:root{
  --bg:#f6f8fb;--panel:#fff;--ink:#17202a;--muted:#667085;--line:#e5e7eb;
  --brand:#1d4ed8;--brand-2:#0f766e;--brand-dark:#15305f;--accent:#c58a3a;
  --shadow:0 16px 40px rgba(16,24,40,.08);--radius:20px;--radius-sm:12px;
  --max:1180px;--header:76px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,select,textarea{font:inherit}button{cursor:pointer}.container{width:min(var(--max),calc(100% - 32px));margin-inline:auto}.skip{position:absolute;left:-9999px;top:auto}.skip:focus{left:16px;top:16px;z-index:9999;padding:10px 14px;background:#fff;border-radius:10px;box-shadow:var(--shadow)}
.header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,231,235,.8)}.nav{min-height:var(--header);display:flex;align-items:center;gap:20px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.02em}.brand svg{width:34px;height:34px;flex:none}.brand span{font-size:1.05rem}.navlinks{display:flex;align-items:center;gap:5px;margin-left:auto}.navlinks>a,.navdrop>button{padding:10px 12px;border-radius:10px;color:#344054;font-weight:600;background:transparent;border:0}.navlinks>a:hover,.navdrop>button:hover{background:#f2f4f7;color:var(--ink)}.navdrop{position:relative}.navdrop-menu{display:none;position:absolute;right:0;top:46px;width:290px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;padding:8px}.navdrop:hover .navdrop-menu,.navdrop:focus-within .navdrop-menu{display:block}.navdrop-menu a{display:block;padding:11px 12px;border-radius:10px}.navdrop-menu a:hover{background:#f7f8fa}.nav-actions{display:flex;gap:8px;align-items:center}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;padding:9px 11px;border-radius:11px}.lang-toggle{border:1px solid var(--line);background:#fff;padding:9px 11px;border-radius:11px;font-weight:700}
.hero{padding:76px 0 58px;background:radial-gradient(circle at 80% 10%,rgba(29,78,216,.10),transparent 32%),radial-gradient(circle at 10% 60%,rgba(15,118,110,.08),transparent 26%),linear-gradient(180deg,#fff 0,#f6f8fb 100%)}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:48px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border-radius:999px;background:#eef4ff;color:#1849a9;font-size:.82rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.hero h1{font-size:clamp(2.6rem,6vw,5rem);line-height:1.02;letter-spacing:-.055em;margin:18px 0 18px;max-width:760px}.hero h1 span{color:var(--brand)}.hero p{font-size:1.08rem;color:#475467;max-width:680px;margin:0}.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 16px;border-radius:12px;border:1px solid transparent;font-weight:800;transition:.18s ease}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 18px rgba(29,78,216,.22)}.btn-primary:hover{transform:translateY(-1px);background:#1b46c2}.btn-secondary{background:#fff;border-color:#d0d5dd;color:#344054}.btn-secondary:hover{background:#f8fafc}.btn-ghost{background:transparent;color:#344054}.hero-visual{position:relative}.hero-card{background:#fff;border:1px solid rgba(229,231,235,.85);border-radius:28px;padding:20px;box-shadow:var(--shadow);overflow:hidden}.hero-card .stone-board{min-height:420px;border-radius:20px;background:linear-gradient(135deg,#2f3238 0%,#55555a 28%,#1e232b 55%,#b08b63 90%);position:relative;isolation:isolate}.hero-card .stone-board:before,.hero-card .stone-board:after{content:"";position:absolute;inset:-15%;background:repeating-linear-gradient(145deg,transparent 0 65px,rgba(255,255,255,.09) 65px 67px,transparent 67px 145px);transform:rotate(-8deg);z-index:-1}.hero-card .stone-board:after{background:radial-gradient(circle at 20% 15%,rgba(255,255,255,.18),transparent 10%),radial-gradient(circle at 75% 65%,rgba(255,255,255,.13),transparent 12%);z-index:0}.hero-badge{position:absolute;left:22px;bottom:22px;background:rgba(11,18,32,.86);color:#fff;border:1px solid rgba(255,255,255,.16);padding:13px 14px;border-radius:14px;max-width:280px}.hero-badge strong{display:block;font-size:1rem}.hero-badge small{display:block;color:#d0d5dd;margin-top:3px}
