:root{--bg: #fafafa;--fg: #111;--muted: #5b6470;--brand: #0a66c2;--brand-dark: #074a8c;--accent: #ff7a00;--card: #fff;--border: #e3e6ea;--radius: 10px;--max: 980px;--font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font);font-size:17px;line-height:1.55;color:var(--fg);background:var(--bg)}a{color:var(--brand-dark)}.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;z-index:50;background:#fff;padding:8px 12px;border-radius:6px}.site-header{background:#fff;border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding-top:12px;padding-bottom:12px;gap:12px;flex-wrap:wrap}.brand{color:inherit;text-decoration:none;display:flex;flex-direction:column;line-height:1.1}.brand strong{color:var(--brand);font-size:1.4rem}.brand .tagline{font-size:.78rem;color:var(--muted)}.nav-primary{display:flex;gap:6px 16px;flex-wrap:wrap}.nav-primary a{color:var(--fg);text-decoration:none;font-size:.92rem}.nav-primary a:hover{color:var(--brand)}.content{padding-top:24px;padding-bottom:40px;min-height:60vh}.hero{padding:24px 0 12px}.hero h1{margin:0 0 8px;font-size:1.95rem;line-height:1.2}.lead{font-size:1.1rem;color:var(--muted);margin:0 0 16px}.category{margin:36px 0}.category h2{font-size:1.5rem;margin:0 0 14px;padding-bottom:6px;border-bottom:2px solid var(--brand);display:inline-block}.category h2 a{color:inherit;text-decoration:none}.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px}.tool-card{display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:16px;color:inherit;text-decoration:none;transition:transform .12s,box-shadow .12s,border-color .12s}.tool-card:hover{transform:translateY(-2px);box-shadow:0 4px 14px #0000000f;border-color:var(--brand)}.tool-card h3,.tool-card .tool-card__t{display:block;margin:0 0 6px;font-size:1.05rem;font-weight:700;color:var(--brand-dark)}.tool-card p{margin:0;font-size:.92rem;color:var(--muted)}.chip-list{display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0;list-style:none}.chip-list a{display:inline-block;padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:#fff;text-decoration:none;font-size:.92rem}.chip-list a:hover{border-color:var(--brand)}.tool-page{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:22px}.breadcrumb{font-size:.85rem;color:var(--muted);margin:0 0 6px}.breadcrumb a{color:var(--muted)}.tool-hero h1{margin:0 0 8px;font-size:1.7rem;line-height:1.25}.tool-app{margin:18px 0 8px}.tool-form{display:flex;flex-direction:column;gap:14px;max-width:520px}.tool-form label.block{display:flex;flex-direction:column;gap:4px;font-size:.92rem;color:var(--muted)}.tool-form input[type=number],.tool-form input[type=text],.tool-form input[type=date],.tool-form input[type=time],.tool-form input[type=url],.tool-form select,.tool-form textarea{font-family:inherit;font-size:1rem;padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:#fff;color:var(--fg);width:100%}.tool-form textarea{min-height:140px;resize:vertical}.tool-form input:focus,.tool-form select:focus,.tool-form textarea:focus{outline:2px solid var(--brand);border-color:var(--brand)}.tool-form fieldset{border:1px solid var(--border);border-radius:8px;padding:10px 14px}.tool-form fieldset legend{font-size:.85rem;color:var(--muted);padding:0 6px}.tool-form fieldset label{display:inline-flex;align-items:center;gap:6px;margin-right:18px}.tool-form .row{display:flex;gap:12px;flex-wrap:wrap}.tool-form .row>*{flex:1 1 140px}.btn-primary{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:12px 18px;font-size:1rem;font-weight:600;cursor:pointer;transition:background .12s}.btn-primary:hover{background:var(--brand-dark)}.btn-secondary{background:#fff;color:var(--brand-dark);border:1px solid var(--brand);border-radius:8px;padding:10px 16px;font-size:.95rem;font-weight:600;cursor:pointer}.btn-copy{background:transparent;border:1px solid var(--border);padding:4px 10px;border-radius:6px;font-size:.85rem;cursor:pointer;color:var(--muted)}.btn-copy:hover{background:#f4f6f8;color:var(--fg)}.btn-copy.copied{background:var(--brand);color:#fff;border-color:var(--brand)}.result{margin-top:18px;padding:16px;background:#f4f7fb;border-radius:8px;border:1px solid #d8e2ef}.result h2{margin:0 0 10px;font-size:1.15rem}.result--error{background:#fff4f4;border-color:#f3c2c2}.result-note{font-size:.85rem;color:var(--muted);margin:0 