:root{--bg:#070a10;--panel:#0f1420;--panel2:#151b29;--panel3:#0b1019;--text:#f4f7ff;--muted:#95a1b5;--line:#263044;--line2:#34425c;--blue:#39c7ff;--blue2:#5278ff;--violet:#8a61ff;--green:#38d996;--red:#ff7086;--amber:#ffc45c;--shadow:0 20px 70px rgba(0,0,0,.35)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(circle at 18% 0%,rgba(57,199,255,.08),transparent 25%),radial-gradient(circle at 83% 0%,rgba(138,97,255,.09),transparent 28%),var(--bg);color:var(--text);font:16px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{color:inherit}.container{width:min(1180px,calc(100% - 32px));margin:auto}.narrow{width:min(840px,calc(100% - 32px))}
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,10,16,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.06)}.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:8px;min-width:0}.brand-symbol{width:31px;height:31px;object-fit:contain}.brand-wordmark{width:112px;height:auto;object-fit:contain}.tools-mark{font-size:12px;text-transform:uppercase;letter-spacing:.16em;font-weight:900;color:#d9e6ff;padding:5px 8px;border:1px solid rgba(82,120,255,.35);background:rgba(82,120,255,.1);border-radius:999px}.navlinks{display:flex;gap:22px;font-size:14px;color:#c5cede}.navlinks a:hover{color:#fff}.mobile-home{display:none;width:38px;height:38px;border-radius:11px;border:1px solid var(--line);place-items:center;background:var(--panel)}
.hero{padding:74px 0 48px;text-align:center}.hero-inner{display:flex;flex-direction:column;align-items:center}.hero-brand{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:16px}.hero-brand img{width:176px;height:auto}.hero-brand span{font-size:11px;text-transform:uppercase;letter-spacing:.22em;font-weight:900;color:#a8b8d2;margin-left:.22em}.eyebrow,.section-kicker{font-size:12px;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:#b9dfff}.eyebrow{padding:8px 12px;border:1px solid rgba(57,199,255,.25);background:rgba(57,199,255,.07);border-radius:999px}.hero h1{font-size:clamp(43px,7vw,78px);line-height:.98;letter-spacing:-.058em;margin:22px auto 18px;max-width:980px}.hero h1 span{background:linear-gradient(90deg,#71dcff,#7695ff 48%,#a77aff);-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{max-width:790px;margin:0;color:var(--muted);font-size:18px}.search-wrap{width:min(760px,100%);margin-top:34px;position:relative}.search-wrap>span{position:absolute;left:18px;top:50%;translate:0 -50%;font-size:22px;color:#728098}.search{width:100%;padding:18px 18px 18px 50px;border-radius:17px;border:1px solid var(--line);background:rgba(15,20,32,.94);color:var(--text);outline:0;box-shadow:var(--shadow)}.search:focus{border-color:#4778b9;box-shadow:0 0 0 4px rgba(57,199,255,.08),var(--shadow)}.hero-stats{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:26px}.hero-stats div{display:flex;align-items:baseline;gap:7px;padding:8px 12px;border-radius:12px;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.055)}.hero-stats b{font-size:16px}.hero-stats span{color:var(--muted);font-size:12px}
.section{padding:34px 0 56px}.section-heading{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:18px}.section-heading h2{font-size:32px;letter-spacing:-.04em;margin:4px 0 0}.section-heading p{color:var(--muted);margin:6px 0 0;max-width:730px}.category-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.category-card{cursor:pointer;text-align:left;padding:18px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,var(--panel2),var(--panel));transition:.18s transform,.18s border-color}.category-card:hover{transform:translateY(-2px);border-color:#456589}.category-card b,.category-card span{display:block}.category-card b{font-size:16px}.category-card span{font-size:12px;color:var(--muted);margin-top:4px}.filters{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}.chip{border:1px solid var(--line);background:var(--panel);color:#c4cede;padding:9px 