.section{padding:78px 0}.section-tight{padding:52px 0}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;margin-bottom:26px}.section-head h2{margin:0;font-size:clamp(1.8rem,3.2vw,2.8rem);letter-spacing:-.04em;line-height:1.1}.section-head p{margin:0;color:var(--muted);max-width:660px}.grid{display:grid;gap:20px}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 8px 28px rgba(16,24,40,.04)}.card h3{margin:0 0 9px;font-size:1.12rem;letter-spacing:-.02em}.card p{margin:0;color:#667085}.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:#eef4ff;color:var(--brand);font-weight:900;margin-bottom:16px}.muted{color:var(--muted)}.small{font-size:.86rem}.tag{display:inline-flex;padding:6px 9px;border-radius:999px;background:#f2f4f7;color:#475467;font-size:.78rem;font-weight:750}.chips{display:flex;flex-wrap:wrap;gap:7px}
.stone-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.material{padding:0;overflow:hidden}.material-art{height:185px;position:relative}.material-art.granite{background:radial-gradient(circle at 18% 24%,rgba(255,255,255,.24),transparent 4%),radial-gradient(circle at 68% 66%,rgba(255,255,255,.13),transparent 6%),linear-gradient(135deg,#38383b,#0f1720)}.material-art.marble{background:linear-gradient(140deg,#f9fafb,#d8dee7 48%,#f7f8fa);position:relative}.material-art.marble:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(143deg,transparent 0 48px,rgba(79,92,113,.18) 50px,transparent 53px 120px)}.material-art.kota{background:linear-gradient(135deg,#7a765f,#b7ad89 40%,#817c67);}.material-art.quartz{background:radial-gradient(circle at 24% 30%,rgba(255,255,255,.7),transparent 2%),radial-gradient(circle at 75% 60%,rgba(255,255,255,.5),transparent 3%),linear-gradient(145deg,#ecedf0,#c7cbd2)}.material-body{padding:18px}.material-body h3{margin-bottom:6px}.material-body .micro{font-size:.82rem;color:#98a2b3;margin-top:10px}
.proof{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:stretch}.proof-panel{background:var(--brand-dark);color:#fff;border-radius:24px;padding:28px}.proof-panel h3{margin:0 0 12px;font-size:1.7rem}.proof-panel p{color:#d7e1f4;margin:0}.proof-list{display:grid;gap:10px;margin-top:20px}.proof-item{display:flex;gap:12px;align-items:flex-start}.proof-item .check{width:25px;height:25px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.12);flex:none}.proof-item strong{display:block}.proof-item span{color:#d0d9e9;font-size:.9rem}.quote-card{background:#fff;border:1px solid var(--line);border-radius:24px;padding:28px}.quote-card blockquote{margin:0;font-size:1.2rem;line-height:1.5;color:#344054}.quote-card cite{display:block;margin-top:18px;color:#667085;font-style:normal;font-size:.9rem}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.tool-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px;min-height:210px}.tool-card .tool-top{display:flex;gap:12px;align-items:center}.tool-card .tool-icon{width:40px;height:40px;border-radius:12px;background:#eef4ff;color:var(--brand);display:grid;place-items:center;font-weight:900}.tool-card h3{margin:0}.tool-card p{margin:0;color:var(--muted);font-size:.92rem}.tool-card .tool-link{margin-top:auto;font-weight:800;color:var(--brand)}
