:root {
  --ink: #18332f;
  --ink-2: #31504b;
  --muted: #75827f;
  --paper: #f6f4ed;
  --surface: #fffef9;
  --surface-2: #efeee6;
  --line: #dfddd3;
  --line-dark: #cbc9bd;
  --brand: #287d68;
  --brand-dark: #1d5f51;
  --brand-soft: #e1f1e9;
  --lime: #cddd78;
  --lime-soft: #eff4d4;
  --coral: #de785f;
  --coral-soft: #fae6df;
  --blue: #5e7f9d;
  --blue-soft: #e4edf4;
  --shadow: 0 16px 42px rgba(34, 52, 48, 0.09);
  --serif: Georgia, 'Times New Roman', 'Songti SC', serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font-family: var(--sans); -webkit-font-smoothing: antialiased; }
button, input, select { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.hidden { display: none !important; }

.app-shell { min-height: 100vh; }
.topbar { position: fixed; z-index: 50; inset: 0 0 auto 0; height: 72px; display: grid; grid-template-columns: 260px 1fr auto; align-items: center; gap: 24px; padding: 0 28px; background: rgba(255, 254, 249, 0.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(18px); }
.brand { display: flex; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; color: var(--surface); background: var(--ink); border-radius: 12px 12px 12px 4px; }
.brand-mark svg { width: 26px; height: 26px; stroke-width: 1.6; }
.brand > span:last-child { display: grid; gap: 1px; }
.brand strong { font-family: var(--serif); font-size: 20px; letter-spacing: -0.02em; }
.brand small { color: var(--muted); font-size: 10px; letter-spacing: 0.08em; }
.top-nav { justify-self: center; display: flex; height: 100%; gap: 4px; }
.top-nav-item { position: relative; display: flex; align-items: center; gap: 8px; padding: 0 16px; border: 0; background: transparent; color: var(--muted); font-size: 13px; font-weight: 650; cursor: pointer; }
.top-nav-item::after { content: ''; position: absolute; height: 2px; inset: auto 14px 0; background: var(--brand); transform: scaleX(0); transition: transform .2s ease; }
.top-nav-item:hover, .top-nav-item.active { color: var(--ink); }
.top-nav-item.active::after { transform: scaleX(1); }
.top-nav-item svg { width: 17px; height: 17px; }
.nav-count { min-width: 20px; height: 20px; display: grid; place-items: center; padding: 0 5px; color: var(--brand-dark); background: var(--brand-soft); border-radius: 10px; font-size: 10px; }
.top-actions { display: flex; align-items: center; gap: 16px; }
.streak { display: grid; grid-template-columns: auto auto; column-gap: 5px; align-items: center; }
.streak > span { grid-row: 1 / 3; color: var(--coral); font-size: 24px; transform: rotate(-20deg); }
.streak strong { line-height: 1; font-size: 14px; }
.streak small { color: var(--muted); font-size: 9px; }
.profile-button { width: 34px; height: 34px; border: 0; border-radius: 50%; color: var(--surface); background: var(--brand); font-weight: 700; cursor: pointer; }
.icon-button { display: grid; place-items: center; width: 36px; height: 36px; padding: 0; background: transparent; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.mobile-menu { display: none; }

.course-sidebar { position: fixed; z-index: 30; inset: 72px auto 0 0; width: 280px; padding: 34px 22px; background: #efeee7; border-right: 1px solid var(--line); overflow-y: auto; }
.sidebar-heading { display: flex; justify-content: space-between; align-items: end; padding: 0 6px; }
.eyebrow { display: block; margin-bottom: 5px; color: var(--brand); font-size: 10px; line-height: 1.2; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.sidebar-heading h2 { margin: 0; font-family: var(--serif); font-size: 22px; letter-spacing: -.025em; }
.course-progress { color: var(--muted); font-size: 11px; font-weight: 700; }
.sidebar-progress { height: 4px; margin: 17px 6px 24px; border-radius: 2px; background: #d9d8d0; overflow: hidden; }
.sidebar-progress span { display: block; width: 40%; height: 100%; background: var(--brand); }
.lesson-list { display: grid; gap: 7px; }
.lesson-item { position: relative; width: 100%; display: grid; grid-template-columns: 27px 1fr auto; align-items: center; gap: 9px; padding: 14px 12px; border: 1px solid transparent; border-radius: 13px; background: transparent; text-align: left; cursor: pointer; transition: .2s ease; }
.lesson-item:hover { background: rgba(255,255,255,.52); }
.lesson-item.active { background: var(--surface); border-color: var(--line); box-shadow: 0 7px 22px rgba(34,52,48,.06); }
.lesson-number { color: #a3aaa7; font-family: var(--serif); font-size: 12px; }
.lesson-item strong, .lesson-item small { display: block; }
.lesson-item strong { margin-bottom: 4px; font-family: var(--serif); font-size: 13px; line-height: 1.25; }
