:root{--blue:#1765f5;--blue2:#0878ff;--purple:#7b45f6;--ink:#091b46;--muted:#60739a;--line:#e4ebf7;--page:#f4f8ff;--white:#fff;--shadow:0 8px 24px rgba(27,68,140,.07)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--page);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[contenteditable=true]:focus-visible{outline:3px solid #77b8ff;outline-offset:2px}a{color:inherit;text-decoration:none}.topbar{min-height:70px;background:#fff;display:flex;align-items:center;gap:20px;padding:12px 24px;box-shadow:0 2px 12px #12345a08;position:sticky;top:0;z-index:10}.brand{display:flex;align-items:center;gap:10px;min-width:220px}.logo{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,#8b4bff,#057bff);color:white;display:grid;place-items:center;font-size:27px;font-weight:900;clip-path:polygon(50% 0,100% 100%,0 100%)}.brand-name{font-size:25px;font-weight:850;letter-spacing:-1px}.brand-name span{color:#0878ff}.tagline{font-size:12px;color:#7184aa;margin-top:-3px}.nav{display:flex;align-items:center;gap:3px;flex:1}.nav a{font-size:13px;font-weight:750;padding:11px 12px;border-radius:12px;white-space:nowrap}.nav a:hover{background:#edf4ff;color:#0878ff}.search{display:flex;align-items:center;gap:9px;background:#eef4ff;border-radius:24px;padding:12px 16px;min-width:170px;flex:1;max-width:290px;color:#55709e}.search input{border:0;outline:0;background:transparent;width:100%;min-width:0;color:var(--ink);font-size:13px}.theme-btn{border:1px solid #edf1f8;background:#fff;width:42px;height:42px;border-radius:50%;font-size:20px}.admin-link{border:0;color:#fff;background:linear-gradient(120deg,#0878ff,#8145f8);border-radius:24px;padding:13px 18px;font-weight:800;white-space:nowrap}.wrap{max-width:1540px;margin:auto;padding:0 18px}.hero{margin:0 0 18px;border-radius:16px;min-height:0;overflow:hidden;background:#06194b;color:#fff;display:block;position:relative;padding:0;box-shadow:0 8px 22px #0c36731a}.hero-banner img{display:block;width:100%;height:clamp(180px,21vw,300px);object-fit:cover;object-position:center 48%}.hero-copy{position:relative;z-index:1;max-width:730px}.hero-art{position:absolute;right:7%;top:0;height:100%;display:grid;align-content:center;font-size:230px;font-weight:200;color:#75d8ff55;line-height:.8}.hero-art span{font-size:24px;letter-spacing:8px;max-width:400px;color:#b6caff55;line-height:2}.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#ffffff1e;border:1px solid #ffffff22;border-radius:25px;padding:9px 15px;font-size:13px;margin-bottom:13px}.hero h1{font-size:clamp(32px,4vw,54px);line-height:1.04;letter-spacing:-1.8px;margin:0 0 12px;font-weight:900}.cyan{color:#4bdfff}.pink{color:#d37bff}.hero p{font-size:17px;line-height:1.55;color:#e2ebff;margin:0 0 17px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:13px}.btn-primary,.btn-outline,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;border-radius:12px;padding:12px 17px;font-weight:800;border:1px solid #59dfff;background:linear-gradient(110deg,#087eff,#9239f6);color:#fff;box-shadow:0 5px 18px #0878ff22}.btn-outline{background:#061d54aa;color:#fff}.btn-secondary{background:#fff;color:#1b3c72;border-color:#dbe5f6;box-shadow:none}.feature-row{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin:18px 2px}.feature{min-height:98px;display:flex;align-items:center;gap:12px;padding:15px;border-radius:15px;box-shadow:0 4px 15px #0c36730a}.blue{background:#e2f2ff}.pink-card{background:#ffebf5}.yellow{background:#fff5d9}.green{background:#dcfaed}.purple{background:#eee8ff}.feature-icon{height:52px;width:52px;flex:0 0 52px;border-radius:15px;display:grid;place-items:center;color:#fff;font-size:25px;font-weight:800;box-shadow:0 6px 12px #2448a322;background:#1685ff}.pink-card .feature-icon{background:#f33896}.yellow .feature-icon{background:#f7bc37}.green .feature-icon{background:#22bd8b}.purple .feature-icon{background:#8348f7}.feature strong{display:block;font-size:14px;margin-bottom:4px}.feature small{font-size:11px;line-height:1.4;color:#34476b}.section{background:#fff;border:1px solid #edf2fa;border-radius:16px;padding:18px 20px;margin:16px 2px;box-shadow:var(--shadow)}.