:root {
  --ink: #1c1917;
  --muted: #57534e;
  --bg: #F8FAFC;
  --card: #ffffff;
  --line: #e7e0d4;
  --accent: #145a4c;
  --accent-ink: #0b3d34;
  --btn: #015089;
  --btn-hover: #013e6b;
  --link: #0f5c4e;
  --under: #1e4e8c;
  --normal: #1b5e3b;
  --over: #9a3412;
  --obese: #9b1c1c;
  --focus: #145a4c;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  font-size: 1.0625rem;
}
img, svg { max-width: 100%; }
a {
  color: var(--link);
  text-underline-offset: 0.12em;
}
a:hover { color: var(--accent-ink); }
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: #fff;
  padding: 0.5rem 0.75rem;
  z-index: 20;
}
.skip:focus { top: 0.75rem; }

.wrap {
  width: min(75rem, calc(100% - 2rem));
  margin-inline: auto;
}
.wrap--wide { width: min(75rem, calc(100% - 2rem)); }

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3.6rem;
  width: min(75rem, calc(100% - 2rem));
  margin-inline: auto;
}
.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  color: var(--accent-ink);
  text-decoration: none;
}
.brand-logo {
  display: block;
  height: 2.45rem;
  width: auto;
}
.site-footer .brand-logo { height: 2.1rem; }
.brand:hover { opacity: 0.88; }
.nav-desktop {
  display: none;
  gap: 0.2rem 0.95rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav-desktop a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-desktop a:hover,
.nav-desktop a[aria-current="page"] { color: var(--accent); text-decoration: underline; }
.nav-mobile { display: block; position: relative; }
.nav-mobile > summary {
  list-style: none;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.35rem 0.2rem;
}
.nav-mobile > summary::-webkit-details-marker { display: none; }
.nav-mobile[open] > summary { color: var(--accent); }
.nav-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 0.35rem);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(28, 25, 23, 0.08);
  min-width: 14rem;
  padding: 0.6rem;
  z-index: 30;
  display: grid;
  gap: 0.35rem;
}
.nav-panel a {
  text-decoration: none;
  color: var(--ink);
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
  font-size: 0.92rem;
}
.nav-panel a:hover { background: var(--bg); }
@media (min-width: 980px) {
  .nav-desktop { display: flex; }
  .nav-mobile { display: none; }
}

.hero {
  padding: 1.1rem 0 0.4rem;
}
h1 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.55rem, 2.4vw, 2rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}
.lead {
  margin: 0 0 1rem;
  font-size: 1.05rem;
}
.crumbs {
  font-size: 0.86rem;
  color: var(--muted);
  margin: 0.85rem 0 0;
}
.crumbs ol {
  list-style: none;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}
.crumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.4rem;
  color: #a8a29e;
}

.calc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem 1rem 1.15rem;
  box-shadow: 0 1px 0 rgba(28, 25, 23, 0.04);
}
.calc-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr 1fr;
}
.calc-grid .span-2 { grid-column: 1 / -1; }
label {
  display: block;
  font-size: 0.86rem;
  font-weight: 650;
  margin-bottom: 0.25rem;
}
.hint {
  display: block;
  font-weight: 400;
  color: var(--muted);
  font-size: 0.78rem;
}
input[type="number"],
input[type="email"],
input[type="text"] {
  width: 100%;
  border: 1px solid #d6cbb8;
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  font: inherit;
  background: #fff;
}
.radios {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  font-size: 0.92rem;
  font-weight: 500;
}
.radios label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 500;
  margin: 0;
}
.btn {
  border: 0;
  background: var(--btn);
  color: #fff;
  font: inherit;
  font-weight: 650;
  border-radius: 10px;
  padding: 0.6rem 1rem;
  cursor: pointer;
}
.btn:hover { background: var(--btn-hover); }
.calc-actions { margin-top: 0.85rem; }

.calc-error {
  color: var(--obese);
  margin: 0.65rem 0 0;
  font-size: 0.92rem;
}

.result {
  min-height: 17.5rem;
  margin-top: 0.9rem;
  padding: 0.85rem 0.2rem 0.2rem;
  border-top: 1px solid var(--line);
}
.result:not([data-ready="1"]) [data-bmi-adult] { display: none; }
.cookie-card .cookie-title,
.cookie-card h2 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.bmi-number {
  font-size: 3rem;
  font-weight: 750;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0.15rem 0 0.25rem;
}
.bmi-number[data-class="under"],
.bmi-class[data-class="under"] { color: var(--under); }
.bmi-number[data-class="normal"],
.bmi-class[data-class="normal"] { color: var(--normal); }
.bmi-number[data-class="over"],
.bmi-class[data-class="over"] { color: var(--over); }
.bmi-number[data-class="ob1"],
.bmi-number[data-class="ob2"],
.bmi-number[data-class="ob3"],
.bmi-class[data-class="ob1"],
.bmi-class[data-class="ob2"],
.bmi-class[data-class="ob3"] { color: var(--obese); }
.bmi-class {
  font-weight: 700;
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}
.result p { margin: 0.4rem 0; }
.gauge {
  display: block;
  width: 100%;
  height: 42px;
  margin: 0.35rem 0 0.7rem;
}
.fineprint {
  font-size: 0.82rem;
  color: var(--muted);
}
.note {
  background: #eef6f3;
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  font-size: 0.92rem;
}
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 0.5rem 0;
}
.pair-box {
  background: var(--bg);
  border-radius: 10px;
  padding: 0.6rem 0.7rem;
}
.pair-box strong { display: block; font-size: 1.35rem; }

