:root{--bg:#f5f7fb;--dark:#101828;--muted:#667085;--line:#e4e7ec;--card:#fff;--primary:#0f766e;--primary2:#14b8a6;--soft:#ecfdf5;--shadow:0 20px 50px rgba(16,24,40,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--dark);line-height:1.6}.container{width:min(1120px,92%);margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--dark);font-weight:800;font-size:20px}.brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;display:grid;place-items:center}.nav-menu{display:flex;align-items:center;gap:8px}.nav-menu a{text-decoration:none;color:var(--muted);font-weight:700;padding:10px 14px;border-radius:12px}.nav-menu a.active,.nav-menu a:hover{color:var(--primary);background:var(--soft)}.nav-menu .nav-cta{background:var(--dark);color:#fff}.nav-toggle{display:none;border:0;background:var(--dark);color:#fff;border-radius:10px;padding:9px 12px}.hero{padding:86px 0 64px;background:radial-gradient(circle at top right,#d1fae5,transparent 35%),linear-gradient(180deg,#fff,var(--bg))}.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center}.eyebrow{display:inline-block;color:var(--primary);background:var(--soft);font-weight:800;font-size:13px;padding:7px 12px;border-radius:999px}.hero h1,.page-hero h1{font-size:clamp(36px,5vw,64px);line-height:1.06;margin:18px 0}.hero p,.page-hero p{font-size:18px;color:var(--muted);max-width:720px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 18px;border-radius:14px;font-weight:800;text-decoration:none;border:1px solid transparent}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#fff;color:var(--dark);border-color:var(--line)}.hero-card,.lesson-card,.step-card,.course-card{background:var(--card);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.hero-card{padding:28px}.timeline{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:16px}.timeline li{display:flex;gap:14px}.timeline span,.step-no{width:42px;height:42px;border-radius:14px;background:var(--soft);color:var(--primary);display:grid;place-items:center;font-weight:900;flex:none}.timeline small{display:block;color:var(--muted)}.section{padding:64px 0}.section.soft{background:#fff}.section-head{text-align:center;margin-bottom:28px}.section-head h2,.split h2{font-size:36px;margin:14px 0}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.course-card{text-decoration:none;color:var(--dark);padding:24px;transition:.2s}.course-card:hover{transform:translateY(-4px)}.course-card p,.lesson-card li,.step-card p,.footer-grid p{color:var(--muted)}.icon{font-size:34px}.split{display:flex;justify-content:space-between;gap:24px;align-items:center}.page-hero{padding:70px 0;background:linear-gradient(135deg,#fff,#ecfdf5)}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.lesson-card,.step-card{padding:28px}.steps{display:grid;gap:22px}.notice{margin-top:18px;padding:16px;border-radius:16px;background:#fffbeb;color:#92400e;border:1px solid #fde68a}.site-footer{background:#101828;color:#fff;padding:34px 0 18px}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.footer-grid p,.footer-bottom{color:#cbd5e1}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:20px;padding-top:18px;font-size:14px}@media(max-width:860px){.nav-toggle{display:block}.nav-menu{display:none;position:absolute;top:76px;left:4%;right:4%;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-menu.show{display:flex}.hero-grid,.lesson-grid,.footer-grid{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr}.split{display:block}.split .btn{margin-top:18px}}@media(max-width:560px){.cards{grid-template-columns:1fr}.hero{padding-top:52px}.hero h1,.page-hero h1{font-size:36px}}
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