:root {
  color-scheme: light;
  --paper: #f7f5ee;
  --surface: #fffefa;
  --surface-soft: #f0eee5;
  --ink: #1d3034;
  --muted: #667579;
  --line: #e4e1d5;
  --brand: #0f6d67;
  --brand-dark: #0b5752;
  --brand-soft: #e2f0ec;
  --amber: #c9812b;
  --amber-soft: #fbf0dc;
  --rose: #a24d4a;
  --shadow: 0 12px 32px rgba(29, 48, 52, .07);
  font-family: Tahoma, Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); font-family: Tahoma, Arial, sans-serif; line-height: 1.65; }
button, input, select { font: inherit; }
button { cursor: pointer; }
a { color: var(--brand-dark); }
.site-shell { width: min(1120px, calc(100% - 36px)); margin: 0 auto; }
.site-header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; gap: 11px; align-items: center; text-decoration: none; color: inherit; flex: 0 0 auto; }
.brand-mark { width: 46px; height: 42px; position: relative; display: grid; place-items: center; background: var(--brand); color: white; border-radius: 14px 14px 8px 8px; box-shadow: 0 5px 14px rgba(15,109,103,.2); }
.brand-book { position: absolute; bottom: 3px; width: 30px; height: 24px; fill: none; stroke: white; stroke-width: 1.5; opacity: .42; }
.brand-a { position: relative; font: 700 19px Georgia, serif; }
.brand-copy { display: grid; line-height: 1.35; }
.brand-copy strong { font-size: 15px; }
.brand-copy small { color: var(--muted); font-size: 11px; }
.main-nav { display: flex; align-items: center; gap: 3px; overflow-x: auto; scrollbar-width: thin; }
.nav-link { flex: 0 0 auto; border: 0; color: var(--muted); background: transparent; padding: 10px 12px; border-radius: 10px; font-size: 13px; transition: background .18s ease, color .18s ease; }
.nav-link:hover, .nav-link.is-current { color: var(--brand-dark); background: var(--brand-soft); }
.nav-link:focus-visible, button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible { outline: 3px solid rgba(201,129,43,.55); outline-offset: 2px; }
.screen { display: none; padding: 30px 0 52px; min-height: 65vh; }
.screen.is-active { display: block; animation: appear .24s ease both; }
@keyframes appear { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
.hero { display: grid; grid-template-columns: 1fr 290px; gap: 34px; align-items: center; padding: 52px 42px; background: var(--surface); border: 1px solid var(--line); border-radius: 26px; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 230px; height: 230px; border-radius: 50%; background: var(--brand-soft); opacity: .52; inset: auto -130px -150px auto; }
.hero-copy, .hero-note { position: relative; z-index: 1; }
.eyebrow { color: var(--brand); font-size: 12px; font-weight: 700; letter-spacing: .01em; margin: 0 0 9px; }
.eyebrow-dot { width: 7px; height: 7px; display: inline-block; background: var(--amber); border-radius: 50%; margin-left: 5px; }
.hero h1 { font-size: clamp(31px, 5vw, 50px); line-height: 1.25; letter-spacing: -.035em; margin: 0; }
.hero h1 span { color: var(--brand); }
.hero-text { color: var(--muted); max-width: 610px; margin: 16px 0 24px; font-size: 16px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.button { border: 1px solid transparent; border-radius: 11px; padding: 11px 17px; font-size: 14px; font-weight: 700; transition: background .16s ease, transform .16s ease, box-shadow .16s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { color: white; background: var(--brand); box-shadow: 0 5px 14px rgba(15,109,103,.17); }
.button-primary:hover { background: var(--brand-dark); }
.button-quiet { background: transparent; color: var(--ink); border-color: var(--line); }
.button-quiet:hover { background: var(--surface-soft); }
.hero-note { background: var(--brand-soft); border-radius: 20px; padding: 22px; min-height: 195px; display: flex; flex-direction: column; justify-content: center; }
.note-icon { color: var(--brand); background: white; border-radius: 12px; width: 47px; height: 42px; display: grid; place-items: center; font: 700 14px Arial,sans-serif; direction: ltr; }
.note-label { color: var(--brand-dark); font-size: 12px; margin: 12px 0 2px; }
.note-title { font-size: 19px; line-height: 1.55; font-weight: 700; margin: 0; }
.note-copy { color: var(--muted); font-size: 12px; margin: 8px 0 0; }
.stats-strip { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; padding: 20px 5px 26px; }
.stat-item { display: flex; flex-direction: column; align-items: center; border-left: 1px solid var(--line); }
.stat-item:last-child { border-left: 0; }