.toc {
  margin: 1.4rem 0 0.4rem;
  padding: 0.9rem 1rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.toc h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}
.toc ol {
  margin: 0;
  padding-left: 1.15rem;
  columns: 1;
  gap: 1.5rem;
}
.toc a { text-decoration: none; }
@media (min-width: 720px) {
  .toc ol { columns: 2; }
}

.prose { padding-bottom: 3rem; }
.prose h2 {
  margin: 2.1rem 0 0.7rem;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}
.prose h3 {
  margin: 1.3rem 0 0.45rem;
  font-size: 1.08rem;
}
.prose p { margin: 0 0 0.8rem; }
.prose ul, .prose ol { margin: 0 0 0.9rem; padding-left: 1.2rem; }
.prose li { margin: 0.25rem 0; }
.box {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin: 0 0 1rem;
}
.backtop {
  display: none;
  font-size: 0.84rem;
  margin: 0 0 0.4rem;
}
@media (max-width: 720px) {
  .backtop { display: inline-block; }
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
caption {
  text-align: left;
  font-weight: 650;
  padding: 0.7rem 0.8rem 0.35rem;
}
th, td {
  border-top: 1px solid var(--line);
  padding: 0.5rem 0.8rem;
  text-align: left;
  vertical-align: top;
}
th { background: #faf7f2; font-weight: 650; }
.dl dt { font-weight: 700; margin-top: 0.7rem; }
.dl dd { margin: 0.15rem 0 0.45rem; }
@media (min-width: 980px) {
  #sanasto ~ .dl {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 2.75rem;
    row-gap: 0.25rem;
    align-items: start;
  }
  #sanasto ~ .dl > div:nth-child(-n+2) dt {
    margin-top: 0;
  }
}

.site-footer {
  background: #fff;
  border-top: 1px solid var(--line);
  padding: 2rem 0 1.4rem;
  font-size: 0.92rem;
}
.footer-grid {
  width: min(75rem, calc(100% - 2rem));
  margin-inline: auto;
  display: grid;
  gap: 1.4rem;
  grid-template-columns: 1fr;
}
.site-footer h2 {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.32rem;
}
.site-footer a { text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-copy {
  width: min(75rem, calc(100% - 2rem));
  margin: 1.4rem auto 0;
  color: var(--muted);
  font-size: 0.84rem;
}
@media (min-width: 720px) {
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr 1fr; }
}

.cookie-banner {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  width: min(22rem, calc(100vw - 2rem));
}
.cookie-banner[hidden] { display: none !important; }
.cookie-card {
  background: rgba(255, 255, 255, 0.97);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(28, 25, 23, 0.12);
  padding: 0.9rem 1rem;
}
.cookie-card h2 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}
.cookie-card p {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--muted);
}
.cookie-actions {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.45rem;
}
.cookie-actions .btn {
  flex: 1 1 0;
  padding: 0.5rem 0.55rem;
  font-size: 0.82rem;
}
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
}
.cookie-settings-btn {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 49;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(28, 25, 23, 0.1);
}
.cookie-settings-btn[hidden] { display: none !important; }

@media (max-width: 640px) {
  .cookie-banner {
    left: 0.55rem;
    right: 0.55rem;
    bottom: 0.55rem;
    width: auto;
  }
  .cookie-card {
    padding: 0.6rem 0.7rem;
    border-radius: 12px;
    box-shadow: 0 8px 22px rgba(28, 25, 23, 0.12);
  }
  .cookie-card .cookie-title,
  .cookie-card h2 {
    font-size: 0.88rem;
    margin: 0 0 0.2rem;
  }
  .cookie-card p {
    font-size: 0.76rem;
    line-height: 1.35;
    margin: 0 0 0.5rem;
  }
  .cookie-actions {
    gap: 0.3rem;
  }
  .cookie-actions .btn {
    padding: 0.38rem 0.35rem;
    font-size: 0.72rem;
    border-radius: 8px;
    line-height: 1.2;
    text-align: center;
    min-width: 0;
  }
  .cookie-settings-btn {
    right: 0.55rem;
    bottom: 0.55rem;
    width: 2.3rem;
    height: 2.3rem;
  }
}

.sources { font-size: 0.92rem; }
.sources h2 { font-size: 1.2rem; }

.iso-cta {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  margin: 0.8rem 0 0;
}
.iso-cta a.btn { display: inline-block; text-decoration: none; margin-top: 0.4rem; }