13px;border-radius:999px;cursor:pointer}.chip:hover,.chip.active{background:rgba(82,120,255,.12);border-color:rgba(82,120,255,.45);color:#fff}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tool-card{min-height:190px;padding:20px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(180deg,rgba(21,27,41,.97),rgba(13,18,29,.97));display:flex;flex-direction:column;transition:.2s transform,.2s border-color,.2s box-shadow}.tool-card:hover{transform:translateY(-3px);border-color:#405a82;box-shadow:0 18px 45px rgba(0,0,0,.22)}.card-top{display:flex;align-items:flex-start;justify-content:space-between}.icon{width:44px;height:44px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(145deg,rgba(57,199,255,.12),rgba(138,97,255,.12));border:1px solid rgba(102,142,255,.22);font-size:21px;font-weight:900}.tag{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:#bdc8da;padding:5px 8px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.06);border-radius:999px}.tool-card h3{font-size:17px;line-height:1.25;margin:17px 0 7px;letter-spacing:-.02em}.tool-card p{font-size:13px;color:var(--muted);margin:0 0 16px}.card-arrow{font-size:12px;font-weight:800;color:#8ddcff;margin-top:auto}.empty-state{display:none;text-align:center;border:1px dashed var(--line2);border-radius:18px;padding:42px;color:var(--muted)}.empty-state b,.empty-state span{display:block}.empty-state b{color:#fff;font-size:18px}.empty-state .btn{margin-top:16px}.principles{padding-top:8px}.principle-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.principle-grid article{padding:22px;border-top:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}.principle-grid article>span{color:#6fcfff;font-size:12px;font-weight:900}.principle-grid h3{margin:8px 0 7px}.principle-grid p{margin:0;color:var(--muted);font-size:14px}
footer{border-top:1px solid var(--line);padding:34px 0 44px;color:var(--muted)}.footer-inner{display:grid;grid-template-columns:1.5fr 1fr auto;gap:28px;align-items:start}.footer-inner>div:first-child b,.footer-inner>div:first-child span{display:block}.footer-inner>div:first-child b{color:#fff}.footer-inner>div:first-child span{font-size:13px;margin-top:4px}.footer-links{display:flex;gap:12px 18px;flex-wrap:wrap;font-size:13px}.footer-links a:hover{color:white}.footer-inner small{font-size:12px}
/* tools */.tool-shell{padding:34px 0 70px}.back-link{display:inline-flex;align-items:center;gap:6px;color:#b8c7de;font-size:13px;font-weight:800;margin:4px 0 14px}.back-link:hover{color:#fff}.breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#76849a;font-size:12px;margin-bottom:18px}.breadcrumb a:hover{color:#cfe2ff}.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;align-items:start}.tool-panel{border:1px solid var(--line);border-radius:22px;padding:26px;background:rgba(15,20,32,.95);box-shadow:var(--shadow)}.tool-title{display:flex;gap:14px;align-items:flex-start;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.06)}.tool-title .icon{flex:0 0 auto}.tool-title h1{font-size:clamp(27px,4vw,36px);line-height:1.08;letter-spacing:-.045em;margin:0}.tool-title p{margin:7px 0 0;color:var(--muted);max-width:750px}.calc-card{margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:16px;background:var(--panel3)}.calc-card-head h2{font-size:17px;letter-spacing:-.02em;margin:0}.calc-card-head p{color:var(--muted);font-size:13px;margin:4px 0 0}.calc-fields,.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:14px}.form-grid.roomy{margin-top:22px}.field{display:flex;flex-direction:column;gap:6px;min-width:0}.field.full,.check-row.full{grid-column:1/-1}.field>span{font-size:12px;color:#c8d1df;font-weight:800}.field>span small{font-weight:600;color:#73839a}.input,.textarea,.select{width:100%;border:1px solid var(--line);border-radius:11px;background:#090e16;color:#f5f7ff;padding:12px 13px;outline:0}.input:focus,.textarea:focus,.select:focus{border-color:#3f78a7;box-shadow:0 0 0 3px