/* 
Art Direction 2026: Plum Contrast
Palette: Primary oklch(45% 0.15 330), BG oklch(98% 0.01 330), Accent oklch(65% 0.12 330), Dark oklch(25% 0.05 330)
Typography: Headings Georgia/Palatino (Serif), Body System-Sans
Composition: Split-screen hero/sections, editorial rhythm, soft corners (6-10px)
Animation: Smooth fade-in sections on scroll, rotating SVG badge
*/
:root {
    --bsnt-primary: oklch(45% 0.15 330);
    --bsnt-primary-light: oklch(65% 0.12 330);
    --bsnt-bg: oklch(98% 0.01 330);
    --bsnt-bg-alt: oklch(94% 0.02 330);
    --bsnt-dark: oklch(25% 0.05 330);
    --bsnt-text: oklch(30% 0.02 330);
    --bsnt-text-light: oklch(95% 0.01 330);
    --bsnt-radius: 8px;
    --bsnt-transition: 0.4s cubic-bezier(0.25, 1, 0.5, 1);
    --bsnt-container: 1240px;
}

html, body { overflow-x: clip; scroll-behavior: smooth; }
body { 
    margin: 0; 
    font-family: system-ui, -apple-system, sans-serif; 
    background-color: var(--bsnt-bg); 
    color: var(--bsnt-text); 
    line-height: 1.65; 
    -webkit-font-smoothing: antialiased; 
}

h1, h2, h3, h4 { 
    font-family: Georgia, 'Palatino Linotype', 'Palatino', serif; 
    line-height: 1.2; 
    margin-top: 0; 
    overflow-wrap: anywhere; 
}

h1 { font-size: clamp(2rem, 8vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 5vw, 2.5rem); }

a { color: inherit; text-decoration: none; transition: var(--bsnt-transition); }
a:focus-visible { outline: 3px solid var(--bsnt-primary-light); outline-offset: 2px; }

[hidden] { display: none !important; }

.bsnt-container { 
    max-width: var(--bsnt-container); 
    margin: 0 auto; 
    padding: 0 20px; 
}

.bsnt-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--bsnt-radius);
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--bsnt-transition);
    gap: 8px;
    text-wrap: balance;
}
.bsnt-btn-primary { background: var(--bsnt-primary); color: var(--bsnt-text-light); }
.bsnt-btn-primary:hover { background: var(--bsnt-primary-light); transform: translateY(-2px); }

/* Topbar & Header */
.bsnt-topbar { 
    background: var(--bsnt-bg-alt); 
    font-size: 0.85rem; 
    padding: 8px 0; 
    border-bottom: 1px solid oklch(90% 0.02 330); 
}
.bsnt-topbar-flex { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    flex-wrap: wrap; 
    gap: 10px; 
}

.bsnt-header { 
    position: sticky; 
    top: 0; 
    z-index: 100; 
    background: rgba(255,255,255,0.9); 
    backdrop-filter: blur(10px); 
    padding: 15px 0; 
}
.bsnt-header-flex { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}
.bsnt-logo { font-family: Georgia, serif; font-weight: bold; font-size: 1.5rem; display: flex; flex-direction: column; }
.bsnt-logo-domain { font-size: 0.7rem; font-family: system-ui; opacity: 0.6; text-transform: lowercase; }

.bsnt-nav { display: flex; gap: 24px; align-items: center; }
.bsnt-nav a { font-size: 0.95rem; font-weight: 500; }
.bsnt-nav a:hover { color: var(--bsnt-primary); }

.bsnt-lang-switch { display: flex; gap: 10px; align-items: center; font-size: 0.9rem; }

.bsnt-menu-toggle { 
    display: none; 
    background: none; 
    border: none; 
    cursor: pointer; 
    font-family: inherit; 
    font-weight: 600; 
}

@media (max-width: 959px) {
    .bsnt-menu-toggle { display: block; }
    .bsnt-nav { 
        position: fixed; 
        top: 0; 
        right: -100%; 
        width: 80%; 
        height: 100vh; 
        background: var(--bsnt-primary); 
        flex-direction: column; 
        justify-content: center; 
        transition: var(--bsnt-transition); 
        z-index: 110; 
    }
    .bsnt-nav a { color: var(--bsnt-text-light); font-size: 1.5rem; }
    .bsnt-nav.bsnt-open { right: 0; }
}

