:root{--navy:#0B1F5C;--navy-deep:#071B4D;--sky:#22AEEF;--sky-soft:#38BDF8;--light:#EAF7FF;--text:#1F2937;--border:#E5E7EB}
*{box-sizing:border-box}
body{font-family:Segoe UI,Arial,sans-serif;color:var(--text);background:linear-gradient(180deg,#fff,#f8fcff);line-height:1.55}
.container{max-width:1180px}
.section-space{padding:70px 0}
.section-alt{background:linear-gradient(180deg,#fafdff,#eef8ff)}
.section-head{margin-bottom:24px}
.section-head h2{font-size:clamp(1.7rem,3vw,2.25rem);font-weight:800;color:var(--navy-deep);margin-bottom:8px}
.section-head p{color:#4b5563;max-width:760px;margin-bottom:0}
.top-bar{background:var(--navy-deep);color:#fff}
.top-bar .container{min-height:40px;align-items:center}
.top-bar a{color:#8ed8ff;text-decoration:none}
.header-pro{border-bottom:1px solid #e8eef7;z-index:1200}
.navbar{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:nowrap}
.navbar-brand{display:flex;flex-direction:column;color:var(--navy-deep);font-weight:800;line-height:1.15;flex-shrink:0;max-width:220px}
.navbar-brand span{font-size:.74rem;color:#4b5563;font-weight:600;white-space:nowrap}
.navbar-collapse{display:flex;align-items:center;justify-content:flex-end;gap:24px;flex:1 1 auto}
.navbar-nav{display:flex;align-items:center;gap:24px;flex-wrap:nowrap;margin-left:auto}
.nav-link{font-weight:600;font-size:.95rem;color:#1e3a6d!important;white-space:nowrap;padding:.5rem 0!important}
.nav-link:hover{color:var(--sky)!important}
.nav-cta-group{display:flex;align-items:center;gap:12px;flex-shrink:0;margin-left:28px}
.btn{border-radius:12px;font-weight:600;padding:.7rem 1.15rem}
.nav-cta-group .btn{white-space:nowrap;padding:.62rem .9rem;font-size:.92rem;border-radius:11px;line-height:1.2}
.btn-primary{background:linear-gradient(90deg,var(--navy),var(--sky));border:none}
.btn-primary:hover{background:linear-gradient(90deg,var(--navy-deep),var(--sky-soft))}
.mobile-menu-toggle{display:none;align-items:center;justify-content:center;flex-direction:column;gap:5px;width:42px;height:42px;border:1px solid #c7ddf8;border-radius:12px;background:#fff;box-shadow:0 6px 16px rgba(11,31,92,.10);padding:0;z-index:1301}
.mobile-menu-toggle span{display:block;width:20px;height:2px;background:var(--navy);border-radius:99px;transition:all .2s ease}
.mobile-menu-toggle:hover{border-color:#8dc8f2;box-shadow:0 8px 18px rgba(11,31,92,.15)}
.mobile-menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-menu-toggle.is-open span:nth-child(2){opacity:0}
.mobile-menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.hero-premium{position:relative;overflow:hidden;background:linear-gradient(130deg,var(--navy-deep) 0%,var(--navy) 45%,var(--sky) 100%);color:#fff;min-height:620px}
.hero-premium:before,.hero-premium:after{content:"";position:absolute;border-radius:50%;pointer-events:none}
.hero-premium:before{width:420px;height:420px;background:radial-gradient(circle,rgba(56,189,248,.34),rgba(56,189,248,0));right:-70px;top:10px}
.hero-premium:after{width:600px;height:260px;background:radial-gradient(ellipse at center,rgba(234,247,255,.22),rgba(234,247,255,0));left:-140px;bottom:-110px}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:2rem;min-height:620px;padding-top:30px;padding-bottom:40px}
.hero-badge{display:inline-block;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.34);backdrop-filter:blur(8px);padding:.45rem .85rem;border-radius:999px;font-size:.84rem;font-weight:700}
.hero-copy h1{font-size:clamp(2rem,4.8vw,3.5rem);font-weight:800;line-height:1.12;margin:16px 0;max-width:14ch}