.stat-item strong { font: 700 24px/1.3 Arial,Tahoma,sans-serif; color: var(--brand-dark); direction: ltr; }
.stat-item span { color: var(--muted); font-size: 12px; }
.home-block { margin-top: 14px; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 14px; }
.section-heading h2, .page-heading h1 { margin: 0; font-size: 25px; line-height: 1.35; }
.section-heading .eyebrow { margin-bottom: 2px; }
.text-button, .footer-link { padding: 6px 0; border: 0; background: transparent; color: var(--brand-dark); font-weight: 700; font-size: 13px; }
.path-preview { position: relative; display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.path-mini { display: flex; gap: 13px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 15px; }
.path-number { flex: 0 0 37px; height: 37px; border-radius: 12px; background: var(--amber-soft); display: grid; place-items: center; color: #89531e; font-weight: 700; direction: ltr; }
.path-mini strong { display: block; font-size: 13px; }
.path-mini small { color: var(--muted); font-size: 11px; }
.unit-preview { display: grid; grid-template-columns: repeat(4,1fr); gap: 11px; }
.unit-mini { background: var(--surface-soft); border-radius: 14px; padding: 15px; border: 1px solid var(--line); }
.unit-mini strong { display: block; line-height: 1.5; font-size: 13px; }
.unit-mini span { color: var(--muted); font-size: 11px; }
.page-heading { margin: 8px 0 24px; max-width: 770px; }
.page-heading h1 { font-size: clamp(29px,4vw,38px); }
.page-heading > p:last-child { color: var(--muted); margin: 10px 0 0; }
.learning-note { background: var(--amber-soft); border-right: 4px solid var(--amber); border-radius: 10px; padding: 13px 16px; font-size: 13px; margin-bottom: 18px; }
.lesson-list, .unit-list { display: grid; gap: 10px; }
.lesson-card { background: var(--surface); border: 1px solid var(--line); border-radius: 15px; padding: 16px 18px; display: grid; grid-template-columns: 46px minmax(0,1fr) auto; align-items: center; gap: 14px; transition: border .18s ease, box-shadow .18s ease; }
.lesson-card:hover { border-color: #a9cbc4; box-shadow: var(--shadow); }
.lesson-index { width: 40px; height: 40px; border-radius: 13px; background: var(--brand-soft); display: grid; place-items: center; color: var(--brand-dark); font-weight: 700; direction: ltr; }
.lesson-card h3 { margin: 0; font-size: 15px; line-height: 1.45; }
.lesson-card p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.lesson-card-meta { display: flex; flex-direction: column; align-items: end; gap: 7px; white-space: nowrap; }
.lesson-count { color: var(--muted); font-size: 11px; }
.level-chip { display: inline-flex; align-items: center; justify-content: center; min-width: 39px; direction: ltr; padding: 3px 8px; border-radius: 20px; background: var(--amber-soft); color: #79501c; font: 700 11px Arial,sans-serif; }
.level-chip.level-A1 { background: var(--brand-soft); color: var(--brand-dark); }
.level-chip.level-B1 { background: #eee9f6; color: #604b83; }
.done-mark { color: var(--brand); font-size: 17px; }
.unit-block { padding: 19px; border: 1px solid var(--line); background: var(--surface); border-radius: 18px; }
.unit-block + .unit-block { margin-top: 15px; }
.unit-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.unit-badge { width: 42px; height: 42px; border-radius: 14px; background: var(--brand); color: white; display: grid; place-items: center; direction: ltr; font: 700 13px Arial,sans-serif; }
.unit-header h2 { margin: 0; font-size: 18px; }
.unit-header p { margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.unit-lessons { display: grid; grid-template-columns: repeat(2,1fr); gap: 8px; }
.unit-lesson { width: 100%; text-align: right; border: 1px solid var(--line); background: #fff; border-radius: 11px; padding: 11px 13px; display: flex; align-items: center; gap: 10px; color: var(--ink); }
.unit-lesson:hover { border-color: var(--brand); background: #fbfefa; }
.unit-lesson span:first-child { color: var(--brand); font: 700 11px Arial,sans-serif; direction: ltr; }
.unit-lesson strong { font-size: 12px; font-weight: 600; }
.back-link { border: 0; background: transparent; color: var(--brand-dark); font-weight: 700; padding: 8px 0 14px; }
.lesson-heading-card { display: flex; justify-content: space-between; align-items: center; gap: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 19px; padding: 22px 24px; box-shadow: var(--shadow); }
.lesson-heading-card h1 { margin: 0; font: 700 clamp(23px,4vw,32px)/1.3 Arial,Tahoma,sans-serif; direction: ltr; text-align: right; }
