:root {
  --bg: #ffffff;
  --bg-soft: #f6f6f4;
  --text: #111111;
  --muted: #5f5f5f;
  --line: #e7e7e3;
  --accent: #1f4fff;
  --radius: 14px;
  --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0e;
    --bg-soft: #161618;
    --text: #f2f2f0;
    --muted: #9a9a9a;
    --line: #262628;
    --accent: #6f8cff;
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { font-weight: 700; letter-spacing: -0.02em; text-decoration: none; font-size: 18px; display: flex; align-items: center; gap: 10px; }
.logo-mark { width: 26px; height: 26px; border-radius: 7px; background: var(--text); color: var(--bg); display: grid; place-items: center; font-size: 14px; font-weight: 700; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { text-decoration: none; color: var(--muted); font-size: 14px; font-weight: 500; transition: color .15s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }
.nav .btn { color: var(--bg); }
@media (max-width: 640px) {
  .nav { gap: 16px; }
  .nav .hide-sm { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--text); color: var(--bg);
  padding: 10px 18px; border-radius: 999px;
  text-decoration: none; font-weight: 600; font-size: 14px;
  border: 1px solid var(--text); cursor: pointer; font-family: inherit;
  transition: opacity .15s;
}
.btn:hover { opacity: .85; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--text); opacity: 1; }

/* Hero */
.hero { padding: 120px 0 96px; }
.eyebrow { font-size: 13px; font-weight: 600; color: var(--accent); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 20px; }
.hero h1 { font-size: clamp(40px, 7vw, 76px); line-height: 1.02; letter-spacing: -0.045em; font-weight: 700; max-width: 14ch; }
.hero p.lead { font-size: clamp(17px, 2vw, 20px); color: var(--muted); max-width: 54ch; margin-top: 28px; }
.hero .actions { display: flex; gap: 12px; margin-top: 40px; flex-wrap: wrap; }

/* Sections */
section { padding: 88px 0; border-top: 1px solid var(--line); }
.section-head { display: grid; grid-template-columns: 1fr 1.4fr; gap: 48px; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.03em; line-height: 1.1; font-weight: 700; }
.section-head p { color: var(--muted); font-size: 17px; }
@media (max-width: 760px) { .section-head { grid-template-columns: 1fr; gap: 16px; } }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr; } }
.card { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; }
.card .icon { width: 40px; height: 40px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); display: grid; place-items: center; margin-bottom: 24px; }
.card .icon svg { width: 20px; height: 20px; stroke: var(--text); }
.card h3 { font-size: 19px; letter-spacing: -0.02em; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }
.card ul { list-style: none; margin-top: 20px; display: grid; gap: 8px; }
.card li { font-size: 14px; color: var(--muted); padding-left: 18px; position: relative; }
.card li::before { content: ""; position: absolute; left: 0; top: 10px; width: 8px; height: 1px; background: var(--muted); }

.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; counter-reset: step; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step { counter-increment: step; border-top: 1px solid var(--text); padding-top: 20px; }
.step::before { content: "0" counter(step); font-size: 13px; font-weight: 600; color: var(--muted); display: block; margin-bottom: 12px; font-variant-numeric: tabular-nums; }
.step h3 { font-size: 17px; margin-bottom: 8px; letter-spacing: -0.01em; }
.step p { color: var(--muted); font-size: 15px; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
@media (max-width: 760px) { .stats { grid-template-columns: 1fr 1fr; } }
.stat strong { display: block; font-size: 22px; letter-spacing: -0.02em; margin-bottom: 4px; }
.stat span { color: var(--muted); font-size: 14px; }

.cta { text-align: center; padding: 112px 0; }
.cta h2 { font-size: clamp(32px, 5vw, 52px); letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 20px; }
.cta p { color: var(--muted); font-size: 18px; margin-bottom: 36px; }
.cta .mail { font-size: clamp(20px, 3vw, 28px); font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--line); padding-bottom: 4px; transition: border-color .15s; }
.cta .mail:hover { border-color: var(--text); }

/* Legal / document pages */
.doc { padding: 80px 0 96px; }
.doc .wrap { max-width: 760px; }
.doc h1 { font-size: clamp(36px, 5vw, 52px); letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 12px; }
.doc .meta { color: var(--muted); font-size: 14px; margin-bottom: 48px; padding-bottom: 32px; border-bottom: 1px solid var(--line); }
.doc h2 { font-size: 22px; letter-spacing: -0.02em; margin: 48px 0 14px; scroll-margin-top: 88px; }
.doc h3 { font-size: 17px; margin: 28px 0 10px; }
.doc p, .doc li { color: var(--text); opacity: .88; font-size: 16px; }
.doc p + p { margin-top: 14px; }
.doc ul, .doc ol { padding-left: 22px; margin: 12px 0; display: grid; gap: 6px; }
.doc a { color: var(--accent); text-decoration: none; }
.doc a:hover { text-decoration: underline; }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; display: block; overflow-x: auto; }
.doc th, .doc td { text-align: left; padding: 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.doc th { font-weight: 600; background: var(--bg-soft); }
.toc { background: var(--bg-soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 28px; margin-bottom: 16px; }
.toc strong { font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.toc ol { margin-top: 12px; columns: 2; column-gap: 32px; display: block; }
.toc li { margin-bottom: 6px; font-size: 14px; }
@media (max-width: 600px) { .toc ol { columns: 1; } }
.note { background: var(--bg-soft); border-left: 3px solid var(--accent); padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 20px 0; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }
.contact-info h1 { font-size: clamp(40px, 6vw, 60px); letter-spacing: -0.045em; line-height: 1.02; margin-bottom: 20px; }
.contact-info p { color: var(--muted); font-size: 17px; }
.contact-list { margin-top: 40px; display: grid; gap: 24px; }
.contact-list div span { display: block; font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 4px; font-weight: 600; }
.contact-list a { font-size: 18px; font-weight: 600; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
form.card { display: grid; gap: 18px; }
label { font-size: 14px; font-weight: 600; display: grid; gap: 8px; }
input, select, textarea {
  font: inherit; font-size: 15px; font-weight: 400;
  padding: 12px 14px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text);
  width: 100%; outline: none; transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--text); }
textarea { min-height: 150px; resize: vertical; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 520px) { .row-2 { grid-template-columns: 1fr; } }
.form-hint { font-size: 13px; color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 56px 0 40px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-grid h4 { font-size: 13px; font-weight: 600; margin-bottom: 14px; }
.footer-grid ul { list-style: none; display: grid; gap: 10px; }
.footer-grid a { text-decoration: none; color: var(--muted); }
.footer-grid a:hover { color: var(--text); }
.footer-grid p { color: var(--muted); max-width: 32ch; margin-top: 14px; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }