.faq-main { width: min(1180px, calc(100% - 40px)); }
.faq-main .lede { max-width: 760px; }
.quick-nav { display: flex; flex-wrap: wrap; gap: 9px; margin: 28px 0 52px; }
.quick-nav a {
  padding: 8px 13px;
  border: 1px solid rgba(0, 219, 231, .28);
  border-radius: 2px;
  color: #8bb3b8;
  background: rgba(0, 219, 231, .045);
  font: 600 10px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
}
.quick-nav a:hover { border-color: #00dbe7; color: #e5feff; box-shadow: 0 0 12px rgba(0, 219, 231, .2); }
.faq-section { scroll-margin-top: 90px; }
.skill-grid, .diagram-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.skill-card, .diagram-card, .answer-card {
  border: 1px solid rgba(0, 219, 231, .22);
  border-radius: 3px;
  background: linear-gradient(145deg, rgba(17, 34, 40, .86), rgba(9, 15, 19, .92));
  box-shadow: 0 0 20px rgba(0, 0, 0, .22);
}
.skill-card { padding: 22px; }
.skill-head { display: flex; align-items: center; gap: 13px; margin-bottom: 13px; }
.key {
  min-width: 45px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid #00dbe7;
  border-radius: 2px;
  color: #e8fdff;
  background: rgba(0, 219, 231, .09);
  font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  box-shadow: inset 0 0 14px rgba(0, 219, 231, .08);
}
.skill-card:nth-child(2) .key { border-color: #ff8a00; background: rgba(255, 138, 0, .08); }
.skill-card h3, .diagram-card h3 { margin: 0; color: #f2feff; font-size: 18px; }
.skill-card p { margin-bottom: 12px; }
.meta { display: flex; flex-wrap: wrap; gap: 7px; }
.meta span { padding: 4px 7px; border-radius: 2px; color: #769398; background: #0a161a; font: 500 9px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; }
.diagram-card { overflow: hidden; }
.diagram-card svg { width: 100%; height: auto; display: block; border-bottom: 1px solid rgba(0, 219, 231, .18); background: radial-gradient(circle, #102d39, #071018 70%); }
.diagram-copy { padding: 18px 20px 21px; }
.diagram-copy p { margin-bottom: 0; font-size: 15px; }
.steps { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; padding: 0; list-style: none; }
.steps li { position: relative; min-height: 104px; padding: 18px 18px 18px 58px; border: 1px solid rgba(0, 219, 231, .22); border-radius: 3px; background: rgba(10, 25, 33, .75); }
.steps b { position: absolute; left: 17px; top: 17px; width: 27px; height: 27px; display: grid; place-items: center; border-radius: 2px; color: #061017; background: #74f5ff; font-size: 12px; }
.steps strong { display: block; margin-bottom: 4px; color: #e3f8fb; }
.answer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.answer-card { padding: 19px 21px; }
.answer-card h3 { margin: 0 0 7px; color: #e8fbff; font-size: 17px; }
.answer-card p { margin: 0; font-size: 15px; }
.cyan-line { stroke: #22e7ff; filter: drop-shadow(0 0 5px #22e7ff); }
.orange-line { stroke: #ff762e; filter: drop-shadow(0 0 5px #ff762e); }
.white-line { stroke: #d9f7ff; filter: drop-shadow(0 0 4px #d9f7ff); }
@media (max-width: 800px) {
  .skill-grid, .diagram-grid, .steps, .answer-grid { grid-template-columns: 1fr; }
}