.knowledge-hero {
  min-height: 640px;
  background:
    radial-gradient(circle at 85% 18%, rgba(245, 171, 53, .2), transparent 27rem),
    linear-gradient(145deg, #fffdf8 0%, #f2f8f7 56%, #eef5fb 100%);
}

.knowledge-hero .vocab-hero-copy h1 span { color: #0f766e; }

.knowledge-page [hidden] { display: none !important; }

.knowledge-reassure {
  display: flex;
  align-items: center;
  width: fit-content;
  margin: -8px 0 24px;
  padding: 10px 14px;
  border: 1px solid #cce7df;
  border-radius: 999px;
  background: #edf9f6;
  color: #315f58;
  font-size: .9rem;
}

.knowledge-reassure strong { margin-right: 5px; color: #0f655e; }

.knowledge-start {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(390px, .85fr);
  gap: 30px 56px;
  width: min(1180px, calc(100% - 40px));
  margin: -34px auto 66px;
  padding: clamp(28px, 4vw, 46px);
  border: 1px solid rgba(14, 101, 94, .16);
  border-radius: 28px;
  background: #fff;
  box-shadow: 0 24px 70px rgba(24, 67, 61, .13);
  position: relative;
  z-index: 2;
}

.knowledge-start-copy h2 { margin: 4px 0 12px; color: #0a204d; font-size: clamp(30px, 3.2vw, 46px); }
.knowledge-start-copy > p:not(.eyebrow) { max-width: 650px; margin: 0 0 22px; color: #5c6f6a; line-height: 1.7; }

.knowledge-start-steps { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.knowledge-start-steps li { display: flex; gap: 14px; align-items: center; padding: 13px 15px; border-radius: 14px; background: #f4f8f7; }
.knowledge-start-steps span { display: grid; width: 34px; height: 34px; place-items: center; flex: 0 0 auto; border-radius: 50%; background: #0f766e; color: #fff; font-size: .7rem; font-weight: 900; }
.knowledge-start-steps strong, .knowledge-start-steps small { display: block; }
.knowledge-start-steps strong { color: #173d38; font-size: .93rem; }
.knowledge-start-steps small { margin-top: 2px; color: #71817d; }

.knowledge-route-row { display: flex; grid-column: 1 / -1; flex-wrap: wrap; gap: 8px; align-items: center; padding-top: 18px; border-top: 1px solid #e7efed; color: #687975; font-size: .86rem; }
.knowledge-route-row button { padding: 8px 12px; border: 1px solid #cbdcd8; border-radius: 999px; background: #fff; color: #165d56; font-weight: 800; cursor: pointer; }
.knowledge-route-row button:hover, .knowledge-route-row button:focus-visible { border-color: #0f766e; background: #eaf7f4; outline: none; }

.knowledge-module-section {
  width: min(1180px, calc(100% - 40px));
  margin: 28px auto 64px;
}

.knowledge-module-section .section-heading { max-width: 760px; margin-bottom: 24px; }

.knowledge-module-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.knowledge-module-grid button {
  min-height: 164px;
  padding: 22px;
  border: 1px solid rgba(18, 83, 75, .13);
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 15px 40px rgba(24, 67, 61, .08);
  color: #183d38;
  text-align: left;
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.knowledge-module-grid button:hover,
.knowledge-module-grid button:focus-visible {
  transform: translateY(-3px);
  border-color: #0f766e;
  box-shadow: 0 20px 46px rgba(24, 67, 61, .13);
  outline: none;
}

.knowledge-module-grid span {
  display: block;
  margin-bottom: 20px;
  color: #d88716;
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .12em;
}

.knowledge-module-grid strong { display: block; margin-bottom: 8px; font-size: 1.1rem; }
.knowledge-module-grid small { display: block; color: #667773; line-height: 1.55; }

.knowledge-toolbar { border-top: 4px solid #0f766e; }

.knowledge-primary-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(230px, .7fr);
  gap: 14px;
}

.knowledge-primary-grid label > span {
  display: block;
  margin-bottom: 7px;
  color: #475e7a;
  font-size: 12px;
  font-weight: 750;
}