.lesson-item small { color: var(--muted); font-size: 10px; }
.lesson-item > svg { width: 18px; color: var(--brand); }
.lock-dot { width: 6px; height: 6px; background: #c5c7bf; border-radius: 50%; }
.now-playing { display: flex; align-items: end; gap: 2px; height: 13px; }
.now-playing i { display: block; width: 2px; background: var(--brand); border-radius: 2px; animation: bars .8s ease infinite alternate; }
.now-playing i:nth-child(1) { height: 7px; }.now-playing i:nth-child(2) { height: 13px; animation-delay: -.3s; }.now-playing i:nth-child(3) { height: 9px; animation-delay: -.5s; }
@keyframes bars { to { height: 4px; } }
.daily-goal { display: flex; align-items: center; gap: 12px; margin: 28px 6px 0; padding-top: 22px; border-top: 1px solid var(--line-dark); }
.goal-ring { position: relative; display: grid; place-items: center; width: 48px; height: 48px; flex: 0 0 auto; border-radius: 50%; background: conic-gradient(var(--brand) 0 72%, #d8dad3 72%); }
.goal-ring::before { content: ''; position: absolute; width: 38px; height: 38px; background: #efeee7; border-radius: 50%; }
.goal-ring span { position: relative; font-size: 10px; font-weight: 800; }
.daily-goal strong, .daily-goal small { display: block; }.daily-goal strong { font-size: 12px; }.daily-goal small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.sidebar-note { margin: 18px 6px 0; color: var(--muted); font-size: 9px; line-height: 1.6; }
.sidebar-import-link { display: flex; align-items: center; gap: 7px; margin: 18px 6px 0; padding: 10px 11px; border: 1px dashed var(--line-dark); border-radius: 9px; color: var(--brand-dark); font-size: 9px; font-weight: 750; text-decoration: none; transition: .2s; }.sidebar-import-link:hover { border-color: var(--brand); background: var(--brand-soft); }.sidebar-import-link svg { width: 14px; height: 14px; }

.workspace { min-height: 100vh; padding: 72px 0 0 280px; }
.app-view { display: none; min-height: calc(100vh - 72px); }
.app-view.active { display: block; }
.reader-view.active { display: grid; grid-template-columns: minmax(520px, 760px) 330px; justify-content: center; gap: 42px; padding: 48px 44px 100px; }
.reading-column { min-width: 0; }
.lesson-crumb { display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 10px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.lesson-crumb svg { width: 12px; height: 12px; }
.lesson-header { padding: 18px 0 26px; }
.lesson-kickers { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: var(--muted); font-size: 11px; }
.level-pill { padding: 5px 8px; color: var(--brand-dark); background: var(--brand-soft); border-radius: 6px; font-weight: 800; }
.lesson-header h1 { max-width: 650px; margin: 0; font-family: var(--serif); font-size: clamp(38px, 4vw, 58px); line-height: 1.02; font-weight: 500; letter-spacing: -.045em; }
.lesson-header p { margin: 15px 0 0; color: var(--ink-2); font-family: var(--serif); font-size: 17px; line-height: 1.5; }
.mode-switcher { width: max-content; display: flex; gap: 3px; padding: 4px; margin-bottom: 16px; border: 1px solid var(--line); border-radius: 12px; background: #ebeae3; }
.mode-button { display: flex; align-items: center; gap: 7px; padding: 9px 14px; border: 0; border-radius: 8px; color: var(--muted); background: transparent; font-size: 11px; font-weight: 750; cursor: pointer; }
.mode-button svg { width: 16px; height: 16px; }
.mode-button.active { color: var(--ink); background: var(--surface); box-shadow: 0 3px 12px rgba(34,52,48,.08); }

.audio-player { display: flex; gap: 16px; align-items: center; padding: 18px 20px; color: #f9fbf6; background: var(--ink); border-radius: 16px; box-shadow: var(--shadow); }
.play-button { display: grid; place-items: center; width: 48px; height: 48px; flex: 0 0 auto; border: 0; border-radius: 50%; color: var(--ink); background: var(--lime); cursor: pointer; transition: transform .15s ease; }
.play-button:hover { transform: scale(1.04); }.play-button svg { width: 21px; height: 21px; stroke-width: 2.2; }.play-button .pause-icon { display: none; }.play-button.playing .play-icon { display: none; }.play-button.playing .pause-icon { display: block; }
.audio-main { flex: 1; min-width: 0; }
.audio-main audio { display: none; }
.audio-title-row { display: flex; justify-content: space-between; align-items: center; gap: 14px; }
.audio-title-row strong { display: inline-block; margin-right: 9px; font-family: var(--serif); font-size: 13px; }.audio-title-row span { color: #9ab0aa; font-size: 9px; }
.audio-actions { display: flex; align-items: center; gap: 14px; }
