:root {
  color-scheme: light;
  --ink: #101a3a;
  --muted: #65708c;
  --blue: #164bd7;
  --blue-2: #0c3bad;
  --blue-soft: #edf3ff;
  --violet-soft: #f4f1ff;
  --green: #159258;
  --orange: #ef8b18;
  --paper: #ffffff;
  --canvas: #f7f8fc;
  --line: #dfe4ef;
  --line-dark: #cdd4e2;
  --shadow: 0 18px 45px rgba(21, 39, 88, .08);
  --radius: 18px;
  font-family: "Segoe UI", "Noto Sans", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--canvas); }
body { margin: 0; min-height: 100vh; color: var(--ink); background: var(--canvas); }
button, input, select, textarea { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid rgba(22, 75, 215, .24); outline-offset: 2px; }
[hidden] { display: none !important; }
.app-shell { min-height: 100vh; }

.topbar {
  position: sticky; top: 0; z-index: 30; height: 74px; display: grid;
  grid-template-columns: 260px minmax(420px, 1fr) auto; align-items: stretch;
  padding: 0 24px; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.96);
  backdrop-filter: blur(18px);
}
.brand { border: 0; background: transparent; padding: 10px 0; text-align: left; cursor: pointer; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; }
.brand strong { font: 500 30px/1 Georgia, serif; letter-spacing: -.03em; }
.brand span { margin: 4px 0 0 46px; font-size: 8px; letter-spacing: .28em; color: var(--muted); }
.main-nav { display: flex; align-items: stretch; gap: 14px; justify-content: center; }
.nav-button { position: relative; border: 0; background: transparent; padding: 0 14px; font-weight: 650; color: #556078; cursor: pointer; }
.nav-button::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 3px; border-radius: 3px 3px 0 0; background: transparent; }
.nav-button:hover { color: var(--ink); }
.nav-button.is-active { color: var(--blue); }
.nav-button.is-active::after { background: var(--blue); }
.nav-compact { display: none; }
.profile-control { display: flex; align-items: center; gap: 8px; }
.profile-control label { color: var(--muted); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.profile-control select { min-width: 158px; max-width: 220px; border: 1px solid var(--line-dark); border-radius: 10px; background: white; padding: 9px 30px 9px 12px; }
.profile-control button, .mobile-menu { width: 34px; height: 34px; border-radius: 50%; border: 0; color: var(--blue); background: var(--blue-soft); font-size: 20px; cursor: pointer; }
.mobile-menu { display: none; }

.workspace { display: grid; grid-template-columns: 268px minmax(0, 1fr); min-height: calc(100vh - 74px); }
.course-rail, .context-rail { position: sticky; top: 74px; height: calc(100vh - 74px); overflow: auto; background: white; }
.course-rail { border-right: 1px solid var(--line); padding: 20px 16px 26px; }
.context-rail { display: none; }
.main { min-width: 0; width: 100%; max-width: 1160px; margin: 0 auto; padding: 38px clamp(24px, 4vw, 54px) 80px; }
.eyebrow { display: block; color: #737d92; font-size: 10px; font-weight: 850; letter-spacing: .11em; text-transform: uppercase; }
.rail-head > div:first-child { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.rail-head strong { font: 700 14px/1 Georgia, serif; }
.rail-progress { height: 4px; margin-top: 12px; background: #e8ebf1; border-radius: 10px; overflow: hidden; }
.rail-progress span { display: block; height: 100%; width: 0; background: var(--blue); transition: width .3s ease; }
.module-search { height: 42px; margin: 18px 0; border: 1px solid var(--line-dark); border-radius: 10px; display: flex; align-items: center; gap: 8px; padding: 0 11px; color: var(--muted); }
.module-search:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(22,75,215,.08); }
.module-search input { min-width: 0; width: 100%; border: 0; outline: 0; background: transparent; }
.level-group { margin: 18px 0 22px; }
.level-heading { display: flex; justify-content: space-between; align-items: center; margin: 0 4px 8px; color: var(--muted); font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.level-heading span:last-child { letter-spacing: 0; }
.module-link { width: 100%; border: 0; border-left: 3px solid transparent; border-radius: 0 10px 10px 0; padding: 9px 9px 9px 7px; background: transparent; display: grid; grid-template-columns: 28px 1fr; gap: 8px; text-align: left; cursor: pointer; }
.module-link:hover { background: #f7f9fd; }
.module-link.is-active { border-left-color: var(--blue); background: var(--blue-soft); }
.module-index { width: 24px; height: 24px; border: 1px solid var(--line-dark); border-radius: 50%; display: grid; place-items: center; color: #717b8f; font-size: 10px; }
.module-link.is-complete .module-index { color: var(--green); border-color: #a5d9bf; background: #edfaf3; }
.module-link strong { display: block; font-size: 12px; line-height: 1.25; }
.module-link small { display: block; margin-top: 3px; color: #8a93a5; font-size: 10px; }
.loading-state { min-height: 55vh; display: grid; place-items: center; align-content: center; color: var(--muted); }
.pulse { width: 26px; height: 26px; border: 3px solid #d8e3ff; border-top-color: var(--blue); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.page-head { display: block; margin-bottom: 28px; }
.page-kicker { color: var(--blue); font: 700 16px/1.2 Georgia, serif; }
h1, h2, h3 { font-family: Georgia, "Times New Roman", serif; letter-spacing: -.025em; }
.page-head h1, .module-head h1 { margin: 7px 0 10px; font-size: clamp(34px, 4vw, 52px); line-height: 1.04; font-weight: 500; }
.page-head p, .module-head p { max-width: 760px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.6; }
.route-summary { min-width: 190px; padding: 15px 17px; border: 1px solid var(--line); border-radius: 14px; background: white; box-shadow: var(--shadow); }
