:root{
  --len:#EFE6D6; --len2:#F7F1E6; --paper:#FBF8F2;
  --cedar:#B8743A; --cedar-d:#8E5424; --cedar-l:#E3B988;
  --steam:#7C9AAE; --steam-l:#D7E1E7;
  --ink:#2B2A28; --ink2:#5E5A53; --line:#DCCFB9;
  --r-card:22px;
  --sh:0 18px 40px -22px rgba(74,48,20,.35);
  --f-h:'Unbounded',system-ui,sans-serif; --f-t:'Manrope',system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--len);color:var(--ink);font:400 17px/1.6 var(--f-t);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--cedar-d)}
h1,h2,h3{font-family:var(--f-h);font-weight:700;line-height:1.08;letter-spacing:-.01em;margin:0}
h1 em,h2 em{font-style:normal;color:var(--cedar)}
main{position:relative}

/* ---------- шапка и бирки ---------- */
.bk-top{position:absolute;inset:0 0 auto;z-index:5;display:flex;justify-content:space-between;align-items:flex-start;padding:22px clamp(16px,4vw,64px) 0}
.bk-logo{display:flex;align-items:center;gap:14px;text-decoration:none;color:var(--ink)}
.bk-logo__ring{width:58px;height:58px;border-radius:50%;flex:none;box-shadow:inset 0 0 0 4px #7a4a22,0 6px 14px -6px rgba(74,48,20,.6);
  background:repeating-radial-gradient(circle at 46% 54%,#e9c28f 0 3px,#d39c5e 3px 4px,#e7bd86 4px 7px,#c98d4f 7px 8px)}
.bk-logo__name{font:700 20px/1.1 var(--f-h);text-transform:uppercase;letter-spacing:.01em}
.bk-logo__name small{display:block;margin-top:5px;font:500 13px var(--f-t);text-transform:none;color:var(--ink2)}
.bk-tags{display:flex;gap:22px;margin-top:-22px}
.bk-tag{position:relative;display:block;padding-top:34px;text-decoration:none;color:var(--ink);transform-origin:50% 0;animation:bk-sway 6s ease-in-out infinite}
.bk-tag:nth-child(2){animation-delay:-2.4s}
.bk-tag::before,.bk-tag::after{content:"";position:absolute;top:0;width:2px;height:38px;background:#8a6a45}
.bk-tag::before{left:22%;transform:rotate(-4deg)}
.bk-tag::after{right:22%;transform:rotate(4deg)}
.bk-tag span{display:block;position:relative;padding:12px 22px;border-radius:10px;font:600 15px var(--f-t);
  background:linear-gradient(180deg,#f0c891,#d9a465);box-shadow:inset 0 0 0 1px rgba(120,70,25,.35),0 10px 18px -10px rgba(74,48,20,.7);
  background-image:repeating-linear-gradient(92deg,rgba(255,255,255,.08) 0 3px,rgba(120,70,25,.07) 3px 5px),linear-gradient(180deg,#f0c891,#d9a465)}
.bk-tag span::before,.bk-tag span::after{content:"";position:absolute;top:7px;width:7px;height:7px;border-radius:50%;background:#6b4a27;box-shadow:inset 0 1px 1px rgba(0,0,0,.4)}
.bk-tag span::before{left:18%}.bk-tag span::after{right:18%}
.bk-tag:hover{animation-play-state:paused;transform:rotate(-2deg) translateY(3px)}
.bk-tag.is-on span{background-image:repeating-linear-gradient(92deg,rgba(255,255,255,.08) 0 3px,rgba(120,70,25,.07) 3px 5px),linear-gradient(180deg,#e4ae6c,#c17f3d)}
@keyframes bk-sway{0%,100%{transform:rotate(-1.2deg)}50%{transform:rotate(1.2deg)}}

