/* LuminaLex UI foundation v112 — shared visual language and adaptive shell. */
:root {
  --ui-canvas: #f4f7f2;
  --ui-surface: #ffffff;
  --ui-surface-soft: #f7faf7;
  --ui-ink: #13261d;
  --ui-muted: #66756d;
  --ui-primary: #16734a;
  --ui-primary-strong: #0d5436;
  --ui-primary-soft: #e8f5ed;
  --ui-accent: #d8a64c;
  --ui-line: #dce7df;
  --ui-radius-sm: 12px;
  --ui-radius-md: 18px;
  --ui-radius-lg: 26px;
  --ui-shadow-sm: 0 1px 2px rgba(17, 42, 29, .04), 0 8px 24px rgba(17, 42, 29, .05);
  --ui-shadow-lg: 0 22px 60px rgba(17, 57, 36, .12);
  --ui-page: 1240px;
  --ui-sidebar: 224px;
  --ui-topbar: 68px;
  --ui-space: clamp(14px, 2vw, 24px);
  --bg: var(--ui-canvas);
  --panel: rgba(255,255,255,.96);
  --panel-solid: var(--ui-surface);
  --text: var(--ui-ink);
  --muted: var(--ui-muted);
  --line: var(--ui-line);
  --brand: var(--ui-primary);
  --brand-dark: var(--ui-primary-strong);
  --brand-2: #93c7a8;
  --radius: var(--ui-radius-md);
  --shadow: var(--ui-shadow-lg);
}

html { scroll-behavior: smooth; background: var(--ui-canvas); }
body {
  min-width: 320px;
  background:
    radial-gradient(circle at 82% -8%, rgba(216,166,76,.11), transparent 24rem),
    radial-gradient(circle at 10% 4%, rgba(22,115,74,.10), transparent 28rem),
    var(--ui-canvas);
  letter-spacing: -.008em;
}
button, input, textarea, select { min-height: 42px; }
button { touch-action: manipulation; }

/* Desktop: calm app frame with real navigation, not a stretched phone layout. */
@media (min-width: 1000px) {
  .app-shell {
    display: grid !important;
    grid-template-columns: var(--ui-sidebar) minmax(0, 1fr) !important;
    grid-template-rows: var(--ui-topbar) minmax(0, 1fr) !important;
    padding: 0 !important;
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    box-shadow: none !important;
  }
  .topbar {
    position: sticky !important;
    inset: 0 0 auto 0 !important;
    grid-column: 1 / -1;
    height: var(--ui-topbar) !important;
    padding: 0 24px !important;
    justify-content: space-between !important;
    background: rgba(13, 36, 26, .94) !important;
    box-shadow: none !important;
    border-bottom: 1px solid rgba(255,255,255,.08);
    width: 100% !important;
    max-width: none !important;
    transform: none !important;
    display: flex !important;
  }
  .app-shell.topbar-hidden { padding-top: 0 !important; }
  .app-shell.topbar-hidden .topbar, .topbar.is-hidden { display: flex !important; }
  .brand-title { font-size: 17px !important; letter-spacing: -.02em; }
  .brand-subtitle { display: block !important; max-width: 52vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topbar-actions { display: flex !important; }
  .topbar-actions .ghost-btn, .topbar-actions .primary-btn { display: none !important; }
  .top-settings-btn { display: grid !important; place-items: center; }
  .sidebar {
    position: sticky !important;
    inset: var(--ui-topbar) auto auto 0 !important;
    grid-column: 1;
    grid-row: 2;
    width: var(--ui-sidebar) !important;
    height: calc(100vh - var(--ui-topbar)) !important;
    padding: 24px 14px !important;
    transform: none !important;
    border: 0 !important;
    border-right: 1px solid var(--ui-line) !important;
    background: rgba(248,251,248,.78) !important;
    box-shadow: none !important;
    backdrop-filter: blur(18px);
    max-width: var(--ui-sidebar) !important;
  }
  .side-section-title { display: block !important; margin: 0 12px 12px !important; font-size: 11px; }
  .nav-list {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 5px !important;
    height: auto !important;
  }
  .nav-item {
    min-height: 48px !important;
    padding: 8px 12px !important;
    display: flex !important;
    flex-direction: row !important;
    justify-content: flex-start !important;
    gap: 11px !important;
    border-radius: 13px !important;
    font-size: 14px !important;
  }
  .nav-item .tab-ico { width: 30px; height: 30px; padding: 0 !important; background: rgba(22,115,74,.07) !important; }
  .nav-item.active { color: var(--ui-primary-strong) !important; background: var(--ui-primary-soft) !important; }
  .nav-item.active .tab-ico { color: #fff !important; background: var(--ui-primary) !important; }
  .side-card { display: none !important; }
  .main {
    grid-column: 2;
    grid-row: 2;
    padding: clamp(24px, 3vw, 42px) !important;
    min-width: 0;
  }
  .view { width: min(100%, var(--ui-page)) !important; max-width: var(--ui-page) !important; }
}