.route-summary strong { display: block; font: 500 30px/1 Georgia, serif; color: var(--blue); }
.route-summary span { display: block; margin-top: 6px; color: var(--muted); font-size: 12px; }
.principle-banner { margin-bottom: 24px; padding: 18px 22px; border: 1px solid #cad9ff; border-radius: 14px; background: linear-gradient(110deg, #f7faff, #eef3ff); display: flex; gap: 14px; align-items: center; }
.principle-banner b { flex: 0 0 auto; width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--blue); color: white; font: 700 18px Georgia, serif; }
.principle-banner strong { display: block; font-size: 13px; }
.principle-banner p { margin: 3px 0 0; color: var(--muted); font-size: 12px; line-height: 1.5; }
.route-level { margin: 20px 0; border: 1px solid var(--line); border-radius: var(--radius); background: white; overflow: hidden; box-shadow: 0 8px 26px rgba(23,43,89,.04); }
.route-level-head { display: grid; grid-template-columns: 72px 1fr auto; gap: 18px; align-items: center; padding: 20px 22px; background: #fbfcff; border-bottom: 1px solid var(--line); }
.level-badge { width: 56px; height: 56px; display: grid; place-items: center; border: 1px solid #b9caf6; border-radius: 15px; color: var(--blue); background: white; font: 700 18px Georgia, serif; }
.route-level-head h2 { margin: 0 0 5px; font-size: 22px; }
.route-level-head p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.route-level-head > span { color: var(--muted); font-size: 11px; text-align: right; }
.route-modules { padding: 8px 14px 14px; }
.route-module { width: 100%; border: 0; border-bottom: 1px solid #edf0f5; background: white; padding: 14px 8px; display: grid; grid-template-columns: 38px minmax(180px, 1.05fr) 1.4fr auto; gap: 15px; align-items: center; text-align: left; cursor: pointer; }
.route-module:last-child { border-bottom: 0; }
.route-module:hover { background: #f8faff; }
.route-module > span:first-child { color: var(--blue); font: 700 13px Georgia, serif; }
.route-module strong { font-size: 13px; }
.route-module p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.45; }
.route-module small { padding: 5px 8px; border-radius: 12px; background: var(--blue-soft); color: var(--blue); white-space: nowrap; }

.module-head { margin-bottom: 20px; }
.module-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.module-meta span { padding: 6px 9px; border: 1px solid var(--line); border-radius: 16px; background: white; color: var(--muted); font-size: 10px; font-weight: 750; }
.pass-strip { display: grid; grid-template-columns: repeat(8, 1fr); gap: 5px; margin: 22px 0; }
.pass-tab { position: relative; min-width: 0; height: 7px; border: 0; border-radius: 8px; background: #dfe3eb; cursor: pointer; }
.pass-tab.is-visited { background: #89a8f4; }
.pass-tab.is-active { background: var(--blue); box-shadow: 0 0 0 3px rgba(22,75,215,.12); }
.pass-tab span { position: absolute; top: 13px; left: 50%; transform: translateX(-50%); font-size: 9px; color: var(--muted); white-space: nowrap; }
.study-card { margin-top: 34px; border: 1px solid var(--line); border-radius: 20px; padding: clamp(24px, 3.5vw, 42px); background: white; box-shadow: var(--shadow); }
.study-card-label { color: #7d8698; font-size: 10px; font-weight: 850; letter-spacing: .1em; text-transform: uppercase; }
.study-card h2 { margin: 9px 0 12px; font-size: clamp(26px, 3vw, 36px); }
.study-card > p { max-width: 760px; color: var(--muted); line-height: 1.6; }
.meaning-anchor { margin: 22px 0; padding: 20px 22px; border-left: 4px solid var(--blue); border-radius: 0 14px 14px 0; background: var(--blue-soft); }
.meaning-anchor span { display: block; color: var(--blue); font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.meaning-anchor strong { display: block; margin-top: 8px; font: 500 21px/1.4 Georgia, serif; }
.audio-panel { margin: 20px 0; padding: 16px; border: 1px solid #cbd8f6; border-radius: 14px; display: flex; gap: 14px; align-items: center; background: #fbfdff; }
.audio-button { flex: 0 0 auto; width: 46px; height: 46px; border: 0; border-radius: 50%; background: var(--blue); color: white; cursor: pointer; font-size: 17px; }
.wave { flex: 1; display: flex; gap: 3px; align-items: center; height: 34px; }
.wave i { display: block; width: 3px; height: var(--h); border-radius: 4px; background: #a9bce9; }
.audio-panel.is-playing .wave i { background: var(--blue); animation: wave .8s ease-in-out infinite alternate; animation-delay: var(--d); }
@keyframes wave { to { transform: scaleY(.45); } }
.audio-copy { min-width: 120px; }
.audio-copy strong, .audio-copy small { display: block; }
.audio-copy small { margin-top: 3px; color: var(--muted); }
.verified-audio-panel { margin: 20px 0; padding: 18px; border: 1px solid #b9c9ef; border-radius: 16px; background: #f8faff; }
.verified-audio-panel.is-playing { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(47, 91, 234, .08); }
.verified-audio-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; margin-bottom: 14px; }
.verified-audio-head div > span, .verified-audio-head strong, .verified-audio-head small { display: block; }
.verified-audio-head div > span { margin-bottom: 4px; color: var(--blue); font-size: 10px; font-weight: 850; letter-spacing: .07em; text-transform: uppercase; }
.verified-audio-head strong { font-size: 15px; }
.verified-audio-head small { margin-top: 4px; color: var(--muted); }
.verified-badge { flex: 0 0 auto; padding: 5px 9px; border-radius: 999px; background: #e3f6ec; color: #17613e; font-size: 10px; font-weight: 850; text-transform: uppercase; letter-spacing: .05em; }
.verified-audio { display: block; width: 100%; height: 44px; accent-color: var(--blue); }