.text-button { display: flex; align-items: center; gap: 5px; padding: 4px; border: 0; background: transparent; color: #afc0bb; font-size: 9px; cursor: pointer; }.text-button svg { width: 13px; }.text-button[aria-pressed="true"] { color: var(--lime); }
.speed-control, .voice-control { display: flex; align-items: center; gap: 5px; color: #afc0bb; font-size: 9px; }.speed-control select, .voice-control select { padding: 3px 4px; border: 1px solid #49625c; border-radius: 6px; color: #eef2ef; background: #28443e; font-size: 9px; outline: none; }.voice-control select { width: 116px; text-overflow: ellipsis; }
.audio-timeline { position: relative; width: 100%; height: 4px; display: block; margin: 14px 0 6px; padding: 0; border: 0; border-radius: 2px; background: #46605a; cursor: pointer; overflow: hidden; }
.timeline-progress { display: block; width: 0; height: 100%; background: var(--lime); transition: width .25s ease; }
.time-row { display: flex; justify-content: space-between; color: #839b95; font-size: 8px; }

.reader-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 48px; padding: 9px 2px 9px 13px; color: var(--muted); }
.reader-toolbar p { margin: 0; font-size: 10px; }.selection-spark { color: var(--brand); }
.reader-toolbar > div { display: flex; gap: 4px; }
.compact-button { display: flex; align-items: center; gap: 5px; padding: 7px 9px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-size: 9px; cursor: pointer; }.compact-button:hover, .compact-button[aria-pressed="true"] { color: var(--ink); background: var(--surface-2); }.compact-button svg { width: 14px; height: 14px; }
.article-card { padding: 42px 48px 32px; background: var(--surface); border: 1px solid var(--line); border-radius: 20px; box-shadow: 0 6px 30px rgba(34,52,48,.045); transition: .25s ease; }
.article-lead { margin-bottom: 30px; padding-left: 17px; border-left: 3px solid var(--lime); color: var(--ink-2); font-family: var(--serif); font-size: 17px; line-height: 1.72; }
.article-card > p:not(.paragraph-translation), #article-content > p:not(.paragraph-translation) { margin: 0 0 24px; color: #223c37; font-family: var(--serif); font-size: 19px; line-height: 1.92; }
.sentence { border-radius: 4px; transition: background .2s ease, color .2s ease; }
.sentence.audio-active { padding: .08em .16em; border-radius: 4px; background: var(--lime-soft); box-decoration-break: clone; -webkit-box-decoration-break: clone; }
.sentence.editorial-note { display: block; margin: -5px 0 18px; color: var(--muted); font-family: var(--sans); font-size: 10px; font-style: italic; line-height: 1.5; }
.lookup { display: inline; padding: 0; border: 0; border-bottom: 1px dotted #6b8c84; color: inherit; background: transparent; font: inherit; line-height: inherit; cursor: pointer; }
.lookup:hover, .lookup.active-word { color: var(--brand-dark); border-bottom-style: solid; background: var(--brand-soft); }
.paragraph-translation { display: none; margin: -13px 0 25px !important; padding: 11px 14px; border-radius: 9px; color: var(--muted); background: #f5f3eb; font-size: 11px !important; line-height: 1.65 !important; }
.show-translations .paragraph-translation { display: block; }
.article-card blockquote { position: relative; margin: 34px 0; padding: 27px 32px 23px; border: 0; border-radius: 13px; color: var(--surface); background: var(--brand); overflow: hidden; }
.article-card blockquote::after { content: '“'; position: absolute; top: -28px; right: 16px; color: rgba(255,255,255,.1); font-family: var(--serif); font-size: 110px; }
.article-card blockquote span { position: relative; z-index: 1; display: block; font-family: var(--serif); font-size: 18px; line-height: 1.55; }.article-card blockquote small { display: block; margin-top: 11px; color: #b9d8cf; font-size: 8px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.grammar-phrase { padding: 0; color: inherit; background: transparent; }
.grammar-mode .grammar-phrase { position: relative; padding: 2px 1px; background: linear-gradient(transparent 66%, #dce7a6 66%); cursor: help; }
.grammar-mode .grammar-phrase::after { content: attr(data-label); position: absolute; left: 0; bottom: calc(100% + 5px); padding: 3px 6px; border-radius: 4px; color: var(--surface); background: var(--ink); font-family: var(--sans); font-size: 8px; line-height: 1; white-space: nowrap; opacity: 0; transform: translateY(2px); transition: .15s; pointer-events: none; }.grammar-mode .grammar-phrase:hover::after { opacity: 1; transform: translateY(0); }