.calc-shell{display:grid;grid-template-columns:.88fr 1.12fr;gap:22px}.calc-panel,.calc-result{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px}.calc-panel h2,.calc-result h2{margin:0 0 10px}.field{display:grid;gap:7px;margin-top:16px}.field label{font-weight:750;color:#344054;font-size:.91rem}.input-wrap{display:grid;grid-template-columns:1fr auto}.input-wrap input,.field select,.field textarea,.field input{width:100%;border:1px solid #d0d5dd;background:#fff;border-radius:11px;padding:11px 12px;outline:none}.input-wrap input:focus,.field select:focus,.field textarea:focus,.field input:focus{border-color:#84adff;box-shadow:0 0 0 4px rgba(29,78,216,.1)}.input-suffix{display:flex;align-items:center;padding:0 11px;border:1px solid #d0d5dd;border-left:0;border-radius:0 11px 11px 0;background:#f8fafc;color:#667085}.input-wrap input{border-radius:11px 0 0 11px}.result-total{font-size:clamp(2.1rem,4vw,3.5rem);font-weight:900;letter-spacing:-.05em;margin:15px 0}.result-table{display:grid;gap:8px;margin-top:18px}.result-row{display:flex;justify-content:space-between;gap:18px;padding:9px 0;border-bottom:1px dashed #e4e7ec}.result-row:last-child{border-bottom:0}.notice{padding:13px 15px;border:1px solid #bfd3ff;background:#f3f7ff;color:#24427c;border-radius:12px;font-size:.9rem}.warning{padding:13px 15px;border:1px solid #f1d0a7;background:#fff8ec;color:#7a4f11;border-radius:12px;font-size:.9rem}.formula{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;padding:12px 14px;border-radius:10px;background:#111827;color:#e5e7eb;font-size:.86rem;overflow:auto}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:30px}.article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px}.article h1{font-size:clamp(2.1rem,4.4vw,3.5rem);line-height:1.08;letter-spacing:-.045em;margin:12px 0}.article .lead{font-size:1.12rem;color:#667085}.article h2{margin-top:34px;font-size:1.65rem;line-height:1.2}.article h3{margin-top:24px;font-size:1.2rem}.article p{color:#344054}.article ul,.article ol{padding-left:23px;color:#344054}.article li{margin:7px 0}.article blockquote{border-left:4px solid var(--brand);padding:8px 16px;margin:18px 0;background:#f7f9fc;color:#475467}.article table{width:100%;border-collapse:collapse;margin:18px 0}.article th,.article td{border:1px solid #e4e7ec;padding:10px;text-align:left}.article th{background:#f8fafc}.article img{border-radius:16px;border:1px solid var(--line)}.article .callout{margin:18px 0;padding:17px 18px;border-radius:14px;background:#eef7f5;border:1px solid #b9dfd7}.article .cta-box{margin:24px 0;padding:20px;background:#f3f7ff;border:1px solid #c8d8ff;border-radius:16px}.aside{display:grid;gap:16px;align-content:start}.aside .sticky{position:sticky;top:98px}.toc a{display:block;padding:7px 0;color:#475467}.toc a:hover{color:var(--brand)}
.breadcrumbs{display:flex;flex-wrap:wrap;gap:7px;align-items:center;font-size:.86rem;color:#667085;margin-bottom:18px}.breadcrumbs a{color:#475467}.breadcrumbs .sep{color:#98a2b3}.page-hero{padding:52px 0 28px;background:#fff;border-bottom:1px solid var(--line)}.page-hero h1{font-size:clamp(2.2rem,4.5vw,4rem);line-height:1.05;letter-spacing:-.045em;margin:0 0 13px}.page-hero p{max-width:780px;color:#667085;margin:0;font-size:1.05rem}.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:24px}.stat{background:#fff;border:1px solid var(--line);padding:17px;border-radius:16px}.stat strong{display:block;font-size:1.6rem}.stat span{color:#667085;font-size:.86rem}
