:root{
  --blue:#2f75b5;--blue-deep:#0f5da8;--blue-dark:#123f69;
  --blue-soft:#eaf4fb;--yellow:#ffd23f;--ink:#111d27;
  --muted:#5c6d7b;--line:#dce5ec;--alt:#f6f8fa;
  --shadow:0 20px 54px rgba(18,56,88,.12)
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);font-family:"Inter",Arial,sans-serif;line-height:1.6;background:#fff}
img{display:block;max-width:100%}a{text-decoration:none;color:inherit}
.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav-wrap{min-height:96px;display:flex;align-items:center;justify-content:space-between}
.brand img{width:170px;height:78px;object-fit:contain}
nav{display:flex;align-items:center;gap:30px}nav a{font-weight:700;color:#172534}
nav a:hover{color:var(--blue)}
.nav-cta{padding:12px 18px;border-radius:7px;color:#fff;background:linear-gradient(#2c78bf,#0f5da8);box-shadow:0 8px 20px rgba(15,93,168,.18)}
.hero{padding:76px 0;background:radial-gradient(circle at 88% 15%,rgba(255,210,63,.30),transparent 27%),linear-gradient(135deg,#edf6fc,#fff 62%)}
.hero-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:68px;align-items:center}
.eyebrow{margin:0 0 14px;color:var(--blue);font-size:.77rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
h1,h2,h3{margin-top:0;line-height:1.15}h1{font-size:clamp(3rem,5.7vw,5.35rem);letter-spacing:-.058em;margin-bottom:24px}
h2{font-size:clamp(2rem,3.8vw,3rem);letter-spacing:-.045em;margin-bottom:18px}
h3{font-size:1.2rem;margin-bottom:10px}.hero-copy{max-width:620px;color:#344759;font-size:1.15rem;margin:0 0 32px}
.button-row{display:flex;flex-wrap:wrap;gap:16px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 22px;border-radius:8px;font-weight:800}
.button-primary{color:#fff;background:linear-gradient(#2f78bd,#0f5da8);box-shadow:0 10px 24px rgba(15,93,168,.24)}
.button-secondary{color:var(--blue-deep);border:1px solid #c8d5df;background:#fff}
.hero-visual{display:block;border-radius:17px;transition:.2s}.hero-visual:hover{transform:translateY(-4px)}
.hero-visual img{width:100%;border:1px solid #cadbe7;border-radius:17px;box-shadow:var(--shadow)}
.section{padding:82px 0}.section-alt{background:var(--alt)}.section-heading{max-width:760px;margin-bottom:34px}.section-copy{color:var(--muted)}
.tutorial-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}.tutorial-card{overflow:hidden;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 10px 28px rgba(18,56,88,.07)}
.tutorial-thumb img{width:100%;aspect-ratio:16/9;object-fit:cover}.tutorial-body{padding:26px}.tutorial-body p{color:var(--muted)}
.tag{display:inline-block;margin-bottom:13px;padding:5px 9px;border-radius:999px;color:var(--blue-dark);background:var(--blue-soft);font-size:.7rem;font-weight:800}
.card-links{display:flex;flex-wrap:wrap;gap:18px;margin-top:18px}.card-links a{color:var(--blue-deep);font-size:.88rem;font-weight:800}
.topics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.topics-grid article{padding:25px;border:1px solid var(--line);border-radius:15px;background:#fff}
.topics-grid span{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;margin-bottom:16px;border-radius:12px;background:var(--blue-soft);color:var(--blue);font-weight:800}
.topics-grid p,.download-card p,.about-grid p{color:var(--muted)}
.download-list{display:grid;gap:16px}.download-card{display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;padding:24px;border:1px solid var(--line);border-radius:15px;background:#fff}
.download-card h3,.download-card p{margin-bottom:4px}.file-type{display:inline-flex;width:58px;height:58px;align-items:center;justify-content:center;border-radius:14px;color:var(--blue-dark);background:var(--blue-soft);font-size:.75rem;font-weight:800}
.download-button{padding:11px 17px;border-radius:8px;background:var(--yellow);color:#14212b;font-weight:800}
.about-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:80px;align-items:start}.about-grid p{margin:0;font-size:1.1rem}
footer{color:#fff;background:radial-gradient(circle at 10% 0%,rgba(255,255,255,.08),transparent 25%),linear-gradient(135deg,#0e66b5,#084f91)}
.footer-main{display:grid;grid-template-columns:1.45fr .75fr .85fr .65fr;gap:54px;padding-top:50px;padding-bottom:38px}
.footer-brand{max-width:360px}.footer-brand img{width:190px;height:112px;object-fit:contain;object-position:left center;margin-bottom:8px}.footer-brand p{margin:0;color:#e2eef8;font-size:.92rem}
.footer-column{display:flex;flex-direction:column;gap:8px}.footer-column h3{font-size:.94rem;margin-bottom:7px}.footer-column a{color:#e2eef8;font-size:.88rem}.footer-column a:hover{color:var(--yellow)}
.footer-bottom{padding:20px 0 25px;border-top:1px solid rgba(255,255,255,.25);color:#dceaf6;text-align:center;font-size:.82rem}
@media(max-width:980px){.hero-grid{grid-template-columns:1fr}.topics-grid{grid-template-columns:repeat(2,1fr)}.footer-main{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.container{width:min(100% - 28px,1180px)}.nav-wrap{min-height:78px}.brand img{width:135px;height:62px}nav a:not(.nav-cta){display:none}.hero{padding:58px 0}.section{padding:62px 0}.tutorial-grid,.topics-grid{grid-template-columns:1fr}.download-card{grid-template-columns:auto 1fr}.download-button{grid-column:1/-1;text-align:center}.about-grid{grid-template-columns:1fr;gap:30px}.footer-main{grid-template-columns:1fr;gap:28px}}