/* ═══════════════════════════════════════════════════════════════════
   LineKeeper — marketing site. Self-contained: local fonts, no CDN.
   Light "Antigravity" theme: white canvas, huge grotesk display type,
   pill buttons, black rounded showcase cards with the dark product UI
   inside. Space Grotesk (display) / DM Sans (body) / IBM Plex Mono.
   ═══════════════════════════════════════════════════════════════════ */

/* ── Fonts (local, variable) ── */
@font-face { font-family:'Space Grotesk'; font-weight:300 700; font-display:swap; src:url(assets/fonts/space-grotesk-var-latin.woff2) format('woff2-variations'); }
@font-face { font-family:'DM Sans'; font-weight:100 1000; font-display:swap; src:url(assets/fonts/dm-sans-var-latin.woff2) format('woff2-variations'); }
@font-face { font-family:'IBM Plex Mono'; font-weight:400; font-display:swap; src:url(assets/fonts/ibm-plex-mono-400-latin.woff2) format('woff2'); }
@font-face { font-family:'IBM Plex Mono'; font-weight:500; font-display:swap; src:url(assets/fonts/ibm-plex-mono-500-latin.woff2) format('woff2'); }

/* ── Tokens ── */
:root {
    /* light page */
    --bg:        #ffffff;
    --ink:       #121317;
    --ink-2:     #45474d;
    --muted:     #77797f;
    --line:      rgba(18,19,23,.09);
    --line-2:    rgba(18,19,23,.16);
    --surface:   #f6f7f8;
    --surface-2: #eff1f3;
    /* black showcase cards */
    --card-ink:  #0a0b0d;
    /* functional */
    --accent:    #2e6be6;
    --accent-2:  #4d8dff;
    --ok:        #1ea966;
    --ok-dark:   #36c98b;   /* ok on dark cards */
    --warn:      #f5a623;
    --bad:       #e5484d;
    --font:      'DM Sans', system-ui, -apple-system, sans-serif;
    --display:   'Space Grotesk', 'DM Sans', system-ui, sans-serif;
    --mono:      'IBM Plex Mono', ui-monospace, 'SF Mono', monospace;
    --r:         16px;
    --r-lg:      24px;
    --r-xl:      32px;
    --shadow:    0 30px 80px rgba(18,19,23,.12);
    --wrap:      1200px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
    background:var(--bg);
    color:var(--ink);
    font-family:var(--font);
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
}
img, svg, canvas { max-width:100%; display:block; }
a { color:var(--ink); text-decoration:none; }
b, strong { font-weight:600; color:var(--ink); }
em { font-style:normal; }

.wrap { max-width:var(--wrap); margin:0 auto; padding:0 24px; }
.wrap-narrow { max-width:840px; }

/* ── Type scale ── */
h1 {
    font-family:var(--display);
    font-size:clamp(42px, 6.4vw, 78px);
    line-height:1.04; font-weight:500; letter-spacing:-.025em;
}
h1 em { color:var(--muted); }
h2 {
    font-family:var(--display);
    font-size:clamp(30px, 4vw, 46px);
    line-height:1.1; font-weight:500; letter-spacing:-.02em;
}
h3 { font-family:var(--display); font-size:22px; font-weight:500; letter-spacing:-.01em; }
.eyebrow {
    display:inline-block;
    font-size:13px; font-weight:500; color:var(--ink-2);
    border:1px solid var(--line-2); border-radius:100px;
    padding:5px 14px; margin-bottom:18px; background:var(--bg);
}
.sec-head { max-width:680px; margin-bottom:56px; }
.sec-head h2 { margin-bottom:10px; }
.mono { font-family:var(--mono); }

/* ── Buttons (pills) ── */
.btn {
    display:inline-flex; align-items:center; justify-content:center; gap:8px;
    min-height:52px; padding:0 30px; border-radius:100px;
    font-family:var(--font); font-size:15.5px; font-weight:500;
    border:1px solid transparent; cursor:pointer;
    transition:background-color .18s ease, transform .18s ease, box-shadow .18s ease;
    white-space:nowrap;
}
.btn-primary { background:var(--ink); color:#fff; }
.btn-primary:hover { background:#2b2c31; transform:translateY(-1px); box-shadow:0 10px 26px rgba(18,19,23,.22); }
.btn-ghost { background:var(--surface); color:var(--ink); }
.btn-ghost:hover { background:var(--surface-2); }
.btn-sm { min-height:42px; padding:0 20px; font-size:14px; }
.btn-wide { width:100%; }
.btn:focus-visible { outline:2px solid var(--ink); outline-offset:3px; }
a:focus-visible, summary:focus-visible { outline:2px solid var(--ink); outline-offset:3px; border-radius:4px; }

