.calc{max-width:640px;padding-top:clamp(2rem,5vw,3.5rem);padding-bottom:clamp(3rem,7vw,5rem)}.calc__head{text-align:center;margin-bottom:28px}.calc__title{font-size:var(--font-size-2xl);margin:8px 0 6px}.calc__sub{color:var(--color-text-secondary)}.calc__panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:20px;margin-bottom:16px;box-shadow:var(--shadow-card)}.calc__label{display:block;font-size:var(--font-size-xs);font-weight:700;letter-spacing:var(--tracking-label);text-transform:uppercase;color:var(--color-text-secondary);margin-bottom:12px}.calc__chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}.calc__chip{padding:8px 16px;border:1.5px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-surface);color:var(--color-text-primary);cursor:pointer;font-size:var(--font-size-sm);font-weight:600;font-family:inherit;transition:all .15s}.calc__chip.is-active{background:var(--color-accent);border-color:var(--color-accent);color:#1A1A1A}.calc__input{width:100%;padding:11px 14px;font-family:inherit;font-size:var(--font-size-base);color:var(--color-text-primary);background:var(--color-input-bg);border:1.5px solid var(--color-border);border-radius:var(--radius-sm);margin-bottom:10px}.calc__input:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px rgba(200,169,110,.18)}.calc__row{display:flex;gap:10px}.calc__field{flex:1 1}.calc__field small{display:block;font-size:var(--font-size-xs);color:var(--color-text-secondary);margin-bottom:4px}.calc__wall{margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--color-divider)}.calc__wall-head{display:flex;justify-content:space-between;font-size:var(--font-size-xs);color:var(--color-text-secondary);margin-bottom:6px}.calc__remove{font-size:var(--font-size-xs)}.calc__add,.calc__remove{background:none;border:none;color:var(--color-accent-text);cursor:pointer;font-family:inherit}.calc__add{text-decoration:underline;font-size:var(--font-size-sm)}.calc__go{width:100%}.calc__result{margin-top:24px;padding:clamp(1.5rem,4vw,2rem);border-radius:var(--radius-xl);background:linear-gradient(135deg,var(--color-ink) 0,var(--color-copper) 100%);color:var(--color-text-on-dark);text-align:center}.calc__litres{font-family:var(--font-family-display);font-size:3rem;font-weight:800;line-height:1}.calc__summary{font-size:var(--font-size-sm);color:var(--color-text-on-dark-soft);margin:8px 0 16px}.calc__rec{background:rgba(255,255,255,.1);padding:14px;border-radius:var(--radius-sm);margin-bottom:20px}.calc__save{text-align:left;border-top:1px solid rgba(255,255,255,.2);padding-top:20px}.calc__save .calc__label{color:var(--color-text-on-dark-soft)}.calc__email{width:100%;background:#F3F2DC;color:#1A1A1A}.calc__shop{width:100%;margin-top:10px;color:var(--color-text-on-dark);border-color:rgba(255,255,255,.4)}.calc__shop:hover{background:rgba(255,255,255,.1)}.calc__sent{color:var(--color-text-on-dark);font-weight:600;margin-bottom:14px}