:root {
  --bg: #f3f6f8;
  --surface: #ffffff;
  --surface-muted: #eaf0f4;
  --text: #1f2b33;
  --text-soft: #4b5c67;
  --primary: #0d5d78;
  --primary-dark: #0a475c;
  --accent: #3b8ea5;
  --danger: #ad2e2e;
  --ok: #1f7a4d;
  --border: #d4dde3;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(19, 44, 58, 0.08);
  --container: 1140px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: radial-gradient(circle at top right, #f9fcff 0%, var(--bg) 45%, #ebf1f5 100%);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.logo img {
  width: 180px;
  height: 42px;
  display: block;
}

.nav-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem 0.7rem;
  font-size: 0.95rem;
  display: none;
}

.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0;
  margin: 0;
}

.main-nav a,
.main-nav summary {
  display: inline-block;
  padding: 0.35rem 0.4rem;
  border-radius: 8px;
  color: var(--text);
  cursor: pointer;
  font: inherit;
  list-style: none;
}

.main-nav a.active,
.main-nav a:hover,
.main-nav summary.active-parent,
.main-nav summary:hover {
  background: var(--surface-muted);
  text-decoration: none;
}

.main-nav summary::-webkit-details-marker {
  display: none;
}

.has-submenu {
  position: relative;
}

.submenu {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 0.45rem);
  min-width: 220px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 0.5rem;
  z-index: 20;
}

.has-submenu[open] > .submenu {
  display: block;
}

.submenu li {
  margin: 0;
}

.submenu a {
  display: block;
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
}

.nav-cta-item {
  margin-left: auto;
}

.main-nav .nav-cta {
  padding: 0.6rem 0.95rem;
}

.main-nav .nav-cta.active {
  background: var(--primary-dark);
  color: #fff;
}

.hero {
  padding: 4rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1.25fr 1fr;
}

.hero-card {
  background: linear-gradient(155deg, #dff1f8 0%, #f8fcff 45%, #e8f2f7 100%);
  border: 1px solid #cee3ed;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero h1 {
  margin-top: 0;
  line-height: 1.2;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.hero-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  margin-bottom: 0.8rem;
  display: inline-block;
  background: #edf4f8;
}

.lead {
  font-size: 1.08rem;
  color: var(--text-soft);
}

.cta-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.3rem;
}

.btn {
  display: inline-block;
  border-radius: 10px;
  padding: 0.72rem 1rem;
  font-weight: 600;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  text-decoration: none;
}

.btn-secondary {
  border-color: var(--border);
  background: var(--surface);
  color: var(--text);
}

.badge-list,
.card-grid,
.target-grid,
.feature-grid {
  display: grid;
  gap: 1rem;
}

.badge-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
  font-weight: 600;
  font-size: 0.95rem;
}

section {
  padding: 2.4rem 0;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.4rem, 2.3vw, 1.95rem);
}

.section-intro {
  color: var(--text-soft);
  max-width: 72ch;
}

.card-grid,
.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.feature,
.info-box,
.form-shell {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.card h3,
.feature h3 {
  margin-top: 0;
}

.icon-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.icon-title .mini-icon {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
}

.card p,
.feature p {
  margin-bottom: 0;
  color: var(--text-soft);
}

.target-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.list-clean {
  padding-left: 1rem;
  margin: 0.5rem 0 0;
}

.list-clean li {
  margin-bottom: 0.35rem;
}

.notice {
  border-left: 4px solid var(--accent);
  background: #edf6fa;
  padding: 1rem;
  border-radius: 10px;
  color: #173845;
}

.form-layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group.full {
  grid-column: 1 / -1;
}

label {
  font-weight: 600;
  font-size: 0.95rem;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.68rem 0.75rem;
  font: inherit;
  background: #fff;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}

.checkbox-row input {
  width: auto;
  margin-top: 0.2rem;
}

.hp-field {
  position: absolute;
  left: -10000px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.message {
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 1rem;
}

.message.success {
  background: #ebf8f1;
  color: var(--ok);
  border: 1px solid #b8e0cb;
}

.message.error {
  background: #faecec;
  color: var(--danger);
  border: 1px solid #e6bcbc;
}

.site-footer {
  margin-top: 2rem;
  background: #132c3a;
  color: #d8e5ed;
  padding: 2rem 0;
}

.footer-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 2fr 1fr 1fr;
}

.site-footer a {
  color: #f4fbff;
}

.small {
  font-size: 0.92rem;
  color: var(--text-soft);
}

.footer-meta {
  margin-top: 1.1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.footer-note {
  font-size: 0.87rem;
  color: #9eb6c4;
}

.footer-copyright {
  font-size: 0.87rem;
  color: #c8d9e3;
  white-space: nowrap;
  text-align: right;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--border);
  text-align: left;
  padding: 0.65rem;
}

@media (max-width: 960px) {
  .hero-grid,
  .card-grid,
  .feature-grid,
  .footer-grid,
  .target-grid {
    grid-template-columns: 1fr;
  }

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

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

  .nav-toggle {
    display: inline-block;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    gap: 0.4rem;
    padding-top: 0.6rem;
    align-items: stretch;
  }

  .has-submenu {
    position: static;
  }

  .has-submenu summary {
    width: 100%;
  }

  .submenu {
    display: none;
    position: static;
    min-width: 0;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    background: transparent;
    padding: 0.25rem 0 0.25rem 0.7rem;
  }

  .has-submenu[open] > .submenu {
    display: block;
  }

  .submenu a {
    padding: 0.35rem 0.4rem;
  }

  .nav-cta-item {
    margin-left: 0;
  }

  .header-inner {
    flex-wrap: wrap;
  }

  .logo img {
    width: 160px;
    height: 37px;
  }

  .footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-copyright {
    text-align: left;
  }
}