/* DyeFlow Lab — design system
 * Palette: deep navy, royal blue, purple, turquoise, cyan.
 * Tokens on :root, dark mode via prefers-color-scheme or [data-theme].
 */
@font-face{font-family:"Inter";src:url("../fonts/inter-var.woff2") format("woff2");font-weight:100 900;font-display:swap}
@font-face{font-family:"Space Grotesk";src:url("../fonts/space-grotesk-var.woff2") format("woff2");font-weight:300 700;font-display:swap}

:root{
  --navy-950:#050a1f;--navy-900:#0a1230;--navy-800:#111c46;--royal:#2f4fe0;--royal-2:#4a6bff;--purple:#7b4fe0;--purple-2:#a27bff;
  --turquoise:#13b5a3;--cyan:#16c6e8;--amber:#f2a33a;--rose:#ef5a7a;--green:#1fb57a;

  --bg:#f3f5fc;--bg-2:#e9eefb;--surface:rgba(255,255,255,.78);--surface-solid:#ffffff;--surface-2:rgba(244,246,253,.9);
  --text:#0d1433;--text-2:#38425f;--muted:#5d6888;--line:rgba(13,20,51,.10);--line-strong:rgba(13,20,51,.18);
  --glass-border:rgba(255,255,255,.7);--shadow:0 1px 2px rgba(10,18,48,.05),0 12px 32px -12px rgba(22,36,96,.18);
  --shadow-lg:0 30px 60px -24px rgba(22,36,96,.32);
  --accent:var(--royal);--accent-text:#2443c9;--focus:#4a6bff;
  --grad-brand:linear-gradient(120deg,var(--royal) 0%,var(--purple) 52%,var(--cyan) 100%);
  --grad-cool:linear-gradient(135deg,var(--turquoise),var(--cyan));
  --grad-hero:radial-gradient(1200px 520px at 85% -10%,rgba(123,79,224,.22),transparent 60%),radial-gradient(900px 480px at -10% 10%,rgba(22,198,232,.20),transparent 60%),radial-gradient(800px 400px at 50% 110%,rgba(47,79,224,.14),transparent 60%);
  --warn-bg:#fff4dc;--warn-text:#6c4a0d;--warn-line:#f1d08a;--info-bg:#e8f1ff;--info-text:#1d3d8f;--ok-bg:#e3f8ef;--ok-text:#0f6d48;--err-text:#b4233f;
  --chart-grid:rgba(13,20,51,.09);--chart-axis:#68738f;--c1:#2f4fe0;--c2:#13b5a3;--c3:#7b4fe0;--c4:#16c6e8;--c5:#f2a33a;--c6:#ef5a7a;
  --radius:18px;--radius-sm:12px;--radius-lg:26px;
  --font:"Inter","Segoe UI Variable","Segoe UI",system-ui,-apple-system,sans-serif;--font-display:"Space Grotesk","Inter",system-ui,sans-serif;--mono:ui-monospace,"Cascadia Code","SF Mono",Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#060a1c;--bg-2:#0b1230;--surface:rgba(18,27,64,.62);--surface-solid:#111a40;--surface-2:rgba(14,22,54,.8);