/* Shared surfaces: less nesting, stronger hierarchy. */
.main { isolation: isolate; }
.view.active { animation: ui-view-in .22s ease-out; }
@keyframes ui-view-in { from { opacity: .35; transform: translateY(5px); } to { opacity: 1; transform: none; } }
.card, .course-card, .home-collapsible, .home-weekly-goal, .home-stickiness-panel,
.practice-first-guide, .resources-first-guide, .lecture-level-panel, .word-stage-card {
  border-color: rgba(40, 89, 61, .13) !important;
  box-shadow: var(--ui-shadow-sm) !important;
}
.card, .home-collapsible { background: rgba(255,255,255,.94) !important; }
.section-head { margin: 30px 0 14px !important; }
.section-title { font-size: clamp(20px, 2.4vw, 28px) !important; letter-spacing: -.035em; }
.eyebrow { letter-spacing: .11em !important; color: var(--ui-primary) !important; }
.card-desc, .muted, .section-note { color: var(--ui-muted) !important; }

.primary-btn, .home-primary-btn, .course-enter-btn, .home-rescue-task-btn {
  background: linear-gradient(135deg, var(--ui-primary), var(--ui-primary-strong)) !important;
  color: #fff !important;
  box-shadow: 0 8px 18px rgba(22,115,74,.18);
  border-radius: var(--ui-radius-sm) !important;
}
.primary-btn:hover, .home-primary-btn:hover, .course-enter-btn:hover { filter: brightness(1.06); transform: translateY(-1px); }
.ghost-btn, .level-pill, .lesson-workbench .tab {
  border-color: var(--ui-line) !important;
  background: rgba(255,255,255,.86) !important;
  border-radius: var(--ui-radius-sm) !important;
}
.lesson-workbench .tab.active,
.lesson-workbench .tab[aria-selected="true"] {
  color: #fff !important;
  background: var(--ui-primary) !important;
  border-color: var(--ui-primary) !important;
  box-shadow: 0 7px 16px rgba(22,115,74,.18) !important;
}

/* Signature hero: branded, compact and useful rather than oversized decoration. */
.hero, .mini-hero, .selected-hero, .home-hero-dashboard {
  border-radius: var(--ui-radius-lg) !important;
  background:
    radial-gradient(circle at 88% 12%, rgba(216,166,76,.34), transparent 28%),
    linear-gradient(135deg, #0d2d20 0%, #12603e 58%, #218358 100%) !important;
  box-shadow: var(--ui-shadow-lg) !important;
}
.home-hero-dashboard .home-hero-copy h1 {
  color: #fff !important;
  text-shadow: 0 2px 18px rgba(0,0,0,.18);
}
.home-hero-dashboard .home-hero-copy > p {
  color: rgba(255,255,255,.82) !important;
}
.home-hero-dashboard .home-hero-copy .home-goal-pill,
.home-hero-dashboard .home-hero-copy .home-streak-line {
  color: #123f2d !important;
  background: rgba(255,255,255,.84) !important;
}
.home-hero-dashboard .home-goal-link {
  color: #f0fff7 !important;
  text-decoration-color: rgba(255,255,255,.68) !important;
}

