:root{
  --bg:#F3F5F9; --surface:#FFFFFF; --surface-2:#F8FAFD; --ink:#0F172A; --ink-2:#475569; --ink-3:#94A3B8;
  --line:#E2E8F0; --line-2:#CBD5E1;
  --volt:#FFC43D; --volt-ink:#7A4D00; --volt-soft:#FFF4D6;
  --phase:#2457F5; --phase-soft:#E6ECFF; --copper:#C2703E; --copper-soft:#FBEADF;
  --ok:#16A34A; --ok-soft:#DCFCE7; --warn:#D97706; --warn-soft:#FEF3C7; --bad:#DC2626; --bad-soft:#FEE2E2;
  --r:16px; --r-s:10px; --shadow:0 1px 2px rgba(15,23,42,.06),0 8px 24px -12px rgba(15,23,42,.18);
  --font:'Inter',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif; --head:'Manrope','Inter',system-ui,sans-serif;
}
*{box-sizing:border-box} html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 var(--font);min-height:100dvh;display:flex;flex-direction:column}
a{color:var(--phase)} button{font:inherit} h1,h2,h3,h4{font-family:var(--head);letter-spacing:-.01em;margin:0 0 .4em}
.hidden{display:none!important}
.hide-sm{display:inline}
@media(max-width:720px){.hide-sm{display:none}}

/* ─ header ─ */
.top{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:16px;padding:10px 20px;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.brand span{display:flex;flex-direction:column;line-height:1.05}
.brand b{font-family:var(--head);font-size:19px;letter-spacing:.08em}
.brand small{color:var(--ink-3);font-size:11px}
.rail{display:flex;gap:4px;flex:1;overflow-x:auto;scrollbar-width:none;padding:2px}
.rail::-webkit-scrollbar{display:none}
.step{display:flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;border:1px solid transparent;background:transparent;color:var(--ink-2);cursor:pointer;white-space:nowrap;font-weight:500;min-height:38px}
.step i{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--line);font-style:normal;font-size:12px;font-weight:700;color:var(--ink-2)}
.step.done i{background:var(--ok);color:#fff}
.step.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.step.active i{background:var(--volt);color:var(--volt-ink)}
.step:disabled{opacity:.45;cursor:not-allowed}
.top-actions{display:flex;gap:6px}

/* ─ buttons ─ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:9px 14px;min-height:40px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;font-weight:600;transition:transform .08s,box-shadow .15s,background .15s}
.btn:hover{box-shadow:var(--shadow)} .btn:active{transform:translateY(1px)}
.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.volt{background:var(--volt);color:var(--volt-ink);border-color:var(--volt)}
.btn.ghost{background:transparent;border-color:transparent} .btn.ghost:hover{background:var(--surface-2)}
.btn.big{padding:14px 22px;font-size:16px;border-radius:14px}
.btn.sm{padding:5px 10px;min-height:32px;font-size:13px;border-radius:9px}
.btn.danger{color:var(--bad)}
.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}

/* ─ hero ─ */
.hero{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center;max-width:1180px;margin:0 auto;padding:56px 24px 40px}
.eyebrow{color:var(--copper);font-weight:700;font-size:12px;letter-spacing:.12em;text-transform:uppercase;margin:0 0 12px}
.hero h1{font-size:clamp(30px,4.2vw,50px);line-height:1.08;font-weight:800;margin-bottom:16px}
.hero h1 em{font-style:normal;background:linear-gradient(transparent 62%,var(--volt) 62%)}
.lead{font-size:17px;color:var(--ink-2);max-width:60ch}
.hero-cta{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0}
.hero-points{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;color:var(--ink-2);font-size:14px}
.hero-art{background:var(--surface);border-radius:24px;box-shadow:var(--shadow);padding:14px;border:1px solid var(--line)}
.hero-art svg{width:100%;height:auto;display:block}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding-top:28px}.hero-points{grid-template-columns:1fr}}

