:root {
  --bg: #0b0c10;
  --panel: #111217;
  --text: #e7e9ee;
  --muted: #a9afbd;
  --primary: #fe2c55; /* TikTok red */
  --accent: #20d5ec;  /* TikTok cyan */
  --ring: rgba(254,44,85,0.4);
  --success: #22c55e;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
  color: var(--text);
  background: radial-gradient(1200px 800px at 90% -20%, rgba(32,213,236,0.08), transparent 60%),
              radial-gradient(1200px 800px at -10% 120%, rgba(254,44,85,0.08), transparent 60%),
              var(--bg);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(1.2) blur(8px);
  background: rgba(11,12,16,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.3px;
}
.main-nav { display: flex; gap: 20px; align-items: center; }
.main-nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.main-nav a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--text);
  font-size: 22px;
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 16px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.btn-primary { background: linear-gradient(90deg, var(--primary), #ff5d7a); color: white; box-shadow: 0 0 0 0 transparent; }
.btn-primary:hover { filter: brightness(1.05); box-shadow: 0 0 0 6px var(--ring); }
.btn-ghost { color: var(--text); border: 1px solid rgba(255,255,255,0.12); }
.btn-ghost:hover { border-color: rgba(255,255,255,0.3); }

/* Hero */
.hero { padding: 72px 0 24px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero h1 { font-size: 44px; line-height: 1.1; margin: 0 0 12px; }
.subtitle { color: var(--muted); font-size: 18px; margin: 0 0 20px; }
.hero-cta { display: flex; gap: 12px; margin: 0 0 16px; flex-wrap: wrap; }
.trust-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 16px; color: var(--muted); }

.hero-media { display: flex; align-items: center; justify-content: center; }
.mockup { background: var(--panel); border: 1px solid rgba(255,255,255,0.08); border-radius: 16px; width: 100%; max-width: 460px; overflow: hidden; box-shadow: 0 10px 40px rgba(0,0,0,0.4); }
.mockup-status { background: rgba(32,213,236,0.1); color: #9aeaf2; padding: 10px 14px; font-weight: 600; border-bottom: 1px solid rgba(255,255,255,0.06); }
.mockup-body { padding: 12px 14px; display: grid; gap: 10px; }
.mockup .row { display: flex; align-items: center; justify-content: space-between; padding: 10px 12px; background: rgba(255,255,255,0.03); border-radius: 10px; }
.mockup .file { color: var(--text); }
.mockup .status { font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: 0.6px; }
.mockup .status.ok { color: var(--success); }
.mockup .status.up { color: #fbbf24; }

/* Features */
.features { padding: 56px 0; }
.features h2, .how h2, .faq h2 { font-size: 28px; margin: 0 0 20px; }
.grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.card { background: var(--panel); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 16px; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); }

/* How */
.how { padding: 56px 0; }
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.steps li { display: grid; grid-template-columns: 40px 1fr; gap: 12px; align-items: start; background: var(--panel); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 14px; }
.step-num { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; background: rgba(254,44,85,0.16); color: #ff9fb2; font-weight: 800; }
.steps h3 { margin: 0 0 6px; }
.steps p { margin: 0; color: var(--muted); }

/* CTA */
.cta { padding: 56px 0; }
.cta-inner { background: linear-gradient(180deg, rgba(32,213,236,0.12), rgba(254,44,85,0.12)); border: 1px solid rgba(255,255,255,0.14); border-radius: 16px; padding: 24px; text-align: center; }
.cta-form { display: grid; grid-template-columns: 1fr auto; gap: 10px; max-width: 560px; margin: 16px auto 0; }
.cta-form input { background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.18); border-radius: 12px; padding: 12px 14px; color: var(--text); outline: none; }
.cta-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px rgba(32,213,236,0.25); }
.cta-note { margin-top: 10px; color: var(--muted); font-size: 14px; }

/* FAQ */
.faq { padding: 56px 0 80px; }
.faq-list { display: grid; gap: 10px; }
.faq details { background: var(--panel); border: 1px solid rgba(255,255,255,0.08); border-radius: 14px; padding: 12px 14px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); margin: 10px 0 0; }

/* Footer */
.site-footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 18px 0; color: var(--muted); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.footer-nav { display: flex; gap: 14px; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .main-nav { position: fixed; inset: 64px 0 auto 0; background: rgba(11,12,16,0.96); border-bottom: 1px solid rgba(255,255,255,0.06); padding: 12px 20px 16px; display: none; flex-direction: column; gap: 12px; }
  .main-nav.show { display: flex; }
  .nav-toggle { display: inline-flex; }
  .cta-form { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
}