/* ---------- первый экран ---------- */
.bk-hero{position:relative;overflow:hidden;min-height:clamp(600px,48vw,780px);width:100%}
.bk-hero__photo{position:absolute;top:0;right:0;height:100%;aspect-ratio:1942/809}
.bk-hero__photo img,.bk-steam{position:absolute;inset:0;width:100%;height:100%;max-width:none}
.bk-hero::before{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;background:linear-gradient(90deg,var(--len) 0,var(--len) 26%,rgba(239,230,214,.85) 38%,rgba(239,230,214,0) 52%)}
.bk-hero__photo::after{content:"";position:absolute;inset:auto 0 0;height:120px;background:linear-gradient(transparent,var(--len))}
.bk-hero__text{position:relative;z-index:2;max-width:720px;padding:clamp(130px,11vw,180px) 0 90px clamp(16px,4vw,64px)}
.bk-hero h1{font-size:clamp(38px,4.1vw,62px);line-height:1.12}
.bk-lead{max-width:440px;margin:26px 0 30px;font-size:19px;color:var(--ink2)}
.bk-btn{display:inline-flex;align-items:center;gap:14px;padding:14px 26px 14px 14px;border-radius:999px;background:var(--ink);color:var(--paper);text-decoration:none;font-weight:600;transition:transform .25s,background .25s}
.bk-btn i{width:34px;height:34px;border-radius:50%;background:repeating-radial-gradient(circle,#e9c28f 0 2px,#c98d4f 2px 3px);transition:transform .6s}
.bk-btn:hover{background:var(--cedar-d);transform:translateY(-2px)}
.bk-btn:hover i{transform:rotate(200deg)}

/* ---------- общие заголовки секций ---------- */
section{padding:56px clamp(16px,4vw,64px)}
.bk-head h2{font-size:clamp(28px,3.4vw,46px)}
.bk-head p{margin:10px 0 0;color:var(--ink2)}
.bk-head{margin-bottom:28px}

/* ---------- разрез ---------- */
.bk-cut{padding-top:20px}
.bk-cut__wrap{display:grid;grid-template-columns:1fr 330px;gap:32px;align-items:center}
.bk-cut__stage{position:relative;transform:perspective(1400px) rotateX(var(--rx,0deg)) rotateY(var(--ry,0deg));transition:transform .4s ease-out}
.bk-cut__img{width:100%;height:auto;filter:drop-shadow(0 30px 30px rgba(74,48,20,.28))}
.bk-pin{position:absolute;left:var(--x);top:var(--y);transform:translate(-50%,-50%);width:46px;height:46px;border-radius:50%;border:3px solid #fff;
  background:var(--cedar-d);color:#fff;font:700 18px var(--f-h);cursor:pointer;box-shadow:0 6px 16px -4px rgba(60,30,8,.7);transition:transform .2s,background .2s}
.bk-pin::after{content:"";position:absolute;inset:-9px;border-radius:50%;border:2px solid rgba(255,255,255,.85);opacity:0;animation:bk-ping 2.4s ease-out infinite}
.bk-pin:hover{transform:translate(-50%,-50%) scale(1.12)}
.bk-pin.is-on{background:var(--cedar);transform:translate(-50%,-50%) scale(1.15)}
.bk-pin.is-on::after{opacity:1}
@keyframes bk-ping{0%{transform:scale(.8);opacity:.9}100%{transform:scale(1.5);opacity:0}}
.bk-card{background:var(--paper);border-radius:var(--r-card);padding:24px 24px 18px;box-shadow:var(--sh);border:1px solid var(--line)}
.bk-card header{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.bk-card__n{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--cedar);color:#fff;font:700 17px var(--f-h)}
.bk-card h3{font-size:20px}
.bk-card h4{margin:14px 0 4px;color:var(--cedar-d);font:700 15px var(--f-t)}
.bk-card p{margin:0;font-size:15px;line-height:1.5}
.bk-card ul{margin:0;padding:0;list-style:none;font-size:15px;line-height:1.45}
.bk-card li{position:relative;padding-left:16px;margin:3px 0}
.bk-card li::before{content:"";position:absolute;left:0;top:.55em;width:7px;height:7px;border-radius:50%;background:var(--cedar)}
.bk-card.is-in .bk-card__body{animation:bk-in .35s ease-out}
@keyframes bk-in{from{opacity:0;transform:translateY(8px)}}
.bk-dots{display:flex;justify-content:center;gap:8px;margin-top:16px}
.bk-dots button{width:10px;height:10px;padding:0;border:0;border-radius:50%;background:var(--line);cursor:pointer}
.bk-dots button.is-on{background:var(--cedar);width:26px;border-radius:5px;transition:width .25s}

