:root {
  color-scheme: light;
  --ink: #1f2933;
  --muted: #5b6877;
  --line: #d9e2ec;
  --panel: #ffffff;
  --soft: #f6f8fb;
  --accent: #007c89;
  --accent-2: #d9480f;
  --focus: #f5b841;
  --shadow: 0 18px 50px rgba(31, 41, 51, .08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  background: linear-gradient(180deg, #eef5f6 0, #f8fafc 300px, #fff 100%);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(16px, 5vw, 56px);
  background: rgba(255, 255, 255, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}

.brand-logo {
  display: block;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  box-shadow: 0 8px 18px rgba(19, 33, 43, .16);
}

.top-nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  font-size: 14px;
}

.top-nav a,
.mobile-panel a,
.side-rail a,
.site-footer a {
  text-decoration: none;
}

.top-nav a:hover,
.side-rail a:hover,
.site-footer a:hover {
  color: var(--accent);
}

.menu-button {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 8px 12px;
  font-weight: 700;
}

.mobile-panel {
  display: none;
  padding: 8px 16px 16px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.mobile-panel.is-open {
  display: grid;
  gap: 8px;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(210px, 260px) minmax(0, 920px);
  gap: 28px;
  width: min(1240px, calc(100% - 32px));
  margin: 28px auto 48px;
  align-items: start;
}

.side-rail {
  position: sticky;
  top: 82px;
  display: grid;
  gap: 16px;
}

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

.rail-card {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.rail-title {
  margin: 0 0 4px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.rail-card a {
  color: var(--muted);
  font-size: 14px;
}

.content {
  display: grid;
  gap: 18px;
}

.ad-slot {
  display: grid;
  place-items: center;
  min-height: 92px;
  border: 1px dashed #a9b8c8;
  border-radius: 8px;
  background: repeating-linear-gradient(135deg, #f8fafc, #f8fafc 12px, #eef3f7 12px, #eef3f7 24px);
  color: #6b7785;
  font-size: 13px;
  letter-spacing: .02em;
}

.ad-slot.vertical {
  min-height: 280px;
}

.mobile-inline-ad {
  display: none;
}

.tool-surface {
  overflow: hidden;
}

.tool-hero {
  padding: clamp(22px, 4vw, 38px);
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 6vw, 54px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lede {
  max-width: 680px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.tool-body {
  display: grid;
  gap: 20px;
  padding: clamp(18px, 4vw, 34px);
}

.form-panel {
  display: grid;
  gap: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

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

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid #b8c5d2;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
  font: inherit;
}

input:focus,
select:focus,
button:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(245, 184, 65, .55);
  outline-offset: 2px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.primary-btn,
.secondary-btn {
  min-height: 44px;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 800;
  cursor: pointer;
}

.primary-btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}

.secondary-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
}

.result-card {
  display: grid;
  gap: 16px;
  padding: 20px;
  border: 1px solid #b7dfe3;
  border-radius: 8px;
  background: #f0fbfc;
}

.result-title {
  margin: 0;
  font-size: 22px;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  min-height: 94px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1;
}

.share-row,
.related-links,
.quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-link {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}

.info-grid {
  display: grid;
  gap: 18px;
}

.info-card {
  padding: clamp(18px, 3vw, 28px);
}

.info-card h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

.info-card p,
.info-card li {
  color: var(--muted);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 26px clamp(16px, 5vw, 56px);
  border-top: 1px solid var(--line);
  background: #111827;
  color: #fff;
}

.site-footer p {
  max-width: 560px;
  margin: 8px 0 0;
  color: #cbd5e1;
}

.site-footer nav {
  display: flex;
  gap: 16px;
  align-items: start;
}

.footer-link {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
  font: inherit;
  cursor: pointer;
}

.footer-link:hover {
  color: var(--accent);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, .58);
}

.modal-backdrop[hidden] {
  display: none;
}

.modal-panel {
  position: relative;
  width: min(560px, 100%);
  max-height: min(760px, calc(100vh - 40px));
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 24px;
  box-shadow: 0 24px 70px rgba(15, 23, 42, .28);
}

.modal-panel h2 {
  margin: 0 0 12px;
  font-size: 28px;
}

.modal-panel h3 {
  margin: 18px 0 8px;
  font-size: 18px;
}

.modal-panel p {
  color: var(--muted);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

@media (max-width: 860px) {
  .top-nav,
  .side-rail {
    display: none;
  }

  .menu-button {
    display: inline-flex;
  }

  .page-shell {
    display: block;
    width: min(100% - 24px, 720px);
    margin-top: 18px;
  }

  .content {
    display: flex;
    flex-direction: column;
  }

  .tool-surface {
    order: 1;
  }

  .content > .ad-slot.banner {
    order: 2;
  }

  .info-grid {
    order: 3;
    margin-top: 18px;
  }

  .tool-hero {
    padding: 20px 22px 18px;
  }

  h1 {
    font-size: clamp(30px, 9vw, 40px);
  }

  .lede {
    margin-top: 10px;
    font-size: 16px;
  }

  .tool-body {
    padding: 18px;
    gap: 14px;
  }

  .form-panel {
    padding: 16px;
  }

  .mobile-inline-ad {
    display: grid;
    min-height: 56px;
  }

  .primary-btn,
  .secondary-btn {
    flex: 1 1 140px;
  }

  .form-grid,
  .form-grid.two,
  .metric-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    display: grid;
  }
}