/* Stable single-layer reading ring; avoids the mobile pseudo-element crescent. */
.home-progress-ring {
  position: relative !important;
  box-sizing: border-box !important;
  width: 42px !important;
  min-width: 42px !important;
  height: 42px !important;
  min-height: 42px !important;
  aspect-ratio: 1 / 1;
  flex: 0 0 42px !important;
  isolation: isolate;
  background:
    radial-gradient(circle at center, #fff 0 55%, transparent 57%),
    conic-gradient(#16a34a 0 var(--deg, 0deg), #e5f0e9 var(--deg, 0deg) 360deg) !important;
}
.home-progress-ring::before { display: none !important; }
.mini-hero, .selected-hero { padding: clamp(20px, 3vw, 34px) !important; }
.selected-hero h1, .mini-hero h1 { letter-spacing: -.045em; }
.hero-actions .ghost-btn, .selected-hero > .ghost-btn {
  color: #fff !important;
  background: rgba(255,255,255,.12) !important;
  border-color: rgba(255,255,255,.25) !important;
  backdrop-filter: blur(8px);
}

/* Course/library and lecture: scan quickly, read comfortably. */
.course-stack { gap: 12px !important; }
.course-card { border-radius: 20px !important; padding: 18px !important; background: rgba(255,255,255,.94) !important; }
.course-card:hover { border-color: rgba(22,115,74,.32) !important; }
.course-name { letter-spacing: -.025em; }
.course-badge, .meta-chip, .count-pill, .chip { border-radius: 9px !important; }
.lesson-layout { grid-template-columns: minmax(0, 1fr) !important; }
.lesson-workbench { padding: clamp(14px, 2vw, 22px) !important; }
.lesson-workbench .tabs { scrollbar-width: none; position: sticky; top: calc(var(--ui-topbar) + 4px); z-index: 10; padding: 8px; margin: -8px -8px 12px !important; background: rgba(255,255,255,.88); backdrop-filter: blur(14px); }
.lecture-paper { max-width: 920px !important; margin: 12px auto !important; padding: clamp(18px, 4vw, 42px) !important; border-radius: 20px !important; font-size: clamp(15px, 1.5vw, 17px); line-height: 1.82; }
.lecture-paper h1, .lecture-paper h2, .lecture-paper h3 { letter-spacing: -.025em; scroll-margin-top: 110px; }

/* Floating controls: one safe interaction lane, never cover the main copy. */
.floating-ai-root { max-width: calc(100vw - 8px); }
.floating-ai-root.edge-left .ai-ball.folded {
  transform: translateX(8px);
  border-radius: 999px !important;
}
.floating-ai-root.edge-right .ai-ball.folded {
  transform: translateX(-8px);
  border-radius: 999px !important;
}
.floating-ai-root .floating-ai, .floating-ai-root button { box-shadow: 0 12px 34px rgba(11,57,36,.24) !important; }
.back-top, .back-to-top, .floating-back, [class*="scroll-top"] { right: max(16px, env(safe-area-inset-right)) !important; }
.toast { bottom: calc(86px + env(safe-area-inset-bottom)) !important; box-shadow: 0 14px 36px rgba(0,0,0,.24); }
@media (min-width: 1000px) {
  .floating-ai-root { bottom: 24px !important; }
  .toast { bottom: 24px !important; }
}

/* Empty/loading/error states use the same quiet language. */
.empty-state { padding: clamp(34px, 7vw, 72px) 20px !important; border: 1px dashed rgba(22,115,74,.25); border-radius: var(--ui-radius-md); background: rgba(255,255,255,.58); }
.empty-state .empty-icon { width: 48px; height: 48px; display: grid; place-items: center; margin: 0 auto 14px !important; border-radius: 16px; background: var(--ui-primary-soft); color: var(--ui-primary); font-size: 25px !important; }

