*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
--primary:#2AABEE;--primary-light:#54C0F2;--primary-dark:#1E8AC4;
--accent:#8B5CF6;
--bg:#f2f8fc;--bg-alt:#e6f0f8;--surface:#fff;
--text:#0f172a;--text-secondary:#475569;--text-tertiary:#94a3b8;
--glass-bg:rgba(255,255,255,0.5);--glass-border:rgba(255,255,255,0.7);
--glass-shadow:0 8px 32px rgba(42,171,238,0.07);
--glass-blur:22px;
--radius:22px;--radius-sm:14px;--radius-xs:8px;
--transition:0.3s cubic-bezier(.4,0,.2,1);
--header-h:70px;
}
[data-theme="dark"]{
--bg:#050d16;--bg-alt:#0b1a2b;--surface:#0f1d2e;
--text:#e2e8f0;--text-secondary:#94a3b8;--text-tertiary:#64748b;
--glass-bg:rgba(255,255,255,0.035);--glass-border:rgba(255,255,255,0.07);
--glass-shadow:0 8px 32px rgba(0,0,0,0.35);
--primary-light:#62c8f5;
}
html{scroll-behavior:smooth;scroll-padding-top:var(--header-h)}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden;transition:background var(--transition),color var(--transition)}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}a{color:inherit;text-decoration:none}ul{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 30px;border-radius:100px;font-weight:600;font-size:.95rem;transition:all var(--transition);white-space:nowrap}
.btn--primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 4px 20px rgba(42,171,238,0.3)}
.btn--primary:hover{box-shadow:0 8px 32px rgba(42,171,238,0.45);transform:translateY(-2px)}
.btn--outline{border:1.5px solid var(--glass-border);color:var(--text);background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.btn--outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn--lg{padding:18px 40px;font-size:1.05rem}

/* HEADER */
.header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);transition:all var(--transition)}
.header.scrolled{background:var(--glass-bg);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border-bottom:1px solid var(--glass-border);box-shadow:0 2px 16px rgba(42,171,238,0.05)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:10px}
.logo__icon{color:var(--primary)}
.logo__text{font-size:1.1rem;font-weight:700;letter-spacing:-.01em}
.nav__list{display:flex;gap:28px}
.nav__link{font-size:.88rem;font-weight:500;color:var(--text-secondary);transition:color var(--transition);position:relative}
.nav__link:hover{color:var(--primary)}
.header__actions{display:flex;align-items:center;gap:12px}
.theme-toggle{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--glass-bg);backdrop-filter:blur(12px);border:1px solid var(--glass-border);color:var(--text-secondary);transition:all var(--transition)}
.theme-toggle:hover{color:var(--primary);border-color:var(--primary)}
.theme-toggle__moon{display:none}
[data-theme="dark"] .theme-toggle__sun{display:none}
[data-theme="dark"] .theme-toggle__moon{display:block}
.burger{display:none;flex-direction:column;gap:5px;width:24px;padding:8px 0}
.burger span{display:block;height:2px;background:var(--text);border-radius:2px;transition:all var(--transition)}

/* HERO */
.hero{position:relative;padding:calc(var(--header-h) + 80px) 0 80px;overflow:hidden}
.hero--bg{background:linear-gradient(180deg,rgba(0,0,0,0.55),rgba(0,0,0,0.7)),url('../hero.png') center center/contain no-repeat;background-color:var(--bg);border-top:1px solid rgba(255,255,255,0.12);border-bottom:1px solid rgba(255,255,255,0.12);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),inset 0 -1px 0 rgba(255,255,255,0.08)}
[data-theme="dark"] .hero--bg{background:linear-gradient(180deg,rgba(0,0,0,0.6),rgba(0,0,0,0.75)),url('../hero.png') center center/contain no-repeat;background-color:var(--bg)}
.hero__inner{position:relative;z-index:2;text-align:center;display:flex;flex-direction:column;align-items:center}
.hero__content{max-width:700px}
.hero__pill{display:inline-block;padding:8px 20px;border-radius:100px;font-size:.78rem;font-weight:600;background:var(--glass-bg);backdrop-filter:blur(12px);border:1px solid var(--glass-border);color:var(--primary);margin-bottom:28px;letter-spacing:.03em}
.hero__title{font-size:clamp(2.4rem,5.5vw,3.8rem);font-weight:900;line-height:1.08;letter-spacing:-.04em;margin-bottom:20px}
.glow-text{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__subtitle{font-size:1.1rem;color:rgba(255,255,255,0.88);line-height:1.7;margin-bottom:36px;max-width:580px;margin-left:auto;margin-right:auto}
.hero__cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
.hero__counters{display:flex;gap:48px;justify-content:center}
.hero__counter{display:flex;flex-direction:column;align-items:center}
.hero__counter strong{font-size:1.4rem;font-weight:800;color:var(--primary)}
.hero__counter span{font-size:.78rem;color:rgba(255,255,255,0.72);font-weight:500}