    --text:#e9edff;--text-2:#c3cbea;--muted:#97a3c9;--line:rgba(160,180,255,.12);--line-strong:rgba(160,180,255,.22);
    --glass-border:rgba(140,160,255,.14);--shadow:0 1px 2px rgba(0,0,0,.3),0 16px 40px -16px rgba(0,0,0,.6);--shadow-lg:0 30px 70px -20px rgba(0,0,0,.7);
    --accent:#6f8bff;--accent-text:#9fb2ff;--focus:#8ea3ff;
    --grad-hero:radial-gradient(1200px 520px at 85% -10%,rgba(123,79,224,.30),transparent 60%),radial-gradient(900px 480px at -10% 10%,rgba(22,198,232,.18),transparent 60%),radial-gradient(800px 400px at 50% 110%,rgba(47,79,224,.22),transparent 60%);
    --warn-bg:rgba(242,163,58,.13);--warn-text:#ffd28c;--warn-line:rgba(242,163,58,.35);--info-bg:rgba(74,107,255,.14);--info-text:#bccaff;--ok-bg:rgba(31,181,122,.14);--ok-text:#7fe3b7;--err-text:#ff8aa3;
    --chart-grid:rgba(160,180,255,.12);--chart-axis:#93a0c6;--c1:#7a95ff;--c2:#2ee0c8;--c3:#b48cff;--c4:#4fd9f5;--c5:#ffbd5c;--c6:#ff7d99;
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#060a1c;--bg-2:#0b1230;--surface:rgba(18,27,64,.62);--surface-solid:#111a40;--surface-2:rgba(14,22,54,.8);
  --text:#e9edff;--text-2:#c3cbea;--muted:#97a3c9;--line:rgba(160,180,255,.12);--line-strong:rgba(160,180,255,.22);
  --glass-border:rgba(140,160,255,.14);--shadow:0 1px 2px rgba(0,0,0,.3),0 16px 40px -16px rgba(0,0,0,.6);--shadow-lg:0 30px 70px -20px rgba(0,0,0,.7);
  --accent:#6f8bff;--accent-text:#9fb2ff;--focus:#8ea3ff;
  --grad-hero:radial-gradient(1200px 520px at 85% -10%,rgba(123,79,224,.30),transparent 60%),radial-gradient(900px 480px at -10% 10%,rgba(22,198,232,.18),transparent 60%),radial-gradient(800px 400px at 50% 110%,rgba(47,79,224,.22),transparent 60%);
  --warn-bg:rgba(242,163,58,.13);--warn-text:#ffd28c;--warn-line:rgba(242,163,58,.35);--info-bg:rgba(74,107,255,.14);--info-text:#bccaff;--ok-bg:rgba(31,181,122,.14);--ok-text:#7fe3b7;--err-text:#ff8aa3;
  --chart-grid:rgba(160,180,255,.12);--chart-axis:#93a0c6;--c1:#7a95ff;--c2:#2ee0c8;--c3:#b48cff;--c4:#4fd9f5;--c5:#ffbd5c;--c6:#ff7d99;
  color-scheme:dark;
}