0 6px}.big-number{font-size:3rem;font-weight:700;color:var(--brand);margin:0 0 4px;line-height:1;overflow-wrap:anywhere}.name-list{display:flex;flex-wrap:wrap;gap:10px;padding:0;margin:0;list-style:none}.name-list li{background:#fff;padding:8px 14px;border-radius:999px;border:1px solid var(--border);font-weight:500}.phrase-list{display:flex;flex-direction:column;gap:10px}.phrase{margin:0;padding:12px 14px;background:#fff;border-left:3px solid var(--brand);border-radius:4px;display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.phrase p{margin:0;flex:1}.collection{margin-top:28px}.collection h2{font-size:1.3rem;margin:0 0 6px}.collection h3{font-size:1.1rem;margin:22px 0 10px}.ref-table{width:100%;border-collapse:collapse;margin-top:24px;font-size:.92rem}.ref-table caption{text-align:left;padding:8px 0;color:var(--muted)}.ref-table th,.ref-table td{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}.ref-table th{background:#f4f7fb}.table-scroll{overflow-x:auto}.tool-body{margin-top:28px;line-height:1.7}.tool-body h2{font-size:1.25rem;margin:24px 0 8px}.tool-body h3{font-size:1.08rem;margin:18px 0 6px}.tool-body code{background:#eef1f5;padding:2px 6px;border-radius:4px;font-size:.95em}.related{margin-top:28px}.related h2{font-size:1.2rem;margin:0 0 12px}.faq{margin-top:28px}.faq details{background:#fff;border:1px solid var(--border);border-radius:8px;padding:10px 14px;margin-bottom:8px}.faq summary{cursor:pointer;font-weight:600}.faq summary::-webkit-details-marker{color:var(--brand)}.muted{color:var(--muted)}.about,.prose{margin:40px 0 20px}.prose{max-width:760px;line-height:1.7}.prose h1{font-size:1.8rem;line-height:1.25}.prose h2{font-size:1.25rem;margin-top:28px}.error{text-align:center;padding:40px 0}.error h1{font-size:4rem;margin:0;color:var(--brand)}.u-box{margin:18px auto;display:none;justify-content:center;max-width:100%;overflow:hidden}.u-box--a2{display:flex;min-height:250px}@media(min-width:800px){.u-box--a1{display:flex;min-height:90px}}.u-box--n1{display:block;min-height:300px}.u-rail{display:none;position:fixed;top:90px;width:160px;z-index:5}.u-rail--l{left:max(8px,calc(50% - 674px))}.u-rail--r{right:max(8px,calc(50% - 674px))}.u-rail .u-box{display:block;margin:0}@media(min-width:1320px){.u-rail{display:block}}.u-dock{display:none}@media(max-width:1319.98px){.u-dock{display:block;position:fixed;left:0;right:0;bottom:0;z-index:6;min-height:50px;background:#fff;border-top:1px solid #e2e6ea;box-shadow:0 -2px 8px #00000014;text-align:center}.u-dock .u-box{display:flex;margin:0;min-height:50px}body.has-dock{padding-bottom:56px}}.u-dock[hidden]{display:none!important}.u-dock__x{position:absolute;top:-26px;right:8px;width:26px;height:26px;line-height:24px;padding:0;border:1px solid #e2e6ea;border-bottom:none;border-radius:6px 6px 0 0;background:#fff;color:#555;font-size:18px;cursor:pointer}.u-consent{position:fixed;left:12px;right:12px;bottom:12px;z-index:30;max-width:720px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 6px 24px #00000026;padding:14px 16px;display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:.92rem}.u-consent[hidden]{display:none}.u-consent p{margin:0;flex:1 1 320px}.u-consent__btns{display:flex;gap:8px}.u-consent .btn-primary,.u-consent .btn-secondary{padding:8px 16px}.site-footer{background:#1e2530;color:#c9d1da;padding:24px 0;margin-top:40px}.site-footer p{margin:4px 0;font-size:.92rem}.site-footer a{color:#e6ebf2}.footer-links{display:flex;flex-wrap:wrap;gap:6px 18px;margin:10px 0;font-size:.92rem}.footer-donate{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:#283040;border:1px solid #3a4456;border-radius:var(--radius);padding:14px 18px;margin-bottom:16px}.footer-donate__txt{color:#e6ebf2;font-size:.95rem}.footer-donate__btn{background:var(--accent);color:#1e2530!important;text-decoration:none;font-weight:700;font-size:.95rem;padding:9px 20px;border-radius:999px;white-space:nowrap;transition:filter .12s}.footer-donate__btn:hover{filter:brightness(1.08)}@media(max-width:600px){.hero h1{font-size:1.55rem}.tool-hero h1{font-size:1.4rem}.big-number{font-size:2.4rem}.tool-page{padding:16px}.footer-donate{flex-direction:column;align-items:stretch;text-align:center}.footer-donate__btn{text-align:center}}