.bcu{--ink:#282723;--muted:#77746c;--line:#e5e0d6;--accent:#836b43;font-family:Arial,Helvetica,sans-serif;color:var(--ink);max-width:1240px;margin:24px auto 64px;background:#fcfbf7;border:1px solid var(--line);border-radius:24px;overflow:hidden;font-size:15px;line-height:1.55}.bcu *{box-sizing:border-box}.bcu [hidden]{display:none!important}.bcu h1,.bcu h2,.bcu p{margin-top:0}.bcu h1{font-family:Arial,Helvetica,sans-serif;font-size:clamp(36px,4vw,58px);line-height:1.12;font-weight:600;letter-spacing:-1.5px;margin:30px 0 20px}.bcu h1 em{font-style:normal;color:#95815e;font-weight:400}.bcu h2{font-family:Arial,Helvetica,sans-serif;font-size:29px;line-height:1.2;font-weight:400;margin:8px 0 20px}.bcu-hero{padding:40px 44px 0;background:radial-gradient(ellipse at 95% 10%,#e7ddc9,transparent 58%),#f3f0e7}.bcu-eyebrow,.bcu small{font-size:10px;letter-spacing:2px;font-weight:700}.bcu-private{float:right;padding:6px 12px;border:1px solid #cec4b0;border-radius:20px;font-size:11px}.bcu-hero>p{color:#696458;max-width:650px}.bcu-steps{display:flex;gap:36px;margin-top:32px;padding:20px 0;border-top:1px solid #dcd5c6;font-size:12px;color:var(--muted)}.bcu-steps b{color:var(--ink)}.bcu-layout{display:grid;grid-template-columns:minmax(0,1fr) 295px;gap:36px;padding:36px 40px}.bcu-section-title{display:flex;justify-content:space-between;align-items:center;gap:12px}.bcu-section-title>span{font-size:12px;color:var(--accent);white-space:nowrap}.bcu-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bcu-card{border:1px solid var(--line);padding:16px;border-radius:16px;background:white;min-width:0}.bcu-card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.bcu-card-top>b{font-size:18px}.bcu-card-top>span{font-size:10px;color:var(--muted)}.bcu-drop{position:relative;display:flex;align-items:center;justify-content:center;min-height:245px;background:#f8f7f2;border:1px dashed #c9c4b9;border-radius:10px;cursor:pointer;overflow:hidden}.bcu-drop:focus-within{outline:3px solid #836b43;outline-offset:3px}.bcu-drop input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.bcu-placeholder{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;padding:15px}.bcu-placeholder>span:last-child{font-size:10px;color:var(--muted)}.bcu-hand{font-family:Arial,Helvetica,sans-serif;font-size:48px;color:#af9a74;border:1px solid #d6c9af;border-radius:55px 55px 18px 18px;line-height:1.6;width:80px;margin:8px}.bcu-drop img{width:100%;height:245px;object-fit:contain}.bcu-drop-small{min-height:135px;margin-top:12px}.bcu-drop-small img{height:160px}.bcu-file{display:flex;justify-content:space-between;gap:8px;margin:10px 0;font-size:11px;color:var(--muted)}.bcu-file>span{overflow-wrap:anywhere}.bcu button{font:inherit;cursor:pointer}.bcu-file button{background:none;border:0;color:#974b3e;padding:0}.bcu-hint{font-size:12px;color:var(--muted);margin-bottom:0}.bcu-error{font-size:12px;color:#a5362e;margin:8px 0 0}.bcu-swap{display:block;margin:18px auto 6px;background:transparent;border:1px solid var(--line);border-radius:30px;padding:8px 20px;font-size:12px!important;color:var(--ink)}.bcu-swap+.bcu-hint{text-align:center}.bcu-thumbs{margin-top:25px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.bcu-thumbs summary{cursor:pointer}.bcu-thumbs summary span{display:block;font-size:12px;color:var(--muted);margin:4px 0}.bcu-thumbs>p{font-size:13px;color:var(--muted);margin-top:14px}.bcu-details{margin-top:28px}.bcu-details>label{display:block;font-size:13px;margin:16px 0}.bcu-details>label>span{color:var(--muted)}.bcu-details input,.bcu-details textarea{display:block;width:100%;border:1px solid var(--line);border-radius:8px;padding:12px;margin-top:8px;font:inherit;background:white;color:var(--ink)}.bcu-check{display:flex;align-items:flex-start;gap:10px;font-size:12px;margin:22px 0}.bcu-check input{flex:0 0 auto;margin-top:4px;accent-color:var(--accent)}.bcu-submit-row{display:flex;gap:20px;align-items:center}.bcu-submit{background:#292b26;color:white;border:0;border-radius:9px;padding:15px 24px;flex-shrink:0}.bcu-submit>span{margin-left:16px}.bcu-submit-row p{font-size:11px;color:var(--muted);margin:0}.bcu-response{font-size:14px;margin:20px 0 0;overflow-wrap:anywhere}.bcu-guide{border-left:1px solid var(--line);padding-left:28px}.bcu-guide>p{font-size:13px;color:var(--muted)}.bcu-rule{display:flex;gap:12px;border-top:1px solid var(--line);padding:16px 0}.bcu-rule>span{color:var(--accent)}.bcu-rule b{font-size:13px}.bcu-rule p{font-size:12px;color:var(--muted);margin:5px 0 0}.bcu-note{padding:18px;background:#efece2;border-radius:12px;font-size:12px}.bcu-note p{margin:6px 0 0;color:#6d6658}.bcu-demo{padding:12px 40px;background:#f8eed8;margin:0;font-size:12px}.bcu button:disabled{opacity:.6;cursor:default}.bcu button:focus-visible,.bcu summary:focus-visible{outline:3px solid #836b43;outline-offset:3px}@media(max-width:900px){.bcu-layout{grid-template-columns:1fr}.bcu-guide{border-left:0;border-top:1px solid var(--line);padding:26px 0 0}}@media(max-width:540px){.bcu{margin:12px auto;border-radius:14px}.bcu-hero{padding:26px 20px 0}.bcu-private{float:none;display:table;margin-top:14px}.bcu-layout{padding:24px 18px}.bcu-pair{grid-template-columns:1fr}.bcu-steps{gap:12px;font-size:10px}.bcu-submit-row{align-items:stretch;flex-direction:column}.bcu-section-title{align-items:flex-start}.bcu-demo{padding:12px 20px}}

