:root{--navy:#102a43;--blue:#176b87;--teal:#168c82;--ink:#17324d;--muted:#60758a;--line:#d8e2e8;--paper:#fff;--bg:#f3f7f8;--danger:#b42318}
*{box-sizing:border-box}
body{margin:0;color:var(--ink);background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
button,input,select{font:inherit}
button{cursor:pointer}
h1,h2,h3,p{margin-top:0}
h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(34px,5vw,52px);line-height:1.02;letter-spacing:-.035em;color:var(--navy);margin-bottom:14px}
h2{font-size:23px;margin-bottom:0;color:var(--navy)}
h3{font-size:16px;color:var(--navy);margin:28px 0 10px}
.auth-shell{min-height:100vh;display:grid;place-items:center;padding:32px 18px;background:radial-gradient(circle at 12% 15%,rgba(35,161,155,.17),transparent 32%),linear-gradient(135deg,#0f2942,#163d58 56%,#176b72)}
.auth-card{width:min(100%,470px);padding:38px;border:1px solid rgba(255,255,255,.55);border-radius:24px;background:rgba(255,255,255,.97);box-shadow:0 28px 70px rgba(4,23,39,.27)}
.intro-card{width:min(1120px,100%);display:grid;grid-template-columns:minmax(0,1.18fr) minmax(390px,.82fr);overflow:hidden;border:1px solid rgba(255,255,255,.5);border-radius:26px;background:#fff;box-shadow:0 28px 75px rgba(4,23,39,.32)}
.intro-visual{position:relative;min-height:610px;background:#07181c}
.intro-visual img{width:100%;height:100%;object-fit:cover;object-position:center}
.intro-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(to top,rgba(4,17,26,.88),transparent 54%);pointer-events:none}
.visual-caption{position:absolute;z-index:1;left:34px;right:34px;bottom:30px;color:#fff}
.visual-caption span{display:block;margin-bottom:8px;color:#75e5dd;font-size:11px;font-weight:850;letter-spacing:.14em;text-transform:uppercase}
.visual-caption strong{display:block;font-family:Georgia,"Times New Roman",serif;font-size:28px;letter-spacing:-.02em}
.lab-card{width:100%;border:0;border-radius:0;box-shadow:none;display:flex;flex-direction:column;justify-content:center}
.brand-mark,.mini-mark{display:inline-grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--blue),var(--teal));font-weight:800}
.brand-mark{width:52px;height:52px;border-radius:15px;margin-bottom:22px}
.mini-mark{width:34px;height:34px;border-radius:10px;margin-right:10px;font-size:13px}
.eyebrow{margin:0 0 8px;text-transform:uppercase;letter-spacing:.12em;font-size:12px;color:var(--teal);font-weight:800}
.lede,.section-copy{color:var(--muted);line-height:1.55}
.auth-form{display:grid;gap:18px;margin-top:25px}
label{display:grid;gap:8px;color:var(--navy);font-size:13px;font-weight:750}
input,select{width:100%;padding:13px 14px;border:1px solid #bdccd5;border-radius:10px;background:#fff;color:var(--navy);outline:none}
input:focus,select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(22,140,130,.14)}
.auth-form button,.secondary{border:0;border-radius:10px;font-weight:800}
.auth-form button{padding:14px 18px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--teal));box-shadow:0 8px 22px rgba(23,107,135,.2)}
.error{margin:18px 0 -4px;padding:11px 13px;border-radius:9px;background:#fff1f0;color:var(--danger);font-size:13px}
.demo-note{margin:22px 0 8px;padding:11px 13px;border-radius:9px;background:#edf8f6;color:#255d5a;font-size:13px}
.fine-print{color:#7a8b99;font-size:11px;line-height:1.5;margin-bottom:0}
.step-indicator{display:flex;align-items:center;margin-bottom:30px}
.step-indicator span{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;background:#e6eef2;color:#63778a;font-size:12px;font-weight:800}
.step-indicator span.done,.step-indicator span:nth-of-type(2){background:var(--teal);color:#fff}
.step-indicator i{flex:1;height:2px;background:#d8e4e8}
.topbar{min-height:66px;padding:0 clamp(18px,4vw,54px);display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff;border-bottom:1px solid var(--line)}
.topbar>div,.session{display:flex;align-items:center}
.session{gap:16px;color:var(--muted);font-size:13px}
.session span+span{border-left:1px solid var(--line);padding-left:16px}
.text-button{border:0;background:transparent;color:var(--blue);font-weight:750;padding:6px}
.domain-content{width:min(1440px,100%);margin:0 auto;padding:38px clamp(16px,4vw,54px) 64px}
.hero-panel{display:flex;justify-content:space-between;align-items:end;gap:32px;padding:34px;border-radius:20px;color:#e8f6f6;background:linear-gradient(120deg,#102f49,#185a6f 65%,#168c82);box-shadow:0 18px 45px rgba(16,42,67,.13)}
.hero-panel h1{color:#fff;margin-bottom:12px}
.hero-panel p:not(.eyebrow){max-width:760px;margin-bottom:0;line-height:1.55;color:#d7e9ec}
.hero-panel .eyebrow{color:#78ded3}
.age-select{width:235px;flex:0 0 auto;color:#fff}
.age-select select{color:var(--navy)}
.workspace-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px;margin-top:22px}