/* ═══════════ NAV ═══════════ */
.nav {
    position:sticky; top:0; z-index:100;
    background:rgba(255,255,255,.82);
    backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
}
.nav-inner { display:flex; align-items:center; justify-content:space-between; height:68px; gap:24px; }
.brand { display:flex; align-items:center; gap:10px; color:var(--ink); font-size:19px; font-weight:400; letter-spacing:-.01em; font-family:var(--display); }
.brand b { font-weight:600; }
.brand-glyph { width:28px; height:28px; color:var(--ink); }
.brand-glyph polyline {
    stroke-dasharray:34 12;
    animation:logo-signal 5s linear infinite;
}
@keyframes logo-signal {
    from { stroke-dashoffset:0; }
    to   { stroke-dashoffset:-92; }
}
.brand.small { font-size:17px; }
.nav-links { display:flex; gap:28px; }
.nav-links a { color:var(--ink-2); font-size:14.5px; font-weight:500; transition:color .15s; }
.nav-links a:hover { color:var(--ink); }
.nav-cta { display:flex; align-items:center; gap:12px; }
.nav-burger { display:none; flex-direction:column; gap:5px; background:none; border:none; padding:8px; cursor:pointer; }
.nav-burger span { width:22px; height:2px; background:var(--ink); border-radius:2px; }

/* ═══════════ HERO ═══════════ */
.hero { position:relative; padding:104px 0 96px; overflow:hidden; }
.hero-dots { position:absolute; inset:0; pointer-events:none; }
.hero-dots canvas { width:100%; height:100%; }
.hero-inner { position:relative; display:flex; flex-direction:column; align-items:center; gap:64px; }
.hero-copy { display:flex; flex-direction:column; align-items:center; text-align:center; max-width:880px; }
.hero-sub { color:var(--ink-2); font-size:18px; max-width:620px; margin:22px 0 32px; }
.hero-cta { display:flex; gap:12px; flex-wrap:wrap; justify-content:center; margin-bottom:24px; }
.hero-price { display:flex; align-items:baseline; gap:10px; justify-content:center; }
.price-num { font-family:var(--display); font-size:26px; font-weight:600; letter-spacing:-.02em; }
.price-note { font-size:13.5px; color:var(--muted); line-height:1.45; }
.hero-trust {
    list-style:none; display:flex; gap:10px 28px; flex-wrap:wrap; justify-content:center;
    margin-top:28px;
}
.hero-trust li { color:var(--ink-2); font-size:14px; padding-left:22px; position:relative; }
.hero-trust li::before { content:'✓'; position:absolute; left:0; color:var(--ok); font-weight:700; }

/* ── Device showcase: black rounded card, product UI inside ── */
.hero-device { width:100%; display:flex; flex-direction:column; align-items:center; }
.device {
    width:min(880px, 100%);
    background:
        radial-gradient(120% 90% at 50% -20%, rgba(77,141,255,.22) 0%, transparent 55%),
        var(--card-ink);
    border-radius:var(--r-xl);
    padding:clamp(20px, 4vw, 44px);
    box-shadow:var(--shadow);
}
.device-screen {
    background:#0c0f14;
    border:1px solid #262b34;
    border-radius:18px;
    overflow:hidden;
}
.device-foot { display:none; }

/* ── Dark product-UI mockups (scoped dark tokens) ── */
.mock, .device-screen {
    --m-bg:     #0c0f14;
    --m-panel:  #151922;
    --m-panel2: #10151d;
    --m-border: #242a35;
    --m-text:   #e7eaf0;
    --m-text2:  #9aa3b2;
    --m-muted:  #6b7688;
    color:var(--m-text);
}
.mock b, .device-screen b { color:var(--m-text); }

.mock-topbar {
    display:flex; align-items:center; justify-content:space-between;
    padding:10px 14px; border-bottom:1px solid var(--m-border);
    background:var(--m-panel2);
    font-family:var(--mono); font-size:11.5px; color:var(--m-text2);
}
.mock-conn { display:flex; align-items:center; gap:6px; color:var(--ok-dark); }
.mock-conn i { width:7px; height:7px; border-radius:50%; background:var(--ok-dark); box-shadow:0 0 8px var(--ok-dark); }
.mock-body { padding:12px; display:flex; flex-direction:column; gap:10px; background:var(--m-bg); }
.mock-chart-card { background:var(--m-panel); border:1px solid var(--m-border); border-radius:12px; padding:10px 12px; }
.mock-chart-card.tall { padding-bottom:6px; }
.mock-card-title { font-size:12px; font-weight:600; margin-bottom:6px; color:var(--m-text); }
.mock-card-title span { color:var(--m-muted); font-weight:400; font-family:var(--mono); font-size:10.5px; margin-left:6px; }
.mock-tiles { display:grid; grid-template-columns:repeat(3, 1fr); gap:8px; }
.mock-tile { background:var(--m-panel); border:1px solid var(--m-border); border-radius:12px; padding:8px 10px; }
.mock-tile span { display:block; font-size:10px; color:var(--m-muted); text-transform:uppercase; letter-spacing:.06em; }
.mock-tile b { font-size:17px; font-weight:700; font-family:var(--mono); color:var(--m-text); }
.mock-tile.warn b { color:var(--warn); }
.mock-controls { display:flex; gap:8px; flex-wrap:wrap; }
.mock-btn {
    flex:1; min-width:70px; display:flex; align-items:center; justify-content:center; gap:6px;
    padding:10px 8px; border-radius:100px; font-weight:700; font-size:12.5px; letter-spacing:.04em;
}
.mock-btn i { font-style:normal; font-size:10px; }
.mock-btn.run  { background:rgba(54,201,139,.14); color:var(--ok-dark); border:1px solid rgba(54,201,139,.35); }
.mock-btn.stop { background:rgba(239,90,98,.12); color:#ef5a62; border:1px solid rgba(239,90,98,.35); }
.mock-btn.big { padding:16px 10px; font-size:14px; }
.mock-ind {
    flex:1; min-width:64px; text-align:center; padding:10px 8px; border-radius:100px;
    font-size:12px; font-weight:600; color:var(--m-muted);
    background:var(--m-panel); border:1px solid var(--m-border);
}
.mock-ind.on { color:var(--ok-dark); border-color:rgba(54,201,139,.4); background:rgba(54,201,139,.09); }
.mock-ind.big { padding:16px 8px; font-size:13px; }