/* ---------- сравнение ---------- */
.bk-vs{background:var(--len2);border-block:1px solid var(--line)}
.bk-vs__cols{display:grid;grid-template-columns:repeat(3,1fr)}
.bk-vs__col{padding:4px 30px}
.bk-vs__col+.bk-vs__col{border-left:1px dashed var(--line)}
.bk-vs__col:first-child{padding-left:0}
.bk-vs__ico{width:120px;height:70px;fill:none;stroke:var(--cedar-d);stroke-width:2.4;stroke-linejoin:round;stroke-linecap:round}
.bk-vs__col h3{margin:12px 0 6px;font-size:19px;color:var(--cedar)}
.bk-vs__col--frame h3,.bk-vs__col--frame .bk-vs__ico{color:var(--steam);stroke:#4f6f84}
.bk-vs__col--frame h3{color:#4f6f84}
.bk-vs__col p{margin:0 0 16px;font-size:15px;color:var(--ink2)}
.bk-vs dl{margin:0;display:grid;grid-template-columns:auto 1fr;gap:10px 14px;align-items:center;font-size:14px}
.bk-vs dt{font-weight:600}
.bk-vs dd{margin:0;display:grid;gap:3px}
.bk-vs dd i{display:block;height:8px;border-radius:4px;background:var(--line);position:relative;overflow:hidden}
.bk-vs dd i::after{content:"";position:absolute;inset:0;width:calc(var(--v)*100%);border-radius:4px;background:var(--cedar);transform-origin:left;transform:scaleX(0);transition:transform 1s cubic-bezier(.2,.7,.2,1) .2s}
.bk-vs__col--frame dd i::after{background:#6f8ea2}
.bk-vs__col--block dd i::after{background:var(--cedar-d)}
.bk-vs__col.is-seen dd i::after,.bk-vs__col:not(.bk-rise) dd i::after{transform:scaleX(1)}
.bk-vs dd span{color:var(--ink2);font-size:13px;line-height:1.3}

/* ---------- длина ---------- */
.bk-len{display:grid;grid-template-columns:minmax(300px,440px) 1fr;gap:40px;align-items:center}
.bk-range{position:relative;margin:4px 0 22px}
.bk-range input{width:100%;-webkit-appearance:none;appearance:none;height:30px;background:transparent;cursor:pointer;margin:0}
.bk-range input::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:linear-gradient(90deg,var(--cedar) var(--p,50%),var(--line) var(--p,50%))}
.bk-range input::-moz-range-track{height:4px;border-radius:2px;background:var(--line)}
.bk-range input::-moz-range-progress{height:4px;background:var(--cedar)}
.bk-range input::-webkit-slider-thumb{-webkit-appearance:none;width:30px;height:30px;margin-top:-13px;border-radius:50%;border:4px solid var(--paper);
  background:repeating-radial-gradient(circle,#c98d4f 0 2px,#8e5424 2px 3px);box-shadow:0 4px 10px rgba(74,48,20,.5)}
.bk-range input::-moz-range-thumb{width:24px;height:24px;border-radius:50%;border:4px solid var(--paper);background:var(--cedar-d)}
.bk-range__ticks{display:flex;justify-content:space-between;list-style:none;margin:6px 0 0;padding:0;font-size:14px;color:var(--ink2)}
.bk-len__sum{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:20px 24px;box-shadow:var(--sh)}
.bk-len__sum b{display:block;font:700 22px var(--f-h);color:var(--cedar);margin-bottom:6px}
.bk-len__sum p{margin:2px 0;font-size:15px}
.bk-len__more{display:inline-block;margin-top:12px;font-weight:600;font-size:15px;text-decoration:none;border-bottom:1px solid currentColor}
.bk-log a{color:var(--cedar-d);font-weight:600}
.bk-len__note{color:var(--ink2);margin-top:10px!important}
.bk-len__plan{margin:0}
.bk-len__plan svg{width:100%;height:auto;overflow:visible}
.bk-len__plan figcaption{font-size:13px;color:var(--ink2);text-align:center}
#lenSvg .sh{fill:#d3a067;stroke:#7a4a22;stroke-width:4;transition:all .4s}
#lenSvg .rm rect{fill:#f3dcb8;stroke:#b07a43;stroke-width:1.5}
#lenSvg .rm text{font:600 15px var(--f-t);fill:var(--ink)}
#lenSvg .rm:last-of-type rect{fill:#f0cfa2}
#lenSvg .hoop{stroke:#8d9aa3;stroke-width:5;opacity:.85}
#lenSvg .dim{stroke:var(--ink2);stroke-width:1.2;fill:none}
#lenSvg .dimt{font:500 13px var(--f-t);fill:var(--ink2)}
#lenSvg g{animation:bk-in .35s ease-out}

