/* Gerardo Lin | Scientia: site styles. Plain CSS, no build step. */
:root {
  --ink: #1f2a30;
  --ink-soft: #4a5862;
  --muted: #6b7882;
  --teal: #1f7f8e;
  --teal-bright: #3ba9b9;
  --bg: #ffffff;
  --bg-alt: #f2f6f8;
  --line: #dde5ea;
  --track: #e3eaee;
  --radius: 10px;
  --max: 1080px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--ink); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: .8rem;
}
.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 46rem; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: #fff; padding: 8px 12px; z-index: 100; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 700; font-size: 1.05rem; }
.brand img { width: 26px; height: 26px; }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { text-decoration: none; color: var(--ink-soft); font-size: .93rem; }
.nav a:hover { color: var(--teal); }
.btn {
  display: inline-block;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  padding: .7em 1.25em;
  border-radius: 999px;
  border: 2px solid var(--teal);
  font-size: .95rem;
}
.btn:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn-ghost { background: transparent; color: var(--teal); }
.btn-ghost:hover { background: var(--teal); border-color: var(--teal); color: #fff; }
.nav .btn { padding: .45em 1em; color: #fff; }

/* Hero */
.hero { padding: 72px 0 64px; background: linear-gradient(180deg, var(--bg-alt), var(--bg)); }
.hero .wrap { display: grid; grid-template-columns: 1.35fr .85fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.3rem); margin-bottom: .35em; }
.hero h1 span { display: block; font-size: .42em; font-weight: 600; color: var(--teal); letter-spacing: .01em; margin-top: .5em; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 1.6rem; }
.hero-photo { position: relative; }
.hero-photo img { border-radius: 18px; box-shadow: 0 18px 40px rgba(31,42,48,.18); aspect-ratio: 640/652; object-fit: cover; }
.hero-photo figcaption { font-size: .85rem; color: var(--muted); margin-top: .7rem; text-align: center; }

/* Sections */
section { padding: 80px 0; }
section.alt { background: var(--bg-alt); }
.section-head { margin-bottom: 2.2rem; }

/* Cards */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card .tag { font-size: .78rem; font-weight: 700; color: var(--teal); letter-spacing: .06em; text-transform: uppercase; }
.card h3 { margin-top: .4rem; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card ul { padding-left: 1.1em; margin: 0 0 1em; }
.card li { margin-bottom: .35em; }
.num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--teal); color: #fff; font-weight: 700; font-size: .9rem;
}

/* Stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-bottom: 40px; }
.stat { background: #fff; border-radius: var(--radius); padding: 20px; border: 1px solid var(--line); }
.stat strong { display: block; font-size: 2rem; color: var(--teal); line-height: 1.1; }
.stat span { font-size: .9rem; color: var(--ink-soft); }

/* Bars */
.bars h3 { font-size: 1rem; }
.bar { display: grid; grid-template-columns: 210px 1fr 44px; align-items: center; gap: 12px; margin-bottom: 10px; font-size: .92rem; }
.bar .track { background: var(--track); height: 10px; border-radius: 999px; overflow: hidden; }
.bar .fill { background: var(--teal); height: 100%; border-radius: 999px; }
.bar b { font-size: .88rem; }
.note { font-size: .82rem; color: var(--muted); font-style: italic; }

.lists { margin-top: 40px; }
.lists ul { padding-left: 1.1em; margin: 0; }
.lists li { margin-bottom: .45em; font-size: .95rem; }
.lists li em { color: var(--muted); }

/* About */
.about .wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.about blockquote {
  margin: 0; padding: 22px 26px;
  border-left: 4px solid var(--teal-bright);
  background: var(--bg-alt);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 1.1rem;
}

/* Confidentiality */
.checks { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px 28px; }
.checks li { position: relative; padding-left: 30px; }
.checks li::before {
  content: ""; position: absolute; left: 0; top: .45em;
  width: 16px; height: 9px;
  border-left: 3px solid var(--teal); border-bottom: 3px solid var(--teal);
  transform: rotate(-45deg);
}

/* Testimonials */
.quote { font-size: 1.02rem; }
.quote footer { margin-top: .8rem; font-size: .9rem; color: var(--muted); }

/* Publications */
.pubs { padding-left: 1.2em; margin: 0; }
.pubs li { margin-bottom: .8em; font-size: .95rem; }
.pubs i { color: var(--ink-soft); }

/* Contact */
.contact { background: var(--ink); color: #e8eef1; }
.contact h2 { color: #fff; }
.contact .lead { color: #c4d0d6; }
.contact .wrap { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; align-items: center; }
.contact .btn { background: var(--teal-bright); border-color: var(--teal-bright); color: var(--ink); font-size: 1.05rem; }
.contact .btn:hover { background: #fff; border-color: #fff; }
.contact dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 10px 18px; font-size: .95rem; }
.contact dt { color: var(--teal-bright); font-weight: 600; }
.contact dd { margin: 0; }
.contact a { color: #fff; }

/* Footer */
.site-footer { padding: 28px 0; font-size: .88rem; color: var(--muted); border-top: 1px solid var(--line); }
.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.site-footer img { height: 38px; width: auto; }
.site-footer nav { display: flex; gap: 18px; }

/* Responsive */
@media (max-width: 900px) {
  .nav a:not(.btn) { display: none; }
  .hero .wrap, .about .wrap, .contact .wrap { grid-template-columns: 1fr; gap: 36px; }
  .hero-photo { max-width: 240px; margin: 0 auto; order: -1; }
  .grid-3, .grid-2, .stats, .checks { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  section { padding: 56px 0; }
  .hero { padding: 40px 0 48px; }
  .wrap { padding: 0 16px; }
  .grid-2, .checks { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .bar { grid-template-columns: 1fr 44px; }
  .bar .label { grid-column: 1 / -1; margin-bottom: -6px; }
  .brand span { font-size: .95rem; }
}
@media print {
  .site-header, .contact .btn { display: none; }
  section { padding: 24px 0; }
}