:root{--blue:#0b6bcb;--dark:#0e1b2c;--gray:#f2f5f9;--text:#243242}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Arial,sans-serif;color:var(--text);line-height:1.6}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5eaf0;z-index:10}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-size:24px;font-weight:800;letter-spacing:1px;color:var(--dark);text-decoration:none}
.logo span{color:var(--blue)}
.menu{display:flex;gap:18px;align-items:center}
.lang{border:1px solid #ccd6e2;border-radius:6px;padding:4px 10px;font-size:13px}
.menu a{color:var(--dark);text-decoration:none;font-weight:600}
.btn{display:inline-block;background:var(--blue);color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;border:none;cursor:pointer;font-weight:700}
.btn-ghost{background:#fff;color:var(--blue);border:2px solid var(--blue)}
.btn-small{padding:8px 16px;font-size:14px}
.hamburger{display:none;background:none;border:none;font-size:24px}
.hero{background:linear-gradient(135deg,#0e1b2c,#0b6bcb);color:#fff;padding:64px 0}
.hero h1{font-size:46px;line-height:1.15;margin:12px 0}
.badge{background:rgba(255,255,255,.15);display:inline-block;padding:6px 12px;border-radius:20px;font-size:13px}
.lead{opacity:.92;font-size:18px;max-width:520px}
.hero-actions{display:flex;gap:12px;margin:20px 0}
.hero-actions .btn-ghost{background:transparent;color:#fff;border-color:#fff}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.hero-card{background:#fff;color:var(--text);border-radius:14px;padding:28px}
.water-drop{font-size:44px}
.hero-card ul{list-style:none;margin-top:12px}
.stats{display:flex;gap:28px;margin-top:18px}
.stats strong{display:block;font-size:22px}
.stats span{font-size:13px;opacity:.8}
.section{padding:56px 0}
.gray{background:var(--gray)}
h2{font-size:32px;margin-bottom:6px;color:var(--dark)}
.subtitle{color:#5b6b7e;margin-bottom:24px}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.cards4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.product img{width:100%;height:200px;object-fit:cover;border-radius:8px;margin-bottom:12px;background:#dbe5f0}
.logo-img{height:32px;vertical-align:middle;border-radius:4px}
.hero-img{width:100%;border-radius:10px;margin-bottom:12px}
.tech{width:100%;max-width:640px;border-collapse:collapse;background:#fff}
.tech th,.tech td{border:1px solid #dde5ee;padding:10px 14px;text-align:left}
.tech th{background:#eef4fb;width:45%}
.video-banner{background:#0e1b2c;padding:20px 0 8px}
.video-banner video{display:block;width:100%;max-width:860px;margin:0 auto;aspect-ratio:16/9;border-radius:14px;background:#000}
.btn-wa{background:#25D366;display:inline-flex;align-items:center;gap:8px}
.wa-icon{width:20px;height:20px}
.wa-float{position:fixed;right:18px;bottom:18px;width:56px;height:56px;background:#25D366;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 14px rgba(0,0,0,.3);z-index:50}
.wa-float svg{width:32px;height:32px}
.link{color:var(--blue);font-weight:700}
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.gallery img{width:100%;border-radius:12px;border:1px solid #dde5ee;background:#fff}
.hint{margin-top:12px;font-size:14px;color:#5b6b7e}
code{background:#e8f1fb;padding:2px 6px;border-radius:6px}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:24px}
.gray .card{border-color:#dde5ee}
.step{width:36px;height:36px;background:var(--blue);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:10px}
.product .capacity{font-size:22px;font-weight:800;color:var(--blue);margin:6px 0 12px}
.product ul{margin:0 0 16px 18px}
.featured{border:2px solid var(--blue);position:relative}
.popular{position:absolute;top:-14px;right:16px;background:var(--blue);color:#fff;font-size:12px;padding:4px 10px;border-radius:12px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chips span{background:#e8f1fb;color:var(--dark);padding:8px 14px;border-radius:20px;font-weight:600}
.note{background:#eef6ff;border-left:4px solid var(--blue);padding:18px;margin-top:22px;border-radius:0 10px 10px 0}
.narrow{max-width:720px}
details{background:#fff;border:1px solid #dde5ee;border-radius:10px;padding:14px 16px;margin-bottom:10px}
summary{font-weight:700;cursor:pointer}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.form{display:flex;flex-direction:column;gap:12px;background:var(--gray);padding:22px;border-radius:12px}
.form input,.form select,.form textarea{padding:12px;border:1px solid #ccd6e2;border-radius:8px;font-size:15px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-note{font-size:14px;color:green}
.footer{background:var(--dark);color:#cbd5e1;padding:26px 0;font-size:14px}
.foot{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:800px){
.hero-grid,.cards3,.cards4,.products,.contact-grid,.gallery{grid-template-columns:1fr}
.hero h1{font-size:34px}
.menu{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px;border-bottom:1px solid #eee}
.menu.open{display:flex}
.hamburger{display:block}
}