:root{--bg:#031521;--bg2:#071e2d;--card:#0a2637;--line:#173f53;--text:#f2fbff;--muted:#94b5c6;--cyan:#22aef3;--cyan2:#67dcff;--orange:#ff9b45;--white:#fff;--shadow:0 20px 60px rgba(0,0,0,.28);--r:18px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:radial-gradient(circle at 65% -10%,#0b5370 0,transparent 30%),linear-gradient(180deg,#02131e,#041a28 50%,#03131d);color:var(--text);line-height:1.55}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}.header{position:fixed;inset:0 0 auto;z-index:50;background:linear-gradient(180deg,rgba(2,13,21,.9),rgba(2,13,21,.45),transparent);backdrop-filter:blur(8px)}.nav{height:82px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:.08em}.brand img{width:43px}.brand small{display:block;color:var(--muted);font-size:10px;letter-spacing:.03em;font-weight:500}.menu{display:flex;gap:22px;margin-left:auto;font-size:14px;color:#cce2ec}.menu 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0;color:var(--muted);font-size:13px}.equipment-grid{grid-template-columns:repeat(2,1fr)}.equipment{padding:20px;min-height:130px}.equipment .big-ico{font-size:30px}.courses{grid-template-columns:repeat(3,1fr)}.course{padding:28px;position:relative}.course.featured{outline:1px solid var(--cyan);transform:translateY(-8px)}.course h3{font-size:23px;margin:20px 0 8px}.course p{color:var(--muted)}.course .meta{display:flex;gap:16px;font-size:13px;color:#cde6f0;margin:22px 0}.course .price{font-size:28px;font-weight:800}.course .actions{display:flex;gap:10px;margin-top:20px}.about{grid-template-columns:1fr 1fr;align-items:center}.about-visual{min-height:420px;border-radius:28px;border:1px solid var(--line);background:radial-gradient(circle at 50% 30%,rgba(34,174,243,.27),transparent 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@media(max-width:640px){.hero h1{max-width:100%;word-break:break-word}}
@media(max-width:640px){.container{width:min(100% - 24px,1180px)}.header .brand small{display:none}.nav-actions .btn-primary{display:none}.hero{min-height:720px}.hero:before{background:linear-gradient(180deg,rgba(2,20,31,.38),#02141f 70%),url('/assets/hero-diver.jpg') center top/cover no-repeat}.hero-content{padding-top:120px}.hero h1{font-size:44px}.hero p{font-size:17px}.hero-buttons{flex-direction:column}.trust{grid-template-columns:1fr 1fr;margin-top:35px}.services,.stats,.equipment-grid,.footer-grid,.form-grid,.admin-form,.data-grid{grid-template-columns:1fr}.field.full,.admin-form .full{grid-column:auto}.steps{grid-template-columns:repeat(2,1fr)}section{padding:60px 0}.section-head{align-items:flex-start;flex-direction:column}.contact-copy,.form{padding:25px}.contact-copy h2{font-size:34px}.page-hero h1{font-size:38px}.portal{padding-top:92px}}
.service-card{padding:0 26px 26px;min-height:315px;position:relative}.service-image{display:block;width:calc(100% + 52px);height:132px;object-fit:cover;margin:0 -26px 20px;filter:saturate(.9) contrast(1.06);border-bottom:1px solid rgba(103,220,255,.22)}
/* Small screens: prevent long Russian headings and flex content from widening the page. */
.hero h1,.section-head h2,.page-hero h1,.contact-copy h2{overflow-wrap:anywhere}.trust div{min-width:0}.trust .ico{flex:0 0 38px}
@media(max-width:480px){.nav{gap:10px}.brand{gap:9px;letter-spacing:.05em}.brand img{width:38px}.mobile-toggle{padding:10px 12px}.hero{min-height:700px}.hero-content{padding-top:105px}.hero h1{font-size:34px;line-height:1.02;letter-spacing:-.045em}.hero p{font-size:16px}.eyebrow{font-size:11px;letter-spacing:.12em}.trust{grid-template-columns:1fr;margin-top:30px;gap:9px}.trust div{font-size:12px}.service-card{min-height:0}.service-image{height:150px}.section-head h2{font-size:30px}.page-hero h1,.contact-copy h2{font-size:32px}.project{grid-template-columns:64px 1fr;padding:16px;gap:12px}.project .thumb{height:64px}.course{padding:22px}.hero-buttons .btn{width:100%}}
@media(max-width:359px){.container{width:calc(100% - 20px)}.hero h1{font-size:31px}.brand{font-size:14px}.brand img{width:34px}.mobile-toggle{padding:9px 10px}}