:root {
  --navy: #13294b;
  --navy-2: #1d3a66;
  --orange: #e84a27;
  --cream: #f6f2ea;
  --paper: #ffffff;
  --ink: #1b2330;
  --muted: #586273;
  --rule: #e2ddd2;
  --sky: #8fb8ff;
  --t1: #2f6fde; --t2: #e84a27; --t3: #0f8f6e; --t4: #8a5cd1;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--cream); color: var(--ink);
  font-family: 'Source Sans 3', 'Segoe UI', Helvetica, Arial, sans-serif;
  font-size: 17px; line-height: 1.6;
}
a { color: var(--navy-2); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
h1, h2, h3 { font-family: 'Source Serif 4', Georgia, serif; line-height: 1.2; }

/* hero */
.hero { background: var(--navy); color: #fff; padding-bottom: 64px;
  background-image: radial-gradient(circle at 85% 20%, rgba(143,184,255,.12), transparent 45%); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 18px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: #fff; text-decoration: none;
  font-family: 'Source Serif 4', Georgia, serif; font-weight: 700; font-size: 1.25rem; }
.brand svg { width: 30px; height: 22px; }
.brand path { fill: none; stroke: var(--orange); stroke-width: 3; stroke-linecap: round; }
.bar nav { display: flex; gap: 22px; flex-wrap: wrap; }
.bar nav a { color: rgba(255,255,255,.82); text-decoration: none; font-weight: 600; font-size: .95rem; }
.bar nav a:hover { color: #fff; }

.hero-grid { display: grid; grid-template-columns: 1fr 1.05fr; gap: 48px; align-items: center; padding-top: 36px; }
.kicker { color: #ffb59f; font-weight: 600; font-size: .85rem; letter-spacing: .04em; text-transform: uppercase; margin: 0 0 14px; }
.hero h1 { font-size: 2.6rem; margin: 0 0 18px; letter-spacing: -.01em; }
.lede { font-size: 1.12rem; color: rgba(255,255,255,.85); margin: 0 0 26px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 0; }
.btn { display: inline-block; padding: 11px 20px; border-radius: 6px; background: var(--orange); color: #fff; text-decoration: none; font-weight: 700; }
.btn:hover { background: #ff5b36; }
.btn.ghost { background: transparent; border: 1.5px solid rgba(255,255,255,.45); }
.btn.ghost:hover { border-color: #fff; }

.hero-art { height: 300px; }
.hero-art svg { width: 100%; height: 100%; display: block; }
.hero-art path { fill: none; stroke: rgba(143,184,255,.28); stroke-width: 1.2; }
.hero-art path:nth-child(5n) { stroke: rgba(232,74,39,.7); stroke-width: 1.6; }


/* blocks */
.block { padding: 64px 0; }
.block.alt { background: var(--paper); }
.block h2 { font-size: 2rem; margin: 0 0 10px; color: var(--navy); }
.intro { max-width: 720px; color: var(--muted); font-size: 1.08rem; margin: 0 0 28px; }
.sub { font-size: 1.25rem; color: var(--navy); margin: 40px 0 14px; }


.label { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--orange); margin: 0 0 14px; }
.vision-big { font-family: 'Source Serif 4', Georgia, serif; font-size: 2.6rem; line-height: 1.2; font-weight: 600; color: var(--navy);
  margin: 0; max-width: 900px; padding-left: 24px; border-left: 5px solid var(--orange); }

/* people */
.pis { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 20px; }
.pi { display: flex; gap: 18px; align-items: center; background: var(--cream); border-radius: 12px; padding: 18px; text-decoration: none; color: var(--ink);
  transition: transform .15s ease, box-shadow .15s ease; }
.pi:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(19,41,75,.12); }
.pi img { width: 112px; height: 112px; border-radius: 50%; object-fit: cover; flex: none; border: 3px solid #fff; }
.pi div > * { display: block; }
.pi .role { font-size: .75rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--orange); }
.pi strong { font-family: 'Source Serif 4', Georgia, serif; font-size: 1.4rem; color: var(--navy); margin: 2px 0 4px; }
.pi span { color: var(--muted); font-size: .95rem; line-height: 1.4; }
.pi .more { margin-top: 8px; color: var(--navy-2); font-weight: 700; }
.students { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.students li { background: var(--cream); border-radius: 10px; padding: 14px 16px; }
.students strong { display: block; font-size: 1.08rem; color: var(--navy); }
.students span { font-size: .9rem; color: var(--muted); }

/* projects */
.group { font-size: .8rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--orange);
  font-family: 'Source Sans 3', sans-serif; margin: 36px 0 4px; padding-bottom: 8px; border-bottom: 1px solid var(--rule); }
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 36px; }
.p h4 { font-family: 'Source Serif 4', Georgia, serif; font-size: 1.2rem; color: var(--navy); margin: 16px 0 6px; }
.p p { margin: 0; font-size: .96rem; color: #3b4555; }

/* papers */
.papers { list-style: none; padding: 0; margin: 20px 0 0; }
.papers li { background: var(--cream); border-radius: 10px; padding: 16px 18px; }
.papers strong { display: block; font-family: 'Source Serif 4', Georgia, serif; font-size: 1.15rem; color: var(--navy); margin: 6px 0 2px; }
.papers span { color: var(--muted); }
.papers .status { font-size: .75rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; color: var(--orange); }

/* footer */
.foot { background: var(--navy); color: rgba(255,255,255,.8); padding: 44px 0; font-size: .95rem; }
.foot a { color: #fff; }
.foot .brand { margin: 0 0 10px; }
.foot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.foot p { margin: 0 0 10px; }
.foot b { color: #fff; }

@media (max-width: 960px) {
  .hero-grid, .project { grid-template-columns: 1fr; }
    .pgrid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 2.1rem; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .bar nav { gap: 14px; }
  .hero h1 { font-size: 1.75rem; }
  .pis, .students, .foot-grid { grid-template-columns: 1fr; }
  .vision-big { font-size: 1.7rem; }
  .pgrid { grid-template-columns: 1fr; }
  .hero-art { height: 140px; }
  .pi img { width: 84px; height: 84px; }
  .block { padding: 48px 0; }
}