/* Layouts */
.bsnt-split { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    align-items: center; 
    gap: 40px; 
}
@media (max-width: 768px) { .bsnt-split { grid-template-columns: 1fr; } }

.bsnt-hero { 
    background: var(--bsnt-primary); 
    color: var(--bsnt-text-light); 
    padding: 80px 0; 
}
.bsnt-hero h1 { color: var(--bsnt-text-light); }

.bsnt-section { padding: 80px 0; }
.bsnt-section-dark { background: var(--bsnt-dark); color: var(--bsnt-text-light); }

/* Components */
.bsnt-facts { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
    gap: 20px; 
    margin: 40px 0; 
}
.bsnt-fact-card { 
    padding: 30px; 
    background: var(--bsnt-bg-alt); 
    border-radius: var(--bsnt-radius); 
    text-align: center; 
    border-bottom: 4px solid var(--bsnt-primary); 
}
.bsnt-fact-val { display: block; font-size: 2rem; font-weight: bold; color: var(--bsnt-primary); }

.bsnt-services-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 30px; 
}
.bsnt-service-item { 
    position: relative; 
    padding: 40px; 
    background: var(--bsnt-bg-alt); 
    border-radius: var(--bsnt-radius); 
    transition: var(--bsnt-transition); 
}
.bsnt-service-item:hover { background: oklch(90% 0.03 330); }
.bsnt-service-num { 
    position: absolute; 
    top: 20px; 
    right: 20px; 
    font-family: Georgia, serif; 
    font-size: 2rem; 
    opacity: 0.2; 
}

.bsnt-steps { display: grid; gap: 20px; }
.bsnt-step { 
    display: flex; 
    gap: 20px; 
    padding: 20px; 
    border-left: 3px solid var(--bsnt-primary); 
    background: var(--bsnt-bg-alt); 
}

.bsnt-table-wrap { overflow-x: auto; margin: 20px 0; }
.bsnt-table { 
    width: 100%; 
    border-collapse: collapse; 
    min-width: 500px; 
}
.bsnt-table th, .bsnt-table td { 
    padding: 12px; 
    text-align: left; 
    border-bottom: 1px solid oklch(90% 0.02 330); 
}
.bsnt-table th { background: var(--bsnt-bg-alt); }

.bsnt-faq-item { margin-bottom: 10px; }
.bsnt-faq-item summary { 
    padding: 15px; 
    background: var(--bsnt-bg-alt); 
    cursor: pointer; 
    font-weight: 600; 
    border-radius: var(--bsnt-radius); 
    list-style: none; 
}
.bsnt-faq-content { padding: 15px; border: 1px solid var(--bsnt-bg-alt); border-top: none; }

.bsnt-guide-card { 
    padding: 20px; 
    border: 1px solid oklch(90% 0.02 330); 
    border-radius: var(--bsnt-radius); 
    transition: var(--bsnt-transition); 
}
.bsnt-guide-card:hover { border-color: var(--bsnt-primary); }
.bsnt-guide-kicker { font-size: 0.8rem; text-transform: uppercase; color: var(--bsnt-primary); font-weight: bold; }
.bsnt-guide-time { font-size: 0.8rem; opacity: 0.6; }

.bsnt-legal-toc { margin-bottom: 30px; padding: 20px; background: var(--bsnt-bg-alt); border-radius: var(--bsnt-radius); }
.bsnt-legal-note { font-style: italic; font-size: 0.9rem; margin-bottom: 20px; color: var(--bsnt-primary); }

.bsnt-form { display: grid; gap: 15px; max-width: 600px; }
.bsnt-form-group { display: flex; flex-direction: column; gap: 5px; }
.bsnt-form input, .bsnt-form textarea { 
    padding: 10px; 
    border: 1px solid oklch(85% 0.02 330); 
    border-radius: var(--bsnt-radius); 
    font-family: inherit; 
}
.bsnt-honey { display: none; }

.bsnt-footer { 
    background: var(--bsnt-primary); 
    color: var(--bsnt-text-light); 
    padding: 60px 0 20px; 
}
.bsnt-footer-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
    gap: 40px; 
    margin-bottom: 40px; 
}
.bsnt-footer-col h4 { color: var(--bsnt-text-light); margin-bottom: 20px; }
.bsnt-footer-col a { display: block; margin-bottom: 8px; opacity: 0.8; font-size: 0.9rem; }
.bsnt-footer-col a:hover { opacity: 1; }
.bsnt-footer-bottom { 
    border-top: 1px solid oklch(60% 0.1 330); 
    padding-top: 20px; 
    font-size: 0.8rem; 
    opacity: 0.7; 
    text-align: center; 
}