.audio-transport { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 12px; }
.audio-transport button, .audio-transport select { min-height: 34px; border: 1px solid #c8d2e8; border-radius: 9px; background: white; color: #26334d; font: inherit; font-size: 12px; font-weight: 750; cursor: pointer; }
.audio-transport button { padding: 0 12px; }
.audio-transport label { margin-left: auto; display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12px; font-weight: 700; }
.audio-transport select { padding: 0 8px; }
.audio-integrity-note { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; padding: 12px 14px; border-left: 3px solid #d99c32; background: #fffaf0; color: #675632; font-size: 12px; line-height: 1.5; }
.audio-integrity-note strong { flex: 0 0 auto; }
.official-exercise-audio { margin-top: 18px; padding: 16px; border: 1px solid #d8dfef; border-radius: 16px; background: #fbfcff; }
.official-audio-intro { display: grid; gap: 5px; color: #46516a; font-size: 12px; line-height: 1.5; }
.official-audio-intro strong { color: var(--ink); font-size: 14px; }
.official-exercise-audio .verified-audio-panel { margin: 12px 0 0; background: #fff; }
.lexical-safety-note { display: grid; gap: 4px; margin-top: 14px; padding: 12px 14px; border-left: 3px solid var(--blue); background: #f3f6ff; color: #46516a; font-size: 12px; line-height: 1.5; }
.lexical-safety-note strong { color: var(--ink); }
.reference-separation-note { display: flex; gap: 10px; align-items: flex-start; margin-top: 14px; padding: 12px 14px; border-left: 3px solid #6f7f9e; background: #f4f6fa; color: #4b5870; font-size: 12px; line-height: 1.5; }
.reference-separation-note strong { flex: 0 0 auto; }
.resource-relation-note { padding: 10px 14px; border-bottom: 1px solid var(--line); background: #fff8e8; color: #6b582d; font-size: 12px; line-height: 1.45; }
.editorial-gap { margin: 20px 0; padding: 20px; border: 1px solid #ddbd75; border-radius: 14px; background: #fff9ec; color: #594a2c; }
.editorial-gap strong { display: block; margin-bottom: 8px; font-size: 17px; }
.editorial-gap p { margin: 0; line-height: 1.6; }
.lesson-link.is-source-only { opacity: .72; }
.lesson-link.is-source-only .module-index { border-style: dashed; }
.language-card { padding: 22px; border: 1px solid var(--line); border-radius: 15px; background: #fcfcfe; }
.greek-large { margin: 0; color: #143aa0; font: 500 clamp(25px, 3vw, 36px)/1.45 Georgia, serif; }
.pronunciation { display: block; margin-top: 8px; color: #6a7390; font-size: 13px; letter-spacing: .02em; }
.translation { margin: 14px 0 0; color: #343f59; }
.support-row { display: flex; flex-wrap: wrap; gap: 9px; margin: 16px 0 0; }
.secondary-button, .primary-button, .quiet-button { border-radius: 10px; padding: 10px 15px; font-weight: 750; cursor: pointer; }
.primary-button { border: 1px solid var(--blue); background: var(--blue); color: white; }
.primary-button:hover { background: var(--blue-2); }
.secondary-button { border: 1px solid #b8c8ef; color: var(--blue); background: white; }
.quiet-button { border: 1px solid var(--line-dark); background: white; color: #515c74; }
.expansion-list { margin: 22px 0 0; display: grid; gap: 10px; }
.expansion-line { padding: 13px 15px; border-left: 3px solid #b8c8ef; background: #f8faff; }
.expansion-line strong { display: block; font: 500 18px Georgia, serif; }
.expansion-line span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
.production-box { margin-top: 20px; }
.production-box textarea { width: 100%; min-height: 110px; resize: vertical; border: 1px solid var(--line-dark); border-radius: 12px; padding: 14px; }
.production-lock { padding: 16px; border: 1px solid #f0d3a7; border-radius: 12px; background: #fff9ef; color: #775425; font-size: 13px; line-height: 1.5; }
.keyboard { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 5px; }
.keyboard button { min-width: 31px; height: 31px; border: 1px solid #d6def0; border-radius: 7px; background: #f4f7ff; color: #2048a8; cursor: pointer; }
.study-actions { margin-top: 25px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 12px; }

.rail-card { margin-bottom: 14px; padding: 17px; border: 1px solid var(--line); border-radius: 14px; background: white; }
.rail-card h3 { margin: 8px 0; font-size: 18px; }
.rail-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.progress-ring { width: 116px; height: 116px; margin: 14px auto; border-radius: 50%; display: grid; place-items: center; background: conic-gradient(var(--blue) var(--progress), #e7e9ee 0); position: relative; }
.progress-ring::after { content: ""; position: absolute; inset: 10px; background: white; border-radius: 50%; }
.progress-ring div { position: relative; z-index: 1; text-align: center; }
.progress-ring strong { display: block; font: 700 28px/1 Georgia, serif; }
.progress-ring span { color: var(--muted); font-size: 9px; }
.stat-pair { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--line); margin-top: 14px; padding-top: 14px; }
.stat-pair div { text-align: center; }
.stat-pair div + div { border-left: 1px solid var(--line); }
.stat-pair strong, .stat-pair span { display: block; }
.stat-pair strong { font: 700 18px Georgia, serif; }
.stat-pair span { color: var(--muted); font-size: 9px; }
.focus-list { margin: 12px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.focus-list li { padding: 8px 9px; border-radius: 8px; background: #f7f9fd; font-size: 11px; }
.gate-card { border-color: #bcd0ff; background: #f5f8ff; }
.gate-card strong { display: block; color: var(--blue); font-size: 12px; }
.gate-card p { margin-top: 6px; }

.exam-skills { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: 15px; background: white; overflow: hidden; }