/* ═══════════ PROBLEM / SOLUTION ═══════════ */
.problem { padding:48px 0 96px; }
.split { display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.split-col {
    border-radius:var(--r-lg); padding:40px 38px;
    background:var(--surface);
}
.split-col.good { background:linear-gradient(160deg, rgba(46,107,230,.08), rgba(46,107,230,.015) 55%), var(--surface); }
.split-col h2 { font-size:clamp(22px, 2.5vw, 30px); margin:16px 0 22px; }
.split-badge {
    display:inline-block; font-size:12.5px; font-weight:500;
    padding:5px 14px; border-radius:100px;
    color:var(--bad); background:rgba(229,72,77,.08); border:1px solid rgba(229,72,77,.25);
}
.split-badge.ok { color:var(--ok); background:rgba(30,169,102,.08); border-color:rgba(30,169,102,.25); }
.x-list, .ok-list { list-style:none; display:flex; flex-direction:column; gap:12px; }
.x-list li, .ok-list li { color:var(--ink-2); font-size:15.5px; padding-left:28px; position:relative; }
.x-list li::before { content:'✕'; position:absolute; left:0; color:var(--bad); font-weight:700; }
.ok-list li::before { content:'✓'; position:absolute; left:0; color:var(--ok); font-weight:700; }
.problem-note {
    margin-top:24px; padding:20px 24px; border-radius:var(--r);
    border:1px dashed var(--line-2);
    color:var(--ink-2); font-size:14.5px; max-width:880px;
}

/* ═══════════ TOUR ═══════════ */
.tour { padding:72px 0 40px; border-top:1px solid var(--line); }
.feature {
    display:grid; grid-template-columns:1fr 1.1fr; gap:64px; align-items:center;
    padding:52px 0;
}
.feature.flip .feature-copy { order:2; }
.feature.flip .feature-visual { order:1; }
.feature-num { font-family:var(--mono); font-size:13px; color:var(--muted); margin-bottom:12px; }
.feature-copy h3 { font-size:clamp(24px, 2.8vw, 32px); margin-bottom:14px; }
.feature-copy p { color:var(--ink-2); margin-bottom:18px; }
.feature-copy ul { list-style:none; display:flex; flex-direction:column; gap:9px; }
.feature-copy li { color:var(--ink-2); font-size:14.5px; padding-left:22px; position:relative; }
.feature-copy li::before { content:'—'; position:absolute; left:0; color:var(--muted); }

