:root {
  --bg: #030308; --bg2: #0a0a14;
  --acc: #5b6af0; --acc2: #8b5cf6; --acc3: #c084fc; --gold: #f0c060;
  --txt: #e8e8f0; --mut: #9090b0;
  --card: rgba(255,255,255,.03); --border: rgba(255,255,255,.06);
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  background:var(--bg)!important; color:var(--txt)!important;
  font-family:-apple-system,BlinkMacSystemFont,'SF Pro Display','Helvetica Neue',system-ui,sans-serif;
  -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
.bg-grid{position:fixed;inset:0;pointer-events:none;z-index:0;background-image:radial-gradient(circle at 1px 1px,rgba(255,255,255,.03) 1px,transparent 0);background-size:40px 40px}
.bg-orb{position:fixed;border-radius:50%;filter:blur(120px);pointer-events:none;z-index:0;will-change:transform;transform:translateZ(0)}
.bg-orb-1{width:600px;height:600px;background:rgba(91,106,240,.12);top:-200px;left:-100px;animation:orb1 20s infinite}
.bg-orb-2{width:500px;height:500px;background:rgba(139,92,246,.1);bottom:-200px;right:-100px;animation:orb2 25s infinite}
.bg-orb-3{width:400px;height:400px;background:rgba(192,132,252,.08);top:50%;left:50%;transform:translate(-50%,-50%);animation:orb3 18s infinite}
@keyframes orb1{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(100px,80px) scale(1.2)}66%{transform:translate(-50px,-30px) scale(.9)}}
@keyframes orb2{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(-80px,-60px) scale(1.3)}66%{transform:translate(60px,40px) scale(.8)}}
@keyframes orb3{0%,100%{transform:translate(-50%,-50%) scale(1)}50%{transform:translate(-50%,-50%) scale(1.4)}}
.lang-dropdown{position:relative;display:inline-block}
.lang-current{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);color:var(--txt);padding:8px 20px;border-radius:20px;cursor:pointer;font-size:14px;font-weight:600;transition:all .2s;min-width:65px;text-align:center}
.lang-current:hover{background:rgba(255,255,255,.1);border-color:var(--acc)}
.lang-options{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#0a0a14;border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:6px;margin-top:8px;z-index:100;min-width:75px;text-align:center}
.lang-dropdown:hover .lang-options{display:block}
.lang-options button{display:block;width:100%;padding:8px 20px;background:transparent;border:none;color:var(--txt);cursor:pointer;font-size:13px;border-radius:10px;transition:all .2s}
.lang-options button:hover{background:rgba(255,255,255,.06);color:var(--acc)}
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
.header{display:flex;align-items:center;justify-content:center;gap:24px;padding:16px 0 8px;flex-wrap:wrap}
.header-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.header-logo-icon{font-size:38px;font-weight:700;font-family:'Times New Roman',serif;background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-logo-text{font-family:"Times New Roman",serif;font-size:18px;font-weight:700;color:#fff;letter-spacing:1px}
.header-cta{padding:10px 22px;background:linear-gradient(135deg,var(--acc),var(--acc2));border-radius:20px;color:#fff;font-weight:600;text-decoration:none;font-size:14px;transition:all .3s}
.header-cta:hover{transform:scale(1.05);box-shadow:0 4px 24px rgba(91,106,240,.4)}
.hero{text-align:center;padding:40px 0 50px;position:relative;z-index:1}
.hero-badge{display:inline-block;padding:5px 14px;background:var(--card);border:1px solid rgba(255,255,255,.08);border-radius:100px;font-size:11px;color:var(--acc2);margin-bottom:20px;letter-spacing:2px;text-transform:uppercase}
.hero h1{font-size:clamp(44px,10vw,88px);font-weight:900;letter-spacing:-3px;line-height:1.05;margin-bottom:8px}
.hero h1 .grad{font-family:"Times New Roman",serif;background:linear-gradient(135deg,#fff 0%,#5b6af0 40%,#8b5cf6 70%,#c084fc 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:1.3em;display:block;margin-bottom:.15em}
.hero h1 .gold{background:linear-gradient(135deg,var(--gold),#f0d080);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-size:.65em;font-weight:400;display:block;margin-bottom:.35em;letter-spacing:1px}
.hero-sub{font-size:20px;color:var(--mut);max-width:650px;margin:0 auto 28px;line-height:1.6}
.hero-buttons{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.btn{padding:16px 32px;border-radius:26px;font-size:16px;font-weight:600;text-decoration:none;transition:all .3s;cursor:pointer;border:none;display:inline-flex;align-items:center;gap:8px}