/* ─ how ─ */
.how{max-width:1180px;margin:0 auto;padding:10px 24px 50px}
.how h2{font-size:28px;font-weight:800}
.how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:16px 0 28px}
.how-grid div{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--shadow)}
.how-grid i{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--volt);color:var(--volt-ink);font-style:normal;font-weight:800;font-family:var(--head);margin-bottom:8px}
.how-grid b{display:block;font-family:var(--head);font-size:16px;margin-bottom:4px}
.how-grid p{margin:0;color:var(--ink-2);font-size:13px}
.rules{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px 22px;box-shadow:var(--shadow)}
.rules h3{font-size:18px} .rules ul{margin:0 0 10px;padding-left:20px;color:var(--ink-2)} .rules li{margin:4px 0}
.rules .muted{color:var(--ink-3);font-size:13px;margin:0}

/* ─ work layout ─ */
.work{display:grid;grid-template-columns:380px 1fr;gap:16px;padding:16px 20px;max-width:1500px;margin:0 auto;width:100%;flex:1;align-items:start}
.side{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:18px;position:sticky;top:70px;max-height:calc(100dvh - 86px);overflow:auto}
.side h2{font-size:22px;font-weight:800} .side .sub{color:var(--ink-2);margin:0 0 14px}
.stage{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;position:sticky;top:70px}
.stage-bar{display:flex;gap:6px;align-items:center;padding:8px 10px;border-bottom:1px solid var(--line);flex-wrap:wrap;min-height:52px;background:var(--surface-2)}
.stage-bar .sep{width:1px;height:24px;background:var(--line-2);margin:0 4px}
.canvas-wrap{position:relative;height:calc(100dvh - 150px);min-height:460px;background:#FBFCFE;background-image:radial-gradient(var(--line-2) 1px,transparent 1px);background-size:20px 20px}
#plan{width:100%;height:100%;display:block;touch-action:none;outline:none;cursor:default}
.canvas-hint{position:absolute;left:12px;bottom:12px;background:rgba(15,23,42,.88);color:#fff;padding:8px 12px;border-radius:10px;font-size:13px;pointer-events:none;max-width:70%}
.canvas-hint:empty{display:none}
.wide{grid-column:1/-1;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px}
@media(max-width:980px){
  .work{grid-template-columns:1fr;padding:10px}
  .side{position:static;max-height:none;order:2}
  .stage{position:static;order:1}
  .canvas-wrap{height:62dvh;min-height:380px}
}

/* ─ side content ─ */
.card{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-s);padding:12px;margin:10px 0}
.card.volt{background:var(--volt-soft);border-color:#F5D27A}
.card.ok{background:var(--ok-soft);border-color:#A7F3C4}
.card.warn{background:var(--warn-soft);border-color:#FCD34D}
.card.bad{background:var(--bad-soft);border-color:#FCA5A5}
.card h3{font-size:14px;margin:0 0 6px}
label.f{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin:10px 0 4px}
input[type=text],input[type=number],select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line-2);border-radius:10px;background:#fff;font:inherit;color:var(--ink);min-height:40px}
input:focus,select:focus,textarea:focus{outline:2px solid var(--phase);outline-offset:1px;border-color:var(--phase)}
.choices{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.choice{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:12px;border:2px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;text-align:left;min-height:44px}
.choice:hover{border-color:var(--line-2)}
.choice.on{border-color:var(--ink);background:var(--volt-soft)}
.choice b{font-size:14px} .choice small{color:var(--ink-2);font-size:12px}
.choice .ico{font-size:22px}
.palette{display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:8px}
.pal{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 6px;border:2px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;font-size:12px;font-weight:600;text-align:center;min-height:72px;justify-content:center}
.pal .ico{font-size:24px;line-height:1}
.pal.on{border-color:var(--phase);background:var(--phase-soft)}
.pal:hover{border-color:var(--line-2)}
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;align-items:center;gap:8px;padding:8px 0;border-bottom:1px solid var(--line)}
.list li:last-child{border-bottom:0}
.list .grow{flex:1;min-width:0}
.list .muted{color:var(--ink-3);font-size:12px}
.swatch{width:12px;height:12px;border-radius:3px;flex:none}
.chip{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:999px;background:var(--line);font-size:12px;font-weight:600;color:var(--ink-2)}
.chip.ok{background:var(--ok-soft);color:#166534} .chip.warn{background:var(--warn-soft);color:#92400E} .chip.bad{background:var(--bad-soft);color:#991B1B} .chip.phase{background:var(--phase-soft);color:#1E3A8A}
.kpi{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:10px 0}
.kpi div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.kpi b{display:block;font-size:20px;font-family:var(--head)} .kpi small{color:var(--ink-2)}
.steps-nav{display:flex;justify-content:space-between;gap:8px;margin-top:16px;padding-top:12px;border-top:1px solid var(--line)}
.tip{font-size:13px;color:var(--ink-2);background:var(--phase-soft);border-radius:10px;padding:8px 10px;margin:8px 0}
.progress{height:6px;background:var(--line);border-radius:3px;overflow:hidden;margin:8px 0}
.progress i{display:block;height:100%;background:var(--volt)}

