* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: linear-gradient(135deg, #d8ecff 0%, #f4f7fb 45%, #eef9f1 100%);
  color: #1c2833;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid #d4dee8;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
}

.header-inner {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  gap: 22px;
}

.brand {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.4px;
  color: #0b7d52;
  text-decoration: none;
}

.main-nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  position: relative;
}

.main-nav a {
  color: #305067;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.94rem;
}

.main-nav a:hover {
  color: #0b7d52;
}

.hover-tools {
  position: relative;
}

.hover-trigger {
  display: inline-block;
  border: 1px solid #bdd0e2;
  background: #f2f8ff;
  color: #28465c;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: default;
}

.hover-panel {
  position: absolute;
  left: 0;
  top: 100%;
  width: min(900px, 90vw);
  padding: 14px;
  border: 1px solid #c3d5e6;
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 16px 36px rgba(20, 42, 61, 0.15);
  display: none;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  z-index: 30;
}

.hover-tools:hover .hover-panel {
  display: grid;
}

.hover-tools:focus-within .hover-panel {
  display: grid;
}

.hover-col h4 {
  margin: 0 0 8px;
  color: #2f4f65;
  font-size: 0.9rem;
}

.hover-col a {
  display: block;
  color: #3f5f75;
  text-decoration: none;
  padding: 4px 0;
  font-size: 0.88rem;
}

.hover-col a:hover {
  color: #0b7d52;
}

.nav-select {
  border: 1px solid #bfd0e2;
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  min-width: 210px;
}

.page {
  width: min(1200px, 100%);
  margin: 0 auto;
  padding: 20px;
}

.with-rails {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr) 220px;
  gap: 16px;
}

.center-column {
  min-width: 0;
}

.rail {
  display: grid;
  gap: 12px;
  align-content: start;
}

.ad-top {
  display: grid;
  place-items: center;
  min-height: 96px;
  border: 1px dashed #8ca6bc;
  background: #f3f8ff;
  color: #4b6073;
  border-radius: 10px;
  margin-bottom: 18px;
}

.ad-inline {
  margin-bottom: 18px;
  min-height: 180px;
}

.hero-card,
.feature-card,
.tool-card,
.ad-box,
.error {
  border: 1px solid #d8e1eb;
  border-radius: 12px;
  background: #ffffff;
}

.hero-card {
  padding: 28px;
  margin-bottom: 18px;
  box-shadow: 0 20px 40px rgba(28, 40, 51, 0.08);
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.subtitle {
  margin: 0 0 14px;
  color: #4b6073;
}

.cta-link {
  display: inline-block;
  margin-top: 8px;
  border-radius: 10px;
  padding: 11px 16px;
  background: #0b7d52;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
}

.home-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.category-block {
  margin-bottom: 16px;
}

.category-block > h2 {
  margin: 0 0 10px;
  color: #27465b;
}

.feature-card {
  padding: 16px;
}

.feature-card h2 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.feature-card p {
  margin: 0;
  color: #4b6073;
}

.feature-card .desc {
  margin-bottom: 8px;
}

.feature-link {
  color: #0b7d52;
  font-weight: 700;
  text-decoration: none;
}

.top5-block {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid #d8e1eb;
  border-radius: 10px;
  background: #f9fcff;
}

.top5-block h2 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.top5-block ol {
  margin: 0;
  padding-left: 20px;
}

.top5-buttons {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.top5-btn {
  display: block;
  border: 1px solid #b8d2ea;
  border-radius: 10px;
  padding: 10px 12px;
  background: linear-gradient(180deg, #f4fbff 0%, #eaf5ff 100%);
  color: #114766;
  text-decoration: none;
  font-weight: 700;
}

.top5-btn:hover {
  background: linear-gradient(180deg, #e8f6ff 0%, #dbedff 100%);
  color: #0b7d52;
}

.quick-jump {
  margin-top: 10px;
  margin-bottom: 8px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.tool-card {
  padding: 16px;
}

.tool-card h2 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.tool-card form {
  display: grid;
  gap: 10px;
}

.detail-card {
  padding: 20px;
}

.home-ads-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.ad-wall {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.ad-box {
  min-height: 140px;
  padding: 12px;
  display: grid;
  place-items: center;
  border-style: dashed;
  color: #4b6073;
  text-align: center;
}

.ad-tall {
  min-height: 300px;
}

.ad-wide {
  grid-column: span 2;
}

.error {
  margin-bottom: 14px;
  padding: 10px 12px;
  background: #fde6e8;
  border-color: #f1b8bf;
  color: #7a1f2b;
}

.global-error {
  margin-top: 4px;
}

.label {
  font-weight: 600;
  font-size: 0.94rem;
}

.row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

input[type="file"],
input[type="text"],
input[type="password"],
input[type="number"],
select {
  width: 100%;
  border: 1px solid #bfd0e2;
  border-radius: 8px;
  padding: 10px;
  font-size: 0.95rem;
  background: #fff;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 11px 14px;
  background: #0b7d52;
  color: white;
  font-size: 0.98rem;
  font-weight: 700;
  cursor: pointer;
}

.hint {
  margin: 10px 0 0;
  color: #6a7785;
  font-size: 0.88rem;
}

@media (max-width: 980px) {
  .with-rails {
    grid-template-columns: 1fr;
  }

  .rail {
    display: none;
  }

  .tools-grid,
  .home-grid,
  .home-ads-grid,
  .ad-wall,
  .top5-buttons {
    grid-template-columns: 1fr;
  }

  .ad-wide {
    grid-column: span 1;
  }
}

@media (max-width: 680px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    width: 100%;
    gap: 10px;
  }

  .nav-select {
    width: 100%;
    min-width: 0;
  }

  .hover-tools {
    width: 100%;
  }

  .hover-trigger {
    display: block;
    width: 100%;
  }

  .hover-panel {
    position: static;
    width: 100%;
    grid-template-columns: 1fr;
    margin-top: 8px;
  }

  .page {
    padding: 14px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .hero-card {
    padding: 22px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}