/* ORBS (decorative bubbles - unique to Telegram) */
.orb{position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.orb--1{width:480px;height:480px;top:-140px;right:-80px;background:radial-gradient(circle at 35% 35%,rgba(42,171,238,0.18),transparent 65%);filter:blur(60px)}
.orb--2{width:320px;height:320px;bottom:-60px;left:-100px;background:radial-gradient(circle at 40% 40%,rgba(139,92,246,0.14),transparent 65%);filter:blur(50px)}
.orb--3{width:220px;height:220px;top:45%;right:10%;background:radial-gradient(circle at 30% 30%,rgba(42,171,238,0.12),transparent 65%);filter:blur(40px)}
.orb--4{width:380px;height:380px;top:5%;left:-120px;background:radial-gradient(circle at 35% 35%,rgba(139,92,246,0.1),transparent 65%);filter:blur(55px)}
.orb--5{width:420px;height:420px;bottom:-80px;right:-120px;background:radial-gradient(circle at 35% 35%,rgba(42,171,238,0.12),transparent 65%);filter:blur(60px)}
.orb--6{width:500px;height:500px;top:50%;left:50%;transform:translate(-50%,-50%);background:radial-gradient(circle at 40% 40%,rgba(42,171,238,0.1),rgba(139,92,246,0.06) 60%,transparent 80%);filter:blur(70px)}
[data-theme="dark"] .orb--1{background:radial-gradient(circle at 35% 35%,rgba(42,171,238,0.12),transparent 65%)}
[data-theme="dark"] .orb--2{background:radial-gradient(circle at 40% 40%,rgba(139,92,246,0.1),transparent 65%)}

/* SECTIONS */
.section{padding:100px 0;position:relative}
.section--alt{background:var(--bg-alt);transition:background var(--transition)}
.section--with-bg > .container,.final-cta--bg > .container{position:relative;z-index:2}
.section--with-bg,.final-cta--bg{background-color:#000;border-top:1px solid rgba(255,255,255,0.12);border-bottom:1px solid rgba(255,255,255,0.12);box-shadow:inset 0 1px 0 rgba(255,255,255,0.08),inset 0 -1px 0 rgba(255,255,255,0.08)}
.section--download-bg{background:linear-gradient(180deg,rgba(0,0,0,0.72),rgba(0,0,0,0.84)),url('../download.png') center center/cover no-repeat}
.section--faq-bg{background:linear-gradient(180deg,rgba(0,0,0,0.76),rgba(0,0,0,0.88)),url('../faq.png') center center/cover no-repeat}
[data-theme="dark"] .section--download-bg{background:linear-gradient(180deg,rgba(0,0,0,0.76),rgba(0,0,0,0.88)),url('../download.png') center center/cover no-repeat}
[data-theme="dark"] .section--faq-bg{background:linear-gradient(180deg,rgba(0,0,0,0.8),rgba(0,0,0,0.9)),url('../faq.png') center center/cover no-repeat}
.section__head{text-align:center;margin-bottom:56px}
.section__title{font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:800;letter-spacing:-.02em;margin-bottom:10px}
.section__sub{font-size:1rem;color:rgba(255,255,255,0.78);max-width:500px;margin:0 auto}

/* CARDS GRID */
.cards{display:grid;gap:20px}
.cards--3{grid-template-columns:repeat(3,1fr)}
.cards--4{grid-template-columns:repeat(4,1fr)}

