.quiz-topbar { inset: 0 0 auto; }

.quiz-hero {
  min-height: 780px;
  padding: 150px clamp(24px, 7vw, 110px) 110px;
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.quiz-hero::before {
  content: "10";
  position: absolute;
  right: clamp(18px, 5vw, 80px);
  top: 50%;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200, 255, 61, .24);
  font-size: clamp(260px, 37vw, 560px);
  font-weight: 800;
  line-height: .7;
  letter-spacing: -.1em;
  transform: translateY(-43%);
}

.quiz-hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 6.25vw 6.25vw;
  opacity: .3;
}

.quiz-hero-content {
  width: min(100%, var(--max));
  margin: auto;
  position: relative;
  z-index: 1;
}

.quiz-hero h1 { max-width: 1050px; }
.quiz-hero-copy { max-width: 690px; margin: 38px 0 0; color: #c9cbc5; font-size: clamp(17px, 1.6vw, 22px); line-height: 1.65; }
.quiz-hero .button { width: max-content; margin-top: 34px; }

.quiz-hero-meta {
  position: absolute;
  z-index: 1;
  right: clamp(24px, 7vw, 110px);
  bottom: 42px;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: clamp(22px, 4vw, 60px);
}

.quiz-hero-meta div { display: flex; flex-direction: column; gap: 4px; }
.quiz-hero-meta strong { color: var(--lime); font-size: 25px; letter-spacing: -.04em; }
.quiz-hero-meta span { color: var(--muted); font: 10px DM Mono, monospace; text-transform: uppercase; }

.quiz-section { padding: clamp(90px, 10vw, 145px) clamp(24px, 7vw, 110px); background: var(--paper); color: var(--ink); }
.quiz-intro, .quiz-shell { width: min(100%, var(--max)); margin-left: auto; margin-right: auto; }
.quiz-intro { display: grid; grid-template-columns: 1.2fr .8fr; gap: 80px; align-items: end; margin-bottom: 75px; }
.quiz-intro .tag { color: var(--lime-dark); margin: 0 0 22px; }
.quiz-intro h2 { margin: 0; font-size: clamp(46px, 6.2vw, 92px); line-height: .98; letter-spacing: -.055em; }
.quiz-intro h2 em { color: var(--lime-dark); }
.quiz-intro > p { max-width: 560px; color: #555851; font-size: 17px; line-height: 1.7; }

.quiz-shell { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: clamp(38px, 6vw, 90px); align-items: start; }
.quiz-sidebar { position: sticky; top: 108px; padding-top: 22px; border-top: 1px solid var(--ink); }
.sidebar-label { display: block; color: var(--lime-dark); font: 500 10px DM Mono, monospace; text-transform: uppercase; letter-spacing: .1em; }
.quiz-sidebar > strong { display: block; margin: 20px 0 13px; font-size: 58px; letter-spacing: -.06em; line-height: 1; }
.quiz-progress { width: 100%; height: 4px; background: rgba(8, 11, 16, .14); overflow: hidden; }
.quiz-progress span { display: block; width: 0; height: 100%; background: var(--lime-dark); transition: width .25s ease; }
.quiz-sidebar > p { margin: 12px 0 34px; color: #686b64; font: 10px DM Mono, monospace; text-transform: uppercase; }
.sidebar-actions { display: grid; gap: 8px; }

.quiz-button { min-height: 48px; padding: 0 15px; display: inline-flex; justify-content: space-between; align-items: center; border: 1px solid var(--ink); border-radius: 0; background: transparent; color: var(--ink); cursor: pointer; font-size: 12px; font-weight: 700; }
.quiz-button.primary { background: var(--ink); color: var(--paper); }
.quiz-button.primary:hover { background: var(--lime); color: var(--ink); }
.quiz-button.secondary:hover { border-color: var(--lime-dark); color: var(--lime-dark); }

.quiz-content { min-width: 0; }
.quiz-question { margin: 0; padding: 42px 0; border: 0; border-top: 1px solid var(--dark-line); }
.quiz-question:last-child { border-bottom: 1px solid var(--dark-line); }
.quiz-question legend { width: 100%; padding: 0; display: grid; grid-template-columns: 52px minmax(0, 1fr); gap: 18px; align-items: start; font-size: clamp(20px, 2.2vw, 30px); font-weight: 800; line-height: 1.25; letter-spacing: -.035em; }
.quiz-question legend span { padding-top: 6px; color: var(--lime-dark); font: 500 10px DM Mono, monospace; letter-spacing: .08em; }
.quiz-options { margin: 28px 0 0 70px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--dark-line); border-left: 1px solid var(--dark-line); }
.quiz-option { min-height: 105px; padding: 18px; display: grid; grid-template-columns: 28px minmax(0, 1fr); grid-template-rows: auto 1fr; gap: 10px 13px; border-right: 1px solid var(--dark-line); border-bottom: 1px solid var(--dark-line); cursor: pointer; transition: background .18s ease, color .18s ease; }
.quiz-option input { position: absolute; opacity: 0; pointer-events: none; }
.option-letter { width: 25px; height: 25px; display: grid; place-items: center; border: 1px solid var(--dark-line); font: 500 10px DM Mono, monospace; }
.option-text { grid-column: 2; color: #4e514b; font-size: 14px; line-height: 1.55; }
.quiz-option:hover { background: #e7e6df; }
.quiz-option:has(input:checked) { background: var(--ink); color: var(--paper); }
.quiz-option:has(input:checked) .option-letter { border-color: var(--lime); background: var(--lime); color: var(--ink); }
.quiz-option:has(input:checked) .option-text { color: var(--paper); }
.quiz-option:focus-within { outline: 2px solid var(--lime-dark); outline-offset: -2px; }
.quiz-option.is-correct { background: var(--lime); color: var(--ink); }
.quiz-option.is-correct .option-letter { border-color: var(--ink); background: var(--ink); color: var(--lime); }
.quiz-option.is-correct .option-text { color: var(--ink); }
.quiz-option.is-wrong { background: var(--coral); color: var(--ink); }
.quiz-option.is-wrong .option-letter { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.quiz-option.is-wrong .option-text { color: var(--ink); }

