: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;--green:#1a6e3c;--green-light:#e8f5ee;--red:#b91c1c;--red-light:#fef2f2;--red-border:#fca5a5;--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;}.settings-bar{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start;}.setting-group{display:flex;flex-direction:column;gap:6px;}.setting-label{font-size:10px;font-weight:700;color:var(--text3);text-transform:uppercase;letter-spacing:.07em;}.toggle-row{display:flex;gap:4px;}.tog-btn{padding:7px 14px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface);font-family:inherit;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s;}.tog-btn.active{border-color:var(--tantive-main-dark-color);background:var(--tantive-body-background-color);}.tog-btn:hover:not(.active){background:var(--surface2);}.setting-sep{width:1px;background:var(--border);align-self:stretch;margin:0 4px;}.section-label{font-size:12px;font-weight:700;color:var(--text2);margin-bottom:8px;}.textarea-wrap{position:relative;}textarea{width:100%;height:180px;padding:12px 14px;resize:vertical;border:1.5px solid var(--border);border-radius:var(--radius);font-family:var(--mono);font-size:13px;color:var(--text);background:var(--surface);outline:none;transition:border-color .15s;line-height:1.7;}textarea:focus{border-color:var(--tantive-main-dark-color);}textarea.has-error{border-color:var(--red);background:var(--red-light);}.textarea-footer{display:flex;justify-content:space-between;align-items:center;margin-top:8px;}.char-count{font-size:11px;}.action-row{display:flex;gap:8px;}.btn{padding:8px 16px;border-radius:var(--radius);font-family:inherit;font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;}.btn-primary{border:none;background:var(--accent);color:#fff;}.btn-primary:hover{background:var(--accent-dark);}.btn-secondary{border:1px solid var(--border);background:var(--surface);}.btn-secondary:hover{background:var(--surface2);border-color:var(--border2);}.btn-copy{border:1.5px solid var(--border);background:var(--surface);}.btn-copy:hover{background:var(--surface2);border-color:var(--border2);}.btn-copy.copied{color:var(--green);border-color:var(--green);background:var(--green-light);}.btn-convert{width:100%;padding:12px;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;letter-spacing:.02em;}.btn-convert:hover{filter:brightness(.88);}.btn-convert:active{transform:scale(.99);}.output-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;}.output-display{min-height:120px;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface2);font-family:var(--mono);font-size:13px;color:var(--text);line-height:1.7;word-break:break-all;white-space:pre-wrap;}.output-display.empty{color:var(--text3);font-family:inherit;font-size:13px;}.output-display.has-error{border-color:var(--red-border);background:var(--red-light);color:var(--red);}.output-meta{font-size:11px;margin-top:6px;}.error-panel{display:none;background:var(--red-light);border:1.5px solid var(--red-border);border-radius:var(--radius);padding:10px 14px;margin-top:8px;}.error-panel.show{display:block;}.error-title{font-size:12px;font-weight:700;color:var(--red);margin-bottom:3px;}.error-msg{font-size:12px;color:var(--red);font-family:var(--mono);}.datauri-note{font-size:11px;margin-top:6px;line-height:1.6;}@media (max-width:520px){.settings-bar{gap:12px}.setting-sep{display:none}}.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}.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}}