:root {
  color-scheme: dark;
  --bg: #090d13;
  --surface: #101720;
  --surface-soft: #151e29;
  --line: rgba(255, 255, 255, 0.09);
  --text: #f7fafc;
  --muted: #9ba8b8;
  --green: #19d99a;
  --green-dark: #08a976;
  --green-soft: rgba(25, 217, 154, 0.12);
  --max: 1160px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 74% 9%, rgba(14, 180, 126, 0.09), transparent 27rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .65rem 1rem;
  border-radius: .6rem;
  background: var(--green);
  color: #03140e;
  font-weight: 700;
}

.skip-link:focus { top: 1rem; }

.site-header {
  width: min(calc(100% - 40px), var(--max));
  height: 80px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand { display: inline-flex; align-items: center; gap: .7rem; font-size: 1.08rem; font-weight: 750; }
.brand img { width: 36px; height: 36px; border-radius: 9px; box-shadow: 0 0 22px rgba(25,217,154,.22); }
.site-header nav { display: flex; align-items: center; gap: 2rem; color: var(--muted); font-size: .9rem; }
.site-header nav a { transition: color .2s ease; }
.site-header nav a:hover { color: var(--text); }

.hero {
  width: min(calc(100% - 40px), var(--max));
  min-height: 650px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: .88fr 1.12fr;
  align-items: center;
  gap: 5rem;
  padding: 76px 0 95px;
}

.eyebrow, .section-heading > span, .privacy-copy > span, .cta > div > span {
  color: var(--green);
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.eyebrow { display: flex; align-items: center; gap: .55rem; }
.eyebrow span { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 13px var(--green); }

h1, h2, h3, p { margin-top: 0; }

h1 {
  margin: 1.25rem 0 1.35rem;
  font-size: clamp(3.1rem, 5.2vw, 5.3rem);
  line-height: 1.08;
  letter-spacing: -.055em;
}

h1 em { color: var(--green); font-style: normal; }
.hero-description { max-width: 35rem; color: var(--muted); font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2rem 0 1.5rem; }

.button {
  min-height: 48px;
  padding: 0 1.25rem;
  border: 1px solid transparent;
  border-radius: .75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .65rem;
  font-size: .92rem;
  font-weight: 700;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-2px); }
.button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.button-primary { background: var(--green); color: #03140e; box-shadow: 0 12px 38px rgba(25,217,154,.18); }
.button-primary:hover { background: #36e3aa; }
.button-secondary { border-color: var(--line); background: rgba(255,255,255,.025); }
.button-secondary:hover { border-color: rgba(255,255,255,.22); }

.meta-row { display: flex; align-items: center; gap: .7rem; color: #788697; font-size: .78rem; }
.meta-row i { width: 3px; height: 3px; border-radius: 50%; background: #465362; }

.hero-visual { position: relative; min-width: 0; }
.glow { position: absolute; inset: 8% 5% -5%; background: rgba(9, 199, 137, .2); filter: blur(80px); }
.window {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 1rem;
  background: #111720;
  box-shadow: 0 35px 80px rgba(0,0,0,.48), 0 0 0 1px rgba(0,0,0,.25);
  transform: perspective(1100px) rotateY(-3deg) rotateX(1deg);
}

.window-bar {
  height: 42px;
  padding: 0 .85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  color: #a5b0bd;
  font-size: .7rem;
}

.window-title { display: flex; align-items: center; gap: .4rem; }
.window-title img { width: 18px; height: 18px; border-radius: 5px; }
.window-controls { letter-spacing: .05em; color: #687483; }
.window > img { display: block; width: 100%; height: auto; }

.shortcut-card {
  position: absolute;
  right: -18px;
  bottom: -28px;
  z-index: 2;
  min-width: 185px;
  padding: .9rem 1rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: .9rem;
  background: rgba(20,28,38,.91);
  box-shadow: 0 18px 45px rgba(0,0,0,.35);
  backdrop-filter: blur(12px);
}

.shortcut-card > span { display: block; margin-bottom: .45rem; color: var(--muted); font-size: .68rem; }
.shortcut-card strong { display: flex; align-items: center; gap: .45rem; }
.shortcut-card b { color: #728091; font-weight: 500; }
kbd { padding: .28rem .58rem; border: 1px solid #3c4856; border-bottom-width: 3px; border-radius: .45rem; background: #0b1017; color: #f5f7f9; font: 650 .8rem/1 ui-monospace, monospace; }

.section { padding: 105px max(20px, calc((100% - var(--max)) / 2)); background: #0d1219; border-block: 1px solid rgba(255,255,255,.04); }
.section-heading { max-width: 570px; margin-bottom: 2.7rem; }
.section-heading h2, .privacy-copy h2, .cta h2 { margin: .65rem 0 .7rem; font-size: clamp(2rem, 3.4vw, 3.1rem); line-height: 1.18; letter-spacing: -.035em; }
.section-heading p, .privacy-copy p, .cta p { color: var(--muted); }

