/* Selk site — Apple product-page style: big type, lots of space, alternating light/dark bands,
   real screenshots in a phone frame, reveal on scroll. */
:root {
  --ink: #1d1d1f; --dim: #6e6e73; --faint: #86868b; --line: #d2d2d7;
  --bg: #fbfbfd; --band: #f5f5f7; --dark: #000; --dark-ink: #f5f5f7; --dark-dim: #a1a1a6;
  --blue: #0071e3; --green: #3f8a55;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--ink);
  font: 17px/1.47 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  letter-spacing: -.022em; -webkit-font-smoothing: antialiased;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- nav ---------- */
.nav { position: sticky; top: 0; z-index: 10; background: rgba(251, 251, 253, .8); -webkit-backdrop-filter: saturate(180%) blur(20px); backdrop-filter: saturate(180%) blur(20px); border-bottom: 1px solid rgba(0, 0, 0, .06); }
.nav .in { max-width: 1000px; margin: 0 auto; height: 48px; padding: 0 22px; display: flex; align-items: center; gap: 22px; font-size: 12.5px; }
.nav .brand { display: flex; align-items: center; gap: 8px; color: var(--ink); font-weight: 600; font-size: 15px; text-decoration: none; }
.nav .brand img { width: 22px; height: 22px; }
.nav .links { margin-left: auto; display: flex; gap: 22px; }
.nav .links a { color: var(--ink); opacity: .8; }
.nav .pill { background: var(--blue); color: #fff; padding: 4px 12px; border-radius: 980px; font-weight: 500; white-space: nowrap; }
.nav .pill:hover { text-decoration: none; opacity: .9; }
@media (max-width: 640px) { .nav .links a:not(.pill) { display: none; } }

/* ---------- type ---------- */
.eyebrow { font-size: 21px; font-weight: 600; color: var(--faint); letter-spacing: .011em; margin: 0 0 6px; }
.headline { font-size: clamp(40px, 7vw, 80px); line-height: 1.05; font-weight: 700; letter-spacing: -.015em; margin: 0; }
.h2 { font-size: clamp(32px, 5vw, 56px); line-height: 1.07; font-weight: 700; letter-spacing: -.005em; margin: 0; }
.lede { font-size: clamp(19px, 2.4vw, 24px); line-height: 1.33; color: var(--dim); max-width: 720px; margin: 18px auto 0; font-weight: 500; }
.center { text-align: center; }
.grad { background: linear-gradient(90deg, #1d1d1f, #6e6e73); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ---------- sections ---------- */
section { padding: 110px 22px; }
.band { background: var(--band); }
.dark { background: var(--dark); color: var(--dark-ink); }
.dark .lede, .dark .copy p { color: var(--dark-dim); }
.dark .grad { background: linear-gradient(90deg, #f5f5f7, #a1a1a6); -webkit-background-clip: text; background-clip: text; }
.wrap { max-width: 1000px; margin: 0 auto; }

.hero { padding: 90px 22px 0; text-align: center; overflow: hidden; }
.hero .logo { width: 84px; height: 84px; border-radius: 19px; box-shadow: 0 16px 40px rgba(0, 0, 0, .18); margin-bottom: 26px; }
.ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.btn { display: inline-block; background: var(--blue); color: #fff; font-size: 17px; padding: 12px 24px; border-radius: 980px; font-weight: 500; }
.btn:hover { text-decoration: none; background: #0077ed; }
.btn.ghost { background: transparent; color: var(--blue); }
.note { font-size: 14px; color: var(--faint); margin-top: 14px; }
.hero-phones { display: flex; justify-content: center; align-items: flex-end; gap: 28px; margin-top: 70px; }
.hero-phones .phone:nth-child(1), .hero-phones .phone:nth-child(3) { transform: translateY(46px) scale(.88); opacity: .96; }
@media (max-width: 760px) { .hero-phones .phone:nth-child(1), .hero-phones .phone:nth-child(3) { display: none; } }

/* ---------- phone frame ---------- */
.phone {
  width: 290px; flex: none; border-radius: 52px; padding: 11px; background: #1d1d1f;
  box-shadow: 0 0 0 2px #3a3a3c, 0 40px 80px rgba(0, 0, 0, .25), inset 0 0 0 1px #000;
}
.phone img { display: block; width: 100%; border-radius: 42px; }
.dark .phone { box-shadow: 0 0 0 2px #48484a, 0 40px 90px rgba(0, 0, 0, .7); }

/* ---------- feature rows ---------- */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.feature.flip .copy { order: 2; }
.feature .media { display: flex; justify-content: center; }
.copy .h2 { font-size: clamp(30px, 4vw, 48px); }
.copy p { font-size: 21px; line-height: 1.38; color: var(--dim); margin: 18px 0 0; font-weight: 500; }
.copy p b { color: var(--ink); font-weight: 600; }
.dark .copy p b { color: var(--dark-ink); }
.copy ul { list-style: none; padding: 0; margin: 22px 0 0; }
.copy li { padding: 10px 0; border-top: 1px solid var(--line); font-size: 17px; color: var(--dim); }
.dark .copy li { border-color: #333; }
.copy li b { color: var(--ink); font-weight: 600; }
.dark .copy li b { color: var(--dark-ink); }
@media (max-width: 820px) { .feature { grid-template-columns: 1fr; gap: 40px; text-align: center; } .feature.flip .copy { order: 0; } .copy ul { text-align: left; } }

