:root {
  color-scheme: light;
  --ink: #10233f;
  --muted: #52627a;
  --line: #d8e2ec;
  --paper: #ffffff;
  --wash: #f4f8fb;
  --blue: #1769e0;
  --blue-dark: #0d4eae;
  --aqua: #0f806f;
  --aqua-soft: #e4f8f3;
  --warning: #8a4b00;
  --warning-soft: #fff4df;
  --danger: #a22a2a;
  --shadow: 0 18px 55px rgba(16, 35, 63, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--wash);
  color: var(--ink);
  font: 16px/1.65 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
a { color: var(--blue-dark); text-underline-offset: 0.18em; }
a:hover { color: var(--blue); }
button, input, select, textarea { font: inherit; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: #edf2f7; border-radius: 0.3rem; padding: 0.08rem 0.3rem; }
img { max-width: 100%; }

.shell { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  background: var(--paper);
  border: 2px solid var(--blue);
  border-radius: 0.4rem;
  padding: 0.6rem 0.9rem;
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(16, 35, 63, 0.97);
  color: white;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: white; font-size: 1.18rem; font-weight: 800; text-decoration: none; }
.brand:hover { color: white; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.3rem;
  height: 2.3rem;
  border-radius: 0.65rem;
  background: var(--aqua-soft);
  color: var(--aqua);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
.site-nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0.35rem 1.1rem; }
.site-nav a { color: #dce8f5; font-weight: 650; text-decoration: none; }
.site-nav a:hover { color: white; }

main.shell { padding-block: 2.5rem 4.5rem; }
h1, h2, h3 { line-height: 1.18; letter-spacing: -0.025em; }
h1 { margin: 0 0 1rem; font-size: clamp(2.15rem, 6vw, 4.4rem); }
h2 { margin: 2.1rem 0 0.8rem; font-size: clamp(1.45rem, 3.4vw, 2rem); }
h3 { margin: 1.5rem 0 0.45rem; font-size: 1.18rem; }
p { margin: 0.65rem 0 1rem; }
ul, ol { padding-left: 1.35rem; }
li + li { margin-top: 0.45rem; }
.eyebrow { margin: 0 0 0.65rem; color: var(--aqua); font-size: 0.78rem; font-weight: 850; letter-spacing: 0.14em; text-transform: uppercase; }
.lede { max-width: 760px; color: var(--muted); font-size: clamp(1.06rem, 2.2vw, 1.28rem); }
.review-date { color: var(--muted); font-size: 0.9rem; }
.muted { color: var(--muted); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr);
  gap: 2rem;
  align-items: stretch;
  padding-block: 1.5rem 2rem;
}
.hero-copy {
  padding: clamp(1.1rem, 3vw, 2.5rem) 0;
  align-self: center;
}
.hero-copy h1 { max-width: 800px; }
.ip-card, .content-card, .tool-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}
.ip-card { padding: clamp(1.3rem, 3vw, 2rem); display: flex; flex-direction: column; justify-content: center; }
.ip-label { color: var(--muted); font-size: 0.92rem; font-weight: 700; }
.ip-value { overflow-wrap: anywhere; margin: 0.3rem 0 1rem; color: var(--blue-dark); font: 750 clamp(1.7rem, 5vw, 2.55rem)/1.15 ui-monospace, SFMono-Regular, Menlo, monospace; }
.ip-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; margin: 1rem 0; }
.ip-meta div { background: var(--wash); border-radius: 0.65rem; padding: 0.75rem; }
.ip-meta dt { color: var(--muted); font-size: 0.78rem; font-weight: 750; text-transform: uppercase; }
.ip-meta dd { margin: 0.2rem 0 0; font-weight: 700; overflow-wrap: anywhere; }
.privacy-note { color: var(--muted); font-size: 0.87rem; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 42px;
  border: 1px solid var(--blue);
  border-radius: 0.55rem;
  background: var(--blue);
  color: white;
  cursor: pointer;
  font-weight: 750;
  padding: 0.6rem 1rem;
  text-decoration: none;
}
.button:hover { background: var(--blue-dark); color: white; }
.button-secondary { background: var(--paper); color: var(--blue-dark); }
.button-secondary:hover { background: #eef5ff; color: var(--blue-dark); }

.content-card { margin-top: 1.5rem; padding: clamp(1.25rem, 3vw, 2.35rem); }
.content-card > :first-child { margin-top: 0; }
.content-card > :last-child { margin-bottom: 0; }
.answer-box { margin: 1.25rem 0 1.75rem; border-left: 4px solid var(--aqua); background: var(--aqua-soft); padding: 1rem 1.2rem; }
.answer-box > :first-child { margin-top: 0; }
.answer-box > :last-child { margin-bottom: 0; }
.article { max-width: 880px; margin-inline: auto; }
.article h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
.sources, .related { max-width: 880px; margin-inline: auto; }
.sources { font-size: 0.94rem; }
.source-list { padding-left: 1.15rem; }
.callout { border: 1px solid #aadfd4; border-radius: 0.7rem; background: #f1fbf8; padding: 1rem 1.15rem; }
.warning { border-color: #efcf95; background: var(--warning-soft); color: #573000; }