.listen-mode .article-card > p:not(.paragraph-translation), .listen-mode #article-content > p:not(.paragraph-translation) { color: transparent; text-shadow: 0 0 7px rgba(24,51,47,.32); user-select: none; }.listen-mode .sentence.audio-active { color: var(--ink); text-shadow: none; user-select: text; }.listen-mode .lookup { color: inherit; border-color: transparent; }
.article-source { display: flex; align-items: center; gap: 10px; margin-top: 36px; padding-top: 23px; border-top: 1px solid var(--line); }
.source-logo { padding: 5px 6px; color: white; background: #bb2b2b; font-size: 8px; font-weight: 900; letter-spacing: .06em; }
.article-source strong, .article-source small { display: block; }.article-source strong { font-size: 10px; }.article-source small { margin-top: 2px; color: var(--muted); font-size: 8px; }.article-source a { margin-left: auto; color: var(--brand-dark); font-size: 9px; font-weight: 700; text-decoration: none; }
.complete-lesson-button { width: 100%; display: flex; justify-content: center; align-items: center; gap: 11px; margin-top: 18px; padding: 15px; border: 1px solid var(--line); border-radius: 13px; background: transparent; font-size: 11px; font-weight: 750; cursor: pointer; transition: .2s; }.complete-lesson-button:hover { border-color: var(--brand); background: var(--brand-soft); }.complete-lesson-button > span { width: 23px; height: 23px; display: grid; place-items: center; border-radius: 50%; color: var(--surface); background: var(--brand); }.complete-lesson-button svg { width: 15px; height: 15px; }.complete-lesson-button > svg { color: var(--muted); }

.inspector { position: sticky; top: 104px; align-self: start; max-height: calc(100vh - 130px); overflow-y: auto; padding: 23px; background: var(--surface); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow); scrollbar-width: thin; }
.inspector-handle { display: none; }
.inspector-header { display: flex; justify-content: space-between; align-items: start; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.inspector-header strong { font-family: var(--serif); font-size: 18px; }.close-inspector { display: none; }
.assistant-intro { padding: 23px 2px 4px; }.assistant-symbol { width: 48px; height: 48px; display: grid; place-items: center; margin-bottom: 16px; border-radius: 15px 15px 15px 4px; color: var(--brand-dark); background: var(--brand-soft); font-size: 19px; }.assistant-intro h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 20px; font-weight: 500; }.assistant-intro p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }.assistant-tips { display: grid; gap: 8px; margin-top: 20px; }.assistant-tips span { padding: 10px 11px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink-2); font-size: 10px; }.assistant-tips b { color: var(--brand); }
.word-heading { padding: 20px 0 14px; }.word-heading-row { display: flex; justify-content: space-between; gap: 12px; align-items: start; }.word-heading h2 { margin: 0; font-family: var(--serif); font-size: 30px; font-weight: 500; letter-spacing: -.025em; }.word-heading h2 small { display: inline-block; margin-left: 7px; color: var(--muted); font-family: var(--sans); font-size: 10px; font-weight: 600; }.pronunciation { display: flex; align-items: center; gap: 7px; margin-top: 6px; color: var(--muted); font-family: var(--serif); font-size: 11px; }.pronunciation button { display: grid; place-items: center; width: 25px; height: 25px; padding: 0; border: 0; border-radius: 50%; color: var(--brand-dark); background: var(--brand-soft); cursor: pointer; }.pronunciation svg { width: 13px; height: 13px; }.save-word-button { display: flex; align-items: center; gap: 5px; padding: 7px 9px; border: 1px solid var(--brand); border-radius: 8px; color: var(--brand-dark); background: transparent; font-size: 9px; font-weight: 800; cursor: pointer; }.save-word-button.saved { border-color: var(--line); color: var(--muted); background: var(--surface-2); }.save-word-button svg { width: 13px; height: 13px; }
.meaning-block { padding: 15px 0; border-top: 1px solid var(--line); }.meaning-block > span, .analysis-block > span { display: block; margin-bottom: 7px; color: var(--muted); font-size: 8px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }.meaning-block strong { display: block; font-family: var(--serif); font-size: 17px; line-height: 1.45; }.meaning-block p { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.6; }
.context-example { margin: 2px 0 16px; padding: 12px 14px; border-left: 2px solid var(--lime); border-radius: 0 9px 9px 0; background: var(--lime-soft); font-family: var(--serif); font-size: 12px; line-height: 1.6; }.context-example em { color: var(--brand-dark); font-style: normal; font-weight: 700; }