rgba(57,199,255,.08)}.textarea{min-height:140px;resize:vertical}.textarea.compact{min-height:90px}.textarea.tall{min-height:220px}.input-wrap{position:relative;display:flex;align-items:center}.input-wrap>.input{padding-right:54px}.input-wrap em{position:absolute;right:12px;font-style:normal;color:#76859b;font-size:12px}.suffix-select{position:absolute;right:5px;border:0;background:#121a28;color:#cbd5e4;border-radius:8px;padding:6px;outline:0}.input-wrap:has(.suffix-select)>.input{padding-right:78px}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px}.btn{border:1px solid transparent;border-radius:11px;padding:11px 15px;font-weight:850;cursor:pointer;display:inline-flex;justify-content:center;align-items:center;gap:6px}.btn-primary{background:linear-gradient(135deg,#2f9ff3,#5e6af5 58%,#8158eb);color:white}.btn-secondary{background:#172033;border-color:#2a3850;color:#edf4ff}.btn-ghost{background:transparent;border-color:#2a3549;color:#aebbd0}.btn:hover{filter:brightness(1.08)}.inline-result{display:none;margin-top:13px;border-radius:13px;padding:14px;border:1px solid rgba(67,146,207,.22);background:rgba(50,127,191,.07)}.inline-result.show{display:block}.inline-result.large{margin-top:18px;padding:18px}.result-title{font-size:11px;text-transform:uppercase;letter-spacing:.09em;font-weight:900;color:#80d3ff}.result-value{font-size:27px;line-height:1.15;font-weight:950;letter-spacing:-.035em;margin-top:4px;word-break:break-word}.result-note{font-size:12px;color:var(--muted);margin-top:5px}.result-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}.metric{padding:10px;border-radius:10px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.055);min-width:0}.metric span,.metric b{display:block}.metric span{font-size:10px;color:#8390a4;text-transform:uppercase;letter-spacing:.05em}.metric b{font-size:15px;margin-top:2px;word-break:break-word}.result-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.result-error{border-color:rgba(255,112,134,.3);background:rgba(255,112,134,.06)}.result-error .result-title{color:#ff9cad}.tool-note{margin-top:18px;padding:13px 14px;border-left:3px solid #4e95e8;border-radius:8px;background:rgba(67,119,206,.08);color:#aab8cc;font-size:13px}.tool-note b{color:#e8f2ff}.check-row{display:flex;gap:10px;align-items:flex-start;padding:10px 0}.check-row input{margin-top:3px;accent-color:#5588ff}.check-row span b,.check-row span small{display:block}.check-row span b{font-size:13px}.check-row span small{font-size:11px;color:var(--muted)}.advanced{margin-top:14px;border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:#0b1019}.advanced summary{cursor:pointer;font-size:13px;font-weight:800;color:#cbd5e5}.mini-section{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.06)}.mini-section h2{font-size:15px;margin:0 0 10px}.projection-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:7px}.projection-item{padding:10px;background:#0c111b;border:1px solid var(--line);border-radius:10px}.projection-item b,.projection-item span{display:block}.projection-item span{color:var(--muted);font-size:10px}.projection-item b{font-size:13px;margin-top:2px}.case-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}.chip-action{cursor:pointer;border:1px solid var(--line);background:#101827;color:#d8e3f4;border-radius:999px;padding:8px 11px;font-size:12px;font-weight:800}.chip-action:hover{border-color:#4b70a0;background:#162238}.output-field{margin-top:16px}.clean-options{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 14px;margin-top:18px;padding:14px;border:1px solid var(--line);border-radius:14px;background:#0b1019}.clean-options label{display:flex;gap:8px;align-items:center;color:#bac5d6;font-size:12px}.clean-options input{accent-color:#5588ff}.clean-options label.wide{grid-column:1/-1;display:grid;grid-template-columns:150px 1fr}.comparison-strip{display:none;grid-template-columns:repeat(4,1fr);gap:8px;margin:14px 0}.comparison-strip.show{display:grid}.text-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:18px}.stat-box{padding:12px;border:1px