/* ---------- Base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font-family:var(--font);font-size:16px;line-height:1.6;color:var(--text);background:var(--bg);background-image:var(--grad-hero);background-attachment:fixed;overflow-x:hidden;transition:background-color .3s,color .3s}
h1,h2,h3,h4{font-family:var(--font-display);line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em;color:var(--text)}
h1{font-size:clamp(2.3rem,5.2vw,4.1rem);font-weight:700}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem);font-weight:700}
h3{font-size:1.2rem;font-weight:650}
h4{font-size:1rem;font-weight:650}
p{margin:0 0 1em;color:var(--text-2)}
a{color:var(--accent-text);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{text-decoration-thickness:2px}
img,svg{max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
[hidden]{display:none!important}
code,kbd{font-family:var(--mono);font-size:.9em;background:var(--surface-2);border:1px solid var(--line);border-radius:6px;padding:.08em .38em}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:var(--surface-solid);color:var(--text);padding:10px 16px;border-radius:10px;box-shadow:var(--shadow);transition:top .2s}
.skip-link:focus{top:12px}
.icon{width:1.15em;height:1.15em;flex:none;vertical-align:-.18em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.container{width:min(1200px,100% - 32px);margin-inline:auto}
.gradient-text{background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Research banner + header ---------- */
.research-banner{display:flex;align-items:center;justify-content:center;gap:10px;padding:8px 16px;font-size:.82rem;line-height:1.4;text-align:center;background:var(--warn-bg);color:var(--warn-text);border-bottom:1px solid var(--warn-line)}
.research-banner .pulse{width:8px;height:8px;border-radius:50%;background:var(--amber);flex:none;box-shadow:0 0 0 0 rgba(242,163,58,.6);animation:pulse 2.4s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(242,163,58,.55)}70%{box-shadow:0 0 0 9px rgba(242,163,58,0)}100%{box-shadow:0 0 0 0 rgba(242,163,58,0)}}
.site-header{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.6) blur(16px);-webkit-backdrop-filter:saturate(1.6) blur(16px);background:color-mix(in srgb,var(--bg) 72%,transparent);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:20px;min-height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text);font-family:var(--font-display);font-weight:700;font-size:1.22rem;letter-spacing:-.02em;flex:none}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:0 8px 20px -8px rgba(47,79,224,.7)}
.brand-mark svg{width:26px;height:26px}
.brand small{display:block;font-family:var(--font);font-size:.62rem;font-weight:600;letter-spacing:.14em;color:var(--muted);margin-top:-2px}
.brand b{background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.site-nav{margin-left:auto}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:2px;align-items:center}
.site-nav a{display:block;padding:8px 12px;border-radius:10px;color:var(--text-2);text-decoration:none;font-size:.92rem;font-weight:550;white-space:nowrap;transition:background .2s,color .2s}
.site-nav a:hover{background:var(--surface-2);color:var(--text)}
.site-nav a[aria-current="page"]{color:var(--accent-text);background:color-mix(in srgb,var(--accent) 12%,transparent)}
.header-actions{display:flex;gap:8px;align-items:center}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--text);transition:transform .15s,background .2s}
.icon-btn:hover{background:var(--surface-2);transform:translateY(-1px)}
.icon-btn .icon{width:20px;height:20px}
.theme-toggle .moon{display:none}
:root[data-theme="dark"] .theme-toggle .sun{display:none}
:root[data-theme="dark"] .theme-toggle .moon{display:block}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .theme-toggle .sun{display:none}:root:not([data-theme="light"]) .theme-toggle .moon{display:block}}
.nav-toggle{display:none}
@media (max-width:1060px){
  .nav-toggle{display:inline-grid}
  .site-nav{position:fixed;inset:var(--nav-top,106px) 0 auto 0;margin:0;background:var(--surface-solid);border-bottom:1px solid var(--line);box-shadow:var(--shadow-lg);padding:10px 16px 18px;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-height:calc(100vh - 110px);overflow:auto}
  .site-nav.open{opacity:1;transform:none;pointer-events:auto}
  .site-nav ul{flex-direction:column;align-items:stretch}
  .site-nav a{padding:12px 14px;font-size:1rem}
  .header-actions{margin-left:auto}
}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 20px;border-radius:14px;border:1px solid transparent;font-weight:650;font-size:.95rem;text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .2s,background .2s,opacity .2s;white-space:nowrap}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-primary{background:var(--grad-brand);background-size:160% 100%;color:#fff;box-shadow:0 12px 26px -12px rgba(47,79,224,.8)}
.btn-primary:hover{background-position:100% 0;box-shadow:0 16px 30px -12px rgba(123,79,224,.8)}
.btn-secondary{background:var(--surface);border-color:var(--line-strong);color:var(--text)}
.btn-secondary:hover{background:var(--surface-2)}
.btn-ghost{background:transparent;color:var(--accent-text);padding:0 12px}
.btn-sm{min-height:38px;padding:0 14px;font-size:.88rem;border-radius:11px}
.btn-row{display:flex;flex-wrap:wrap;gap:10px}