.quiz-result { display: none; margin-top: 55px; scroll-margin-top: 110px; border: 1px solid var(--ink); }
.quiz-result.visible { display: block; }
.result-heading { padding: 34px; display: flex; justify-content: space-between; gap: 35px; align-items: end; background: var(--ink); color: var(--paper); }
.result-heading div { display: flex; flex-direction: column; }
.result-heading span { color: var(--lime); font: 10px DM Mono, monospace; text-transform: uppercase; letter-spacing: .1em; }
.result-heading strong { margin-top: 8px; font-size: clamp(56px, 8vw, 104px); line-height: .9; letter-spacing: -.07em; }
.result-heading p { max-width: 380px; color: #c5c7c1; }
.result-metrics { display: grid; grid-template-columns: repeat(3, 1fr); }
.result-metrics div { padding: 25px; display: flex; flex-direction: column; gap: 7px; border-right: 1px solid var(--dark-line); }
.result-metrics div:last-child { border-right: 0; }
.result-metrics span { color: #656861; font: 10px DM Mono, monospace; text-transform: uppercase; }
.result-metrics strong { font-size: 25px; }
.answer-key { border-top: 1px solid var(--dark-line); }
.answer-key summary { padding: 22px 25px; display: flex; justify-content: space-between; cursor: pointer; font-weight: 700; list-style: none; }
.answer-key summary::-webkit-details-marker { display: none; }
.answer-key[open] summary span { transform: rotate(45deg); }
.answer-key ol { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--dark-line); }
.answer-key li { padding: 18px 25px; display: grid; grid-template-columns: 80px 1fr; gap: 15px; border-bottom: 1px solid var(--dark-line); }
.answer-key li:last-child { border-bottom: 0; }
.answer-key li b { color: var(--lime-dark); font: 500 10px DM Mono, monospace; }
.answer-key li span { color: #4e514b; font-size: 13px; }
.mobile-actions { display: none; }
.quiz-footer { background: var(--ink); }

@media (max-width: 980px) {
  .quiz-hero { min-height: 720px; }
  .quiz-hero::before { opacity: .65; }
  .quiz-intro { grid-template-columns: 1fr; gap: 20px; }
  .quiz-shell { grid-template-columns: 220px minmax(0, 1fr); gap: 36px; }
  .quiz-options { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .quiz-hero { min-height: 700px; padding: 125px 20px 160px; align-items: flex-start; }
  .quiz-hero::before { top: auto; right: -10px; bottom: 100px; font-size: 260px; transform: none; }
  .quiz-hero-grid { background-size: 54px 54px; }
  .quiz-hero h1 { font-size: clamp(48px, 14vw, 64px); }
  .quiz-hero .button { width: 100%; }
  .quiz-hero-meta { left: 20px; right: 20px; bottom: 30px; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
  .quiz-hero-meta strong { font-size: 21px; }
  .quiz-hero-meta span { font-size: 8px; overflow-wrap: anywhere; }
  .quiz-section { padding: 80px 20px; }
  .quiz-intro { margin-bottom: 50px; }
  .quiz-intro h2 { font-size: 46px; }
  .quiz-shell { display: block; }
  .quiz-sidebar { position: static; margin-bottom: 35px; }
  .sidebar-actions { display: none; }
  .quiz-question { padding: 35px 0; }
  .quiz-question legend { grid-template-columns: 36px minmax(0, 1fr); gap: 10px; font-size: 21px; }
  .quiz-options { margin: 24px 0 0; }
  .quiz-option { min-height: 90px; }
  .mobile-actions { margin-top: 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
  .result-heading { padding: 25px; display: block; }
  .result-heading p { margin: 22px 0 0; }
  .result-metrics { grid-template-columns: 1fr; }
  .result-metrics div { border-right: 0; border-bottom: 1px solid var(--dark-line); }
  .result-metrics div:last-child { border-bottom: 0; }
  .answer-key li { grid-template-columns: 55px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .quiz-progress span { transition: none; }
}