:root {
  --primary: #1268B0;
  --primary-dark: #0A3E6E;
  --accent: #FAB615;
  --ink: #162235;
  --muted: #637083;
  --line: #E5EAF1;
  --soft: #F5F8FC;
  --white: #FFFFFF;
  --green: #0E8F74;
  --orange: #E15A2B;
  --shadow: 0 14px 35px rgba(18, 44, 74, .10);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.demo-banner {
  background: var(--primary-dark);
  color: var(--white);
  text-align: center;
  padding: .55rem 1rem;
  font-size: .92rem;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 5vw;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); }
.brand span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--primary);
  color: var(--white);
  font-weight: 800;
}
.site-nav { display: flex; align-items: center; gap: 1rem; font-weight: 700; font-size: .95rem; }
.site-nav a { color: var(--ink); }
.nav-toggle { display: none; }
.messages { max-width: 1120px; margin: 1rem auto 0; padding: 0 5vw; }
.message { padding: .9rem 1rem; border-radius: 8px; background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
.hero {
  min-height: 620px;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  align-items: center;
  gap: 3rem;
  padding: 5rem 5vw;
  color: var(--white);
  background:
    linear-gradient(115deg, rgba(10,62,110,.95), rgba(18,104,176,.82)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='620' viewBox='0 0 900 620'%3E%3Crect width='900' height='620' fill='%23d9ecff'/%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='.35' stroke-width='4'%3E%3Cpath d='M70 470h760M150 470V210h600v260M210 470V270h130v200M390 470V270h130v200M570 470V270h130v200M190 210l260-120 260 120'/%3E%3C/g%3E%3Ccircle cx='735' cy='105' r='52' fill='%23FAB615' fill-opacity='.9'/%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
}
.hero h1, .page-hero h1 { margin: 0 0 1rem; font-size: clamp(2.4rem, 6vw, 5.6rem); line-height: 1.02; letter-spacing: 0; }
.hero p, .page-hero p { max-width: 720px; font-size: 1.15rem; }
.eyebrow { margin: 0 0 .75rem; color: var(--accent); text-transform: uppercase; font-size: .78rem; font-weight: 800; letter-spacing: .12em; }
.hero-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.hero-panel div, .card, .mini-card, .panel, .form-card, .profile-card, .gallery-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}
.hero-panel div { padding: 1.25rem; color: var(--ink); }
.hero-panel strong { display: block; color: var(--primary); font-size: 2rem; }
.hero-panel span { color: var(--muted); }
.actions { display: flex; gap: .8rem; flex-wrap: wrap; margin-top: 1.4rem; }
.actions.vertical { flex-direction: column; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .75rem 1.05rem;
  border: 0;
  border-radius: 8px;
  font-weight: 800;
  cursor: pointer;
  background: var(--primary);
  color: var(--white);
}
.btn:hover { text-decoration: none; filter: brightness(.95); }
.btn.primary { background: var(--primary); color: var(--white); }
.btn.light { background: var(--white); color: var(--primary-dark); }
.btn.accent { background: var(--accent); color: var(--ink); }
.btn.small { min-height: 38px; padding: .55rem .8rem; font-size: .92rem; }
.section { padding: 4rem 5vw; max-width: 1220px; margin: 0 auto; }
.page-hero { padding: 4.5rem 5vw; background: var(--soft); border-bottom: 1px solid var(--line); }
.page-hero .eyebrow { color: var(--primary); }
.page-hero.success { background: #F0FDF4; }
.two-col { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem; align-items: start; }
.section-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
h2 { margin: 0 0 1rem; font-size: 1.75rem; line-height: 1.2; }
h3 { margin: 0 0 .5rem; }
.grid { display: grid; gap: 1rem; }
.cards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card, .mini-card, .panel, .form-card, .profile-card { padding: 1.35rem; }
.card p, .mini-card span { color: var(--muted); }
.tag {
  display: inline-block;
  margin-bottom: .85rem;
  padding: .25rem .55rem;
  border-radius: 999px;
  background: #E7F1FA;
  color: var(--primary-dark);
  font-size: .78rem;
  font-weight: 800;
}
.band { max-width: none; background: var(--soft); }
