:root {
  --ground: #F5F6F8;
  --card: #FFFFFF;
  --ink: #12151C;
  --muted: #4B5563;
  --line: #E5E7EB;
  --blue: #2453E6;
  --blue-dark: #1A3FB8;
  --blue-tint: #E8EDFD;
  --green: #0B6B45;
  --green-dark: #0A4F34;
  --green-tint: #E3F2EA;
  --radius: 16px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

a { color: var(--blue-dark); }
a:hover { color: var(--ink); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 720px; }

/* Header */
.site-header { padding: 20px 0; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.mark { width: 36px; height: 36px; border-radius: 10px; background: var(--blue); display: grid; place-items: center; flex: none; }
.site-nav { display: flex; gap: 20px; flex-wrap: wrap; }
.site-nav a { text-decoration: none; font-weight: 600; font-size: 15px; color: var(--muted); padding: 10px 0; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--ink); }

/* Hero */
.hero { padding: 40px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: 56px; align-items: center; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--blue-dark); background: var(--blue-tint); padding: 6px 12px; border-radius: 999px; }
h1 { font-size: clamp(36px, 5.2vw, 58px); line-height: 1.05; letter-spacing: -0.035em; margin: 18px 0 18px; font-weight: 800; }
.lead { font-size: 19px; color: var(--muted); margin: 0 0 28px; max-width: 34em; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border-radius: 14px; font-weight: 700; font-size: 16px; text-decoration: none; }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { color: #fff; background: #2a2f3a; }
.btn-ghost { color: var(--ink); border: 1.5px solid #C9CDD4; }
.btn-ghost:hover { border-color: var(--ink); }
.note { font-size: 14px; color: var(--muted); margin-top: 14px; }

/* Phone illustration */
.phone { width: 300px; max-width: 100%; margin: 0 auto; background: var(--ink); border-radius: 46px; padding: 12px; box-shadow: 0 30px 60px -20px rgba(18, 21, 28, 0.35); }
.screen { background: var(--ground); border-radius: 36px; padding: 28px 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.screen-title { text-align: center; font-weight: 700; font-size: 15px; }
.seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); background: var(--line); border-radius: 12px; padding: 3px; gap: 3px; font-size: 12px; font-weight: 700; text-align: center; }
.seg span { padding: 8px 0; border-radius: 9px; color: var(--muted); }
.seg .on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.12); }
.msg { background: #fff; border-radius: 16px; padding: 14px; font-size: 13.5px; line-height: 1.5; }
.msg strong { display: block; margin-bottom: 6px; font-size: 13.5px; }
.msg ul { margin: 0; padding-left: 16px; }
.removed { font-size: 12px; color: var(--muted); display: flex; gap: 6px; align-items: center; padding: 0 4px; }
.removed b { color: var(--green); }
.fake-btn { border-radius: 13px; color: #fff; font-weight: 700; font-size: 14px; text-align: center; padding: 13px 0; }

/* Sections */
section { padding: 64px 0; }
.section-head { max-width: 640px; margin-bottom: 36px; }
h2 { font-size: clamp(28px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 12px; font-weight: 800; }
h3 { font-size: 19px; margin: 0 0 6px; letter-spacing: -0.01em; }
.muted { color: var(--muted); }

.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; list-style: none; margin: 0; padding: 0; }
.card { background: var(--card); border-radius: var(--radius); padding: 24px; }
.num { width: 36px; height: 36px; border-radius: 999px; background: var(--blue-tint); color: var(--blue-dark); font-weight: 800; display: grid; place-items: center; margin-bottom: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }

.features { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.feature-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px; }

.band { background: var(--ink); color: #fff; border-radius: 28px; padding: 48px; display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: 32px; align-items: center; }
.band h2 { color: #fff; }
.band p { color: #C9CDD4; margin: 0; }
.band ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 12px; }
.band li { display: flex; gap: 10px; align-items: flex-start; color: #E5E7EB; }

details { background: var(--card); border-radius: 14px; padding: 0 20px; margin-bottom: 12px; }
summary { cursor: pointer; font-weight: 700; padding: 18px 0; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-weight: 400; font-size: 22px; line-height: 1; color: var(--muted); }
details[open] summary::after { content: "–"; }
details p { margin: 0 0 18px; color: var(--muted); }

/* Document pages */
.doc { padding: 24px 0 72px; }
.doc h1 { font-size: clamp(32px, 4.5vw, 44px); margin-bottom: 8px; }
.doc .updated { color: var(--muted); margin: 0 0 32px; font-size: 15px; }
.doc h2 { font-size: 22px; margin: 36px 0 8px; letter-spacing: -0.01em; }
.doc p, .doc li { color: #2B313C; }
.doc ul { padding-left: 22px; }
.summary-box { background: var(--green-tint); color: var(--green-dark); border-radius: 16px; padding: 20px 22px; }
.summary-box p { color: var(--green-dark); margin: 0; }
.contact-card { background: var(--card); border-radius: 20px; padding: 28px; margin: 8px 0 32px; }
.contact-card .btn { margin-top: 12px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0 48px; font-size: 14px; color: var(--muted); }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.fine { margin-top: 8px; max-width: 46em; }

:focus-visible { outline: 3px solid var(--blue); outline-offset: 3px; border-radius: 6px; }

@media (max-width: 860px) {
  .hero .wrap, .band { grid-template-columns: 1fr; }
  .hero { padding-top: 16px; }
  .steps, .features { grid-template-columns: 1fr; }
  .band { padding: 32px 24px; }
  section { padding: 48px 0; }
}

.doc code { font-size: 0.9em; overflow-wrap: anywhere; }
.doc a { overflow-wrap: anywhere; }