:root{--ink:#12131a;--muted:#616575;--panel:#191b27;--purple:#7655e8;--pink:#ff3eb5;--line:#e7e8ef;--soft:#f6f5fb;--white:#fff;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;background:#fff;color:var(--ink);line-height:1.65}a{color:#5b3cc4}a:hover{color:#c32188}img{max-width:100%;height:auto}.wrap{width:min(var(--max),calc(100% - 36px));margin:auto}.site-header{position:sticky;top:0;z-index:50;background:rgba(14,15,22,.96);backdrop-filter:blur(10px);border-bottom:3px solid var(--pink)}.nav{min-height:74px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:800;letter-spacing:.2px}.brand img{width:48px;height:48px;object-fit:contain}.navlinks{margin-left:auto;display:flex;gap:22px;align-items:center}.navlinks a{color:#fff;text-decoration:none;font-weight:650;font-size:.95rem}.navlinks a:hover{color:#ff78cc}.nav-toggle{display:none;margin-left:auto;background:#252735;border:1px solid #424557;color:#fff;border-radius:10px;padding:9px 12px;font-size:1.2rem}.hero{background:radial-gradient(circle at 80% 20%,rgba(255,62,181,.22),transparent 28%),linear-gradient(135deg,#10111a,#211b36);color:#fff;padding:82px 0 70px}.eyebrow{display:inline-flex;border:1px solid rgba(255,255,255,.24);border-radius:999px;padding:6px 12px;font-size:.82rem;font-weight:750;letter-spacing:.05em;text-transform:uppercase;color:#ffd8ef}.hero h1{font-size:clamp(2.4rem,6vw,5rem);line-height:1.02;max-width:900px;margin:18px 0}.hero p{font-size:1.16rem;max-width:760px;color:#d9d9e3}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:10px;padding:12px 18px;text-decoration:none;font-weight:800}.btn-primary{background:linear-gradient(90deg,var(--purple),var(--pink));color:#fff}.btn-secondary{border:1px solid #696c7c;color:#fff;background:#1f2130}.section{padding:64px 0}.section.alt{background:var(--soft)}.section h2{font-size:clamp(1.8rem,3vw,2.7rem);line-height:1.15;margin:0 0 16px}.lead{font-size:1.12rem;color:#4c5060;max-width:820px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}.card{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 28px rgba(23,23,35,.06)}.card img{width:100%;aspect-ratio:16/9;object-fit:cover}.card-body{padding:22px}.card h3{margin:0 0 8px;font-size:1.24rem;line-height:1.25}.card p{color:var(--muted);margin:0 0 14px}.textlink{font-weight:800;text-decoration:none}.article-shell{padding:48px 0 72px}.article{max-width:820px;margin:auto}.article .meta{color:var(--muted);font-size:.92rem;margin:8px 0 28px}.article h1{font-size:clamp(2.2rem,5vw,4rem);line-height:1.08;margin:.3em 0}.article h2{font-size:1.8rem;line-height:1.25;margin-top:2em}.article h3{font-size:1.3rem;margin-top:1.7em}.article p,.article li{font-size:1.05rem}.article img{border-radius:16px;margin:14px 0 24px}.toc,.note,.ad-slot{border-radius:14px;padding:20px;margin:28px 0}.toc{background:#f5f2ff;border:1px solid #ded7ff}.note{background:#fff8fc;border-left:4px solid var(--pink)}.ad-slot{border:1px dashed #c8cad4;background:#fafafa;text-align:center;color:#777b89;font-size:.84rem;min-height:120px;display:flex;align-items:center;justify-content:center}.table-wrap{overflow:auto}.compare{width:100%;border-collapse:collapse;margin:22px 0}.compare th,.compare td{border:1px solid #dadce5;padding:12px;text-align:left}.compare th{background:#f4f3f8}.faq details{border-top:1px solid var(--line);padding:16px 0}.faq summary{font-weight:800;cursor:pointer}.site-footer{background:#11121a;color:#d4d5df;padding:44px 0 26px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.site-footer h3{color:#fff}.site-footer a{color:#f3c9e5;text-decoration:none}.small{font-size:.9rem;color:#9699a9}.crumbs{font-size:.88rem;color:#747887;margin-bottom:18px}.trust{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px}.trust div{background:#fff;border:1px solid var(--line);padding:18px;border-radius:12px}.checklist li{margin-bottom:8px}.callout{background:#171925;color:#fff;border-radius:18px;padding:30px}.callout p{color:#d1d2dc}.pill{display:inline-block;background:#ede8ff;color:#5139a8;border-radius:999px;padding:4px 9px;font-size:.78rem;font-weight:800}.article .legacy-shell .container-fluid:first-child,.article .legacy-shell nav,.article .legacy-shell .navbar,.article .legacy-shell footer{display:none!important}
@media(max-width:860px){.grid,.trust,.footer-grid{grid-template-columns:1fr}.navlinks{display:none;position:absolute;left:0;right:0;top:74px;background:#151722;padding:18px 24px;flex-direction:column;align-items:flex-start}.navlinks.open{display:flex}.nav-toggle{display:block}.hero{padding:58px 0}.section{padding:48px 0}.article-shell{padding-top:34px}}

/* blueprint diagram upgrade */
.compare th,.compare td{color:#171923!important;background:#fff!important}.compare th{background:#f1eff6!important;color:#252735!important;font-weight:800}.compare tr:nth-child(even) td{background:#fbfbfd!important}.compare td:first-child{font-weight:750;color:#322c48!important}.blueprint-figure{margin:28px 0 34px;border:1px solid #d8e0eb;border-radius:16px;background:#fbfdff;overflow:hidden;box-shadow:0 10px 26px rgba(31,63,111,.07)}.blueprint-figure img{display:block;width:100%;margin:0!important;border-radius:0!important}.blueprint-figure figcaption{padding:13px 16px;background:#f5f8fc;color:#4d5c70;font-size:.92rem;border-top:1px solid #d8e0eb}.diagram-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0 34px}.diagram-card{border:1px solid #d8e0eb;border-radius:14px;overflow:hidden;background:#fbfdff}.diagram-card img{display:block;width:100%;margin:0!important;border-radius:0!important}.diagram-card .caption{padding:12px 14px;color:#4d5c70;font-size:.9rem}.blueprint-kicker{color:#2457a6;font-size:.8rem;font-weight:850;letter-spacing:.08em;text-transform:uppercase}.compare{font-size:.98rem}@media(max-width:700px){.diagram-grid{grid-template-columns:1fr}.compare{min-width:650px}}


/* studio acoustic planner */
.planner-hero{background:radial-gradient(circle at 82% 18%,rgba(255,62,181,.23),transparent 27%),linear-gradient(135deg,#0f1119,#211934);color:#fff;padding:64px 0 52px}.planner-hero h1{font-size:clamp(2.35rem,5vw,4.55rem);line-height:1.04;margin:14px 0;max-width:900px}.planner-hero p{max-width:800px;color:#d9dbe6;font-size:1.12rem}.tool-shell{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,.9fr);gap:28px;align-items:start}.planner-card,.result-card{background:#fff;border:1px solid #e2e4ec;border-radius:18px;box-shadow:0 12px 32px rgba(18,20,35,.07)}.planner-card{padding:26px}.planner-card h2,.planner-card h3{margin-top:0}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label,.group-label{font-weight:800;font-size:.93rem;color:#252735}.field input,.field select{width:100%;border:1px solid #cfd2dc;border-radius:10px;padding:11px 12px;background:#fff;color:#171923;font:inherit}.field input:focus,.field select:focus{outline:3px solid rgba(118,85,232,.16);border-color:#7655e8}.unit-row{display:grid;grid-template-columns:1fr 1fr 1fr 130px;gap:12px}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.check{display:flex;align-items:flex-start;gap:9px;border:1px solid #e3e4eb;border-radius:11px;padding:11px;background:#fbfbfd}.check input{margin-top:4px;accent-color:#7655e8}.tool-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}.tool-btn{border:0;border-radius:11px;padding:12px 