.analysis-block { padding: 14px 0; border-top: 1px solid var(--line); }.analysis-block p { margin: 0; color: var(--ink-2); font-size: 10px; line-height: 1.7; }.word-parts { display: flex; align-items: center; gap: 5px; margin-top: 9px; }.word-parts i { padding: 5px 7px; border-radius: 5px; color: var(--brand-dark); background: var(--brand-soft); font-style: normal; font-size: 9px; }.word-parts b { color: var(--muted); font-size: 9px; }
.collocations { display: flex; flex-wrap: wrap; gap: 6px; }.collocations span { padding: 6px 8px; border-radius: 6px; color: var(--ink-2); background: var(--surface-2); font-size: 9px; }
.sentence-analysis { padding: 20px 0 4px; }.selected-quote { margin: 0 0 17px; padding: 13px; border-radius: 9px; background: var(--surface-2); font-family: var(--serif); font-size: 12px; line-height: 1.65; }.sentence-translation { margin: 0 0 18px; font-family: var(--serif); font-size: 16px; line-height: 1.55; } .translation-badge { display: inline-block; margin-left: 8px; padding: 2px 7px; border-radius: 999px; background: var(--brand-soft); color: var(--brand-dark); font-family: var(--sans); font-size: 9px; font-weight: 700; letter-spacing: .04em; vertical-align: middle; }.grammar-map { display: grid; gap: 7px; margin-top: 10px; }.grammar-map div { padding: 9px 10px; border: 1px solid var(--line); border-radius: 8px; }.grammar-map strong { display: block; margin-bottom: 3px; color: var(--brand-dark); font-size: 9px; }.grammar-map p { margin: 0; color: var(--muted); font-size: 9px; line-height: 1.5; }

.selection-menu { position: absolute; z-index: 100; display: none; padding: 5px; border: 1px solid #35524c; border-radius: 10px; color: white; background: var(--ink); box-shadow: 0 12px 30px rgba(18,34,31,.24); transform: translate(-50%, -100%); }.selection-menu.visible { display: flex; }.selection-menu::after { content: ''; position: absolute; left: 50%; bottom: -5px; width: 9px; height: 9px; background: var(--ink); border-right: 1px solid #35524c; border-bottom: 1px solid #35524c; transform: translateX(-50%) rotate(45deg); }.selection-menu button { display: flex; align-items: center; gap: 5px; padding: 7px 8px; border: 0; border-radius: 6px; color: #d7e2de; background: transparent; font-size: 9px; cursor: pointer; }.selection-menu button:hover { color: white; background: #2c4942; }.selection-menu button span { color: var(--lime); }
.toast { position: fixed; z-index: 120; left: 50%; bottom: 30px; display: flex; align-items: center; gap: 9px; min-width: 220px; padding: 12px 15px; border: 1px solid #3c5b54; border-radius: 11px; color: white; background: var(--ink); box-shadow: var(--shadow); opacity: 0; transform: translate(-50%, 20px); transition: .25s; pointer-events: none; }.toast.visible { opacity: 1; transform: translate(-50%, 0); }.toast > span { width: 20px; height: 20px; display: grid; place-items: center; border-radius: 50%; color: var(--ink); background: var(--lime); font-size: 10px; font-weight: 900; }.toast p { margin: 0; font-size: 10px; }

.page-container { max-width: 1040px; margin: 0 auto; padding: 58px 52px 100px; }.page-container.narrow { max-width: 900px; }
.page-header { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 34px; }.page-header h1, .review-heading h1 { margin: 0; font-family: var(--serif); font-size: 43px; font-weight: 500; letter-spacing: -.035em; }.page-header p, .review-heading p { margin: 10px 0 0; color: var(--muted); font-size: 12px; }
.primary-button { display: flex; align-items: center; gap: 8px; padding: 12px 15px; border: 0; border-radius: 10px; color: white; background: var(--brand); font-size: 10px; font-weight: 750; cursor: pointer; box-shadow: 0 8px 20px rgba(40,125,104,.18); }.primary-button:hover { background: var(--brand-dark); }.primary-button svg { width: 16px; }
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); margin-bottom: 25px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); }.stats-row > div { padding: 20px 24px; border-right: 1px solid var(--line); }.stats-row > div:last-child { border-right: 0; }.stats-row span, .stats-row small { display: block; color: var(--muted); font-size: 9px; }.stats-row strong { display: inline-block; margin: 6px 5px 0 0; font-family: var(--serif); font-size: 30px; font-weight: 500; }