.exam-skill { padding: 18px; border-right: 1px solid var(--line); }
.exam-skill:last-child { border-right: 0; }
.exam-skill b { display: block; margin-bottom: 8px; color: var(--blue); font: 700 24px Georgia, serif; }
.exam-skill strong, .exam-skill span { display: block; }
.exam-skill span { margin-top: 6px; color: var(--muted); font-size: 11px; }
.exam-table { margin-top: 24px; border: 1px solid var(--line); border-radius: 15px; background: white; overflow: hidden; }
.exam-row { display: grid; grid-template-columns: 1.6fr .8fr .7fr auto; gap: 14px; align-items: center; padding: 15px 18px; border-bottom: 1px solid var(--line); }
.exam-row:last-child { border-bottom: 0; }
.exam-row strong { font-size: 13px; }
.exam-row span { color: var(--muted); font-size: 11px; }
.threshold-note { margin-top: 20px; padding: 20px; border: 1px solid #bcd0ff; border-radius: 15px; background: #f5f8ff; display: grid; grid-template-columns: auto 1fr; gap: 15px; align-items: center; }
.threshold-note b { width: 52px; height: 52px; border: 3px solid var(--blue); border-radius: 50%; display: grid; place-items: center; color: var(--blue); }
.threshold-note p { margin: 4px 0 0; color: var(--muted); font-size: 12px; }

.method-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, .9fr); gap: 42px; align-items: center; padding: 34px 0 46px; }
.method-hero h1 { margin: 0 0 18px; font-size: clamp(40px, 5vw, 66px); font-weight: 500; line-height: 1; }
.method-hero p { color: var(--muted); line-height: 1.7; }
.method-visual { padding: 16px; border: 1px solid var(--line); border-radius: 20px; background: #fbfaf7; }
.method-visual img { display: block; width: 100%; height: auto; border-radius: 14px; }
.method-visual p { margin: 12px 10px 3px; font-size: 11px; }
.method-section { margin: 25px 0; padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.method-section h2 { margin: 0 0 8px; font-size: 28px; }
.method-section > p { color: var(--muted); line-height: 1.65; }
.method-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-top: 20px; }
.method-grid article { min-width: 0; overflow-wrap: anywhere; padding: 18px; border: 1px solid var(--line); border-radius: 13px; background: #fbfcff; }
.method-grid b { color: var(--blue); }
.method-grid h3 { margin: 12px 0 6px; font-size: 18px; }
.method-grid p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.layer-diagram { margin-top: 20px; display: grid; gap: 8px; }
.layer-diagram div { min-height: 52px; width: var(--w); padding: 10px 15px; border: 1px solid #b9caf6; border-radius: 10px; background: linear-gradient(90deg, #edf3ff, white); display: flex; align-items: center; gap: 14px; }
.layer-diagram b { min-width: 70px; }
.layer-diagram span { font-size: 12px; color: var(--muted); }
.empty-state { padding: 40px; border: 1px dashed var(--line-dark); border-radius: 16px; text-align: center; color: var(--muted); background: white; }
.toast { position: fixed; z-index: 80; left: 50%; bottom: 24px; transform: translateX(-50%); max-width: min(520px, calc(100vw - 30px)); padding: 13px 17px; border-radius: 10px; background: #11182c; color: white; box-shadow: 0 16px 45px rgba(0,0,0,.2); font-size: 13px; }
.rail-backdrop { position: fixed; inset: 74px 0 0; z-index: 35; background: rgba(10,19,41,.35); }

.chapter-tree { border-bottom: 1px solid var(--line); }
.chapter-tree summary { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; padding: 11px 8px; cursor: pointer; color: #24304d; font-size: 11px; }
.chapter-tree summary::marker { color: var(--blue); }
.chapter-tree summary span { color: var(--muted); }
.chapter-lesson-list { padding: 0 0 8px; }
.lesson-link { padding-left: 6px; }
.lesson-link small { white-space: normal; line-height: 1.35; }
.textbook-study { min-height: 560px; }
.lesson-map { margin-top: 20px; padding: clamp(20px, 3vw, 30px); border: 1px solid #d8e0f1; border-radius: 16px; background: linear-gradient(135deg, #f8faff, #fff); }
.lesson-map > div { display: grid; grid-template-columns: 90px 1fr; gap: 14px; align-items: baseline; }
.lesson-map span, .audio-task-steps h3 { color: #65728b; font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.lesson-map ol, .audio-task-steps ol { margin: 18px 0; padding-left: 22px; color: #35415a; line-height: 1.65; }
.lesson-map p { margin: 0; color: #35415a; line-height: 1.55; }
.audio-task-steps { margin-top: 18px; padding: 18px 20px; border-left: 4px solid var(--blue); border-radius: 0 12px 12px 0; background: #f7f9ff; }
.audio-task-steps h3 { margin: 0; }
.audio-task-steps ol { margin-bottom: 0; }
.chapter-practice { margin-top: 26px; border: 1px solid #cbd7f0; border-radius: 20px; background: #fff; box-shadow: var(--shadow); overflow: hidden; }
.chapter-practice-head { display: flex; justify-content: space-between; gap: 24px; padding: clamp(24px, 3.5vw, 38px); border-bottom: 1px solid #e4e8f1; background: linear-gradient(135deg, #f5f8ff, #fff); }
.chapter-practice-head h2 { margin: 8px 0 10px; font-size: clamp(24px, 3vw, 34px); }
.chapter-practice-head p { max-width: 720px; margin: 0; color: var(--muted); line-height: 1.6; }
.skill-ribbon { display: grid; align-content: start; grid-template-columns: repeat(2, minmax(94px, 1fr)); gap: 7px; min-width: 220px; }
.skill-ribbon span { padding: 9px 12px; border: 1px solid #d9e2f6; border-radius: 999px; background: #fff; color: #24499e; font-size: 11px; font-weight: 750; text-align: center; }
.chapter-pass-strip { margin: 26px clamp(24px, 3.5vw, 38px) 38px; }
.chapter-pass-strip .pass-tab span { top: 14px; }
.chapter-practice-body { padding: 0 clamp(24px, 3.5vw, 38px) clamp(24px, 3.5vw, 38px); }
