:root{--bg:#f0f0ec;--surface:#ffffff;--surface2:#f5f4f0;--surface3:#eceae4;--border:#dddbd3;--border2:#c4c2b8;--text:#1a1a16;--text2:#585850;--text3:#989888;--accent:#1a5a9a;--accent-light:#eaf0fb;--accent-dark:#0f3878;--best:#1a6e3c;--best-light:#e8f5ee;--best-border:#a8d5b8;--mono:'DM Mono',monospace;--radius:8px;--radius-lg:14px;}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}.container__inner{display:flex;justify-content:space-between;gap:1em;max-width:var(--tantive-container-width-pc);margin:50px auto;}.tool-area{flex-grow:1;}h1{font-size:1.5em;margin-bottom:20px;}h2{position:relative;font-size:1.5em;padding:.25em .5em;width:-moz-fit-content;width:fit-content;}h2::before{content:"";position:absolute;top:0;left:0;width:5px;height:100%;border-radius:3px;background-color:var(--tantive-main-dark-color);}.title-section{margin-bottom:50px;}.title-wrap{position:relative;width:-moz-fit-content;width:fit-content;}.title-catch{font-size:.75em;}.card{background:white;border:1px solid var(--tantive-main-dark-color);border-radius:5px;padding:1.5em;margin-bottom:1em;box-shadow:var(--shadow);}.card-head{font-size:11px;font-weight:700;letter-spacing:.07em;color:var(--gray-600);text-transform:uppercase;padding:9px 14px 7px;background:var(--gray-100);border-bottom:1px solid var(--gray-300);}.card-title{font-size:.75em;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1em;}.unit-selector{display:flex;gap:6px;flex-wrap:wrap;}.unit-btn{padding:8px 16px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface);font-family:var(--mono);font-size:13px;font-weight:500;color:var(--text2);cursor:pointer;transition:all .15s;}.unit-btn.active{border-color:var(--tantive-main-dark-color);background:var(--tantive-body-background-color);font-weight:700;}.unit-btn:hover:not(.active){background:var(--surface2);border-color:var(--border2);}.items-list{display:flex;flex-direction:column;gap:10px;margin-bottom:12px;}.item-row{display:grid;grid-template-columns:1fr 100px 100px 36px;gap:8px;align-items:end;animation:fadeIn .2s ease;}@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.item-field{display:flex;flex-direction:column;gap:4px;}.item-field-label{font-size:11px;color:var(--text3);font-weight:500;}.item-name-input{width:100%;padding:9px 12px;border:1.5px solid var(--border);border-radius:var(--radius);font-family:inherit;font-size:14px;color:var(--text);background:var(--surface);outline:none;transition:border-color .15s;}.item-name-input:focus{border-color:var(--accent);}.item-name-input::-moz-placeholder{color:var(--text3);}.item-name-input::placeholder{color:var(--text3);}.item-number-input{width:100%;padding:9px 10px;border:1.5px solid var(--border);border-radius:var(--radius);font-family:var(--mono);font-size:14px;color:var(--text);background:var(--surface);outline:none;transition:border-color .15s;text-align:right;-webkit-appearance:textfield;appearance:textfield;-moz-appearance:textfield;}.item-number-input::-webkit-inner-spin-button,.item-number-input::-webkit-outer-spin-button{-webkit-appearance:none;}.item-number-input:focus{border-color:var(--accent);}.item-number-input::-moz-placeholder{color:var(--text3);text-align:right;}.item-number-input::placeholder{color:var(--text3);text-align:right;}.item-delete-btn{width:36px;height:36px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--text3);font-size:16px;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;flex-shrink:0;line-height:1;padding:0;}.item-delete-btn:hover{background:#fff0f0;border-color:#f5aaaa;color:#c0392b;}.item-delete-btn:disabled{opacity:.3;cursor:not-allowed;}.item-delete-btn:disabled:hover{background:var(--surface);border-color:var(--border);color:var(--text3);}.btn-row{display:flex;gap:8px;}.btn-add{flex:1;padding:10px;border:1.5px dashed var(--border2);border-radius:var(--radius);background:transparent;font-family:inherit;font-size:13px;font-weight:500;color:var(--text2);cursor:pointer;transition:all .15s;}.btn-add:hover{border-color:var(--tantive-main-dark-color);background:var(--tantive-body-background-color);}.btn-calc-wrap{text-align:center;margin-bottom:.5rem;}.btn-compare{width:100%;padding:10px 24px;border:none;border-radius:var(--radius);background:var(--tantive-main-dark-color);color:#fff;font-family:inherit;font-size:14px;font-weight:700;cursor:pointer;transition:all .15s;white-space:nowrap;}.btn-compare:hover{filter:brightness(.88);}.btn-compare:active{transform:scale(.99);}.notice-result-area{display:none;}.result-list{display:flex;flex-direction:column;gap:10px;}.result-item{border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:16px;background:var(--surface2);position:relative;transition:all .2s;}.result-item.best{border-color:var(--best-border);background:var(--best-light);}.result-rank{position:absolute;top:12px;right:12px;font-size:11px;font-weight:700;padding:3px 10px;border-radius:20px;background:var(--surface3);color:var(--text3);}.result-item.best .result-rank{background:var(--best);color:#fff;}.result-name{font-size:13px;font-weight:700;color:var(--text2);margin-bottom:6px;padding-right:60px;}.result-item.best .result-name{color:var(--best);}.result-price-row{display:flex;align-items:baseline;gap:6px;margin-bottom:4px;}.result-unit-price{font-family:var(--mono);font-size:28px;font-weight:500;color:var(--text);line-height:1;}.result-item.best .result-unit-price{color:var(--best);}.result-unit-label{font-size:13px;color:var(--text3);}.result-input-summary{font-size:12px;color:var(--text3);margin-top:4px;}.result-diff{margin-top:8px;padding:6px 10px;background:rgba(0,0,0,.04);border-radius:var(--radius);font-size:12px;color:var(--text2);}.result-item.best .result-diff{background:rgba(26,110,60,.08);color:var(--best);font-weight:500;}.usecase-section{margin-top:1.5em;}.usecase-section li::before{content:"- ";}.related-tools-section{margin-top:1.5em;}.related-tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1em;list-style:none;padding:0;margin:1em 0 0 0;}.related-tools-link{display:flex;height:100%;flex-direction:column;align-items:center;gap:8px;padding:1em;border:1px solid var(--tantive-main-dark-color);border-radius:8px;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s;}.related-tools-link:hover{box-shadow:0 4px 12px rgba(0,0,0,.1);transform:translateY(-2px);}.related-tools-emoji{font-size:2rem;}.related-tools-name{font-weight:bold;font-size:1rem;}.related-tools-desc{font-size:.8rem;color:#888;text-align:center;}.ad-area{flex:0 0 200px;}.ad-area-wrap{width:400px;position:sticky;top:100px;}.ad-area-wrap ins{width:300px;height:250px;}@media screen and (max-width:1280px){.container__inner{flex-direction:column-reverse;padding:0 1em}.card{padding-inline:.5rem}.notice-result-area{display:block}.ad-area{flex:unset}.ad-area-wrap{margin:auto;width:100%}.ad-area-wrap ins{width:300px;height:100px;margin:auto}.ad-moved-area:has(>*){margin-top:1em;margin-bottom:1em}}