/* BENEFIT CARDS */
.card{padding:32px 28px;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--glass-shadow);transition:transform var(--transition)}
.card:hover{transform:translateY(-5px);box-shadow:0 16px 48px rgba(42,171,238,0.1)}
[data-theme="dark"] .card:hover{box-shadow:0 16px 48px rgba(0,0,0,0.4)}
.card--compact{padding:24px 20px;text-align:center}
.card__ico{width:52px;height:52px;display:flex;align-items:center;justify-content:center;border-radius:16px;margin-bottom:18px}
.card--compact .card__ico{margin:0 auto 14px}
.card__ico svg{width:26px;height:26px}
.card__ico--speed{background:linear-gradient(135deg,rgba(42,171,238,0.15),rgba(42,171,238,0.05));color:var(--primary)}
.card__ico--lock{background:linear-gradient(135deg,rgba(139,92,246,0.15),rgba(139,92,246,0.05));color:var(--accent)}
.card__ico--cloud{background:linear-gradient(135deg,rgba(42,171,238,0.15),rgba(42,171,238,0.05));color:var(--primary)}
.card__ico--file{background:linear-gradient(135deg,rgba(16,185,129,0.15),rgba(16,185,129,0.05));color:#10b981}
.card__ico--users{background:linear-gradient(135deg,rgba(245,158,11,0.15),rgba(245,158,11,0.05));color:#f59e0b}
.card__ico--bot{background:linear-gradient(135deg,rgba(139,92,246,0.15),rgba(139,92,246,0.05));color:var(--accent)}
.card__ico--chat{background:linear-gradient(135deg,rgba(239,68,68,0.12),rgba(239,68,68,0.04));color:#ef4444}
.card__ico--biz{background:linear-gradient(135deg,rgba(42,171,238,0.15),rgba(42,171,238,0.05));color:var(--primary)}
.card__ico--community{background:linear-gradient(135deg,rgba(16,185,129,0.15),rgba(16,185,129,0.05));color:#10b981}
.card__ico--dev{background:linear-gradient(135deg,rgba(245,158,11,0.15),rgba(245,158,11,0.05));color:#f59e0b}
.card h3{font-size:1.02rem;font-weight:700;margin-bottom:8px}
.card p{font-size:.87rem;color:var(--text-secondary);line-height:1.6}

/* FEATURES GRID */
.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feat{display:flex;gap:18px;align-items:flex-start;padding:28px;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius);transition:transform var(--transition)}
.feat:hover{transform:translateY(-3px)}
.feat__icon{width:44px;height:44px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:12px;background:linear-gradient(135deg,rgba(42,171,238,0.12),rgba(42,171,238,0.04));color:var(--primary)}
.feat__icon svg{width:22px;height:22px}
.feat h3{font-size:.95rem;font-weight:700;margin-bottom:4px}
.feat p{font-size:.84rem;color:var(--text-secondary);line-height:1.5}

/* SECURITY GRID */
.security-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:800px;margin:0 auto}
.sec-item{display:flex;gap:16px;align-items:flex-start;padding:24px;background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border);border-radius:var(--radius-sm);transition:transform var(--transition)}
.sec-item:hover{transform:translateY(-3px)}
.sec-item svg{width:24px;height:24px;flex-shrink:0;color:var(--primary);margin-top:2px}
.sec-item strong{font-size:.92rem;display:block;margin-bottom:4px}
.sec-item p{font-size:.82rem;color:var(--text-secondary);margin:0;line-height:1.5}

/* PLATFORMS */
.platforms{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.platform-card{display:flex;flex-direction:column;align-items:center;padding:36px 16px;background:var(--glass-bg);backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--glass-shadow);transition:all var(--transition);text-align:center;min-height:160px}
.platform-card:hover{transform:translateY(-5px);border-color:var(--primary);box-shadow:0 12px 36px rgba(42,171,238,0.12)}
[data-theme="dark"] .platform-card:hover{box-shadow:0 12px 36px rgba(42,171,238,0.08)}
.platform-card__icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--primary)}
.platform-card__icon svg{width:34px;height:34px}
.platform-card h3{font-size:.95rem;font-weight:700;margin-bottom:6px}
.platform-card__sub{font-size:.75rem;color:var(--text-tertiary);font-weight:500}
.section--download-bg{padding:120px 0}

