:root{
  --bg:#f6f7f9; --surface:#fff; --ink:#151a24; --muted:#667085; --line:#e4e7ec;
  --accent:#1f7ae0; --accent-ink:#fff; --bubble-me:#dff0ff; --bubble-bot:#fff;
  --radius:14px;
}
:root[data-theme="dark"]{
  --bg:#0f131a; --surface:#171c26; --ink:#eef1f6; --muted:#98a2b3; --line:#262d3a;
  --accent:#4a9bff; --accent-ink:#071223; --bubble-me:#1d3a5c; --bubble-bot:#1d2430;
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{font-family:'Vazirmatn',system-ui,sans-serif;background:var(--bg);color:var(--ink);line-height:1.9;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.nav{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:24px;padding:14px max(20px,calc((100% - 1080px)/2));background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.logo{font-weight:800;font-size:1.3rem;direction:ltr}
.logo span{color:var(--accent)}
.nav nav{display:flex;gap:20px;margin-inline-start:auto;color:var(--muted);font-size:.95rem}
.nav nav a:hover{color:var(--ink)}
.theme{background:none;border:1px solid var(--line);color:var(--ink);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:1rem}

main{max-width:1080px;margin:0 auto;padding:0 20px}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;padding:88px 0 72px}
h1{font-size:clamp(2rem,4.6vw,3.3rem);line-height:1.45;font-weight:800;letter-spacing:-.01em}
.hero p{color:var(--muted);margin:18px 0 28px;max-width:46ch;font-size:1.05rem}
.cta{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-weight:600;padding:10px 22px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px)}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:transparent}
.btn:disabled{opacity:.6;cursor:wait}

/* موکاپ چت - تنها جلوه‌ی بصری صفحه */
.phone{background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:14px;box-shadow:0 30px 60px -30px rgba(20,40,80,.35);max-width:340px;justify-self:center;width:100%}
.phone-bar{display:flex;align-items:center;gap:10px;padding:6px 6px 12px;border-bottom:1px solid var(--line)}
.phone-bar i{width:34px;height:34px;border-radius:50%;background:var(--accent)}
.phone-bar b{font-size:.95rem}
.phone-bar small{color:var(--muted);margin-inline-start:auto;font-size:.75rem}
.chat{display:flex;flex-direction:column;gap:8px;padding:14px 4px 4px;min-height:290px}
.msg-b{max-width:82%;padding:8px 13px;border-radius:16px;font-size:.88rem;line-height:1.7;animation:pop .25s ease both}
.msg-b.me{align-self:flex-start;background:var(--bubble-me);border-end-start-radius:4px}
.msg-b.bot{align-self:flex-end;background:var(--bubble-bot);border:1px solid var(--line);border-end-end-radius:4px}
.typing{align-self:flex-end;display:flex;gap:4px;padding:12px 14px;border:1px solid var(--line);border-radius:16px;background:var(--bubble-bot)}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:blink 1s infinite}
.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
@keyframes pop{from{opacity:0;transform:translateY(6px)}}
@keyframes blink{50%{opacity:.25}}

.section{padding:56px 0;border-top:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:28px}
h2{font-size:1.6rem;font-weight:800}
.filters{display:flex;gap:8px;flex-wrap:wrap}
.chip{font:inherit;font-size:.85rem;padding:4px 14px;border-radius:999px;border:1px solid var(--line);background:none;color:var(--muted);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:18px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:12px}
.card h3{font-size:1.1rem}
.card p{color:var(--muted);font-size:.92rem}
.meta{display:flex;gap:8px;font-size:.78rem;color:var(--muted)}
.meta span{border:1px solid var(--line);border-radius:6px;padding:0 8px}
.card ul{list-style:none;padding:0;font-size:.88rem;display:grid;gap:2px}
.card li::before{content:"✓";color:var(--accent);margin-inline-end:8px}
.buy{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.price{font-weight:800}.price small{font-weight:400;color:var(--muted);margin-inline-start:4px}
.muted{color:var(--muted)}

.how ol{list-style:none;padding:0;margin-top:24px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.how li{counter-increment:s;display:flex;flex-direction:column;gap:6px;padding-inline-start:44px;position:relative}
.how li::before{content:counter(s);position:absolute;inset-inline-start:0;top:2px;width:32px;height:32px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:700}
.how li span{color:var(--muted);font-size:.92rem}
.faq h2{margin-bottom:16px}
details{border-bottom:1px solid var(--line);padding:14px 0}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin-top:8px}

footer{max-width:1080px;margin:0 auto;padding:28px 20px 40px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted);font-size:.9rem}

dialog{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);color:var(--ink);padding:26px;width:min(420px,92vw);margin:auto}
dialog::backdrop{background:rgba(10,15,25,.5)}
dialog form{display:grid;gap:14px}
label{display:grid;gap:4px;font-size:.9rem}
input,textarea{font:inherit;padding:9px 12px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink)}
.row{display:flex;gap:10px}
.msg{min-height:1.4em;font-size:.88rem}
.msg.err{color:#d92d20}.msg.ok{color:#12a150}

@media(max-width:820px){
  .hero{grid-template-columns:1fr;padding:48px 0}
  .how ol{grid-template-columns:1fr}
  .nav nav{gap:14px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}