/* ---------- flow ---------- */
.flow { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 8px; margin-top: 44px; }
.flow span { background: #fff; border: 1px solid var(--line); padding: 12px 20px; border-radius: 980px; font-weight: 600; font-size: 17px; }
.flow i { align-self: center; color: var(--faint); font-style: normal; }

/* ---------- tiles ---------- */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
@media (max-width: 860px) { .tiles { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .tiles { grid-template-columns: 1fr; } }
.tile { background: #fff; border-radius: 28px; padding: 30px 28px; box-shadow: 0 2px 10px rgba(0, 0, 0, .04); }
.band .tile { background: #fff; }
.dark .tile { background: #1d1d1f; box-shadow: none; }
.tile .ic { font-size: 34px; line-height: 1; }
.tile h3 { font-size: 22px; margin: 16px 0 8px; letter-spacing: -.01em; }
.tile p { margin: 0; color: var(--dim); font-size: 16px; }
.dark .tile p { color: var(--dark-dim); }

/* ---------- pricing ---------- */
.plans { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 56px; }
@media (max-width: 860px) { .plans { grid-template-columns: 1fr; max-width: 420px; margin-left: auto; margin-right: auto; } }
.plan { background: #fff; border-radius: 28px; padding: 34px 30px; text-align: left; border: 1px solid transparent; }
.plan.hot { border-color: var(--ink); }
.plan .tag { font-size: 12px; font-weight: 600; color: var(--blue); text-transform: uppercase; letter-spacing: .06em; height: 16px; }
.plan h3 { font-size: 26px; margin: 8px 0 0; }
.plan .price { font-size: 44px; font-weight: 700; letter-spacing: -.02em; margin: 14px 0 0; }
.plan .price small { font-size: 17px; font-weight: 500; color: var(--faint); letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 20px 0 0; }
.plan li { padding: 9px 0; border-top: 1px solid var(--line); color: var(--dim); font-size: 16px; }

/* ---------- get the app ---------- */
.stores { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.store { display: inline-flex; align-items: center; gap: 10px; background: #000; color: #fff; padding: 10px 20px 10px 16px; border-radius: 14px; min-width: 190px; text-align: left; }
.store:hover { text-decoration: none; opacity: .88; }
.store span { display: flex; flex-direction: column; font-size: 21px; font-weight: 600; line-height: 1.05; letter-spacing: -.01em; }
.store small { font-size: 11px; font-weight: 500; letter-spacing: 0; }
.store[aria-disabled="true"] { opacity: .35; pointer-events: none; }
.early { max-width: 560px; margin: 44px auto 0; background: #fff; border-radius: 28px; padding: 30px; text-align: left; }
.early h3 { margin: 0; font-size: 24px; }
.early p { color: var(--dim); margin: 6px 0 18px; font-size: 16px; }
.early .row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
@media (max-width: 560px) { .early .row { grid-template-columns: 1fr; } }
.early input { width: 100%; font: inherit; font-size: 16px; padding: 13px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); outline: none; }
.early input:focus { border-color: var(--blue); }
.early .btn { width: 100%; margin-top: 6px; border: 0; cursor: pointer; }
.early .msg { margin-top: 12px; font-size: 15px; min-height: 20px; }
.early .msg.ok { color: var(--green); } .early .msg.err { color: #c94c43; }

/* ---------- quote ---------- */
.quote { font-size: clamp(26px, 3.6vw, 40px); line-height: 1.2; font-weight: 600; letter-spacing: -.01em; max-width: 860px; margin: 0 auto; }
.quote-by { margin-top: 22px; color: var(--dark-dim); font-size: 17px; }

/* ---------- footer ---------- */
footer { background: var(--band); color: var(--faint); font-size: 12px; padding: 22px; }
footer .in { max-width: 1000px; margin: 0 auto; display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: center; border-top: 1px solid var(--line); padding-top: 18px; }
footer a { color: var(--dim); }
footer .sp { flex: 1; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity .9s cubic-bezier(.2, .7, .2, 1), transform .9s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }

/* ---------- Terms / Privacy / Support ---------- */
.doc main { max-width: 760px; margin: 0 auto; padding: 60px 22px 90px; }
.doc h1 { font-size: 44px; letter-spacing: -.015em; margin: 0 0 6px; }
.doc .muted { color: var(--faint); margin: 0 0 30px; font-size: 15px; }
.doc main section { padding: 22px 0; border-top: 1px solid var(--line); }
.doc h2 { font-size: 21px; margin: 0 0 8px; }
.doc p, .doc li { color: #424245; font-size: 16px; }
.doc ul { padding-left: 20px; }
section { scroll-margin-top: 48px; }