:root {
  --bg: #0B1425;
  --panel: #121E34;
  --panel-2: #22324D;
  --text: #F1F5FF;
  --muted: #8D9DB8;
  --blue: #8DB1FF;
  --primary: #2F5BD8;
  --primary-hover: #4170F0;
  --input: #0A1222;
  --line: #22324D;
  --ok: #4ADE9A; --ok-bg: #0F2F2C; --ok-line: #1E5B4A;
  --warn: #FBBF24; --warn-bg: #2B2410; --warn-line: #6B5216;
  --err: #F87171; --err-bg: #2E1219; --err-line: #6B2430;
  --max: 1160px;
  --font: 'Segoe UI Variable Display', 'Segoe UI', system-ui, -apple-system, Roboto, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: #0B1425; }
body {
  margin: 0; color: var(--text); min-height: 100vh;
  background: linear-gradient(135deg, #13213B 0%, #0B1425 100%) fixed;
  font-family: var(--font); line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: auto; }
.site-header {
  position: sticky; top: 0; z-index: 20; backdrop-filter: blur(18px);
  background: rgba(11,20,37,.85); border-bottom: 1px solid var(--line);
}
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; font: 700 1.25rem var(--font); letter-spacing: -.04em; }
.brand-mark { width: 36px; height: 36px; border-radius: 9px; display: block; object-fit: contain; }
.brand span:last-child { color: var(--blue); }
.nav-links { display: flex; align-items: center; gap: 22px; color: var(--muted); font-size: .93rem; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-cta, .button {
  display: inline-flex; justify-content: center; align-items: center; gap: 9px;
  padding: 11px 17px; border-radius: 10px; font-weight: 700; font-size: .92rem;
  border: 1px solid transparent; transition: .2s ease; cursor: pointer;
}
.nav-cta, .button.primary { color: #fff; background: var(--primary); }
.nav-cta:hover, .button.primary:hover { background: var(--primary-hover); }
.button.secondary { border-color: var(--line); background: rgba(255,255,255,.035); color: var(--text); }
.button.secondary:hover { border-color: rgba(113,164,255,.5); background: rgba(91,140,255,.09); }
.menu-toggle { display: none; background: none; border: 1px solid var(--line); color: white; border-radius: 9px; padding: 8px 11px; font-size: 1.1rem; }
.hero { padding: 100px 0 76px; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; gap: 55px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; color: #a9c4ff; background: rgba(91,140,255,.1); border: 1px solid rgba(91,140,255,.22); border-radius: 99px; padding: 6px 12px; font-size: .78rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: #61e2b0; box-shadow: 0 0 12px #61e2b0; }
h1,h2,h3 { font-family: var(--font); line-height: 1.12; letter-spacing: -.045em; }
h1 { font-size: clamp(3rem, 6vw, 5.3rem); margin: 22px 0; max-width: 720px; }
.gradient-text { color: var(--blue); }
.lead { color: var(--muted); font-size: 1.13rem; max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.microcopy { color: #71839f; font-size: .82rem; margin-top: 17px; }
.visual {
  position: relative; min-height: 390px; border: 1px solid rgba(145,177,235,.2); border-radius: 23px;
  padding: 17px; background: linear-gradient(145deg, rgba(26,43,70,.94), rgba(11,20,35,.96));
  box-shadow: 0 30px 90px rgba(0,0,0,.3), inset 0 1px rgba(255,255,255,.05);
  transform: perspective(1000px) rotateY(-5deg) rotateX(2deg);
}
.window-top { display: flex; align-items: center; gap: 7px; padding: 3px 3px 17px; border-bottom: 1px solid var(--line); color: #8194b1; font-size: .75rem; }
.window-top i { width: 7px; height: 7px; border-radius: 50%; background: #637795; }
.window-title { margin-left: auto; margin-right: auto; }
.mock-layout { display: grid; grid-template-columns: 105px 1fr; min-height: 300px; }
.mock-side { border-right: 1px solid var(--line); padding: 19px 10px 0 2px; }
.mock-logo { font: 700 1rem var(--font); color: #a9c4ff; margin-bottom: 23px; }
.mock-link { font-size: .68rem; color: #8092ad; padding: 8px; border-radius: 7px; margin: 5px 0; }
.mock-link.selected { background: rgba(91,140,255,.17); color: #d9e6ff; }
.mock-main { padding: 22px 18px; }
.mock-main h3 { font-size: 1.05rem; margin: 0 0 5px; letter-spacing: -.02em; }
