*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
--primary:#2B5797;--primary-light:#4A7BC8;--primary-dark:#1A3A6E;
--accent:#D83B01;--accent-light:#F25C2B;
--bg:#f0f4fb;--bg-alt:#e4eaf5;--surface:#ffffff;
--text:#111827;--text-secondary:#4b5563;--text-tertiary:#9ca3af;
--glass-bg:rgba(255,255,255,0.55);--glass-border:rgba(255,255,255,0.75);
--glass-shadow:0 8px 32px rgba(43,87,151,0.08);
--glass-blur:20px;
--radius:20px;--radius-sm:12px;--radius-xs:8px;
--transition:0.3s cubic-bezier(.4,0,.2,1);
--header-h:72px;
}
[data-theme="dark"]{
--bg:#060b18;--bg-alt:#0d1427;--surface:#111827;
--text:#e5e7eb;--text-secondary:#9ca3af;--text-tertiary:#6b7280;
--glass-bg:rgba(255,255,255,0.04);--glass-border:rgba(255,255,255,0.08);
--glass-shadow:0 8px 32px rgba(0,0,0,0.3);
--primary-light:#6b9bdb;
}
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:1200px;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}

/* ===== GLASS CARD ===== */
.glass-card{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),box-shadow var(--transition)}
.glass-card:hover{transform:translateY(-4px);box-shadow:0 16px 48px rgba(43,87,151,0.12)}
[data-theme="dark"] .glass-card:hover{box-shadow:0 16px 48px rgba(0,0,0,0.4)}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:var(--radius-sm);font-weight:600;font-size:0.95rem;transition:all var(--transition);gap:8px;white-space:nowrap}
.btn--primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;box-shadow:0 4px 16px rgba(43,87,151,0.3)}
.btn--primary:hover{box-shadow:0 8px 28px rgba(43,87,151,0.4);transform:translateY(-2px)}
.btn--glass{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);color:var(--text)}
.btn--glass:hover{background:var(--glass-border);transform:translateY(-2px)}
.btn--full{width:100%;text-align:center}
.btn--lg{padding:18px 40px;font-size:1.05rem;border-radius:var(--radius)}

/* ===== HEADER ===== */
.header{position:fixed;top:0;left:0;right:0;z-index:100;background:transparent;transition:background var(--transition),box-shadow var(--transition);height:var(--header-h)}
.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 1px 12px rgba(43,87,151,0.06)}
.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:1rem;font-weight:400;letter-spacing:-0.01em}
.logo__text strong{font-weight:700}
.nav__list{display:flex;gap:32px}
.nav__link{font-size:0.9rem;font-weight:500;color:var(--text-secondary);transition:color var(--transition)}
.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);transition:all var(--transition);color:var(--text-secondary)}
.theme-toggle:hover{color:var(--primary);background:var(--glass-border)}
.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,#05070a 0%,#0a1117 52%,#0d1820 100%);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,#05070a 0%,#0a1117 52%,#0d1820 100%)}
.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) minmax(520px,50vw);align-items:center;gap:0;max-width:100%;padding-right:0}
.hero__content{max-width:720px;padding-right:40px}
.hero__badge{display:inline-block;padding:6px 16px;border-radius:100px;font-size:0.8rem;font-weight:600;background:var(--glass-bg);backdrop-filter:blur(12px);border:1px solid var(--glass-border);color:var(--primary);margin-bottom:24px;letter-spacing:0.02em}
.hero__title{font-size:clamp(2.2rem,5vw,3.6rem);font-weight:800;line-height:1.1;letter-spacing:-0.03em;margin-bottom:20px}
.gradient-text{background:linear-gradient(135deg,var(--primary),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero__subtitle{font-size:1.15rem;color:var(--text-secondary);line-height:1.7;margin-bottom:32px;max-width:600px}
.hero__cta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero__stats{display:flex;gap:40px}
.hero__stat{display:flex;flex-direction:column}
.hero__stat strong{font-size:1.5rem;font-weight:800;color:var(--primary)}
.hero__stat span{font-size:0.8rem;color:var(--text-tertiary);font-weight:500}
.hero__visual{position:relative;height:min(72vh,760px);min-height:520px;display:flex;align-items:stretch;justify-content:flex-end;overflow:hidden}
.hero__image{width:100%;height:100%;object-fit:contain;object-position:center center;display:block;filter:drop-shadow(0 20px 60px rgba(0,0,0,0.35));transform:translateX(-24px)}
@media (max-width: 1100px){.hero__inner{grid-template-columns:1fr}.hero__content{max-width:100%;padding-right:0}.hero__visual{height:min(60vh,560px);min-height:360px;margin-top:32px}.hero__image{object-position:center center}}

