:root {
  color-scheme: dark;
  --bg: #10131a;
  --bg-deep: #0b0e14;
  --surface: #171b24;
  --surface-2: #1c212c;
  --text: #f5f7fb;
  --muted: #a9b0bf;
  --line: #2b3240;
  --accent: #6968ff;
  --accent-hover: #7b7aff;
  --wrap: 1120px;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.55; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(calc(100% - 48px), var(--wrap)); margin-inline: auto; }

.site-header {
  width: min(calc(100% - 48px), var(--wrap));
  height: 76px;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; letter-spacing: -0.02em; }
.brand-mark { width: 29px; height: 29px; display: flex; align-items: end; gap: 3px; padding: 6px; border: 1px solid #7776ff; border-radius: 7px; }
.brand-mark i { display: block; width: 3px; border-radius: 2px; background: var(--accent); }
.brand-mark i:nth-child(1) { height: 8px; }
.brand-mark i:nth-child(2) { height: 15px; }
.brand-mark i:nth-child(3) { height: 11px; }
nav { display: flex; align-items: center; gap: 30px; color: #d6dae3; font-size: 14px; }
nav a:not(.button):hover { color: white; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border: 1px solid var(--accent); border-radius: 9px; background: var(--accent); color: white; font-weight: 650; transition: background .18s ease, transform .18s ease; }
.button:hover { background: var(--accent-hover); transform: translateY(-1px); }
.button-secondary { background: transparent; border-color: #5a6270; }
.button-secondary:hover { background: var(--surface-2); }
.button-small { min-height: 38px; padding-inline: 17px; border-radius: 8px; }

.hero { padding: 86px 0 108px; display: grid; grid-template-columns: minmax(0, 1fr) 460px; gap: 72px; align-items: center; }
.hero-copy { max-width: 630px; }
h1 { margin: 0; max-width: 690px; font-size: clamp(48px, 6vw, 76px); line-height: 1.02; letter-spacing: -0.055em; }
.hero-copy > p { max-width: 650px; margin: 26px 0 0; color: #c4cad5; font-size: 19px; }
.actions { display: flex; gap: 12px; margin-top: 32px; }
.hero-copy .support { margin-top: 18px; color: var(--muted); font-size: 14px; }
.product-frame { margin: 0; min-height: 520px; display: grid; place-items: center; position: relative; border: 1px solid #586171; border-radius: 20px; background: linear-gradient(145deg, #1b2130, #11151e); box-shadow: 0 30px 80px rgba(0,0,0,.42); overflow: hidden; }
.product-frame::before { content: ""; position: absolute; inset: 0; background: radial-gradient(circle at 50% 40%, rgba(105,104,255,.16), transparent 55%); }
.product-frame img { position: relative; width: 62%; height: auto; border-radius: 14px; box-shadow: 0 20px 60px rgba(0,0,0,.58); }

.features { padding: 105px 0 118px; }
h2 { margin: 0; font-size: clamp(34px, 4vw, 50px); line-height: 1.08; letter-spacing: -0.04em; }
.features > h2 { max-width: 620px; }
.feature-list { margin-top: 66px; border-top: 1px solid var(--line); }
.feature-list article { display: grid; grid-template-columns: 72px 1fr; gap: 22px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.feature-list article > span { color: #7776ff; font-variant-numeric: tabular-nums; }
h3 { margin: 0 0 7px; font-size: 22px; letter-spacing: -0.02em; }
.feature-list p { margin: 0; max-width: 760px; color: var(--muted); }

.privacy { border-block: 1px solid var(--line); background: var(--surface); }
.privacy-inner { padding-block: 82px; display: grid; grid-template-columns: 100px 1fr; gap: 38px; align-items: center; }
.privacy-inner p { max-width: 720px; margin: 15px 0 0; color: #bbc2ce; font-size: 18px; }
.shield { width: 82px; height: 92px; display: grid; place-items: center; color: #8a89ff; font-size: 34px; border: 3px solid var(--accent); border-radius: 40px 40px 50px 50px; }

.download { padding: 112px 0 118px; text-align: center; }
.download p { color: var(--muted); font-size: 18px; }
.actions.centered { justify-content: center; }
.download .requirements { margin-top: 20px; font-size: 13px; }
footer { border-top: 1px solid var(--line); color: #8f97a7; font-size: 13px; }
.footer-inner { min-height: 88px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }

@media (max-width: 850px) {
  .site-header nav a:not(.button) { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 62px; gap: 52px; }
  .hero-copy { max-width: none; }
  .product-frame { min-height: 480px; }
}

@media (max-width: 560px) {
  .wrap, .site-header { width: min(calc(100% - 32px), var(--wrap)); }
  .site-header { height: 66px; }
  .brand { font-size: 15px; }
  .hero { padding: 50px 0 78px; }
  h1 { font-size: 45px; }
  .hero-copy > p { font-size: 17px; }
  .actions { flex-direction: column; }
  .product-frame { min-height: 400px; border-radius: 15px; }
  .product-frame img { width: 72%; }
  .features { padding: 78px 0 86px; }
  .feature-list { margin-top: 44px; }
  .feature-list article { grid-template-columns: 42px 1fr; gap: 10px; }
  .privacy-inner { grid-template-columns: 1fr; padding-block: 68px; }
  .shield { width: 65px; height: 72px; }
  .download { padding: 78px 0 84px; }
  .footer-inner { padding-block: 25px; flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}