:root {
  --primary: #10b981;
  --primary-dark: #047857;
  --primary-light: #ecfdf5;
  --accent: #f59e0b;
  --ink: #0b1712;
  --ink-soft: #3f4a45;
  --muted: #667169;
  --line: #dfe7e2;
  --bg: #ffffff;
  --bg-alt: #f5faf7;
  --dark-bg: #061410;
  --dark-bg-2: #0a2019;
  --dark-line: #163127;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(6, 20, 16, .05), 0 8px 24px rgba(6, 20, 16, .07);
  --shadow-lg: 0 20px 40px rgba(6, 20, 16, .16);
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'IBM Plex Sans', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: 'Space Grotesk', system-ui, sans-serif; line-height: 1.15; margin: 0; font-weight: 700; letter-spacing: -0.01em; }
p { margin: 0; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #04150f;
  box-shadow: 0 6px 18px rgba(16, 185, 129, .3);
}
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--primary); color: var(--primary-dark); }
.btn-lg { padding: 15px 30px; font-size: 16px; }
.btn-header { padding: 10px 20px; font-size: 14px; }
.btn-block { width: 100%; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dark-bg);
  border-bottom: 1px solid var(--dark-line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 19px;
  color: #fff;
  flex-shrink: 0;
}
.brand-logo { height: 26px; width: auto; display: block; }
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0 auto;
}
.main-nav a {
  font-size: 15px;
  font-weight: 500;
  color: #a9b6ae;
  transition: color .15s ease;
}
.main-nav a:hover { color: var(--primary); }

.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.lang-switch {
  display: flex;
  border: 1px solid var(--dark-line);
  border-radius: 999px;
  overflow: hidden;
}
.lang-btn {
  border: none;
  background: transparent;
  padding: 7px 13px;
  font-size: 13px;
  font-weight: 700;
  color: #7c8b82;
  cursor: pointer;
  transition: background .15s ease, color .15s ease;
}
.lang-btn.is-active { background: var(--primary); color: #04150f; }

.burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: 0;
  align-items: center;
  justify-content: center;
}
.burger span { width: 22px; height: 2px; background: #fff; border-radius: 2px; transition: transform .2s ease, opacity .2s ease; }

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--dark-bg);
  color: #fff;
  padding: 84px 0 68px;
  background-image:
    linear-gradient(rgba(16,185,129,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16,185,129,.08) 1px, transparent 1px);
  background-size: 42px 42px;
}
.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(620px 360px at 12% 0%, rgba(16,185,129,.28), transparent 62%),
    radial-gradient(520px 320px at 92% 15%, rgba(245,158,11,.14), transparent 60%);
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 1; text-align: center; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(16,185,129,.1);
  border: 1px solid rgba(16,185,129,.3);
  font-size: 13px;
  font-weight: 600;
  color: #a7f3d0;
  margin-bottom: 28px;
}
.hero-badge .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 4px rgba(52,211,153,.22);
}
.hero h1 {
  font-size: clamp(32px, 5vw, 55px);
  max-width: 840px;
  margin: 0 auto 22px;
}
.hero-sub {
  max-width: 620px;
  margin: 0 auto 36px;
  color: #94a89e;
  font-size: 17px;
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}
.hero .btn-ghost { color: #fff; border-color: rgba(255,255,255,.22); }
.hero .btn-ghost:hover { border-color: #fff; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 760px;
  margin: 0 auto;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,.1);
}
.stat-num { font-family: 'Space Grotesk', sans-serif; font-size: 26px; font-weight: 700; color: #fff; }
.stat-unit { font-size: 14px; font-weight: 600; color: #94a89e; margin-left: 2px; }
.stat-label { font-size: 13px; color: #94a89e; margin-top: 4px; }

/* Sections */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.eyebrow {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--primary-dark);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 12px;
}
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); margin-bottom: 14px; }
.section-head p { color: var(--muted); font-size: 16px; }

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--line);
  border-left: 3px solid transparent;
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-left-color: var(--primary); }
.feature-icon {
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  font-size: 21px;
  clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 25%);
  background: var(--primary-light);
  margin-bottom: 18px;
}
.feature-card h3 { font-size: 17px; margin-bottom: 8px; }
.feature-card p { color: var(--muted); font-size: 14.5px; }