.bcu-guide-link{color:#655132;font-size:13px;text-decoration:underline;text-underline-offset:4px}.bcu-guide{scroll-margin-top:50px}

.bcu h1,.bcu h2,.bcu button,.bcu input,.bcu textarea,.bcu summary{font-family:Arial,Helvetica,sans-serif}.bcu h2{font-weight:600;letter-spacing:-.6px}.bcu-steps{flex-wrap:wrap}.bcu-submit-row{flex-wrap:wrap}

/* English studio edition: a restrained charcoal and ivory palette. */
.bcu{--ink:#252824;--muted:#706f65;--line:#e4dfd4;--accent:#8a7149;background:#faf9f5;border-radius:12px;box-shadow:0 24px 70px #2827230a}
.bcu-hero{position:relative;padding:44px 44px 0;background:radial-gradient(ellipse at 90% 5%,#414338 0%,transparent 62%),#242923;color:#f5f1e8}
.bcu-eyebrow{font-size:10px;letter-spacing:3px;color:#d2bd95}.bcu-private{color:#d6d5c9;border-color:#656958;background:#ffffff04}
.bcu h1{font-size:clamp(34px,4vw,55px);font-weight:500;line-height:1.13;letter-spacing:-2px;margin:32px 0 20px}.bcu h1 em{color:#c9b58e;font-weight:400}
.bcu-hero>p{font-size:14px;color:#d0d2c7;line-height:1.8;max-width:600px}.bcu-guide-link{color:#d2bd95;font-size:12px}.bcu-steps{border-color:#50564a;color:#9ea595;gap:32px}.bcu-steps b{color:#ede4d3;font-weight:500}
.bcu-demo{background:#eeebe2;color:#76715f;font-size:11px;padding-top:10px;padding-bottom:10px}
.bcu h2{font-size:25px;font-weight:500;letter-spacing:-.7px}.bcu-section-title{margin-bottom:10px}.bcu-section-title small,.bcu-guide>small{color:#8a7149;letter-spacing:2.4px;font-size:9px}
.bcu-card{border-radius:9px;padding:20px;background:#fffefa;box-shadow:0 4px 15px #25282403}.bcu-card-top>b{font-size:16px;font-weight:500}.bcu-card-top>span{font-size:9px;text-transform:uppercase;letter-spacing:1.2px;color:#8a7149}
.bcu-drop{background:radial-gradient(ellipse at 50% 30%,#fffefb,#f1eee5);border:1px solid #e7e1d4;border-radius:5px;min-height:230px}.bcu-drop:hover{border-color:#aa956f}.bcu-hand{font-family:Arial,Helvetica,sans-serif;font-size:42px;font-weight:300;color:#a18b65;width:68px;line-height:1.8;border-color:#d5c8af}.bcu-placeholder strong{font-size:13px;font-weight:500}.bcu-placeholder>span:last-child{font-size:10px}.bcu-hint{font-size:11px;line-height:1.8}.bcu-file{margin:14px 0}
.bcu-swap{font-size:11px!important;letter-spacing:.2px;border-radius:5px}.bcu-thumbs{padding:18px 0}.bcu-thumbs summary b{font-size:13px;font-weight:500}.bcu-thumbs summary span{font-size:11px}.bcu-submit{border-radius:5px;background:#283027;font-size:13px!important;padding:16px 26px;letter-spacing:.3px}.bcu-details input,.bcu-details textarea{border-radius:5px;background:#fffefa}.bcu-rule b{font-weight:500}.bcu-note{border-radius:5px;background:#efeade}
@media(max-width:540px){.bcu-hero{padding:28px 22px 0}.bcu h1{letter-spacing:-1.2px}.bcu-steps{gap:15px}.bcu-card{padding:18px}.bcu-layout{padding:28px 20px}.bcu h2{font-size:23px}}

.bcu-price-options{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0}.bcu-price-options button{border:1px solid #d7cbb5;background:#f3efe5;color:#4e452f;border-radius:5px;padding:10px;font-size:12px}