:root {
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #ffffff;
  --soft: #f9fafb;
  --accent: #4f46e5;
  --accent-ink: #ffffff;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.06);
  --maxw: 1080px;
  font-synthesis: none;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); background: var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6; font-size: 17px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
h1, h2, h3 { line-height: 1.2; color: var(--ink); letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 4.5vw, 2.7rem); margin: 0 0 .4em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.8rem); margin: 2em 0 .6em; }
h3 { font-size: 1.15rem; margin: 1.4em 0 .4em; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* Header */
.site-header { border-bottom: 1px solid var(--line); position: sticky; top: 0; background: rgba(255,255,255,.9); backdrop-filter: blur(8px); z-index: 20; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 62px; }
.brand { font-weight: 800; font-size: 1.1rem; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.brand .dot { width: 26px; height: 26px; border-radius: 7px; background: var(--accent); display: inline-grid; place-items: center; color: #fff; font-size: 15px; }
.nav a { color: var(--muted); font-size: .95rem; margin-left: 20px; }
.nav a:hover { color: var(--ink); }

/* Hero */
.hero { padding: 56px 0 20px; text-align: center; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); max-width: 640px; margin: 0 auto 1.2em; }
.badges { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; color: var(--muted); font-size: .92rem; margin-top: 8px; }
.badges span { display: inline-flex; align-items: center; gap: 6px; }

/* Card grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 18px; margin: 28px 0; }
.card {
  display: block; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; background: var(--bg); box-shadow: var(--shadow); transition: transform .12s ease, box-shadow .12s ease;
  color: var(--ink);
}
.card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 2px 4px rgba(16,24,40,.08), 0 14px 34px rgba(16,24,40,.1); }
.card .emoji { font-size: 30px; }
.card h3 { margin: 10px 0 4px; font-size: 1.1rem; }
.card p { color: var(--muted); font-size: .93rem; margin: 0; }
.card .cat { display: inline-block; margin-top: 12px; font-size: .78rem; color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, white); padding: 2px 9px; border-radius: 999px; font-weight: 600; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; justify-content: center; cursor: pointer;
  border: 1px solid transparent; border-radius: 11px; font-weight: 700; font-size: 1rem;
  padding: 13px 22px; transition: filter .12s ease; text-decoration: none; }
.btn:hover { text-decoration: none; filter: brightness(.96); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-ghost { background: var(--soft); color: var(--ink); border-color: var(--line); }
.btn-buy { background: #111827; color: #fff; }
.btn-lg { padding: 15px 28px; font-size: 1.05rem; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; }

/* Tool layout */
.tool { display: grid; grid-template-columns: 340px 1fr; gap: 30px; margin: 22px 0 10px; align-items: start; }
.tool .panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; background: var(--bg); box-shadow: var(--shadow); position: sticky; top: 82px; }
.field { display: block; font-weight: 600; font-size: .9rem; color: var(--ink); margin-bottom: 14px; }
.field input { display: block; width: 100%; margin-top: 6px; padding: 11px 12px; font-size: 1rem; border: 1px solid var(--line); border-radius: 10px; font-weight: 400; }
.field input:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, white); border-color: var(--accent); }
.preview-wrap { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--soft); box-shadow: var(--shadow); }
#pdf-preview { width: 100%; height: 760px; border: 0; display: block; background: #eef0f3; }
.muted { color: var(--muted); }
.small { font-size: .9rem; }
#buy-note { display:none; margin-top:10px; color: var(--muted); font-size:.9rem; }

/* Premium box */
.premium { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: linear-gradient(180deg, var(--soft), #fff); box-shadow: var(--shadow); margin: 8px 0; }
.premium .price { font-size: 2rem; font-weight: 800; }
.premium ul { margin: 12px 0 18px; padding-left: 20px; color: var(--ink); }
.premium li { margin: 4px 0; }
.premium .price small { font-size: 1rem; color: var(--muted); font-weight: 500; }

/* FAQ */
.faq details { border: 1px solid var(--line); border-radius: 10px; padding: 4px 16px; margin: 10px 0; background: var(--bg); }
.faq summary { cursor: pointer; font-weight: 600; padding: 12px 0; }
.faq details[open] summary { border-bottom: 1px solid var(--line); margin-bottom: 8px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin: 18px 0; }
.step { border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.step .n { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: #fff; font-weight: 800; display: grid; place-items: center; margin-bottom: 10px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 64px; padding: 34px 0; color: var(--muted); font-size: .92rem; }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 30px 60px; justify-content: space-between; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--ink); }
.site-footer h4 { color: var(--ink); font-size: .95rem; margin: 0 0 8px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin: 4px 0; }

.section { margin: 40px 0; }
.pill { display:inline-block; font-size:.8rem; font-weight:700; color:var(--accent); background: color-mix(in srgb, var(--accent) 10%, white); padding:4px 12px; border-radius:999px; }

@media (max-width: 820px) {
  .tool { grid-template-columns: 1fr; }
  .tool .panel { position: static; }
  #pdf-preview { height: 560px; }
}