/* PrivateBooks — marketing site. Self-contained, no external fonts or trackers
   (fitting a privacy-first product). System font renders as SF on Apple devices. */
:root{
  --ink:#1b1b1f; --muted:#6b6f76; --faint:#8a8f98;
  --bg:#ffffff; --bg2:#f5f6f7; --bg-dark:#0d1512; --card:#ffffff;
  --line:#e6e8ec; --nav-bg:rgba(255,255,255,.72); --nav-border:rgba(0,0,0,.06);
  --brand:#1f7a5a; --brand-dark:#155c43; --brand-soft:#e7f4ee;
  --accent:#2563eb;
  --radius:18px; --maxw:1080px;
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
:root[data-theme="dark"]{
  --ink:#f1f4f3; --muted:#9aa39f; --faint:#7e857f;
  --bg:#0b0f0e; --bg2:#121715; --bg-dark:#070d0b; --card:#141a18;
  --line:#262d2a; --nav-bg:rgba(11,15,14,.72); --nav-border:rgba(255,255,255,.08);
  --brand:#3aa57c; --brand-dark:#46b88b; --brand-soft:#13241d;
  --accent:#6aa3ff;
}
html{background:var(--bg)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.5;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:var(--nav-bg);
  backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid var(--nav-border)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:52px}
.nav .brand{display:flex;align-items:center;gap:9px;font-weight:600;font-size:18px;letter-spacing:-.01em}
.nav .brand img{width:22px;height:22px;border-radius:6px}
.nav .links{display:flex;align-items:center;gap:26px;font-size:14px;color:var(--muted)}
.nav .links a:hover{color:var(--ink)}
.nav .cta{background:var(--brand);color:#fff;padding:7px 15px;border-radius:980px;font-weight:500;font-size:14px}
.nav .cta:hover{background:var(--brand-dark);color:#fff}
.nav .links .ghost{color:var(--muted)}
.theme-toggle{background:none;border:0;cursor:pointer;font-size:17px;line-height:1;padding:6px;border-radius:8px;color:var(--muted)}
.theme-toggle:hover{background:var(--bg2);color:var(--ink)}
.theme-toggle .moon{display:none}.theme-toggle .sun{display:inline}
:root[data-theme="dark"] .theme-toggle .moon{display:inline}:root[data-theme="dark"] .theme-toggle .sun{display:none}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;font-size:22px;line-height:1;
  padding:4px 9px;color:var(--ink);border-radius:8px}
.nav-toggle:hover{background:var(--bg2)}
@media(max-width:720px){
  .nav-toggle{display:inline-flex;align-items:center}
  .nav .links{position:absolute;left:0;right:0;top:52px;display:none;
    flex-direction:column;align-items:stretch;gap:0;padding:4px 24px 14px;
    background:var(--bg);border-bottom:1px solid var(--nav-border);box-shadow:0 12px 24px rgba(0,0,0,.10)}
  .nav.open .links{display:flex}
  .nav .links a:not(.cta){padding:13px 2px;border-top:1px solid var(--nav-border);font-size:15px}
  .nav .links .theme-toggle{align-self:flex-start;margin:8px 0;font-size:18px}
  .nav .links .cta{margin-top:12px;text-align:center;padding:12px 15px;font-size:15px}
}

