:root { --ink:#101828; --blue:#1769ff; --paper:#f7f4ec; --line:#c9c8c3; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; background:var(--paper); color:var(--ink); font-family:Arial, Helvetica, sans-serif; }
a { color:inherit; text-decoration:none; }
.header { height:92px; padding:0 5.5vw; display:flex; align-items:center; justify-content:space-between; border-bottom:1px solid rgba(16,24,40,.14); position:relative; z-index:10; }
.brand { display:flex; align-items:center; gap:12px; font-weight:800; text-transform:uppercase; letter-spacing:.11em; font-size:18px; }
.mark { width:36px; height:36px; background:var(--blue); display:block; position:relative; overflow:hidden; }
.mark:after { content:""; position:absolute; background:var(--paper); width:12px; height:52px; transform:rotate(45deg); top:-11px; left:13px; }
.mark i { position:absolute; inset:9px 0 0 9px; border:2px solid white; }
nav { display:flex; gap:38px; font-size:15px; }
nav a,.text-link { transition:.2s; }
nav a:hover,.text-link:hover { color:var(--blue); }
.button { border:0; display:inline-flex; justify-content:center; align-items:center; gap:22px; padding:20px 28px; background:var(--blue); color:white; font:inherit; font-weight:700; cursor:pointer; transition:.2s; }
.button:hover { background:#0052d9; transform:translateY(-2px); }
.button-small { padding:14px 26px; font-size:14px; }
.hero { min-height:calc(100vh - 92px); display:grid; grid-template-columns:54% 46%; padding-left:5.5vw; overflow:hidden; }
.hero-copy { padding:8vh 4vw 35px 0; position:relative; z-index:2; }
.eyebrow { margin:0 0 24px; color:var(--blue); text-transform:uppercase; font-size:13px; font-weight:800; letter-spacing:.17em; }
h1 { margin:0; font-size:clamp(62px,7.2vw,118px); line-height:.87; letter-spacing:-.065em; font-weight:800; }
h1 span { position:relative; }
h1 span:after { content:""; position:absolute; left:0; right:0; bottom:-6px; height:5px; background:var(--blue); transform:rotate(.7deg); border-radius:50%; }
.lead { max-width:600px; font-size:20px; line-height:1.55; margin:35px 0 30px; }
.hero-actions { display:flex; align-items:center; gap:36px; }
.text-link { color:var(--blue); font-weight:700; font-size:15px; }
.text-link span { margin-left:12px; font-size:20px; }
.trust-row { margin-top:6vh; padding-top:28px; border-top:1px solid var(--line); display:grid; grid-template-columns:repeat(3,1fr); gap:22px; max-width:760px; }
.trust-row div { display:flex; flex-direction:column; gap:5px; }
.trust-row strong { font-size:25px; }
.trust-row span { font-size:13px; color:#616873; }
.hero-visual { position:relative; min-height:760px; }
.math-board { position:absolute; z-index:2; width:84%; height:70%; right:0; top:15%; padding:50px; background:var(--blue); color:white; overflow:hidden; }
.math-board:before { content:""; position:absolute; inset:0; background-image:linear-gradient(rgba(255,255,255,.09) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.09) 1px,transparent 1px); background-size:42px 42px; }
.board-label { position:relative; z-index:2; display:inline-block; font-size:12px; text-transform:uppercase; letter-spacing:.18em; font-weight:800; }
.board-formula { position:relative; z-index:2; margin-top:74px; font-family:Georgia,serif; font-size:38px; display:flex; align-items:center; gap:12px; }
.board-formula span { display:inline-block; padding:0 9px 8px; border-bottom:2px solid white; }
.board-formula i { position:absolute; left:148px; top:54px; font-size:22px; font-style:normal; }
.graph { position:absolute; z-index:2; width:55%; right:-2%; bottom:8%; overflow:visible; }
.graph .axis { fill:none; stroke:rgba(255,255,255,.6); stroke-width:2; }
.graph .curve { fill:none; stroke:white; stroke-width:5; stroke-linecap:round; }
.graph circle { fill:var(--paper); }
.board-note { position:absolute; z-index:3; left:50px; bottom:48px; max-width:175px; display:flex; flex-direction:column; gap:6px; }
.board-note b { font-size:29px; }.board-note span { font-size:13px; line-height:1.45; color:rgba(255,255,255,.75); }
.math-ring { position:absolute; z-index:1; width:260px; height:260px; border:42px solid #dbe7ff; border-radius:50%; left:-2%; top:2%; }
.formula { position:absolute; z-index:3; font-family:Georgia,serif; font-style:italic; color:#667080; letter-spacing:.18em; }
.formula-top { top:8%; left:5%; }
.formula-bottom { bottom:11%; left:2%; color:white; }
.dots { position:absolute; z-index:3; width:120px; height:92px; left:1%; bottom:23%; background-image:radial-gradient(var(--ink) 1.4px,transparent 1.4px); background-size:15px 15px; opacity:.55; }
.section { padding:120px 6vw; display:grid; grid-template-columns:22% 78%; border-top:1px solid var(--line); }
.section-label { text-transform:uppercase; font-size:12px; letter-spacing:.18em; font-weight:800; color:#737984; padding-top:12px; }
h2 { margin:0; font-size:clamp(44px,5vw,76px); line-height:.97; letter-spacing:-.05em; }
.section-intro { max-width:740px; font-size:22px; line-height:1.55; margin:36px 0 65px; }
.principles { display:grid; grid-template-columns:repeat(3,1fr); border-top:1px solid var(--line); }
.principles article { padding:28px 34px 12px 0; }
.principles article+article { border-left:1px solid var(--line); padding-left:34px; }