.lesson-title-ar { margin: 6px 0 0; color: var(--muted); }
.lesson-total { flex: 0 0 auto; width: 92px; height: 84px; background: var(--brand-soft); border-radius: 17px; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.lesson-total strong { font: 700 26px Arial,sans-serif; color: var(--brand-dark); }
.lesson-total span { color: var(--muted); font-size: 10px; }
.lesson-toolbar { display: flex; gap: 10px; align-items: center; justify-content: space-between; margin: 20px 0 11px; color: var(--muted); font-size: 12px; }
.lesson-focus { margin: 12px 0 16px; padding: 16px 18px; border: 1px solid #d9e8e0; border-right: 4px solid var(--brand); border-radius: 14px; background: #edf5f0; }
.lesson-focus h2 { margin: 0; font-size: 16px; }
.lesson-focus > p:not(.eyebrow) { margin: 5px 0; color: var(--muted); font-size: 13px; }
.focus-example { margin-top: 8px; color: var(--brand-dark); font: 700 15px/1.5 Arial,sans-serif; text-align: left; }
.focus-example-ar { margin-bottom: 0 !important; }
.word-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.word-card { min-width: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 15px; padding: 16px; box-shadow: 0 4px 12px rgba(29,48,52,.025); }
.word-card-top { display: flex; justify-content: space-between; align-items: start; gap: 8px; }
.word-title-wrap h3 { margin: 4px 0 1px; color: var(--ink); font: 700 22px/1.3 Arial,sans-serif; text-align: left; overflow-wrap: anywhere; }
.word-meaning { font-size: 16px; margin: 0; font-weight: 700; }
.word-pos { color: var(--muted); font-size: 10px; margin: 7px 0; }
.word-tools { display: flex; flex: 0 0 auto; gap: 5px; }
.icon-button { min-width: 33px; height: 33px; padding: 0 7px; border: 1px solid var(--line); background: white; border-radius: 9px; color: var(--muted); }
.icon-button:hover, .icon-button.is-saved { color: var(--brand-dark); border-color: #a9cbc4; background: var(--brand-soft); }
.sound-icon { width: 16px; height: 16px; vertical-align: middle; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.word-level { color: var(--brand-dark); background: var(--brand-soft); border-radius: 20px; padding: 2px 7px; font: 700 10px Arial,sans-serif; direction: ltr; display: inline-block; }
.word-example { border-top: 1px solid var(--line); margin-top: 10px; padding-top: 9px; font: 14px/1.5 Arial,sans-serif; text-align: left; color: #35484b; }
.word-example-ar { color: var(--muted); font-size: 12px; margin: 5px 0 0; }
.word-card-actions { display: flex; gap: 6px; border-top: 1px solid var(--line); padding-top: 9px; margin-top: 10px; }
.small-action { border: 0; background: transparent; color: var(--brand-dark); padding: 3px 2px; font-size: 11px; font-weight: 700; }
.small-action:hover { text-decoration: underline; }
.pagination { display: flex; justify-content: center; align-items: center; gap: 9px; margin: 19px 0; }
.pagination button { border: 1px solid var(--line); background: var(--surface); color: var(--ink); border-radius: 9px; padding: 8px 13px; font-size: 12px; }
.pagination button:disabled { opacity: .45; cursor: default; }
.pagination span { color: var(--muted); font-size: 12px; }
.lesson-finish { margin-top: 24px; background: var(--surface-soft); border-radius: 14px; padding: 15px 18px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.lesson-finish p { margin: 0; font-size: 13px; }
.bank-controls { display: grid; grid-template-columns: minmax(230px,1.5fr) minmax(150px,.7fr) minmax(200px,1fr); gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 15px; padding: 13px; }
.search-field { display: flex; align-items: center; gap: 9px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px; color: var(--brand); }
.search-field > span:not(.sr-only) { font: 28px Arial,sans-serif; }
.search-field input { width: 100%; min-width: 0; padding: 10px 0; border: 0; outline: 0; background: transparent; color: var(--ink); direction: auto; font-size: 13px; }
.filter-field { display: grid; gap: 3px; color: var(--muted); font-size: 10px; }
.filter-field select { width: 100%; border: 1px solid var(--line); border-radius: 9px; background: white; color: var(--ink); padding: 7px 8px; font-size: 12px; }
.results-line { display: flex; align-items: center; gap: 6px; margin: 15px 2px 11px; color: var(--muted); font-size: 12px; }
.results-line strong { color: var(--brand-dark); font-size: 15px; }
.results-spacer { flex: 1; }
