:root {
  --bg: #090c0b;
  --bg-alt: #0e1512;
  --panel: #121a17;
  --text: #eef5f1;
  --muted: #93a79c;
  --border: #1f2b26;
  --accent: #10b981;
  --accent-dark: #059669;
  --accent-light: rgba(16, 185, 129, 0.14);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

.container { width: min(960px, calc(100% - 40px)); margin: auto; }
.container-narrow { width: min(760px, calc(100% - 40px)); margin: auto; }

/* ---- header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9, 12, 11, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav { height: 68px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { display: flex; align-items: center; gap: 9px; text-decoration: none; font-weight: 800; font-size: 16.5px; }
.brand-mark { width: 30px; height: 30px; border-radius: 9px; background: var(--accent); display: grid; place-items: center; }
.brand-mark svg { width: 16px; height: 16px; }
.main-nav { display: flex; align-items: center; gap: 22px; }
.main-nav a:not(.btn) { color: var(--muted); font-size: 14px; font-weight: 600; text-decoration: none; }
.main-nav a:not(.btn):hover { color: var(--text); }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 15px;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #04140e; box-shadow: 0 10px 26px rgba(16, 185, 129, 0.28); transition: background-color .15s ease, transform .15s ease; }
.btn-primary:hover { background: #34d399; }
.btn-primary:active { transform: translateY(1px); }
.btn-lg { min-height: 54px; padding: 0 28px; font-size: 16.5px; }
.btn-block { width: 100%; }

/* ---- hero ---- */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  background:
    radial-gradient(640px 360px at 50% -10%, rgba(16, 185, 129, 0.16), transparent 70%),
    var(--bg);
}
.eyebrow {
  display: inline-block;
  font-size: 12.5px; font-weight: 800; letter-spacing: 0.08em;
  color: #6ee7b7;
  background: var(--accent-light);
  border: 1px solid rgba(16, 185, 129, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
h1 { font-size: clamp(32px, 5.5vw, 50px); line-height: 1.14; letter-spacing: -0.02em; margin: 0 0 20px; font-weight: 800; }
h2 { font-size: clamp(24px, 3.4vw, 32px); line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 12px; font-weight: 800; }
h3 { font-size: 17px; font-weight: 800; margin: 0 0 8px; }
.lead { font-size: 18px; color: var(--muted); max-width: 600px; margin: 0 auto 30px; }

.hero .btn { margin-bottom: 18px; }
.trust-row { color: var(--muted); font-size: 13.5px; font-weight: 600; }

/* ---- sections ---- */
.section { padding: 64px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 600px; margin: 0 auto 36px; }
.section-head p { color: var(--muted); font-size: 15.5px; margin-top: 8px; }

/* ---- value tiles ---- */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.value-tile {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
}
.value-tile .tile-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent-light); color: #6ee7b7;
  display: grid; place-items: center;
  margin: 0 auto 14px;
  font-size: 20px;
}
.value-tile p { font-size: 14px; color: var(--muted); margin: 0; }
.value-note { text-align: center; font-size: 12.5px; color: var(--muted); margin-top: 20px; }

/* ---- why strip ---- */
.why-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; text-align: center; }
.why-item { font-size: 13px; font-weight: 700; color: var(--text); }
.why-item .why-icon { font-size: 20px; margin-bottom: 8px; }

/* ---- plans table ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 16px; }
table { width: 100%; border-collapse: collapse; background: var(--panel); min-width: 620px; }
th, td { padding: 16px 20px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: top; }
th { font-size: 12.5px; letter-spacing: 0.03em; text-transform: uppercase; color: #6ee7b7; background: rgba(16,185,129,0.06); }
td { color: var(--muted); font-size: 14.5px; }
td strong { color: var(--text); }
tr:last-child td { border-bottom: 0; }

/* ---- pros / know-before ---- */
.split-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.info-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 26px; }
.info-card h3 { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.info-card ul { margin: 0; padding-left: 20px; display: flex; flex-direction: column; gap: 10px; }
.info-card li { font-size: 14.5px; color: var(--muted); }
.info-card.pros h3 { color: #6ee7b7; }
.info-card.know h3 { color: #fbbf24; }

/* ---- use cases ---- */
.usecase-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.usecase-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 20px; }
.usecase-card .tile-icon { width: 38px; height: 38px; border-radius: 10px; background: var(--accent-light); color: #6ee7b7; display: grid; place-items: center; margin-bottom: 12px; font-size: 17px; }
.usecase-card h3 { font-size: 15px; margin-bottom: 6px; }
.usecase-card p { font-size: 13.5px; color: var(--muted); margin: 0; }

/* ---- faq ---- */
.faq-list { max-width: 680px; margin: 0 auto; }
details {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  margin-bottom: 10px;
  padding: 0 18px;
}
summary { cursor: pointer; font-weight: 700; padding: 16px 0; font-size: 15px; }
summary::marker { color: var(--accent); }
details p { color: var(--muted); padding: 0 0 16px; margin: 0; font-size: 14.5px; }

/* ---- final cta ---- */
.final-cta { text-align: center; padding: 64px 0; background: linear-gradient(160deg, #064e3b, #022c22); border-top: 1px solid var(--border); }
.final-cta p { color: #a7f3d0; margin-bottom: 26px; font-size: 16px; }

/* ---- footer ---- */
footer { padding: 24px 0 32px; border-top: 1px solid var(--border); }
.footer-inner { text-align: center; }
.copyright { font-size: 12px; color: var(--muted); margin: 0; }

@media (max-width: 760px) {
  .value-grid { grid-template-columns: 1fr; }
  .why-strip { grid-template-columns: 1fr 1fr; }
  .split-grid { grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr 1fr; }
  .main-nav a:not(.btn) { display: none; }
}
@media (max-width: 460px) {
  .why-strip { grid-template-columns: 1fr; }
  .usecase-grid { grid-template-columns: 1fr; }
  h1 { font-size: 30px; }
}