:root{--navy:#07142f;--blue:#1986ef;--cyan:#13d5ce;--paper:#f6f8fb;--ink:#111b30;--muted:#647089;--line:#dbe2ed;--white:#fff;--shadow:0 20px 55px rgba(7,20,47,.12)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.55}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;padding:14px clamp(18px,4vw,64px);background:rgba(246,248,251,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(16px)}.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.02em}.mark{display:grid;place-items:center;width:44px;height:32px;background:var(--navy);color:var(--cyan);border-radius:8px;font-size:.78rem;letter-spacing:.08em}.topbar nav{display:flex;align-items:center;gap:22px;font-size:.92rem}.hero{min-height:620px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(300px,.6fr);align-items:center;gap:6vw;padding:80px clamp(20px,7vw,110px);background:radial-gradient(circle at 85% 20%,rgba(19,213,206,.17),transparent 30%),linear-gradient(145deg,#fff 0%,#eef4ff 100%)}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.74rem;font-weight:800;color:#1375cf;margin:0 0 14px}.hero h1{font-size:clamp(3rem,7.2vw,6.8rem);line-height:.92;letter-spacing:-.065em;max-width:880px;margin:0}.lead{max-width:680px;font-size:clamp(1.05rem,1.8vw,1.35rem);color:var(--muted);margin:28px 0}.actions{display:flex;gap:12px;flex-wrap:wrap}.button{border:0;border-radius:10px;padding:11px 17px;font-weight:750;cursor:pointer;display:inline-flex;justify-content:center;align-items:center}.primary{background:var(--blue);color:white;box-shadow:0 10px 25px rgba(25,134,239,.25)}.secondary{background:white;color:var(--ink);border:1px solid var(--line)}.ghost{background:transparent;border:1px solid var(--line)}.signal{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);box-shadow:var(--shadow)}.signal div{min-height:145px;background:white;padding:24px;display:flex;flex-direction:column;justify-content:space-between}.signal strong{font-size:2.3rem;color:var(--blue)}.signal span{font-weight:700}.strip{display:flex;justify-content:space-around;gap:20px;flex-wrap:wrap;padding:18px 6vw;background:var(--navy);color:white;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em}.section{padding:90px clamp(20px,7vw,110px);scroll-margin-top:70px}.section-head,.workspace-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:34px}.section h2,.dark h2{font-size:clamp(2rem,4vw,3.8rem);letter-spacing:-.045em;line-height:1;margin:0}.section-head p{color:var(--muted)}label{display:grid;gap:7px;font-weight:700;font-size:.9rem}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:9px;padding:12px;background:white;color:var(--ink)}.course-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.course-card{background:white;border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;flex-direction:column;box-shadow:0 8px 30px rgba(7,20,47,.04)}.course-card h3{font-size:1.35rem;line-height:1.15;margin:18px 0 10px}.course-card p{color:var(--muted);flex:1}.course-card ol{padding-left:20px;color:#39445a;font-size:.9rem}.course-card .button{margin-top:12px}.course-meta{display:flex;justify-content:space-between;gap:8px;color:#1375cf;text-transform:uppercase;font-size:.68rem;letter-spacing:.08em;font-weight:800}.dark{background:var(--navy);color:white}.dark .eyebrow{color:var(--cyan)}.mode{display:inline-block;border:1px solid rgba(19,213,206,.45);color:var(--cyan);border-radius:999px;padding:6px 10px;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em}.workspace-grid{display:grid;grid-template-columns:.8fr 1.2fr;border:1px solid #2b3958;border-radius:18px;overflow:hidden}.lesson-panel,.answer{padding:30px;background:#0b1b3c}.lesson-panel{display:grid;gap:18px}.dark input,.dark select,.dark textarea{background:#07142f;border-color:#344260;color:white}.answer{background:#fff;color:var(--ink);min-height:330px;font-size:1.05rem}.answer .mode{color:#087d79;border-color:#7ddedb}.request-form{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:980px}.wide{grid-column:1/-1}.status{color:#087d79;font-weight:700}.metrics{display:grid;grid-template-columns:repeat(5,1fr);gap:14px;margin:24px 0}.metrics article{background:white;border:1px solid var(--line);border-radius:14px;padding:20px}.metrics strong{display:block;font-size:1.8rem;text-transform:capitalize}.metrics span{font-size:.8rem;color:var(--muted)}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;background:white}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}footer{display:flex;justify-content:space-between;gap:30px;padding:45px clamp(20px,7vw,110px);background:#030a19;color:#cbd5e7}dialog{border:0;border-radius:18px;padding:0;box-shadow:var(--shadow);width:min(440px,calc(100% - 32px))}dialog::backdrop{background:rgba(3,10,25,.72)}dialog form{padding:32px;display:grid;gap:18px}dialog h2{font-size:2rem;margin:0}.close{position:absolute;right:16px;top:12px;border:0;background:none;font-size:1.8rem;cursor:pointer}.error{color:#b42318}.hidden{display:none!important}@media(max-width:900px){.topbar nav a{display:none}.hero{grid-template-columns:1fr;min-height:auto;padding-top:55px}.hero h1{font-size:clamp(3rem,14vw,5.6rem)}.signal{max-width:520px}.course-grid{grid-template-columns:1fr 1fr}.workspace-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}}@media(max-width:620px){.topbar{padding:12px 16px}.section{padding:65px 18px}.course-grid{grid-template-columns:1fr}.section-head,.workspace-head{align-items:start;flex-direction:column}.request-form{grid-template-columns:1fr}.wide{grid-column:auto}.signal div{min-height:110px}.strip{justify-content:flex-start}.metrics{grid-template-columns:1fr}footer{flex-direction:column}.brand span:last-child{display:none}}
