:root {
  --bg: #f7fbfc;
  --paper: #ffffff;
  --ink: #17313a;
  --muted: #5d737b;
  --accent: #256d85;
  --accent-2: #5aa3b8;
  --dark: #16343e;
  --warm: #e1b85f;
  --line: #d9e8ec;
  --soft: #eaf4f6;
  --shadow: 0 18px 45px rgba(22, 52, 62, 0.12);
  --radius: 20px;
  --max: 1180px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--ink); background: radial-gradient(circle at top left, #e1f3f7 0, transparent 320px), var(--bg); line-height: 1.65; }
a { color: #12637a; text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }
a:hover { color: #0d4656; }
img { max-width: 100%; }
.skip-link { position: absolute; left: -999px; top: 1rem; background: var(--dark); color: #fff; padding: .7rem 1rem; border-radius: .6rem; z-index: 20; }
.skip-link:focus { left: 1rem; }
.site-header { background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; backdrop-filter: blur(12px); }
.header-inner { max-width: var(--max); margin: 0 auto; padding: .85rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .75rem; color: var(--ink); text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand-mark { width: 42px; height: 42px; border-radius: 13px; box-shadow: 0 8px 22px rgba(37,109,133,.2); }
.brand small { display: block; color: var(--muted); font-weight: 600; font-size: .75rem; letter-spacing: 0; }
.nav-toggle { display: none; background: var(--dark); color: #fff; border: 0; border-radius: 999px; padding: .6rem .9rem; font-weight: 700; }
.primary-nav { display: flex; flex-wrap: wrap; gap: .35rem; justify-content: flex-end; }
.primary-nav a { text-decoration: none; color: var(--dark); font-weight: 700; font-size: .94rem; padding: .5rem .7rem; border-radius: 999px; }
.primary-nav a:hover { background: var(--soft); }
.hero { background: linear-gradient(135deg, rgba(22,52,62,.96), rgba(37,109,133,.9)), url('/assets/img/water-lines.svg'); background-size: cover; color: #fff; }
.hero-inner { max-width: var(--max); margin: 0 auto; padding: 4.5rem 1.25rem 4rem; display: grid; grid-template-columns: 1.2fr .8fr; gap: 2rem; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 800; color: #c8f0f5; margin: 0 0 .8rem; }
h1 { font-size: clamp(2.1rem, 5vw, 4.6rem); line-height: 1.03; margin: 0 0 1rem; letter-spacing: -.055em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.25rem); line-height: 1.15; margin: 2.4rem 0 .9rem; letter-spacing: -.035em; }
h3 { margin-top: 1.5rem; line-height: 1.25; }
.lede { font-size: 1.18rem; max-width: 760px; color: #e8fbff; }
.hero-card { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22); border-radius: var(--radius); padding: 1.3rem; box-shadow: var(--shadow); }
.hero-card strong { color: #fff; }
.hero-card ul { margin: .8rem 0 0; padding-left: 1.2rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.6rem; }
.btn { display: inline-flex; align-items: center; justify-content: center; padding: .78rem 1rem; border-radius: 999px; font-weight: 800; text-decoration: none; border: 1px solid transparent; }
.btn-primary { background: #fff; color: var(--dark); }
.btn-secondary { background: transparent; color: #fff; border-color: rgba(255,255,255,.55); }
.container { max-width: var(--max); margin: 0 auto; padding: 2.2rem 1.25rem; }
.grid { display: grid; gap: 1.15rem; }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; box-shadow: 0 10px 28px rgba(22,52,62,.06); }
.card h3 { margin-top: 0; }
.card p { color: var(--muted); }
.card a.card-link { text-decoration: none; color: var(--ink); }
.card a.card-link:hover h3 { color: var(--accent); }
.article-shell { max-width: 860px; margin: 0 auto; padding: 2.6rem 1.25rem; }
.article-meta { color: var(--muted); font-size: .95rem; border-bottom: 1px solid var(--line); padding-bottom: 1rem; margin-bottom: 1.2rem; }
.article-shell h1 { color: var(--dark); font-size: clamp(2rem, 4vw, 3.4rem); }
.article-shell .lede { color: #39525b; font-size: 1.16rem; }
.notice { background: #fff8e7; border: 1px solid #edd188; color: #4e3f19; padding: 1rem; border-radius: 16px; }
.key-box { background: var(--soft); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem 1.2rem; margin: 1.3rem 0; }
.key-box ul { margin-bottom: 0; }
.related-box { margin-top: 2rem; padding: 1.2rem; border-radius: var(--radius); background: #f2f7f8; border: 1px solid var(--line); }
.related-list { display: grid; gap: .55rem; padding-left: 1.1rem; }
.breadcrumbs { font-size: .9rem; color: var(--muted); margin-bottom: 1rem; }
.breadcrumbs a { color: var(--muted); }
.article-list { display: grid; gap: .9rem; }
.article-list article { background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 1rem; }
.article-list h2 { font-size: 1.35rem; margin: 0 0 .35rem; }
.callout { background: linear-gradient(135deg, #e8f5f7, #fff); border-left: 5px solid var(--accent); border-radius: 16px; padding: 1.1rem 1.2rem; }
.footer { background: var(--dark); color: #d8eef2; margin-top: 3rem; }
.footer a { color: #d8eef2; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 2rem 1.25rem; display: grid; grid-template-columns: 1.2fr .8fr; gap: 1.5rem; }
.footer small { color: #acc9d0; }
.kicker { color: var(--accent); font-weight: 800; text-transform: uppercase; letter-spacing: .09em; font-size: .78rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
th, td { padding: .8rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--soft); }
.ad-note { font-size: .82rem; color: var(--muted); text-align: center; margin: 1.5rem 0; }
@media (max-width: 860px) {
  .hero-inner, .grid-3, .grid-2, .footer-inner { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; }
  .primary-nav { display: none; width: 100%; flex-direction: column; padding: .5rem 0; }
  .primary-nav.open { display: flex; }
  .header-inner { flex-wrap: wrap; }
}