:root {
  --u6f-navy: #071f4f;
  --u6f-navy-2: #0b2c63;
  --u6f-green: #137862;
  --u6f-green-dark: #0c5d49;
  --u6f-coral: #cf4a44;
  --u6f-gold: #d9a441;
  --u6f-ink: #162235;
  --u6f-muted: #526176;
  --u6f-soft: #eef8f5;
  --u6f-blue-soft: #edf3fc;
  --u6f-gold-soft: #fff7e2;
  --u6f-coral-soft: #fff1ef;
  --u6f-border: #d8e4e0;
  --u6f-shadow: 0 16px 38px rgba(7, 31, 79, 0.12);
}

* {
  box-sizing: border-box;
}

body.u6f-page {
  overflow-x: hidden;
  background: #f4f7fb;
  color: var(--u6f-ink);
}

.u6f-hero {
  position: relative;
  min-height: clamp(520px, 72vh, 720px);
  display: grid;
  align-items: end;
  overflow: hidden;
  padding: 5.5rem 1.25rem 2.2rem;
  color: #fff;
}

.u6f-hero img,
.u6f-hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.u6f-hero img {
  object-fit: cover;
  object-position: center;
}

.u6f-hero-shade {
  background:
    linear-gradient(110deg, rgba(5, 18, 39, .96) 0%, rgba(5, 18, 39, .84) 42%, rgba(5, 18, 39, .35) 72%, rgba(5, 18, 39, .08) 100%),
    linear-gradient(0deg, rgba(19, 120, 98, .25), transparent 48%);
}

.u6f-hero-content {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.u6f-hero .eyebrow,
.kicker {
  letter-spacing: 0;
  text-transform: uppercase;
}

.u6f-hero .eyebrow {
  display: inline-flex;
  width: fit-content;
  margin: 0 0 .85rem;
  border-radius: 999px;
  padding: .45rem .8rem;
  background: rgba(255, 255, 255, .94);
  color: var(--u6f-navy);
  font-weight: 950;
}

.u6f-hero h1 {
  max-width: 850px;
  margin: 0 0 1rem;
  color: #fff;
  font-size: clamp(2.35rem, 6vw, 5rem);
  line-height: .98;
  letter-spacing: 0;
}

.u6f-hero p:not(.eyebrow) {
  max-width: 720px;
  margin: 0;
  color: #f8fbff;
  font-size: clamp(1rem, 2vw, 1.2rem);
  line-height: 1.58;
}

.u6f-meta,
.u6f-actions,
.u6f-toolbar,
.u6f-delivery {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  align-items: center;
}

.u6f-meta {
  margin: 1.25rem 0;
}

.u6f-meta span {
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: 999px;
  padding: .45rem .7rem;
  background: rgba(255, 255, 255, .12);
  color: #fff;
  font-weight: 850;
  line-height: 1.15;
}

.u6f-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.u6f-panel {
  margin-bottom: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--u6f-border);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--u6f-shadow);
}

.u6f-panel-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.2rem;
  border-bottom: 1px solid var(--u6f-border);
  background: linear-gradient(135deg, #ffffff, #eef8f5);
}

.kicker {
  margin: 0 0 .35rem;
  color: var(--u6f-coral);
  font-size: .77rem;
  font-weight: 950;
}

.u6f-panel-head h2 {
  margin: 0;
  color: var(--u6f-navy);
  font-size: clamp(1.45rem, 3vw, 2.1rem);
  line-height: 1.08;
  letter-spacing: 0;
}

.u6f-panel-head p:not(.kicker) {
  max-width: 820px;
  margin: .45rem 0 0;
  color: var(--u6f-muted);
  line-height: 1.55;
}

.u6f-map {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .75rem;
  padding: 1.2rem;
}

.u6f-map article {
  min-width: 0;
  border: 1px solid var(--u6f-border);
  border-radius: 8px;
  padding: .9rem;
  background: #f8fbfd;
}

.u6f-map strong {
  display: block;
  margin-bottom: .35rem;
  color: var(--u6f-navy);
  font-size: 1.02rem;
}

.u6f-map span {
  color: var(--u6f-muted);
  line-height: 1.45;
}

.u6f-score-card {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: .62rem .8rem;
  background: var(--u6f-blue-soft);
  color: var(--u6f-navy);
  font-weight: 950;
  white-space: nowrap;
}

.u6f-progress {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .85rem;
  align-items: center;
  padding: 1rem 1.2rem 0;
}

.u6f-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #dfeaf2;
}

.u6f-track span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--u6f-green), var(--u6f-gold));
  transition: width 180ms ease;
}

.u6f-question-list {
  display: grid;
  gap: .9rem;
  padding: 1.2rem;
}

.u6f-question-card {
  min-width: 0;
  border: 1px solid var(--u6f-border);
  border-radius: 8px;
  padding: 1rem;
  background: #fff;
}

.u6f-question-card.is-correct {
  border-color: rgba(22, 163, 74, .55);
  background: #f0fdf4;
}

.u6f-question-card.is-review {
  border-color: rgba(220, 38, 38, .45);
  background: #fff7f7;
}

.u6f-question-top {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  align-items: start;
}

.u6f-number {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--u6f-gold);
  color: #111827;
  font-weight: 950;
}

.u6f-context {
  margin: 0 0 .3rem;
  color: var(--u6f-green-dark);
  font-weight: 900;
}

.u6f-sentence {
  margin: 0;
  color: var(--u6f-ink);
  font-size: clamp(1rem, 1.55vw, 1.1rem);
  line-height: 1.55;
}