/* black showcase card around each product mockup */
.mock {
    background:var(--card-ink);
    border-radius:var(--r-lg);
    overflow:hidden; box-shadow:var(--shadow);
}
.mock-head {
    display:flex; align-items:center; justify-content:space-between;
    padding:13px 18px; border-bottom:1px solid var(--m-border);
    font-size:13px; font-weight:600; background:var(--m-panel2); color:var(--m-text);
}
.mock-chip {
    font-family:var(--mono); font-size:10.5px; font-weight:500; color:var(--accent-2);
    background:rgba(77,141,255,.12); border:1px solid rgba(77,141,255,.3);
    padding:3px 10px; border-radius:100px;
}
.mock-ctrl-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:10px; padding:18px; background:var(--m-bg); }
.mock-setpoint {
    grid-column:span 1; display:flex; align-items:center; justify-content:space-between; gap:6px;
    background:var(--m-panel); border:1px solid var(--m-border); border-radius:12px; padding:10px 12px;
}
.mock-setpoint span { font-size:10px; color:var(--m-muted); text-transform:uppercase; }
.mock-setpoint b { font-family:var(--mono); font-size:15px; color:var(--m-text); }
.mock-setpoint i { font-style:normal; color:var(--accent-2); font-size:11px; }
.mock-dash { padding:14px; display:flex; flex-direction:column; gap:10px; background:var(--m-bg); }
.mock-svg-chart { width:100%; height:110px; }
.mock-svg-chart polyline { fill:none; stroke:var(--accent-2); stroke-width:2.5; stroke-linejoin:round; }
.mock-svg-chart .thr { stroke:var(--warn); stroke-width:1; stroke-dasharray:5 5; opacity:.7; }
.mock-table { width:100%; border-collapse:collapse; font-size:12.5px; background:var(--m-bg); }
.mock-table td { padding:9px 18px; border-bottom:1px solid var(--m-border); color:var(--m-text2); }
.mock-table td:first-child { color:var(--m-text); }
.mock-table .v { font-family:var(--mono); text-align:right; }
.mock-table .v.on { color:var(--ok-dark); font-weight:600; }
.mock-table tr.dim { opacity:.55; }
.mock-bits { padding:12px 18px 18px; font-size:11px; color:var(--m-muted); background:var(--m-bg); }
.mock-bits .bits { display:flex; gap:5px; margin-top:7px; }
.mock-bits .bits i {
    font-style:normal; font-family:var(--mono); font-size:10.5px;
    width:26px; height:26px; display:flex; align-items:center; justify-content:center;
    border-radius:8px; background:var(--m-panel); border:1px solid var(--m-border); color:var(--m-muted);
}
.mock-bits .bits i.on { color:#06101f; background:var(--ok-dark); border-color:var(--ok-dark); font-weight:700; }
.mock-remote { padding:18px; display:flex; flex-direction:column; gap:10px; font-size:13.5px; color:var(--m-text2); background:var(--m-bg); }
.mock-row { display:flex; align-items:center; gap:9px; flex-wrap:wrap; }
.mock-row .dot { width:8px; height:8px; border-radius:50%; background:var(--m-muted); flex-shrink:0; }
.mock-row .dot.ok { background:var(--ok-dark); box-shadow:0 0 8px var(--ok-dark); }
.mock-terminal {
    margin-top:4px; background:#080b0f; border:1px solid var(--m-border); border-radius:12px;
    padding:12px 14px; font-size:11.5px; color:var(--ok-dark);
    display:flex; flex-direction:column; gap:4px;
}
.mock-terminal em { color:var(--m-muted); }

/* ═══════════ SCREENS — real UI gallery ═══════════ */
.screens { padding:88px 0 96px; border-top:1px solid var(--line); }
.screens-sub { color:var(--ink-2); font-size:15.5px; max-width:640px; margin-top:12px; }
.shots-grid { display:grid; grid-template-columns:1fr 1fr; gap:24px 20px; }
.shot { margin:0; min-width:0; }
.shot.wide { grid-column:1 / -1; }
.shot-btn {
    display:block; width:100%; padding:0; border:0; background:none;
    cursor:zoom-in; border-radius:var(--r-lg);
}
.shot-btn:focus-visible { outline:2px solid var(--ink); outline-offset:4px; }
.shot img {
    width:100%; height:auto; display:block;
    border-radius:var(--r-lg); background:var(--card-ink);
    border:1px solid rgba(18,19,23,.12);
    box-shadow:var(--shadow);
}
.shot figcaption { margin-top:12px; font-size:13.5px; color:var(--muted); }
.shot figcaption b { color:var(--ink-2); font-weight:600; }

/* lightbox */
.lightbox {
    position:fixed; inset:0; z-index:300;
    background:rgba(10,11,13,.93);
    display:none; align-items:center; justify-content:center;
    padding:clamp(16px, 4vw, 48px); cursor:zoom-out;
}
.lightbox.open { display:flex; }
.lightbox img {
    max-width:100%; max-height:100%; width:auto; height:auto;
    border-radius:14px; box-shadow:0 40px 120px rgba(0,0,0,.6);
}

/* ═══════════ HARDWARE ═══════════ */
.hardware { padding:96px 0; border-top:1px solid var(--line); }
.hw-grid { display:grid; grid-template-columns:1.15fr .85fr; gap:20px; align-items:stretch; }
.hw-side { display:flex; flex-direction:column; gap:20px; min-width:0; }
.hw-photo {
    margin:0; position:relative; overflow:hidden;
    border-radius:var(--r-lg); background:var(--surface-2);
    box-shadow:var(--shadow); min-width:0;
}
.hw-photo img { width:100%; height:100%; object-fit:cover; display:block; }
.hw-photo figcaption {
    position:absolute; left:14px; bottom:14px; max-width:calc(100% - 28px);
    font-size:12.5px; font-weight:500; color:var(--ink);
    background:rgba(255,255,255,.86);
    -webkit-backdrop-filter:blur(8px); backdrop-filter:blur(8px);
    padding:7px 14px; border-radius:100px;
}
.hw-sub { color:var(--ink-2); font-size:15.5px; margin-top:12px; }
.hw-duo { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-top:20px; }
.hw-duo img { aspect-ratio:3 / 2; }
.hw-list {
    list-style:none; flex:1;
    background:var(--surface); border-radius:var(--r-lg);
    padding:26px 28px; display:flex; flex-direction:column; gap:11px; justify-content:center;
}
.hw-list li { color:var(--ink-2); font-size:14.5px; padding-left:24px; position:relative; }
.hw-list li::before { content:'✓'; position:absolute; left:0; color:var(--ok); font-weight:700; }
.hw-note { margin-top:18px; font-size:12.5px; color:var(--muted); }

