:root {
  --bg: #ffffff;
  --bg-alt: #f3f6fa;
  --ink: #0f1b2d;
  --muted: #4a5a70;
  --line: #d9e1ec;
  --brand: #0b2545;
  --accent: #1463ff;
  --accent-ink: #ffffff;
  --card: #ffffff;
  --note-bg: #eef4ff;
  --radius: 14px;
  --maxw: 1080px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a1220;
    --bg-alt: #0e1a2e;
    --ink: #e8eef8;
    --muted: #a6b4c8;
    --line: #22324c;
    --brand: #e8eef8;
    --accent: #5b92ff;
    --accent-ink: #07101f;
    --card: #0f1c31;
    --note-bg: #12233f;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }
.center { text-align: center; }

.skip {
  position: absolute; left: -999px; top: 8px;
  background: var(--brand); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 10;
}
.skip:focus { left: 8px; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 19px; color: var(--brand); text-decoration: none; }
nav { display: flex; align-items: center; gap: 4px 18px; flex-wrap: wrap; justify-content: flex-end; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
nav a.btn { color: var(--ink); }

/* buttons */
.btn {
  display: inline-block; padding: 11px 20px; border-radius: 10px; font-weight: 600; font-size: 16px;
  text-decoration: none; border: 1px solid transparent; line-height: 1.2;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { background: var(--bg-alt); }
.btn-quiet { border-color: var(--line); padding: 8px 14px; font-size: 15px; }
.btn-quiet:hover { background: var(--bg-alt); }

/* hero */
.hero { padding: 84px 0 72px; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); }
.eyebrow {
  display: inline-block; margin: 0 0 18px; padding: 5px 12px; border-radius: 999px;
  background: var(--note-bg); color: var(--accent); font-size: 14px; font-weight: 600;
}
h1 { font-size: clamp(34px, 6vw, 58px); line-height: 1.08; letter-spacing: -0.02em; margin: 0 0 20px; color: var(--brand); max-width: 16em; }
.lead { font-size: clamp(18px, 2.2vw, 21px); color: var(--muted); max-width: 40em; margin: 0 0 30px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }
.fine { font-size: 14px; color: var(--muted); margin: 0; }

/* sections */
.section { padding: 72px 0; }
.section.alt { background: var(--bg-alt); }
h2 { font-size: clamp(26px, 4vw, 36px); line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 10px; color: var(--brand); }
.section-lead { color: var(--muted); font-size: 18px; margin: 0 0 36px; max-width: 42em; }
.center .section-lead { margin-left: auto; margin-right: auto; }

.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card h3 { margin: 4px 0 8px; font-size: 19px; color: var(--brand); }
.card p { margin: 0 0 10px; font-size: 16px; color: var(--ink); }
.num { color: var(--accent); font-weight: 700; font-size: 14px; letter-spacing: 0.08em; margin: 0; }
.note { font-size: 14px !important; color: var(--muted) !important; background: var(--note-bg); border-radius: 8px; padding: 8px 10px; margin-top: 12px !important; }

.checks { list-style: none; margin: 24px 0 0; padding: 0; display: grid; gap: 14px; }
.checks li { position: relative; padding-left: 34px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--accent);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M8.2 13.6 4.6 10l-1.4 1.4 5 5 9-9-1.4-1.4z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M8.2 13.6 4.6 10l-1.4 1.4 5 5 9-9-1.4-1.4z'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* pricing */
.prices { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); max-width: 760px; margin: 0 auto 20px; }
.price { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.price h3 { margin: 0 0 6px; font-size: 19px; color: var(--brand); }
.amount { font-size: 44px; font-weight: 700; line-height: 1.1; margin: 0; color: var(--ink); }
.amount span { font-size: 17px; font-weight: 500; color: var(--muted); margin-left: 4px; }
.alt-price { color: var(--muted); margin: 4px 0 16px; font-size: 15px; }
.price ul { margin: 0; padding-left: 20px; font-size: 16px; }
.price li { margin: 6px 0; }
.center .btn { margin-top: 12px; }

/* faq */
details { border-top: 1px solid var(--line); padding: 4px 0; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; color: var(--brand); }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; float: right; font-weight: 400; font-size: 22px; line-height: 1; color: var(--muted); }
details[open] summary::after { content: "\2212"; }
details p { margin: 0 0 16px; color: var(--muted); }

.contact { text-align: center; background: var(--bg-alt); }

/* interest form */
.form { display: grid; gap: 14px; margin: 26px 0 14px; padding: 24px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.form .row { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; color: var(--muted); }
.form input:not([type="checkbox"]), .form textarea {
  font: inherit; font-weight: 400; font-size: 16px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 9px; padding: 10px 12px; width: 100%;
}
.form input:focus, .form textarea:focus { outline: 3px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
.form .check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: 14px; }
.form .check input { margin-top: 4px; width: 18px; height: 18px; flex: none; }
.form button { justify-self: start; cursor: pointer; font-family: inherit; }
.form button:disabled { opacity: 0.6; cursor: wait; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.status { margin: 0; min-height: 1.4em; font-size: 15px; font-weight: 600; }
.status.ok { color: #137a3a; }
.status.bad { color: #b3261e; }
@media (prefers-color-scheme: dark) {
  .status.ok { color: #5fd48a; }
  .status.bad { color: #ff8a80; }
}

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 26px 0; font-size: 14px; color: var(--muted); }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 20px; }
.foot p { margin: 0; }
.foot a { color: var(--muted); margin-left: 16px; }
.foot p:last-child a:first-child { margin-left: 0; }

@media (max-width: 640px) {
  .hero { padding: 56px 0 48px; }
  .section { padding: 52px 0; }
  nav a:not(.btn) { display: none; }
  nav a[href="#pricing"] { display: inline; }
}

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