/* see previous cell for full comments — same content */
:root {
  --color-bg:#FFFFFF; --color-surface:#F5F7FB; --color-surface-2:#EEF2F9;
  --color-text:#0B1220; --color-text-muted:#4A5568;
  --primary-950:#070E22; --primary-900:#0A1634; --primary-800:#0D2250;
  --primary-700:#0F2E72; --primary-600:#123A90; --primary-500:#1B49B1; --primary-400:#2C63D6;
  --color-success:#0F9D58; --color-warning:#E39D18; --color-danger:#D64545; --focus-ring:rgba(44,99,214,.45);
  --font-display:"Sora", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-sans:"Plus Jakarta Sans", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --fs-xs:clamp(.78rem,.18vw + .72rem,.84rem);
  --fs-sm:clamp(.90rem,.22vw + .82rem,.98rem);
  --fs-md:clamp(1.00rem,.25vw + .92rem,1.10rem);
  --fs-lg:clamp(1.10rem,.35vw + .98rem,1.25rem);
  --fs-h4:clamp(1.25rem,.80vw + 1rem,1.60rem);
  --fs-h3:clamp(1.45rem,1.20vw + 1.05rem,2rem);
  --fs-h2:clamp(1.75rem,1.80vw + 1.10rem,2.50rem);
  --fs-h1:clamp(2rem,2.5vw + 1.2rem,3.2rem);
  --lh-tight:1.2; --lh-snug:1.35; --lh-normal:1.55;
  --container-max:1200px; --gutter:1.25rem;
  --radius-sm:10px; --radius-md:14px; --radius-lg:20px;
  --shadow-sm:0 2px 10px rgba(10,22,52,.06); --shadow-md:0 8px 30px rgba(10,22,52,.10); --shadow-lg:0 16px 50px rgba(10,22,52,.14);
  --section-y:clamp(3rem,4vw,5rem); --tile-gap:clamp(.8rem,1.2vw,1.4rem); --tile-pad:clamp(1rem,1.6vw,1.8rem);
  --bp-sm:480px; --bp-md:768px; --bp-lg:1024px; --bp-xl:1280px;
  --easing:cubic-bezier(.2,.7,.2,1); --dur-fast:160ms; --dur-base:280ms; --dur-slow:420ms; --reveal-shift:18px;
  --min-contrast-text:4.5; --min-contrast-cta:7;
}
html[data-theme="B"]{ --primary-700:#1436A3; --primary-600:#1B49B1; --color-surface:#F2F6FF; --shadow-md:0 10px 34px rgba(10,22,52,.12); }

*{box-sizing:border-box;} html,body{height:100%;}
body{margin:0;color:var(--color-text);background:var(--color-bg);font-family:var(--font-sans);font-size:var(--fs-md);line-height:var(--lh-normal);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;}
img{max-width:100%;height:auto;display:block;} img[loading="lazy"]{background:var(--color-surface-2);} svg{shape-rendering:geometricPrecision;}
a{color:var(--primary-700);text-decoration:none;} a:hover{text-decoration:underline;}
:focus{outline:none;} :focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px;}
h1,h2,h3,h4{margin:0 0 .6em;line-height:var(--lh-tight);font-family:var(--font-display);} h1{font-size:var(--fs-h1);} h2{font-size:var(--fs-h2);} h3{font-size:var(--fs-h3);} h4{font-size:var(--fs-h4);} p{margin:0 0 1em;color:var(--color-text);} .small,small{font-size:var(--fs-sm);color:var(--color-text-muted);}
.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--gutter);} .section{padding:var(--section-y) 0;}
.stack>*+*{margin-top:.75rem;} .grid{display:grid;gap:var(--tile-gap);} .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:1024px){.grid-4{grid-template-columns:repeat(3,minmax(0,1fr));}} @media (max-width:768px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}
.visually-hidden,.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0;}
.lead{font-size:var(--fs-lg);line-height:var(--lh-snug);color:var(--color-text);} .img-fluid{max-width:100%;height:auto;}
.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--tile-pad);box-shadow:var(--shadow-sm);transition:transform var(--dur-base) var(--easing),box-shadow var(--dur-base) var(--easing);} .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);} .card>h3{margin-bottom:.35rem;} .card .muted{color:var(--color-text-muted);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.1rem;border-radius:12px;border:1px solid transparent;font-weight:600;line-height:1;cursor:pointer;transition:background var(--dur-fast) var(--easing),color var(--dur-fast) var(--easing),border-color var(--dur-fast) var(--easing);} .btn:focus-visible{box-shadow:0 0 0 4px rgba(44,99,214,.18);} .btn-primary{background:var(--primary-700);color:#fff;} .btn-primary:hover{background:var(--primary-600);} .btn-outline{background:transparent;color:var(--primary-700);border-color:var(--primary-700);} .btn-outline:hover{background:var(--primary-700);color:#fff;} .btn-block{width:100%;}
.cta-bar{background:var(--primary-700);color:#fff;padding:1.2rem 0;} .cta-bar .container{display:flex;flex-wrap:wrap;align-items:center;gap:.8rem;} .cta-bar .cta-text{flex:1 1 auto;font-weight:600;} .cta-bar .btn{background:#fff;color:var(--primary-700);} .cta-bar .btn:hover{background:var(--color-surface-2);}
.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5e8ee;z-index:50;} .site-header .brand{display:flex;gap:.5rem;align-items:baseline;padding:.75rem 0;} .site-header .slogan{font-size:.9rem;color:#4A5568;} .main-nav .menu.root{display:flex;gap:1rem;align-items:center;list-style:none;margin:0;padding:0;} .main-nav .has-sub{position:relative;}
.main-nav .has-sub>a::after{content:"▾";font-size:.8rem;margin-left:.35rem;color:#4A5568;} .main-nav .submenu{position:absolute;left:0;top:100%;min-width:240px;background:#fff;border:1px solid #e5e8ee;border-radius:10px;padding:.5rem;list-style:none;display:none;box-shadow:var(--shadow-md);} .main-nav .submenu a{display:block;padding:.5rem .6rem;border-radius:8px;} .main-nav .submenu a:hover{background:var(--color-surface);text-decoration:none;} .main-nav .has-sub:hover>.submenu{display:block;}
.nav-toggle{display:none;background:none;border:1px solid #e5e8ee;padding:.5rem .75rem;border-radius:8px;} .mobile-menu{background:#fff;border-top:1px solid #e5e8ee;padding:1rem;}
@media (max-width:900px){.main-nav .menu.root{display:none;} .nav-toggle{display:block;}} #mobile-menu .submenu{display:block;position:static;border:none;box-shadow:none;padding:.25rem 0;}
.page-header{padding:2.5rem 0 1rem;background:transparent;} .page-body{padding:1.5rem 0 3rem;} .site-footer{background:var(--color-surface);padding:2rem 0;border-top:1px solid #e5e8ee;} .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:1rem;} @media (max-width:768px){.footer-grid{grid-template-columns:1fr;}}
.reveal-up{opacity:0;transform:translateY(var(--reveal-shift));transition:opacity var(--dur-slow) var(--easing),transform var(--dur-slow) var(--easing);} .reveal-up.is-visible{opacity:1;transform:translateY(0);} @media (prefers-reduced-motion:reduce){*{animation-duration:1ms!important;transition-duration:1ms!important;} .reveal-up,.reveal-up.is-visible{transform:none!important;opacity:1!important;}}