.mock-main p { font-size: .69rem; color: #8fa1bc; margin: 0 0 18px; }
.mock-input { padding: 10px 11px; background: #0a1425; border: 1px solid #263d60; color: #9eb3d3; border-radius: 7px; font-size: .68rem; }
.mock-result { margin-top: 13px; padding: 13px; border: 1px solid rgba(69,211,166,.22); background: rgba(40,175,133,.07); border-radius: 8px; }
.mock-result strong { color: #6fe0b6; font-size: .7rem; }
.mock-result small { display: block; color: #8fa1bc; font-size: .64rem; margin-top: 4px; }
.mock-stats { display: flex; gap: 9px; margin-top: 13px; }
.mock-stat { flex: 1; padding: 10px; background: rgba(255,255,255,.035); border: 1px solid var(--line); border-radius: 8px; }
.mock-stat b { display: block; font-size: .85rem; color: #dce8ff; }
.mock-stat span { color: #8294af; font-size: .6rem; }
.section { padding: 75px 0; }
.section-head { max-width: 650px; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3.15rem); margin: 13px 0; }
.section-head p { color: var(--muted); margin: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 17px; }
.card { border: 1px solid var(--line); border-radius: 16px; padding: 24px; background: linear-gradient(145deg, rgba(20,34,57,.8), rgba(13,23,39,.78)); }
.card-icon { width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: #9fc0ff; background: rgba(91,140,255,.13); font-size: 1.2rem; }
.card h3 { font-size: 1.15rem; margin: 19px 0 8px; letter-spacing: -.025em; }
.card p { color: var(--muted); font-size: .93rem; margin: 0; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 55px; align-items: center; }
.code-panel { background: #0b1423; border: 1px solid var(--line); border-radius: 16px; padding: 22px; overflow: hidden; }
.code-bar { color: #8295b2; font-size: .75rem; border-bottom: 1px solid var(--line); padding-bottom: 13px; margin-bottom: 15px; }
.code-panel pre { margin: 0; color: #b8d0f5; font: .82rem/1.9 ui-monospace, SFMono-Regular, Consolas, monospace; white-space: pre-wrap; }
.code-blue { color: #83b1ff; } .code-green { color: #79dfbb; } .code-muted { color: #71839f; }
.callout { padding: 35px; border: 1px solid rgba(104,159,255,.25); border-radius: 20px; background: radial-gradient(circle at 100% 0, rgba(73,133,255,.2), transparent 48%), #101c30; display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.callout h2 { font-size: 1.8rem; margin: 0 0 8px; }
.callout p { color: var(--muted); margin: 0; }
.page-hero { padding: 76px 0 45px; }
.page-hero h1 { font-size: clamp(2.7rem, 5vw, 4.3rem); margin: 18px 0; }
.page-hero .lead { max-width: 760px; }
.feature-list { display: grid; gap: 14px; }
.feature-row { display: grid; grid-template-columns: 52px 1fr; gap: 17px; padding: 22px; background: rgba(17,29,48,.7); border: 1px solid var(--line); border-radius: 14px; }
.feature-row h3 { margin: 2px 0 6px; font-size: 1.08rem; }
.feature-row p { margin: 0; color: var(--muted); font-size: .92rem; }
.notice { padding: 17px 19px; border-left: 3px solid #79a8ff; border-radius: 8px; background: rgba(91,140,255,.08); color: #c3d4f2; font-size: .9rem; }
.site-footer { margin-top: 65px; border-top: 1px solid var(--line); padding: 30px 0; color: #8192ac; font-size: .86rem; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a:hover { color: var(--text); }
@media (max-width: 850px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; gap: 35px; }
  .visual { max-width: 560px; width: 100%; transform: none; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 650px) {
  .wrap { width: min(100% - 30px, var(--max)); }
  .nav { min-height: 66px; }
  .menu-toggle { display: block; }
  .nav-cta { display: none; }
  .nav-links { display: none; position: absolute; top: 66px; left: 0; right: 0; padding: 18px 22px 22px; background: #0B1425; border-bottom: 1px solid var(--line); flex-direction: column; align-items: stretch; gap: 13px; }
  .nav-links.open { display: flex; }
  .hero { padding: 55px 0 50px; }
  h1 { font-size: 3rem; }
  .grid-3 { grid-template-columns: 1fr; }
  .section { padding: 55px 0; }
  .callout { align-items: flex-start; flex-direction: column; padding: 25px; }