.hero-copy p{font-size:1.05rem;color:#e8f7ff;max-width:62ch}
.trust-chips{display:flex;gap:.65rem;flex-wrap:wrap}
.trust-chips span{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);padding:.43rem .78rem;border-radius:999px;font-size:.83rem}
.trust-chips.dark span{background:#fff;border-color:#d9e8ff;color:#12417c}
.hero-visual-wrap{position:relative;display:grid;place-items:center}
.hero-glow{position:absolute;width:460px;height:460px;background:radial-gradient(circle,rgba(56,189,248,.58),rgba(56,189,248,0));filter:blur(14px)}
.hero-visual-card{position:relative;width:min(450px,100%);height:450px;border-radius:30px;background:linear-gradient(155deg,rgba(255,255,255,.34),rgba(255,255,255,.08));border:1px solid rgba(255,255,255,.35);box-shadow:0 30px 60px rgba(2,12,46,.45);display:grid;place-items:center;backdrop-filter:blur(8px)}
.purifier-mockup{position:relative;width:260px;height:340px;border-radius:24px;background:linear-gradient(180deg,#fff,#effaff);box-shadow:0 16px 35px rgba(7,27,77,.25)}
.purifier-top{height:24px;border-radius:24px 24px 10px 10px;background:linear-gradient(90deg,#e8f7ff,#caeaff)}
.purifier-screen{position:absolute;top:48px;left:28px;width:88px;height:54px;border-radius:10px;background:linear-gradient(180deg,#1f6ba8,#67d1ff)}
.purifier-tank{position:absolute;bottom:22px;left:26px;right:26px;height:130px;border-radius:16px;background:linear-gradient(180deg,#c7ecff,#87d7ff);box-shadow:inset 0 -18px 24px rgba(255,255,255,.5)}
.water-drop{position:absolute;right:36px;top:84px;width:42px;height:58px;background:linear-gradient(180deg,#5fd4ff,#1b9ee8);clip-path:polygon(50% 0,80% 30%,92% 58%,50% 100%,8% 58%,20% 30%);filter:drop-shadow(0 10px 18px rgba(34,174,239,.35))}
.trust-stats-wrap{margin-top:-44px;position:relative;z-index:5}
.trust-stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.trust-stat-card{background:#fff;padding:1.05rem 1rem;border-radius:18px;border:1px solid var(--border);box-shadow:0 12px 28px rgba(11,31,92,.10)}
.trust-stat-card h3{font-size:1rem;color:var(--navy-deep);font-weight:700;margin-bottom:.35rem}
.trust-stat-card p{font-size:.9rem;color:#556074;margin-bottom:0}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1rem}
.feature-grid-4{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.feature-card,.trust-card,.service-card,.product-card,.legacy-box article{background:#fff;border:1px solid var(--border);border-radius:18px;padding:1rem;box-shadow:0 10px 24px rgba(11,31,92,.07);transition:all .25s ease}
.feature-card:hover,.trust-card:hover,.service-card:hover,.product-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(11,31,92,.13)}
.icon-dot{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(130deg,var(--navy),var(--sky));color:#fff;font-weight:800;margin-bottom:.65rem;font-size:.9rem}
.feature-card h3,.trust-card h3,.service-card h3,.product-card h3,.legacy-box h3{font-size:1.06rem;color:var(--navy-deep);font-weight:700}
.feature-card p,.trust-card p,.service-card p{color:#586579;margin-bottom:.7rem}
.feature-card a{color:#0676b8;font-weight:700;text-decoration:none}
.product-card.premium{display:flex;flex-direction:column;min-height:100%}
.premium-image{height:145px;border-radius:14px;background:linear-gradient(140deg,#e8f8ff,#c3eaff);position:relative;overflow:hidden}
.premium-image:after{content:"";position:absolute;inset:20% 32%;border-radius:18px;background:#fff;box-shadow:0 8px 16px rgba(10,50,100,.15)}
.tag-row{display:flex;gap:.5rem;flex-wrap:wrap}
