:root {
  color-scheme: light dark;
  --bg: #f7f9fb; --card: #fff; --ink: #1f2933; --ink2: #4b5563; --muted: #6b7785;
  --line: #e3e8ee; --soft: #eef2f6;
  --blue: #1c9bf0; --blue-d: #1479c4; --blue-soft: #e3f3ff;
  --green: #4cc22e; --green-d: #3a9a22; --green-soft: #e6f8df;
  --pro: #7c4dff; --pro-d: #5e35d6; --pro-soft: #efe9ff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111820; --card: #1a232d; --ink: #eef2f6; --ink2: #c5ced8; --muted: #93a0ae;
    --line: #2d3945; --soft: #212c37; --blue-soft: #14344d; --green-soft: #1d3a17; --pro-soft: #2a2350;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 500 17px/1.6 "Nunito", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-d); }
h1, h2, h3 { line-height: 1.15; letter-spacing: -.015em; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(34px, 6vw, 56px); font-weight: 800; }
h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; }
h3 { font-size: 19px; font-weight: 800; }
p { margin: 0; }
.wrap { width: min(1080px, 100% - 32px); margin-inline: auto; }
.muted { color: var(--muted); }
.center { text-align: center; }

/* ---------- header / footer ---------- */
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 0; }
.nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--ink); text-decoration: none; }
.nav .brand img { width: 34px; height: 34px; }
.nav nav { display: flex; align-items: center; gap: 18px; font-weight: 700; font-size: 15px; }
.nav nav a { color: var(--ink2); text-decoration: none; }
.nav nav a:hover { color: var(--blue-d); }
@media (max-width: 640px) { .nav nav a.hide-sm { display: none; } }
footer { margin-top: 80px; padding: 28px 0 40px; border-top: 2px solid var(--line); font-size: 15px; color: var(--muted); }
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; }
footer a { color: var(--muted); }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 13px 22px; border-radius: 16px; text-decoration: none; cursor: pointer;
  font: inherit; font-size: 15px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em;
  color: #fff; background: var(--green); border: 2px solid var(--green-d); border-bottom-width: 5px;
}
.btn:hover { filter: brightness(1.04); }
.btn:active { transform: translateY(3px); border-bottom-width: 2px; margin-bottom: 3px; }
.btn.ghost { color: var(--ink2); background: var(--card); border-color: var(--line); }
.btn.pro { background: var(--pro); border-color: var(--pro-d); }
.btn[aria-disabled="true"] { opacity: .55; cursor: default; pointer-events: none; }
.btn:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--blue) 50%, transparent); outline-offset: 3px; border-radius: 8px; }
.pill { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 13px; font-weight: 800; letter-spacing: .04em; background: var(--blue-soft); color: var(--blue-d); }
.pill.pro { background: var(--pro); color: #fff; }

/* ---------- hero ---------- */
.hero { padding: 40px 0 20px; text-align: center; }
.hero p.lead { max-width: 640px; margin: 18px auto 0; font-size: clamp(18px, 2.4vw, 21px); color: var(--ink2); }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 28px; }
.hero .note { margin-top: 12px; font-size: 14px; color: var(--muted); }
.shot { margin: 40px auto 0; border: 2px solid var(--line); border-radius: 20px; overflow: hidden; box-shadow: 0 24px 60px rgba(15, 30, 50, .14); background: var(--card); }

/* ---------- sections ---------- */
section { padding: 64px 0 0; }
section > .wrap > h2 { text-align: center; }
section > .wrap > p.sub { text-align: center; max-width: 620px; margin: 12px auto 0; color: var(--ink2); }
.grid { display: grid; gap: 16px; margin-top: 32px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { padding: 22px; background: var(--card); border: 2px solid var(--line); border-radius: 20px; }
.card h3 { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.card p, .card li { color: var(--ink2); font-size: 16px; }
.num { display: inline-grid; place-items: center; width: 30px; height: 30px; flex: none; border-radius: 50%; background: var(--blue); color: #fff; font-size: 15px; font-weight: 800; }
.ticks { list-style: none; margin: 14px 0 0; padding: 0; display: grid; gap: 9px; }
.ticks li { position: relative; padding-left: 28px; }
.ticks li::before {
  content: "✓"; position: absolute; left: 0; top: 3px; width: 19px; height: 19px; border-radius: 50%;
  display: grid; place-items: center; font-size: 11px; font-weight: 800; color: #fff; background: var(--green);
}
.plan { display: flex; flex-direction: column; }
.plan .price { font-size: 34px; font-weight: 800; margin: 6px 0 2px; }
.plan .price small { font-size: 16px; font-weight: 700; color: var(--muted); }
.plan .btn { margin-top: 20px; text-align: center; }
.plan.featured { border-color: var(--pro); box-shadow: 0 0 0 4px color-mix(in srgb, var(--pro) 16%, transparent); }
.callout { margin-top: 32px; padding: 24px; border-radius: 20px; background: var(--green-soft); border: 2px solid color-mix(in srgb, var(--green) 40%, transparent); }
.callout h3 { margin-bottom: 6px; }
code { font: 600 14px/1.5 ui-monospace, Consolas, monospace; background: var(--soft); padding: 2px 6px; border-radius: 6px; }
details { padding: 16px 20px; background: var(--card); border: 2px solid var(--line); border-radius: 16px; }
details + details { margin-top: 10px; }
summary { cursor: pointer; font-weight: 800; }
details p { margin-top: 10px; color: var(--ink2); font-size: 16px; }
.faq { max-width: 760px; margin: 32px auto 0; }

/* ---------- long-form pages ---------- */
.prose { max-width: 760px; margin: 24px auto 0; }
.prose h1 { font-size: clamp(30px, 5vw, 42px); }
.prose h2 { font-size: 24px; margin-top: 36px; text-align: left; }
.prose p, .prose li { color: var(--ink2); margin-top: 12px; }
.prose ul { padding-left: 22px; margin: 4px 0 0; }
.prose table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 16px; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--line); vertical-align: top; }
.prose .tablewrap { overflow-x: auto; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }