:root { --accent: #1f5eff; --text: #0f172a; --dim: #5b6472; --line: #e5e7eb; --bg: #ffffff; --soft: #f5f7fb; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font: 16px/1.55 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; color: var(--text); background: var(--bg); }
a { color: var(--accent); }
.top { display: flex; align-items: center; justify-content: space-between; padding: 16px 28px; max-width: 1180px; margin: 0 auto; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); text-decoration: none; letter-spacing: -.01em; }
.mark { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); position: relative; }
.mark::after { content: ""; position: absolute; inset: 6px; border-radius: 50%; border: 3px solid #fff; }
.links { display: flex; align-items: center; gap: 22px; font-size: 15px; }
.links a { color: var(--dim); text-decoration: none; font-weight: 500; }
.btn { display: inline-block; padding: 12px 20px; border-radius: 999px; background: var(--accent); color: #fff !important; font-weight: 700; text-decoration: none; }
.btn.small { padding: 8px 16px; font-size: 14px; }
.btn.ghost { background: transparent; color: var(--text) !important; border: 1.5px solid var(--line); }
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; max-width: 1180px; margin: 30px auto 0; padding: 20px 28px 40px; }
.kicker { color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; font-size: 12px; margin: 0 0 12px; }
h1 { font-size: clamp(34px, 4.6vw, 56px); line-height: 1.05; margin: 0 0 18px; letter-spacing: -.02em; }
.lede { font-size: 18px; color: var(--dim); margin: 0 0 24px; max-width: 560px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.snippet { margin: 0; background: #0d1117; color: #e6edf3; padding: 16px 18px; border-radius: 12px; font-size: 12.5px; line-height: 1.5; overflow-x: auto; max-width: 620px; }
.hero-art { background: var(--soft); border-radius: 20px; padding: 18px; }
.art { width: 100%; height: auto; display: block; }
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; max-width: 1180px; margin: 10px auto; padding: 0 28px; }
.feature { border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.feature h3 { margin: 0 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--dim); font-size: 15px; }
.feature code { background: var(--soft); padding: 1px 6px; border-radius: 4px; font-size: .9em; }
.how { max-width: 820px; margin: 56px auto 40px; padding: 0 28px; }
.how h2 { font-size: 28px; margin: 0 0 14px; letter-spacing: -.01em; }
.how ol { padding-left: 22px; margin: 0; display: grid; gap: 10px; font-size: 17px; }
.how code { background: var(--soft); padding: 1px 6px; border-radius: 4px; font-size: .9em; }
.fine { color: var(--dim); font-size: 14px; margin-top: 22px; }
.foot { display: flex; justify-content: space-between; align-items: center; gap: 16px; max-width: 1180px; margin: 40px auto 0; padding: 22px 28px 34px; border-top: 1px solid var(--line); color: var(--dim); font-size: 14px; }
.foot nav { display: flex; gap: 18px; }
.foot a { color: var(--dim); text-decoration: none; }
@media (max-width: 920px) { .hero { grid-template-columns: 1fr; } .features { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } .links a:not(.btn) { display: none; } .foot { flex-direction: column; align-items: flex-start; } }