solid var(--line);border-radius:12px;background:#0b1019}.stat-box b,.stat-box span{display:block}.stat-box b{font-size:20px}.stat-box span{font-size:10px;text-transform:uppercase;letter-spacing:.06em;color:#7d8ba0}.analysis-split{display:grid;grid-template-columns:1fr 1fr;gap:16px}.frequency-list{display:flex;gap:7px;flex-wrap:wrap}.word-pill{padding:6px 8px;border-radius:999px;background:#111a29;border:1px solid var(--line);font-size:11px}.word-pill b{color:#7ed7ff}.metric-list{display:grid;gap:7px}.metric-line{display:flex;justify-content:space-between;gap:12px;padding:8px 10px;background:#0b1019;border:1px solid var(--line);border-radius:9px;font-size:12px}.metric-line span{color:var(--muted)}.file-drop{display:flex;flex-direction:column;align-items:center;gap:7px;margin-top:20px;padding:26px;border:1px dashed #3c4b63;border-radius:16px;background:#0a0f18;cursor:pointer;text-align:center}.file-drop:hover{border-color:#5677a4}.file-drop input{position:absolute;opacity:0;pointer-events:none}.drop-icon{font-size:28px}.file-drop small{color:var(--muted)}.image-original{display:none;margin-top:14px}.image-original.show{display:grid;grid-template-columns:160px 1fr;gap:14px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:14px;background:#0b1019}.image-original img{width:160px;height:110px;object-fit:contain;border-radius:9px;background:repeating-conic-gradient(#1a2130 0 25%,#111723 0 50%) 50%/18px 18px}.image-meta{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.image-meta div{padding:8px;border-radius:9px;background:rgba(255,255,255,.03)}.image-meta span,.image-meta b{display:block}.image-meta span{font-size:10px;color:var(--muted)}.image-meta b{font-size:12px}.range-row{display:flex;align-items:center;gap:10px}.range-row input{width:100%;accent-color:#5a7eff}.range-row output{min-width:42px;font-size:12px;color:#b9c8dc}.color-input{height:44px;width:100%;padding:4px;border:1px solid var(--line);border-radius:10px;background:#090e16}.image-result-grid{display:grid;grid-template-columns:200px 1fr;gap:16px;align-items:center}.image-result-grid img{width:200px;max-height:160px;object-fit:contain;border-radius:10px;background:repeating-conic-gradient(#1a2130 0 25%,#111723 0 50%) 50%/18px 18px}.output-url{padding:11px;border:1px solid var(--line);background:#090e16;border-radius:9px;word-break:break-all;font:12px/1.45 ui-monospace,SFMono-Regular,Consolas,monospace}.param-table{width:100%;border-collapse:collapse;margin-top:10px;font-size:12px}.param-table td{border-top:1px solid rgba(255,255,255,.06);padding:7px 5px;vertical-align:top}.param-table td:first-child{color:#7fd4ff;width:130px}.param-table td:last-child{word-break:break-all;color:#dce6f5}
.sidebar{position:sticky;top:92px}.side-card,.privacy-card{border:1px solid var(--line);border-radius:16px;background:rgba(15,20,32,.8);padding:16px;margin-bottom:12px}.side-card h3{margin:0 0 8px;font-size:14px}.related-list{display:grid}.related-link{display:grid;grid-template-columns:28px 1fr auto;gap:9px;align-items:center;padding:10px 0;border-top:1px solid rgba(255,255,255,.05)}.related-link:first-child{border-top:0}.related-link>span{font-size:16px}.related-link b,.related-link small{display:block}.related-link b{font-size:11px}.related-link small{font-size:10px;color:var(--muted)}.related-link i{font-style:normal;color:#71829b}.privacy-card{display:flex;gap:10px}.privacy-card>span{font-size:18px}.privacy-card b{font-size:12px}.privacy-card p{font-size:11px;color:var(--muted);margin:3px 0 0}.ad-placeholder{display:none;height:250px;border:1px dashed #313b4e;border-radius:16px;place-items:center;align-content:center;gap:2px;color:#607086;background:rgba(255,255,255,.012)}.ad-placeholder span{font-size:10px;text-transform:uppercase;letter-spacing:.1em}.ad-placeholder small{font-size:10px}.info-section{margin-top:14px;padding:22px;border:1px solid var(--line);border-radius:18px;background:rgba(15,20,32,.7)}.info-section h2{font-size:20px;margin:0 0 8px;letter-spacing:-.025em}.info-section p{color:var(--muted);margin:0}.formula-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:14px}.formula-grid div{padding:12px;border-radius:11px;background:#0b1019;border:1px solid var(--line)}.formula-grid b,.formula-grid code{display:block}.formula-grid b{font-size:11px}.formula-grid code{font-size:11px;color:#7bd5ff;margin-top:5px;white-space:normal}