.chapter-practice-body > h3 { margin: 9px 0 10px; font-size: clamp(22px, 2.6vw, 30px); }
.chapter-practice-body > p { color: var(--muted); line-height: 1.6; }
.chapter-practice.unavailable { padding: 28px; }
.lesson-mode-switch { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.chapter-check { margin-top: 20px; padding: 20px; border: 1px solid #dbe2f0; border-radius: 14px; background: #fafbfe; }
.chapter-check h4 { margin: 8px 0 16px; font-size: 20px; line-height: 1.4; }
.chapter-check-options { display: flex; flex-wrap: wrap; gap: 9px; }
.scenario-check-option.is-selected { border-color: var(--blue); background: var(--blue-soft); color: var(--blue); }
.practice-feedback { margin-top: 16px; padding: 13px 15px; border-radius: 10px; line-height: 1.5; }
.practice-feedback p { margin: 4px 0 0; }
.practice-feedback.is-correct { border: 1px solid #a5d9bf; background: #edfaf3; color: #17633e; }
.practice-feedback.is-incorrect { border: 1px solid #e7c498; background: #fff8ec; color: #7c4a14; }
.lesson-evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 22px 0; }
.lesson-evidence-grid div { padding: 16px; border: 1px solid var(--line); border-radius: 12px; background: #fafbfe; }
.lesson-evidence-grid b, .lesson-evidence-grid span { display: block; }
.lesson-evidence-grid b { color: var(--blue); font: 600 26px Georgia, serif; }
.lesson-evidence-grid span { margin-top: 5px; color: var(--muted); font-size: 10px; line-height: 1.35; }
.source-proof { margin-top: 18px; border-top: 1px solid var(--line); padding-top: 14px; }
.source-proof summary { cursor: pointer; color: var(--blue); font-weight: 700; font-size: 12px; }
.source-proof p { max-width: 78ch; color: var(--muted); font-size: 11px; line-height: 1.55; }
.source-proof small { color: #8790a5; }
.progression-ladder { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin: 20px 0 12px; }
.progression-ladder article { position: relative; min-width: 0; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fafbfe; }
.progression-ladder article:not(:last-child)::after { content: "→"; position: absolute; top: 50%; right: -9px; z-index: 2; width: 17px; height: 17px; border-radius: 50%; background: white; color: #8b96ad; font-size: 11px; line-height: 17px; text-align: center; }
.progression-ladder article.is-current { border-color: #9bb2ec; background: #eef3ff; }
.progression-ladder span { color: #77829a; font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.progression-ladder p { margin: 7px 0 0; color: #34415f; font-size: 11px; line-height: 1.45; }
.progression-ladder .is-current p { color: #173b9b; font-weight: 700; }
.progression-rule { margin: 0 0 18px; color: var(--muted); font-size: 10px; line-height: 1.5; }
.textbook-source-card { margin-top: 18px; border: 1px solid var(--line-dark); border-radius: 14px; overflow: hidden; background: white; }
.source-card-head { display: flex; justify-content: space-between; gap: 12px; padding: 10px 14px; background: #f5f7fc; color: #5b6680; font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; }
.progressive-layer-label { display: flex; justify-content: space-between; gap: 14px; align-items: baseline; padding: 11px 14px; border-bottom: 1px solid #dbe4fb; background: #eef3ff; }
.progressive-layer-label span { flex: none; color: var(--blue); font-size: 9px; font-weight: 850; text-transform: uppercase; letter-spacing: .06em; }
.progressive-layer-label strong { color: #405170; font-size: 10px; text-align: right; }
.greek-source-text { max-height: 420px; overflow: auto; padding: 20px; white-space: pre-wrap; color: #172a63; font: 500 18px/1.75 Georgia, serif; }
.word-gloss { display: inline; margin: 0; padding: 0 1px; border: 0; border-bottom: 1px dotted #8aa2df; background: transparent; color: inherit; font: inherit; cursor: help; border-radius: 3px; user-select: text; }
.word-gloss:hover, .word-gloss:focus-visible { background: #e8efff; border-bottom-color: var(--blue); }
.word-gloss.has-local-gloss { background: #f3f6ff; }
.phonetic-scaffold, .direct-translation { padding: 12px 18px; border-top: 1px solid var(--line); }
.phonetic-scaffold { background: #f4f7ff; }
.direct-translation { background: #f7fbf7; }
.phonetic-scaffold strong, .direct-translation strong { color: #455273; font-size: 10px; text-transform: uppercase; letter-spacing: .06em; }
.phonetic-scaffold p, .direct-translation p { margin: 5px 0 0; font-size: 14px; line-height: 1.55; }
.phonetic-scaffold p { color: #244ba9; }
.direct-translation p { color: #355f3e; }
.textbook-source-card > .reveal-source { margin: 18px; }
.context-translation { padding: 14px 18px; border-top: 1px solid var(--line); background: #fffdf7; }
.context-translation strong { color: #72511e; font-size: 11px; }
.context-translation p { margin: 5px 0 0; color: #6b624f; font-size: 11px; line-height: 1.5; }
.support-checks { display: grid; gap: 9px; margin-top: 18px; padding: 16px; border-radius: 12px; background: #f6f8fd; }
.support-checks label { font-size: 12px; color: #3e4962; }
.task-contract { margin: 0 0 24px; overflow: hidden; border: 1px solid #cad5f3; border-radius: 18px; background: #fff; box-shadow: 0 10px 28px rgba(35, 55, 110, .06); }
.task-contract-title { display: grid; gap: 7px; padding: 18px 20px; border-bottom: 1px solid #dce4f7; background: linear-gradient(135deg, #edf2ff, #f8faff); }
.task-contract-title span, .task-contract-grid article > span, .task-contract-result span, .guided-audio-support > div:first-child span { font-size: 10px; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; color: var(--blue); }
.task-contract-title strong { font-family: var(--serif); font-size: 20px; line-height: 1.25; color: #17203a; }
.task-contract-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 0; }