.knowledge-primary-grid select {
  width: 100%;
  height: 50px;
  padding: 0 34px 0 13px;
  border: 1px solid #ccd8e8;
  border-radius: 10px;
  background: #fff;
  color: #142c4f;
  cursor: pointer;
}

.knowledge-advanced-filters { margin-top: 14px; border: 1px solid #dce6e3; border-radius: 13px; background: #f8fbfa; }
.knowledge-advanced-filters summary { display: flex; gap: 10px 18px; align-items: center; padding: 13px 15px; color: #184c46; cursor: pointer; list-style: none; }
.knowledge-advanced-filters summary::-webkit-details-marker { display: none; }
.knowledge-advanced-filters summary::after { content: '+'; margin-left: auto; font-size: 1.35rem; font-weight: 500; }
.knowledge-advanced-filters[open] summary::after { content: '−'; }
.knowledge-advanced-filters summary span { color: #75847f; font-size: .82rem; }
.knowledge-advanced-filters .vocab-filter-grid { padding: 4px 14px 15px; }

.knowledge-session-banner {
  display: flex;
  justify-content: space-between;
  gap: 22px;
  align-items: center;
  margin: 24px 0 14px;
  padding: 18px 20px;
  border-radius: 16px;
  background: linear-gradient(120deg, #0b5f58, #09345f);
  color: #fff;
}

.knowledge-session-banner span, .knowledge-session-banner strong, .knowledge-session-banner small { display: block; }
.knowledge-session-banner span { margin-bottom: 3px; color: #f4bd5d; font-size: .72rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.knowledge-session-banner strong { font-size: 1.05rem; }
.knowledge-session-banner small { margin-top: 3px; color: rgba(255,255,255,.72); }
.knowledge-session-banner button { padding: 10px 14px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; background: rgba(255,255,255,.1); color: #fff; font-weight: 800; cursor: pointer; }
.knowledge-session-banner button:hover, .knowledge-session-banner button:focus-visible { background: rgba(255,255,255,.2); outline: none; }

.knowledge-result-actions { display: flex; align-items: center; gap: 10px; }
.knowledge-export-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 13px;
  border: 1px solid #b9d4cf;
  border-radius: 11px;
  background: #effaf7;
  color: #115e59;
  font: inherit;
  font-size: .86rem;
  font-weight: 750;
  cursor: pointer;
}
.knowledge-export-button span { padding: 3px 5px; border-radius: 5px; background: #b42318; color: #fff; font-size: .64rem; letter-spacing: .04em; }
.knowledge-export-button:hover { border-color: #0f766e; background: #e0f5ef; }
.knowledge-export-button:focus-visible { outline: 3px solid rgba(15, 118, 110, .24); outline-offset: 2px; }
.knowledge-export-button:disabled { opacity: .48; cursor: not-allowed; }
.knowledge-export-status { display: block; min-height: 1.2em; margin-top: 4px; color: #63746f; font-size: .78rem; }

.knowledge-card .vocab-card-head { align-items: flex-start; }
.knowledge-card .vocab-card-head h3 { font-size: 1.23rem; line-height: 1.32; }

.knowledge-module-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 5px 9px;
  border-radius: 999px;
  background: #e7f5f2;
  color: #0f655e;
  font-size: .72rem;
  font-weight: 800;
}

.knowledge-pattern {
  margin: 12px 0;
  padding: 12px 14px;
  border-left: 3px solid #d98b1d;
  border-radius: 0 10px 10px 0;
  background: #fff9ee;
  color: #583f19;
  line-height: 1.55;
}

.knowledge-example {
  margin: 12px 0;
  padding: 13px 14px;
  border-radius: 12px;
  background: #f3f7fa;
  color: #294450;
  font-size: .92rem;
  line-height: 1.6;
}

.knowledge-card details p { white-space: normal; }
.knowledge-card.is-mastered { border-color: rgba(15, 118, 110, .38); }

.knowledge-row {
  grid-template-columns: 58px minmax(170px, 1.15fr) minmax(220px, 1.5fr) 150px auto;
}