.bsnt-cookie-banner { 
    position: fixed; 
    bottom: 20px; 
    left: 20px; 
    right: 20px; 
    background: var(--bsnt-bg); 
    box-shadow: 0 10px 30px rgba(0,0,0,0.15); 
    z-index: 1000; 
    padding: 20px; 
    border-radius: var(--bsnt-radius); 
    max-width: 600px; 
    margin: 0 auto; 
}
.bsnt-cookie-btns { display: flex; gap: 10px; margin-top: 15px; flex-wrap: wrap; }
.bsnt-cookie-panel { 
    background: var(--bsnt-bg-alt); 
    padding: 15px; 
    margin-top: 15px; 
    border-radius: var(--bsnt-radius); 
}
.bsnt-cookie-cat { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; cursor: pointer; }

.bsnt-badge { 
    position: absolute; 
    width: 100px; 
    height: 100px; 
    animation: bsnt-rotate 10s linear infinite; 
}
@keyframes bsnt-rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.bsnt-skip-link { 
    position: absolute; 
    top: -100px; 
    left: 0; 
    background: var(--bsnt-primary); 
    color: white; 
    padding: 10px; 
    z-index: 200; 
}
.bsnt-skip-link:focus { top: 0; }

.bsnt-prose { overflow-wrap: anywhere; }
.bsnt-prose p { margin-bottom: 1.5rem; }

@media (prefers-reduced-motion: reduce) {
    * { animation: none !important; transition: none !important; }
}

/* сборка: защита от переполнения и служебные правила (промпт, разделы 6-7) */
[hidden]{display:none!important}
html,body{overflow-x:clip}
img,video{max-width:100%;height:auto}
:where(main,header,footer) :where(div,section,article,aside,ul,ol,li,figure,details,form,fieldset,nav){min-width:0}
:where(main,footer) :where(h1,h2,h3,h4,p,li,td,th,dd,dt,summary,figcaption,a){overflow-wrap:anywhere;word-break:normal;hyphens:auto}
.bsnt-table-wrap{overflow-x:auto;max-width:100%}
.bsnt-honey{position:absolute!important;left:auto!important;right:auto!important;top:auto!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;border:0!important;overflow:hidden!important;clip:rect(0 0 0 0)!important;clip-path:inset(50%)!important;white-space:nowrap!important;opacity:0!important}
:where(a){color:inherit;text-underline-offset:.2em}
:where(main) :where(section,article,div,li,figure){position:relative}
@media (max-width:959px){html.js :where(#bsnt-menu):not(.bsnt-open){display:none!important}:where(header):has(#bsnt-menu){position:relative}:where(#bsnt-menu).bsnt-open{display:flex!important;flex-direction:column;align-items:stretch;gap:.25rem;position:absolute;left:0;right:0;top:100%;z-index:90;max-height:calc(100vh - 4rem);overflow-y:auto;padding:1rem clamp(16px,4vw,32px) 1.5rem;box-sizing:border-box;visibility:visible!important;opacity:1!important;transform:none!important;background:var(--bsnt-bg,Canvas);color:var(--bsnt-text,CanvasText);box-shadow:0 12px 24px rgb(0 0 0 / .25)}:where(#bsnt-menu).bsnt-open a{min-height:44px;display:flex;align-items:center}}
html:not(.js) #bsnt-menu{display:flex!important;flex-wrap:wrap;position:static!important;transform:none!important;visibility:visible!important;opacity:1!important}
.bsnt-breadcrumbs{font-size:.875rem;padding-block:1rem}.bsnt-breadcrumbs ol{display:flex;flex-wrap:wrap;gap:.25rem .5rem;list-style:none;margin:0;padding:0}.bsnt-breadcrumbs li+li::before{content:"/";margin-right:.5rem;opacity:.5}
.bsnt-figure{margin:2rem 0}.bsnt-figure img{display:block;width:100%;height:auto}
.bsnt-sitemap ul{columns:2 16rem;padding-left:1.1rem}