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px}.section h2{font-size:21px;letter-spacing:-.5px;margin:0}.muted{color:var(--muted);font-size:13px;line-height:1.5}.tiny{font-size:11px}.text-link{color:#0878ff;font-weight:800;font-size:13px;white-space:nowrap}.tool-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:10px}.tool{border:1px solid #e4ebf8;border-radius:12px;background:#f8fbff;padding:12px 5px;text-align:center;min-height:94px;display:grid;align-content:center;justify-items:center;gap:8px}.tool b{width:39px;height:39px;border-radius:10px;background:linear-gradient(135deg,#148aff,#734bff);color:white;display:grid;place-items:center;font-size:19px}.tool:nth-child(3n) b{background:linear-gradient(135deg,#ff477d,#f62b5e)}.tool:nth-child(4n) b{background:linear-gradient(135deg,#0dc7a0,#19a877)}.tool span{font-size:11px;line-height:1.25;display:block;font-weight:750}.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.category{padding:20px 15px;border-radius:13px;display:grid;gap:6px;min-height:92px}.category strong{font-size:15px}.category small{font-size:12px}.c1{background:#e3f1ff;color:#1357bd}.c2{background:#f0e9ff;color:#6435c5}.c3{background:#ddf9ed;color:#087951}.c4{background:#fff1d8;color:#925900}.filters{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin:15px 0}.filters label,.field-label{display:grid;gap:6px;font-size:12px;font-weight:800;color:#3a5078}.filters input,.filters select,.field input,.field select,.field textarea{width:100%;min-width:0;border:1px solid #dce6f6;border-radius:10px;padding:11px;background:#fff;color:var(--ink);font-size:13px}.content-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.content-card{border:1px solid #e6edf8;border-radius:13px;padding:13px;background:linear-gradient(#fff,#f8fbff);min-width:0}.pill{display:inline-block;padding:4px 8px;border-radius:7px;color:#fff;background:#1685ff;font-size:10px;font-weight:800}.pill.orange{background:#ef941b}.formula{font-family:Georgia,serif;text-align:center;font-size:24px;padding:15px 0;color:#101d40;min-height:74px;display:grid;place-items:center}.content-card strong{font-size:13px;line-height:1.35;display:block}.content-card p{margin-bottom:0}.toolbar,.symbol-row{display:flex;flex-wrap:wrap;gap:7px;padding:10px;background:#f5f8ff;border:1px solid var(--line);border-radius:12px;margin:9px 0}.toolbar button,.symbol-row button{border:1px solid #e0e8f6;background:#fff;color:#15305d;border-radius:8px;padding:8px 10px;font-weight:750;font-size:12px}.symbol-row button{background:#f2edff;border-color:#e3d8ff;color:#6336ce}.editor{width:100%;min-height:230px;border:1px solid #dce6f6;border-radius:12px;padding:17px;outline-color:#3387ff;font-size:16px;line-height:1.7;background:#fff;color:#15284e}.editor:empty:before{content:attr(data-placeholder);color:#8a9bb8}.admin-layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:15px}.admin-menu{background:#101f4a;color:white;border-radius:14px;padding:13px;height:max-content}.admin-menu strong{display:block;padding:9px 10px 15px}.admin-menu button{display:block;width:100%;text-align:left;color:#dce7ff;background:transparent;border:0;border-radius:9px;padding:12px 