.task-contract-grid article { padding: 18px 20px; }
.task-contract-grid article + article { border-left: 1px solid #e2e7f2; }
.task-contract-grid ol, .task-contract-grid ul { display: grid; gap: 8px; margin: 10px 0 0; padding-left: 20px; }
.task-contract-grid li { padding-left: 3px; font-size: 13px; line-height: 1.55; color: #39445d; }
.task-contract-result { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid #e2e7f2; background: #fbfcff; }
.task-contract-result > div { padding: 15px 20px; }
.task-contract-result > div + div { border-left: 1px solid #e2e7f2; }
.task-contract-result p { margin: 6px 0 0; font-size: 12px; line-height: 1.5; color: #4d5870; }
.guided-audio-support { margin: 18px 0; padding: 18px; border: 1px solid #d8dfef; border-radius: 16px; background: #fbfcff; }
.guided-audio-support > div:first-child p { margin: 6px 0 0; color: var(--muted); font-size: 12px; }
.guided-audio-support-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 14px; }
.guided-audio-support-grid article { min-width: 0; padding: 13px; border: 1px solid #e1e6f2; border-radius: 12px; background: #fff; }
.guided-audio-support-grid article > div { font-family: var(--serif); font-size: 17px; line-height: 1.6; color: #253968; }
.guided-audio-support-grid small { display: block; margin-top: 8px; color: #64708a; line-height: 1.45; }
.guided-audio-support-grid p { margin: 6px 0 0; font-size: 12px; color: #38445f; }
.guided-audio-glosses { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.guided-audio-glosses > span { display: grid; gap: 4px; min-width: 120px; padding: 10px 12px; border: 1px solid #e1e6f2; border-radius: 10px; background: #fff; font-size: 11px; color: #59647b; }
.guided-audio-glosses b { font-family: var(--serif); font-size: 16px; color: #253968; }
.support-note { color: var(--muted); font-size: 11px; }
.lesson-route-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 14px; }

.lexicon-source-note { display: flex; gap: 12px; align-items: baseline; margin: 16px 0; padding: 12px 14px; border-left: 3px solid var(--blue); background: #f6f8ff; }
.lexicon-source-note strong { color: var(--blue); }
.lexicon-source-note span { color: var(--muted); font-size: 12px; }
.textbook-lexicon-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 18px 0; }
.textbook-lexicon-grid article { min-width: 0; padding: 14px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcff; }
.textbook-lexicon-grid article > div { color: #173b9b; font: 600 18px/1.45 Georgia, serif; }
.textbook-lexicon-grid p { margin: 7px 0 0; color: #47536e; font-size: 12px; line-height: 1.4; }
.textbook-lexicon-grid small { display: block; margin-top: 7px; color: #8992a4; font-size: 9px; }

.word-inspector { position: fixed; z-index: 90; right: 22px; bottom: 22px; width: min(390px, calc(100vw - 30px)); max-height: min(620px, calc(100dvh - 100px)); overflow: auto; overflow-wrap: anywhere; padding: 18px; border: 1px solid #b9c9ee; border-radius: 16px; background: white; box-shadow: 0 24px 70px rgba(19, 37, 83, .24); }
.word-inspector-head { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; }
.word-inspector-head > div > span, .word-inspector-head > div > strong { display: block; }
.word-inspector-head > div > span { color: var(--muted); font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
.word-inspector-head strong { margin-top: 4px; color: var(--blue); font: 600 27px/1.15 Georgia, serif; }
.word-inspector-close { width: 30px; height: 30px; border: 0; border-radius: 50%; background: #f0f3f9; color: #59657d; cursor: pointer; font-size: 20px; }
.word-inspector-meaning { margin-top: 14px; padding: 13px 14px; border-radius: 11px; background: #f6f8fd; }
.word-inspector-meaning strong, .word-inspector-meaning small { display: block; }
.word-inspector-meaning strong { font-size: 15px; line-height: 1.45; }
.word-inspector-meaning small { margin-top: 5px; color: var(--muted); }
.word-source { margin: 10px 0 0; color: var(--muted); font-size: 10px; }
.word-source a { color: var(--blue); }
.word-inspector-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.word-loading { display: flex; flex-direction: column; gap: 6px; }
.word-loading strong { color: var(--blue); font: 600 24px Georgia, serif; }
.word-loading span { color: var(--muted); font-size: 12px; }

.context-search { margin: 0 0 22px; padding: 18px; border: 1px solid var(--line); border-radius: 15px; background: white; }
.context-search label { display: block; margin-bottom: 8px; color: #47536d; font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.context-search > div { display: flex; gap: 8px; }
.context-search input { flex: 1; min-width: 0; border: 1px solid var(--line-dark); border-radius: 10px; padding: 10px 12px; font-size: 17px; }
.notebook-layout { display: grid; grid-template-columns: minmax(230px, .72fr) minmax(0, 1.5fr); gap: 20px; align-items: start; }
.notebook-list, .context-results { padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: white; }
.section-heading { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; padding: 2px 2px 13px; border-bottom: 1px solid var(--line); }
.section-heading span { font: 600 19px Georgia, serif; }
.section-heading small { color: var(--muted); font-size: 9px; text-align: right; }
.notebook-word { position: relative; display: grid; grid-template-columns: 1fr auto; border-bottom: 1px solid #edf0f5; }
.notebook-word.is-active { margin: 0 -8px; padding: 0 8px; background: #f4f7ff; }
.notebook-open-context { min-width: 0; padding: 13px 4px; border: 0; background: transparent; text-align: left; cursor: pointer; }
.notebook-open-context strong, .notebook-open-context span, .notebook-open-context small { display: block; }