.u6f-blank {
  display: inline-block;
  min-width: 76px;
  border-bottom: 3px solid var(--u6f-gold);
  color: var(--u6f-navy);
  font-weight: 950;
  text-align: center;
}

.u6f-options {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .55rem;
  margin-top: .9rem;
}

.u6f-option {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .45rem;
  align-items: center;
  min-height: 48px;
  border: 1px solid #c9d8e2;
  border-radius: 8px;
  padding: .58rem .62rem;
  background: #f8fbff;
  color: var(--u6f-navy);
  cursor: pointer;
}

.u6f-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.u6f-letter {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: #fff;
  color: var(--u6f-navy);
  font-weight: 950;
}

.u6f-option span:last-child {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 850;
  line-height: 1.25;
}

.u6f-option:has(input:checked) {
  border-color: var(--u6f-green);
  background: var(--u6f-soft);
  box-shadow: 0 0 0 3px rgba(19, 120, 98, .12);
}

.u6f-reason {
  display: none;
  margin: .85rem 0 0;
  border-left: 4px solid var(--u6f-coral);
  padding: .72rem .8rem;
  background: var(--u6f-coral-soft);
  color: #7f1d1d;
  line-height: 1.45;
}

.u6f-question-card.is-review .u6f-reason,
.u6f-question-card.is-correct .u6f-reason {
  display: block;
}

.u6f-question-card.is-correct .u6f-reason {
  border-left-color: var(--u6f-green);
  background: var(--u6f-soft);
  color: #124c3f;
}

.u6f-toolbar {
  justify-content: flex-end;
  padding: 0 1.2rem 1.2rem;
}

.u6f-button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: .72rem 1rem;
  font: inherit;
  font-weight: 950;
  line-height: 1.15;
  text-decoration: none;
  cursor: pointer;
  transition: transform 150ms ease, background-color 150ms ease, border-color 150ms ease;
}

.u6f-button:hover,
.u6f-button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.u6f-button.primary {
  background: var(--u6f-coral);
  color: #fff;
}

.u6f-button.navy {
  background: var(--u6f-navy);
  color: #fff;
}

.u6f-button.soft {
  border-color: #bed8d1;
  background: var(--u6f-soft);
  color: var(--u6f-green-dark);
}

.u6f-button.ghost {
  border-color: var(--u6f-border);
  background: #fff;
  color: var(--u6f-navy);
}

.u6f-button:disabled {
  cursor: not-allowed;
  opacity: .52;
  transform: none;
}

.u6f-feedback,
.u6f-delivery-status {
  margin: 0 1.2rem 1.2rem;
  border: 1px solid var(--u6f-border);
  border-radius: 8px;
  padding: .85rem;
  background: #f8fbff;
  color: var(--u6f-muted);
  font-weight: 800;
  line-height: 1.45;
}

.u6f-feedback.success,
.u6f-delivery-status.success {
  border-color: rgba(19, 120, 98, .35);
  background: var(--u6f-soft);
  color: var(--u6f-green-dark);
}

.u6f-feedback.error,
.u6f-delivery-status.error {
  border-color: rgba(207, 74, 68, .35);
  background: var(--u6f-coral-soft);
  color: #7f1d1d;
}

.u6f-delivery {
  justify-content: space-between;
  padding: 1.2rem;
}

.u6f-delivery-summary {
  display: grid;
  gap: .25rem;
  min-width: min(100%, 430px);
}

.u6f-delivery-summary strong {
  color: var(--u6f-navy);
  font-size: 1.15rem;
}

.u6f-delivery-summary span {
  color: var(--u6f-muted);
  line-height: 1.45;
}

.u6f-delivery-status {
  flex-basis: 100%;
  margin: .4rem 0 0;
}

@media (max-width: 980px) {
  .u6f-map,
  .u6f-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .u6f-panel-head {
    display: grid;
  }

  .u6f-score-card {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .u6f-page .navbar {
    align-items: center;
    padding: .65rem 0;
  }

  .u6f-page .nav-links {
    display: grid !important;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .35rem;
    margin-top: .5rem;
  }

  .u6f-page .nav-links a {
    display: block;
    text-align: center;
    white-space: normal;
  }

  .u6f-hero {
    min-height: auto;
    padding: 2rem .75rem 1.2rem;
  }

  .u6f-hero img {
    object-position: 58% center;
  }

  .u6f-hero-shade {
    background: linear-gradient(180deg, rgba(5, 18, 39, .96) 0%, rgba(5, 18, 39, .86) 64%, rgba(5, 18, 39, .62) 100%);
  }

  .u6f-hero h1 {
    font-size: clamp(2.2rem, 13vw, 3.3rem);
  }

  .u6f-shell {
    width: min(100% - .85rem, 1180px);
    padding-top: 1rem;
  }

  .u6f-panel-head,
  .u6f-map,
  .u6f-question-list,
  .u6f-delivery {
    padding: .85rem;
  }

  .u6f-progress {
    grid-template-columns: 1fr;
    padding: .85rem .85rem 0;
  }

  .u6f-map,
  .u6f-options {
    grid-template-columns: minmax(0, 1fr);
  }

  .u6f-question-card {
    padding: .85rem;
  }

  .u6f-question-top {
    grid-template-columns: 1fr;
  }

  .u6f-number {
    width: fit-content;
    min-width: 34px;
  }

  .u6f-toolbar {
    justify-content: stretch;
    padding: 0 .85rem .85rem;
  }

  .u6f-button {
    width: 100%;
  }

  .u6f-feedback {
    margin: 0 .85rem .85rem;
  }
}