:root {
  color-scheme: dark;
  --bg: #02070a;
  --panel: rgba(7, 20, 25, 0.86);
  --panel-2: rgba(11, 32, 39, 0.92);
  --line: rgba(0, 255, 220, 0.18);
  --line-strong: rgba(0, 255, 220, 0.58);
  --text: #f4fbff;
  --muted: #9fb4bd;
  --accent: #16f0d2;
  --accent-2: #42ddff;
  --warning: #f4c66e;
  --danger: #ff8f88;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(90deg, transparent 0 92%, rgba(22, 240, 210, 0.06) 92% 93%, transparent 93%),
    radial-gradient(circle at 78% 28%, rgba(22, 240, 210, 0.22), transparent 330px),
    radial-gradient(circle at 28% 0%, rgba(66, 221, 255, 0.11), transparent 380px),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 240, 210, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 240, 210, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, transparent, black 42%, black 100%);
}
a { color: inherit; text-decoration: none; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 0 8vw;
  background: rgba(2, 7, 10, 0.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}
.brand, .nav-actions, nav, .checks, .hero-actions { display: flex; align-items: center; }
.brand { gap: 12px; font-size: 19px; font-weight: 900; }
.brand img { width: 38px; height: 38px; filter: drop-shadow(0 0 18px rgba(22, 240, 210, 0.45)); }
nav { gap: 28px; color: var(--muted); font-weight: 700; }
nav a:hover, nav a:first-child { color: var(--accent); }
.nav-actions { gap: 12px; }
.ghost, .download-small {
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--line);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}
.download-small, .primary, .copy-button {
  border: 0;
  background: linear-gradient(135deg, var(--accent), #5bf7df);
  color: #02100e;
  box-shadow: 0 0 28px rgba(22, 240, 210, 0.25);
}

main { width: min(1440px, calc(100% - 64px)); margin: 0 auto; }
.hero {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(560px, 1.12fr);
  align-items: center;
  gap: 64px;
  padding: 58px 0 42px;
}
.product-pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(22, 240, 210, 0.08);
  color: var(--accent);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.product-pill span {
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent);
  color: #02100e;
  letter-spacing: 0;
}
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}
h1, h2 { margin: 0; letter-spacing: 0; }
h1 { max-width: 760px; font-size: clamp(52px, 7vw, 88px); line-height: 0.98; }
h1 span { display: block; color: var(--accent); text-shadow: 0 0 30px rgba(22, 240, 210, 0.35); }
h2 { font-size: clamp(30px, 4vw, 46px); line-height: 1; }
.lead { max-width: 660px; margin: 24px 0 0; color: var(--muted); font-size: 20px; line-height: 1.6; }
.checks { flex-wrap: wrap; gap: 24px; margin-top: 28px; font-weight: 800; }
.checks span::before { content: "⊙"; color: var(--accent); margin-right: 8px; }
.hero-actions { flex-wrap: wrap; gap: 16px; margin-top: 34px; }
.primary, .secondary, .copy-button {
  min-height: 54px;
  padding: 0 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  cursor: pointer;
}
.secondary { border: 1px solid var(--line-strong); background: rgba(4, 18, 23, 0.78); color: var(--text); }
.safe-download { margin: 16px 0 0; color: var(--muted); }
.safe-download::before { content: "▱"; color: var(--accent); margin-right: 8px; }

.app-preview {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(3, 14, 18, 0.96), rgba(4, 12, 15, 0.96));
  box-shadow: 0 0 55px rgba(22, 240, 210, 0.24), inset 0 0 40px rgba(22, 240, 210, 0.04);
}
.app-preview::after {
  content: "";
  position: absolute;
  inset: -40% -30% auto auto;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(22, 240, 210, 0.22), transparent 64%);
}
.window-bar {
  height: 58px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
}
.window-bar strong { margin-right: auto; }
.window-bar span { width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--muted); }
.preview-body { display: grid; grid-template-columns: 170px 1fr; min-height: 380px; }
.side-menu { display: grid; align-content: start; gap: 14px; padding: 24px; border-right: 1px solid var(--line); color: var(--muted); }
.side-menu b { color: #02100e; background: var(--accent); padding: 12px; border-radius: 5px; }
.dashboard { padding: 28px; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-top: 22px; }
.metrics div, .activity, .band, .key-card, .review-form, .review-card, .notice {
  background: linear-gradient(180deg, rgba(13, 33, 40, 0.86), rgba(5, 17, 22, 0.92));
  border: 1px solid var(--line);
}
.metrics div { display: grid; gap: 7px; padding: 18px; border-radius: 6px; }
.metrics span, .metrics small { color: var(--muted); }
.metrics strong { font-size: 25px; }
.metrics div:last-child strong { color: var(--accent); }
.activity { margin-top: 22px; padding: 16px; border-radius: 6px; }
.activity p { display: flex; justify-content: space-between; gap: 20px; color: var(--muted); }
.activity p span { width: 10px; height: 10px; border: 2px solid var(--accent); border-radius: 50%; margin-top: 5px; }
.activity b { color: var(--accent); }
.activity em { color: var(--danger); font-style: normal; }

