:root {
  color-scheme: light;
  --bg: #f4f7f8;
  --panel: #ffffff;
  --text: #1d252d;
  --muted: #66717d;
  --line: #dce2e8;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --accent-soft: #e4f4f2;
  --blue-soft: #e8f1ff;
  --blue: #2459a8;
  --warn: #8a5a00;
  --shadow: 0 12px 28px rgba(30, 41, 59, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

body {
  margin: 0;
}

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

a:hover {
  text-decoration: underline;
}

.site-header {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 22px;
  display: flex;
  align-items: center;
  gap: 22px;
}

.brand {
  font-weight: 800;
  color: var(--text);
  font-size: 20px;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  font-size: 14px;
}

.nav-actions {
  margin-left: auto;
}

.main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 34px 22px 56px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 28px;
  align-items: start;
}

.eyebrow {
  color: var(--accent-strong);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(34px, 5vw, 58px);
}

h2 {
  font-size: 28px;
  margin-top: 34px;
}

h3 {
  font-size: 20px;
}

p {
  color: var(--muted);
  margin: 0 0 16px;
}

.lead {
  font-size: 18px;
  max-width: 760px;
}

.panel,
.tool-shell,
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.panel {
  padding: 24px;
}

.tool-shell {
  padding: 20px;
}

.tool-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 18px;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 13px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

textarea {
  min-height: 340px;
  resize: vertical;
}

label {
  display: block;
  font-weight: 700;
  margin-bottom: 8px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

button,
.button {
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  padding: 11px 15px;
  cursor: pointer;
  font: inherit;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

button.secondary,
.button.secondary {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

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

.stat {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfcfd;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.stat strong {
  display: block;
  font-size: 24px;
  margin-top: 4px;
  word-break: break-word;
}

.stat.full {
  grid-column: 1 / -1;
}

.tool-tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 18px 0;
}

.tool-tabs a {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-weight: 800;
  padding: 10px;
  text-align: center;
}

.tool-tabs a:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.pill {
  display: inline-flex;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 8px;
}

.pill.ok {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.pill.over {
  background: #ffe8e3;
  color: #9a3412;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 10px;
}

th {
  color: var(--muted);
  font-weight: 800;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.card {
  padding: 18px;
}

.card p {
  font-size: 14px;
}

.content {
  max-width: 860px;
}

.content ul {
  color: var(--muted);
}

.guide-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.guide-list a {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  font-weight: 800;
  padding: 12px 14px;
}

.guide-list a:hover {
  background: var(--accent-soft);
  text-decoration: none;
}

.notice {
  border-left: 4px solid var(--warn);
  background: #fff8e8;
  color: #5c3b00;
  padding: 12px 14px;
  border-radius: 6px;
  margin: 20px 0;
}

.toast {
  background: var(--blue-soft);
  color: var(--blue);
  border: 1px solid #bdd2f5;
  border-radius: 8px;
  padding: 10px 12px;
  margin-top: 12px;
  font-weight: 700;
}

.faq details {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  margin: 10px 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 800;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--panel);
  padding: 28px 22px;
  color: var(--muted);
}

.footer-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.ad-placeholder {
  border: 1px dashed #b8c4cf;
  background: #fbfcfd;
  color: var(--muted);
  border-radius: 8px;
  min-height: 90px;
  display: grid;
  place-items: center;
  font-size: 13px;
  margin: 22px 0;
}

@media (max-width: 860px) {
  .hero,
  .tool-grid,
  .cards {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .nav-actions {
    margin-left: 0;
  }
}