17px;font:inherit;font-weight:850;cursor:pointer}.tool-btn.primary{background:linear-gradient(90deg,#7655e8,#ff3eb5);color:#fff}.tool-btn.ghost{background:#f0eef8;color:#372a70}.result-wrap{position:sticky;top:94px}.result-card{overflow:hidden}.result-head{padding:24px;background:linear-gradient(135deg,#171925,#26203a);color:#fff;border-bottom:3px solid #ff3eb5}.result-head h2{margin:4px 0 7px}.result-head p{margin:0;color:#d5d6e1}.result-body{padding:24px}.empty-result{color:#6d7180;text-align:center;padding:34px 15px}.score-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 22px}.score{background:#f7f6fb;border:1px solid #e4e1f2;border-radius:12px;padding:12px}.score strong{display:block;font-size:1.15rem;color:#201934}.score span{font-size:.78rem;color:#6a6e7c;text-transform:uppercase;letter-spacing:.04em}.recommendation{border:1px solid #e5e6ed;border-radius:13px;padding:14px 15px;margin:10px 0;background:#fff}.recommendation.high{border-left:5px solid #ff3eb5}.recommendation.medium{border-left:5px solid #7655e8}.recommendation.low{border-left:5px solid #b5b8c5}.rec-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.priority{font-size:.72rem;border-radius:999px;padding:3px 8px;font-weight:900;letter-spacing:.05em}.high .priority{background:#ffe2f3;color:#982166}.medium .priority{background:#ebe7ff;color:#4933a2}.low .priority{background:#eceef3;color:#626777}.recommendation p{margin:7px 0 0;color:#5c6070;font-size:.93rem}.blueprint{margin-top:20px;border:1px solid #cdd9ec;border-radius:14px;background-color:#fbfdff;background-image:linear-gradient(#e8f0fb 1px,transparent 1px),linear-gradient(90deg,#e8f0fb 1px,transparent 1px);background-size:18px 18px;padding:12px}.blueprint svg{width:100%;height:auto;display:block}.blueprint-note{font-size:.82rem;color:#52657e;margin:8px 3px 0}.modes{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:10px}.mode{background:#f7f9fc;border:1px solid #dde5f0;padding:9px;border-radius:10px;text-align:center}.mode b{display:block;color:#2457a6}.disclaimer{margin-top:22px;padding:14px 16px;border-radius:12px;background:#fff8fc;border-left:4px solid #ff3eb5;color:#555a69;font-size:.9rem}.tool-intro{display:grid;grid-template-columns:1.3fr .7fr;gap:24px;align-items:center;margin-bottom:28px}.mini-blueprint{border:1px solid #d6e0ef;border-radius:14px;background:#fbfdff;padding:12px}.mini-blueprint img{margin:0!important;border-radius:0!important}.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}.why-box{border:1px solid #e2e4ec;border-radius:14px;padding:18px;background:#fff}.why-box h3{margin:0 0 7px}.planner-link-card{background:linear-gradient(135deg,#171925,#29203d);color:#fff;border-radius:18px;padding:30px;display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center}.planner-link-card p{color:#d4d5df;margin-bottom:0}.planner-link-card .btn{white-space:nowrap}.hidden{display:none!important}
@media(max-width:950px){.tool-shell{grid-template-columns:1fr}.result-wrap{position:static}.tool-intro{grid-template-columns:1fr}.why-grid{grid-template-columns:1fr}.planner-link-card{grid-template-columns:1fr}.navlinks{gap:15px}.navlinks a{font-size:.9rem}}
@media(max-width:650px){.form-grid,.check-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.unit-row{grid-template-columns:1fr 1fr}.unit-row .field:last-child{grid-column:1/-1}.score-row,.modes{grid-template-columns:1fr}.planner-card,.result-body{padding:18px}.planner-hero{padding:46px 0 38px}}
@media print{.site-header,.site-footer,.planner-card,.planner-hero .actions,.ad-slot{display:none!important}.tool-shell{display:block}.result-wrap{position:static}.result-card{box-shadow:none}.section{padding:15px 0}}