/* Mobile: reachable navigation, compact spacing and protected content area. */
@media (max-width: 999px) {
  .app-shell { padding-top: calc(58px + env(safe-area-inset-top)) !important; padding-bottom: calc(72px + env(safe-area-inset-bottom)) !important; }
  .topbar { height: calc(58px + env(safe-area-inset-top)) !important; padding: env(safe-area-inset-top) 14px 0 !important; box-shadow: 0 4px 16px rgba(15,31,25,.14) !important; }
  .brand-logo { width: 34px !important; height: 34px !important; border-radius: 10px !important; }
  .brand-title { font-size: 15px !important; }
  .main { padding: 12px 12px 20px !important; }
  .view { width: 100% !important; max-width: 100% !important; }
  .sidebar { height: calc(66px + env(safe-area-inset-bottom)) !important; padding: 5px 6px calc(5px + env(safe-area-inset-bottom)) !important; border-top-color: rgba(30,70,47,.12) !important; box-shadow: 0 -4px 20px rgba(18,57,36,.08) !important; }
  .nav-item { min-width: 0; min-height: 52px !important; font-size: 11px !important; border-radius: 12px !important; }
  .nav-item .tab-ico { height: 23px !important; min-width: 25px !important; }
  .card { padding: 14px !important; }
  .section-head { margin: 22px 0 10px !important; gap: 6px !important; }
  .hero, .mini-hero, .selected-hero, .home-hero-dashboard { border-radius: 20px !important; }
  .selected-hero { margin-bottom: 10px !important; }
  .course-card { padding: 14px !important; gap: 12px !important; }
  .category-icon.xl { width: 46px !important; height: 46px !important; flex-basis: 46px !important; border-radius: 14px !important; }
  .course-cta { align-self: center; }
  .lecture-paper { padding: 18px 15px !important; border-radius: 16px !important; }
  .lesson-workbench .tabs { top: 0; }
  .home-learning-hub, .grid, .home-mid-grid { gap: 10px !important; }
}

/* v139: persistent liquid-glass app chrome on every learning page. */
.topbar,
.app-shell.topbar-hidden .topbar,
.topbar.is-hidden {
  display: flex !important;
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% -30%, rgba(255,255,255,.98), transparent 46%),
    radial-gradient(circle at 82% 140%, rgba(113,193,151,.24), transparent 48%),
    linear-gradient(125deg, rgba(255,255,255,.76), rgba(239,249,243,.58)) !important;
  color: var(--ui-ink) !important;
  border: 1px solid rgba(255,255,255,.72) !important;
  border-width: 0 0 1px !important;
  box-shadow: 0 12px 34px rgba(20,76,48,.10), inset 0 1px 0 rgba(255,255,255,.86) !important;
  backdrop-filter: blur(26px) saturate(170%) !important;
  -webkit-backdrop-filter: blur(26px) saturate(170%) !important;
  transform: none !important;
  z-index: 1100 !important;
}
.topbar::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(105deg, transparent 20%, rgba(255,255,255,.34) 45%, transparent 68%);
  opacity: .72;
}
.topbar > * { position: relative; z-index: 1; }
.topbar .brand-title { color: #143326 !important; }
.topbar .brand-subtitle { color: #5f766b !important; }
.topbar .brand-logo {
  border: 1px solid rgba(255,255,255,.9) !important;
  box-shadow: 0 7px 22px rgba(20,76,48,.13), inset 0 1px 0 #fff !important;
}
.topbar .top-settings-btn {
  border: 1px solid rgba(22,115,74,.18) !important;
  background: rgba(255,255,255,.58) !important;
  color: var(--ui-primary-strong) !important;
  box-shadow: 0 8px 22px rgba(20,76,48,.12), inset 0 1px 0 rgba(255,255,255,.9) !important;
  backdrop-filter: blur(14px) saturate(150%) !important;
  -webkit-backdrop-filter: blur(14px) saturate(150%) !important;
}
.topbar .top-settings-btn:hover {
  background: rgba(255,255,255,.84) !important;
  border-color: rgba(22,115,74,.28) !important;
}
.app-shell.topbar-hidden { padding-top: calc(58px + env(safe-area-inset-top)) !important; }
.app-shell.topbar-hidden .main { padding-top: 12px !important; }

