:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #10202c;
  --muted: #5d6a75;
  --line: #dfe7ee;
  --primary: #0f6f86;
  --primary-dark: #095061;
  --accent: #ffb347;
  --danger: #a92727;
  --danger-bg: #fff1f1;
  --ok-bg: #edf9f4;
  --shadow: 0 18px 50px rgba(16, 32, 44, .10);
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.62;
}
a { color: var(--primary-dark); text-decoration-thickness: .08em; text-underline-offset: .18em; }
img { max-width: 100%; height: auto; border-radius: 16px; }
.container { width: min(1120px, calc(100% - 32px)); margin-inline: auto; }
.skip-link { position: absolute; left: -999px; top: 12px; background: #fff; padding: 10px 14px; z-index: 99; }
.skip-link:focus { left: 12px; }
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 72px; display:flex; align-items:center; justify-content:space-between; gap: 16px; }
.brand { display:flex; align-items:center; gap: 10px; color: var(--ink); text-decoration:none; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { width: 40px; height: 40px; display:grid; place-items:center; border-radius: 12px; background: var(--primary); color:#fff; font-weight:900; }
.nav-links { display:flex; align-items:center; flex-wrap:wrap; gap: 16px; font-size: 14px; }
.nav-links a { color: var(--muted); text-decoration:none; font-weight: 650; }
.nav-links a:hover { color: var(--primary-dark); }
.nav-cta { background: var(--primary); color:#fff !important; padding: 10px 14px; border-radius: 999px; }
.hero { padding: 72px 0 36px; background: radial-gradient(circle at top right, rgba(15,111,134,.16), transparent 38%), linear-gradient(180deg, #fff 0%, var(--bg) 100%); }
.hero-grid { display:grid; grid-template-columns: 1.08fr .92fr; gap: 42px; align-items:center; }
.kicker { display:inline-flex; align-items:center; gap:8px; color: var(--primary-dark); background:#e6f5f8; padding: 8px 12px; border-radius:999px; font-weight:700; font-size:14px; }
h1 { font-size: clamp(38px, 5.6vw, 70px); line-height: .98; letter-spacing: -.055em; margin: 18px 0; }
.lead { font-size: clamp(18px, 2vw, 23px); color: #3e4a55; max-width: 780px; }
.hero-actions { display:flex; flex-wrap:wrap; gap: 12px; margin-top: 26px; }
.button { display:inline-flex; align-items:center; justify-content:center; gap:10px; border: 0; text-decoration: none; border-radius: 14px; padding: 13px 17px; font-weight: 800; cursor: pointer; }
.button.primary { background: var(--primary); color:#fff; box-shadow: 0 12px 24px rgba(15,111,134,.22); }
.button.secondary { background: #fff; color: var(--primary-dark); border: 1px solid var(--line); }
.button.warning { background: var(--danger); color:#fff; }
.hero-card { background:#fff; border:1px solid var(--line); border-radius: 24px; box-shadow: var(--shadow); padding: 16px; }
.hero-card figcaption, .figure-caption { color: var(--muted); font-size: 14px; margin-top: 8px; }
.notice { border-radius: var(--radius); padding: 18px 20px; border: 1px solid var(--line); background: #fff; }
.notice.danger { border-color: #f0c7c7; background: var(--danger-bg); }
.notice strong { display:block; margin-bottom: 5px; }
.notice.compact { padding: 14px 16px; }
section { padding: 56px 0; }
.section-head { max-width: 820px; margin-bottom: 26px; }
.section-head h2 { margin: 0 0 10px; font-size: clamp(28px, 3vw, 42px); letter-spacing: -.03em; line-height:1.08; }
.section-head p { color: var(--muted); font-size: 18px; margin: 0; }
.grid { display:grid; gap: 18px; }
.grid.two { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid.four { grid-template-columns: repeat(4, minmax(0,1fr)); }
.card { background: var(--surface); border:1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: 0 10px 26px rgba(16,32,44,.045); }
.card h3 { margin: 0 0 8px; line-height: 1.2; font-size: 20px; }
.card p { color: var(--muted); margin: 0; }
.icon { width: 42px; height: 42px; border-radius: 14px; background:#e6f5f8; color: var(--primary-dark); display:grid; place-items:center; font-weight:900; margin-bottom: 12px; }
.steps { counter-reset: step; display:grid; gap: 14px; }
.step { counter-increment: step; display:grid; grid-template-columns: 54px 1fr; gap: 14px; background:#fff; border:1px solid var(--line); border-radius: 18px; padding: 18px; }
.step::before { content: counter(step); display:grid; place-items:center; width: 46px; height: 46px; border-radius: 50%; background: var(--primary); color:#fff; font-weight:900; }
.step h3 { margin:0 0 5px; }
.step p { margin:0; color:var(--muted); }
.table-wrap { overflow:auto; border:1px solid var(--line); border-radius: 18px; background:#fff; }
table { border-collapse: collapse; width: 100%; min-width: 680px; }
th, td { text-align:left; border-bottom:1px solid var(--line); padding: 14px 16px; vertical-align:top; }
th { background:#f0f5f8; font-size: 14px; letter-spacing:.02em; text-transform:uppercase; color:#40515e; }
tr:last-child td { border-bottom:0; }
.download-card { display:flex; flex-direction:column; gap: 13px; }
.file-meta { color: var(--muted); font-size: 14px; }
.badge { display:inline-flex; width: fit-content; border-radius: 999px; padding: 5px 9px; font-size: 12px; font-weight: 800; background:#edf9f4; color:#166348; }
.badge.red { background: var(--danger-bg); color: var(--danger); }
.codebox { position:relative; background:#0f1b24; color:#e7f7ff; border-radius:18px; overflow:hidden; border:1px solid #203447; }
.codebox pre { margin:0; max-height: 360px; overflow:auto; padding: 18px; font-size: 13px; line-height: 1.45; }
.copy-btn { position:absolute; top:10px; right:10px; background:#fff; color:#10202c; border:0; border-radius: 10px; padding:8px 10px; font-weight:800; cursor:pointer; }
.faq { display:grid; gap: 12px; }
details { background:#fff; border:1px solid var(--line); border-radius: 16px; padding: 16px 18px; }
summary { cursor:pointer; font-weight:800; }
details p { color:var(--muted); margin-bottom:0; }
.footer { padding: 34px 0; border-top:1px solid var(--line); background:#fff; color:var(--muted); }
.footer-grid { display:grid; grid-template-columns: 1fr auto; gap:18px; align-items:start; }
.small { font-size:14px; color:var(--muted); }
.inline-list { display:flex; flex-wrap:wrap; gap: 10px; padding:0; margin:10px 0 0; list-style:none; }
.inline-list li { background:#fff; border:1px solid var(--line); padding:7px 10px; border-radius:999px; color:var(--muted); font-size:14px; }
@media (max-width: 880px) {
  .hero-grid, .grid.two, .grid.three, .grid.four, .footer-grid { grid-template-columns: 1fr; }
  .nav { align-items:flex-start; padding: 12px 0; }
  .nav-links { justify-content:flex-end; gap: 10px; }
  .nav-links a:not(.nav-cta) { display:none; }
  h1 { letter-spacing: -.045em; }
}