.band {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  padding: 22px;
  box-shadow: 0 0 36px rgba(22, 240, 210, 0.08);
}
.band-item { display: grid; grid-template-columns: 42px 1fr; gap: 12px; align-items: center; min-height: 72px; }
.band-item strong { color: var(--accent); font-size: 28px; text-align: center; }
.band-item span { font-weight: 800; }

.keys-section, .reviews-section, .support { padding: 84px 0; }
.section-heading { max-width: 760px; margin: 0 auto 32px; text-align: center; }
.section-heading p:not(.eyebrow), .support p { color: var(--muted); line-height: 1.65; }
.keys-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.key-card { display: grid; gap: 12px; padding: 16px; }
.key-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: 13px; }
.key-status {
  padding: 3px 8px;
  border: 1px solid rgba(22, 240, 210, 0.34);
  color: var(--accent);
  font-weight: 900;
  text-transform: uppercase;
  font-size: 11px;
}
.key-value { overflow-wrap: anywhere; font-family: "Cascadia Mono", "Consolas", monospace; font-size: 14px; line-height: 1.5; }
.key-countdown {
  min-height: 22px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.key-card.is-used {
  border-color: rgba(244, 198, 110, 0.38);
  background: linear-gradient(180deg, rgba(34, 30, 17, 0.82), rgba(10, 17, 20, 0.94));
}
.key-card.is-used .key-status {
  border-color: rgba(244, 198, 110, 0.42);
  color: var(--warning);
}
.key-card.is-used .key-countdown { color: var(--warning); }
.copy-button { width: 100%; border: 0; font: inherit; }
.copy-button:disabled {
  cursor: not-allowed;
  color: rgba(244, 251, 255, 0.5);
  background: rgba(159, 180, 189, 0.12);
  box-shadow: none;
}

.reviews-layout { display: grid; grid-template-columns: minmax(320px, 0.78fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.review-form { display: grid; gap: 16px; padding: 20px; }
.rating-summary { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.rating-summary strong { color: var(--accent); font-size: 42px; line-height: 1; }
.rating-summary span, .form-status, .review-comment, .empty-reviews { color: var(--muted); }
.review-form label, .review-form fieldset { display: grid; gap: 8px; margin: 0; font-weight: 800; }
.review-form fieldset { padding: 0; border: 0; }
.review-form legend { padding: 0 0 8px; }
.review-form input, .review-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: #061216;
  color: var(--text);
  font: inherit;
  padding: 12px;
  outline: none;
}
.review-form input:focus, .review-form textarea:focus { border-color: var(--accent); }
.stars { display: grid; grid-template-columns: repeat(5, 44px); gap: 6px; }
.stars button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  background: #061216;
  color: var(--muted);
  cursor: pointer;
  font-size: 24px;
}
.stars button.is-active { border-color: var(--warning); color: var(--warning); background: rgba(244, 198, 110, 0.1); }
.form-status { min-height: 22px; margin: 0; font-size: 14px; }
.reviews-list { display: grid; gap: 12px; }
.review-card { display: grid; gap: 10px; padding: 16px; }
.review-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.review-name { font-weight: 900; }
.review-date { color: var(--muted); font-size: 13px; }
.review-stars { color: var(--warning); }
.review-comment, .empty-reviews { line-height: 1.6; }

.support { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 0.7fr); gap: 34px; align-items: start; }
.notice { border-color: rgba(244, 198, 110, 0.36); background: rgba(244, 198, 110, 0.08); padding: 20px; }
.notice strong { color: var(--warning); }
footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(1440px, calc(100% - 64px));
  margin: 0 auto;
  padding: 30px 0;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

@media (max-width: 1120px) {
  .hero, .reviews-layout, .support { grid-template-columns: 1fr; }
  .band { grid-template-columns: repeat(2, 1fr); }
  .app-preview { max-width: 820px; }
}
@media (max-width: 820px) {
  .topbar { padding: 0 20px; }
  nav, .ghost { display: none; }
  main { width: min(100% - 32px, 1440px); }
  .hero { min-height: auto; }
  .preview-body { grid-template-columns: 1fr; }
  .side-menu { display: none; }
  .metrics, .keys-grid, .band { grid-template-columns: 1fr; }
  h1 { font-size: 48px; }
}