@media (min-width: 1000px) {
  .topbar,
  .app-shell.topbar-hidden .topbar,
  .topbar.is-hidden {
    height: var(--ui-topbar) !important;
    padding: 0 24px !important;
  }
  .sidebar {
    position: fixed !important;
    top: var(--ui-topbar) !important;
    left: 0 !important;
    bottom: 0 !important;
    z-index: 1050 !important;
    background: rgba(248,251,248,.72) !important;
    backdrop-filter: blur(24px) saturate(150%) !important;
    -webkit-backdrop-filter: blur(24px) saturate(150%) !important;
  }
}

@media (max-width: 999px) {
  .app-shell,
  .app-shell.topbar-hidden {
    padding-top: calc(58px + env(safe-area-inset-top)) !important;
  }
  .topbar,
  .app-shell.topbar-hidden .topbar,
  .topbar.is-hidden {
    height: calc(58px + env(safe-area-inset-top)) !important;
    padding: env(safe-area-inset-top) 14px 0 !important;
  }
}

/* ===== Phase 4: auth, onboarding, settings and feedback ===== */
#authGate { padding: clamp(14px, 4vw, 32px) !important; }
#authGate .auth-shell { width: min(100%, 980px) !important; }
#authGate .auth-card { width: min(100%, 470px); margin-left: auto; padding: clamp(22px, 4vw, 38px) !important; }
#authGate::before {
  content: '学习不是从更多功能开始，而是从下一件清晰的小事开始。';
  position: absolute;
  left: max(5vw, calc((100vw - 980px) / 2));
  width: min(38vw, 390px);
  color: var(--ui-primary-strong);
  font-size: clamp(30px, 4.4vw, 54px);
  font-weight: 950;
  line-height: 1.12;
  letter-spacing: -.055em;
}
.auth-card > p:first-of-type { font-size: 13px; }
.auth-card label:not(.auth-remember):not(.consent-row) { margin-top: 13px !important; }
.auth-actions { display: grid !important; grid-template-columns: 1fr 1fr; }
.auth-actions #authLoginBtn { grid-column: 1 / -1; }
.ui-field-error { margin: 5px 2px 0; color: var(--danger); font-size: 12px; font-weight: 700; }
.ui-consent-error { outline: 2px solid rgba(185,28,28,.28); outline-offset: 4px; border-radius: 8px; }
.auth-message { border-left: 3px solid var(--danger); }

.home-onboarding-modal .home-goal-modal-card { width: min(1040px, calc(100vw - 28px)) !important; }
.home-onboarding-modal .home-goal-modal-head > button { flex: 0 0 auto; min-width: 62px; white-space: nowrap; }
.home-onboarding-modal .home-onboarding-rail { border-radius: 18px; background: var(--ui-surface-soft); }
.home-onboarding-modal .home-onboarding-choice { min-height: 88px; border-radius: 16px !important; }
.home-onboarding-modal .home-onboarding-choice.active { box-shadow: inset 0 0 0 1px var(--ui-primary); }
.home-onboarding-footer { position: sticky; bottom: 0; z-index: 4; padding-top: 12px !important; background: linear-gradient(transparent, var(--ui-surface) 20%); }

.ui-settings-nav { position: sticky; top: calc(var(--ui-topbar) + 8px); z-index: 12; display: flex; gap: 7px; overflow-x: auto; margin: 0 0 14px; padding: 7px; border: 1px solid var(--ui-line); border-radius: 15px; background: rgba(255,255,255,.88); backdrop-filter: blur(14px); scrollbar-width: none; }
.ui-settings-nav button { flex: 0 0 auto; min-height: 36px; padding: 7px 11px; border-radius: 10px; background: transparent; color: var(--ui-muted); font-size: 12px; font-weight: 800; }
.ui-settings-nav button:hover { background: var(--ui-primary-soft); color: var(--ui-primary-strong); }
.ui-settings-grid { grid-template-columns: repeat(2, minmax(0,1fr)) !important; align-items: start; }
.ui-settings-grid > .card { scroll-margin-top: 130px; }
.ui-settings-grid > [data-settings-group="account"] { border-top: 3px solid var(--ui-primary) !important; }
.ui-settings-grid > [data-settings-group="system"] { background: var(--ui-surface-soft) !important; }