.knowledge-row > p { margin: 0; }
.knowledge-row > span { color: #60746f; font-size: .82rem; }

.knowledge-methodology { margin-top: 70px; }

@media (max-width: 1000px) {
  .knowledge-start { grid-template-columns: 1fr; }
  .knowledge-route-row { grid-column: auto; }
  .knowledge-module-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .knowledge-row { grid-template-columns: 46px minmax(150px, 1fr) minmax(180px, 1.5fr) auto; }
  .knowledge-row > span { display: none; }
}

@media (max-width: 640px) {
  .knowledge-reassure { align-items: flex-start; border-radius: 15px; line-height: 1.5; }
  .knowledge-start { width: min(100% - 24px, 1180px); margin-top: -12px; padding: 24px 20px; border-radius: 22px; }
  .knowledge-primary-grid { grid-template-columns: 1fr; }
  .knowledge-advanced-filters summary { align-items: flex-start; }
  .knowledge-advanced-filters summary span { display: none; }
  .knowledge-session-banner { align-items: flex-start; flex-direction: column; }
  .vocab-results-head { align-items: flex-start; gap: 12px; }
  .knowledge-result-actions { width: 100%; justify-content: space-between; }
  .knowledge-export-button { min-height: 44px; }
  .knowledge-module-section { width: min(100% - 24px, 1180px); margin-bottom: 44px; }
  .knowledge-module-grid { grid-template-columns: 1fr; }
  .knowledge-module-grid button { min-height: 132px; }
  .knowledge-row { grid-template-columns: 40px 1fr auto; }
  .knowledge-row > p { grid-column: 2 / -1; }
}

/* Reward School brand alignment */
.knowledge-page {
  --knowledge-navy: var(--navy, #061c46);
  --knowledge-blue: var(--blue, #073d8f);
  --knowledge-gold: var(--gold, #c9912f);
  --knowledge-green: var(--green, #167255);
  --knowledge-line: var(--line, #dbe5f2);
}

.knowledge-hero {
  background:
    radial-gradient(circle at 86% 18%, rgba(201, 145, 47, .2), transparent 25rem),
    linear-gradient(145deg, #fff 0%, #f5f9ff 58%, #eaf3ff 100%);
}
.knowledge-hero .vocab-hero-copy h1 span { color: var(--knowledge-blue); }
.knowledge-reassure { border-color: #c9dbf2; background: #edf5ff; color: #3d5778; }
.knowledge-reassure strong { color: var(--knowledge-blue); }

.knowledge-start {
  border-color: rgba(7, 61, 143, .14);
  border-radius: 22px;
  box-shadow: 0 28px 70px rgba(6, 28, 70, .13);
}
.knowledge-start-copy h2 { color: var(--knowledge-navy); }
.knowledge-start-copy > p:not(.eyebrow) { color: var(--muted); }
.knowledge-start-steps li { border: 1px solid #e1eaf5; border-radius: 12px; background: #f7faff; }
.knowledge-start-steps span { background: var(--knowledge-navy); box-shadow: inset 0 0 0 2px rgba(255,255,255,.12); }
.knowledge-start-steps strong { color: var(--knowledge-navy); }
.knowledge-start-steps small { color: var(--muted); }
.knowledge-route-row { border-color: var(--knowledge-line); color: var(--muted); }
.knowledge-route-row button { border-color: #bfcde0; border-radius: 8px; color: var(--knowledge-blue); }
.knowledge-route-row button:hover, .knowledge-route-row button:focus-visible { border-color: var(--knowledge-blue); background: #edf5ff; }

.knowledge-module-grid button {
  min-height: 156px;
  border-color: var(--knowledge-line);
  border-top: 4px solid var(--knowledge-blue);
  border-radius: 14px;
  box-shadow: 0 12px 34px rgba(6, 28, 70, .07);
  color: var(--knowledge-navy);
}
.knowledge-module-grid button:nth-child(3n + 2) { border-top-color: var(--knowledge-gold); }
.knowledge-module-grid button:nth-child(3n) { border-top-color: var(--knowledge-green); }
.knowledge-module-grid button:hover, .knowledge-module-grid button:focus-visible { border-color: var(--knowledge-blue); box-shadow: 0 18px 42px rgba(6, 28, 70, .14); }
.knowledge-module-grid span { color: var(--knowledge-gold); }
.knowledge-module-grid small { color: var(--muted); }