10px;margin:3px 0;cursor:pointer}.admin-menu button.active,.admin-menu button:hover{background:#273e79;color:white}.admin-pane{min-width:0}.admin-pane[hidden]{display:none}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:14px}.stats>div{border:1px solid var(--line);border-radius:12px;padding:14px;background:#fbfdff;display:grid;gap:5px}.stats small{color:var(--muted)}.stats b{font-size:26px}.panel-inner{border:1px solid var(--line);border-radius:12px;padding:16px}.panel-inner h3{margin-top:0}.admin-fields .full{grid-column:1/-1}.field-label{margin:13px 0 6px}.admin-editor{min-height:300px}.notice{background:#fff8df;border:1px solid #ffe7a3;color:#795300;border-radius:10px;padding:12px;font-size:13px;line-height:1.5}.preview-box{border:1px solid var(--line);border-radius:12px;padding:18px;margin-top:16px;background:#fff}.manage-list article{border-bottom:1px solid var(--line);padding:12px 0}.manage-list article:last-child{border:0}.footer{padding:30px 18px 38px;text-align:center;color:#6d7fa2;font-size:12px;line-height:1.8}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#10214d;color:white;border-radius:12px;padding:12px 18px;box-shadow:0 10px 30px #00143b35;display:none;z-index:30;max-width:calc(100% - 30px)}.toast.show{display:block}.dark{--page:#0b1430;--ink:#eef4ff;--muted:#a5b7d9;--line:#293a60;--white:#111e3d}.dark .topbar,.dark .section,.dark .panel-inner,.dark .content-card,.dark .tool,.dark .stats>div{background:#142345;color:#edf3ff}.dark .search,.dark .filters input,.dark .filters select,.dark .editor{background:#0e1b38;color:#eef4ff;border-color:#30446c}.dark .toolbar,.dark .symbol-row{background:#111e3d}.dark .toolbar button,.dark .symbol-row button,.dark .theme-btn,.dark .btn-secondary{background:#1b2b4f;color:#edf3ff;border-color:#35486e}.dark .formula{color:#edf3ff}.dark .muted{color:#a5b7d9}
@media(max-width:1200px){.topbar{gap:10px;padding:12px 16px}.brand{min-width:auto}.brand-name{font-size:21px}.nav a{padding:10px 7px;font-size:12px}.search{max-width:220px}.tool-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.feature-row{grid-template-columns:repeat(3,minmax(0,1fr))}.content-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-art{right:2%;opacity:.7}}
@media(max-width:800px){html{scroll-padding-top:15px}.topbar{flex-wrap:wrap;position:relative}.brand{flex:1}.nav{order:5;overflow-x:auto;width:100%;flex-basis:100%;padding-bottom:2px}.search{order:4;max-width:none;flex-basis:100%}.hero-banner img{height:clamp(135px,34vw,220px);object-position:center 48%}.hero p{font-size:14px}.feature-row{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.feature{padding:12px;min-height:85px;gap:9px}.feature-icon{width:43px;height:43px;flex-basis:43px;font-size:21px}.feature strong{font-size:12px}.feature small{font-size:10px}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.filters{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-layout{grid-template-columns:1fr}.admin-menu{display:grid;grid-template-columns:repeat(2,1fr)}.admin-menu strong{grid-column:1/-1}.stats{grid-template-columns:repeat(3,minmax(0,1fr))}.stats>div{padding:10px}.stats b{font-size:20px}.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.section{padding:14px}.hero h1{font-size:34px}}
@media(max-width:430px){.feature-row{grid-template-columns:1fr}.feature{min-height:74px}.content-grid{grid-template-columns:1fr 1fr}.content-card{padding:9px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.filters{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr 1fr}.stats{grid-template-columns:1fr}.section h2{font-size:18px}.hero-banner img{height:145px;object-position:center 48%}.hero h1{font-size:30px}.admin-menu button{font-size:12px;padding:10px 7px}}
