:root{--ws-blue: #0b6dff;--ws-blue-dark: #084fbe;--ws-blue-soft: #e6f0ff;--ws-ink: #0f172a;--ws-muted: #64748b;--ws-bg: #ffffff;--ws-bg-soft: #f5f7fb;--ws-border: #e2e8f0;--ws-accent: #00b67a;--ws-warn: #f59e0b;--ws-radius: 10px;--ws-radius-lg: 16px;--ws-shadow-sm: 0 1px 2px rgba(15, 23, 42, .06);--ws-shadow-md: 0 4px 16px rgba(15, 23, 42, .08);--ws-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--ws-mono: ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;--container: 1140px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--ws-font);font-size:16px;line-height:1.6;color:var(--ws-ink);background:var(--ws-bg);-webkit-font-smoothing:antialiased}img,svg{max-width:100%;height:auto;display:block}a{color:var(--ws-blue);text-decoration:none;transition:color .15s ease}a:hover{color:var(--ws-blue-dark)}h1,h2,h3,h4{margin:0 0 .6em;line-height:1.2;color:var(--ws-ink);font-weight:700;letter-spacing:-.01em}h1{font-size:clamp(2rem,5vw,3rem)}h2{font-size:clamp(1.5rem,3.2vw,2.1rem)}h3{font-size:1.25rem}p{margin:0 0 1em}.container{max-width:var(--container);margin:0 auto;padding:0 20px}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--ws-radius);font-weight:600;font-size:1rem;cursor:pointer;border:1px solid transparent;transition:all .15s ease;text-decoration:none;white-space:nowrap}.btn--primary{background:var(--ws-blue);color:#fff}.btn--primary:hover{background:var(--ws-blue-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--ws-shadow-md)}.btn--ghost{background:transparent;color:var(--ws-blue);border-color:var(--ws-border)}.btn--ghost:hover{border-color:var(--ws-blue)}.btn--lg{padding:16px 28px;font-size:1.05rem}.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none!important}.section{padding:64px 0}.section--soft{background:var(--ws-bg-soft)}.section__head{text-align:center;max-width:720px;margin:0 auto 40px}.section__head .lead{font-size:1.1rem;color:var(--ws-muted)}.card{background:var(--ws-bg);border:1px solid var(--ws-border);border-radius:var(--ws-radius-lg);padding:28px;box-shadow:var(--ws-shadow-sm);transition:transform .15s ease,box-shadow .15s ease}.card:hover{transform:translateY(-2px);box-shadow:var(--ws-shadow-md)}.card h3{margin-top:0}.grid{display:grid;gap:20px}.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.grid--3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.grid--4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.hero{padding:80px 0 60px;background:radial-gradient(1200px 400px at 80% -10%,var(--ws-blue-soft) 0%,transparent 60%),var(--ws-bg)}.hero h1{max-width:800px}.hero .lead{font-size:1.2rem;color:var(--ws-muted);max-width:660px;margin-bottom:32px}.hero__ctas{display:flex;gap:12px;flex-wrap:wrap}.site-header{position:sticky;top:0;z-index:50;background:#ffffffeb;backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--ws-border)}.site-header__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:24px}.brand{font-weight:800;font-size:1.15rem;letter-spacing:-.01em;color:var(--ws-ink);display:inline-flex;align-items:center;gap:8px}.brand__dot{display:inline-block;width:10px;height:10px;border-radius:50%;background:var(--ws-blue)}.nav{display:flex;gap:22px;align-items:center;flex-wrap:wrap}.nav a{color:var(--ws-ink);font-weight:500;font-size:.95rem}.nav a:hover{color:var(--ws-blue)}.site-footer{background:var(--ws-ink);color:#cbd5e1;padding:48px 0 24px;margin-top:80px}.site-footer h4{color:#fff;font-size:1rem;margin-bottom:14px}.site-footer a{color:#cbd5e1}.site-footer a:hover{color:#fff}.site-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}@media(max-width:720px){.site-footer__grid{grid-template-columns:1fr 1fr}}.site-footer__bottom{margin-top:32px;padding-top:20px;border-top:1px solid #1e293b;font-size:.85rem;color:#94a3b8;display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}.form{display:grid;gap:16px;max-width:560px}.form label{display:block;font-weight:600;font-size:.92rem;margin-bottom:6px;color:var(--ws-ink)}.form input,.form select,.form textarea{width:100%;padding:12px 14px;border:1px solid var(--ws-border);border-radius:var(--ws-radius);font:inherit;color:var(--ws-ink);background:var(--ws-bg);transition:border-color .15s ease,box-shadow .15s ease}.form input:focus,.form select:focus,.form textarea:focus{outline:0;border-color:var(--ws-blue);box-shadow:0 0 0 3px #0b6dff26}.form textarea{min-height:120px;resize:vertical}.form .hint{font-size:.85rem;color:var(--ws-muted)}.form .row-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:560px){.form .row-2{grid-template-columns:1fr}}.tariff{display:flex;flex-direction:column;gap:14px;position:relative}.tariff--featured{border-color:var(--ws-blue);box-shadow:0 