.library-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 15px; }.search-field { display: flex; align-items: center; gap: 8px; width: min(320px, 100%); padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--surface); }.search-field svg { width: 15px; color: var(--muted); }.search-field input { width: 100%; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 10px; }.filter-chips { display: flex; gap: 5px; }.filter-chip { padding: 7px 10px; border: 1px solid transparent; border-radius: 8px; color: var(--muted); background: transparent; font-size: 9px; cursor: pointer; }.filter-chip.active { border-color: var(--line); color: var(--ink); background: var(--surface); }
.word-table { border: 1px solid var(--line); border-radius: 14px; background: var(--surface); overflow: hidden; }.word-row { display: grid; grid-template-columns: 1.2fr .85fr 1.8fr auto; align-items: center; gap: 20px; padding: 18px 21px; border-bottom: 1px solid var(--line); }.word-row:last-child { border-bottom: 0; }.word-cell strong { display: block; font-family: var(--serif); font-size: 18px; font-weight: 500; }.word-cell small { display: block; margin-top: 4px; color: var(--muted); font-size: 9px; }.meaning-cell strong { display: block; font-size: 11px; }.context-cell { color: var(--muted); font-family: var(--serif); font-size: 10px; line-height: 1.5; }.context-cell em { color: var(--brand-dark); font-style: normal; }.status-pill { display: inline-flex; padding: 5px 7px; border-radius: 6px; color: var(--brand-dark); background: var(--brand-soft); font-size: 8px; font-weight: 800; }.row-actions { display: flex; align-items: center; gap: 5px; }.row-actions button { display: grid; place-items: center; width: 28px; height: 28px; border: 0; border-radius: 7px; color: var(--muted); background: transparent; cursor: pointer; }.row-actions button:hover { color: var(--ink); background: var(--surface-2); }.row-actions svg { width: 14px; height: 14px; }.empty-library { padding: 70px 24px; text-align: center; color: var(--muted); font-size: 11px; }

.review-container { width: min(650px, calc(100% - 48px)); margin: 0 auto; padding: 62px 0 100px; }.review-heading { text-align: center; }.review-heading p { max-width: 500px; margin-inline: auto; line-height: 1.6; }.review-progress { height: 4px; margin: 27px 0 20px; border-radius: 3px; background: #deddd5; overflow: hidden; }.review-progress span { display: block; width: 0; height: 100%; background: var(--brand); transition: width .3s; }.flashcard { position: relative; min-height: 430px; display: flex; flex-direction: column; align-items: center; padding: 42px 50px 34px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); text-align: center; }.card-label { color: var(--muted); font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }.card-audio { position: absolute; top: 24px; right: 24px; display: grid; place-items: center; width: 34px; height: 34px; border: 0; border-radius: 50%; color: var(--brand-dark); background: var(--brand-soft); cursor: pointer; }.card-audio svg { width: 17px; }.flashcard-front { margin: auto 0 25px; }.flashcard-front h2 { margin: 0 0 13px; font-family: var(--serif); font-size: 44px; font-weight: 500; }.flashcard-front p { max-width: 450px; margin: 0; color: var(--ink-2); font-family: var(--serif); font-size: 16px; line-height: 1.7; }.flashcard-front em { color: var(--brand-dark); font-style: normal; font-weight: 700; }.flashcard-answer { width: 100%; margin: -10px 0 18px; padding: 14px; border-radius: 10px; background: var(--lime-soft); }.flashcard-answer strong { display: block; font-family: var(--serif); font-size: 20px; }.flashcard-answer small { display: block; margin-top: 5px; color: var(--muted); font-size: 10px; }.reveal-button { width: 100%; margin-top: auto; padding: 13px; border: 0; border-radius: 10px; color: white; background: var(--ink); font-size: 11px; font-weight: 700; cursor: pointer; }.reveal-button kbd { margin-left: 7px; padding: 2px 5px; border: 1px solid #557069; border-radius: 4px; color: #b3c5c0; background: #28453e; font-family: var(--sans); font-size: 8px; }.rating-row { width: 100%; display: grid; grid-template-columns: repeat(4, 1fr); gap: 7px; margin-top: auto; }.rating-row button { padding: 10px 4px; border: 1px solid var(--line); border-radius: 9px; background: transparent; font-size: 9px; cursor: pointer; }.rating-row button:hover { border-color: var(--brand); background: var(--brand-soft); }.rating-row button span { display: grid; place-items: center; width: 19px; height: 19px; margin: 0 auto 5px; border-radius: 50%; background: var(--surface-2); font-size: 8px; }.rating-row small { display: block; margin-top: 3px; color: var(--muted); font-size: 7px; }