.entry-card,.results-card,.reference-section,.score-card{border:1px solid var(--line);border-radius:16px;background:var(--paper);box-shadow:0 7px 24px rgba(16,42,67,.05)}
.entry-card,.results-card,.reference-section{padding:25px}
.section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:8px}
.section-heading span{display:block;color:var(--teal);font-size:11px;text-transform:uppercase;letter-spacing:.12em;font-weight:850;margin-bottom:5px}
.secondary{padding:9px 12px;background:#e8f5f4;color:#176e68;font-size:12px}
.score-card{display:flex;flex-direction:column;padding:26px;color:#fff;background:linear-gradient(145deg,#173f5c,#176b72)}
.score-label{text-transform:uppercase;letter-spacing:.12em;font-size:11px;color:#bde8e2;font-weight:800}
.score-card>strong{font-family:Georgia,serif;font-size:84px;line-height:1;margin:16px 0 8px}
.score-card>p{color:#d8ecec;font-size:13px;line-height:1.5}
.tier-key{margin-top:auto;display:grid;grid-template-columns:1fr 1fr;gap:9px;font-size:11px;color:#d9e7e9}
.tier-key span{display:flex;align-items:center;gap:6px}
.tier-key i{width:8px;height:8px;border-radius:50%}
.t0{background:#4ad39b}
.t1{background:#f5cf58}
.t2{background:#f29a4a}
.t3{background:#f06a6a}
.results-card,.reference-section{margin-top:22px}
.table-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{padding:12px 13px;border-bottom:1px solid #e4ebef;text-align:left;vertical-align:middle}
thead th{background:#f0f6f7;color:#486176;font-size:11px;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
tbody th{color:var(--navy);font-weight:800;white-space:nowrap}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
  .input-table input{width:92px;min-width:92px;padding:10px}
  .input-table input[readonly]{background:#edf2f4;color:#344f62;font-weight:800;cursor:not-allowed}
.measurement-entry{display:flex;align-items:center;gap:7px;white-space:nowrap}
.measurement-entry>span{color:#5f7386;font-size:11px;font-weight:750}
.adult-input{display:grid;grid-template-columns:auto auto;align-items:center;justify-content:start;gap:6px 14px;min-width:290px}
.adult-input small{grid-column:1/-1;color:#718496;font-size:10px;font-weight:650}
.range-status{display:grid;justify-items:center;gap:2px;font-size:9px;font-weight:850;letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.range-status b{width:25px;height:25px;display:inline-grid;place-items:center;border:2px solid currentColor;border-radius:5px;font-size:19px;line-height:1}
.range-ok{color:#14744c}
.range-bad{color:var(--danger)}
.formula{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#52697c;font-size:12px}
.pill{display:inline-block;padding:5px 8px;border-radius:999px;font-size:11px;font-weight:800;white-space:nowrap}
.tier-0{background:#e5f8ef;color:#14744c}
.tier-1{background:#fff7d7;color:#806300}
.tier-2{background:#fff0df;color:#995000}
.tier-3{background:#ffebea;color:#a62b22}
.neutral{background:#eef2f4;color:#627483}
  .method-note{margin:16px 0 0;padding:11px 13px;border-left:3px solid var(--teal);background:#f4f9f9;color:#5a7182;font-size:12px;line-height:1.5}
  .score-inclusion-note{margin-top:5px}
.aggregation-rules{margin-top:18px;padding:16px 18px;border:1px solid var(--line);border-radius:12px;background:#fbfdfd;color:#52697c;font-size:12px;line-height:1.55}
.aggregation-rules h3{margin:0 0 8px;font-size:15px}
.aggregation-rules p{margin-bottom:9px}
.aggregation-rules ul{margin:8px 0 10px;padding-left:22px}
.aggregation-rules li+li{margin-top:5px}
.composite-row th,.composite-row td{background:#f4f9f9;border-top:2px solid #b9ddd9;border-bottom:2px solid #b9ddd9}
.composite-row th{color:#126d67}
.development-table+.development-table{border-top:1px solid var(--line);margin-top:28px;padding-top:2px}
@media(max-width:850px){.intro-card{grid-template-columns:1fr;max-width:610px}
.intro-visual{min-height:300px;max-height:360px}
.workspace-grid{grid-template-columns:1fr}
.hero-panel{align-items:stretch;flex-direction:column}
.age-select{width:100%}
.score-card{min-height:260px}
.topbar{align-items:flex-start;padding-top:14px;padding-bottom:14px}
.session{flex-wrap:wrap;justify-content:flex-end}
.topbar strong{display:none}
}
@media(max-width:560px){.auth-card{padding:28px 22px}
.intro-visual{min-height:230px}
.visual-caption{left:22px;right:22px;bottom:18px}
.visual-caption strong{font-size:22px}
.domain-content{padding-top:18px}
.hero-panel,.entry-card,.results-card,.reference-section{padding:19px}
.section-heading{align-items:flex-start;flex-direction:column}
.session span{display:none}
th,td{padding:10px}
.topbar{min-height:58px}
}
@media print{.topbar,.auth-shell button,.secondary{display:none}
.domain-content{padding:0}
.hero-panel{box-shadow:none}
.entry-card,.results-card,.reference-section,.score-card{box-shadow:none;break-inside:avoid}
}