/* ---------- Cards / glass ---------- */
.glass{background:var(--surface);border:1px solid var(--glass-border);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4)}
.card{padding:24px}
.card-header{display:flex;align-items:flex-start;gap:14px;margin-bottom:18px}
.card-header h2,.card-header h3{margin:0}
.card-header p{margin:2px 0 0;font-size:.9rem;color:var(--muted)}
.card-icon{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;flex:none;color:#fff;background:var(--grad-brand)}
.card-icon.cool{background:var(--grad-cool)}
.card-icon.purple{background:linear-gradient(135deg,var(--purple),var(--royal-2))}
.card-icon.amber{background:linear-gradient(135deg,#f6b54d,#ef7a5a)}
.card-icon .icon{width:22px;height:22px}

/* ---------- Page sections ---------- */
main{display:block}
.section{padding:72px 0}
.section-tight{padding:40px 0}
.kicker{display:inline-flex;align-items:center;gap:8px;font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-text);margin-bottom:12px}
.kicker::before{content:"";width:18px;height:2px;border-radius:2px;background:var(--grad-brand)}
.section-head{max-width:720px;margin-bottom:36px}
.section-head p{font-size:1.06rem}
.page-hero{padding:56px 0 24px}
.page-hero p.lead{font-size:1.12rem;max-width:760px}
.lead{font-size:1.15rem;color:var(--text-2)}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:960px){.grid-3,.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.section{padding:52px 0}}

/* ---------- Home hero ---------- */
.hero{padding:64px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.hero h1 em{font-style:normal;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{max-width:560px}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0 28px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;font-size:.82rem;font-weight:600;background:var(--surface);border:1px solid var(--line);color:var(--text-2)}
.chip .icon{color:var(--turquoise)}
.chip-warn{background:var(--warn-bg);color:var(--warn-text);border-color:var(--warn-line)}
.chip-info{background:var(--info-bg);color:var(--info-text);border-color:transparent}
.chip-ok{background:var(--ok-bg);color:var(--ok-text);border-color:transparent}
.hero-visual{position:relative;aspect-ratio:1/0.86;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(160deg,#0a1235,#13174a 55%,#1d1360);box-shadow:var(--shadow-lg);border:1px solid rgba(140,160,255,.18)}
.hero-visual svg{position:absolute;inset:0;width:100%;height:100%}
.hero-visual .caption{position:absolute;left:16px;bottom:14px;right:16px;display:flex;justify-content:space-between;gap:8px;font-size:.75rem;color:#b9c4ee;letter-spacing:.04em}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr}.hero{padding-top:40px}}

/* Animated illustration */
.dye-particle{animation:drift 6s ease-in-out infinite}
.dye-particle:nth-of-type(2n){animation-duration:7.5s;animation-delay:-2s}
.dye-particle:nth-of-type(3n){animation-duration:5.2s;animation-delay:-3.4s}
@keyframes drift{0%{transform:translate(0,0);opacity:0}15%{opacity:1}80%{opacity:1}100%{transform:translate(var(--dx,150px),var(--dy,10px));opacity:0}}
.wave-path{animation:wave 7s linear infinite}
@keyframes wave{to{transform:translateX(-200px)}}
.fiber-glow{animation:glow 4s ease-in-out infinite}
@keyframes glow{0%,100%{opacity:.35}50%{opacity:.9}}
.uptake-line{stroke-dasharray:600;stroke-dashoffset:600;animation:draw 3.2s ease-out .4s forwards}
@keyframes draw{to{stroke-dashoffset:0}}
.float{animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}.uptake-line{stroke-dashoffset:0}}

/* ---------- Feature / stat blocks ---------- */
.feature{padding:26px;transition:transform .2s,box-shadow .2s}
.feature:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.feature h3{margin-top:16px}
.feature p{font-size:.95rem;margin:0}
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.stat{padding:20px 22px}
.stat strong{display:block;font-family:var(--font-display);font-size:1.6rem;letter-spacing:-.02em}
.stat span{font-size:.86rem;color:var(--muted)}
@media (max-width:860px){.stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}}
.steps{counter-reset:step;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.step{position:relative;padding:26px}
.step::before{counter-increment:step;content:"0" counter(step);font-family:var(--font-display);font-weight:700;font-size:.9rem;color:var(--accent-text);display:block;margin-bottom:12px}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.cta-band{padding:40px;border-radius:var(--radius-lg);background:linear-gradient(120deg,#13207a,#4b2aa8 55%,#0e8fa8);color:#fff;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap;box-shadow:var(--shadow-lg)}
.cta-band h2{color:#fff;margin-bottom:6px}
.cta-band p{color:#dbe2ff;margin:0}
.cta-band .btn-secondary{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.35);color:#fff}

