/* Deep into Space — light editorial theme. Space canvases are the only dark surfaces. */
:root {
  --bg: #f7f6f2;
  --paper: #ffffff;
  --ink: #1d2433;
  --ink-2: #4a5468;
  --muted: #7a8396;
  --line: #e4e2da;
  --accent: #3b5bdb;
  --accent-2: #f08c00;
  --accent-soft: #e8edff;
  --space: #0b1026;
  --radius: 14px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.65 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg, canvas { max-width: 100%; }
h1, h2, h3 { font-family: var(--serif); line-height: 1.2; letter-spacing: -0.01em; color: var(--ink); }
h1 { font-size: clamp(2rem, 4.5vw, 3rem); margin: .2em 0 .3em; }
h2 { font-size: 1.6rem; margin: 1.8em 0 .5em; }
h3 { font-size: 1.25rem; margin: 1.5em 0 .4em; }
.wrap { max-width: 1160px; margin: 0 auto; padding: 0 22px; }
.narrow { max-width: 760px; padding-top: 40px; padding-bottom: 60px; }
.muted { color: var(--muted); }
.lede { font-size: 1.18rem; color: var(--ink-2); max-width: 46em; }
.kicker { text-transform: uppercase; letter-spacing: .12em; font-size: .76rem; font-weight: 700; color: var(--accent-2); margin: 0; }
.center-block { text-align: center; padding: 80px 22px; }

/* Header */
.site-header { background: rgba(247,246,242,.92); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 50; }
.header-inner { display: flex; align-items: center; gap: 20px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 700; font-size: 1.2rem; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 34px; height: 34px; }
.site-nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.site-nav a { color: var(--ink-2); padding: 8px 12px; border-radius: 999px; font-size: .95rem; }
.site-nav a:hover, .site-nav a[aria-current] { background: var(--accent-soft); color: var(--accent); text-decoration: none; }
.site-nav .nav-cta { background: var(--accent); color: #fff; margin-left: 8px; }
.site-nav .nav-cta:hover { background: #2f4bc0; color: #fff; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 1px solid var(--line); border-radius: 8px; font-size: 1.2rem; padding: 4px 10px; cursor: pointer; }
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: var(--paper); flex-direction: column; align-items: stretch; padding: 10px 22px 18px; border-bottom: 1px solid var(--line); }
  .nav-open .site-nav { display: flex; }
  .site-nav .nav-cta { margin: 6px 0 0; text-align: center; }
}

/* Buttons */
.btn { display: inline-block; background: var(--accent); color: #fff; padding: 11px 20px; border-radius: 999px; font-weight: 600; border: 0; cursor: pointer; font-size: .98rem; }
.btn:hover { background: #2f4bc0; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-small { padding: 7px 14px; font-size: .88rem; }

/* Home */
.hero { display: grid; grid-template-columns: 1fr 1.15fr; gap: 40px; align-items: center; padding: 48px 0 30px; }
.hero h1 { font-size: clamp(2.3rem, 5vw, 3.6rem); }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.space-panel { position: relative; background: radial-gradient(ellipse at 50% 40%, #1a2350 0%, var(--space) 70%); border-radius: 22px; overflow: hidden; aspect-ratio: 4 / 3; box-shadow: 0 20px 50px -20px rgba(11,16,38,.45); }
.space-panel canvas { display: block; width: 100%; height: 100%; }
.space-hint { position: absolute; left: 14px; bottom: 12px; color: rgba(255,255,255,.6); font-size: .8rem; pointer-events: none; }
.space-label { position: absolute; color: #fff; font-size: .78rem; padding: 2px 8px; border-radius: 999px; background: rgba(255,255,255,.12); transform: translate(-50%, -160%); white-space: nowrap; pointer-events: none; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; } }

.steps-strip { display: grid; grid-template-columns: repeat(7, 1fr); gap: 10px; counter-reset: step; margin: 20px 0 10px; }
.steps-strip a { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 12px; color: var(--ink); font-size: .92rem; line-height: 1.35; }
.steps-strip a:hover { border-color: var(--accent); text-decoration: none; }
.steps-strip b { display: block; color: var(--accent-2); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px; }
@media (max-width: 900px) { .steps-strip { grid-template-columns: repeat(2, 1fr); } }

.home-section { padding: 30px 0; }
.home-section > h2 { margin-top: 0; }
.section-more { font-weight: 600; }

/* Cards */
.section-head { padding: 34px 0 10px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin: 20px 0 40px; }
.card-grid-compact { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 20px 18px; color: var(--ink); display: flex; flex-direction: column; transition: border-color .15s, transform .15s; }
.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.card h2 { font-size: 1.2rem; margin: .2em 0 .35em; }
.card p { margin: 0; color: var(--ink-2); font-size: .95rem; }
.card-go { margin-top: auto; padding-top: 12px; color: var(--accent); font-weight: 600; font-size: .92rem; }
.card-tool { background: linear-gradient(160deg, #fff 60%, var(--accent-soft)); }

/* Article */
.article-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding-top: 28px; padding-bottom: 60px; }
.article { min-width: 0; }
.crumbs { font-size: .88rem; color: var(--muted); }
.crumbs a { color: var(--muted); }
.prose { font-size: 1.06rem; }
.prose p, .prose ul, .prose ol { max-width: 42em; }
.prose li { margin: .3em 0; }
.prose blockquote { margin: 1.4em 0; padding: 14px 20px; background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 0 10px 10px 0; }
.prose .note { background: #fff7e6; border: 1px solid #ffe2a8; border-radius: 12px; padding: 14px 18px; max-width: 42em; }
.prose .facts { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 20px; max-width: 42em; }
.prose .facts dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 22px; margin: 12px 0; }
.prose .facts dt { color: var(--muted); }
.prose .facts dd { margin: 0; font-weight: 600; }
.prose table { border-collapse: collapse; width: 100%; max-width: 42em; font-size: .95rem; margin: 1em 0; background: var(--paper); }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.prose th { background: #f1f0ea; }
.prose .sources { font-size: .9rem; color: var(--ink-2); border-top: 1px solid var(--line); margin-top: 2.5em; padding-top: .6em; }
.prose .sources h2 { font-size: 1.05rem; font-family: var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); }
.build-cta { margin: 40px 0 24px; display: flex; gap: 20px; align-items: center; justify-content: space-between; background: var(--space); color: #dfe5ff; border-radius: 18px; padding: 22px 26px; background-image: radial-gradient(circle at 85% 30%, #2b3a85 0, transparent 45%); }
.build-cta strong { color: #fff; font-family: var(--serif); font-size: 1.3rem; }
.build-cta p { margin: 4px 0 0; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pager a { background: var(--paper); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; color: var(--ink); font-weight: 600; }
.pager a span { display: block; font-size: .78rem; color: var(--muted); font-weight: 400; text-transform: uppercase; letter-spacing: .08em; }
.pager .next { text-align: right; grid-column: 2; }
.updated { font-size: .85rem; margin-top: 24px; }
.sidebar { position: sticky; top: 84px; align-self: start; }
.side-box { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.side-box h3 { margin: 0 0 8px; font-size: 1.05rem; }
.side-list { margin: 0; padding-left: 1.3em; font-size: .93rem; }
.side-list li { margin: 6px 0; }
.side-list .here a { font-weight: 700; color: var(--ink); }
@media (max-width: 960px) { .article-layout { grid-template-columns: 1fr; } .sidebar { position: static; } .build-cta { flex-direction: column; align-items: flex-start; } }

/* Tool pages */
.tool-head { padding: 28px 0 8px; }
.tool-shell { background: var(--paper); border: 1px solid var(--line); border-radius: 18px; padding: 22px; margin: 16px 0 30px; }
.tool-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: 5px; font-size: .9rem; color: var(--ink-2); }
.field input, .field select { font: inherit; color: var(--ink); padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: #fff; min-width: 140px; }
.field input:focus, .field select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.check { display: inline-flex; align-items: center; gap: 8px; font-size: .95rem; color: var(--ink-2); cursor: pointer; }
.check input { width: 17px; height: 17px; accent-color: var(--accent); }
.result-table { width: 100%; border-collapse: collapse; margin-top: 18px; font-size: .97rem; }
.result-table th, .result-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
.result-table th { color: var(--muted); font-weight: 600; font-size: .85rem; text-transform: uppercase; letter-spacing: .06em; }
.result-table td.num { font-variant-numeric: tabular-nums; font-weight: 600; }
.swatch { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 8px; vertical-align: -1px; }

/* Footer */
.site-footer { background: var(--paper); border-top: 1px solid var(--line); margin-top: 40px; padding: 40px 0 20px; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 30px; }
.footer-grid h4 { margin: 0 0 8px; font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
.footer-grid a { display: block; color: var(--ink-2); margin: 4px 0; }
.brand-footer { font-size: 1.1rem; }
.footer-bottom { margin-top: 26px; padding-top: 14px; border-top: 1px solid var(--line); font-size: .85rem; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.ad { margin: 26px 0; min-height: 90px; }