.price-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.price-table th,.price-table td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}.price-table th{background:#f8fafc}.price-pill{font-weight:850}.live-dot{display:inline-flex;align-items:center;gap:7px;color:#0f766e;font-weight:800}.live-dot:before{content:"";width:8px;height:8px;border-radius:50%;background:#14b87a;box-shadow:0 0 0 5px rgba(20,184,122,.12)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.form-full{grid-column:1/-1}.consent{display:flex;gap:9px;align-items:flex-start;font-size:.86rem;color:#667085}.consent input{margin-top:4px}.status{padding:11px 13px;border-radius:11px;display:none}.status.show{display:block}.status.ok{background:#ecfdf3;border:1px solid #abefc6;color:#067647}.status.err{background:#fef3f2;border:1px solid #fecdca;color:#b42318}
.gallery-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.gallery-card{border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff}.gallery-art{aspect-ratio:4/3;display:grid;place-items:end;padding:16px}.gallery-art .caption{background:rgba(15,23,42,.82);color:#fff;padding:9px 12px;border-radius:11px;font-size:.88rem}.gallery-a{background:linear-gradient(140deg,#c2aa8a,#56483d 45%,#d7c5aa)}.gallery-b{background:linear-gradient(120deg,#d9dde2,#8f969f 50%,#e7e9eb)}.gallery-c{background:linear-gradient(145deg,#b99d73,#5a4a39 48%,#cfc2ab)}
.footer{padding:55px 0 30px;background:#101828;color:#d0d5dd;margin-top:76px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:28px}.footer h3,.footer h4{color:#fff;margin:0 0 11px}.footer p{margin:0;color:#98a2b3}.footer a{color:#d0d5dd}.footer a:hover{color:#fff}.footer-links{display:grid;gap:7px}.footer-bottom{border-top:1px solid #24324a;margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;gap:18px;font-size:.84rem;color:#98a2b3}.social-row{display:flex;gap:8px;margin-top:14px}.social{width:34px;height:34px;display:grid;place-items:center;border:1px solid #344054;border-radius:9px}
.cookie{position:fixed;left:18px;right:18px;bottom:18px;z-index:2500;display:none;background:#101828;color:#f8fafc;border:1px solid #344054;border-radius:18px;padding:16px 18px;box-shadow:0 20px 60px rgba(0,0,0,.25)}.cookie.show{display:flex;justify-content:space-between;align-items:center;gap:18px}.cookie p{margin:0;color:#d0d5dd;font-size:.86rem}.cookie-actions{display:flex;gap:8px;flex:none}.cookie-actions button{padding:9px 12px;border-radius:10px;border:1px solid #475467;background:transparent;color:#fff}.cookie-actions .accept{background:#fff;color:#101828;border-color:#fff}
.mobile-drawer{display:none}.empty{padding:28px;border:1px dashed #cfd5dc;border-radius:18px;background:#fff;text-align:center;color:#667085}.ad-slot{min-height:110px;border:1px dashed #d0d5dd;border-radius:15px;display:flex;align-items:center;justify-content:center;color:#98a2b3;background:#fcfcfd;font-size:.8rem}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.admin-wrap{min-height:100vh;background:#0b1220}.admin-shell{width:min(1200px,calc(100% - 30px));margin:auto;padding:26px 0}.admin-card{background:#fff;border-radius:22px;padding:24px;border:1px solid #e4e7ec}.admin-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.admin-tabs{display:flex;gap:7px;flex-wrap:wrap;margin:12px 0 20px}.admin-tabs button{border:1px solid #d0d5dd;background:#fff;padding:9px 12px;border-radius:10px;font-weight:750}.admin-tabs button.active{background:#172b4d;color:#fff;border-color:#172b4d}.admin-pane{display:none}.admin-pane.active{display:block}.admin-table{width:100%;border-collapse:collapse}.admin-table th,.admin-table td{border-bottom:1px solid #e4e7ec;padding:11px;text-align:left;vertical-align:top}.editor{display:grid;grid-template-columns:1fr 1fr;gap:14px}.editor textarea{min-height:520px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.preview{border:1px solid #d0d5dd;border-radius:12px;padding:18px;min-height:520px;overflow:auto;background:#fbfcfe}.toolbar{display:flex;flex-wrap:wrap;gap:6px;margin:9px 0}.toolbar button{border:1px solid #d0d5dd;background:#fff;padding:6px 8px;border-radius:8px;font-weight:700;font-size:.82rem}