/* ---------- Notices ---------- */
.notice{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:var(--radius-sm);font-size:.92rem;line-height:1.5;margin:0 0 16px}
.notice .icon{margin-top:2px;width:20px;height:20px}
.notice p{margin:0;color:inherit}
.notice strong{display:block}
.notice-warn{background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-line)}
.notice-info{background:var(--info-bg);color:var(--info-text)}
.notice-ok{background:var(--ok-bg);color:var(--ok-text)}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 16px}
.form-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field.wide{grid-column:1/-1}
.field label,.field .label{font-size:.86rem;font-weight:620;color:var(--text)}
.field .unit{font-weight:500;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;min-height:46px;padding:10px 13px;border-radius:12px;border:1px solid var(--line-strong);background:var(--surface-solid);color:var(--text);transition:border-color .15s,box-shadow .15s}
.field textarea{min-height:130px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 22%,transparent)}
.field input[readonly]{background:var(--surface-2);color:var(--muted)}
.field .hint{font-size:.78rem;color:var(--muted);line-height:1.4}
.field .err{font-size:.8rem;color:var(--err-text);font-weight:600;min-height:0}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--err-text)}
.field.record-only label::after{content:" · record only";font-weight:500;color:var(--muted);font-size:.78rem}
.form-section-title{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:10px;margin:8px 0 0;padding-top:12px;border-top:1px dashed var(--line-strong);font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.form-section-title:first-child{border-top:0;padding-top:0;margin-top:0}
.form-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;align-items:center}
.form-error{color:var(--err-text);font-weight:600;font-size:.9rem;margin:12px 0 0;min-height:1.2em}
@media (max-width:640px){.form-grid,.form-grid.cols-3{grid-template-columns:1fr}}

.tabs{display:inline-flex;gap:4px;padding:5px;border-radius:14px;background:var(--surface-2);border:1px solid var(--line);margin-bottom:18px;flex-wrap:wrap}
.tabs button{border:0;background:transparent;padding:9px 16px;border-radius:10px;font-weight:620;font-size:.9rem;color:var(--muted)}
.tabs button[aria-selected="true"]{background:var(--surface-solid);color:var(--text);box-shadow:var(--shadow)}

/* ---------- Layouts for tools ---------- */
.tool-layout{display:grid;grid-template-columns:minmax(0,440px) minmax(0,1fr);gap:22px;align-items:start}
.tool-layout>.sticky{position:sticky;top:90px}
@media (max-width:1020px){.tool-layout{grid-template-columns:1fr}.tool-layout>.sticky{position:static}}

/* ---------- KPI cards ---------- */
.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px}
.kpi{position:relative;padding:18px 18px 16px;border-radius:16px;background:var(--surface-solid);border:1px solid var(--line);overflow:hidden}
.kpi::before{content:"";position:absolute;inset:0 auto 0 0;width:4px;background:var(--kpi-color,var(--royal))}
.kpi .label{font-size:.8rem;font-weight:650;color:var(--muted);display:flex;align-items:center;gap:6px}
.kpi .value{display:block;font-family:var(--font-display);font-size:2rem;font-weight:700;letter-spacing:-.03em;margin:4px 0 2px;color:var(--text)}
.kpi .sub{font-size:.8rem;color:var(--muted);line-height:1.4}
.kpi .bar{height:6px;border-radius:6px;background:var(--line);margin-top:10px;overflow:hidden}
.kpi .bar span{display:block;height:100%;width:0;border-radius:inherit;background:var(--kpi-color,var(--royal));transition:width .8s cubic-bezier(.2,.8,.2,1)}
.kpi.k-blue{--kpi-color:var(--c1)}.kpi.k-teal{--kpi-color:var(--c2)}.kpi.k-purple{--kpi-color:var(--c3)}.kpi.k-cyan{--kpi-color:var(--c4)}.kpi.k-amber{--kpi-color:var(--c5)}

.status-pill{display:inline-flex;align-items:center;gap:7px;padding:5px 11px;border-radius:999px;font-size:.78rem;font-weight:700;letter-spacing:.02em}
.status-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.status-research{background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-line)}
.status-validated{background:var(--ok-bg);color:var(--ok-text)}