/* ---------- ошибки: спилы ---------- */
.bk-err{background:linear-gradient(180deg,var(--len),var(--len2))}
.bk-logs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:clamp(8px,1.4vw,20px)}
.bk-log{position:relative;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:14%;
  background:url(/assets/img/spil.webp) center/contain no-repeat;filter:drop-shadow(0 14px 16px rgba(74,48,20,.25));transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.bk-log:hover{transform:rotate(-6deg) translateY(-6px)}
.bk-log__n{position:absolute;top:4%;left:6%;display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:var(--cedar-d);color:#fff;font:700 18px var(--f-h);box-shadow:0 0 0 3px var(--paper)}
.bk-log svg{width:34px;height:34px;fill:none;stroke:var(--cedar-d);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.bk-log::before{content:"";position:absolute;inset:16%;border-radius:50%;background:radial-gradient(closest-side,rgba(255,244,226,.88) 55%,rgba(255,244,226,0));z-index:-1}
.bk-log{isolation:isolate}
.bk-log h3{margin:6px 0 6px;font:700 15px/1.2 var(--f-t);color:var(--ink)}
.bk-log p{margin:0;font-size:13px;line-height:1.35;color:#3e3a34}

/* ---------- FAQ ---------- */
.bk-faq__grid{display:grid;grid-template-columns:1fr 1fr;gap:12px 20px;align-items:start}
.bk-faq details{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:0 20px}
.bk-faq summary{list-style:none;cursor:pointer;padding:16px 30px 16px 0;position:relative;font-weight:600}
.bk-faq summary::-webkit-details-marker{display:none}
.bk-faq summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);font:400 24px var(--f-t);transition:transform .25s}
.bk-faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.bk-faq details p{margin:0 0 16px;font-size:15px;color:var(--ink2)}

/* ---------- подвал ---------- */
.bk-foot{position:relative;margin-top:30px;background:var(--len2)}
.bk-foot__land{display:block;width:100%;height:120px;margin-bottom:-2px}
.bk-foot__land .l3{fill:#c9d3cf}
.bk-foot__land .lake{fill:var(--steam-l)}
.bk-foot__land .l2{fill:#7d927f}
.bk-foot__land .l1{fill:#58705c}
.bk-foot__in{background:#58705c;color:#eef0e8;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px;align-items:center;padding:20px clamp(16px,4vw,64px) 30px}
.bk-foot .bk-logo,.bk-foot .bk-logo small{color:#eef0e8}
.bk-foot .bk-logo__ring{width:46px;height:46px}
.bk-foot .bk-logo__name{font-size:16px}
.bk-foot nav{display:grid;gap:6px}
.bk-foot nav a{color:#eef0e8;text-decoration:none;font-size:15px}
.bk-foot nav a:hover{text-decoration:underline}
.bk-foot p{margin:0;font-size:13px;opacity:.8;text-align:right}

/* ---------- появление ---------- */
.bk-rise{opacity:0;transform:translateY(22px);transition:opacity .7s ease var(--d,0ms),transform .7s cubic-bezier(.2,.7,.2,1) var(--d,0ms)}
.bk-rise.is-seen{opacity:1;transform:none}
.bk-log.bk-rise.is-seen:hover{transform:rotate(-6deg) translateY(-6px)}


