/* Surgutgazstroy — public website. Palette derived from the supplied logo. */
:root{--brand:#c41220;--brand-hover:#990d16;--brand-dark:#790a10;--brand-soft:#fcf0f1;--text:#232326;--text-soft:#4e4e54;--muted:#68686f;--line:#dcdce0;--surface:#fff;--surface-soft:#f4f4f5;--bg:#fff;--font:Arial,"Helvetica Neue",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:1rem/1.75 var(--font);-webkit-font-smoothing:antialiased}a{color:var(--brand);text-underline-offset:.22em}a:hover{color:var(--brand-hover)}a,button,input{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--brand);outline-offset:5px}img{max-width:100%}button,input{font:inherit}h1,h2,p{overflow-wrap:break-word}h1,h2{text-wrap:balance}p{margin:0 0 1.35rem}.wrap{width:min(1280px,calc(100% - 96px));margin-inline:auto}
.site-header{background:#fff;border-top:5px solid var(--brand)}.header-inner{min-height:146px;display:flex;align-items:center;justify-content:space-between;gap:32px}.brand{display:flex;flex-shrink:0}.brand-logo{display:block;width:200px;height:136px;object-fit:contain}.header-side{display:flex;align-items:center;gap:40px}.header-caption{max-width:225px;color:var(--muted);font-size:.875rem;line-height:1.5}.header-contact{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:8px 26px;border:1px solid var(--line);text-decoration:none;color:var(--text);font-size:.875rem;font-weight:700}.header-contact:hover{background:var(--brand);border-color:var(--brand);color:white}
.main-nav{background:var(--text)}.nav-inner{display:flex;flex-wrap:wrap;align-items:stretch;gap:0 12px}.main-nav a{display:flex;align-items:center;min-height:58px;padding:14px 20px;color:#e2e2e5;text-decoration:none;font-size:.875rem;font-weight:600;line-height:1.5;border-bottom:3px solid transparent;overflow-wrap:anywhere;max-width:100%}.main-nav a:first-child{padding-left:0;padding-right:24px}.main-nav a:hover{color:#fff;background:#303034}.main-nav a.active{color:#fff;border-bottom-color:#ed3340}.main-nav a:focus-visible{outline-color:#fff;outline-offset:-5px}
.content{min-height:65vh;padding-block:56px 88px}.hero{display:grid;grid-template-columns:minmax(0,1fr) 285px;gap:56px;padding:30px 0 62px;border-bottom:1px solid var(--line);margin-bottom:0}.hero-main{padding-block:12px}.hero-kicker,.eyebrow{display:flex;align-items:center;gap:14px;color:var(--brand);font-size:.875rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;line-height:1.5}.hero-kicker:before,.eyebrow:before{content:"";width:28px;height:2px;flex-shrink:0;background:currentColor}.hero h1{font-size:clamp(2.3rem,4.1vw,3.75rem);line-height:1.12;letter-spacing:-.045em;font-weight:600;margin:26px 0}.hero-main>p{font-size:1.125rem;color:var(--text-soft);line-height:1.7;max-width:650px;margin:0}.hero-facts{background:var(--brand);color:white;padding:18px 28px;align-self:stretch;display:flex;flex-direction:column;justify-content:center;border-bottom:8px solid var(--brand-dark)}.hero-facts>div{padding:22px 0;border-bottom:1px solid #ffffff40}.hero-facts>div:last-child{border-bottom:0}.hero-facts span{display:block;color:#ffe0e2;font-size:.875rem;margin-bottom:6px}.hero-facts strong{display:block;font-size:1.125rem;line-height:1.5;font-weight:500;font-variant-numeric:tabular-nums}
.card{padding:34px;border:1px solid var(--line);background:var(--surface);margin-bottom:24px}.card h2{font-size:1.5rem;line-height:1.35;letter-spacing:-.025em;font-weight:600;margin:0 0 24px}.card p{color:var(--text-soft)}.card p:last-child{margin-bottom:0}.editorial-section{display:grid;grid-template-columns:285px minmax(0,1fr);gap:56px;padding:48px 0;border:0;border-bottom:1px solid var(--line);margin:0}.editorial-section h2{max-width:250px;margin:0}.section-copy{min-width:0;max-width:850px}.section-copy p{margin-bottom:22px}.notice{display:grid;grid-template-columns:285px minmax(0,1fr);column-gap:56px;background:var(--surface-soft);border-top:3px solid var(--brand);padding:32px;margin-top:48px}.notice strong{grid-row:1/3;font-size:1.125rem;font-weight:600;line-height:1.5}.notice p{color:var(--text-soft);font-size:1rem}.notice p:last-child{margin:0}
