body {
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 0%, var(--accent-soft) 0, transparent 30rem),
    var(--bg);
}

.home-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.home-hero {
  position: relative;
  overflow: hidden;
  min-height: 330px;
  padding: 28px clamp(24px, 5vw, 64px) 40px;
  color: #fff;
  background: #231d2a;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.home-hero::after {
  content: "IELTS";
  position: absolute;
  right: -0.04em;
  bottom: -0.28em;
  color: rgba(255, 255, 255, 0.045);
  font-size: clamp(8rem, 21vw, 16rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.08em;
  pointer-events: none;
}

.home-brand {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  letter-spacing: 0.02em;
}

.home-brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 9px;
  background: var(--accent-bright);
  font-weight: 800;
}

.home-brand strong { font-weight: 700; }

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 690px;
  margin-top: clamp(38px, 7vw, 74px);
}

.eyebrow {
  color: var(--accent);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.home-hero .eyebrow { color: #ffb0c9; }

.home-hero h1 {
  max-width: 700px;
  margin-top: 8px;
  font-size: clamp(2.25rem, 6vw, 4.4rem);
  font-weight: 750;
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.hero-lead {
  max-width: 62ch;
  margin-top: 16px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.98rem;
}

.hero-stats {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 34px;
}

.hero-stat {
  display: flex;
  align-items: baseline;
  gap: 7px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.78rem;
}

.hero-stat strong {
  color: #fff;
  font-size: 1.25rem;
  font-variant-numeric: tabular-nums;
}

.resume-card {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  width: calc(100% - clamp(24px, 6vw, 72px));
  margin: -20px auto 0;
  padding: 17px 20px;
  color: var(--text);
  text-decoration: none;
  background: color-mix(in srgb, var(--card) 94%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(18px);
}

.resume-card[hidden] { display: none; }
.resume-icon { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 13px; color: var(--accent); background: var(--accent-soft); }
.resume-icon svg { width: 20px; fill: currentColor; }
.resume-copy { min-width: 0; }
.resume-copy small { display: block; color: var(--muted); font-size: 0.72rem; font-weight: 750; letter-spacing: 0.08em; text-transform: uppercase; }
.resume-copy strong { display: block; overflow: hidden; margin-top: 2px; font-size: 1rem; text-overflow: ellipsis; white-space: nowrap; }
.resume-copy span { display: block; overflow: hidden; color: var(--muted); font-size: 0.8rem; text-overflow: ellipsis; white-space: nowrap; }
.resume-action { display: flex; align-items: center; gap: 6px; color: var(--accent); font-size: 0.84rem; font-weight: 750; white-space: nowrap; }
.resume-card:hover { border-color: var(--accent); transform: translateY(-2px); }

.library { margin-top: 64px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; }
.section-heading h2, .anki-panel h2 { margin-top: 3px; font-size: clamp(1.55rem, 3vw, 2.15rem); letter-spacing: -0.035em; }

.lesson-search {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) auto;
  align-items: center;
  gap: 9px;
  width: min(340px, 100%);
  padding: 10px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 13px;
  box-shadow: var(--shadow-sm);
}
.lesson-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.lesson-search svg { width: 18px; fill: none; stroke: var(--muted); stroke-width: 1.8; stroke-linecap: round; }
.lesson-search input { min-width: 0; border: 0; outline: 0; background: transparent; font-size: 0.88rem; }
.lesson-search input::placeholder { color: var(--muted); }
.lesson-search kbd { padding: 1px 6px; color: var(--muted); background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; font: 0.72rem var(--font-ui); }

.skill-tabs { margin-top: 24px; }
.skill-tabs .ui-tab { gap: 7px; }
.skill-dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; opacity: 0.55; }

.book-section, .shelf-section { margin-top: 30px; }
.book-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.book-head h3 { font-size: 1.08rem; }
.book-head p { color: var(--muted); font-size: 0.82rem; }

.test-tabs { padding: 4px; background: var(--surface-2); border-color: transparent; }
.test-tabs .ui-tab { min-width: 76px; justify-content: center; border-radius: 9px; }
.test-tabs .ui-tab[aria-selected="true"] { background: var(--card); box-shadow: var(--shadow-sm); }
.test-tabs .tab-count { margin-left: 2px; color: var(--muted); font-size: 0.7rem; }

