.calc-section{background:#1C0D08;padding:90px 0;color:#F5EDE0;position:relative;overflow:hidden;font-family:'Outfit',sans-serif}
.calc-section::before{content:'';position:absolute;inset:0;opacity:.04;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 512 512'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");background-size:220px;pointer-events:none}
.calc-section *{box-sizing:border-box}
.calc-section > .ct{position:relative;z-index:1}
.calc-eye{font-size:.62rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:#D4AA38;margin-bottom:14px;display:block}
.calc-title{font-family:'Cormorant Garamond',serif;font-weight:700;font-size:clamp(1.9rem,3.6vw,2.9rem);line-height:1.05;color:#F5EDE0;margin-bottom:12px}
.calc-sub{font-size:.96rem;line-height:1.7;color:rgba(245,237,224,.55);max-width:600px}
.calc-note{margin-top:14px;padding:14px 18px;background:rgba(196,154,40,.06);border-left:3px solid #C49A28;font-size:.78rem;line-height:1.65;color:rgba(245,237,224,.65);max-width:760px}
.calc-modes{display:flex;gap:6px;margin:36px 0 24px;border:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.3);padding:5px;width:fit-content}
.calc-mode-btn{padding:11px 22px;background:transparent;border:none;cursor:pointer;color:rgba(245,237,224,.5);font-size:.74rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-family:inherit;transition:all .18s}
.calc-mode-btn:hover{color:#F5EDE0}
.calc-mode-btn.is-active{background:#C49A28;color:#fff}
.calc-panel{background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);padding:34px;display:none}
.calc-panel.is-active{display:block}
.calc-h4{font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#D4AA38;margin-bottom:14px;display:block}
/* Mode 1: ambient cards */
.calc-amb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px;margin-bottom:22px}
.calc-amb{padding:16px 18px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.07);cursor:pointer;text-align:left;transition:all .18s;color:#F5EDE0;font-family:inherit}
.calc-amb:hover{background:rgba(196,154,40,.06);border-color:rgba(196,154,40,.3)}
.calc-amb.is-active{background:#B44020;border-color:#B44020;color:#fff}
.calc-amb-name{font-family:'Cormorant Garamond',serif;font-size:1.15rem;font-weight:700;line-height:1;margin-bottom:4px;display:block}
.calc-amb-area{font-size:.72rem;font-weight:600;letter-spacing:.06em;color:#D4AA38;margin-bottom:6px;display:block}
.calc-amb.is-active .calc-amb-area{color:#fff}
.calc-amb-desc{font-size:.74rem;line-height:1.5;color:rgba(245,237,224,.5);display:block}
.calc-amb.is-active .calc-amb-desc{color:rgba(255,255,255,.85)}
/* Mode 2: form */
.calc-mode-toggle{display:flex;gap:0;border:1px solid rgba(255,255,255,.08);width:fit-content;margin-bottom:24px}
.calc-mt-btn{padding:10px 18px;background:transparent;border:none;cursor:pointer;color:rgba(245,237,224,.55);font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-family:inherit;transition:all .15s}
.calc-mt-btn:hover{color:#F5EDE0}
.calc-mt-btn.is-active{background:#1E7090;color:#fff}
.calc-input-row{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;margin-bottom:10px;align-items:end}
.calc-field{display:flex;flex-direction:column;gap:6px}
.calc-label{font-size:.66rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:rgba(245,237,224,.55)}
.calc-input,.calc-select{padding:11px 14px;background:rgba(0,0,0,.3);border:1px solid rgba(255,255,255,.1);color:#F5EDE0;font-family:inherit;font-size:.88rem;outline:none;transition:border-color .18s;width:100%}
.calc-input:focus,.calc-select:focus{border-color:#C49A28}
.calc-product-note{margin:7px 0 0;font-size:.72rem;line-height:1.55;color:rgba(245,237,224,.68);background:rgba(196,154,40,.08);border-left:2px solid #C49A28;padding:9px 11px}