/* Pricing tabs */
.tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.tab-btn {
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all .15s ease;
}
.tab-btn:hover { border-color: var(--primary); color: var(--primary-dark); }
.tab-btn.is-active { background: var(--ink); border-color: var(--ink); color: #fff; }
.tab-note {
  text-align: center;
  color: var(--muted);
  font-size: 13.5px;
  margin: 0 0 36px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.plan-card {
  position: relative;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.plan-card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--line);
  transition: background .18s ease;
}
.plan-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.plan-card:hover::before { background: var(--primary); }
.plan-card.is-popular { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16,185,129,.14); }
.plan-card.is-popular::before { background: var(--primary); }
.plan-badge {
  position: absolute;
  top: 14px; right: -30px;
  transform: rotate(45deg);
  background: var(--accent);
  color: #24160a;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 34px;
  white-space: nowrap;
}
.plan-name { font-family: 'Space Grotesk', sans-serif; font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.plan-cpu { font-size: 12.5px; color: var(--muted); margin-bottom: 18px; min-height: 32px; }
.plan-price { display: flex; align-items: baseline; gap: 6px; margin-bottom: 20px; }
.plan-price .amount { font-family: 'Space Grotesk', sans-serif; font-size: 34px; font-weight: 700; }
.plan-price .period { font-size: 14px; color: var(--muted); }
.plan-specs { flex: 1; margin-bottom: 22px; }
.plan-specs li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-soft);
  padding: 7px 0;
  border-top: 1px dashed var(--line);
}
.plan-specs li:first-child { border-top: none; }
.plan-specs .ico { color: var(--primary-dark); font-size: 13px; flex-shrink: 0; width: 16px; text-align: center; }
.plan-specs b { color: var(--ink); font-weight: 700; }

/* How it works */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 980px;
  margin: 0 auto;
}
.step { text-align: center; padding: 0 10px; }
.step-num {
  width: 44px; height: 44px;
  font-family: 'Space Grotesk', sans-serif;
  clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 100% 75%, 75% 100%, 25% 100%, 0% 75%, 0% 25%);
  background: var(--ink);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  margin: 0 auto 18px;
}
.step h3 { font-size: 17px; margin-bottom: 8px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* CTA banner */
.cta-banner {
  background: linear-gradient(120deg, var(--dark-bg), var(--dark-bg-2));
  color: #fff;
}
.cta-banner-inner {
  padding: 56px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-banner h2 { font-size: 26px; margin-bottom: 8px; }
.cta-banner p { color: #94a89e; max-width: 480px; }

/* FAQ */
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  padding: 20px 4px;
  font-size: 16px;
  font-weight: 600;
  font-family: 'Space Grotesk', sans-serif;
  color: var(--ink);
  cursor: pointer;
}
.faq-arrow { color: var(--muted); transition: transform .2s ease; flex-shrink: 0; }
.faq-item.is-open .faq-arrow { transform: rotate(45deg); color: var(--primary-dark); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
}
.faq-a p { color: var(--muted); font-size: 14.5px; padding: 0 4px 20px; }
.faq-item.is-open .faq-a { max-height: 480px; }

/* Footer */
.site-footer { background: var(--dark-bg); color: #b7c4bd; padding-top: 64px; }
.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 48px;
}
.footer-brand p { color: #647167; font-size: 14px; margin-top: 14px; max-width: 280px; }
.footer-col h4 { color: #fff; font-family: 'Space Grotesk', sans-serif; font-size: 14px; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: #8b9a91; font-size: 14px; transition: color .15s ease; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid var(--dark-line);
  padding: 24px 0 28px;
}
.footer-bottom p { font-size: 12.5px; color: #647167; }
.footer-bottom p:first-child { margin-bottom: 12px; max-width: 820px; line-height: 1.6; }
.footer-copy { font-size: 12.5px; }

/* Responsive */
@media (max-width: 980px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .main-nav { display: none; }
  .burger { display: flex; }
  .header-inner { height: 64px; }
  .lang-switch { order: 2; }
  .btn-header { display: none; }

  .site-header.is-open .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--dark-bg);
    border-bottom: 1px solid var(--dark-line);
    padding: 16px 24px 24px;
    gap: 16px;
  }
  .site-header.is-open .main-nav a { font-size: 16px; }

  .hero { padding: 56px 0 48px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .section { padding: 60px 0; }

  .features-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 380px; margin: 0 auto; }

  .cta-banner-inner { flex-direction: column; text-align: center; }
  .cta-banner p { margin: 0 auto; }

  .footer-inner { grid-template-columns: 1fr; gap: 36px; }
}