.notebook-open-context strong { color: #173b9b; font: 600 18px Georgia, serif; }
.notebook-open-context span { margin-top: 4px; font-size: 11px; line-height: 1.35; }
.notebook-open-context small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.notebook-remove { align-self: center; width: 28px; height: 28px; border: 0; border-radius: 50%; background: transparent; color: #8a93a5; cursor: pointer; }
.notebook-remove:hover { background: #fff0f0; color: #a63838; }
.context-card { padding: 16px 2px; border-bottom: 1px solid #edf0f5; }
.context-card:last-child { border-bottom: 0; }
.context-card > div span, .context-card > div a { display: block; }
.context-card > div span { color: var(--muted); font-size: 9px; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
.context-card > div a { margin-top: 4px; color: var(--blue); font-weight: 750; text-decoration: none; }
.context-card > div a:hover { text-decoration: underline; }
.context-card p { margin: 11px 0 0; color: #24345d; font: 500 16px/1.7 Georgia, serif; }
.context-analysis { margin-top: 12px; padding-top: 11px; border-top: 1px solid var(--line); }
.context-analysis summary { color: var(--blue); cursor: pointer; font-size: 11px; font-weight: 800; }
.context-analysis ol { margin: 11px 0 0; padding-left: 21px; color: #46526c; font-size: 11px; line-height: 1.55; }
.context-analysis p { margin-top: 9px; color: var(--muted); font: 400 10px/1.5 "Segoe UI", sans-serif; }
.context-privacy-note { margin-top: 15px; color: var(--muted); font-size: 10px; line-height: 1.5; }

@media (max-width: 1180px) {
  .method-hero { grid-template-columns: 1fr; }
  .workspace { grid-template-columns: 268px minmax(0, 1fr); }
  .context-rail { display: none; }
  .topbar { grid-template-columns: 210px 1fr auto; }
  .brand span { margin-left: 32px; }
  .route-module { grid-template-columns: 34px 1fr 1fr; }
  .route-module small { display: none; }
}
@media (max-width: 860px) {
  .topbar { grid-template-columns: 1fr auto auto; height: 66px; backdrop-filter: none; }
  .main-nav { position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; height: 58px; background: white; border-top: 1px solid var(--line); gap: 0; }
  .nav-button { flex: 1 1 0; min-width: 0; padding: 0 2px; font-size: 10px; white-space: nowrap; }
  .nav-wide { display: none; }
  .nav-compact { display: inline; }
  .nav-button[data-view="insights"] { flex-grow: 1.16; }
  .nav-button::after { top: 0; bottom: auto; }
  .profile-control label { display: none; }
  .profile-control select { min-width: 120px; max-width: 150px; }
  .mobile-menu { display: inline-grid; place-items: center; }
  .workspace { display: block; min-height: calc(100vh - 124px); }
  .course-rail { position: fixed; top: 66px; bottom: 58px; left: 0; z-index: 45; width: min(290px, calc(100vw - 30px)); height: auto; transform: translateX(-105%); transition: none; box-shadow: 20px 0 45px rgba(18,29,62,.16); }
  .course-rail.is-open { transform: translateX(0); }
  .main { padding: 28px 20px 92px; }
  .exam-skills, .method-grid { grid-template-columns: 1fr 1fr; }
  .method-hero { grid-template-columns: 1fr; }
  .pass-tab span { display: none; }
  .notebook-layout { grid-template-columns: 1fr; }
  .task-contract-grid, .task-contract-result { grid-template-columns: 1fr; }
  .task-contract-grid article + article, .task-contract-result > div + div { border-left: 0; border-top: 1px solid #e2e7f2; }
  .guided-audio-support-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .topbar { padding: 0 12px; }
  .brand strong { font-size: 25px; }
  .brand span { display: none; }
  .profile-control select { width: 105px; min-width: 0; }
  .page-head { display: block; }
  .route-summary { margin-top: 16px; }
  .route-level-head { grid-template-columns: 58px 1fr; }
  .route-level-head > span { display: none; }
  .route-module { grid-template-columns: 28px 1fr; }
  .route-module p { grid-column: 2; }
  .progression-ladder { grid-template-columns: 1fr; }
  .progression-ladder article:not(:last-child)::after { content: "↓"; top: auto; right: 50%; bottom: -9px; }
  .exam-skills, .method-grid { grid-template-columns: 1fr; }
  .exam-skill { border-right: 0; border-bottom: 1px solid var(--line); }
  .exam-row { grid-template-columns: 1fr auto; }
  .exam-row span:nth-of-type(2) { display: none; }
  .method-section { padding: 20px; }
  .layer-diagram div { width: 100% !important; }
  .study-card { padding: 22px 18px; }
  .lesson-map > div { grid-template-columns: 1fr; gap: 5px; }
  .chapter-practice-head { display: block; }
  .skill-ribbon { margin-top: 18px; min-width: 0; }
  .chapter-practice-body, .chapter-practice-head { padding-inline: 18px; }
  .chapter-pass-strip { margin-inline: 18px; }
  .lesson-evidence-grid { grid-template-columns: 1fr; }
  .greek-source-text { padding: 15px; font-size: 16px; }
  .textbook-lexicon-grid { grid-template-columns: 1fr; }
  .word-inspector { right: 15px; bottom: 72px; }
  .context-search > div { align-items: stretch; }
}
/* Scope disclosures and source-specific reading support. */
.practice-navigation { margin: 1rem 0; border-top: 1px solid #ddd8cf; padding-top: 1rem; }
.practice-navigation > summary { cursor: pointer; padding: .6rem; font-weight: 650; }
.route-limit, .observation-note, .completion-accounting { padding: .8rem 1rem; border-left: 3px solid #5145e6; background: #f0efff; font-size: .92rem; line-height: 1.6; }
.is-machine-translation, .unprepared-word { background: #fff7e5; border: 1px dashed #b57820; padding: .8rem; }
.is-machine-translation > b { display: block; color: #855316; margin-bottom: .7rem; }
.review-static-list { display: grid; gap: .75rem; }