/* ---------- shared section ---------- */
section{padding:108px 0}
.eyebrow{color:var(--brand);font-weight:600;font-size:15px;letter-spacing:.02em;margin-bottom:14px}
h1,h2,h3{letter-spacing:-.022em;line-height:1.07;font-weight:650}
h1{font-size:clamp(40px,6.4vw,76px)}
h2{font-size:clamp(30px,4.6vw,52px);line-height:1.08}
h3{font-size:clamp(22px,2.6vw,30px)}
.lead{font-size:clamp(18px,2.1vw,22px);color:var(--muted);line-height:1.5;font-weight:400}
.center{text-align:center}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--brand);color:#fff;
  padding:14px 26px;border-radius:980px;font-weight:500;font-size:17px;transition:transform .15s,background .15s}
.btn:hover{background:var(--brand-dark);color:#fff;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--brand);padding:14px 10px}
.btn.ghost:hover{transform:none;color:var(--brand-dark)}
.btn.lg{font-size:19px;padding:16px 32px}
.btnrow{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* ---------- hero ---------- */
.hero{padding:84px 0 64px;text-align:center;background:
  radial-gradient(120% 80% at 50% -10%, var(--brand-soft) 0%, var(--bg) 55%)}
.hero h1{max-width:14ch;margin:0 auto 22px}
.hero .lead{max-width:60ch;margin:0 auto 30px}
.hero .btnrow{justify-content:center;margin-bottom:10px}
.hero .micro{color:var(--faint);font-size:14px;margin-top:8px}
.hero .micro b{color:var(--muted);font-weight:600}

/* ---------- browser-framed screenshot ---------- */
.shot{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  box-shadow:0 30px 60px -28px rgba(16,40,30,.35),0 8px 24px -12px rgba(0,0,0,.12);background:#fff}
.shot .bar{display:flex;align-items:center;gap:7px;padding:11px 14px;background:#f3f4f6;border-bottom:1px solid var(--line)}
.shot .bar i{width:11px;height:11px;border-radius:50%;background:#d6d9de;display:inline-block}
.shot .bar i:nth-child(1){background:#ff5f57}.shot .bar i:nth-child(2){background:#febc2e}.shot .bar i:nth-child(3){background:#28c840}
.shot .bar .url{margin-left:10px;font-size:12px;color:var(--faint);font-family:ui-monospace,Menlo,monospace}
.shot img{width:100%}
.hero .shot{max-width:1000px;margin:46px auto 0}

/* ---------- stats strip ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px;margin:0 auto;text-align:center}
.stats .n{font-size:clamp(34px,4.4vw,52px);font-weight:680;letter-spacing:-.03em;color:var(--brand)}
.stats .l{color:var(--muted);font-size:15px;margin-top:4px}
@media(max-width:720px){.stats{grid-template-columns:repeat(2,1fr);gap:32px 20px}}

/* ---------- privacy band (dark) ---------- */
.band{background:var(--bg-dark);color:#fff;text-align:center}
.band h2{color:#fff}
.band .lead{color:#aeb6b1}
.band .pills{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:30px}
.band .pill{border:1px solid rgba(255,255,255,.18);border-radius:980px;padding:10px 18px;font-size:15px;color:#dfe6e2}
.band .pill b{color:#fff}

/* ---------- steps ---------- */
.steps{display:grid;gap:84px;margin-top:64px}
.step{display:grid;grid-template-columns:1fr 1.25fr;gap:48px;align-items:center}
.step:nth-child(even){grid-template-columns:1.25fr 1fr}
.step:nth-child(even) .copy{order:2}
.step .num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  background:var(--brand-soft);color:var(--brand-dark);font-weight:680;font-size:17px;margin-bottom:16px}
.step .copy p{color:var(--muted);font-size:18px;margin-top:12px;max-width:44ch}
.step .copy .tag{display:inline-block;margin-top:14px;color:var(--brand);font-weight:600;font-size:15px}
@media(max-width:820px){.step,.step:nth-child(even){grid-template-columns:1fr;gap:24px}.step:nth-child(even) .copy{order:0}}

/* ---------- feature cards ---------- */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:56px}
.feature{background:var(--bg2);border-radius:var(--radius);padding:30px 26px}
.feature .ic{font-size:26px;margin-bottom:12px}
.feature h3{font-size:21px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:16px}
@media(max-width:820px){.features{grid-template-columns:1fr}}

/* ---------- gallery (alternating big shots) ---------- */
.showcase{display:grid;gap:96px;margin-top:64px}