.band > * { max-width: 1220px; margin-left: auto; margin-right: auto; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; }
.feature-grid span, .feature-grid a {
  padding: 1rem;
  border-radius: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  font-weight: 800;
  color: var(--ink);
}
.feature-grid.compact { grid-template-columns: repeat(2, 1fr); }
.list-item {
  display: block;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
}
.list-item strong, .list-item span { display: block; }
.list-item span, .muted { color: var(--muted); }
.cta {
  margin: 2rem 5vw 4rem;
  padding: 3rem;
  border-radius: 8px;
  background: var(--primary-dark);
  color: var(--white);
  text-align: center;
}
.cta p { color: #D9E9F8; }
.article { max-width: 850px; }
.notice {
  padding: .9rem 1rem;
  border-left: 4px solid var(--accent);
  background: #FFF8E5;
  border-radius: 8px;
  margin: 1rem 0;
}
.steps { padding-left: 1.25rem; }
.form-card.narrow { max-width: 760px; }
.form-card.wide { max-width: 900px; }
.form-card p { margin: 0 0 1rem; }
.form-control, input, select, textarea {
  width: 100%;
  min-height: 44px;
  padding: .7rem .8rem;
  border: 1px solid #CCD6E2;
  border-radius: 8px;
  font: inherit;
}
textarea { min-height: 120px; }
label { display: block; font-weight: 700; margin-bottom: .35rem; }
.errorlist { color: #B42318; margin: .25rem 0 .5rem; padding-left: 1rem; }
.dashboard { display: grid; grid-template-columns: 320px 1fr; gap: 1.5rem; padding: 4rem 5vw; max-width: 1280px; margin: 0 auto; }
.profile-card { align-self: start; position: sticky; top: 95px; }
.dashboard-main { display: grid; gap: 1rem; }
.quick-actions { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; }
.quick-actions h2 { flex-basis: 100%; }
table { width: 100%; border-collapse: collapse; background: var(--white); }
th, td { padding: .9rem; border: 1px solid var(--line); text-align: left; }
th { background: #EDF5FC; }
.table-wrap { overflow-x: auto; }
.question { border: 1px solid var(--line); border-radius: 8px; margin: 1rem 0; padding: 1rem; }
.question legend { font-weight: 800; }
.question label { font-weight: 400; margin: .5rem 0; }
.question input { width: auto; min-height: auto; }
.result-row { padding: 1rem; margin-bottom: 1rem; border-radius: 8px; border: 1px solid var(--line); }
.result-row.correct { background: #ECFDF5; }
.result-row.wrong { background: #FEF2F2; }
.reference { display: inline-block; padding: .6rem 1rem; border-radius: 8px; background: var(--white); color: var(--primary-dark); font-size: 1.4rem; font-weight: 900; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.gallery-card {
  min-height: 260px;
  padding: 1.4rem;
  color: var(--white);
  background: linear-gradient(145deg, var(--card-color), #162235);
  border: 0;
}
.gallery-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 8px; background: rgba(255,255,255,.2); font-size: 1.7rem; font-weight: 900; }
.gallery-card span { display: block; margin-top: 2rem; color: #F7FBFF; }
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 2rem 5vw;
  background: #101928;
  color: var(--white);
}
.site-footer p { margin: .35rem 0 0; color: #B8C4D3; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.footer-links a { color: var(--accent); font-weight: 800; }

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; border: 1px solid var(--line); background: var(--white); border-radius: 8px; padding: .6rem .85rem; font-weight: 800; }
  .site-nav {
    display: none;
    position: absolute;
    left: 5vw;
    right: 5vw;
    top: 76px;
    padding: 1rem;
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
  }
  .site-nav.open { display: flex; }
  .hero, .two-col, .dashboard { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding: 4rem 5vw; }
  .cards, .gallery-grid, .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .profile-card { position: static; }
}

@media (max-width: 620px) {
  .hero-panel, .cards, .gallery-grid, .feature-grid, .feature-grid.compact { grid-template-columns: 1fr; }
  .site-footer, .section-head { flex-direction: column; align-items: flex-start; }
  .cta { margin-left: 0; margin-right: 0; border-radius: 0; }
}