/* ─ plan svg ─ */
.room{fill:#FFFFFF;stroke:#0F172A;stroke-width:3;cursor:move}
.room.sel{stroke:var(--phase);stroke-width:4;fill:#F3F6FF}
.room.wet{fill:#EEF7FB}
.room-label{font:600 13px var(--font);fill:var(--ink);pointer-events:none}
.room-dim{font:11px var(--font);fill:var(--ink-3);pointer-events:none}
.pt{cursor:grab} .pt.sel .pt-ring{stroke:var(--phase);stroke-width:3}
.pt-ring{fill:#fff;stroke:var(--ink);stroke-width:2}
.pt-ico{font-size:14px;pointer-events:none;user-select:none}
.pt-label{font:600 10px var(--font);fill:var(--ink-2);pointer-events:none}
.route{fill:none;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;opacity:.85}
.route.dim{opacity:.18}
.handle{fill:#fff;stroke:var(--phase);stroke-width:2;cursor:nwse-resize}
.ghost-room{fill:rgba(36,87,245,.08);stroke:var(--phase);stroke-dasharray:6 4;stroke-width:2}

/* ─ market ─ */
.mk-grid{display:grid;grid-template-columns:1fr 340px;gap:20px}
@media(max-width:980px){.mk-grid{grid-template-columns:1fr}}
.mk-section{margin-bottom:22px}
.mk-section h3{font-size:16px;display:flex;align-items:center;gap:8px;margin-bottom:8px}
.need{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:start;border:1px solid var(--line);border-radius:12px;padding:12px;margin-bottom:10px;background:#fff}
.need .q{font-family:var(--head);font-weight:800;font-size:18px;white-space:nowrap}
.need .why{color:var(--ink-3);font-size:12px}
.offers{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px;margin-top:8px;grid-column:1/-1}
.offer{display:flex;flex-direction:column;gap:6px;border:2px solid var(--line);border-radius:12px;padding:10px;background:#fff;cursor:pointer;text-align:left}
.offer.on{border-color:var(--ok);background:var(--ok-soft)}
.offer:hover{border-color:var(--line-2)}
.offer .nm{font-size:13px;line-height:1.3;min-height:34px}
.offer .pr{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.offer .pr b{font-family:var(--head);font-size:17px}
.shop-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;color:#fff;letter-spacing:.02em}
.shop-tag i{width:7px;height:7px;border-radius:50%;background:#fff;opacity:.9;font-style:normal}
.offer a{font-size:12px}
.cart{position:sticky;top:80px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r);padding:16px}
.cart h3{font-size:18px}
.cart .tot{font-family:var(--head);font-size:30px;font-weight:800}
.cart .by-shop{margin:10px 0;font-size:13px}
.cart .by-shop div{display:flex;justify-content:space-between;padding:4px 0;border-bottom:1px dashed var(--line)}
.cart-list{max-height:40dvh;overflow:auto;font-size:13px;margin-top:8px}
.cart-list div{display:flex;justify-content:space-between;gap:8px;padding:5px 0;border-bottom:1px solid var(--line)}
.cart-list span:last-child{white-space:nowrap;font-weight:600}
.approx{font-size:11px;color:var(--ink-3)}