.quick-grid, .card-grid, .comparison-grid { display: grid; gap: 1rem; }
.quick-grid { grid-template-columns: repeat(3, 1fr); }
.card-grid { grid-template-columns: repeat(2, 1fr); }
.comparison-grid { grid-template-columns: repeat(3, 1fr); }
.mini-card { border: 1px solid var(--line); border-radius: 0.75rem; background: #fbfdff; padding: 1.05rem; }
.mini-card h3 { margin-top: 0; }
.mini-card p:last-child { margin-bottom: 0; }

.table-wrap { overflow-x: auto; margin: 1rem 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.table-wrap table { min-width: 620px; }
th, td { border-bottom: 1px solid var(--line); padding: 0.75rem; text-align: left; vertical-align: top; }
th { background: #edf4fa; color: var(--ink); }

.tool-layout { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 1.2rem; align-items: start; }
.tool-card { padding: clamp(1.2rem, 3vw, 2rem); }
.tool-card h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
.field { margin-bottom: 1rem; }
.field label { display: block; margin-bottom: 0.35rem; font-weight: 750; }
.field input, .field select {
  width: 100%;
  min-height: 46px;
  border: 1px solid #aebdca;
  border-radius: 0.55rem;
  background: white;
  color: var(--ink);
  padding: 0.65rem 0.75rem;
}
.field input:focus, .field select:focus, button:focus-visible, a:focus-visible { outline: 3px solid rgba(23,105,224,0.3); outline-offset: 2px; }
.form-row { display: grid; grid-template-columns: 1fr 150px; gap: 0.8rem; align-items: end; }
.result-box { min-height: 180px; border: 1px solid var(--line); border-radius: 0.75rem; background: #f8fbfd; padding: 1rem; }
.result-box pre { max-height: 480px; margin: 0; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 0.84rem; }
.error-message { color: var(--danger); font-weight: 700; }
.fact-list { display: grid; grid-template-columns: 180px 1fr; margin: 0; }
.fact-list dt, .fact-list dd { border-bottom: 1px solid var(--line); padding: 0.6rem 0; }
.fact-list dt { color: var(--muted); font-weight: 700; }
.fact-list dd { margin: 0; overflow-wrap: anywhere; }

.steps { counter-reset: step; list-style: none; padding: 0; }
.steps li { position: relative; padding: 0 0 1.2rem 3.2rem; }
.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: -0.1rem;
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 50%;
  background: var(--ink);
  color: white;
  font-weight: 800;
}

.legal { max-width: 880px; margin-inline: auto; }
.legal h1 { font-size: clamp(2rem, 5vw, 3.3rem); }
.error-page { max-width: 760px; margin: 4rem auto; text-align: center; }

.site-footer { background: var(--ink); color: #dce8f5; padding: 3rem 0 1.5rem; }
.site-footer a { color: white; }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 1.5rem; }
.footer-grid nav { display: flex; flex-direction: column; align-items: flex-start; gap: 0.45rem; }
.footer-brand { font-size: 1.15rem; font-weight: 800; text-decoration: none; }
.footer-note { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; border-top: 1px solid rgba(255,255,255,0.18); padding-top: 1.2rem; color: #b8c8da; font-size: 0.88rem; }

.cookie-banner {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 50;
  width: min(620px, calc(100% - 2rem));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid #334a68;
  border-radius: 0.8rem;
  background: #162942;
  color: white;
  box-shadow: var(--shadow);
  padding: 1rem;
}
.cookie-banner[hidden] { display: none; }
.cookie-banner p { margin: 0; font-size: 0.9rem; }
.cookie-banner a { color: #8ee4d5; }
.cookie-actions { display: flex; flex-shrink: 0; gap: 0.55rem; }
.cookie-banner .button-secondary { border-color: #9fb0c3; background: transparent; color: white; }

@media (max-width: 850px) {
  .hero, .tool-layout { grid-template-columns: 1fr; }
  .quick-grid, .comparison-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding-block: 0.8rem; }
  .site-header { position: static; }
  .site-nav { justify-content: flex-start; gap: 0.35rem 0.8rem; font-size: 0.9rem; }
  main.shell { padding-top: 1.2rem; }
  .quick-grid, .card-grid, .comparison-grid, .footer-grid, .form-row { grid-template-columns: 1fr; }
  .ip-meta { grid-template-columns: 1fr; }
  .fact-list { grid-template-columns: 1fr; }
  .fact-list dt { border-bottom: 0; padding-bottom: 0; }
  .fact-list dd { padding-top: 0.15rem; }
  .footer-note, .cookie-banner { align-items: stretch; flex-direction: column; }
  .cookie-actions .button { flex: 1; }
}