.knowledge-toolbar {
  border-top-color: var(--knowledge-gold);
  border-radius: 16px;
  box-shadow: 0 18px 46px rgba(6, 28, 70, .1);
}
.knowledge-library-heading { align-items: center; }
.knowledge-library-heading > div:first-child { min-width: 0; }
.knowledge-quick-row { margin-top: 16px; }
.knowledge-toolbar .vocab-quick-filters button { border-color: #c7d5e7; border-radius: 999px; background: #edf4fd; color: var(--knowledge-blue); }
.knowledge-toolbar .vocab-quick-filters button:hover, .knowledge-toolbar .vocab-quick-filters button:focus-visible { border-color: var(--knowledge-blue); background: var(--knowledge-blue); color: #fff; outline: none; }
.knowledge-results-bar { padding: 2px 0; }
.knowledge-primary-grid select, .knowledge-primary-grid input { border-color: #c8d5e6; border-radius: 8px; }
.knowledge-primary-grid select:focus, .knowledge-primary-grid input:focus { border-color: var(--knowledge-blue); box-shadow: 0 0 0 3px rgba(7, 61, 143, .11); outline: none; }
.knowledge-advanced-filters { border-color: #d7e2f0; border-radius: 10px; background: #f7faff; }
.knowledge-advanced-filters summary { color: var(--knowledge-navy); }
.knowledge-advanced-filters summary::after { color: var(--knowledge-gold); }
.knowledge-advanced-filters summary span { color: var(--muted); }
.knowledge-toolbar .vocab-quick-row button { border-color: #c7d5e7; border-radius: 7px; background: #fff; color: var(--knowledge-blue); }
.knowledge-toolbar .vocab-quick-row button:hover { border-color: var(--knowledge-blue); background: #edf5ff; }
.knowledge-toolbar .vocab-reset { color: #78591c; background: #fff7e5; border-color: #ead29c; }

.knowledge-account-card { flex: 0 0 310px; }
.knowledge-account-guest, .knowledge-account-user {
  min-height: 154px;
  padding: 20px 22px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 14px;
  background: linear-gradient(135deg, var(--knowledge-navy), var(--knowledge-blue));
  box-shadow: 0 18px 42px rgba(6, 28, 70, .2);
  color: #fff;
}
.knowledge-account-guest span, .knowledge-account-user > span { display: block; margin-bottom: 8px; color: #f0c875; font-size: .7rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.knowledge-account-guest strong { display: block; font-size: 1.05rem; }
.knowledge-account-guest p { margin: 7px 0 15px; color: rgba(255,255,255,.72); font-size: .8rem; line-height: 1.5; }
.knowledge-account-guest a, .knowledge-account-user a { display: inline-flex; padding: 8px 12px; border-radius: 7px; background: var(--knowledge-gold); color: #fff; font-size: .78rem; font-weight: 850; text-decoration: none; }
.knowledge-account-user.vocab-progress-card { background: linear-gradient(135deg, var(--knowledge-navy), var(--knowledge-blue)); }
.knowledge-account-user small { display: block; margin: 9px 0 12px; color: rgba(255,255,255,.7); font-size: .73rem; }
.knowledge-account-user a { background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.24); }

.knowledge-session-banner { border-radius: 12px; background: linear-gradient(120deg, var(--knowledge-navy), var(--knowledge-blue)); }
.knowledge-session-banner span { color: #f0c875; }
.knowledge-session-banner button { border-radius: 7px; }

.knowledge-export-button { border-color: #bccde3; border-radius: 8px; background: #f1f6fd; color: var(--knowledge-blue); }
.knowledge-export-button span { border-radius: 3px; background: var(--knowledge-gold); }
.knowledge-export-button:hover { border-color: var(--knowledge-blue); background: #e7f0fc; }
.knowledge-export-button:focus-visible { outline-color: rgba(7, 61, 143, .22); }

