/* Learn / criteria page */
.learn-hero {
  border-radius: var(--r-xl); padding: 38px 40px;
  background:
    radial-gradient(620px 260px at 85% 20%, rgba(124,92,255,0.26), transparent 60%),
    radial-gradient(520px 220px at 95% 95%, rgba(34,211,238,0.20), transparent 60%),
    var(--surface);
  border: 1px solid var(--border); box-shadow: var(--shadow-pop);
}
.learn-kicker { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--cyan-soft); }
.learn-hero h1 { font-family: var(--font-display); font-weight: 600; font-size: clamp(26px, 3.2vw, 38px); letter-spacing: -0.03em; line-height: 1.12; margin: 10px 0 12px; max-width: 760px; }
.learn-hero p { color: var(--text-dim); font-size: 15px; line-height: 1.65; max-width: 680px; margin: 0 0 22px; }

.learn-block { margin-top: 38px; }
.learn-block > h2 { font-family: var(--font-display); font-weight: 600; font-size: 22px; letter-spacing: -0.02em; margin: 0 0 6px; }
.learn-sub { color: var(--text-dim); font-size: 14px; line-height: 1.6; margin: 0 0 18px; max-width: 720px; }

.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 16px; }
.pillar { padding: 22px; }
.pillar-ic { font-size: 26px; line-height: 1; margin-bottom: 12px; }
.pillar h3 { font-family: var(--font-display); font-weight: 600; font-size: 16px; margin: 0 0 8px; letter-spacing: -0.01em; }
.pillar p { color: var(--text-dim); font-size: 13.5px; line-height: 1.6; margin: 0; }

.crit-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.crit { padding: 20px 22px; }
.crit-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 8px; }
.crit-name { font-family: var(--font-display); font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em; }
.crit-band { flex: none; font-family: var(--font-mono); font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: var(--r-pill);
  background: rgba(52,211,153,0.14); color: #6EE7B7; border: 1px solid rgba(52,211,153,0.3); white-space: nowrap; }
.crit p { color: var(--text-dim); font-size: 13.5px; line-height: 1.6; margin: 0 0 12px; }
.crit-src { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: .03em; color: var(--text-faint); padding-top: 10px; border-top: 1px dashed var(--border); }

.score-formula { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; padding: 22px 24px; margin-top: 8px; }
.sf-item { display: flex; flex-direction: column; gap: 4px; min-width: 90px; }
.sf-w { font-family: var(--font-display); font-weight: 700; font-size: 28px; letter-spacing: -0.03em;
  background: var(--grad-primary); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; line-height: 1; }
.sf-item > span:last-child { font-size: 13px; color: var(--text-dim); }
.sf-plus { font-family: var(--font-display); font-size: 22px; color: var(--text-faint); }
.learn-note, .learn-disclaimer { color: var(--text-dim); font-size: 13.5px; line-height: 1.65; margin: 16px 0 0; max-width: 760px; }
.learn-disclaimer { color: var(--text-faint); font-size: 12.5px; }

.tip-list, .src-list { margin: 8px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 10px; }
.tip-list li, .src-list li { position: relative; padding: 12px 14px 12px 38px; border-radius: var(--r-md);
  background: var(--surface); border: 1px solid var(--border); font-size: 13.5px; line-height: 1.6; color: var(--text-dim); }
.tip-list li b { color: var(--text); font-weight: 600; }
.tip-list li::before { content: "✓"; position: absolute; left: 14px; top: 12px; color: #6EE7B7; font-weight: 700; }
.src-list li { padding-left: 14px; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }

@media (max-width: 900px) {
  .pillar-grid { grid-template-columns: 1fr; }
  .crit-list { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .learn-hero { padding: 26px 18px; }
  .learn-block > h2 { font-size: 19px; }
}