/* ─ project / print ─ */
.doc{max-width:900px;margin:0 auto}
.doc h1{font-size:30px} .doc h2{font-size:20px;margin-top:28px;padding-top:12px;border-top:2px solid var(--ink)}
.doc table{width:100%;border-collapse:collapse;font-size:13px}
.doc th,.doc td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.doc th{background:var(--surface-2);font-weight:700}
.doc .num{text-align:right;white-space:nowrap}
.doc .fig{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;margin:12px 0}
.doc .fig svg{width:100%;height:auto;display:block}
.doc .step{display:block;border:0;background:var(--surface-2);border-radius:12px;padding:12px 14px;margin:10px 0;white-space:pre-wrap;cursor:default}
.doc .step b{display:block;font-family:var(--head);font-size:15px;margin-bottom:4px}
.doc .disclaimer{background:var(--warn-soft);border-radius:12px;padding:12px 14px;font-size:13px}
.doc .export-bar{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 20px}
.oneline{font:11px var(--font)}

/* ─ misc ─ */
.foot{padding:24px 20px;color:var(--ink-3);font-size:12px;text-align:center;max-width:900px;margin:0 auto}
.toast{position:fixed;left:50%;bottom:22px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:10px 16px;border-radius:12px;opacity:0;pointer-events:none;transition:.2s;z-index:50;max-width:90vw}
.toast.on{opacity:1;transform:translateX(-50%)}
dialog{border:0;border-radius:18px;padding:22px;max-width:520px;width:92vw;box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(15,23,42,.45);backdrop-filter:blur(3px)}
.mono{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px}
.sr{position:absolute;left:-9999px}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}
@media print{
  .top,.side,.stage,.foot,.export-bar,.hero,.toast{display:none!important}
  body{background:#fff;font-size:12px} .work{display:block;padding:0} .wide{border:0;box-shadow:none;padding:0}
  .doc h2{break-after:avoid} .doc .fig,.doc .step{break-inside:avoid}
}

/* ─ сцена: сегменти, стени, 3D ─ */
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:10px;overflow:hidden;background:#fff}
.seg button{border:0;background:transparent;padding:6px 12px;min-height:32px;font-weight:600;color:var(--ink-2);cursor:pointer;font-size:13px}
.seg button.on{background:var(--ink);color:#fff}
.stage-bar .note{font-size:12px;color:var(--ink-3)}
.walls-view{height:calc(100dvh - 150px);min-height:460px;overflow:auto;background:#FBFCFE}
.walls-head{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:12px 16px 4px;font-size:13px}
.walls-head select{width:auto;display:inline-block;min-height:34px;padding:4px 8px;margin-left:6px}
.walls-head .legend{color:var(--ink-2);display:inline-flex;gap:6px;align-items:center}
.walls-head i.hz{display:inline-block;width:18px;height:12px;background:repeating-linear-gradient(45deg,transparent 0 3px,#F59E0B 3px 4px);border:1px solid #F59E0B;border-radius:2px}
.walls-head i.run{display:inline-block;width:18px;height:4px;border-radius:2px}
.walls-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(380px,1fr));gap:12px;padding:8px 16px 16px}
.wall-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px;overflow:auto}
.wall-card svg{max-width:100%;height:auto;display:block}
.view3d{position:relative;height:calc(100dvh - 150px);min-height:460px;background:#F6F8FC}
.view3d-bar{position:absolute;top:8px;left:8px;right:8px;z-index:2;display:flex;gap:8px;align-items:center;flex-wrap:wrap;pointer-events:none}
.view3d-bar>*{pointer-events:auto}
.view3d-bar .opac{display:inline-flex;align-items:center;gap:6px;font-size:12px;background:#fff;border:1px solid var(--line-2);border-radius:10px;padding:4px 10px;min-height:32px}
.view3d-bar .opac input{width:90px}
.view3d-canvas{position:absolute;inset:0}
.view3d-canvas canvas{width:100%!important;height:100%!important;display:block}
.walk-pad{position:absolute;right:14px;bottom:14px;z-index:2;display:grid;grid-template-columns:repeat(3,52px);gap:6px}
.walk-pad button{width:52px;height:48px;border-radius:12px;border:1px solid var(--line-2);background:rgba(255,255,255,.92);font-size:18px;cursor:pointer;touch-action:none;user-select:none}
.walk-pad button:active{background:var(--volt)}
.furn-label{font:600 10px var(--font);fill:#334155;pointer-events:none;user-select:none}
.furn{cursor:grab}
@media(max-width:980px){.walls-view,.view3d{height:62dvh;min-height:380px}.walls-grid{grid-template-columns:1fr}}