/* ===== BUBBLES ===== */
.bubble{position:absolute;border-radius:50%;pointer-events:none;z-index:0}
.bubble--1{width:500px;height:500px;top:-120px;right:-100px;background:radial-gradient(circle at 35% 35%,rgba(43,87,151,0.18),rgba(43,87,151,0.03) 70%);filter:blur(60px)}
.bubble--2{width:300px;height:300px;top:60%;left:-80px;background:radial-gradient(circle at 40% 40%,rgba(216,59,1,0.12),transparent 70%);filter:blur(50px)}
.bubble--3{width:200px;height:200px;bottom:10%;right:15%;background:radial-gradient(circle at 30% 30%,rgba(74,123,200,0.15),transparent 70%);filter:blur(40px)}
.bubble--4{width:400px;height:400px;top:10%;right:-150px;background:radial-gradient(circle at 35% 35%,rgba(43,87,151,0.1),transparent 70%);filter:blur(60px)}
.bubble--5{width:350px;height:350px;bottom:-100px;left:-100px;background:radial-gradient(circle at 40% 40%,rgba(216,59,1,0.08),transparent 70%);filter:blur(55px)}
.bubble--6{width:500px;height:500px;top:50%;left:50%;transform:translate(-50%,-50%);background:radial-gradient(circle at 40% 40%,rgba(43,87,151,0.12),transparent 60%);filter:blur(70px)}
[data-theme="dark"] .bubble--1{background:radial-gradient(circle at 35% 35%,rgba(74,123,200,0.15),transparent 70%)}
[data-theme="dark"] .bubble--2{background:radial-gradient(circle at 40% 40%,rgba(216,59,1,0.1),transparent 70%)}
[data-theme="dark"] .bubble--3{background:radial-gradient(circle at 30% 30%,rgba(74,123,200,0.1),transparent 70%)}

/* ===== SECTIONS ===== */
.section{padding:100px 0;position:relative}
.section__header{text-align:center;margin-bottom:56px}
.section__title{font-size:clamp(1.7rem,3.5vw,2.5rem);font-weight:800;letter-spacing:-0.02em;margin-bottom:12px}
.section__desc{font-size:1.05rem;color:var(--text-secondary);max-width:560px;margin:0 auto}

/* ===== GRID ===== */
.grid{display:grid;gap:24px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.grid--5{grid-template-columns:repeat(5,1fr)}

/* ===== BENEFIT CARDS ===== */
.benefit-card{padding:32px;text-align:center}
.benefit-card__icon{width:56px;height:56px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;border-radius:16px;background:linear-gradient(135deg,rgba(43,87,151,0.1),rgba(43,87,151,0.04));color:var(--primary)}
[data-theme="dark"] .benefit-card__icon{background:linear-gradient(135deg,rgba(74,123,200,0.15),rgba(74,123,200,0.05))}
.benefit-card__icon svg{width:28px;height:28px}
.benefit-card h3{font-size:1.05rem;font-weight:700;margin-bottom:8px}
.benefit-card p{font-size:0.9rem;color:var(--text-secondary);line-height:1.6}

/* ===== FEATURE CARDS ===== */
.feature-card{padding:32px;text-align:center}
.feature-card__icon{width:60px;height:60px;margin:0 auto 20px;display:flex;align-items:center;justify-content:center;border-radius:18px;color:#fff}
.feature-card__icon svg{width:30px;height:30px}
.feature-card__icon--word{background:linear-gradient(135deg,#2B5797,#1A3A6E)}
.feature-card__icon--excel{background:linear-gradient(135deg,#107C41,#0B5A2E)}
.feature-card__icon--ppt{background:linear-gradient(135deg,#D24726,#B33D1E)}
.feature-card__icon--outlook{background:linear-gradient(135deg,#0078D4,#005A9E)}
.feature-card__icon--onenote{background:linear-gradient(135deg,#7719AA,#5B0F85)}
.feature-card__icon--onedrive{background:linear-gradient(135deg,#0078D4,#106EBE)}
.feature-card h3{font-size:1.1rem;font-weight:700;margin-bottom:8px}
.feature-card p{font-size:0.88rem;color:var(--text-secondary);line-height:1.6}

/* ===== CASE CARDS ===== */
.case-card{padding:28px;text-align:center}
.case-card__icon{width:48px;height:48px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;color:var(--primary)}
.case-card__icon svg{width:28px;height:28px}
.case-card h3{font-size:1rem;font-weight:700;margin-bottom:8px}
.case-card p{font-size:0.85rem;color:var(--text-secondary)}

/* ===== PLATFORM CARDS ===== */
.platform-card{padding:28px 16px;text-align:center}
.platform-card__icon{width:48px;height:48px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;color:var(--primary)}
.platform-card__icon svg{width:32px;height:32px}
.platform-card h3{font-size:0.92rem;font-weight:600}

