:root {
  --navy: #16324f;
  --navy-deep: #0e2336;
  --orange: #c8762a;
  --green: #2f7a4f;
  --red: #a13a3a;
  --paper: #f7f5f0;
  --card: #ffffff;
  --ink: #16324f;
  --ink-soft: #4a5b6c;
  --border: #e2e6ea;
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}

a { color: var(--navy); }
a:hover { color: var(--orange); }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- top nav ---- */
.topnav {
  background: var(--navy-deep);
  color: #fff;
  padding: 0.9rem 0;
}
.topnav .wrap { display: flex; align-items: center; justify-content: space-between; }
.topnav a { color: #dce6ee; text-decoration: none; font-size: 0.95rem; margin-left: 1.4rem; }
.topnav a:hover { color: #fff; }
.topnav .brand { color: #fff; font-weight: 700; letter-spacing: 0.02em; }

/* ---- hero row ---- */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  padding: 2.5rem 0 2rem;
}
@media (max-width: 800px) { .hero { grid-template-columns: 1fr; } }

.hero-text .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--orange);
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.hero-text h1 {
  font-size: 2.5rem;
  line-height: 1.1;
  margin: 0 0 0.9rem;
  color: var(--navy-deep);
}
.hero-text p.lede {
  font-size: 1.12rem;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 1.4rem;
}
.hero-cta { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.65rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
}
.btn-primary { background: var(--navy-deep); color: #fff; }
.btn-primary:hover { background: var(--orange); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--navy); color: var(--navy); }
.btn-ghost:hover { border-color: var(--orange); color: var(--orange); }

/* ---- hero visual (CSS-drawn arc, no external image needed) ---- */
.hero-visual {
  background: linear-gradient(160deg, var(--navy-deep), var(--navy) 60%, var(--orange) 140%);
  border-radius: var(--radius);
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  min-height: 260px;
}
.arc-steps { display: flex; flex-direction: column; gap: 0.55rem; }
.arc-step {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  padding: 0.55rem 0.8rem;
}
.arc-step .n {
  width: 1.6rem; height: 1.6rem;
  border-radius: 50%;
  background: rgba(255,255,255,0.16);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem; font-weight: 700;
  flex-shrink: 0;
}
.arc-step .label strong { display: block; font-size: 0.95rem; }
.arc-step .label span { font-size: 0.8rem; opacity: 0.8; }
.arc-arrow { text-align: center; opacity: 0.6; font-size: 0.9rem; margin: -0.15rem 0; }

/* ---- section shell ---- */
section.band {
  padding: 2.2rem 0;
  border-top: 1px solid var(--border);
}
section.band h2 {
  font-size: 1.5rem;
  margin: 0 0 0.3rem;
  color: var(--navy-deep);
}
section.band p.section-sub {
  color: var(--ink-soft);
  margin: 0 0 1.4rem;
  max-width: 70ch;
}

/* ---- Learned Skills ---- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
@media (max-width: 900px) { .skills-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .skills-grid { grid-template-columns: 1fr; } }

.skill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.1rem 1.2rem;
}
.skill-card .tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  background: var(--navy);
  padding: 0.15rem 0.5rem;
  border-radius: 5px;
  margin-bottom: 0.6rem;
}
.skill-card h3 { font-size: 1.02rem; margin: 0 0 0.4rem; }
.skill-card p { font-size: 0.9rem; color: var(--ink-soft); margin: 0; }

/* ---- Resources ---- */
.resource-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
@media (max-width: 700px) { .resource-grid { grid-template-columns: 1fr; } }

.resource-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.resource-card h3 { margin: 0; font-size: 1.05rem; }
.resource-card p { margin: 0; color: var(--ink-soft); font-size: 0.92rem; }
.resource-card .links { display: flex; gap: 0.9rem; flex-wrap: wrap; margin-top: 0.3rem; }
.resource-card .links a { font-size: 0.88rem; font-weight: 600; text-decoration: none; }
.resource-card .links a::after { content: " →"; }
.badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.45rem;
  border-radius: 5px;
  align-self: flex-start;
}
.badge-real { background: #dfeee3; color: var(--green); }
.badge-fallback { background: #fdeedd; color: var(--orange); }
.badge-live { background: #dbe7f3; color: var(--navy); }

.see-all { margin-top: 1.2rem; font-size: 0.92rem; }

/* ---- Downloads ---- */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
@media (max-width: 800px) { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .tools-grid { grid-template-columns: 1fr; } }

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
}
.tool-card h3 { margin: 0 0 0.25rem; font-size: 0.98rem; }
.tool-card p { margin: 0 0 0.6rem; font-size: 0.85rem; color: var(--ink-soft); }
.tool-card code {
  display: block;
  background: #f0ece2;
  border-radius: 6px;
  padding: 0.4rem 0.5rem;
  font-size: 0.78rem;
  overflow-x: auto;
  margin-bottom: 0.5rem;
}
.tool-card a.dl { font-size: 0.85rem; font-weight: 600; text-decoration: none; }

footer {
  border-top: 1px solid var(--border);
  padding: 1.6rem 0 2.4rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}

/* ---- resources.html detail list ---- */
.detail-section { margin-bottom: 2.4rem; }
.detail-section h2 { color: var(--navy-deep); }
table.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
table.detail-table th, table.detail-table td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.detail-table th { color: var(--ink-soft); font-weight: 600; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
table.detail-table a { font-weight: 600; text-decoration: none; }