/* ═══════════ HOW ═══════════ */
.how { padding:96px 0; border-top:1px solid var(--line); }
.steps { display:grid; grid-template-columns:repeat(3, 1fr); gap:20px; }
.step { background:var(--surface); border-radius:var(--r-lg); padding:34px 30px; }
.step-n {
    width:44px; height:44px; border-radius:50%; display:flex; align-items:center; justify-content:center;
    background:var(--ink); color:#fff;
    font-family:var(--display); font-weight:600; font-size:18px; margin-bottom:20px;
}
.step h3 { margin-bottom:8px; }
.step p { color:var(--ink-2); font-size:14.5px; }

/* ═══════════ SPECS ═══════════ */
.specs { padding:96px 0 64px; border-top:1px solid var(--line); }
.specs-grid { display:grid; grid-template-columns:1fr 1fr; gap:14px; }
.spec {
    border:1px solid var(--line); border-radius:var(--r);
    padding:22px 24px; display:flex; flex-direction:column; gap:3px;
    transition:border-color .2s;
}
.spec:hover { border-color:var(--line-2); }
.spec span { font-family:var(--mono); font-size:11px; text-transform:uppercase; letter-spacing:.1em; color:var(--muted); }
.spec b { font-size:15.5px; }
.spec i { font-style:normal; font-size:13px; color:var(--ink-2); }

/* ═══════════ CASES ═══════════ */
.cases { padding:64px 0 96px; }
.cases-grid { display:grid; grid-template-columns:repeat(3, 1fr); gap:20px; }
.case {
    background:var(--surface); border-radius:var(--r-lg);
    padding:32px 30px; display:flex; flex-direction:column; gap:14px;
    transition:transform .2s, box-shadow .2s;
}
.case:hover { transform:translateY(-3px); box-shadow:0 18px 44px rgba(18,19,23,.08); }
.case-icon { width:44px; height:44px; border-radius:50%; background:var(--bg); display:flex; align-items:center; justify-content:center; }
.case-icon svg { width:22px; height:22px; stroke:var(--ink); }
.case p { color:var(--ink-2); font-size:14.5px; flex:1; }
.case-tag { font-family:var(--mono); font-size:11px; color:var(--muted); letter-spacing:.04em; }
.cases-note { margin-top:22px; font-size:12.5px; color:var(--muted); }

/* ═══════════ COMPARE ═══════════ */
.compare { padding:32px 0 104px; }
.compare-scroll { overflow-x:auto; border-radius:var(--r-lg); border:1px solid var(--line); }
.compare-table { width:100%; min-width:720px; border-collapse:collapse; }
.compare-table th, .compare-table td { padding:16px 22px; text-align:left; font-size:14.5px; border-bottom:1px solid var(--line); }
.compare-table thead th { font-family:var(--mono); font-size:12px; text-transform:uppercase; letter-spacing:.08em; color:var(--muted); background:var(--surface); }
.compare-table td { color:var(--ink-2); }
.compare-table td:first-child { color:var(--ink); font-weight:500; }
.compare-table .hl { background:rgba(46,107,230,.05); }
.compare-table thead .hl { color:var(--accent); }
.compare-table tbody tr:last-child td { border-bottom:none; }

/* ═══════════ PRICING — black card ═══════════ */
.pricing { padding:0 0 104px; }
.pricing-card {
    display:grid; grid-template-columns:1.1fr .9fr; gap:48px;
    background:
        radial-gradient(90% 120% at 85% -10%, rgba(77,141,255,.25) 0%, transparent 55%),
        var(--card-ink);
    color:#e7eaf0;
    border-radius:var(--r-xl);
    padding:56px 58px; box-shadow:var(--shadow);
}
.pricing-card h2, .pricing-card b { color:#fff; }
.pricing-card .eyebrow { color:#c9ccd4; border-color:rgba(255,255,255,.22); background:transparent; }
.pricing-left p { color:#9aa3b2; max-width:440px; }
.price-big { font-family:var(--display); font-size:60px; font-weight:600; letter-spacing:-.03em; line-height:1; color:#fff; }
.price-sub { color:#9aa3b2; font-size:14px; margin:10px 0 24px; }
.price-includes { list-style:none; display:flex; flex-direction:column; gap:10px; margin-bottom:28px; }
.price-includes li { color:#c2c7d1; font-size:14.5px; padding-left:24px; position:relative; }
.price-includes li::before { content:'✓'; position:absolute; left:0; color:var(--ok-dark); font-weight:700; }
.pricing-card .btn-primary { background:#fff; color:var(--ink); }
.pricing-card .btn-primary:hover { background:#e8eaee; box-shadow:0 10px 26px rgba(0,0,0,.4); }
.pricing-left h2 { margin-bottom:14px; }