.empty-state { grid-column: 1/-1; background: var(--surface); border: 1px dashed #c9c7ba; border-radius: 14px; text-align: center; padding: 28px; color: var(--muted); }
.review-actions { display: flex; justify-content: space-between; align-items: center; gap: 16px; background: var(--brand-soft); border-radius: 15px; padding: 18px; margin-bottom: 24px; }
.review-intro { display: grid; }
.review-intro strong { font-size: 15px; }
.review-intro span { color: var(--muted); font-size: 12px; }
.subheading { font-size: 18px; margin: 20px 0 12px; }
.practice-card { max-width: 720px; margin: 30px auto; padding: clamp(20px,5vw,40px); background: var(--surface); border: 1px solid var(--line); border-radius: 23px; box-shadow: var(--shadow); }
.practice-word { direction: ltr; font: 700 clamp(34px,7vw,54px)/1.25 Arial,sans-serif; text-align: center; margin: 12px 0 25px; }
.practice-progress { color: var(--muted); font-size: 12px; text-align: center; }
.practice-choices { display: grid; grid-template-columns: repeat(2,1fr); gap: 9px; }
.practice-choice { background: white; border: 1px solid var(--line); border-radius: 11px; padding: 13px; text-align: center; color: var(--ink); }
.practice-choice:hover { border-color: var(--brand); }
.practice-choice.is-correct { background: var(--brand-soft); border-color: var(--brand); }
.practice-choice.is-wrong { background: #fbebea; border-color: var(--rose); }
.practice-feedback { min-height: 25px; margin: 10px 0; font-size: 13px; text-align: center; }
.practice-next { display: flex; justify-content: center; margin-top: 10px; }
.practice-score { font-size: 24px; color: var(--brand-dark); font-weight: 700; text-align: center; }
.about-card { max-width: 800px; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 22px; }
.about-card p, .about-card li { color: var(--muted); font-size: 13px; }
.about-card li { margin: 7px 0; }
.notice { margin: 12px 0 0; padding: 10px 13px; border-radius: 10px; font-size: 12px; }
.notice-warn { background: var(--amber-soft); color: #73501f; }
.notice-info { background: var(--brand-soft); color: var(--brand-dark); }
.site-footer { min-height: 72px; border-top: 1px solid var(--line); display: flex; align-items: center; flex-wrap: wrap; gap: 12px 18px; color: var(--muted); font-size: 11px; }
.footer-link { font-size: 11px; }
.footer-note { margin-right: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
[hidden] { display: none !important; }
@media (max-width: 860px) {
  .site-header { align-items: flex-start; flex-direction: column; gap: 7px; padding: 14px 0 8px; }
  .main-nav { width: 100%; padding-bottom: 5px; }
  .nav-link { padding: 8px 10px; }
  .hero { grid-template-columns: 1fr 230px; padding: 36px 27px; gap: 20px; }
  .unit-preview { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 620px) {
  .site-shell { width: min(100% - 22px, 560px); }
  .site-header { min-height: unset; }
  .hero { grid-template-columns: 1fr; padding: 28px 20px 20px; gap: 18px; border-radius: 19px; }
  .hero-note { min-height: unset; padding: 16px; }
  .hero-note .note-copy { margin-top: 4px; }
  .hero-text { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .stats-strip { grid-template-columns: repeat(2,1fr); gap: 14px 0; padding: 17px 2px 23px; }
  .stat-item:nth-child(2) { border-left: 0; }
  .path-preview { grid-template-columns: 1fr; }
  .unit-preview { grid-template-columns: repeat(2,1fr); }
  .section-heading { align-items: start; flex-direction: column; gap: 4px; }
  .screen { padding-top: 23px; }
  .lesson-card { grid-template-columns: 38px minmax(0,1fr); padding: 13px; gap: 10px; }
  .lesson-index { width: 35px; height: 35px; }
  .lesson-card-meta { grid-column: 2; flex-direction: row; align-items: center; justify-content: space-between; }
  .unit-block { padding: 13px; }
  .unit-lessons { grid-template-columns: 1fr; }
  .lesson-heading-card { padding: 17px; }
  .lesson-total { width: 75px; height: 72px; }
  .word-grid { grid-template-columns: 1fr; }
  .bank-controls { grid-template-columns: 1fr 1fr; }
  .search-field { grid-column: 1/-1; }
  .filter-field:last-child { grid-column: 1/-1; }
  .lesson-finish, .review-actions { align-items: stretch; flex-direction: column; }
  .practice-choices { grid-template-columns: 1fr; }
  .site-footer { align-items: flex-start; flex-direction: column; justify-content: center; padding: 15px 0; gap: 3px; }
  .footer-note { margin-right: 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; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}