/* ===== DOWNLOAD CARDS ===== */
.download-card{padding:40px;position:relative;overflow:visible}
.download-card--primary{border:2px solid var(--primary);background:linear-gradient(135deg,rgba(43,87,151,0.06),rgba(43,87,151,0.01))}
[data-theme="dark"] .download-card--primary{background:linear-gradient(135deg,rgba(43,87,151,0.12),rgba(43,87,151,0.03))}
.download-card__badge{display:inline-flex;align-items:center;position:absolute;top:8px;left:16px;transform:none;background:var(--primary);color:#fff;font-size:0.78rem;font-weight:700;padding:8px 14px;border-radius:999px;letter-spacing:0.02em;box-shadow:0 8px 24px rgba(43,87,151,0.25);white-space:nowrap;z-index:2;max-width:calc(100% - 32px)}
.download-card h3{font-size:1.3rem;font-weight:700;margin-bottom:12px}
.download-card p{font-size:0.92rem;color:var(--text-secondary);margin-bottom:20px;line-height:1.6}
.download-card__list{margin-bottom:28px}
.download-card__list li{padding:6px 0;font-size:0.9rem;color:var(--text-secondary);position:relative;padding-left:20px}
.download-card__list li::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:6px;height:6px;border-radius:50%;background:var(--primary)}

/* ===== TRUST ===== */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.trust-item{display:flex;align-items:flex-start;gap:16px;padding:24px;border-radius:var(--radius-sm);background:var(--glass-bg);backdrop-filter:blur(12px);border:1px solid var(--glass-border)}
.trust-item svg{width:24px;height:24px;flex-shrink:0;color:var(--primary);margin-top:2px}
.trust-item strong{font-size:0.95rem;display:block;margin-bottom:4px}
.trust-item p{font-size:0.82rem;color:var(--text-secondary);margin:0}

/* ===== FAQ ===== */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid var(--glass-border);overflow:hidden}
.faq-item__q{width:100%;text-align:left;padding:20px 0;font-size:1rem;font-weight:600;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--text);transition:color var(--transition)}
.faq-item__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-item__q[aria-expanded="true"]::after{transform:rotate(-135deg)}
.faq-item__q:hover{color:var(--primary)}
.faq-item__a{max-height:0;overflow:hidden;transition:max-height 0.4s ease,padding 0.3s ease}
.faq-item__a p{padding-bottom:20px;font-size:0.92rem;color:var(--text-secondary);line-height:1.7}

/* ===== FINAL CTA ===== */
.final-cta{text-align:center;position:relative;overflow:hidden;padding:120px 0}
.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:-0.02em}
.final-cta p{font-size:1.05rem;color:var(--text-secondary);max-width:520px;margin:0 auto 32px}

/* ===== FOOTER ===== */
.footer{padding:60px 0 32px;border-top:1px solid var(--glass-border)}
.footer__top{display:flex;justify-content:space-between;gap:40px;padding-bottom:40px;border-bottom:1px solid var(--glass-border)}
.footer__brand{max-width:320px}
.footer__brand p{margin-top:12px;font-size:0.88rem;color:var(--text-secondary);line-height:1.6}
.footer__nav{display:flex;gap:60px}
.footer__col h4{font-size:0.85rem;font-weight:700;margin-bottom:16px;text-transform:uppercase;letter-spacing:0.06em;color:var(--text-tertiary)}
.footer__col li{margin-bottom:8px}
.footer__col a{font-size:0.88rem;color:var(--text-secondary);transition:color var(--transition)}
.footer__col a:hover{color:var(--primary)}
.footer__bottom{padding-top:24px;font-size:0.78rem;color:var(--text-tertiary);line-height:1.6}
.footer__disclaimer{margin-top:8px;opacity:0.7}
.logo--footer .logo__icon{width:20px;height:20px}

.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(17,24,39,0.78);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(0,0,0,0.28);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(43,87,151,0.45);color:var(--primary-light)}

/* ===== ANIMATIONS ===== */
[data-anim]{opacity:0;transform:translateY(24px);transition:opacity 0.6s ease,transform 0.6s ease}
[data-anim].visible{opacity:1;transform:translateY(0)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
.grid--5{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(2,1fr)}
.trust-grid{grid-template-columns:repeat(2,1fr)}
}
@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:24px;text-align:center}
.nav__link{font-size:1.2rem}
.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)}
.grid--2,.grid--3{grid-template-columns:1fr}
.grid--5{grid-template-columns:repeat(2,1fr)}
.hero{padding:calc(var(--header-h) + 48px) 0 48px}
.hero__title{font-size:2rem}
.hero__stats{gap:24px}
.hero__stat strong{font-size:1.2rem}
.section{padding:64px 0}
.final-cta{padding:80px 0}
.footer__top{flex-direction:column}
.footer__nav{gap:40px}
.trust-grid{grid-template-columns:1fr}
.scroll-top{right:18px;bottom:18px;width:48px;height:48px}
}
@media(max-width:480px){
.grid--4,.grid--5{grid-template-columns:1fr}
.hero__cta{flex-direction:column}
.hero__cta .btn{width:100%}
.hero__stats{flex-direction:column;gap:16px}
.container{padding:0 16px}
}