.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.feature-card {
  min-height: 230px;
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: linear-gradient(145deg, rgba(255,255,255,.035), rgba(255,255,255,.012));
  transition: transform .25s ease, border-color .25s ease;
}

.feature-card:hover { transform: translateY(-4px); border-color: rgba(25,217,154,.28); }
.feature-wide { position: relative; min-height: 245px; grid-column: span 2; display: grid; grid-template-columns: 52px 1fr; gap: 1rem; }
.feature-card:nth-child(4), .feature-card:nth-child(5) { min-height: 190px; grid-column: span 2; }
.feature-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: .75rem; background: var(--green-soft); color: var(--green); }
.feature-icon svg { width: 23px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.feature-card h3 { margin: .9rem 0 .55rem; font-size: 1.08rem; }
.feature-wide h3 { margin-top: .15rem; }
.feature-card p { color: var(--muted); font-size: .88rem; }
.mini-toolbar { position: absolute; left: 1.55rem; right: 1.55rem; bottom: 1.4rem; display: flex; gap: .5rem; }
.mini-toolbar span { width: 34px; height: 32px; display: grid; place-items: center; border: 1px solid var(--line); border-radius: .45rem; color: #9eacbb; background: #0d141c; font-size: .75rem; }
.mini-toolbar span:first-child { color: #051a12; background: var(--green); }

.privacy-section {
  width: min(calc(100% - 40px), 980px);
  margin: 0 auto;
  padding: 125px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 7rem;
}

.privacy-orbit { position: relative; aspect-ratio: 1; display: grid; place-items: center; }
.privacy-orbit::before { content: ""; position: absolute; inset: 19%; border-radius: 50%; background: radial-gradient(circle, rgba(25,217,154,.17), transparent 68%); filter: blur(20px); }
.orbit { position: absolute; border: 1px solid rgba(25,217,154,.17); border-radius: 50%; }
.orbit-one { inset: 14%; }
.orbit-two { inset: 29%; border-color: rgba(255,255,255,.08); }
.shield { position: relative; width: 105px; height: 105px; display: grid; place-items: center; border: 1px solid rgba(25,217,154,.3); border-radius: 2rem; background: #111e1d; box-shadow: 0 0 70px rgba(25,217,154,.14); transform: rotate(45deg); }
.shield svg { width: 51px; fill: rgba(25,217,154,.11); stroke: var(--green); stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; transform: rotate(-45deg); }
.privacy-copy ul { padding: 0; margin: 1.6rem 0 0; list-style: none; display: grid; gap: .75rem; font-size: .9rem; }
.privacy-copy li { display: flex; gap: .65rem; align-items: center; }
.privacy-copy li span { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; background: var(--green-soft); color: var(--green); font-size: .72rem; }

.cta {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto 85px;
  padding: 3.4rem 4rem;
  border-radius: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: linear-gradient(125deg, #0ba674, #18d596);
  color: #041a12;
  box-shadow: 0 25px 70px rgba(15,184,128,.16);
}

.cta > div > span { color: rgba(3,27,18,.62); }
.cta h2 { margin-bottom: .35rem; }
.cta p { margin-bottom: 0; color: rgba(3,27,18,.68); }
.button-light { flex: 0 0 auto; background: #f3fffb; color: #073d2c; box-shadow: 0 12px 30px rgba(3,58,40,.16); }

footer {
  width: min(calc(100% - 40px), var(--max));
  min-height: 110px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
  color: var(--muted);
  font-size: .78rem;
}

footer .brand { color: var(--text); }
footer .brand img { width: 30px; height: 30px; }
footer p { margin: 0; }
footer > div { justify-self: end; display: flex; gap: 1.5rem; }
footer a:hover { color: var(--text); }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 3.5rem; padding-top: 60px; }
  .hero-copy { max-width: 660px; }
  .hero-visual { width: min(100%, 690px); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-section { gap: 3rem; }
}

@media (max-width: 620px) {
  .site-header { height: 68px; }
  .site-header nav { gap: 1rem; }
  .site-header nav a:not(:last-child) { display: none; }
  .hero { min-height: auto; padding: 60px 0 88px; }
  h1 { font-size: clamp(2.8rem, 14vw, 4.2rem); }
  .hero-description { font-size: .98rem; }
  .hero-actions .button { flex: 1 1 145px; }
  .shortcut-card { right: 10px; bottom: -48px; }
  .section { padding-top: 85px; padding-bottom: 85px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-wide, .feature-card:nth-child(4), .feature-card:nth-child(5) { grid-column: auto; }
  .privacy-section { grid-template-columns: 1fr; gap: 1.5rem; padding: 85px 0; }
  .privacy-orbit { max-width: 330px; width: 100%; margin: 0 auto; }
  .cta { padding: 2.5rem 1.5rem; flex-direction: column; align-items: flex-start; }
  .button-light { width: 100%; }
  footer { padding: 2rem 0; grid-template-columns: 1fr auto; }
  footer p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}