.main-container{max-width:1000px;margin:0 auto;padding:40px 20px}.page-title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);margin:0 0 .5rem;font-size:clamp(1.6rem,4vw,2.4rem)}.page-subtitle{color:var(--calc-text-faded);margin:0 0 2rem;line-height:1.5}.action-bar{flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;display:flex}.action-btn{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);color:var(--calc-text-primary);cursor:pointer;padding:.5rem .9rem;font-size:.85rem;transition:border-color .15s,background .15s}.action-btn:hover{border-color:var(--calc-cyan)}.action-btn--reset{margin-left:auto}.result-card,.viz-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);margin-bottom:1.25rem;padding:1.25rem 1.5rem}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-faded);margin:0 0 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.15s}.tab-btn:hover{color:var(--calc-text-primary);border-color:var(--calc-cyan)}.tab-btn.active{background:var(--calc-cyan);border-color:var(--calc-cyan);color:#04141a}.tab-panel[hidden]{display:none}.form-group{flex-direction:column;gap:.4rem;margin-bottom:1.1rem;display:flex}.form-group:last-child{margin-bottom:0}.form-group label{color:var(--calc-text-faded);justify-content:space-between;align-items:center;gap:.5rem;font-size:.9rem;display:flex}.form-group input,.form-group select.glass-select{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:var(--calc-radius-md);color:var(--calc-text-primary);font-family:var(--calc-font-mono);padding:.65rem .85rem;font-size:1.05rem}.form-group input:focus,.form-group select.glass-select:focus{border-color:var(--calc-cyan);outline:none}.input-hint{color:var(--calc-text-dim);font-size:.8rem}.form-row{grid-template-columns:1fr 1fr;gap:1rem;display:grid}@media (width<=560px){.form-row{grid-template-columns:1fr}}.range-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);font-weight:600}.form-group input[type=range]{-webkit-appearance:none;appearance:none;background:0 0;border:none;padding:.4rem 0}.form-group input[type=range]::-webkit-slider-runnable-track{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:999px;height:6px}.form-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;background:var(--calc-cyan);border:2px solid var(--calc-bg-card);cursor:pointer;border-radius:50%;width:18px;height:18px;margin-top:-7px}.form-group input[type=range]::-moz-range-track{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:999px;height:6px}.form-group input[type=range]::-moz-range-thumb{background:var(--calc-cyan);border:2px solid var(--calc-bg-card);cursor:pointer;border-radius:50%;width:18px;height:18px}.detail-grid{flex-direction:column;gap:.6rem;margin-bottom:1.25rem;display:flex}.detail-row{border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);justify-content:space-between;gap:.75rem;padding:.6rem .75rem;font-size:.9rem;display:flex}.detail-row--source{border-color:var(--calc-cyan);box-shadow:0 0 0 1px var(--calc-cyan) inset}.detail-label{color:var(--calc-text-faded)}.detail-value{color:var(--calc-text-primary);font-family:var(--calc-font-mono);font-weight:600}.detail-empty{color:var(--calc-text-faded);font-size:.9rem}.table-scroll{overflow-x:auto}.scaled-table{border-collapse:collapse;width:100%;font-size:.85rem}.scaled-table th{text-align:left;color:var(--calc-text-dim);text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--calc-border-default);padding:.5rem .6rem;font-size:.7rem}.scaled-table td{color:var(--calc-text-primary);font-family:var(--calc-font-mono);border-bottom:1px solid var(--calc-border-default);padding:.5rem .6rem}.scaled-table tr:last-child td{border-bottom:none}.page-sections-outer{max-width:1600px;margin:0 auto;padding:0 1.5rem 3rem}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--calc-text-primary);user-select:none;justify-content:space-between;align-items:center;padding:14px 4px;font-size:.9rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item__question::-webkit-details-marker{display:none}.faq-item__question:after{content:"+";font-family:var(--calc-font-mono);color:var(--calc-text-dim);flex-shrink:0;margin-left:16px;font-size:1.1rem;transition:color .2s}.faq-item[open] .faq-item__question:after{content:"−";color:var(--calc-cyan)}.faq-item__question:hover{color:var(--calc-cyan)}.faq-item__answer{color:var(--calc-text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}.preset-bar{flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1.25rem;display:flex}.preset-label{color:var(--calc-text-dim);font-size:.85rem;font-weight:600}.preset-chip{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);color:var(--calc-text-faded);cursor:pointer;padding:.35rem .75rem;font-size:.8rem;transition:all .15s ease-in-out}.preset-chip:hover{border-color:var(--calc-cyan);color:var(--calc-text-primary)}.preset-chip.active{border-color:var(--calc-cyan);color:var(--calc-cyan);background:#0891b226;font-weight:600}.salinity-gauge-wrapper{border-top:1px solid var(--calc-border-default);margin-top:1rem;padding-top:.9rem}.gauge-header{justify-content:space-between;align-items:center;margin-bottom:.4rem;font-size:.8rem;display:flex}.gauge-title{color:var(--calc-text-dim);text-transform:uppercase;letter-spacing:.04em}.gauge-status{color:var(--calc-cyan);font-weight:600}.salinity-gauge-bar{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:999px;height:8px;overflow:hidden}.gauge-fill{background:linear-gradient(90deg, #38bdf8 0%, var(--calc-cyan) 50%, #f59e0b 80%, #ef4444 100%);border-radius:999px;height:100%;transition:width .3s}.gauge-ticks{color:var(--calc-text-dim);justify-content:space-between;margin-top:.3rem;font-size:.7rem;display:flex}@media (width<=768px){.action-btn{flex:calc(50% - .5rem);min-height:44px}.action-btn--reset{margin-left:0}.main-container{padding:24px 14px}.result-card,.viz-card{padding:1rem}.tab-btn{text-align:center;flex:auto}.preset-bar{gap:.35rem}.preset-chip{text-align:center;flex:auto}}@media print{.glass-navbar,.preset-bar,.action-bar,.tab-control,.foot,.calc-back-to-top{display:none!important}.main-container{max-width:100%;padding:0}.tab-panel{display:block!important}.result-card,.viz-card{box-shadow:none!important;color:#000!important;background:#fff!important;border:1px solid #ccc!important}}[data-theme=light] .result-card,[data-theme=light] .viz-card{background:var(--calc-bg-card);border-color:var(--calc-border-default);box-shadow:0 1px 4px #0000000f}[data-theme=light] .form-group input,[data-theme=light] .form-group select.glass-select{background:var(--calc-bg-input);border-color:var(--calc-border-strong);color:var(--calc-text-primary)}[data-theme=light] .form-group input[type=range]{background:0 0}[data-theme=light] .form-group input[type=range]::-webkit-slider-runnable-track,[data-theme=light] .form-group input[type=range]::-moz-range-track{background:var(--calc-bg-input);border-color:var(--calc-border-strong)}[data-theme=light] .form-group input[type=range]::-webkit-slider-thumb,[data-theme=light] .form-group input[type=range]::-moz-range-thumb{background:var(--calc-cyan);border-color:var(--calc-bg-card)}[data-theme=light] .range-value,[data-theme=light] .result-value,[data-theme=light] .gauge-status{color:var(--calc-cyan)}[data-theme=light] .action-btn,[data-theme=light] .preset-chip{background:var(--calc-bg-card);border-color:var(--calc-border-default);color:var(--calc-text-primary)}[data-theme=light] .action-btn:hover,[data-theme=light] .preset-chip:hover{border-color:var(--calc-cyan)}[data-theme=light] .preset-chip.active{border-color:var(--calc-cyan);color:var(--calc-cyan);background:#0891b21a}[data-theme=light] .tab-btn{background:var(--calc-bg-input);border-color:var(--calc-border-default);color:var(--calc-text-faded)}[data-theme=light] .tab-btn:hover{color:var(--calc-text-primary);border-color:var(--calc-cyan)}[data-theme=light] .tab-btn.active{background:var(--calc-cyan);border-color:var(--calc-cyan);color:#fff}[data-theme=light] .interpretation,[data-theme=light] .panel-intro{border-top-color:var(--calc-border-default);color:var(--calc-text-faded)}[data-theme=light] .detail-row{border-color:var(--calc-border-default);background:var(--calc-bg-input)}[data-theme=light] .detail-row--source{border-color:var(--calc-cyan);box-shadow:0 0 0 1px var(--calc-cyan) inset}[data-theme=light] .detail-value,[data-theme=light] .scaled-table td{color:var(--calc-text-primary)}[data-theme=light] .scaled-table th{color:var(--calc-text-dim);border-bottom-color:var(--calc-border-default)}