.knowledge-card {
  border-color: var(--knowledge-line);
  border-top: 3px solid var(--knowledge-blue);
  border-radius: 14px;
  box-shadow: 0 10px 28px rgba(6, 28, 70, .07);
}
.knowledge-card:hover { border-color: #b7c9e0; box-shadow: 0 16px 36px rgba(6, 28, 70, .12); }
.knowledge-card .vocab-card-head h3 { color: var(--knowledge-navy); }
.knowledge-module-label { border-radius: 6px; background: #e8f1fd; color: var(--knowledge-blue); }
.knowledge-pattern { border-left-color: var(--knowledge-gold); border-radius: 0 8px 8px 0; background: #fff8e9; color: #5f481b; }
.knowledge-example { border: 1px solid #dfe8f3; border-radius: 8px; background: #f6f9fd; color: #263f63; }
.knowledge-card .vocab-memory { border-left-color: var(--knowledge-gold); border-radius: 8px; background: #fffaf0; }
.knowledge-card details { border-color: #dce6f2; border-radius: 8px; background: #f8fbff; }
.knowledge-card details summary { color: var(--knowledge-blue); }
.knowledge-card .vocab-card-actions button { border-radius: 7px; }
.knowledge-card .vocab-card-actions button:last-child { border-color: var(--knowledge-blue); background: var(--knowledge-blue); color: #fff; }
.knowledge-card.is-mastered { border-color: rgba(22, 114, 85, .48); border-top-color: var(--knowledge-green); }
.knowledge-row.is-mastered { border-left: 3px solid var(--knowledge-green); }

@media (max-width: 760px) {
  .knowledge-account-card { width: 100%; flex-basis: auto; }
  .knowledge-account-guest, .knowledge-account-user { min-height: auto; }
  .knowledge-result-actions { width: 100%; justify-content: space-between; }
}

@media (max-width: 640px) {
  html, body.vocab-body { max-width: 100vw; overflow-x: hidden; }
  .vocab-body .site-header { width: 100vw; max-width: 100vw; box-sizing: border-box; gap: 12px; padding-inline: 18px; }
  .vocab-body .brand { min-width: 0; }
  .vocab-body .brand-mark { width: 48px; height: 38px; }
  .vocab-body .menu-toggle { flex: 0 0 42px; }
  .knowledge-page, .knowledge-hero { width: 100vw; max-width: 100vw; box-sizing: border-box; }
  .knowledge-hero { padding: 48px 20px 58px; }
  .knowledge-hero > *, .knowledge-hero .vocab-hero-copy { min-width: 0; max-width: 100%; }
  .knowledge-hero .vocab-hero-copy h1 { width: calc(100vw - 40px); max-width: calc(100vw - 40px); font-size: clamp(42px, 13.5vw, 58px); white-space: normal; word-break: break-all; overflow-wrap: anywhere; }
  .knowledge-hero .vocab-lead { width: calc(100vw - 40px); max-width: calc(100vw - 40px); font-size: 17px; line-height: 1.65; word-break: break-word; overflow-wrap: anywhere; }
  .knowledge-reassure { width: auto; max-width: 100%; box-sizing: border-box; }
  .knowledge-hero .vocab-hero-actions { display: grid; grid-template-columns: 1fr; }
  .knowledge-hero .vocab-hero-actions .button { width: 100%; box-sizing: border-box; }
  .knowledge-hero .vocab-disclaimer { max-width: 100%; box-sizing: border-box; overflow-wrap: anywhere; }
  .knowledge-hero .vocab-hero-panel { min-width: 0; gap: 10px; }
  .knowledge-hero .vocab-hero-panel article { min-width: 0; padding: 16px; }
  .knowledge-hero .vocab-hero-panel strong { font-size: clamp(31px, 10vw, 42px); }
  .knowledge-start, .knowledge-module-section, .vocab-library { max-width: calc(100% - 24px); box-sizing: border-box; }
  .knowledge-result-actions { align-items: stretch; flex-direction: column; }
  .knowledge-export-button { justify-content: center; width: 100%; }
}