@media print{.topbar,.feature-row,.hero,.footer,.toolbar,.symbol-row,.actions,.admin-layout{display:none!important}body{background:#fff;color:#000}.section{box-shadow:none;border:0}.wrap{max-width:none}}

/* Production v1 additions */
.calculator-panel{margin-top:22px;padding:22px;border:1px solid var(--line, #dce5f5);border-radius:18px;background:var(--card, #fff)}
.calc-input{width:100%;box-sizing:border-box;padding:14px 16px;border:1px solid #b8c8e4;border-radius:12px;font:600 18px ui-monospace,monospace;margin:6px 0 12px;background:var(--surface,#fff);color:var(--text,#182746)}
.calc-buttons{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.calc-buttons button{min-height:42px}
.calc-result{padding:12px 14px;border-radius:10px;background:var(--soft,#f2f6ff);font-weight:700;overflow-wrap:anywhere}
.admin-login{max-width:520px;margin:0 0 18px;padding:20px;border:1px solid var(--line,#dce5f5);border-radius:16px}
.login-form{display:grid;gap:12px}.login-form label{display:grid;gap:5px;font-weight:600}.login-form input{padding:11px 12px;border:1px solid #b8c8e4;border-radius:10px;background:var(--surface,#fff);color:var(--text,#182746)}
.manage-list article{padding:14px 0;border-bottom:1px solid var(--line,#dce5f5)}
.manage-list article button{margin:4px 6px 4px 0}
#adminSessionActions{margin-bottom:18px}
@media(max-width:560px){.calc-buttons{grid-template-columns:repeat(4,minmax(0,1fr))}.calculator-panel{padding:15px}}
.content-modal{position:fixed;inset:0;z-index:1000;background:rgba(13,25,49,.72);padding:18px;display:grid;place-items:center;overflow:auto}
.content-modal[hidden]{display:none}.content-modal-card{position:relative;width:min(900px,100%);max-height:90vh;overflow:auto;padding:clamp(20px,4vw,40px);border-radius:20px;background:var(--card,#fff);color:var(--text,#182746);box-shadow:0 24px 90px #0004}.modal-close{position:sticky;float:right;top:0;border:0;border-radius:10px;padding:10px;cursor:pointer}.article-body{line-height:1.8;overflow-wrap:anywhere}.article-body img{max-width:100%;height:auto}.article-body table{max-width:100%;border-collapse:collapse}.article-body td,.article-body th{border:1px solid var(--line,#dce5f5);padding:6px}
[hidden]{display:none !important}
.tool{font:inherit;text-align:left;cursor:pointer;border:1px solid var(--line,#dce5f5);background:var(--card,#fff);color:var(--text,#182746);border-radius:15px;padding:17px;display:flex;align-items:center;gap:12px;transition:transform .15s,box-shadow .15s}.tool:hover{transform:translateY(-2px);box-shadow:0 8px 24px #274b8818}.tool b{font-size:23px;color:#3679ef}.tool-workspace{margin-top:20px;padding:20px;border:1px solid var(--line,#dce5f5);border-radius:18px;background:var(--card,#fff)}.tool-workspace-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.tool-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}.tool-fields label,.matrix-grid label{display:grid;gap:5px;font-weight:600}.tool-fields input,.tool-fields select,.matrix-grid input,.tool-pane>label input{min-width:0;box-sizing:border-box;width:100%;padding:10px;border:1px solid #b8c8e4;border-radius:9px;background:var(--surface,#fff);color:var(--text,#182746)}.matrix-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:14px 0}.graph-canvas{display:block;width:100%;height:auto;max-height:420px;margin-top:14px;border:1px solid var(--line,#dce5f5);border-radius:12px;background:#fff}.tool-pane{padding:8px 0}.tool-pane[hidden]{display:none}@media(max-width:560px){.matrix-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-workspace{padding:14px}}