:root {
  --ink: #17313b;
  --muted: #5f7280;
  --line: #dce8e6;
  --panel: #ffffff;
  --soft: #eef8f4;
  --green: #36a853;
  --teal: #0e8792;
  --blue: #075a76;
  --accent: #a6ce39;
  --danger: #b42318;
  --shadow: 0 12px 34px rgba(18, 61, 72, .09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: #f8fbfa;
  line-height: 1.6;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.container { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.top-ad, .ad-box {
  min-height: 72px;
  display: grid;
  place-items: center;
  color: #6d7e86;
  background: #f1f6f5;
  border: 1px dashed #bfd2cf;
  font-size: .88rem;
  text-align: center;
  padding: 12px;
}
.top-ad { border-width: 0 0 1px; }
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 74px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}
.brand img { width: 54px; height: 54px; object-fit: contain; }
.brand span { font-size: 1.28rem; }
.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  color: var(--ink);
  font-size: 1.25rem;
}
.nav-links { display: flex; align-items: center; gap: 18px; font-weight: 700; }
.nav-links a { color: var(--ink); }

.hero {
  padding: 38px 0 26px;
  background: linear-gradient(180deg, #ffffff 0%, #eff9f4 100%);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 32px;
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-weight: 800;
  text-transform: uppercase;
  font-size: .82rem;
}
h1, h2, h3 { line-height: 1.18; margin: 0 0 12px; }
h1 { font-size: clamp(2rem, 6vw, 4rem); max-width: 780px; }
h2 { font-size: clamp(1.55rem, 4vw, 2.35rem); }
h3 { font-size: 1.18rem; }
.lead { font-size: 1.08rem; color: var(--muted); max-width: 720px; margin: 0 0 18px; }
.hero-actions, .tool-actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: #fff;
  font-weight: 800;
}
.button.secondary { background: #fff; color: var(--blue); }
.hero-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}
.hero-card img { display: block; width: 240px; margin: 0 auto 12px; }
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-top: 18px;
}
.stat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}
.stat strong { display: block; color: var(--green); font-size: 1.35rem; }

main { padding: 28px 0 48px; }
.section { padding: 28px 0; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  box-shadow: 0 6px 18px rgba(18, 61, 72, .05);
}
.card p { color: var(--muted); margin: 0 0 12px; }
.badge {
  display: inline-block;
  color: var(--teal);
  background: #e5f6f3;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: .78rem;
  font-weight: 800;
  margin-bottom: 10px;
}
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 24px;
  align-items: start;
}
.content, .sidebar {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}
.sidebar { position: sticky; top: 96px; }
.breadcrumb { color: var(--muted); font-size: .9rem; margin-bottom: 14px; }
.tool-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
  padding: 16px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.field { display: grid; gap: 6px; }
.field.full { grid-column: 1 / -1; }
label { font-weight: 800; }
input, select, textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid #c9d8d6;
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}
textarea { min-height: 130px; resize: vertical; }
.result {
  display: none;
  margin: 16px 0;
  padding: 16px;
  background: #fff;
  border: 2px solid var(--green);
  border-radius: 8px;
}
.result.show { display: block; }
.result strong { color: var(--green); font-size: 1.35rem; }
.note {
  color: var(--muted);
  background: #fff9e8;
  border: 1px solid #f1dea2;
  border-radius: 8px;
  padding: 12px;
}
.article-list { display: grid; gap: 12px; }
.list-clean { padding-left: 20px; }
.site-footer {
  background: #14313a;
  color: #eaf4f2;
  padding: 32px 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(2, .7fr);
  gap: 20px;
}
.site-footer a { color: #eaf4f2; display: block; margin: 6px 0; }
.small { color: #d3e1df; font-size: .9rem; }

@media (max-width: 860px) {
  .menu-toggle { display: inline-grid; place-items: center; }
  .nav-links {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 74px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 16px; border-bottom: 1px solid var(--line); }
  .hero-grid, .layout, .footer-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .sidebar { position: static; }
}

@media (max-width: 560px) {
  .container { width: min(100% - 24px, 1120px); }
  .hero { padding-top: 24px; }
  .grid, .tool-form, .stats { grid-template-columns: 1fr; }
  .brand span { font-size: 1.05rem; }
  .content, .sidebar { padding: 16px; }
}