.page-head{padding:12px 0 36px;margin-bottom:32px;border-bottom:1px solid var(--line)}.page-head h1,.document-detail h1{font-size:clamp(2rem,3.8vw,3.25rem);font-weight:600;line-height:1.17;letter-spacing:-.035em;margin:20px 0 12px;max-width:1000px}.page-head p{color:var(--muted);margin:0}.page-head-row{display:flex;justify-content:space-between;gap:24px}.grid-two{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:28px}.grid-two .card{margin:0;border-top:3px solid var(--brand)}.muted-card{background:var(--surface-soft)}.details{display:grid;grid-template-columns:100px minmax(0,1fr);gap:20px 24px;margin:0}.details dt{font-size:.875rem;color:var(--muted)}.details dd{margin:0;overflow-wrap:anywhere}.prose{max-width:1000px;padding:36px 40px;border-left:3px solid var(--brand)}
.search-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;background:var(--surface-soft);padding:20px;margin-bottom:32px}.search-bar input[type=search]{min-width:0;flex:1 1 220px;height:50px;background:#fff;border:1px solid var(--line);padding:0 16px;border-radius:0;color:var(--text)}.search-bar button,.btn{min-height:50px;padding:10px 24px;display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:0;text-decoration:none;cursor:pointer;font-size:.875rem;font-weight:700}.search-bar button,.btn-primary{background:var(--brand);color:#fff}.search-bar button:hover,.btn-primary:hover{background:var(--brand-hover);color:#fff}.search-bar>a{font-size:.875rem}.btn-secondary{background:var(--surface-soft);border-color:var(--line);color:var(--text)}
.documents-list{border-top:1px solid var(--line)}.document-card{padding:30px 24px;border-bottom:1px solid var(--line);border-left:3px solid transparent;transition:background .15s,border-color .15s}.document-card:hover{background:var(--surface-soft);border-left-color:var(--brand)}.document-meta{display:flex;flex-wrap:wrap;gap:8px 28px;color:var(--muted);font-size:.875rem;line-height:1.5}.document-card h2{font-size:1.375rem;font-weight:600;line-height:1.45;margin:14px 0 12px}.document-card h2 a{color:var(--text);text-decoration:none}.document-card h2 a:hover{color:var(--brand);text-decoration:underline}.document-card p{color:var(--text-soft);max-width:940px;font-size:1rem;margin:0}.document-actions{display:flex;flex-wrap:wrap;gap:16px 28px;margin-top:20px}.document-actions a{font-size:.875rem;font-weight:700}.document-download{color:var(--text-soft)}.pagination{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:32px}.pagination a,.pagination span{display:grid;place-items:center;min-width:44px;min-height:44px;padding:6px 12px;border:1px solid var(--line);text-decoration:none;font-size:.875rem}.pagination a.active{color:white;background:var(--brand);border-color:var(--brand)}.pagination a:hover{border-color:var(--brand)}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:12px;font-size:.875rem;margin-bottom:32px}.breadcrumbs a{color:var(--muted)}.detail-meta{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));background:var(--surface-soft);border-top:2px solid var(--brand);margin:32px 0;max-width:1000px}.detail-meta>div{padding:22px 28px}.detail-meta dt{display:block;color:var(--muted);font-size:.875rem;margin-bottom:6px}.detail-meta dd{margin:0;font-size:1rem;font-weight:500}.file-box{display:flex;align-items:center;justify-content:space-between;gap:24px;border:1px solid var(--line);padding:24px;max-width:1000px}.file-box>div{display:flex;align-items:center;gap:20px;min-width:0}.file-box strong{overflow-wrap:anywhere;font-weight:500}.file-type{display:grid;place-items:center;background:var(--brand-soft);color:var(--brand);padding:12px;min-height:52px;font-size:.875rem;font-weight:700}.file-box .btn{flex-shrink:0}.empty-state{padding:56px 24px;text-align:center;background:var(--surface-soft);border:1px solid var(--line);color:var(--muted)}
.site-footer{background:var(--text);border-top:5px solid var(--brand);color:#fff}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:40px;padding-block:42px}.footer-company{display:flex;flex-direction:column;gap:10px;color:#bfbfc6;font-size:.875rem}.footer-company strong{font-size:1rem;color:#fff;font-weight:500}.footer-nav{display:flex;flex-wrap:wrap;gap:16px 28px}.footer-nav a{color:#e2e2e5;font-size:.875rem;text-decoration:none}.footer-nav a:hover{color:white;text-decoration:underline}.footer-copy{font-size:.875rem}
@media(min-width:1500px){.hero{gap:80px}.hero h1{font-size:4rem}}
@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.hero{grid-template-columns:minmax(0,1fr) 245px;gap:28px}.hero h1{font-size:2.75rem}.hero-facts{padding-inline:20px}.editorial-section{grid-template-columns:220px minmax(0,1fr);gap:32px}.notice{grid-template-columns:200px minmax(0,1fr);gap:24px}.grid-two{grid-template-columns:1fr}.header-side{gap:24px}}
@media(max-width:700px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:110px;gap:16px}.brand-logo{width:145px;height:98px}.header-caption{display:none}.header-contact{padding-inline:18px}.nav-inner{gap:0}.main-nav a,.main-nav a:first-child{padding:12px;min-height:48px;flex:0 1 auto}.content{padding-block:26px 48px}.hero{grid-template-columns:1fr;gap:28px;padding:14px 0 32px}.hero h1{font-size:clamp(2rem,7.5vw,3rem);letter-spacing:-.035em;margin:20px 0}.hero-main{padding:0}.hero-main>p{font-size:1rem}.hero-facts{padding:8px 22px;border-bottom-width:5px}.hero-facts>div{padding:16px 0;display:flex;justify-content:space-between;gap:18px;align-items:baseline}.hero-facts span{margin:0}.hero-facts strong{font-size:1rem;text-align:right}.editorial-section{grid-template-columns:1fr;gap:24px;padding:32px 0}.editorial-section h2{max-width:none}.notice{display:block;padding:24px;margin-top:32px}.notice strong{display:block;margin-bottom:18px}.page-head{padding-top:8px;margin-bottom:24px;padding-bottom:24px}.page-head h1,.document-detail h1{font-size:2rem}.card{padding:24px}.editorial-section{padding:32px 0}.details{grid-template-columns:1fr;gap:4px}.details dd{margin-bottom:16px}.details dd:last-child{margin-bottom:0}.search-bar{padding:14px}.document-card{padding:24px 16px}.detail-meta{grid-template-columns:1fr}.detail-meta>div+div{border-top:1px solid var(--line)}.file-box{align-items:stretch;flex-direction:column;padding:20px}.footer-inner{flex-direction:column;align-items:flex-start;gap:28px;padding-block:32px}.footer-nav{gap:20px}.hero-kicker,.eyebrow{letter-spacing:.06em}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
@media print{.main-nav,.header-side,.footer-nav,.search-bar,.pagination{display:none}.wrap{width:100%}.content{padding:16px 0}.hero,.editorial-section{break-inside:avoid}.hero-facts,.site-footer{background:white;color:black}.hero-facts span,.footer-company,.footer-company strong{color:black}.card,.notice{box-shadow:none}a{color:inherit}.site-footer{border-top:1px solid #aaa}}

/* One shared row for the brand mark and navigation. */
.site-header{background:var(--text);border-top:4px solid var(--brand)}
.header-inner{display:flex;align-items:stretch;justify-content:flex-start;gap:24px;min-height:84px}
.header-inner>.brand{align-self:center;display:flex;align-items:center;justify-content:center;flex:0 0 64px;width:64px;height:64px;background:transparent}
.brand-logo{display:block;width:60px;height:60px;object-fit:contain}
.header-inner>.main-nav{flex:1;min-width:0;display:flex;align-items:stretch}
.nav-inner{width:100%;margin:0;align-items:stretch;gap:0 8px}
.main-nav a,.main-nav a:first-child{padding:18px 20px;min-height:80px}
@media(max-width:1000px){.header-inner{gap:16px}.main-nav a,.main-nav a:first-child{padding-inline:14px}}
@media(max-width:700px){
 .header-inner{min-height:72px;gap:12px}
 .header-inner>.brand{flex-basis:52px;width:52px;height:52px}
 .brand-logo{width:48px;height:48px}
 .nav-inner{flex-wrap:nowrap;overflow-x:auto;gap:0;scrollbar-width:thin;scrollbar-color:#777 var(--text)}
 .main-nav a,.main-nav a:first-child{flex:0 0 auto;min-height:68px;padding:14px 12px;white-space:nowrap;max-width:none}
}
@media print{.site-header{background:white}.header-inner{min-height:64px}}