/* ================= /uchastok/ ================= */
.bk-hero--plot{min-height:clamp(440px,34vw,560px)}
.bk-hero--plot .bk-hero__text{padding-bottom:50px}
.bk-hero--plot::before{background:linear-gradient(90deg,var(--len) 0,var(--len) 30%,rgba(239,230,214,.85) 42%,rgba(239,230,214,0) 58%)}
.bk-plan__wrap{display:grid;grid-template-columns:1fr 330px;gap:28px;align-items:start}
.bk-plan__fig{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:14px;box-shadow:var(--sh)}
#plot{width:100%;height:auto;display:block;touch-action:none;user-select:none;font-family:var(--f-t)}
.p-out{fill:#f4ede0}.p-nb{fill:#ece4d2}
.p-street{fill:#cfd3d1}.p-street-l{stroke:#fff;stroke-width:3;stroke-dasharray:26 18}
.p-t{font:600 15px var(--f-t);fill:var(--ink2)}.p-t--in{fill:#fff}
.p-lot{fill:#e8efd9}.p-fence{fill:none;stroke:#8a6a45;stroke-width:4;stroke-dasharray:2 5}
.p-house{fill:#5b5752;stroke:#3f3c38;stroke-width:2}.p-house--nb{fill:#8f8a83}
.p-ridge{stroke:#7d7872;stroke-width:2;fill:none}
.p-win{stroke:var(--steam);stroke-width:7;stroke-linecap:round}
.p-bush{fill:#a9c28f;opacity:.8}
.p-zone{fill:url(#hatch);stroke:#e07a5f;stroke-width:1.5;stroke-dasharray:6 5;opacity:.9}
.p-zone--house{fill:rgba(224,122,95,.08)}
#barrel{cursor:grab;outline:none}
#barrel.is-drag{cursor:grabbing}
#barrel:focus-visible .p-barrel{stroke:var(--ink);stroke-width:4}
.p-barrel{fill:#d9a465;stroke:#7a4a22;stroke-width:3;filter:drop-shadow(0 6px 8px rgba(74,48,20,.35));transition:filter .2s}
#barrel:hover .p-barrel,#barrel.is-drag .p-barrel{filter:drop-shadow(0 12px 14px rgba(74,48,20,.45))}
.p-hoops{stroke:#8d9aa3;stroke-width:4}
.p-chim{fill:#9aa3a8;stroke:#5e666b;stroke-width:2}
.p-dim{stroke-width:2;stroke-dasharray:5 4}.p-dim.ok{stroke:#3f7a52}.p-dim.bad{stroke:#c4512f}
.p-dot.ok{fill:#3f7a52}.p-dot.bad{fill:#c4512f}
.p-lab rect{fill:#fff;stroke-width:1.5}.p-lab.ok rect{stroke:#3f7a52}.p-lab.bad rect{stroke:#c4512f}
.p-lab text{font-weight:700;fill:var(--ink)}
.bk-plan__fig figcaption{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;padding:12px 4px 2px;font-size:14px;color:var(--ink2)}
.bk-chip{border:1px solid var(--line);background:var(--len2);border-radius:999px;padding:8px 16px;font:600 14px var(--f-t);color:var(--ink);cursor:pointer}
.bk-chip:hover{background:var(--cedar-l)}
.bk-legend{display:inline-flex;align-items:center;gap:8px}
.bk-legend i{width:22px;height:12px;border-radius:3px}
.bk-legend i.z{background:repeating-linear-gradient(45deg,rgba(224,122,95,.5) 0 3px,transparent 3px 7px);border:1px dashed #e07a5f}
.bk-legend i.w{background:var(--steam)}
.bk-check{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh);position:sticky;top:20px}
.bk-check h3{font-size:19px}
.bk-check__sub{margin:6px 0 10px;font-size:14px;color:var(--ink2)}
.bk-check ul{list-style:none;margin:0;padding:0}
.bk-check li{display:flex;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.bk-check li i{flex:none;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;margin-top:2px;transition:background .25s}
.bk-check li i::after{content:"";width:10px;height:6px;border:solid #fff;border-width:0 0 3px 3px;transform:rotate(-45deg) translate(1px,-1px)}
.bk-check li.is-ok i{background:#3f7a52}
.bk-check li.is-warn i{background:#d39a2c}
.bk-check li.is-bad i{background:#c4512f}
.bk-check li.is-bad i::after{width:12px;height:3px;border:0;background:#fff;transform:none}
.bk-check b{display:block;font-size:16px}
.bk-check span{font-size:15px}
.bk-check em{font-style:normal;color:var(--ink2);font-size:13px;margin-left:4px}
.bk-check small{display:block;margin-top:3px;font-size:13px;color:#a8432a}
.bk-check li.is-warn small{color:#8a6312}
.bk-check__note{margin:12px 0 0;padding:12px 14px;border-radius:12px;background:var(--steam-l);font-size:13px;line-height:1.45}