.principles span,.lesson-grid b { color:var(--blue); font-size:12px; letter-spacing:.18em; }
h3 { font-size:22px; line-height:1.2; margin:26px 0 12px; }
.principles p,.lesson-grid p { color:#5a626d; line-height:1.65; }
.lessons { background:var(--ink); color:white; }
.section-label.light,.lessons p { color:#aeb7c6; }
.lesson-grid { margin-top:65px; display:grid; grid-template-columns:repeat(2,1fr); border-top:1px solid #344052; border-left:1px solid #344052; }
.lesson-grid article { min-height:230px; padding:34px; border-right:1px solid #344052; border-bottom:1px solid #344052; }
.lesson-grid h3 { font-size:26px; margin-top:42px; }
.lesson-grid p { max-width:400px; }
.result-cards { margin-top:60px; display:grid; grid-template-columns:1.1fr 1fr 1fr; gap:18px; }
.result-cards article { min-height:330px; border:1px solid var(--line); padding:34px; display:flex; flex-direction:column; justify-content:space-between; background:#fbf9f3; }
.result-cards p { font-size:20px; line-height:1.5; }
.result-cards span { font-size:13px; color:#737984; }
.result-main { background:var(--blue)!important; color:white; }
.result-main span { color:white; }
.result-main strong { font-size:120px; line-height:.8; letter-spacing:-.08em; }
.result-main b { font-size:20px; }
.price { padding-top:90px; padding-bottom:90px; }
.price-options { display:grid; gap:18px; }
.price-card { display:grid; grid-template-columns:1.2fr .8fr; gap:40px; background:white; padding:50px; border:1px solid var(--line); }
.price-value { border-left:1px solid var(--line); padding-left:55px; display:flex; flex-direction:column; align-items:flex-start; justify-content:center; gap:16px; }
.price-value strong { font-size:44px; letter-spacing:-.05em; }
.price-value span { color:#737984; margin-bottom:15px; }
.price-card-group { background:var(--ink); color:white; border-color:var(--ink); }
.price-card-group .price-value { border-color:#344052; }
.price-card-group .price-value span { color:#aeb7c6; }
.contact { background:var(--blue); color:white; padding:110px 10vw; display:grid; grid-template-columns:1fr 1fr; gap:10vw; align-items:start; }
.contact .eyebrow { color:white; opacity:.7; }
.contact>div>p:not(.eyebrow) { font-size:20px; line-height:1.55; max-width:550px; }
form { display:grid; gap:20px; }
.honeypot { position:absolute!important; left:-9999px!important; width:1px!important; height:1px!important; opacity:0!important; pointer-events:none!important; }
label { font-size:13px; font-weight:700; display:grid; gap:8px; }
input,textarea { width:100%; border:0; border-bottom:1px solid rgba(255,255,255,.55); background:transparent; color:white; padding:12px 0; font:inherit; outline:none; resize:vertical; }
input::placeholder,textarea::placeholder { color:rgba(255,255,255,.65); }
form .button { background:white; color:var(--blue); margin-top:10px; }
form .button:disabled { opacity:.7; cursor:wait; transform:none; }
.form-error { margin:0; padding:12px 14px; background:rgba(120,0,20,.25); border:1px solid rgba(255,255,255,.35); font-size:14px; }
form small { opacity:.72; }
.success { background:white; color:var(--ink); padding:42px; }
.success span { display:grid; place-items:center; width:50px; height:50px; background:var(--blue); color:white; border-radius:50%; font-size:26px; }
.success button { border:0; border-bottom:1px solid; padding:0 0 3px; background:none; cursor:pointer; }
footer { padding:35px 5.5vw; display:flex; align-items:center; justify-content:space-between; font-size:13px; }
footer .brand { font-size:14px; }
footer .mark { width:28px; height:28px; }
footer .mark:after { left:9px; }

@media (max-width:900px) {
  .header { height:74px; padding:0 20px; }.header nav { display:none; }.brand { font-size:14px; }.button-small { padding:11px 16px; }
  .hero { grid-template-columns:1fr; padding:0 20px; }.hero-copy { padding:70px 0 30px; }.hero-visual { min-height:560px; margin:0 -20px; }.math-board { width:92%; height:80%; top:8%; padding:38px; }.board-note { left:38px; bottom:35px; }.formula-top { left:3%; top:2%; }
  h1 { font-size:clamp(56px,15vw,90px); }.lead { font-size:18px; }.hero-actions { align-items:flex-start; flex-direction:column; gap:22px; }.trust-row { grid-template-columns:repeat(3,1fr); }.trust-row strong { font-size:20px; }
  .section { padding:80px 20px; grid-template-columns:1fr; gap:35px; }.principles { grid-template-columns:1fr; }.principles article+article { border-left:0; border-top:1px solid var(--line); padding-left:0; }.lesson-grid { grid-template-columns:1fr; }.result-cards { grid-template-columns:1fr; }.price-card { grid-template-columns:1fr; padding:28px; }.price-value { border-left:0; border-top:1px solid var(--line); padding:30px 0 0; }.contact { padding:80px 20px; grid-template-columns:1fr; gap:55px; }footer { gap:20px; }footer p { display:none; }
}

@media (max-width:520px) {
  .header .brand span:last-child { display:none; }.hero-copy { padding-top:50px; }h1 { font-size:56px; }.trust-row { gap:8px; }.trust-row span { font-size:11px; }.hero-visual { min-height:450px; }.section-intro { font-size:18px; }.result-main strong { font-size:90px; }.price-value strong { font-size:36px; }
}