/* static */.static-shell{padding:38px 0 72px}.static-card{padding:30px;border:1px solid var(--line);background:rgba(15,20,32,.92);border-radius:22px;box-shadow:var(--shadow)}.static-card h1{font-size:38px;letter-spacing:-.045em;margin:6px 0 5px}.static-card .lead{color:var(--muted);font-size:17px;margin:0 0 24px}.prose{color:#b2bed0}.prose h2{color:#f3f6fc;font-size:20px;margin:26px 0 7px}.prose p{margin:0 0 14px}.static-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:26px}
@media(max-width:1000px){.category-grid{grid-template-columns:repeat(3,1fr)}.tool-grid{grid-template-columns:repeat(2,1fr)}.tool-layout{grid-template-columns:1fr}.sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:12px}.ad-placeholder{height:auto;min-height:150px}.footer-inner{grid-template-columns:1fr 1fr}.footer-inner small{grid-column:1/-1}.projection-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.container,.narrow{width:min(100% - 22px,1180px)}.nav{height:64px}.brand-symbol{width:28px;height:28px}.brand-wordmark{width:94px;height:auto}.tools-mark{font-size:9px}.navlinks{display:none}.mobile-home{display:grid}.hero{padding:50px 0 32px}.hero h1{font-size:42px}.hero p{font-size:15px}.hero-stats{gap:6px}.hero-stats div{flex:1 1 130px;justify-content:center}.category-grid{grid-template-columns:repeat(2,1fr)}.section-heading,.tools-heading{align-items:flex-start;flex-direction:column}.filters{justify-content:flex-start}.tool-grid{grid-template-columns:1fr}.principle-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.tool-shell{padding-top:22px}.tool-panel{padding:18px}.tool-title h1{font-size:28px}.calc-fields,.form-grid{grid-template-columns:1fr}.field.full,.check-row.full{grid-column:auto}.result-metrics{grid-template-columns:repeat(2,1fr)}.formula-grid{grid-template-columns:1fr}.sidebar{grid-template-columns:1fr}.projection-grid{grid-template-columns:repeat(2,1fr)}.text-stats{grid-template-columns:repeat(2,1fr)}.analysis-split{grid-template-columns:1fr}.clean-options{grid-template-columns:1fr}.clean-options label.wide{grid-column:auto;grid-template-columns:1fr}.image-original.show,.image-result-grid{grid-template-columns:1fr}.image-original img,.image-result-grid img{width:100%;height:180px}.static-card{padding:22px}.static-card h1{font-size:32px}}
/* Mobile navigation */
.nav{position:relative}
.mobile-menu-button{display:none;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:var(--panel);align-items:center;justify-content:center;padding:0;cursor:pointer}
.menu-lines{width:18px;display:grid;gap:4px}.menu-lines i{display:block;height:2px;border-radius:999px;background:#dce6f7;transition:transform .18s ease,opacity .18s ease}.mobile-menu-button[aria-expanded="true"] .menu-lines i:nth-child(1){transform:translateY(6px) rotate(45deg)}.mobile-menu-button[aria-expanded="true"] .menu-lines i:nth-child(2){opacity:0}.mobile-menu-button[aria-expanded="true"] .menu-lines i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.mobile-nav{display:none;position:absolute;right:0;top:58px;min-width:210px;padding:8px;background:rgba(11,16,27,.98);border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 50px rgba(0,0,0,.35)}.mobile-nav.open{display:grid}.mobile-nav a{padding:11px 12px;border-radius:9px;color:#d2daea;font-weight:700;font-size:14px}.mobile-nav a:hover,.mobile-nav a:focus-visible{background:rgba(86,127,255,.12);color:#fff;outline:none}
@media(max-width:700px){.mobile-home{display:none!important}.mobile-menu-button{display:flex}.mobile-nav{top:54px}}