.progress-hero { display: grid; grid-template-columns: .85fr 1.5fr; gap: 40px; align-items: end; margin-bottom: 20px; padding: 28px 31px; border: 1px solid var(--line); border-radius: 17px; color: var(--surface); background: var(--ink); }.progress-hero > div:first-child > span { color: #9db1ac; font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }.progress-hero strong { display: block; margin-top: 9px; font-family: var(--serif); font-size: 47px; font-weight: 500; }.progress-hero strong small { margin-left: 4px; color: #9db1ac; font-family: var(--sans); font-size: 11px; }.progress-hero p { margin: 3px 0 0; color: var(--lime); font-size: 9px; }.week-bars { height: 100px; display: flex; align-items: end; gap: 13px; }.week-bars i { position: relative; flex: 1; height: var(--bar); min-height: 6px; border-radius: 4px 4px 2px 2px; background: #506963; }.week-bars i.today { background: var(--lime); }.week-bars span { position: absolute; top: calc(100% + 9px); left: 50%; color: #91a6a0; font-size: 8px; font-style: normal; transform: translateX(-50%); }.skill-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 11px; }.skill-grid article { display: grid; grid-template-columns: auto 1fr auto; align-items: center; column-gap: 10px; padding: 18px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }.skill-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px; font-family: var(--serif); font-size: 12px; }.skill-icon.listening { color: var(--blue); background: var(--blue-soft); }.skill-icon.vocabulary { color: var(--brand); background: var(--brand-soft); }.skill-icon.grammar { color: var(--coral); background: var(--coral-soft); }.skill-grid article strong, .skill-grid article small { display: block; }.skill-grid article strong { font-size: 10px; }.skill-grid article small { margin-top: 4px; color: var(--muted); font-size: 8px; }.skill-grid article b { font-family: var(--serif); font-size: 15px; }.skill-grid article > i { grid-column: 1 / 4; height: 3px; margin-top: 13px; border-radius: 2px; background: var(--surface-2); overflow: hidden; }.skill-grid article > i span { display: block; height: 100%; background: var(--brand); }.insight-card { display: grid; grid-template-columns: auto 1fr auto; gap: 13px; align-items: center; margin-top: 13px; padding: 19px 21px; border: 1px solid #dbe3b4; border-radius: 13px; background: var(--lime-soft); }.insight-card > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px; color: var(--brand-dark); background: rgba(255,255,255,.6); }.insight-card strong { font-size: 10px; }.insight-card p { margin: 5px 0 0; color: var(--ink-2); font-size: 9px; line-height: 1.55; }.insight-card button { border: 0; color: var(--brand-dark); background: transparent; font-size: 9px; font-weight: 800; cursor: pointer; }
.mobile-nav { display: none; }

body.focus-mode .course-sidebar, body.focus-mode .inspector { display: none; }
body.focus-mode .workspace { padding-left: 0; }
body.focus-mode .reader-view.active { grid-template-columns: minmax(520px, 780px); }

@media (max-width: 1240px) {
  .reader-view.active { grid-template-columns: minmax(500px, 720px) 290px; gap: 24px; padding-inline: 28px; }
  .article-card { padding-inline: 38px; }
  .topbar { grid-template-columns: 230px 1fr auto; padding-inline: 22px; }.top-nav-item { padding-inline: 10px; }
}

@media (max-width: 1050px) {
  .topbar { grid-template-columns: 210px 1fr auto; }.top-nav-item { font-size: 0; }.top-nav-item svg { width: 19px; height: 19px; }.nav-count { position: absolute; top: 15px; right: 1px; font-size: 8px; }
  .course-sidebar { width: 245px; }.workspace { padding-left: 245px; }.reader-view.active { grid-template-columns: minmax(0, 700px); }
  .inspector { position: fixed; z-index: 80; right: 18px; bottom: 18px; top: auto; width: min(360px, calc(100% - 36px)); max-height: 74vh; transform: translateY(calc(100% + 30px)); transition: transform .25s ease; }.inspector.open { transform: translateY(0); }.inspector-handle { display: block; width: 36px; height: 3px; margin: -12px auto 16px; border-radius: 2px; background: var(--line-dark); }.close-inspector { display: grid; }
  .skill-grid { grid-template-columns: 1fr; }.skill-grid article > i { grid-column: 1 / 4; }
}

@media (max-width: 760px) {
  body { padding-bottom: 64px; }
  .topbar { height: 62px; grid-template-columns: auto 1fr auto; padding: 0 15px; gap: 10px; }.mobile-menu { display: grid; }.brand { justify-self: start; }.brand-mark { width: 32px; height: 32px; border-radius: 10px 10px 10px 3px; }.brand-mark svg { width: 21px; }.brand small { display: none; }.brand strong { font-size: 18px; }.top-nav, .streak { display: none; }.profile-button { width: 31px; height: 31px; }