  .mock-layout { grid-template-columns: 82px 1fr; }
  .mock-main { padding: 18px 12px; }
}

.hero.single { grid-template-columns: 1fr; }
.visual { transform: none; background: linear-gradient(135deg, #13213B, #0B1425); border-color: #26364F; border-radius: 16px; }
.mock-link.selected { background: #1B3560; color: #fff; }
.mock-input { background: var(--input); border-color: #24344F; color: #E6ECFA; display: flex; justify-content: space-between; align-items: center; }
.check-btn { background: var(--primary); color: #fff; padding: 4px 12px; border-radius: 6px; font-size: .68rem; font-weight: 600; cursor: pointer; transition: .2s ease; }
.check-btn:hover { background: var(--primary-hover); }
.state { border: 1px solid; border-radius: 10px; padding: 13px 15px; margin-top: 13px; }
.state strong { display: block; font-size: .82rem; }
.state small { display: block; font-size: .68rem; color: #9FB0CC; margin-top: 3px; }
.state.ok { background: var(--ok-bg); border-color: var(--ok-line); } .state.ok strong { color: var(--ok); }
.state.warn { background: var(--warn-bg); border-color: var(--warn-line); } .state.warn strong { color: var(--warn); }
.state.err { background: var(--err-bg); border-color: var(--err-line); } .state.err strong { color: var(--err); }
.mock-stat { background: var(--panel); border-color: var(--line); text-align: left; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 0; }
.chip { padding: 6px 14px; border-radius: 8px; border: 1px solid var(--line); background: #0E182B; color: #AEBBD3; font-size: .85rem; }
.panel { border: 1px solid var(--line); border-radius: 14px; padding: 22px; background: var(--panel); }
.panel h3 { margin: 0 0 8px; font-size: 1.1rem; }
.panel p { margin: 0; color: var(--muted); font-size: .93rem; }
.stack { display: grid; gap: 14px; }
.mono { font-family: Consolas, ui-monospace, SFMono-Regular, monospace; font-size: .88rem; word-break: break-all; background: var(--input); border: 1px solid #24344F; border-radius: 8px; padding: 11px 13px; color: #E6ECFA; margin: 10px 0 0; }
.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.table th { color: var(--muted); font-weight: 600; font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; }
.table td:first-child { white-space: nowrap; }
.app-card { border: 1px solid var(--ok-line); background: var(--ok-bg); border-radius: 12px; padding: 20px 22px; display: grid; gap: 10px; }
.app-card h3 { margin: 0; color: var(--ok); font-size: 1rem; }
.app-card p { margin: 0; color: #9FB0CC; font-size: .92rem; }
.app-card .nav-cta { justify-self: end; }
.form { display: grid; gap: 14px; max-width: 620px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; }
.form input, .form textarea { font: inherit; color: #E6ECFA; background: var(--input); border: 1px solid #24344F; border-radius: 10px; padding: 12px 14px; }
.form input:focus, .form textarea:focus { outline: none; border-color: #4C7DFF; }
.form textarea { min-height: 150px; resize: vertical; }
.form button { justify-self: start; border: 0; }
.qr { width: 220px; max-width: 100%; border-radius: 10px; background: #fff; padding: 8px; display: block; margin: 12px 0; }
.small { color: var(--muted); font-size: .88rem; }
.small a { color: var(--blue); text-decoration: underline; }
.footer-links { display: flex; gap: 20px; }
@media (max-width: 650px) { .nav-links { background: #0B1425; } .app-card .nav-cta { justify-self: stretch; } }
.download-dialog { border: 1px solid var(--line); border-radius: 16px; background: var(--panel); color: var(--text); padding: 28px; width: min(420px, calc(100% - 30px)); }
.download-dialog::backdrop { background: rgba(5,9,18,.7); }
.download-dialog h2 { margin: 0 0 6px; font-size: 1.5rem; }
.download-dialog p { margin: 0 0 20px; color: var(--muted); }
.download-options { display: grid; grid-template-columns: 1fr; gap: 12px; margin-bottom: 14px; }
.download-options .button { flex-direction: column; gap: 2px; padding: 16px 10px; }
.download-options small { font-weight: 500; font-size: .75rem; opacity: .85; }
.download-cancel { width: 100%; }