.bk-rules{background:var(--len2);border-block:1px solid var(--line)}
.bk-rules__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.bk-rules__list li{display:flex;flex-direction:column;gap:12px}
.bk-rules__list b{display:grid;place-items:center;width:84px;height:84px;border-radius:50%;font:700 22px var(--f-h);color:var(--cedar-d);
  background:repeating-radial-gradient(circle,#f6e3c6 0 5px,#eed2a8 5px 7px);box-shadow:inset 0 0 0 3px #c48a4e}
.bk-rules__list li:last-child b{font-size:16px}
.bk-rules__list h3{font:700 16px/1.25 var(--f-t)}
.bk-rules__list p{margin:6px 0 0;font-size:14px;line-height:1.5;color:var(--ink2)}

.bk-base__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.bk-base figure{margin:0;background:var(--paper);border:1px solid var(--line);border-radius:var(--r-card);padding:16px;transition:transform .3s,box-shadow .3s}
.bk-base figure:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.bk-base svg{width:100%;height:auto;background:linear-gradient(#f7efe2 70%,#e9dcc5 70%);border-radius:14px}
.bk-base .bb{fill:#d9a465;stroke:#7a4a22;stroke-width:2.5}
.bk-base .lg{fill:#b98149;stroke:#6b4a27;stroke-width:1.5}
.bk-base .bl{fill:#b9b4ab;stroke:#6f6a63;stroke-width:1.5}
.bk-base .sd{fill:#d8c7a2;stroke:#a89068;stroke-width:1;stroke-dasharray:3 3}
.bk-base .gr{stroke:#6f8a5e;stroke-width:3}
.bk-base .pl{stroke:#3b3b3b;stroke-width:5}.bk-base .pl.t{stroke-width:2;fill:none}
.bk-base h3{margin:14px 0 4px;font:700 16px var(--f-t);color:var(--cedar-d)}
.bk-base figcaption p{margin:0;font-size:14px;color:var(--ink2);line-height:1.5}
.bk-base .is-over{opacity:.72}
.bk-base .is-over h3::after{content:"избыточно";margin-left:8px;padding:2px 8px;border-radius:999px;background:#f3d6cc;color:#a8432a;font-size:11px;vertical-align:middle}

.bk-drain__fig{margin:0}
.bk-drain__fig svg{width:100%;height:auto;font-family:var(--f-t)}
.bk-drain .soil{fill:#d9c09a}.bk-drain .grass{stroke:#6f8a5e;stroke-width:6}
.bk-drain .bar{fill:#d9a465;stroke:#7a4a22;stroke-width:3}
.bk-drain .hoopd{stroke:#8d9aa3;stroke-width:5}
.bk-drain .lgd{fill:#b98149}
.bk-drain .pipe{fill:none;stroke:#8d969b;stroke-width:12;stroke-linecap:round;stroke-linejoin:round}
.bk-drain .trap{fill:#5e666b}
.bk-drain .well path{fill:#b9ab95;stroke:#7a6f60;stroke-width:2}.bk-drain .well .stones{stroke:#8f8372;stroke-dasharray:8 6;fill:none}
.bk-drain .cap{fill:#9aa3a8}
.bk-drain .drop{fill:var(--steam)}
.bk-drain .lbl path{stroke:var(--ink2);stroke-width:1.2}
.bk-drain .lbl text{font:600 16px var(--f-t);fill:var(--ink)}.bk-drain .lbl text.s{font-weight:500;font-size:14px;fill:var(--ink2)}
.bk-drain__notes{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;font-size:15px}
.bk-drain__notes li{padding-left:16px;border-left:3px solid var(--steam)}