4px 24px #0b6dff1f}.tariff__badge{position:absolute;top:-10px;right:20px;background:var(--ws-blue);color:#fff;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.tariff__price{font-size:2rem;font-weight:800;color:var(--ws-ink)}.tariff__price small{font-size:.9rem;color:var(--ws-muted);font-weight:500}.tariff__features{list-style:none;padding:0;margin:0;display:grid;gap:8px}.tariff__features li{position:relative;padding-left:24px;font-size:.95rem;color:var(--ws-ink)}.tariff__features li:before{content:"✓";position:absolute;left:0;top:0;color:var(--ws-accent);font-weight:700}.eyebrow{display:inline-block;font-size:.82rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--ws-blue);margin-bottom:12px}.muted{color:var(--ws-muted)}.center{text-align:center}.alert{background:var(--ws-blue-soft);border:1px solid #c7dcff;border-radius:var(--ws-radius);padding:16px 20px;color:var(--ws-ink);font-size:.95rem}.alert--success{background:#e8faf2;border-color:#a7eccd}.alert--warn{background:#fff7e6;border-color:#fde2a7}.tag{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--ws-bg-soft);border:1px solid var(--ws-border);font-size:.8rem;color:var(--ws-muted);margin-right:6px;margin-bottom:6px}.calc-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;align-items:start}@media(max-width:980px){.calc-layout{grid-template-columns:1fr}}.calc-group{margin-bottom:28px}.calc-group__head{display:flex;align-items:center;gap:10px;margin-bottom:14px;font-weight:700;font-size:1.1rem}.calc-item{display:grid;grid-template-columns:28px 1fr 96px 80px 110px;gap:14px;align-items:center;padding:12px 14px;border:1px solid var(--ws-border);border-radius:var(--ws-radius);background:var(--ws-bg);margin-bottom:8px;transition:border-color .15s ease,background .15s ease}.calc-item:hover{border-color:#c7dcff;background:#fafcff}.calc-item--active{border-color:var(--ws-blue);background:var(--ws-blue-soft)}.calc-item input[type=checkbox]{width:20px;height:20px;margin:0;accent-color:var(--ws-blue);cursor:pointer}.calc-item__title{font-weight:600;font-size:.95rem;line-height:1.35}.calc-item__hint{font-size:.82rem;color:var(--ws-muted);margin-top:2px}.calc-item__qty{width:96px;padding:8px 10px;border:1px solid var(--ws-border);border-radius:8px;font:inherit;text-align:center}.calc-item__qty:disabled{background:var(--ws-bg-soft);color:var(--ws-muted)}.calc-item__unit{font-size:.85rem;color:var(--ws-muted)}.calc-item__price{font-weight:700;text-align:right;font-variant-numeric:tabular-nums}@media(max-width:720px){.calc-item{grid-template-columns:28px 1fr auto;row-gap:6px;column-gap:10px}.calc-item>input[type=checkbox]{grid-column:1;grid-row:1}.calc-item>div:first-of-type{grid-column:2;grid-row:1}.calc-item__qty{grid-column:2;grid-row:2;width:100%}.calc-item__unit{grid-column:3;grid-row:2;align-self:center;white-space:nowrap}.calc-item__price{grid-column:3;grid-row:1;text-align:right;align-self:start}}.calc-tariffs{display:grid;gap:8px}.calc-tariff-option{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--ws-border);border-radius:var(--ws-radius);cursor:pointer;transition:border-color .15s ease,background .15s ease}.calc-tariff-option:hover{border-color:#c7dcff}.calc-tariff-option--active{border-color:var(--ws-blue);background:var(--ws-blue-soft)}.calc-tariff-option input[type=radio]{accent-color:var(--ws-blue);cursor:pointer}.calc-tariff-option__title{font-weight:600}.calc-tariff-option__price{margin-left:auto;font-weight:700;font-variant-numeric:tabular-nums}.calc-summary{position:sticky;top:84px;background:var(--ws-bg);border:1px solid var(--ws-border);border-radius:var(--ws-radius-lg);padding:24px;box-shadow:var(--ws-shadow-md)}.calc-summary h3{margin-top:0}.calc-summary__row{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:1px dashed var(--ws-border)}.calc-summary__row:last-of-type{border-bottom:0}.calc-summary__label{color:var(--ws-muted);font-size:.92rem}.calc-summary__value{font-weight:700;font-size:1.1rem;font-variant-numeric:tabular-nums}.calc-summary__value--big{font-size:1.5rem;color:var(--ws-blue)}.calc-summary__btn{width:100%;justify-content:center;margin-top:16px}.calc-summary__note{font-size:.82rem;color:var(--ws-muted);margin-top:12px;line-height:1.4}.case{display:flex;flex-direction:column;gap:14px}.case__problem,.case__solution,.case__result{font-size:.95rem}.case__label{font-size:.72rem;text-transform:uppercase;font-weight:700;letter-spacing:.06em;margin-bottom:4px}.case__problem .case__label{color:#dc2626}.case__solution .case__label{color:var(--ws-blue)}.case__result .case__label{color:var(--ws-accent)}