/* BolSetu — shared styles. No webfonts or CDNs on purpose: most learners are
   on mobile data, so every byte and every extra connection costs them. */

:root {
  --indigo: #1E2A78;
  --saffron: #F26B1D;
  --saffron-dark: #C24A08;
  --bg: #F6F7FC;
  --card: #FFFFFF;
  --text: #141833;
  --muted: #4A5070;
  --line: #DDE0EE;
  --soft: #EEF0FB;
  --radius: 18px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E1020;
    --card: #171A2E;
    --text: #EDEFF8;
    --muted: #A4ABC8;
    --line: #2A2F4A;
    --soft: #1F2440;
    --indigo: #93A0E8;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", sans-serif;
  -webkit-text-size-adjust: 100%;
}

.wrap { max-width: 44rem; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

/* header */
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; padding: .5rem 0 1.5rem; }
.brand svg { width: 38px; height: 38px; flex: none; }
.brand b { font-size: 1.35rem; letter-spacing: -.5px; }
.brand .bol { color: var(--indigo); }
.brand .setu { color: var(--saffron-dark); }

h1 { font-size: 2rem; line-height: 1.25; letter-spacing: -.5px; margin: .5rem 0 .75rem; }
h2 { font-size: 1.2rem; color: var(--indigo); margin: 2.25rem 0 .75rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 .4rem; }
p { margin: 0 0 1rem; }
.lede { font-size: 1.15rem; color: var(--muted); }
.muted { color: var(--muted); font-size: .95rem; }
a { color: var(--indigo); }

/* buttons */
.cta { display: flex; flex-wrap: wrap; gap: .75rem; margin: 1.5rem 0; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 52px; padding: 0 1.4rem; border-radius: 14px;
  font-size: 1rem; font-weight: 600; text-decoration: none;
  background: var(--indigo); color: #fff; border: 0; cursor: pointer;
  flex: 1 1 13rem;
}
.btn.alt { background: transparent; color: var(--indigo); border: 1.5px solid var(--line); }
.btn:active { opacity: .85; }

/* cards & lists */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 1.25rem; margin: 1rem 0;
}
.feat { list-style: none; padding: 0; margin: 0; }
.feat li { padding: .55rem 0 .55rem 1.75rem; position: relative; }
.feat li::before {
  content: ""; position: absolute; left: 0; top: 1.15rem;
  width: 10px; height: 10px; border-radius: 3px; background: var(--saffron);
}
.hi { font-size: 1rem; }

table { border-collapse: collapse; width: 100%; margin: 1rem 0; font-size: .95rem; }
th, td { text-align: left; padding: .6rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }

footer {
  margin-top: 3rem; padding-top: 1.25rem; border-top: 1px solid var(--line);
  font-size: .9rem; color: var(--muted);
}
footer a { margin-right: 1rem; }

@media (max-width: 30rem) {
  h1 { font-size: 1.65rem; }
  .btn { flex-basis: 100%; }
}