.bk-truck{display:grid;grid-template-columns:1fr 1.05fr;gap:36px;align-items:center;background:var(--len2);border-block:1px solid var(--line)}
.bk-todo{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:t}
.bk-todo label{display:flex;gap:14px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:12px 16px;cursor:pointer;transition:background .2s}
.bk-todo input{appearance:none;-webkit-appearance:none;flex:none;width:30px;height:30px;margin:0;border-radius:50%;background:var(--cedar-d);display:grid;place-items:center;cursor:pointer;counter-increment:t}
.bk-todo input::before{content:counter(t);color:#fff;font:700 14px var(--f-h)}
.bk-todo input:checked{background:#3f7a52}
.bk-todo input:checked::before{content:"";width:10px;height:6px;border:solid #fff;border-width:0 0 3px 3px;transform:rotate(-45deg) translate(1px,-1px)}
.bk-todo input:focus-visible{outline:3px solid var(--cedar);outline-offset:2px}
.bk-todo label:has(input:checked){background:#eef3e6}
.bk-todo span{font-size:14px;color:var(--ink2);line-height:1.45}
.bk-todo b{display:block;font-size:16px;color:var(--ink)}
.bk-todo__count{margin:12px 0 0;font-weight:600;color:var(--cedar-d)}
.bk-truck__photo img{width:100%;height:auto;border-radius:var(--r-card);box-shadow:var(--sh)}
.bk-back{margin:22px 0 0}.bk-back a{font-weight:600;text-decoration:none;border-bottom:1px solid currentColor}

@media (max-width:1100px){
  .bk-plan__wrap{grid-template-columns:1fr}.bk-check{position:static}
  .bk-rules__list{grid-template-columns:repeat(2,1fr)}
  .bk-base__grid{grid-template-columns:repeat(2,1fr)}
  .bk-truck{grid-template-columns:1fr}
}
@media (max-width:760px){
  .bk-plan__fig{padding:6px;margin-inline:-8px}
  .p-t{font-size:30px}
  .bk-rules__list,.bk-base__grid,.bk-drain__notes{grid-template-columns:1fr}
  .bk-rules__list li{flex-direction:row;align-items:flex-start}
  .bk-rules__list b{flex:none;width:64px;height:64px;font-size:18px}
  .bk-drain__fig{overflow-x:auto;margin-inline:-16px;padding-inline:16px}
  .bk-drain__fig svg{min-width:640px}
}

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

/* ---------- планшет и телефон ---------- */
@media (max-width:1100px){
  .bk-cut__wrap{grid-template-columns:1fr}
  .bk-card{max-width:560px}
  .bk-logs{grid-template-columns:repeat(3,1fr)}
  .bk-len{grid-template-columns:1fr}
}
@media (max-width:760px){
  body{font-size:16px}
  .bk-top{position:relative;flex-direction:column;gap:6px;padding-top:14px;background:var(--len)}
  .bk-tags{margin:0;gap:10px;flex-wrap:wrap}
  .bk-tag{padding-top:18px}.bk-tag::before,.bk-tag::after{height:22px}
  .bk-tag span{padding:9px 14px;font-size:14px}
  .bk-hero{aspect-ratio:auto;min-height:0;max-height:none;display:flex;flex-direction:column-reverse}
  .bk-hero__photo{position:relative;height:auto;width:100%;aspect-ratio:4/3;overflow:hidden}
  .bk-hero::before{display:none}
  .bk-hero__photo img{position:static;width:100%;height:100%;object-fit:cover;object-position:88% center}
  .bk-steam{display:none}
  .bk-hero__photo::before{content:"";position:absolute;inset:0 0 auto;height:60px;z-index:1;background:linear-gradient(var(--len),transparent)}
  .bk-hero__text{padding:18px 16px 0}
  .bk-lead{font-size:17px;margin:16px 0 20px}
  section{padding:40px 16px}
  .bk-pin{width:32px;height:32px;font-size:14px;border-width:2px}
  .bk-vs__cols{grid-template-columns:1fr;gap:28px}
  .bk-vs__col,.bk-vs__col:first-child{padding:0}
  .bk-vs__col+.bk-vs__col{border-left:0;border-top:1px dashed var(--line);padding-top:24px}
  .bk-logs{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:6px;margin:0 -16px;padding:8px 16px 18px;scrollbar-width:none}
  .bk-logs::-webkit-scrollbar{display:none}
  .bk-log{flex:0 0 270px;scroll-snap-align:center}
  .bk-log p{font-size:13px}
  .bk-log h3{font-size:15px}
  #lenSvg .rm text{font-size:24px}
  .bk-faq__grid{grid-template-columns:1fr}
  .bk-foot__in{grid-template-columns:1fr}
  .bk-foot p{text-align:left}
}

/* подпись разработчика: ссылка цветом текста подвала, иначе на зелёном не видна */
.bk-foot [data-sign] a{color:inherit;text-decoration:underline;text-underline-offset:2px}