  .course-sidebar { z-index: 70; inset: 62px auto 0 0; width: min(290px, 86vw); transform: translateX(-105%); transition: transform .25s ease; box-shadow: var(--shadow); }.course-sidebar.open { transform: translateX(0); }
  .workspace { padding: 62px 0 0; }.app-view { min-height: calc(100vh - 62px); }
  .reader-view.active { display: block; padding: 26px 16px 68px; }.lesson-header { padding-bottom: 20px; }.lesson-header h1 { font-size: 38px; }.lesson-header p { font-size: 15px; }.mode-switcher { width: 100%; }.mode-button { flex: 1; justify-content: center; }
  .audio-player { padding: 15px; border-radius: 14px; }.play-button { width: 42px; height: 42px; }.audio-title-row { align-items: start; flex-wrap: wrap; }.audio-title-row > div:first-child { width: 100%; }.audio-title-row > div:first-child span { display: inline-block; margin-left: 6px; }.audio-actions { width: 100%; justify-content: flex-end; gap: 9px; }.text-button { font-size: 0; }.speed-control, .voice-control { font-size: 0; }.voice-control select { width: 86px; }
  .reader-toolbar { align-items: start; }.reader-toolbar p { max-width: 150px; line-height: 1.5; }.compact-button { font-size: 0; }.compact-button svg { width: 17px; height: 17px; }
  .article-card { padding: 30px 23px 25px; border-radius: 16px; }.article-lead { font-size: 15px; }.article-card > p:not(.paragraph-translation), #article-content > p:not(.paragraph-translation) { font-size: 17px; line-height: 1.85; }.article-card blockquote { margin-inline: -7px; padding: 23px; }.article-source { flex-wrap: wrap; }.article-source a { width: 100%; margin: 4px 0 0 36px; }
  .page-container { padding: 36px 17px 80px; }.page-header { align-items: start; }.page-header h1, .review-heading h1 { font-size: 35px; }.page-header p { line-height: 1.5; }.primary-button { font-size: 0; padding: 11px; }.primary-button svg { width: 18px; }
  .stats-row > div { padding: 15px; }.stats-row strong { font-size: 24px; }.library-toolbar { align-items: stretch; flex-direction: column; }.search-field { width: 100%; }.filter-chips { overflow-x: auto; }.word-row { grid-template-columns: 1fr auto; gap: 10px; padding: 16px; }.meaning-cell, .context-cell { grid-column: 1 / 2; }.context-cell { display: none; }.row-actions { grid-column: 2; grid-row: 1 / 3; }.status-pill { width: max-content; }
  .review-container { width: calc(100% - 32px); padding-top: 38px; }.flashcard { min-height: 440px; padding: 38px 21px 24px; }.flashcard-front h2 { font-size: 38px; }.rating-row { grid-template-columns: repeat(2, 1fr); }
  .progress-hero { grid-template-columns: 1fr; gap: 25px; }.week-bars { height: 80px; margin-bottom: 15px; }.insight-card { grid-template-columns: auto 1fr; }.insight-card button { grid-column: 2; justify-self: start; padding: 0; }
  .mobile-nav { position: fixed; z-index: 60; inset: auto 0 0; height: 61px; display: grid; grid-template-columns: repeat(4, 1fr); background: rgba(255,254,249,.96); border-top: 1px solid var(--line); backdrop-filter: blur(16px); }.mobile-nav button { display: grid; place-items: center; align-content: center; gap: 3px; border: 0; color: var(--muted); background: transparent; font-size: 8px; }.mobile-nav button.active { color: var(--brand-dark); }.mobile-nav svg { width: 18px; height: 18px; }
  .toast { bottom: 78px; }
  body.focus-mode .workspace { padding-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
.audio-lead-in-row { display: flex; align-items: center; gap: 6px; margin-top: 12px; color: #afc0bb; font-size: 9px; }.audio-lead-in-row .lead-in-label { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid #49625c; border-radius: 999px; color: #d7e2de; background: #1f3a35; font-size: 9px; }.audio-lead-in-row input { width: 60px; padding: 2px 4px; border: 0; background: transparent; color: var(--lime); font-family: var(--sans); font-size: 9px; outline: none; }.micro-button { display: inline-flex; align-items: center; gap: 4px; padding: 5px 8px; border: 1px solid #49625c; border-radius: 999px; color: #d7e2de; background: #1f3a35; font-size: 9px; font-weight: 700; cursor: pointer; }.micro-button:hover { color: var(--lime); border-color: var(--lime); }.micro-button.primary { color: var(--ink); background: var(--lime); border-color: var(--lime); }
@media (max-width: 760px) { .audio-lead-in-row { flex-wrap: wrap; } }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }
.lesson-list-empty { margin: 0; padding: 18px 12px; color: var(--muted); font-size: 12px; text-align: center; border: 1px dashed var(--line); border-radius: 13px; }
.article-empty { color: var(--muted); font-size: 14px; padding: 40px 0; text-align: center; }