/* ═══════════ FAQ — minimal hairlines ═══════════ */
.faq { padding:0 0 104px; }
.faq details { border-top:1px solid var(--line); }
.faq details:last-of-type { border-bottom:1px solid var(--line); }
.faq summary {
    list-style:none; cursor:pointer; padding:22px 4px;
    font-family:var(--display); font-weight:500; font-size:17px; position:relative; padding-right:52px;
    transition:color .15s;
}
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after {
    content:'+'; position:absolute; right:8px; top:50%; transform:translateY(-50%);
    font-size:24px; font-weight:300; color:var(--muted); transition:transform .2s;
}
.faq details[open] summary::after { transform:translateY(-50%) rotate(45deg); }
.faq details p { padding:0 4px 24px; color:var(--ink-2); font-size:15px; max-width:720px; }

/* ═══════════ CONTACT ═══════════ */
.contact { padding:0 0 112px; }
.contact-card {
    background:var(--surface); border-radius:var(--r-xl);
    padding:52px 54px;
}
.contact-card .sec-head { margin-bottom:32px; }
.contact-sub { color:var(--ink-2); margin-top:6px; }
.lead-form label { display:flex; flex-direction:column; gap:7px; font-size:13.5px; font-weight:600; margin-bottom:16px; }
.lead-form .opt { color:var(--muted); font-weight:400; }
.lead-form input, .lead-form textarea {
    background:var(--bg); border:1px solid var(--line-2); border-radius:14px;
    min-height:50px; padding:13px 16px; color:var(--ink);
    font-family:var(--font); font-size:15px; resize:vertical;
    transition:border-color .15s, box-shadow .15s;
}
.lead-form input:focus, .lead-form textarea:focus {
    outline:none; border-color:var(--ink);
    box-shadow:0 0 0 3px rgba(18,19,23,.10);
}
.form-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note { margin-top:14px; font-size:13px; color:var(--muted); text-align:center; }
.form-note a { text-decoration:underline; text-underline-offset:3px; }

/* ═══════════ FOOTER ═══════════ */
.footer { border-top:1px solid var(--line); padding:40px 0; }
.footer-inner { display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; }
.footer-note { font-size:12.5px; color:var(--muted); }
.footer-links { display:flex; gap:22px; }
.footer-links a { color:var(--ink-2); font-size:13.5px; }
.footer-links a:hover { color:var(--ink); }

/* ═══════════ Production-flow animation ═══════════
   The "line" keeps running through the whole page: glowing product
   pulses ride every full-bleed hairline divider. transform-only,
   GPU-friendly. */
.tour, .how, .specs, .footer { position:relative; }
.tour::after, .how::after, .specs::after, .footer::after {
    content:''; position:absolute; top:-2px; left:0; width:44px; height:4px;
    border-radius:100px; pointer-events:none;
    background:linear-gradient(90deg, transparent, var(--accent));
    box-shadow:0 0 12px rgba(46,107,230,.5);
    animation:flow-x 16s linear infinite;
}
.how::after    { animation-delay:-4s; }
.specs::after  { animation-delay:-8s; }
.footer::after { animation-delay:-12s; }
@keyframes flow-x {
    from { transform:translateX(-48px); }
    to   { transform:translateX(100vw); }
}
/* The pulse overshoots the right edge at the end of its run. Clip it at
   the section level — clipping the root element instead breaks sticky
   positioning and causes paint glitches on mobile browsers. */
.tour, .how, .specs, .footer { overflow-x: clip; }

@media (prefers-reduced-motion: reduce) {
    .tour::after, .how::after, .specs::after, .footer::after { display:none; }
    .brand-glyph polyline { animation:none; stroke-dasharray:none; }
}

/* ═══════════ Reveal animations ═══════════ */
.reveal { opacity:0; transform:translateY(22px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in { opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior:auto; }
    .reveal { opacity:1; transform:none; transition:none; }
}

/* ═══════════ Responsive ═══════════ */
@media (max-width: 1024px) {
    .feature { gap:40px; }
}
@media (max-width: 860px) {
    .nav-links { display:none; position:absolute; top:68px; left:0; right:0;
        flex-direction:column; gap:0; background:var(--bg);
        border-bottom:1px solid var(--line); padding:8px 0; }
    .nav-links.open { display:flex; }
    .nav-links a { padding:14px 24px; font-size:16px; min-height:44px; display:flex; align-items:center; }
    .nav-burger { display:flex; }
    .split { grid-template-columns:1fr; }
    .shots-grid { grid-template-columns:1fr; }
    .hw-grid { grid-template-columns:1fr; }
    .hw-duo { grid-template-columns:1fr; }
    .feature { grid-template-columns:1fr; padding:36px 0; }
    .feature.flip .feature-copy { order:1; }
    .feature.flip .feature-visual { order:2; }
    .steps { grid-template-columns:1fr; }
    .specs-grid { grid-template-columns:1fr; }
    .cases-grid { grid-template-columns:1fr; }
    .pricing-card { grid-template-columns:1fr; padding:38px 30px; gap:32px; }
    .contact-card { padding:36px 26px; }
    .form-grid { grid-template-columns:1fr; }
}
@media (max-width: 460px) {
    .hero { padding:64px 0 72px; }
    .hero-cta .btn { width:100%; }
    .mock-ctrl-grid { grid-template-columns:repeat(2, 1fr); }
    .wrap { padding:0 18px; }
    .device { padding:14px; border-radius:22px; }
}

