top: 2rem; }
.legal-office { display: flex; flex-direction: column; gap: 1.25rem; background: var(--surface-2); }
.legal-office-photo { flex: none; width: 100%; aspect-ratio: 1; overflow: hidden; border: 1px solid var(--line); border-radius: 6px; }
.legal-office-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
.legal-office-address { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: auto; padding: 1rem 1.1rem; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.legal-office-address strong, .legal-office-address small { display: block; }
.legal-office-address strong { color: var(--text-strong); font-size: .92rem; }
.legal-office-address small { color: var(--muted); font-size: .8rem; }
.legal-office-address .btn { min-height: 2.2rem; padding: .4rem .8rem; font-size: .8rem; white-space: nowrap; }
.legal-contact { display: grid; grid-template-columns: 1fr auto; gap: 2rem; align-items: center; margin: 5rem 0 0; }
.legal-contact h2 { max-width: 20ch; margin: .6rem 0 .75rem; font-size: clamp(1.5rem, 2.5vw, 2rem); line-height: 1.1; }
.legal-contact .landing-actions { flex-direction: column; margin-top: 0; }
.landing-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 2rem 0 3rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: .8rem;
}

@media (max-width: 900px) {
    .feature-grid { grid-template-columns: 1fr; }
    .product-specs dl { grid-template-columns: 1fr; }
    .legal-provider, .legal-contact { grid-template-columns: 1fr; }
    .legal-contact .landing-actions { flex-direction: row; }
    .legal-detail { grid-template-columns: 1fr; }
    .landing-hero { grid-template-columns: 1fr; padding-top: 3rem; }
    .landing-hero h1 { max-width: 16ch; }
    .control-grid { grid-template-columns: repeat(2, 1fr); }
    .platform-summary { grid-template-columns: 1fr; }\n    .surfaces-body { grid-template-columns: 1fr; }\n    .surface-stage { aspect-ratio: 4 / 3; }
}

@media (max-width: 680px) {
    .landing-bar, .landing main, .landing-footer { width: min(100% - 2rem, 1160px); }
    .landing-bar { height: 4.5rem; }
    .landing-nav { display: none; }
    .landing-sign-in { padding-inline: .75rem; font-size: .82rem; }
    .landing-hero { min-height: auto; padding: 3rem 0 4rem; gap: 3rem; }
    .landing-hero h1 { font-size: clamp(2.75rem, 14vw, 4.25rem); }
    .landing-strip { flex-wrap: wrap; }
    .landing-strip i { display: none; }
    .landing-section { padding: 4.5rem 0; }
    .usecase-grid, .control-grid, .workflow-grid, .controls-heading { grid-template-columns: 1fr; }
    .control-card, .workflow-step { min-height: auto; }
    .surfaces-section { margin-inline: calc(50% - 50vw); padding-inline: 1rem; }\n    .surfaces-heading { margin-bottom: 2.5rem; text-align: left; }
    .controls-section { margin-top: 2rem; padding: 2rem 1.25rem; }
    .controls-heading { gap: 1rem; }
    .controls-heading .landing-overline { grid-column: auto; margin-bottom: 0; }
    .rollout-principle { align-items: flex-start; flex-direction: column; }
    .rollout-principle i { transform: rotate(90deg); }
    .system-row { align-items: flex-start; flex-wrap: wrap; }
    .landing-footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: .01ms !important; }
}