.tag-row span{background:#eaf7ff;border:1px solid #cde7ff;color:#13406f;border-radius:999px;padding:.25rem .6rem;font-size:.78rem;font-weight:700}
.cta-band{background:linear-gradient(100deg,var(--navy-deep),var(--sky));color:#fff}
.cta-band h2{font-size:1.65rem;margin-bottom:.35rem}
.legacy-box{background:#fff;border:1px solid var(--border);border-radius:22px;padding:32px;box-shadow:0 14px 34px rgba(11,31,92,.09)}
.three-col{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.partner-box{background:linear-gradient(180deg,#fff,#f3fbff);border:1px solid var(--border);border-radius:20px;padding:28px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}
.faq-grid details{background:#fff;border:1px solid var(--border);border-radius:14px;padding:.8rem 1rem;box-shadow:0 8px 20px rgba(11,31,92,.06)}
.faq-grid summary{cursor:pointer;font-weight:700;color:var(--navy-deep)}
.faq-grid p{margin:.55rem 0 0;color:#586579}
.footer-section{background:var(--navy-deep);color:#e7f2ff}
.footer-section h5,.footer-section h6{color:#fff;font-weight:700}
.footer-list{list-style:none;padding:0;margin:0}
.footer-list li{margin:.42rem 0}
.footer-section a{color:#bde8ff;text-decoration:none}
.footer-section a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);color:#cce7ff;font-size:.92rem}
.mobile-cta{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr);z-index:1050}
.mobile-cta a{text-align:center;padding:.7rem .2rem;color:var(--navy);font-size:.8rem;font-weight:600;text-decoration:none}
.map-placeholder{height:220px;border:1px dashed var(--border);display:grid;place-items:center;border-radius:14px;background:var(--light)}
@media(max-width:992px){.section-space{padding:55px 0}.hero-premium{min-height:560px}.hero-inner{grid-template-columns:1fr;min-height:560px;padding-top:26px}.hero-copy{order:1}.hero-visual-wrap{order:2}.hero-visual-card{height:360px;max-width:360px}.purifier-mockup{transform:scale(.9)}.trust-stats-wrap{margin-top:0;padding-top:18px}.trust-stats-grid{grid-template-columns:repeat(2,1fr)}.three-col{grid-template-columns:1fr 1fr}.faq-grid{grid-template-columns:1fr}}
@media(max-width:991.98px){.navbar{min-height:76px;gap:12px}.navbar-brand{max-width:240px}.mobile-menu-toggle{display:inline-flex}.navbar{position:relative}.navbar-collapse{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border:1px solid #dbe9fb;border-top:none;border-radius:0 0 16px 16px;box-shadow:0 16px 28px rgba(10,33,80,.14);padding:14px;z-index:1300}.navbar-collapse.is-open{display:block}.navbar-nav{gap:0!important;flex-direction:column;align-items:stretch}.navbar-nav .nav-item{border-bottom:1px solid #eef4ff}.navbar-nav .nav-item:last-child{border-bottom:none}.navbar-nav .nav-link{display:block;padding:.72rem .2rem!important}.nav-cta-group{display:grid!important;grid-template-columns:1fr;gap:.6rem;margin-top:.8rem!important;margin-left:0!important}.hero-premium{z-index:1}}
@media(min-width:992px){.navbar-collapse{display:flex!important;position:static;border:0;box-shadow:none;padding:0;background:transparent}.mobile-menu-toggle{display:none!important}}
@media(min-width:1024px){.navbar-nav.gap-lg-2{gap:24px!important}.nav-cta-group .btn{white-space:nowrap}}
@media(max-width:768px){body{padding-bottom:56px}.section-space{padding:45px 0}.hero-premium{min-height:unset}.hero-inner{min-height:unset;gap:1.2rem;padding-bottom:30px}.hero-copy h1{max-width:none}.hero-copy p{max-width:none}.trust-stats-grid{grid-template-columns:1fr}.feature-grid,.feature-grid-4,.three-col{grid-template-columns:1fr}}