/* ---------- Charts ---------- */
.chart-card{padding:22px}
.chart-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.chart-head h3{margin:0}
.chart-head p{margin:2px 0 0;font-size:.88rem;color:var(--muted)}
.chart{position:relative;width:100%}
.chart svg{display:block;width:100%;height:auto;overflow:visible}
.chart .grid-line{stroke:var(--chart-grid);stroke-width:1}
.chart .axis-text{fill:var(--chart-axis);font-size:11px;font-family:var(--font)}
.chart .axis-title{fill:var(--chart-axis);font-size:11px;font-weight:600;font-family:var(--font)}
.chart .series-line{fill:none;stroke-width:2.6;stroke-linejoin:round;stroke-linecap:round}
.chart .series-area{opacity:.14}
.chart .stack-area{opacity:.85}
.chart .end-dot{stroke:var(--surface-solid);stroke-width:2}
.chart .hover-line{stroke:var(--chart-axis);stroke-dasharray:3 4;opacity:0}
.chart .hover-dot{opacity:0;stroke:var(--surface-solid);stroke-width:2}
.chart.hovering .hover-line,.chart.hovering .hover-dot{opacity:1}
.chart .tooltip{position:absolute;pointer-events:none;z-index:5;min-width:150px;padding:10px 12px;border-radius:12px;background:var(--surface-solid);border:1px solid var(--line-strong);box-shadow:var(--shadow-lg);font-size:.8rem;line-height:1.5;opacity:0;transform:translateY(4px);transition:opacity .12s,transform .12s}
.chart.hovering .tooltip{opacity:1;transform:none}
.chart .tooltip b{display:block;margin-bottom:2px;font-size:.78rem;color:var(--muted);font-weight:600}
.chart .tooltip .row{display:flex;align-items:center;gap:7px;justify-content:space-between}
.chart .tooltip .row span{display:inline-flex;align-items:center;gap:6px;color:var(--text-2)}
.chart .tooltip i{width:9px;height:9px;border-radius:3px;display:inline-block}
.chart-empty{display:grid;place-items:center;min-height:220px;color:var(--muted);font-size:.92rem;text-align:center;padding:20px}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.84rem;color:var(--text-2);margin:0;padding:0;list-style:none}
.legend li{display:inline-flex;align-items:center;gap:7px}
.legend i{width:14px;height:4px;border-radius:3px;display:inline-block}
.s1{stroke:var(--c1);fill:var(--c1);background:var(--c1)}.s2{stroke:var(--c2);fill:var(--c2);background:var(--c2)}.s3{stroke:var(--c3);fill:var(--c3);background:var(--c3)}.s4{stroke:var(--c4);fill:var(--c4);background:var(--c4)}.s5{stroke:var(--c5);fill:var(--c5);background:var(--c5)}.s6{stroke:var(--c6);fill:var(--c6);background:var(--c6)}
.chart-foot{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;font-size:.78rem;color:var(--muted);margin-top:8px}
details.data-table{margin-top:12px;font-size:.88rem}
details.data-table summary{cursor:pointer;color:var(--accent-text);font-weight:600}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--surface-solid)}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.76rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700;background:var(--surface-2)}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.pass{color:var(--ok-text);font-weight:700}.fail{color:var(--err-text);font-weight:700}

/* ---------- Explanations ---------- */
.explain{padding:22px;border-radius:var(--radius);background:linear-gradient(135deg,color-mix(in srgb,var(--royal) 9%,transparent),color-mix(in srgb,var(--cyan) 9%,transparent));border:1px solid var(--line)}
.explain ul{margin:0;padding-left:1.2em}
.explain li{margin:.35em 0;color:var(--text-2)}
.compare-box{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.compare-box>div{padding:18px;border-radius:14px;border:1px solid var(--line);background:var(--surface-solid)}
.compare-box h4{display:flex;align-items:center;gap:8px}
@media (max-width:640px){.compare-box{grid-template-columns:1fr}}

