:root{--c-primary: #0A1628;--c-primary-light: #1A2744;--c-accent: #E87511;--c-accent-hover: #D06810;--c-blue: #1269EC;--c-blue-hover: #0F5BD4;--c-bg: #FFFFFF;--c-bg-alt: #F5F7FA;--c-text: #1A1A2E;--c-text-secondary: #6B7280;--c-text-light: #9CA3AF;--c-border: #E5E7EB;--c-glass: rgba(255, 255, 255, .08);--max-w: 1200px;--section-py: 96px;--header-h: 64px}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;color:var(--c-text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}h1,h2,h3,h4,h5,h6{margin:0;line-height:1.2}p{margin:0}a{color:var(--c-blue);text-decoration:none}a:hover{color:var(--c-blue-hover)}.container{max-width:var(--max-w);margin:0 auto;width:100%}.section{padding:var(--section-py) 24px}.section--dark{background:var(--c-primary);color:#fff}.section--alt{background:var(--c-bg-alt)}.section__title{font-size:36px;font-weight:700;margin-bottom:16px;text-align:center}.section__subtitle{font-size:18px;color:var(--c-text-secondary);text-align:center;max-width:680px;margin:0 auto 56px;line-height:1.6}.section--dark .section__subtitle{color:#ffffffb3}.header{position:fixed;top:0;left:0;right:0;height:var(--header-h);background:transparent;border-bottom:1px solid transparent;z-index:100;display:flex;align-items:center;padding:0 24px;transition:background .3s,border-color .3s,box-shadow .3s}.header--solid{background:#fffffff2;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:var(--c-border);box-shadow:0 2px 12px #0000000f}.header--solid .header__link,.header--solid .header__burger{color:var(--c-text)}.header__inner{max-width:var(--max-w);margin:0 auto;width:100%;display:flex;align-items:center;justify-content:space-between}.header__nav{display:flex;align-items:center;gap:32px}.header__link{color:#ffffffd9;font-size:14px;font-weight:500;cursor:pointer;background:none;border:none;padding:0;font-family:inherit;transition:color .2s}.header__link:hover{color:var(--c-accent)}.header__actions{display:flex;align-items:center;gap:12px}.header__burger{display:none;background:none;border:none;font-size:22px;cursor:pointer;color:#ffffffd9;padding:4px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:8px;font-size:16px;font-weight:600;font-family:inherit;cursor:pointer;border:2px solid transparent;transition:background .2s,border-color .2s,transform .15s;text-decoration:none;white-space:nowrap}.btn:active{transform:scale(.97)}.btn--accent{background:var(--c-accent);color:#fff;border-color:var(--c-accent)}.btn--accent:hover{background:var(--c-accent-hover);border-color:var(--c-accent-hover);color:#fff}.btn--ghost{background:transparent;color:#fff;border-color:#fff6}.btn--ghost:hover{background:#ffffff1a;border-color:#ffffffb3;color:#fff}.btn--outline{background:transparent;color:var(--c-text);border-color:var(--c-border)}.btn--outline:hover{border-color:var(--c-accent);color:var(--c-accent)}.btn--sm{padding:8px 20px;font-size:14px}.btn--blue{background:var(--c-blue);color:#fff;border-color:var(--c-blue)}.btn--blue:hover{background:var(--c-blue-hover);border-color:var(--c-blue-hover);color:#fff}.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:120px 24px 80px;background-color:var(--c-primary);background-size:cover;background-position:center;background-repeat:no-repeat;color:#fff;text-align:center;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;background:#0a1628a6;pointer-events:none}.hero__content{position:relative;max-width:800px}.hero__title{font-size:52px;font-weight:800;line-height:1.15;margin-bottom:20px;letter-spacing:-.02em}.hero__subtitle{font-size:20px;color:#ffffffbf;margin-bottom:40px;line-height:1.6;max-width:620px;margin-left:auto;margin-right:auto}.hero__actions{display:flex;justify-content:center;gap:16px;margin-bottom:56px;flex-wrap:wrap}.hero__metrics{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}.hero__metric{text-align:center}.hero__metric-value{font-size:32px;font-weight:700;color:var(--c-accent)}.hero__metric-label{font-size:14px;color:#fff9;margin-top:4px}.card-grid{display:grid;gap:24px}.card-grid--2{grid-template-columns:repeat(2,1fr)}.card-grid--3{grid-template-columns:repeat(3,1fr)}.card-grid--4{grid-template-columns:repeat(2,1fr)}.card{background:var(--c-bg);border:1px solid var(--c-border);border-radius:12px;padding:32px 24px;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-4px);box-shadow:0 