:root {
  --bg: #f7f8fc; --panel: #fff; --line: #e5e8f1; --text: #131a2e; --muted: #626c86;
  --primary: #3b5bdb; --primary-2: #2f4ac0; --soft: #edf1ff; --accent: #12b5cb;
  --font: "Segoe UI", "Noto Sans Arabic", "Noto Kufi Arabic", Tahoma, "Geeza Pro", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b1020; --panel: #131a2f; --line: #222b47; --text: #e8ebf7; --muted: #9aa4c2; --primary: #6e8bff; --primary-2: #8aa0ff; --soft: #1b2448; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font); line-height: 1.7; font-size: 16px; }
a { color: var(--primary); text-decoration: none; }
h1, h2, h3 { line-height: 1.3; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
p { margin: 0 0 .8em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
.grid { display: grid; gap: 16px; }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.two { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 18px; padding: 22px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 18px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--text); cursor: pointer; font: inherit; }
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn.primary:hover { background: var(--primary-2); color: #fff; }
.btn.lg { padding: 14px 26px; font-size: 1.05rem; }
.btn.sm { padding: 6px 14px; font-size: .9rem; }

.nav { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav .row { justify-content: space-between; height: 64px; flex-wrap: nowrap; }
.logo { display: flex; gap: 10px; align-items: center; color: var(--text); white-space: nowrap; }
.mark { width: 34px; height: 34px; border-radius: 10px; background: linear-gradient(135deg, #5b7cfa, #22b8cf); color: #fff; display: grid; place-items: center; font-weight: 800; }
.links { display: flex; gap: 22px; }
.links a { color: var(--muted); }
.links a:hover { color: var(--text); }

.hero { padding: 70px 0 40px; text-align: center; background: radial-gradient(circle at 50% -10%, var(--soft), transparent 60%); }
.eyebrow { display: inline-block; padding: 4px 14px; border-radius: 20px; background: var(--soft); color: var(--primary); font-size: .9rem; }
.grad { background: linear-gradient(90deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { max-width: 720px; margin: 0 auto 22px; font-size: 1.12rem; color: var(--muted); }
.cta { justify-content: center; margin-bottom: 10px; }
.demo { max-width: 620px; margin: 36px auto 0; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); text-align: start; box-shadow: 0 20px 60px rgba(30, 50, 120, .12); overflow: hidden; }
.demo-head { padding: 10px 14px; border-bottom: 1px solid var(--line); display: flex; gap: 6px; }
.demo-head span { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.demo-body { padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.bubble { max-width: 85%; padding: 10px 14px; border-radius: 14px; }
.bubble.me { align-self: flex-start; background: var(--soft); }
.bubble.it { align-self: flex-end; background: var(--primary); color: #fff; }

.section { padding: 56px 16px 20px; }
.step .n { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; font-weight: 700; margin-bottom: 10px; }
.feat i { font-style: normal; font-size: 1.8rem; display: block; margin-bottom: 6px; }
.feat p, .step p { color: var(--muted); margin: 0; }
.dl .files { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.dl .file { border-top: 1px solid var(--line); padding-top: 10px; }
.dl .sha { font-family: Consolas, monospace; font-size: .72rem; color: var(--muted); direction: ltr; text-align: left; word-break: break-all; }
.note { margin-top: 16px; padding: 14px 18px; border-radius: 14px; background: var(--soft); color: var(--muted); font-size: .92rem; }
.plan ul { padding-inline-start: 20px; margin: 10px 0 18px; }
.plan li { margin-bottom: 6px; }
.tag { display: inline-block; padding: 2px 12px; border-radius: 20px; background: var(--soft); color: var(--primary); font-size: .85rem; margin-bottom: 8px; }
.tag.alt { background: #e3f6ec; color: #138a52; }
.assure { margin-top: 16px; }
.foot { display: flex; justify-content: space-between; padding: 30px 16px 40px; border-top: 1px solid var(--line); margin-top: 50px; flex-wrap: wrap; gap: 10px; }

dialog { border: 1px solid var(--line); border-radius: 18px; padding: 24px; background: var(--panel); color: var(--text); width: min(480px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(10, 15, 30, .5); }
dialog label { display: block; margin-bottom: 12px; font-size: .92rem; color: var(--muted); }
dialog input, dialog textarea { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }
dialog textarea { min-height: 90px; }
.msg { color: var(--primary); min-height: 1.2em; }

@media (max-width: 720px) {
  .links { display: none; }
  .hero { padding-top: 40px; }
}

/* buying, trial, account */
.price { font-size: 2rem; font-weight: 800; margin: 6px 0; }
.price small { font-size: .95rem; color: var(--muted); font-weight: 400; }
.toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 6px 0 14px; }
.toggle button { border: 0; background: var(--panel); color: var(--muted); padding: 8px 16px; font: inherit; cursor: pointer; }
.toggle button.on { background: var(--primary); color: #fff; }
.key-box { font-family: Consolas, monospace; font-size: 1.3rem; direction: ltr; text-align: center; padding: 16px; border-radius: 14px; background: var(--soft); border: 2px dashed var(--primary); margin: 12px 0; user-select: all; word-break: break-all; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.msg.ok { color: #138a52; }
.acct dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.acct dt { color: var(--muted); }
.acct dd { margin: 0; }
.bar { height: 8px; border-radius: 6px; background: var(--line); overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--primary); }
select.inp, input.inp { padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }