:root {
  --ink: #09080a;
  --warm: #faf7f2;
  --accent: #004ca6;
  --teal: #00bda6;
  --coral: #ff6d34;
  --dim: #8a8480;
  --line: #e2ddd6;
  --white: #fff;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--warm);
  color: var(--ink);
  font-family: "DM Sans", sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; }
.banda {
  height: 4px;
  background: linear-gradient(to right, #004ca6 0%, #00bda6 25%, #ff6d34 50%, #00bda6 75%, #004ca6 100%);
  background-size: 200%;
  animation: slide 6s linear infinite;
}
@keyframes slide { 50% { background-position: 200%; } }
.nav-wrap { position: sticky; top: 0; z-index: 80; background: var(--warm); }
.nav-inner { display: flex; justify-content: center; padding: 12px 14px 10px; }
.nav {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: .25rem;
  background: rgba(255,255,255,.92); border-radius: 999px; padding: .3rem .4rem;
  box-shadow: 0 4px 24px rgba(0,0,0,.12);
}
.nav a, .nav span {
  display: inline-flex; align-items: center; height: 30px; padding: 0 .8rem;
  border-radius: 999px; text-decoration: none; font-family: "DM Mono", monospace;
  font-size: .56rem; letter-spacing: .12em; text-transform: uppercase; color: var(--dim);
}
.nav a.now { color: #fff; background: linear-gradient(135deg, var(--accent), var(--teal)); }
.nav a.go { color: #fff; background: linear-gradient(135deg, var(--coral), #e65520); font-weight: 700; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 1.4rem 1.15rem 3rem; }
h1, h2, h3 { font-family: "Playfair Display", serif; letter-spacing: -.02em; }
h1 { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: .6rem; }
h1 em { font-style: italic; font-weight: 400; color: var(--accent); }
.lead { color: var(--dim); line-height: 1.7; margin-bottom: 1.2rem; }
.card, .box {
  background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 1.1rem 1.2rem;
}
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .8rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  text-decoration: none; border: 0; cursor: pointer;
  border-radius: 999px; padding: .75rem 1.1rem; font-weight: 700; font-size: .9rem;
  font-family: "DM Sans", sans-serif;
}
.btn-main { background: linear-gradient(135deg, var(--accent), var(--teal)); color: #fff; }
.btn-coral { background: linear-gradient(135deg, var(--coral), #e65520); color: #fff; }
.btn-ghost { background: #fff; border: 1px solid var(--line); color: var(--ink); }
.bar { height: 8px; background: var(--line); border-radius: 99px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--teal); }
.alert { padding: .8rem 1rem; border-radius: 10px; margin-bottom: 1rem; font-size: .9rem; }
.alert-error { background: #fdecea; color: #8a1f11; }
.alert-success { background: #e7f7f3; color: #0b5c50; }
label { display: block; font-weight: 600; margin: .7rem 0 .35rem; font-size: .9rem; }
input, select, textarea {
  width: 100%; padding: .75rem .85rem; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; background: #fff;
}
.crumb { color: var(--dim); font-size: .85rem; margin-bottom: 1rem; }
.crumb a { color: var(--accent); text-decoration: none; }
.quiz-q { margin: 1rem 0; padding: 1rem; background: #fff; border: 1px solid var(--line); border-radius: 14px; }
.quiz-q label { font-weight: 500; }
footer.app-foot { background: #111; color: #b4afa8; padding: 1.4rem; text-align: center; font-size: .8rem; }
.content-html { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 1.3rem; line-height: 1.75; }
.content-html h2, .content-html h3 { margin: 1.1rem 0 .5rem; }
.content-html p, .content-html li { color: #444; }
.taller { margin: 1.2rem 0; padding: 1rem; border: 1px dashed var(--line); border-radius: 12px; }
@media (max-width: 700px) { .grid { grid-template-columns: 1fr; } }