:root{--ink:#12141a;--muted:#5c6472;--line:#e4e7ee;--paper:#fff;--wash:#f6f7fb;--brand:#1d4ed8;--brand2:#1e3a8a;--accent:#eff4ff;--ok:#0f7b4c;--err:#b42318;--mono:ui-monospace, SFMono-Regular, Menlo, Consolas, monospace}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--ink);background:var(--paper);margin:0;font-family:Arial,Helvetica,sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.wrap{width:min(1120px,100% - 32px);margin:auto}.skip{z-index:30;background:var(--brand);color:#fff;border-radius:8px;padding:8px 12px;font-weight:700;position:absolute;top:-40px;left:12px}.skip:focus{top:12px}.site-header{border-bottom:1px solid var(--line);z-index:20;background:#fff;align-items:center;height:64px;display:flex;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;gap:20px;display:flex}.brand{letter-spacing:-.5px;font-size:21px;font-weight:800}.brand i{color:var(--brand);font-style:normal}.navlinks{color:#4b5565;gap:16px;font-size:14px;display:flex}.nav-more{display:none;position:relative}.nav-more summary{cursor:pointer;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:14px;font-weight:700;list-style:none}.nav-more summary::-webkit-details-marker{display:none}.nav-more nav{border:1px solid var(--line);background:#fff;border-radius:12px;flex-direction:column;min-width:200px;padding:8px;display:flex;position:absolute;top:42px;right:0;box-shadow:0 12px 32px #12141a14}.nav-more nav a{border-radius:8px;padding:10px 12px}.nav-more nav a:hover{background:var(--wash)}.hero{background:radial-gradient(circle at 80% 0,#e8eeff 0,#0000 28%),linear-gradient(#f7f9ff,#fff 70%);padding:64px 0 48px}.hero h1{letter-spacing:-2.4px;max-width:820px;margin:10px 0 12px;font-size:clamp(36px,7vw,64px);line-height:1.05}.hero p{color:var(--muted);max-width:640px;margin:0 0 28px;font-size:18px}.eyebrow{color:var(--brand);text-transform:uppercase;letter-spacing:1.4px;font-size:13px;font-weight:700}.search-wrap{max-width:680px;position:relative}.search{background:#fff;border:1px solid #cdd3e0;border-radius:14px;outline:none;width:100%;height:58px;padding:0 20px;font-size:17px;box-shadow:0 10px 32px #1d4ed814}.search:focus{border-color:var(--brand);box-shadow:0 0 0 4px #1d4ed818}.suggestions{border:1px solid var(--line);z-index:5;background:#fff;border-radius:12px;position:absolute;top:66px;left:0;right:0;overflow:hidden;box-shadow:0 16px 40px #12141a14}.suggestions a{border-bottom:1px solid var(--line);padding:12px 16px;display:block}.suggestions a:hover,.suggestions a:focus{background:var(--accent)}.trust-row{color:#52607a;flex-wrap:wrap;gap:18px;margin-top:18px;font-size:13px;font-weight:700;display:flex}.section{padding:52px 0}.section-head{justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px;display:flex}.section h2,.content h2{letter-spacing:-.6px;margin:0;font-size:26px}.muted{color:var(--muted)}.category-grid,.calc-list{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.category-card,.calc-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:22px;transition:transform .15s,border-color .15s,box-shadow .15s}.category-card:hover,.calc-card:hover{border-color:#b7c4ea;transform:translateY(-2px);box-shadow:0 10px 24px #1d4ed80d}.category-card h3,.calc-card h3{margin:0 0 8px;font-size:18px}.category-card p,.calc-card p{color:var(--muted);margin:0 0 14px;font-size:14px}.link{color:var(--brand);font-size:14px;font-weight:700}.popular-section{background:var(--wash);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.dir-group{margin:22px 0 8px}.dir-heading{margin:28px 0 10px;font-size:20px}.dir-heading a{color:inherit}.dir-list{flex-wrap:wrap;gap:8px 18px;margin:0 0 12px;padding:0;list-style:none;display:flex}.dir-list a{color:var(--brand);font-size:14px;font-weight:700}.breadcrumb{color:var(--muted);padding-top:22px;font-size:13px}.breadcrumb a{color:var(--brand);font-weight:700}.page-grid{grid-template-columns:minmax(0,1fr) 260px;gap:36px;padding:18px 0 64px;display:grid}.page-title h1{letter-spacing:-1.5px;margin:12px 0 8px;font-size:clamp(32px,5vw,46px);line-height:1.1}.page-title p{color:var(--muted);margin:0 0 20px;font-size:17px}.tool{border:1px solid var(--line);background:#fff;border-radius:16px;padding:20px;box-shadow:0 12px 36px #12141a0a}.tool label{margin:0 0 8px;font-size:13px;font-weight:700;display:block}.editor,.tool input,.tool select,.tool textarea{background:#fff;border:1px solid #cfd5e2;border-radius:10px;outline:none;width:100%;padding:12px 14px}.editor{resize:vertical;min-height:140px;font-family:var(--mono);font-size:14px;line-height:1.5}.editor.tall{min-height:220px}.tool input:focus,.tool select:focus,.tool textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px #1d4ed818}.tool-actions,.inline-opts{flex-wrap:wrap;gap:8px;margin:12px 0;display:flex}.btn{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:10px;min-height:44px;padding:0 14px;font-weight:700}.btn:hover{background:var(--wash)}.