/* ═══════════ GROWTH ADDITIONS (landings, calculator, offer) ═══════════ */

/* Founders price */
.price-was {
    font-family:var(--display); font-size:17px; color:var(--muted);
    text-decoration:line-through; text-decoration-thickness:1.5px;
}
.price-was.big { font-size:22px; font-weight:500; }
.avail-note { font-size:13.5px; color:var(--muted); margin:10px 0 0; line-height:1.5; }
.avail-note b { color:var(--ink-2); }
.hero .avail-note { text-align:center; margin-top:12px; }
.founders-note {
    margin-top:22px; padding:16px 20px; border-radius:var(--r);
    background:var(--surface); border:1px solid var(--line-2);
    font-size:14.5px; line-height:1.6; color:var(--ink-2);
}
.founders-note b { color:var(--ink); }

/* Downtime calculator */
.calc { padding:90px 0; }
.calc-sub { color:var(--muted); font-size:15px; margin-top:10px; }
.calc-card {
    max-width:860px; margin:36px auto 0; padding:34px 38px;
    background:var(--surface); border:1px solid var(--line-2); border-radius:var(--r-lg);
}
.calc-inputs { display:grid; grid-template-columns:repeat(3, 1fr); gap:16px; }
.calc-inputs label { display:flex; flex-direction:column; gap:7px; font-size:13.5px; font-weight:600; }
.calc-inputs input {
    background:var(--bg); border:1px solid var(--line-2); border-radius:14px;
    min-height:50px; padding:13px 16px; color:var(--ink);
    font-family:var(--font); font-size:16px; font-variant-numeric:tabular-nums;
    transition:border-color .15s, box-shadow .15s;
}
.calc-inputs input:focus { outline:none; border-color:var(--ink); box-shadow:0 0 0 3px rgba(18,19,23,.10); }
.calc-out { display:grid; grid-template-columns:repeat(3, 1fr); gap:16px; margin-top:22px; }
.calc-tile {
    background:var(--bg); border:1px solid var(--line-2); border-radius:var(--r);
    padding:16px 18px; display:flex; flex-direction:column; gap:4px;
}
.calc-tile span { font-size:12.5px; font-weight:600; color:var(--muted); letter-spacing:.02em; }
.calc-tile b {
    font-family:var(--display); font-size:26px; letter-spacing:-.02em;
    font-variant-numeric:tabular-nums;
}
.calc-tile.big b { color:var(--bad); }
.calc-tile.ok b { color:var(--ok); }
.calc-tile i { font-style:normal; font-size:12px; color:var(--muted); }
.calc-cta { text-align:center; margin-top:24px; }

/* Lead form extras */
.lead-form select {
    background:var(--bg); border:1px solid var(--line-2); border-radius:14px;
    min-height:50px; padding:13px 16px; color:var(--ink);
    font-family:var(--font); font-size:15px; appearance:none;
    background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2377797f' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat:no-repeat; background-position:right 18px center;
    transition:border-color .15s, box-shadow .15s;
}
.lead-form select:focus { outline:none; border-color:var(--ink); box-shadow:0 0 0 3px rgba(18,19,23,.10); }
.lead-form .hp { position:absolute; left:-9999px; width:1px; height:1px; overflow:hidden; }
.lead-form { position:relative; }
.form-success {
    text-align:center; padding:34px 20px; border-radius:var(--r);
    background:rgba(30,169,102,.07); border:1px solid rgba(30,169,102,.30);
}
.form-success b { font-family:var(--display); font-size:19px; }
.form-success p { margin:10px auto 0; max-width:46ch; color:var(--ink-2); font-size:14.5px; line-height:1.6; }
.btn[disabled] { opacity:.55; cursor:default; pointer-events:none; }