.btn-primary{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;box-shadow:0 4px 24px rgba(91,106,240,.3)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 8px 36px rgba(91,106,240,.5)}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.15);color:#fff}
.btn-ghost:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.03)}
.metrics{display:flex;gap:40px;justify-content:center;padding:20px 0 50px;flex-wrap:wrap;position:relative;z-index:1}
.metric{text-align:center}
.metric-num{font-size:36px;font-weight:800;background:linear-gradient(135deg,#fff,var(--acc2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.metric-label{font-size:13px;color:var(--mut);margin-top:4px}
.section{padding:60px 0;position:relative;z-index:1}
.section-tag{font-size:12px;text-transform:uppercase;letter-spacing:2px;color:var(--acc);margin-bottom:12px}
.section h2{font-size:clamp(28px,5vw,44px);font-weight:700;margin-bottom:16px;letter-spacing:-1px}
.section p{font-size:16px;color:var(--mut);max-width:600px;line-height:1.7}
.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-top:40px}
.feature-card{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:32px;transition:all .3s;position:relative;overflow:hidden;will-change:transform;content-visibility:auto;contain-intrinsic-size:200px}
.feature-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(91,106,240,.05),transparent);opacity:0;transition:opacity .3s}
.feature-card:hover{border-color:rgba(91,106,240,.25);transform:translateY(-4px)}
.feature-card:hover::before{opacity:1}
.feature-icon{width:44px;height:44px;margin-bottom:16px}
.feature-icon svg{width:100%;height:100%;stroke:#5b6af0;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.feature-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--mut);line-height:1.6;margin:0}
.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:20px;margin-top:40px}
.chat-demo{background:var(--bg2);border:1px solid var(--border);border-radius:20px;padding:14px}
.demo-label{font-size:11px;font-weight:600;color:var(--acc);margin-bottom:10px;letter-spacing:1px}
.chat-msg{display:flex;gap:10px;margin-bottom:14px}
.chat-msg.bot{justify-content:flex-start}
.chat-msg.user{justify-content:flex-end}
.chat-bubble{max-width:82%;padding:8px 12px;border-radius:26px;font-size:12px;line-height:1.4}
.chat-msg.bot .chat-bubble{background:var(--card);border:1px solid var(--border);border-bottom-left-radius:4px;color:var(--txt)}
.chat-msg.user .chat-bubble{background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;border-bottom-right-radius:4px}
.testimonials{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:40px}
.testimonial{background:var(--card);border:1px solid var(--border);border-radius:20px;padding:28px;content-visibility:auto;contain-intrinsic-size:150px}
.testimonial p{font-size:14px;color:var(--mut);line-height:1.7;margin:0 0 16px}
.testimonial .author{display:flex;align-items:center;gap:10px}
.testimonial .author-avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--acc),var(--acc2));display:flex;align-items:center;justify-content:center;font-size:14px;color:#fff;font-weight:600}
.testimonial .author-name{font-size:13px;font-weight:600}
.testimonial .author-age{font-size:11px;color:var(--mut)}
.cta-section{text-align:center;padding:100px 0;position:relative;z-index:1}
.cta-section h2{font-size:clamp(28px,5vw,48px);font-weight:800;margin-bottom:12px}
.cta-section p{font-size:18px;color:var(--mut);margin-bottom:32px}
.cta-card{display:inline-block;background:linear-gradient(135deg,rgba(91,106,240,.1),rgba(139,92,246,.1));border:1px solid rgba(91,106,240,.2);border-radius:20px;padding:40px 48px;max-width:500px}
.cta-card .btn{margin-top:20px}
.cta-phi{font-size:72px;font-weight:700;font-family:'Times New Roman',serif;background:linear-gradient(135deg,var(--acc),var(--acc2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px;line-height:1}
.cta-name{font-family:'Times New Roman',serif;font-size:22px;font-weight:700}
.cta-version{font-size:14px;color:var(--mut);margin-bottom:12px}
.footer{text-align:center;padding:40px 0;border-top:1px solid var(--border);color:var(--mut);font-size:13px;position:relative;z-index:1}
.footer a{color:var(--acc);text-decoration:none}
@media(max-width:768px){.hero{padding:30px 0}.hero h1{font-size:40px}.metrics{gap:20px}.cta-card{padding:24px}.bg-orb{filter:blur(40px)!important;animation-duration:30s!important}}
@media(prefers-reduced-motion:reduce){.bg-orb{animation:none!important}}