.toast { min-width: min(280px, calc(100vw - 28px)); text-align: center; font-weight: 750; }
.toast--error, .toast.show.toast--error { border: 1px solid rgba(255,255,255,.2); }
.initial-policy-card { border-radius: 24px !important; border-color: rgba(22,115,74,.16) !important; box-shadow: var(--ui-shadow-lg) !important; }
.initial-policy-scroll { border-radius: 15px !important; background: var(--ui-surface-soft) !important; }
.initial-policy-check { padding: 11px 12px; border: 1px solid var(--ui-line); border-radius: 13px; background: var(--ui-surface); }
.initial-policy-actions .primary-btn { min-width: 150px; }

@media (max-width: 720px) {
  #authGate::before { display: none; }
  #authGate .auth-shell { width: min(100%, 470px) !important; }
  #authGate .auth-card { margin: auto; padding: 20px 17px !important; }
  .auth-actions { grid-template-columns: 1fr !important; }
  .auth-actions #authLoginBtn { grid-column: auto; }
  .home-onboarding-modal .home-onboarding-shell { display: flex !important; flex-direction: column; }
  .home-onboarding-modal .home-onboarding-rail { order: 0 !important; padding: 10px !important; }
  .home-onboarding-modal .onboarding-step-counter, .home-onboarding-modal .home-onboarding-rail-note { display: none; }
  .home-onboarding-modal .home-onboarding-progress { display: grid !important; grid-template-columns: repeat(5, minmax(0,1fr)); gap: 5px !important; margin: 0 !important; }
  .home-onboarding-modal .home-onboarding-progress span { min-width: 0; padding: 7px 3px !important; justify-content: center; font-size: 0 !important; }
  .home-onboarding-modal .home-onboarding-progress span i { margin: 0 !important; font-size: 11px; }
  .home-onboarding-modal .home-onboarding-choice { min-height: 74px; }
  .ui-settings-nav { top: 4px; }
  .ui-settings-grid { grid-template-columns: 1fr !important; }
}

@media (max-width: 390px) {
  .main { padding-inline: 9px !important; }
  .nav-item { padding-inline: 0 !important; }
  .nav-item .tab-label { max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
  .hero-actions { width: 100%; display: grid !important; grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hero-actions > button { min-width: 0; padding-inline: 7px !important; font-size: 12px; }
}

body.dark {
  --ui-canvas: #0c1611;
  --ui-surface: #12231a;
  --ui-surface-soft: #172a20;
  --ui-ink: #eef7f1;
  --ui-muted: #a9b9b0;
  --ui-line: #294238;
  --ui-primary: #65bd86;
  --ui-primary-strong: #278257;
  --ui-primary-soft: rgba(101,189,134,.14);
}
body.dark .card, body.dark .course-card, body.dark .home-collapsible { background: rgba(18,35,26,.94) !important; }
body.dark .lesson-workbench .tabs { background: rgba(18,35,26,.88); }