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}.btn.primary:hover{background:var(--brand2)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.small{min-height:36px;font-size:13px}.field-inline{align-items:center;gap:10px;margin:0 12px 0 0;display:flex}.field-inline select{width:auto;min-width:140px}.check{align-items:center;gap:8px;margin:8px 16px 8px 0;font-weight:600;display:inline-flex}.split{grid-template-columns:1fr 1fr;gap:14px;display:grid}.result{background:var(--ink);color:#fff;border-radius:12px;margin-top:12px;padding:18px}.result-label{color:#a9b4c7;text-transform:uppercase;letter-spacing:.7px;font-size:12px;font-weight:700}.result-value{letter-spacing:-1.4px;margin:4px 0 12px;font-size:42px;font-weight:800}.result-pre{white-space:pre-wrap;word-break:break-word;font-family:var(--mono);margin:8px 0 0;font-size:14px;line-height:1.45}.result-pre.wrap{overflow-wrap:anywhere}.result-pre.prose{font-family:Arial,Helvetica,sans-serif;font-size:15px}.privacy-note{color:var(--muted);margin:12px 0 0;font-size:13px;font-weight:700}.banner{border-radius:10px;margin:10px 0;padding:12px 14px;font-weight:700}.banner.ok{color:var(--ok);background:#e8f7ef}.banner.err{color:var(--err);background:#fff1f0}.details{gap:0;display:grid}.details>div{border-top:1px solid #ffffff1c;justify-content:space-between;gap:12px;padding:10px 0;font-size:14px;display:flex}.details>div:first-child{border-top:0}.stat-grid{grid-template-columns:1fr 1fr;gap:8px 16px;display:grid}.stat-grid span{color:#c5cedb;justify-content:space-between;font-size:13px;display:flex}.stat-grid b{color:#fff}.case-list{gap:8px;margin-top:8px;display:grid}.case-row{border:1px solid var(--line);border-radius:10px;grid-template-columns:140px 1fr auto;align-items:center;gap:10px;padding:10px 12px;display:grid}.case-row code{font-family:var(--mono);overflow-wrap:anywhere;font-size:13px}.matches{margin:0;padding-left:18px}.matches code{font-family:var(--mono)}.flags{border:0;flex-wrap:wrap;gap:4px 8px;margin:0 0 8px;padding:0;display:flex}.flags legend{padding:0;font-size:13px;font-weight:700}.diff{font-family:var(--mono);border:1px solid var(--line);border-radius:12px;max-height:420px;margin-top:12px;font-size:13px;overflow:auto}.diff div{white-space:pre-wrap;padding:4px 10px}.diff-add{background:#e8f7ef}.diff-del{background:#fff1f0}.diff-same{background:#fff}.diff span{width:16px;color:var(--muted);display:inline-block}.content{padding-top:28px}.content h2{margin:32px 0 10px}.content p{color:#3b4250}.faq details{border-top:1px solid var(--line);padding:14px 0}.faq summary{cursor:pointer;font-weight:700}.related{grid-template-columns:1fr 1fr;gap:10px;display:grid}.related a{border:1px solid var(--line);color:var(--brand);border-radius:10px;padding:14px;font-size:14px;font-weight:700}.more-list{padding-left:18px}.more-list a{color:var(--brand);font-weight:700}.aside{padding-top:118px}.aside-nav{flex-direction:column;gap:8px;margin-top:24px;display:flex}.aside-nav h2{margin:0 0 4px;font-size:15px}.aside-nav a{color:var(--brand);font-size:13px;font-weight:700}.ad{color:#8b93a3;letter-spacing:1px;text-transform:uppercase;background:#f7f8fb;border:1px dashed #d5dae6;border-radius:12px;place-items:center;min-height:250px;font-size:11px;display:grid}.ad-wide{min-height:110px;margin:28px 0}.notice{color:var(--muted);font-size:13px}.category-hero,.plain{padding:48px 0 64px}.category-hero h1,.plain h1{letter-spacing:-1.4px;margin:0 0 10px;font-size:42px}.plain{max-width:760px}.footer{background:var(--ink);color:#d5dbe6;padding:42px 0}.footer-grid{grid-template-columns:1.3fr .9fr 1.1fr .7fr;gap:28px;display:grid}.footer small{color:#9aa6bb;max-width:320px;margin-top:10px;line-height:1.5;display:block}.footer nav{flex-direction:column;gap:8px;display:flex}.footer a{color:#c5cedb;font-size:13px}.footer a:hover{color:#fff}.footer .brand i{color:#93b4ff}@media (max-width:900px){.navlinks{display:none}.nav-more{display:block}.category-grid,.calc-list,.page-grid,.split,.related,.footer-grid,.case-row{grid-template-columns:1fr}.aside{display:none}.hero{padding:40px 0 32px}.result-value{font-size:34px}.stat-grid{grid-template-columns:1fr}}@media (max-width:520px){.wrap{width:min(100% - 24px,1120px)}.hero h1{letter-spacing:-1.4px}.tool,.result{padding:16px}}