/* ---------- Math ---------- */
.math{font-family:"Cambria Math","STIX Two Math","Latin Modern Math",Cambria,Georgia,serif;font-size:1.12rem;padding:16px 18px;border-radius:14px;background:var(--surface-solid);border:1px solid var(--line);overflow-x:auto;line-height:2;color:var(--text)}
.math var{font-style:italic}
.math .eq{display:block;white-space:nowrap}
.math .lbl{float:right;font-family:var(--font);font-size:.8rem;color:var(--muted);margin-left:16px}
.frac{display:inline-flex;flex-direction:column;vertical-align:middle;text-align:center;font-size:.92em;line-height:1.15;margin:0 2px}
.frac>span:first-child{border-bottom:1px solid currentColor;padding:0 3px}
.prose{max-width:820px}
.prose h2{margin-top:1.6em}.prose h3{margin-top:1.4em}
.prose ul,.prose ol{padding-left:1.3em;color:var(--text-2)}
.prose li{margin:.35em 0}
.toc{position:sticky;top:96px;padding:20px;font-size:.9rem}
.toc ol{margin:0;padding-left:1.1em}
.toc a{color:var(--text-2);text-decoration:none}
.toc a:hover{color:var(--accent-text)}
.doc-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start}
@media (max-width:900px){.doc-layout{grid-template-columns:1fr}.toc{position:static}}

/* ---------- Footer ---------- */
.site-footer{margin-top:72px;padding:48px 0 32px;border-top:1px solid var(--line);background:color-mix(in srgb,var(--bg-2) 60%,transparent)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px}
.site-footer h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:6px 0}
.site-footer a{color:var(--text-2);text-decoration:none;font-size:.92rem}
.site-footer a:hover{color:var(--accent-text)}
.footer-note{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:.8rem;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr}}

/* ---------- Utility ---------- */
.mt-0{margin-top:0}.mt-1{margin-top:8px}.mt-2{margin-top:16px}.mt-3{margin-top:24px}.mt-4{margin-top:36px}.mb-0{margin-bottom:0}
.muted{color:var(--muted)}.small{font-size:.86rem}
.stack>*+*{margin-top:20px}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);z-index:90;padding:12px 18px;border-radius:12px;background:var(--navy-900);color:#fff;font-size:.9rem;box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.spinner{width:16px;height:16px;border-radius:50%;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.dl-grid{display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:.9rem;margin:0}
.dl-grid dt{color:var(--muted)}
.dl-grid dd{margin:0;font-variant-numeric:tabular-nums;color:var(--text);overflow-wrap:anywhere}

/* ---------- Print ---------- */
@media print{
  :root{--bg:#fff;--surface:#fff;--surface-solid:#fff;--text:#000;--text-2:#222;--muted:#444;--line:#ccc}
  body{background:#fff}
  .site-header,.site-footer,.no-print,.skip-link,.nav-toggle,.btn,.toast{display:none!important}
  .glass{box-shadow:none;backdrop-filter:none;border-color:#ccc}
  .research-banner{border:1px solid #c90;color:#000;background:#fff}
  .chart-card,.kpi{break-inside:avoid}
}

/* ---------- Additions ---------- */
.h3{font-size:1.2rem}
.dp1{--dx:150px;--dy:-30px}.dp2{--dx:140px;--dy:20px}.dp3{--dx:160px;--dy:-10px}.dp4{--dx:130px;--dy:-40px}.dp5{--dx:170px;--dy:30px}.dp6{--dx:150px;--dy:5px}
label.btn{user-select:none}
details>summary{cursor:pointer}
.explain h3{display:flex;align-items:center;gap:8px}
.glass.card h3 .icon,.chart-head h3 .icon{color:var(--accent-text);margin-right:4px}
#profileInfo{padding:12px 14px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line)}
#profileInfo:empty{display:none}
.tabs a.btn{min-height:36px}
.kpis.kpis-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:860px){.kpis.kpis-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:420px){.kpis.kpis-3{grid-template-columns:1fr}}
a.feature{text-decoration:none;color:inherit;display:block}
a.feature h3{color:var(--text)}
.chart svg{max-width:100%}
.kpis.kpis-2{grid-template-columns:repeat(2,minmax(0,1fr))}
@media (max-width:420px){.kpis.kpis-2{grid-template-columns:1fr}}