/* ---------- final CTA ---------- */
.final{text-align:center;background:radial-gradient(120% 90% at 50% 120%, var(--brand-soft) 0%, var(--bg) 60%)}
.final h2{max-width:16ch;margin:0 auto 18px}
.final .lead{max-width:52ch;margin:0 auto 28px}
.final .note{color:var(--faint);font-size:14px;margin-top:18px}

/* ---------- footer ---------- */
footer{background:var(--bg2);color:var(--muted);font-size:14px;padding:46px 0;border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}
footer a{color:var(--muted)}footer a:hover{color:var(--ink)}
footer .legal{max-width:62ch;color:var(--faint);font-size:13px;margin-top:14px;line-height:1.55}
footer .brand{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--ink)}
footer .brand img{width:20px;height:20px;border-radius:6px}

/* ---------- pricing ---------- */
.price-card{max-width:500px;margin:44px auto 0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:46px 38px;text-align:center;box-shadow:0 20px 50px -30px rgba(16,40,30,.3)}
.price-card .amt{font-size:clamp(56px,9vw,80px);font-weight:680;letter-spacing:-.04em;line-height:1;color:var(--ink)}
.price-card .amt small{font-size:22px;font-weight:500;color:var(--muted);letter-spacing:0}
.price-card .sub{color:var(--muted);margin-top:8px;font-size:17px}
.price-card ul{list-style:none;margin:28px auto;text-align:left;max-width:320px}
.price-card li{padding:8px 0;font-size:16.5px;display:flex;gap:11px;align-items:flex-start;color:var(--ink)}
.price-card li::before{content:'✓';color:var(--brand);font-weight:800;flex:0 0 auto}

/* ---------- FAQ ---------- */
.faq{max-width:780px;margin:46px auto 0}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:22px 4px;font-size:19px;font-weight:600;
  display:flex;justify-content:space-between;align-items:center;gap:18px;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';color:var(--brand);font-weight:500;font-size:26px;line-height:1;flex:0 0 auto}
.faq details[open] summary::after{content:'–'}
.faq .a{padding:2px 4px 24px;color:var(--muted);font-size:16.5px;line-height:1.62;max-width:66ch}
.faq .a a{color:var(--brand);text-decoration:underline}

/* ---------- press kit ---------- */
.press{max-width:980px;margin:0 auto;padding:64px 24px 24px}
.press .block{padding:40px 0;border-top:1px solid var(--line)}
.press .block:first-of-type{border-top:0}
.press h1{font-size:clamp(34px,5vw,52px);margin-bottom:10px}
.press h2{font-size:26px;margin-bottom:6px}
.press p{color:var(--muted);font-size:17px;line-height:1.6;max-width:72ch}
.press a{color:var(--brand);text-decoration:underline}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
.gallery a{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card);text-decoration:none}
.gallery img{width:100%;display:block}
.gallery .cap{font-size:13px;color:var(--muted);padding:9px 12px}
@media(max-width:760px){.gallery{grid-template-columns:1fr 1fr}}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:0 36px;margin-top:14px;max-width:820px}
.facts div{padding:11px 0;border-bottom:1px solid var(--line);font-size:16px;color:var(--muted)}
.facts b{color:var(--ink);font-weight:600}
.swatches{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px}
.swatch{width:128px}
.swatch .chip{height:66px;border-radius:10px;border:1px solid var(--line)}
.swatch .nm{font-size:13px;color:var(--muted);margin-top:7px}
.swatch .hex{font-size:13px;font-family:ui-monospace,Menlo,monospace;color:var(--ink)}
.boiler{background:var(--bg2);border-radius:12px;padding:20px 22px;color:var(--ink);font-size:16px;line-height:1.62;max-width:760px;margin-top:14px}
.assetrow{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:16px}
.assetrow img{width:76px;height:76px;border-radius:17px;border:1px solid var(--line)}

/* ---------- scroll reveal ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}