8px 32px #00000014}.card__icon{font-size:32px;color:var(--c-accent);margin-bottom:16px;display:block}.card__title{font-size:18px;font-weight:600;margin-bottom:8px}.card__text{font-size:15px;color:var(--c-text-secondary);line-height:1.6}.card__link{display:inline-flex;align-items:center;gap:4px;font-size:14px;font-weight:600;color:var(--c-accent);margin-top:16px;cursor:pointer;background:none;border:none;padding:0;font-family:inherit}.card__link:hover{color:var(--c-accent-hover)}.card--glass{background:#ffffff0f;border-color:#ffffff1a;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.card--glass .card__text{color:#ffffffb3}.card--glass .card__title{color:#fff}.card--product{border-top:3px solid transparent;text-align:center}.card--product:hover{border-top-color:var(--c-accent)}.problems .card__icon{width:48px;height:48px;border-radius:12px;background:#e875111a;display:flex;align-items:center;justify-content:center;font-size:22px;margin-bottom:16px}.calc-split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}.calc-preview{background:var(--c-primary);border-radius:16px;padding:40px;color:#fff;min-height:360px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;position:relative;overflow:hidden}.calc-preview:before{content:"";position:absolute;inset:0;background:linear-gradient(45deg,transparent 48%,rgba(232,117,17,.15) 49%,rgba(232,117,17,.15) 51%,transparent 52%),linear-gradient(-45deg,transparent 48%,rgba(18,105,236,.1) 49%,rgba(18,105,236,.1) 51%,transparent 52%);background-size:60px 60px;opacity:.5}.calc-preview__icon{font-size:64px;color:var(--c-accent);margin-bottom:16px;position:relative}.calc-preview__text{font-size:16px;color:#fff9;position:relative}.calc-features{list-style:none;padding:0;margin:0 0 32px}.calc-features li{display:flex;align-items:flex-start;gap:12px;padding:10px 0;font-size:15px;line-height:1.5}.calc-features li .anticon{color:var(--c-accent);font-size:18px;margin-top:2px;flex-shrink:0}.calc-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:64px}.calc-step{text-align:center}.calc-step__num{width:48px;height:48px;border-radius:50%;background:var(--c-accent);color:#fff;font-size:20px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px}.calc-step__title{font-size:16px;font-weight:600;margin-bottom:8px}.calc-step__text{font-size:14px;color:var(--c-text-secondary)}.tabs{margin-top:40px}.tabs__nav{display:flex;gap:0;border-bottom:2px solid var(--c-border);margin-bottom:32px;overflow-x:auto}.tabs__btn{padding:12px 24px;font-size:15px;font-weight:500;color:var(--c-text-secondary);background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;font-family:inherit;white-space:nowrap;transition:color .2s,border-color .2s}.tabs__btn:hover{color:var(--c-text)}.tabs__btn--active{color:var(--c-accent);border-bottom-color:var(--c-accent);font-weight:600}.tabs__content{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.tabs__preview{background:var(--c-bg-alt);border-radius:12px;padding:40px;min-height:280px;display:flex;align-items:center;justify-content:center;border:1px solid var(--c-border)}.tabs__preview-icon{font-size:56px;color:var(--c-text-light)}.tabs__preview-img{width:100%;height:100%;object-fit:cover;border-radius:12px}.tabs__info h3{font-size:24px;margin-bottom:12px}.tabs__info p{font-size:16px;color:var(--c-text-secondary);line-height:1.7;margin-bottom:20px}.tabs__info ul{list-style:none;padding:0;margin:0}.tabs__info li{display:flex;align-items:center;gap:8px;padding:6px 0;font-size:15px}.tabs__info li .anticon{color:var(--c-accent);font-size:14px}.marketplace-form{max-width:600px;margin:48px auto 0;background:#ffffff0f;border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:32px}.marketplace-form h3{font-size:20px;margin-bottom:8px;color:#fff}.marketplace-form p{font-size:14px;color:#fff9;margin-bottom:24px}.audience-card{position:relative;overflow:hidden}.audience-card__header{height:180px;display:flex;align-items:center;justify-content:center;border-radius:12px 12px 0 0;margin:-32px -24px 24px;position:relative}.audience-card__header--quarry{background:linear-gradient(135deg,#1a3a5c,#0f2847)}.audience-card__header--contractor{background:linear-gradient(135deg,#3a2e1a,#5c4a2e)}.audience-card__header--supplier{background:linear-gradient(135deg,#1a3a2e,#0f4735)}.audience-card__header-icon{font-size:48px;color:#fff9}.audience-card