.review-static-list article { border-bottom: 1px solid #ddd8cf; padding: 1rem; cursor: default; }
.review-static-list article > span { margin-right: 1rem; }
.phonetic-pair { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1rem; }
.phonetic-pair > :not(.greek-source-text):not(.phonetic-scaffold) { grid-column: 1 / -1; }
.phonetic-pair .greek-source-text, .phonetic-pair .phonetic-scaffold { margin: 0; font-size: 1.2rem; line-height: 1.8; min-width: 0; }
.phonetic-pair .phonetic-scaffold small { display: block; font-size: .8rem; line-height: 1.5; }
.textbook-study, .task-contract, .task-contract-grid > article { overflow-wrap: anywhere; }

/* The learning surface is intentionally distinct from expandable editorial notes. */
.learner-heading h1 { font-size: clamp(28px, 3vw, 42px); }
.learner-study { padding: clamp(20px, 3vw, 34px); }
.learner-study h2 { font-size: clamp(24px, 2.4vw, 30px); line-height: 1.25; }
.learner-study .lesson-instruction { margin: 0 0 20px; max-width: 65ch; font-size: 15px; line-height: 1.65; color: var(--muted); }
.learner-reading { margin: 0 0 16px; background: #fafbff; border-color: #dee4f4; }
.learner-reading .greek-source-text { padding: 24px; font-size: clamp(22px, 2.3vw, 29px); line-height: 1.85; white-space: pre-line; }
.learner-reading.letter-reading .greek-source-text { font-size: clamp(24px, 2.6vw, 32px); }
.parallel-reader { background: #fff; }
.parallel-reader-head, .parallel-segment { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
.parallel-reader-head { border-bottom: 1px solid #d9deea; background: #f5f7fc; color: #526079; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.parallel-reader-head > * { padding: 12px 24px; }
.parallel-reader-head > :last-child, .parallel-russian { border-left: 1px solid #d9deea; }
.parallel-segment { border-bottom: 1px solid #e7eaf1; transition: background-color .16s ease, box-shadow .16s ease; }
.parallel-segment:last-child { border-bottom: 0; }
.parallel-segment .greek-source-text, .parallel-segment .parallel-russian { min-width: 0; margin: 0; padding: 20px 24px; }
.parallel-segment .greek-source-text { font-size: clamp(20px, 2vw, 26px); line-height: 1.75; }
.parallel-segment .parallel-russian { font-size: clamp(16px, 1.5vw, 19px); line-height: 1.75; color: #303747; white-space: pre-line; }
.parallel-segment.is-linked-highlight { background: #fff9df; box-shadow: inset 4px 0 #efb91c; }
.parallel-segment.is-linked-highlight .parallel-russian { background: #fff0a8; color: #16191f; }
.parallel-translation-note { border-top: 1px solid #e7eaf1; padding: 10px 24px; color: #766641; background: #fffaf0; font-size: 12px; line-height: 1.5; }
.translation-missing .parallel-russian { color: #875f1b; background: #fff9eb; }
.compact-parallel-reader .parallel-segment .greek-source-text, .compact-parallel-reader .parallel-segment .parallel-russian { padding: 18px 20px; }
.compact-parallel-reader .greek-large { margin: 0; }
.compact-parallel-reader .translation { margin: 0; }
.compact-parallel-reader .pronunciation { display: block; margin-top: 8px; }
.compact-parallel-reader > .support-row { padding: 0 20px 16px; }
.lesson-help { margin: 12px 0; border-top: 1px solid var(--line); padding-top: 12px; }
.lesson-help summary, .lesson-notes summary, .word-reference summary { cursor: pointer; color: var(--muted); font-size: 13px; line-height: 1.5; }
.lesson-help summary:hover, .lesson-notes summary:hover { color: var(--blue); }
.lesson-help p, .lesson-help li { font-size: 14px; line-height: 1.6; }
.lesson-help p { margin: 8px 0; }
.pronunciation-help p { color: #244ba9; font-size: 17px; }
.lesson-help ol { padding-left: 22px; }
.learner-study > .confirm-stage-evidence { margin: 14px 0; }
.lesson-notes { margin: 24px 0; padding: 14px 0; border-block: 1px solid var(--line); }
.lesson-notes > p, .lesson-notes small { font-size: 13px; line-height: 1.7; overflow-wrap: anywhere; }
.lesson-notes .task-contract { margin-top: 18px; }
.optional-recordings audio { display: block; width: 100%; max-width: 480px; }
.optional-recordings { margin-top: 16px; }
.course-starts { display: flex; flex-wrap: wrap; gap: 12px; margin-block: 22px 12px; }
.learner-study .textbook-lexicon-grid { margin-block: 16px; }
.learner-study .textbook-lexicon-grid article > p { margin-bottom: 10px; }
.learner-study .verified-audio-panel { padding: 14px; margin-top: 0; box-shadow: none; }
.learner-study .verified-audio-head small, .learner-study .verified-audio-head div > span { display: none; }
@media (max-width: 600px) {
  .learner-reading .greek-source-text { padding: 18px; }
  .parallel-reader-head { display: none; }
  .parallel-segment { grid-template-columns: minmax(0, 1fr); }
  .parallel-segment .greek-source-text, .parallel-segment .parallel-russian { padding: 16px 18px; }
  .parallel-segment .greek-source-text::before, .parallel-segment .parallel-russian::before { display: block; margin-bottom: 5px; color: #71809a; font-family: Arial, sans-serif; font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
  .parallel-segment .greek-source-text::before { content: "Ελληνικά"; }
  .parallel-segment .parallel-russian::before { content: "Русский"; }
  .parallel-segment .parallel-russian { border-left: 0; border-top: 1px dashed #d9deea; background: #f8f9fc; }
  .course-starts > button { width: 100%; }
  .learner-study .study-actions { flex-wrap: wrap; gap: 12px; }
  .learner-study .study-actions button { flex: 1; min-width: 110px; }
}
#examModuleResults { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
#examModuleResults h2 { flex-basis: 100%; }
@media (max-width: 600px) { .phonetic-pair { grid-template-columns: minmax(0,1fr); } }