.test-panel[hidden] { display: none; }
.skill-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.skill-columns.cols-1 { grid-template-columns: minmax(0, 1fr); }
.skill-columns.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.skill-column {
  min-width: 0;
  padding: 16px;
  background: color-mix(in srgb, var(--card) 74%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.skill-column-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.skill-column-head h4 { font-size: 0.82rem; letter-spacing: 0.055em; text-transform: uppercase; }
.skill-column-head span { color: var(--muted); font-size: 0.72rem; }
.lesson-list { display: grid; gap: 8px; list-style: none; }

.lesson-card {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 11px;
  min-height: 68px;
  padding: 10px 11px;
  color: var(--text);
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 13px;
  box-shadow: var(--shadow-sm);
}
.lesson-card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.lesson-card.off { color: var(--muted); background: transparent; border-style: dashed; box-shadow: none; }
.lesson-card.off:hover { transform: none; border-color: var(--border); }
.lesson-index { display: grid; width: 38px; height: 38px; place-items: center; border-radius: 11px; color: var(--accent); background: var(--accent-soft); font-size: 0.78rem; font-weight: 800; }
.lesson-card[data-skill="L"] .lesson-index { color: var(--listening); background: var(--listening-soft); }
.lesson-card[data-skill="R"] .lesson-index { color: var(--reading); background: var(--reading-soft); }
.lesson-card[data-skill="W"] .lesson-index { color: var(--writing); background: var(--writing-soft); }
.lesson-title { display: block; overflow: hidden; font-size: 0.87rem; font-weight: 700; line-height: 1.3; text-overflow: ellipsis; }
.lesson-meta { display: block; margin-top: 3px; color: var(--muted); font-size: 0.72rem; }
.lesson-go { color: var(--muted); font-size: 1.2rem; }

.empty-panel {
  padding: 46px 24px;
  color: var(--muted);
  text-align: center;
  background: var(--surface-2);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.empty-panel strong { display: block; color: var(--text); margin-bottom: 4px; }

.search-results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-top: 26px; }
.search-results .empty-panel { grid-column: 1 / -1; }

.shelf-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.shelf-card { min-height: 96px; }
.shelf-card .lesson-index { width: 48px; height: 48px; }

.anki-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 42px;
  align-items: center;
  margin-top: 66px;
  padding: clamp(24px, 5vw, 48px);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}
.anki-panel p:not(.eyebrow) { max-width: 58ch; margin-top: 10px; color: var(--muted); }
.anki-panel details { padding: 14px 16px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 13px; }
.anki-panel summary { cursor: pointer; font-size: 0.86rem; font-weight: 700; }
.commands { display: grid; gap: 7px; margin-top: 12px; }
.commands code { overflow-x: auto; padding: 8px 10px; color: var(--text); background: var(--code); border-radius: 7px; font-size: 0.74rem; white-space: nowrap; }

footer { padding-top: 32px; color: var(--muted); font-size: 0.76rem; text-align: center; }

@media (max-width: 900px) {
  .skill-columns, .search-results { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .skill-column:last-child { grid-column: 1 / -1; }
  .anki-panel { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 640px) {
  .home-shell { width: min(100% - 24px, 1180px); padding-top: 12px; }
  .home-hero { min-height: 370px; padding: 20px 20px 42px; border-radius: 22px; }
  .hero-copy { margin-top: 48px; }
  .home-hero h1 { font-size: 2.5rem; }
  .hero-lead { font-size: 0.9rem; }
  .hero-stats { gap: 10px 20px; margin-top: 26px; }
  .resume-card { width: calc(100% - 16px); grid-template-columns: auto minmax(0, 1fr); gap: 12px; padding: 14px; }
  .resume-action { display: none; }
  .library { margin-top: 48px; }
  .section-heading { align-items: stretch; flex-direction: column; gap: 16px; }
  .lesson-search { width: 100%; }
  .skill-tabs { width: 100%; overflow-x: auto; }
  .skill-tabs .ui-tab { flex: 0 0 auto; }
  .book-head { align-items: stretch; flex-direction: column; }
  .test-tabs { width: 100%; overflow-x: auto; }
  .test-tabs .ui-tab { min-width: 70px; flex: 1 0 auto; }
  .skill-columns, .skill-columns.cols-1, .skill-columns.cols-2, .skill-columns.cols-3,
  .search-results, .shelf-grid { grid-template-columns: 1fr; }
  .skill-column:last-child { grid-column: auto; }
  .anki-panel { margin-top: 48px; padding: 24px 20px; border-radius: 20px; }
}