ul{list-style:none;padding:0;margin:0}.audience-card li{display:flex;align-items:flex-start;gap:8px;padding:8px 0;font-size:15px;line-height:1.5}.audience-card li .anticon{color:var(--c-accent);font-size:14px;margin-top:4px;flex-shrink:0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;text-align:center}.stat__value{font-size:56px;font-weight:800;color:var(--c-accent);line-height:1;margin-bottom:8px}.stat__label{font-size:15px;color:var(--c-text-secondary);line-height:1.4}.advantages-list{display:grid;gap:0;max-width:800px;margin:0 auto}.advantage{display:grid;grid-template-columns:56px 1fr;gap:20px;padding:24px 0;border-bottom:1px solid var(--c-border);align-items:start}.advantage:last-child{border-bottom:none}.advantage__icon{width:56px;height:56px;border-radius:12px;background:#e875111a;display:flex;align-items:center;justify-content:center;font-size:24px;color:var(--c-accent)}.advantage__title{font-size:17px;font-weight:600;margin-bottom:4px}.advantage__text{font-size:15px;color:var(--c-text-secondary);line-height:1.5}.cta-section{background:linear-gradient(135deg,var(--c-primary) 0%,#0F2847 100%);color:#fff}.cta-cards{display:grid;grid-template-columns:1fr 1fr;gap:32px;max-width:800px;margin:0 auto}.cta-card{background:#ffffff0f;border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:40px 32px;text-align:center}.cta-card h3{font-size:20px;margin-bottom:12px}.cta-card p{font-size:15px;color:#ffffffa6;margin-bottom:24px;line-height:1.6}.footer{background:var(--c-primary);color:#ffffffb3;padding:64px 24px 32px}.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}.footer__desc{font-size:15px;line-height:1.7;max-width:320px}.footer__col-title{font-size:14px;font-weight:600;color:#fff;text-transform:uppercase;letter-spacing:.05em;margin-bottom:16px}.footer__col a,.footer__col button{display:block;color:#fff9;font-size:14px;padding:4px 0;background:none;border:none;cursor:pointer;font-family:inherit;text-align:left;transition:color .2s}.footer__col a:hover,.footer__col button:hover{color:#fff}.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:#fff6}.footer__legal{display:flex;gap:24px}.footer__legal a{color:#fff6;font-size:13px}.footer__legal a:hover{color:#ffffffb3}.reveal{opacity:0;transform:translateY(28px);transition:opacity .6s ease,transform .6s ease}.reveal--visible{opacity:1;transform:translateY(0)}.stagger>*{opacity:0;transform:translateY(20px);transition:opacity .5s ease,transform .5s ease}.stagger.reveal--visible>*:nth-child(1){opacity:1;transform:none;transition-delay:0ms}.stagger.reveal--visible>*:nth-child(2){opacity:1;transform:none;transition-delay:80ms}.stagger.reveal--visible>*:nth-child(3){opacity:1;transform:none;transition-delay:.16s}.stagger.reveal--visible>*:nth-child(4){opacity:1;transform:none;transition-delay:.24s}.stagger.reveal--visible>*:nth-child(5){opacity:1;transform:none;transition-delay:.32s}@media(max-width:1024px){:root{--section-py: 72px}.hero__title{font-size:40px}.hero__metrics{gap:32px}.calc-split,.tabs__content{grid-template-columns:1fr}.footer__grid{grid-template-columns:1fr 1fr;gap:32px}}@media(max-width:768px){:root{--section-py: 56px}.header__nav{display:none;position:fixed;top:var(--header-h);left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:0;border-bottom:1px solid var(--c-border);box-shadow:0 8px 24px #00000014}.header__nav--open{display:flex}.header__link{padding:12px 0;font-size:16px}.header__burger{display:block}.hero{min-height:auto;padding:120px 20px 64px}.hero__title{font-size:32px}.hero__subtitle{font-size:17px}.hero__actions{flex-direction:column;align-items:center}.hero__metrics{flex-direction:column;gap:20px}.hero__metric-value,.section__title{font-size:28px}.section__subtitle{font-size:16px;margin-bottom:40px}.card-grid--2,.card-grid--3,.card-grid--4{grid-template-columns:1fr}.calc-steps{grid-template-columns:1fr;gap:24px}.stats-grid{grid-template-columns:repeat(2,1fr);gap:24px}.cta-cards{grid-template-columns:1fr}.footer__grid{grid-template-columns:1fr;gap:24px}.footer__bottom{flex-direction:column;gap:12px;text-align:center}.tabs__nav{gap:0}.tabs__btn{padding:10px 16px;font-size:14px}}@media(max-width:480px){.stat__value{font-size:40px}.hero__title{font-size:28px}.btn{width:100%}}