:root {
  --ink: #eaf2ff;
  --muted: #a7b7cc;
  --line: rgba(160, 198, 255, .16);
  --blue: #79a8ff;
  --green: #77dfac;
  --navy: #07111e;
  --panel: rgba(11, 25, 43, .76);
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  font: 16px/1.65 Manrope, Arial, sans-serif;
  background: radial-gradient(circle at 10% 8%, rgba(84, 140, 238, .22), transparent 26%), radial-gradient(circle at 92% 16%, rgba(74, 211, 157, .14), transparent 20%), var(--navy);
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { display: block; max-width: 100%; }
.shell { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 10; backdrop-filter: blur(16px); background: rgba(5, 13, 23, .76); border-bottom: 1px solid var(--line); }
.site-header .shell { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); font-weight: 800; font-family: "Space Grotesk", Arial, sans-serif; }
.brand:hover { text-decoration: none; }
.brand img { width: 42px; height: 42px; padding: 5px; border-radius: 13px; background: rgba(121, 168, 255, .12); border: 1px solid rgba(121, 168, 255, .22); }
.site-header nav { display: flex; align-items: center; gap: 18px; font-size: .9rem; }
.site-header nav a:not(.button) { color: var(--muted); }
.button { display: inline-flex; align-items: center; justify-content: center; padding: .62rem 1rem; border-radius: 999px; font-weight: 800; color: #061322; background: linear-gradient(135deg, #d8e8ff, var(--blue) 55%, var(--green)); }
.button:hover { text-decoration: none; transform: translateY(-1px); }
.hero { padding: 74px 0 56px; border-bottom: 1px solid var(--line); }
.eyebrow { display: inline-flex; padding: .43rem .75rem; border: 1px solid var(--line); border-radius: 999px; color: var(--green); font: 700 .75rem/1 "Space Grotesk", Arial, sans-serif; letter-spacing: .1em; text-transform: uppercase; }
h1, h2, h3 { font-family: "Space Grotesk", Arial, sans-serif; line-height: 1.14; color: #fff; }
h1 { max-width: 840px; margin: 16px 0 20px; font-size: clamp(2.3rem, 5vw, 4.35rem); letter-spacing: -.05em; }
h2 { margin: 0 0 16px; font-size: clamp(1.65rem, 3vw, 2.35rem); }
h3 { margin: 0 0 8px; font-size: 1.08rem; }
.lead { max-width: 780px; margin: 0; color: var(--muted); font-size: 1.13rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.outline-button { display: inline-flex; align-items: center; justify-content: center; padding: .62rem 1rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); font-weight: 700; }
.outline-button:hover { background: rgba(121, 168, 255, .1); text-decoration: none; }
.content { padding: 55px 0 70px; }
.toc { display: flex; flex-wrap: wrap; gap: 9px; margin: 0 0 52px; }
.toc a { padding: .42rem .72rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .86rem; }
.toc a:hover { background: rgba(121, 168, 255, .08); text-decoration: none; color: var(--ink); }
.section { max-width: 920px; margin: 0 auto 62px; }
.section > p { color: var(--muted); }
.notice { margin: 22px 0; padding: 18px 20px; border: 1px solid rgba(255, 190, 79, .38); border-left: 4px solid #f7bf45; border-radius: 12px; background: rgba(255, 190, 79, .09); color: #f5e7c6; }
.notice strong { color: #fff4d2; }
.mapping { width: 100%; border-collapse: collapse; margin: 25px 0; overflow: hidden; border-radius: 14px; background: var(--panel); border: 1px solid var(--line); }
.mapping th, .mapping td { padding: 14px; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
.mapping th { background: rgba(121, 168, 255, .13); color: #fff; font: 700 .84rem/1.3 "Space Grotesk", Arial, sans-serif; }
.mapping td { color: var(--muted); }
.mapping tr:last-child td { border-bottom: 0; }
.mapping td:first-child { color: var(--green); font-weight: 800; width: 42px; text-align: center; }
.steps { display: grid; gap: 14px; }
.step { display: grid; grid-template-columns: 42px 1fr; gap: 15px; padding: 19px; border: 1px solid var(--line); border-radius: 15px; background: var(--panel); }
.num { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 50%; color: #061322; background: var(--green); font: 800 .95rem/1 "Space Grotesk", Arial, sans-serif; }
.step p { margin: 0; color: var(--muted); }
.screens { display: grid; gap: 30px; }
figure { margin: 0; padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
figure img { width: 100%; border-radius: 10px; }
figcaption { padding: 13px 5px 2px; color: var(--muted); font-size: .9rem; }
.faq { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); padding: 18px 0; }
summary { cursor: pointer; color: #fff; font: 700 1.04rem/1.4 "Space Grotesk", Arial, sans-serif; }
details p { max-width: 850px; margin: 12px 0 0; color: var(--muted); }
.cta { padding: 34px; border: 1px solid rgba(119, 223, 172, .26); border-radius: 20px; background: linear-gradient(130deg, rgba(121, 168, 255, .13), rgba(119, 223, 172, .09)); }
.cta p { color: var(--muted); max-width: 680px; }
.footer { padding: 28px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .88rem; }
.footer .shell { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px; }
@media (max-width: 680px) {
  .shell { width: min(var(--max), calc(100% - 28px)); }
  .site-header { position: static; }
  .site-header .shell { padding: 13px 0; flex-wrap: wrap; }
  .site-header nav a:not(.button) { display: none; }
  .hero { padding: 48px 0 42px; }
  .mapping { font-size: .83rem; }
  .mapping th, .mapping td { padding: 10px 8px; }
  .mapping th:nth-child(4), .mapping td:nth-child(4) { display: none; }
  .step { padding: 15px; }
  .cta { padding: 24px; }
}