:root {
  --bg: #fbfcf7;
  --card: #fff;
  --ink: #18221c;
  --muted: #4a5850;
  --line: #dde5df;
  --accent: #286344;
  --accent2: #e8f2ec;
  --warn: #7a4f00;
  --warnbg: #fff6df;
  --danger: #8a2424;
  --dangerbg: #fff0ef;
  --ok: #1e5938;
  --okbg: #eaf6ee;
  --shadow: 0 12px 30px rgba(25, 55, 35, .07);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.62;
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration-thickness: .08em;
  text-underline-offset: .16em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(40, 99, 68, .42);
  outline-offset: 2px;
}

img {
  max-width: 100%;
  height: auto;
}

.wrap {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(251, 252, 247, .94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 68px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -.02em;
  font-size: 1.05rem;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: var(--accent);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 19px;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink);
  font-weight: 650;
  font-size: .96rem;
  padding: 4px 2px;
}

.nav-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.mobile-menu {
  display: none;
}

.hero {
  padding: 56px 0 32px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.06fr .94fr;
  gap: 36px;
  align-items: start;
}

.eyebrow {
  font-size: .84rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

h1, h2, h3 {
  line-height: 1.16;
  letter-spacing: -.03em;
  margin: 0 0 .65em;
}

h1 {
  font-size: clamp(2.15rem, 4.6vw, 4.1rem);
}

h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.25rem);
}

h3 {
  font-size: 1.2rem;
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  max-width: 65ch;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.pill {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: .88rem;
  color: var(--muted);
}

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

.calc-card {
  padding: 24px;
}

.field {
  margin: 0 0 16px;
}

.field label, .legend {
  display: block;
  font-weight: 750;
  margin-bottom: 6px;
  font-size: .96rem;
}

.field small, .help {
  color: var(--muted);
  display: block;
  margin-top: 5px;
  font-size: .88rem;
}

.field input, .field select, .field textarea {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 12px 13px;
  border: 1px solid #c5d1c9;
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}

.field input:focus, .field select:focus, .field textarea:focus {
  outline: 3px solid rgba(40, 99, 68, .18);
  border-color: var(--accent);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.preset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: -6px 0 16px;
}

.preset-btn {
  appearance: none;
  border: 1px solid var(--line);
  background: #f5f8f6;
  color: var(--ink);
  border-radius: 8px;
  padding: 5px 10px;
  font: inherit;
  font-size: .82rem;
  font-weight: 650;
  cursor: pointer;
}

.preset-btn:hover {
  background: var(--accent2);
  border-color: var(--accent);
}

.checkline {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin: 12px 0 16px;
  color: var(--ink);
  font-size: .95rem;
  cursor: pointer;
}

.checkline input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--accent);
  flex-shrink: 0;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 12px;
  padding: 14px 18px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  width: 100%;
  font-size: 1rem;
  text-align: center;
  text-decoration: none;
  display: inline-block;
}

.btn:hover {
  filter: brightness(.95);
}

.btn-secondary {
  background: #fff;
  color: var(--ink);
  border: 1px solid #c5d1c9;
}

.btn-secondary:hover {
  background: #f3f6f2;
}

.result {
  margin-top: 18px;
  border-radius: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  display: none;
}

.result.show {
  display: block;
}

.result.ok {
  background: var(--okbg);
  border-color: #b5dbc1;
}

.result.warn {
  background: var(--warnbg);
  border-color: #e6cf91;
}

.result.danger {
  background: var(--dangerbg);
  border-color: #eabbb7;
}

.result.neutral {
  background: #f3f5f4;
  border-color: #d5ded8;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 3px 9px;
  border-radius: 999px;
  margin-bottom: 8px;
}

.result.ok .status-badge {
  background: #d3ecd9;
  color: var(--ok);
}

.result.warn .status-badge {
  background: #fae8b8;
  color: var(--warn);
}

.result.danger .status-badge {
  background: #fad6d2;
  color: var(--danger);
}

.result.neutral .status-badge {
  background: #e2e7e4;
  color: var(--ink);
}

.result h3 {
  margin-bottom: 6px;
}

.result p {
  margin: .4em 0;
}

.result .big {
  font-weight: 800;
  font-size: 1.06rem;
}

.assumption-note {
  font-size: .92rem;
  background: rgba(255, 255, 255, .65);
  border-left: 3px solid currentColor;
  padding: 8px 12px;
  border-radius: 0 8px 8px 0;
  margin-top: 10px;
}

.source-note {
  font-size: .85rem;
  color: var(--muted);
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid rgba(0, 0, 0, .08);
}

.section {
  padding: 50px 0;
}

.section.alt {
  background: #f3f6f2;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.card {
  padding: 22px;
}

.card p:last-child {
  margin-bottom: 0;
}

.kicker {
  font-size: .88rem;
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 4px;
}

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

.guide-link {
  display: block;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 16px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 750;
  transition: border-color .15s ease, transform .15s ease;
}

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

.guide-link span {
  display: block;
  color: var(--muted);
  font-size: .88rem;
  font-weight: 500;
  margin-top: 4px;
}

.article {
  width: min(780px, 92vw);
  margin: 0 auto;
  padding: 46px 0;
}

.article h1 {
  font-size: clamp(2rem, 4.5vw, 3.35rem);
}

.article h2 {
  margin-top: 1.65em;
}

.article .summary {
  font-size: 1.12rem;
  color: var(--muted);
  border-left: 4px solid var(--accent);
  padding-left: 16px;
}

.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

.table th, .table td {
  border-bottom: 1px solid var(--line);
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
}

.table tr:last-child td {
  border-bottom: 0;
}

.table th {
  font-size: .86rem;
  color: var(--muted);
  background: #f8faf8;
}

.callout {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px 18px;
  background: #fff;
  margin: 18px 0;
}

.callout.warn {
  background: var(--warnbg);
  border-color: #e6cf91;
}

.callout.danger {
  background: var(--dangerbg);
  border-color: #eabbb7;
}

.cta-box {
  border: 1px solid #c3d9cc;
  background: #eff7f2;
  border-radius: 14px;
  padding: 18px 20px;
  margin: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.cta-box p {
  margin: 0;
  font-weight: 650;
}

.cta-box .btn {
  width: auto;
  padding: 11px 18px;
}

.breadcrumbs {
  font-size: .9rem;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 34px 0 44px;
  color: var(--muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 24px;
}

.footer a {
  color: var(--muted);
}

.link-btn {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  color: var(--muted);
  font: inherit;
  font-size: inherit;
  text-decoration: underline;
  text-decoration-thickness: .08em;
  text-underline-offset: .16em;
  cursor: pointer;
}

.small {
  font-size: .9rem;
}

.notice {
  font-size: .92rem;
  color: var(--muted);
  background: #fff;
  border: 1px solid var(--line);
  padding: 12px 14px;
  border-radius: 12px;
}

.skip {
  position: absolute;
  left: -9999px;
}

.skip:focus {
  left: 12px;
  top: 12px;
  background: #fff;
  padding: 10px 14px;
  border-radius: 8px;
  border: 2px solid var(--accent);
  z-index: 999;
}

.status-dot {
  display: inline-block;
  width: .7em;
  height: .7em;
  border-radius: 50%;
  background: currentColor;
  margin-right: .35em;
}

.tag {
  display: inline-block;
  font-size: .78rem;
  font-weight: 800;
  background: var(--accent2);
  color: var(--accent);
  padding: 4px 10px;
  border-radius: 999px;
  margin-right: 6px;
  margin-bottom: 8px;
}

.source-list li, .mistake-list li {
  margin-bottom: .65em;
}

.qa {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}

.qa:first-child {
  border-top: 0;
}

.qa h3 {
  margin-bottom: .35em;
}

/* Reusable Ad Slot Component (fail-safe collapsed by default) */
.ad-slot {
  display: none;
  margin: 24px auto;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f5f7f4;
  text-align: center;
  max-width: 100%;
  overflow: hidden;
}

.ad-slot.ad-active {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ad-slot-label {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: 6px;
  user-select: none;
}

.ad-slot iframe {
  border: 0;
  max-width: 100%;
  display: block;
  margin: 0 auto;
}

/* Consent Banner */
.consent-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 60;
  background: #fff;
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 28px rgba(24, 34, 28, .1);
  padding: 14px 0;
}

.consent-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.consent-text {
  font-size: .88rem;
  color: var(--ink);
  max-width: 68ch;
  margin: 0;
}

.consent-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.consent-actions .btn {
  width: auto;
  padding: 8px 14px;
  font-size: .86rem;
  border-radius: 9px;
}

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

@media (max-width: 800px) {
  .hero {
    padding-top: 28px;
  }
  .hero-grid, .grid-3, .grid-2, .guide-list, .footer-grid {
    grid-template-columns: 1fr;
  }
  .nav {
    gap: 6px;
    padding: 10px 0;
    min-height: auto;
  }
  .nav-links {
    width: 100%;
    gap: 6px 14px;
    padding-top: 6px;
    border-top: 1px solid var(--line);
    font-size: .9rem;
  }
  .field-row {
    grid-template-columns: 1fr;
  }
  h1 {
    font-size: clamp(1.85rem, 8.5vw, 2.8rem);
  }
  .article h1 {
    font-size: clamp(1.75rem, 8vw, 2.6rem);
  }
  .section {
    padding: 36px 0;
  }
  .calc-card, .card {
    padding: 16px;
  }
  .cta-box {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-box .btn {
    width: 100%;
  }
}

@media print {
  .site-header, .footer, .btn, .ad-slot, .consent-banner, .preset-row {
    display: none !important;
  }
  .article {
    width: 100%;
    padding: 0;
  }
  .card, .calc-card {
    box-shadow: none;
  }
}