:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #16202c;
  --muted: #5b6676;
  --line: #e3e7ed;
  --accent: #0f9d8a;
  --accent-dark: #0b7a6b;
  --accent-soft: #e3f5f2;
  --warn-soft: #fff4e0;
  --radius: 14px;
  --max: 1100px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
}
img, svg { max-width: 100%; }
a { color: var(--accent-dark); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
header.site {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
header.site .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; color: var(--text); text-decoration: none; }
.brand svg { width: 30px; height: 30px; }
nav.main { display: flex; gap: 22px; align-items: center; }
nav.main a { color: var(--muted); text-decoration: none; font-size: .95rem; }
nav.main a:hover { color: var(--text); }
.btn {
  display: inline-block; background: var(--accent); color: #fff !important;
  padding: 12px 22px; border-radius: 10px; text-decoration: none; font-weight: 600;
  border: none; cursor: pointer; font-size: 1rem;
}
.btn:hover { background: var(--accent-dark); }
.btn.ghost { background: transparent; color: var(--text) !important; border: 1px solid var(--line); }
.btn.ghost:hover { background: var(--surface); }
nav.main .btn { padding: 8px 16px; font-size: .9rem; }

/* Hero */
.hero { padding: 80px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.eyebrow { display: inline-block; background: var(--accent-soft); color: var(--accent-dark); font-weight: 600; font-size: .85rem; padding: 6px 12px; border-radius: 999px; margin-bottom: 18px; }
h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); line-height: 1.15; margin: 0 0 18px; letter-spacing: -.02em; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0 0 28px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.trust { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 26px; color: var(--muted); font-size: .92rem; }
.trust span::before { content: "✓ "; color: var(--accent); font-weight: 700; }

.mock {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px; box-shadow: 0 20px 50px -25px rgba(16,32,44,.25);
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace; font-size: .85rem;
}
.mock .bar { display: flex; gap: 6px; margin-bottom: 14px; }
.mock .bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); display: block; }
.mock pre { margin: 0; white-space: pre-wrap; color: #334; }
.mock .k { color: var(--accent-dark); font-weight: 600; }
.mock .c { color: #8a94a3; }

/* Sections */
section { padding: 72px 0; }
section.alt { background: var(--surface); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 12px; letter-spacing: -.01em; }
.section-intro { color: var(--muted); max-width: 680px; margin: 0 0 40px; }

.grid { display: grid; gap: 20px; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px;
}
section.alt .card { background: var(--bg); }
.card h3 { margin: 10px 0 8px; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); font-size: .97rem; }
.icon { width: 42px; height: 42px; border-radius: 10px; background: var(--accent-soft); display: grid; place-items: center; }
.icon svg { width: 22px; height: 22px; stroke: var(--accent-dark); fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

ul.examples { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 28px; }
ul.examples li { padding-left: 28px; position: relative; }
ul.examples li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

.steps { counter-reset: s; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.step { position: relative; padding-top: 52px; }
.step::before {
  counter-increment: s; content: counter(s);
  position: absolute; top: 0; left: 0; width: 38px; height: 38px; border-radius: 50%;
  background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 700;
}
.step h3 { margin: 0 0 6px; font-size: 1.05rem; }
.step p { margin: 0; color: var(--muted); font-size: .95rem; }

.notice {
  background: var(--accent-soft); border: 1px solid #a8e0d6; border-radius: var(--radius);
  padding: 22px 24px; display: flex; gap: 16px; align-items: flex-start;
}
.notice svg { flex-shrink: 0; stroke: var(--accent-dark); }
.notice strong { display: block; margin-bottom: 4px; color: var(--accent-dark); }
.notice p { margin: 0; color: #24524b; }

.price { display: flex; flex-direction: column; }
.price .amount { font-size: 1.8rem; font-weight: 700; margin: 8px 0 4px; }
.price .amount small { font-size: .95rem; font-weight: 500; color: var(--muted); }
.price ul { padding-left: 20px; color: var(--muted); margin: 12px 0 0; font-size: .95rem; }
.price.featured { border: 2px solid var(--accent); }
.tag { font-size: .78rem; font-weight: 700; color: var(--accent-dark); text-transform: uppercase; letter-spacing: .05em; }

details { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 16px 20px; margin-bottom: 12px; }
section.alt details { background: var(--bg); }
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); margin: 10px 0 0; }

/* Systems */
.card.focus { border-top: 4px solid var(--accent); }
.card.focus p { color: var(--muted); }
h3.sub { margin: 36px 0 14px; font-size: 1.05rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
ul.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
ul.chips li { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 8px 16px; font-size: .95rem; }
section.tight { padding: 56px 0; }
.region { margin-top: 48px; max-width: 760px; }
.region p { color: var(--muted); margin: 0; }

/* Contact */
.contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 40px; }
form { display: grid; gap: 14px; }
label { font-weight: 600; font-size: .92rem; display: grid; gap: 6px; }
input, textarea, select {
  font: inherit; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--text);
}
textarea { min-height: 140px; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.small { font-size: .85rem; color: var(--muted); }

footer.site { padding: 36px 0; color: var(--muted); font-size: .9rem; }
footer.site .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer.site a { color: var(--muted); margin-left: 18px; }

/* Legal pages */
.legal { padding: 56px 0 72px; }
.legal .wrap { max-width: 780px; }
.legal h1 { font-size: 2rem; }
.legal h2 { font-size: 1.25rem; margin-top: 32px; }
.placeholder { background: #fff1c2; padding: 0 4px; border-radius: 4px; }

/* Mobile */
.brand, nav.main .btn { white-space: nowrap; }
@media (max-width: 900px) {
  nav.main a:not(.btn) { display: none; }
  .hero .wrap, .contact { grid-template-columns: 1fr; }
  .grid.three, .steps { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  nav.main a:not(.btn) { display: none; }
  .grid.three, .grid.two, .steps, ul.examples { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 40px; }
  section { padding: 52px 0; }
  .wrap { padding: 0 16px; }
  footer.site a { margin: 0 14px 0 0; }
}