:root {
  --teal: #16CA9D;
  --blue: #2560EA;
  --grad: linear-gradient(135deg, #16CA9D, #2560EA);
  --ink: #0f1720;
  --muted: #5b6672;
  --bg: #f6f8fb;
  --card: #ffffff;
  --line: #e6e9ef;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(15, 23, 32, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 248, 251, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.nav-links { display: flex; gap: 22px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; font-size: 15px; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  font-weight: 600; font-size: 15px; cursor: pointer; border: none;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { text-decoration: none; opacity: 0.94; }
.btn-ghost { background: var(--card); color: var(--ink); border: 1px solid var(--line); }
.btn-ghost:hover { text-decoration: none; border-color: #cfd6e0; }

/* Hero */
.hero { padding: 72px 0 40px; text-align: center; }
.hero .badge {
  display: inline-block; padding: 6px 14px; border-radius: 999px;
  background: rgba(37, 96, 234, 0.1); color: var(--blue);
  font-size: 13px; font-weight: 600; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(34px, 6vw, 56px); line-height: 1.08; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero p.lede { font-size: clamp(17px, 2.4vw, 21px); color: var(--muted); max-width: 640px; margin: 0 auto 30px; }
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* Screens */
.screens { display: flex; gap: 20px; justify-content: center; margin: 48px auto 0; flex-wrap: wrap; }
.screens img {
  width: 220px; max-width: 42vw; border-radius: 26px;
  box-shadow: var(--shadow); border: 1px solid var(--line);
}

/* Sections */
section { padding: 56px 0; }
.section-title { text-align: center; font-size: clamp(26px, 4vw, 34px); margin: 0 0 8px; letter-spacing: -0.01em; }
.section-sub { text-align: center; color: var(--muted); max-width: 560px; margin: 0 auto 40px; }

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 18px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px; box-shadow: var(--shadow);
}
.card .icon {
  width: 42px; height: 42px; border-radius: 11px; background: var(--grad);
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
  color: #fff; font-size: 20px;
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }

/* Privacy highlight */
.privacy-band { background: var(--card); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.privacy-band .container { display: flex; gap: 16px; align-items: center; justify-content: center; flex-wrap: wrap; text-align: center; }
.privacy-band strong { font-size: 18px; }

/* Content pages */
.page { max-width: 760px; margin: 0 auto; padding: 48px 20px 72px; }
.page h1 { font-size: 34px; letter-spacing: -0.01em; margin-bottom: 6px; }
.page .updated { color: var(--muted); margin-top: 0; margin-bottom: 32px; font-size: 15px; }
.page h2 { font-size: 21px; margin-top: 34px; }
.page p, .page li { color: #263040; }
.page ul { padding-left: 20px; }

/* Form */
.form-card { max-width: 620px; margin: 0 auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.field input, .field textarea {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px;
  font: inherit; color: var(--ink); background: #fbfcfe;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(37,96,234,0.12); }
.field textarea { min-height: 140px; resize: vertical; }
.hp { position: absolute; left: -9999px; }
.form-status { margin-top: 14px; font-size: 15px; min-height: 22px; }
.form-status.ok { color: #12855f; }
.form-status.err { color: #c0392b; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: 14px; }
.site-footer .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.site-footer .foot-links { display: flex; gap: 18px; }

@media (max-width: 560px) {
  .nav-links { gap: 14px; }
  .nav-links a.hide-sm { display: none; }
}