/* ─ паспорт ─ */
.passport-room{break-inside:avoid;margin:16px 0}
.passport-room h3{font-size:16px;margin:0 0 6px}
.passport-walls{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.passport-walls .wall-card svg{width:100%;height:auto}
.doc.only-passport > *:not(.passport):not(.export-bar):not(h1):not(.eyebrow){display:none}
@media print{.passport-walls{grid-template-columns:1fr 1fr}.wall-card{border:1px solid #ccc}.doc.only-passport .export-bar{display:none}}

/* ─ страници ─ */
.nav{display:flex;gap:4px}
.nav a{padding:7px 12px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-weight:600;font-size:14px}
.nav a:hover{background:var(--surface-2);color:var(--ink)}
#nav-home{display:none}
.pagemain{flex:1}
.wrap{max-width:1100px;margin:0 auto;padding:36px 24px 50px}
.wrap.narrow{max-width:760px}
.wrap h1{font-size:clamp(26px,3.4vw,40px);font-weight:800;margin-bottom:10px}
.wrap h2{font-size:22px;margin-top:28px}
.doc-text p,.doc-text li{color:var(--ink-2);line-height:1.6}
.doc-text h2{font-size:18px;margin-top:24px}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 18px}
.seg a{display:inline-block;padding:6px 12px;color:var(--ink-2);text-decoration:none;font-weight:600;font-size:13px}
.seg a.on{background:var(--ink);color:#fff}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:14px}
.cards.small{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.pcard{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);overflow:hidden;color:var(--ink);text-decoration:none}
.pcard:hover{border-color:var(--line-2)}
.pcard .thumb{aspect-ratio:4/3;background:#FBFCFE;border-bottom:1px solid var(--line);display:grid;place-items:center;overflow:hidden}
.pcard .thumb svg{width:100%;height:100%;object-fit:contain}
.pcard .nothumb{color:var(--ink-3);font-size:12px;padding:12px;text-align:center}
.pcard .meta{display:flex;flex-direction:column;gap:3px;padding:10px 12px;font-size:13px}
.pcard .meta b{font-size:15px;font-family:var(--head)}
.fig.big{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:12px;margin:0 0 20px}
.fig.big svg{width:100%;height:auto;display:block;max-height:70dvh}
table.plain{width:100%;border-collapse:collapse;font-size:14px}
table.plain th,table.plain td{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}
table.plain .num{text-align:right}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:18px 0}
.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column}
.plan.hot{border:2px solid var(--volt);background:linear-gradient(180deg,var(--volt-soft),#fff 40%)}
.plan h3{font-size:20px;margin:0}
.plan .price{font-family:var(--head);font-size:40px;font-weight:800;line-height:1.1;margin:6px 0 2px}
.plan .price small{font-size:16px;color:var(--ink-2);font-weight:600}
.plan ul{padding-left:18px;color:var(--ink-2);font-size:14px;flex:1}
.plan li{margin:5px 0}
.plan form{display:inline}
.demo-bar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;background:var(--volt-soft);border:1px solid #F5D27A;border-radius:10px;padding:8px 12px;font-size:13px;margin-bottom:10px}
.lock{opacity:.75}
.doc.nobrand .brand-line{display:none}
.export-bar label.btn input{margin:0}
dialog h3{margin-top:0}