/* FAQ */
.faq-wrap{max-width:760px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--glass-border);overflow:hidden}
.faq-q{width:100%;text-align:left;padding:20px 0;font-size:.95rem;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--text);transition:color var(--transition)}
.faq-q::after{content:'';width:10px;height:10px;border-right:2px solid var(--text-tertiary);border-bottom:2px solid var(--text-tertiary);transform:rotate(45deg);transition:transform var(--transition);flex-shrink:0}
.faq-q[aria-expanded="true"]::after{transform:rotate(-135deg)}
.faq-q:hover{color:var(--primary)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a p{padding-bottom:20px;font-size:.9rem;color:var(--text-secondary);line-height:1.7}

/* FINAL CTA */
.final-cta{text-align:center;position:relative;overflow:hidden;padding:120px 0}
.final-cta--bg{background:linear-gradient(180deg,rgba(242,248,252,0.58),rgba(242,248,252,0.84)),url('../end.png') center center/cover no-repeat}
[data-theme="dark"] .final-cta--bg{background:linear-gradient(180deg,rgba(5,13,22,0.58),rgba(5,13,22,0.86)),url('../end.png') center center/cover no-repeat}
.final-cta__inner{position:relative;z-index:2}
.final-cta h2{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;margin-bottom:16px;letter-spacing:-.02em}
.final-cta p{font-size:1.05rem;color:var(--text-secondary);max-width:540px;margin:0 auto 32px}

/* FOOTER */
.footer{padding:56px 0 28px;border-top:1px solid var(--glass-border)}
.footer__top{display:flex;justify-content:space-between;gap:40px;padding-bottom:36px;border-bottom:1px solid var(--glass-border)}
.footer__brand{max-width:300px}
.footer__brand p{margin-top:12px;font-size:.85rem;color:var(--text-secondary);line-height:1.6}
.footer__nav{display:flex;gap:56px}
.footer__col h4{font-size:.82rem;font-weight:700;margin-bottom:14px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-tertiary)}
.footer__col li{margin-bottom:7px}
.footer__col a{font-size:.85rem;color:var(--text-secondary);transition:color var(--transition)}
.footer__col a:hover{color:var(--primary)}
.footer__bottom{padding-top:20px;font-size:.76rem;color:var(--text-tertiary);line-height:1.6}
.footer__disc{margin-top:6px;opacity:.7}
.logo--sm .logo__icon{width:18px;height:18px}

/* SCROLL TO TOP BUTTON */
.scroll-top{position:fixed;right:24px;bottom:24px;width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,0.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,0.14);color:#fff;box-shadow:0 10px 30px rgba(0,0,0,0.3);opacity:0;visibility:hidden;transform:translateY(12px);transition:opacity var(--transition),transform var(--transition),visibility var(--transition);z-index:120}
.scroll-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-top:hover{transform:translateY(-3px);border-color:rgba(42,171,238,0.5);color:var(--primary)}

/* ANIMATIONS */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
[data-reveal].visible{opacity:1;transform:translateY(0)}

/* RESPONSIVE */
@media(max-width:1024px){
.platforms{grid-template-columns:repeat(3,1fr)}
.cards--4{grid-template-columns:repeat(2,1fr)}
.features-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
.nav{position:fixed;top:var(--header-h);left:0;right:0;bottom:0;background:var(--bg);display:flex;align-items:flex-start;justify-content:center;padding-top:40px;transform:translateX(100%);transition:transform var(--transition);z-index:99}
.nav.open{transform:translateX(0)}
.nav__list{flex-direction:column;gap:20px;text-align:center}
.nav__link{font-size:1.15rem}
.burger{display:flex}
.burger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}
.cards--3,.cards--4{grid-template-columns:1fr}
.platforms{grid-template-columns:repeat(2,1fr)}
.security-grid{grid-template-columns:1fr}
.hero{padding:calc(var(--header-h) + 48px) 0 48px}
.hero__title{font-size:2.2rem}
.hero__counters{gap:24px}
.hero__counter strong{font-size:1.15rem}
.section{padding:64px 0}
.final-cta{padding:80px 0}
.footer__top{flex-direction:column}
.footer__nav{gap:36px}
.scroll-top{right:18px;bottom:18px;width:48px;height:48px}
}
@media(max-width:480px){
.platforms{grid-template-columns:1fr}
.hero__counters{flex-direction:column;gap:14px}
.container{padding:0 16px}
}