html[data-theme="dark"]{--bg:#0b1220;--panel:#111827;--ink:#f8fafc;--muted:#98a2b3;--line:#25324a;--brand:#7ea7ff;--brand-2:#44c9b9;--brand-dark:#122343;--accent:#e0a85b;--shadow:0 18px 48px rgba(0,0,0,.24)}html[data-theme="dark"] .header{background:rgba(11,18,32,.88);border-color:#25324a}html[data-theme="dark"] .navlinks>a,html[data-theme="dark"] .navdrop>button{color:#d0d5dd}html[data-theme="dark"] .navdrop-menu,html[data-theme="dark"] .btn-secondary,html[data-theme="dark"] .lang-toggle,html[data-theme="dark"] .menu-toggle,html[data-theme="dark"] .card,html[data-theme="dark"] .tool-card,html[data-theme="dark"] .calc-panel,html[data-theme="dark"] .calc-result,html[data-theme="dark"] .article,html[data-theme="dark"] .quote-card,html[data-theme="dark"] .admin-card{background:#111827;color:#f8fafc;border-color:#25324a}html[data-theme="dark"] .hero{background:radial-gradient(circle at 80% 10%,rgba(29,78,216,.18),transparent 32%),radial-gradient(circle at 10% 60%,rgba(15,118,110,.13),transparent 26%),linear-gradient(180deg,#0f1728 0,#0b1220 100%)}html[data-theme="dark"] .page-hero{background:#0f1728;border-color:#25324a}html[data-theme="dark"] p,html[data-theme="dark"] .section-head p,html[data-theme="dark"] .card p,html[data-theme="dark"] .tool-card p,html[data-theme="dark"] .article p,html[data-theme="dark"] .article li,html[data-theme="dark"] .hero p{color:#b7c0cf}html[data-theme="dark"] .field input,html[data-theme="dark"] .field select,html[data-theme="dark"] .field textarea,html[data-theme="dark"] .input-suffix{background:#0b1220;color:#f8fafc;border-color:#344054}html[data-theme="dark"] .btn-secondary{color:#f8fafc}html[data-theme="dark"] .price-table th,html[data-theme="dark"] .admin-table th{background:#182235}html[data-theme="dark"] .price-table td,html[data-theme="dark"] .price-table th,html[data-theme="dark"] .admin-table td,html[data-theme="dark"] .admin-table th{border-color:#25324a}html[data-theme="dark"] .empty,html[data-theme="dark"] .ad-slot{background:#0f1728;border-color:#344054;color:#98a2b3}html[data-theme="dark"] .notice{background:#10203f;color:#d5e2ff;border-color:#345aa8}html[data-theme="dark"] .warning{background:#2b2113;color:#efd1a2;border-color:#725522}html[data-theme="dark"] .preview{background:#0b1220;border-color:#344054}
@media (max-width:980px){.navlinks{display:none}.menu-toggle{display:block}.nav-actions{margin-left:auto}.hero-grid,.calc-shell,.proof,.article-layout{grid-template-columns:1fr}.stone-grid,.grid-4,.tool-grid,.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}.mobile-drawer{position:fixed;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:14px 16px;z-index:990}.mobile-drawer.open{display:block}.mobile-drawer a{display:block;padding:12px;border-radius:10px}.mobile-drawer a:hover{background:#f2f4f7}.navdrop-menu{position:static;width:auto;border:0;box-shadow:none;display:block!important}.navdrop-menu a{padding-left:24px}.navdrop>button{display:none}}
@media (max-width:640px){.container{width:min(var(--max),calc(100% - 22px))}.hero{padding:44px 0}.section{padding:56px 0}.stone-grid,.grid-3,.grid-4,.tool-grid,.gallery-grid,.footer-grid,.stat-row,.form-grid{grid-template-columns:1fr}.form-full{grid-column:auto}.hero-card .stone-board{min-height:290px}.article{padding:20px}.footer-bottom{flex-direction:column}.cookie.show{align-items:flex-start;flex-direction:column}.cookie-actions{width:100%}.cookie-actions button{flex:1}.editor{grid-template-columns:1fr}.nav .brand span{font-size:.98rem}}