/* Лёгкий демо-чат */
.demo-chat-lite { display: flex; flex-direction: column; gap: 8px; }
.demo-msg { max-width: 80%; padding: 6px 10px; border-radius: 14px; font-size: 12px; line-height: 1.3; }
.demo-msg.bot { align-self: flex-start; background: var(--card); border: 1px solid var(--border); color: var(--txt); border-bottom-left-radius: 4px; }
.demo-msg.user { align-self: flex-end; background: linear-gradient(135deg, var(--acc), var(--acc2)); color: #fff; border-bottom-right-radius: 4px; }

/* ═══════════════════════════════════════════════════════ */
/* ДНЕВНАЯ ТЕМА — включается автоматически по системе   */
/* ═══════════════════════════════════════════════════════ */

/* Светлая тема по умолчанию (если нет dark-mode) */
body {
    --bg: #f5f5f7;
    --bg2: #ffffff;
    --txt: #1d1d1f;
    --mut: #6e6e73;
    --card: rgba(0,0,0,.03);
    --border: rgba(0,0,0,.06);
}

/* Тёмная тема принудительно */
body.dark-mode {
    --bg: #030308;
    --bg2: #0a0a14;
    --txt: #e8e8f0;
    --mut: #9090b0;
    --card: rgba(255,255,255,.03);
    --border: rgba(255,255,255,.06);
}

/* Тёмная тема по системным настройкам */
@media (prefers-color-scheme: dark) {
    body:not(.dark-mode-disabled) {
        --bg: #030308;
        --bg2: #0a0a14;
        --txt: #e8e8f0;
        --mut: #9090b0;
        --card: rgba(255,255,255,.03);
        --border: rgba(255,255,255,.06);
    }
}

/* Светлая тема по системным настройкам */
@media (prefers-color-scheme: light) {
    body:not(.dark-mode) {
        --bg: #f5f5f7;
        --bg2: #ffffff;
        --txt: #1d1d1f;
        --mut: #6e6e73;
        --card: rgba(0,0,0,.03);
        --border: rgba(0,0,0,.06);
    }
}

/* Адаптация элементов под светлую тему */
.header-cta {
    color: #fff;
}
body:not(.dark-mode) .header-logo-text {
    color: #1d1d1f;
}
body:not(.dark-mode) .hero h1 .grad {
    background: linear-gradient(135deg, #1d1d1f 0%, #5b6af0 40%, #8b5cf6 70%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
body:not(.dark-mode) .chat-demo {
    background: #f0f0f5;
    border-color: rgba(0,0,0,.08);
}
body:not(.dark-mode) .chat-msg.bot .chat-bubble {
    background: #fff;
    border-color: rgba(0,0,0,.1);
    color: #1d1d1f;
}
body:not(.dark-mode) .btn-ghost {
    color: #1d1d1f;
    border-color: rgba(0,0,0,.15);
}
body:not(.dark-mode) .lang-current {
    color: #1d1d1f;
    border-color: rgba(0,0,0,.15);
}
body:not(.dark-mode) .lang-options {
    background: #fff;
}
body:not(.dark-mode) .lang-options button {
    color: #1d1d1f;
}