/* Landing pages (guides) */
.landing { padding:120px 0 40px; }
.crumbs { font-size:13px; color:var(--muted); margin-bottom:26px; }
.crumbs a { color:var(--muted); text-decoration:underline; text-underline-offset:3px; }
.page-hero h1 {
    font-family:var(--display); font-size:clamp(30px, 4.6vw, 44px);
    line-height:1.12; letter-spacing:-.02em; margin:14px 0 0;
}
.page-hero .hero-sub { margin:20px 0 0; max-width:640px; }
.urgent-cta { margin:26px 0 0; }
.article { margin:44px 0 20px; }
.article h2 {
    font-family:var(--display); font-size:25px; letter-spacing:-.015em;
    margin:44px 0 14px;
}
.article p { color:var(--ink-2); font-size:16px; line-height:1.7; margin:12px 0; max-width:68ch; }
.article ul, .article ol { color:var(--ink-2); font-size:16px; line-height:1.7; padding-left:22px; max-width:66ch; }
.article li { margin:8px 0; }
.article li b, .article p b { color:var(--ink); }
.article a { text-decoration:underline; text-underline-offset:3px; }
.triage { counter-reset:none; }
.small-note { font-size:13.5px; color:var(--muted); }
.landing .compare-scroll { margin:18px 0; }
.landing .faq { padding:30px 0 10px; }
.landing .contact { padding:40px 0 60px; }

/* Footer resources row */
.footer-resources {
    width:100%; display:flex; gap:8px 20px; flex-wrap:wrap;
    padding-top:16px; margin-top:6px; border-top:1px solid var(--line);
    font-size:12.5px;
}
.footer-resources span { color:var(--muted); }
.footer-resources a { color:var(--ink-2); text-decoration:underline; text-underline-offset:3px; }

@media (max-width: 760px) {
    .calc-inputs, .calc-out { grid-template-columns:1fr; }
    .calc-card { padding:24px 20px; }
    .landing { padding-top:104px; }
}

/* ═══════════ SCREENS TOGGLE + TWEAKS ═══════════ */
.screens-toggle { display:flex; gap:8px; justify-content:center; margin-top:22px; }
.toggle-pill {
    min-height:44px; padding:0 22px; border-radius:100px;
    border:1px solid var(--line-2); background:var(--bg); color:var(--ink-2);
    font-family:var(--font); font-size:14px; font-weight:600; cursor:pointer;
    transition:background .15s, color .15s, border-color .15s;
}
.toggle-pill:hover { border-color:var(--ink); }
.toggle-pill.active { background:var(--ink); color:var(--bg); border-color:var(--ink); }
.problem-note { margin-left:auto; margin-right:auto; text-align:center; }
.mock-row .dot.warn { background:var(--warn); box-shadow:0 0 8px var(--warn); }

/* ═══════════ USER MANUAL PAGE (user-guide.html) ═══════════ */
.manual-layout {
    display:grid; grid-template-columns:240px minmax(0, 1fr);
    gap:56px; align-items:start; margin-top:36px;
}
.manual-toc {
    position:sticky; top:96px;
    max-height:calc(100vh - 120px); overflow-y:auto;
    font-size:13.5px; line-height:1.45;
}
.manual-toc summary {
    font-family:var(--mono); font-size:11px; text-transform:uppercase;
    letter-spacing:.08em; color:var(--muted); margin-bottom:10px;
    cursor:default; list-style:none;
}
.manual-toc summary::-webkit-details-marker { display:none; }
.manual-toc summary::after {
    content:"▾"; display:none; margin-left:8px;
    transition:transform .15s;
}
.manual-toc details:not([open]) summary::after { transform:rotate(-90deg); }
.manual-toc nav a {
    display:block; padding:6px 12px;
    border-left:2px solid var(--line); color:var(--ink-2);
}
.manual-toc nav a:hover { color:var(--ink); border-left-color:var(--line-2); }
.manual-toc nav a.active { color:var(--accent); border-left-color:var(--accent); font-weight:600; }
.manual-body { margin-top:0; }
.manual-body > h2:first-child { margin-top:8px; }
.manual-body h2 { scroll-margin-top:96px; padding-top:26px; border-top:1px solid var(--line); }
.manual-body h3 {
    scroll-margin-top:96px;
    font-family:var(--display); font-size:18.5px; letter-spacing:-.01em;
    margin:28px 0 6px;
}
.manual-body .manual-shot { max-width:440px; margin:24px 0 28px; }
.manual-note {
    max-width:66ch; margin:16px 0; padding:14px 18px;
    background:var(--surface); border:1px solid var(--line);
    border-radius:var(--r); font-size:14.5px; color:var(--ink-2);
}
.manual-body .compare-table { min-width:560px; }
.manual-body code.mono, .article code.mono {
    font-family:var(--mono); font-size:.86em;
    background:var(--surface-2); border:1px solid var(--line);
    border-radius:6px; padding:1px 6px; white-space:nowrap;
}
.manual-body .founders-note { margin-top:40px; }
@media (max-width: 1024px) {
    .manual-layout { display:block; }
    .manual-toc {
        position:static; max-height:none; margin-bottom:8px;
        border:1px solid var(--line); border-radius:var(--r-lg);
        padding:14px 18px; background:var(--surface);
    }
    .manual-toc summary { cursor:pointer; margin-bottom:0; }
    .manual-toc summary::after { display:inline-block; }
    .manual-toc[data-collapsible] details[open] summary { margin-bottom:10px; }
    .manual-toc nav a { border-left:none; padding:7px 0; min-height:34px; }
}