.calc-mini-btn{padding:11px 14px;background:transparent;border:1px solid rgba(255,255,255,.15);color:rgba(245,237,224,.7);font-family:inherit;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:all .15s;white-space:nowrap}
.calc-mini-btn:hover{background:rgba(180,64,32,.18);border-color:#B44020;color:#fff}
.calc-add-btn{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px dashed rgba(196,154,40,.4);color:#D4AA38;padding:11px 18px;font-family:inherit;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;cursor:pointer;margin-bottom:18px;transition:all .15s}
.calc-add-btn:hover{background:rgba(196,154,40,.08);border-style:solid;border-color:#C49A28}
.calc-area-display{font-size:.84rem;color:rgba(245,237,224,.65);margin-bottom:10px}
.calc-area-display strong{color:#D4AA38;font-weight:700}
.calc-checkbox{display:flex;align-items:center;gap:10px;font-size:.84rem;color:rgba(245,237,224,.7);cursor:pointer;margin:14px 0}
.calc-checkbox input{width:18px;height:18px;accent-color:#C49A28;cursor:pointer}
.calc-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.calc-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.calc-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;font-family:inherit;font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;border:none;cursor:pointer;transition:all .18s;text-decoration:none;white-space:nowrap}
.calc-btn-primary{background:#C49A28;color:#fff;box-shadow:0 4px 14px rgba(196,154,40,.3)}
.calc-btn-primary:hover{background:#D4AA38;transform:translateY(-2px)}
.calc-btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.15);color:rgba(245,237,224,.7)}
.calc-btn-ghost:hover{color:#F5EDE0;border-color:#F5EDE0}
.calc-btn-wpp{background:#25D366;color:#fff;box-shadow:0 4px 14px rgba(37,211,102,.3)}
.calc-btn-wpp:hover{background:#1DA851;transform:translateY(-2px)}
/* Result */
.calc-result{margin-top:34px;background:rgba(0,0,0,.4);border:1px solid rgba(196,154,40,.22);border-left:3px solid #C49A28;padding:32px 30px;display:none}
.calc-result.is-shown{display:block;animation:calcRise .3s ease-out}
@keyframes calcRise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.calc-result-eye{font-size:.6rem;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:#D4AA38;margin-bottom:10px;display:block}
.calc-result-h{font-family:'Cormorant Garamond',serif;font-weight:700;font-size:clamp(1.4rem,2.4vw,1.9rem);color:#F5EDE0;line-height:1.15;margin-bottom:18px}
.calc-result-h strong{color:#D4AA38}
.calc-result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);margin-bottom:18px}
.calc-result-cell{background:rgba(0,0,0,.4);padding:14px 16px}
.calc-result-cell-k{font-size:.58rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:rgba(245,237,224,.4);margin-bottom:5px;display:block}
.calc-result-cell-v{font-family:'Cormorant Garamond',serif;font-size:1.18rem;font-weight:700;color:#F5EDE0;line-height:1}
.calc-result-pkg{padding:14px 18px;background:rgba(196,154,40,.06);border-left:2px solid #C49A28;font-size:.86rem;line-height:1.6;color:rgba(245,237,224,.85);margin-bottom:14px}
.calc-result-pkg strong{color:#D4AA38}
.calc-result-warn{font-size:.76rem;line-height:1.65;color:rgba(245,237,224,.5);margin-bottom:18px;font-style:italic}
.calc-error{padding:14px 18px;background:rgba(180,64,32,.12);border-left:2px solid #B44020;color:rgba(255,200,180,.92);font-size:.84rem;margin-top:14px}
@media(max-width:760px){
  .calc-input-row{grid-template-columns:1fr 1fr}
  .calc-input-row .calc-mini-btn{grid-column:1/-1}
  .calc-grid-2{grid-template-columns:1fr}
  .calc-panel{padding:24px 20px}
  .calc-section{padding:60px 0}
}