/* Module layouts: one clear primary flow and fewer competing panels. */
.practice-hero, .english-hero, .recite-hero, .resources-hero { margin-bottom: 14px !important; }
.practice-first-guide, .resources-first-guide { padding: 14px 16px !important; border-radius: 16px !important; background: rgba(232,245,237,.72) !important; }
.practice-shell, .practice-main-grid, .practice-workspace, .recite-layout, .resources-layout { gap: 14px !important; }
.practice-problem-set-nav { border-radius: 14px !important; background: var(--ui-primary-soft) !important; }
.practice-problem-set-nav .toolbar { margin-bottom: 0 !important; }
.mistake-overview { display: flex; align-items: center; gap: 18px; }
.mistake-overview > div { min-width: 90px; display: grid; justify-items: center; padding: 12px; border-radius: 16px; background: var(--ui-primary-soft); }
.mistake-overview > div b { font-size: 30px; color: var(--ui-primary); }
.mistake-overview > div span { color: var(--ui-muted); font-size: 12px; }
.mistake-group, .mistake-item-rich { border-radius: 16px !important; overflow: clip; }
.recite-study-steps, .weekly-goal-list { gap: 8px !important; }
.recite-memory-card, .word-stage-card { border-radius: 20px !important; }
.word-main { color: var(--ui-primary) !important; }
.english-tabs { gap: 6px !important; padding: 4px !important; border-radius: 14px; background: rgba(22,115,74,.06); }
.english-tab { min-height: 38px; padding: 8px 13px !important; border: 0 !important; background: transparent !important; }
.english-tab.active { background: var(--ui-surface) !important; color: var(--ui-primary-strong) !important; box-shadow: 0 3px 12px rgba(20,80,48,.10) !important; }
.resources-first-guide-grid { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
.resources-guide-card { border-radius: 14px !important; }

.home-learning-hub { gap: 12px !important; }
.home-hero-dashboard { padding: clamp(20px, 3.3vw, 38px) !important; }
.home-primary-strip { align-items: center !important; gap: 9px !important; }
.home-big-continue { min-height: 50px !important; padding-inline: 22px !important; }
.home-progress-summary, .home-stickiness-panel-v2 { border-radius: 18px !important; }
.home-quick-grid { grid-template-columns: repeat(4, minmax(0,1fr)) !important; }
.home-quick-card { min-height: 104px; display: grid; align-content: space-between; }
.home-collapsible-toggle { min-height: 54px; }
.weekly-goal-item { background: rgba(255,255,255,.82) !important; }

.auth-shell { background: radial-gradient(circle at 20% 5%, rgba(22,115,74,.18), transparent 26rem), var(--ui-canvas) !important; }
.auth-card { border-radius: 26px !important; border: 1px solid rgba(22,115,74,.14) !important; box-shadow: var(--ui-shadow-lg) !important; }
.auth-actions { gap: 8px !important; }
.auth-actions .primary-btn { min-height: 48px; }
.auth-legacy-note { border-radius: 12px; background: var(--ui-primary-soft); color: var(--ui-primary-strong); padding: 10px 12px; }
.settings-grid, .account-grid { gap: 12px !important; }
#view-settings .card { box-shadow: none !important; }
#view-settings .card + .card { margin-top: 12px; }

@media (min-width: 1000px) {
  .english-grid { grid-template-columns: 300px minmax(0, 1fr) !important; gap: 18px !important; }
  #view-practice .practice-main-grid, #view-practice .practice-workspace { grid-template-columns: minmax(300px, .72fr) minmax(460px, 1.28fr) !important; }
  #view-settings { max-width: 980px !important; }
  #navList.nav-list { display: grid !important; grid-template-columns: 1fr !important; gap: 5px !important; width: 100% !important; max-width: none !important; }
  #navList .nav-item { width: 100% !important; min-height: 48px !important; padding: 8px 12px !important; display: flex !important; flex-direction: row !important; justify-content: flex-start !important; gap: 11px !important; }
  #navList .nav-item .tab-ico { flex: 0 0 30px !important; width: 30px !important; height: 30px !important; }
  #navList .nav-item .tab-label { display: inline !important; font-size: 14px !important; }
  .smart-back-fab { right: 24px !important; bottom: 88px !important; width: 46px !important; height: 46px !important; }
}

@media (max-width: 999px) {
  .resources-first-guide-grid, .home-quick-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .english-grid { grid-template-columns: 1fr !important; }
  .practice-first-guide-steps { padding-left: 18px !important; }
}

@media (max-width: 390px) {
  .resources-first-guide-grid, .home-quick-grid { grid-template-columns: 1fr !important; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .view.active { animation: none; }
}

/* v124: less chrome, clearer target action, one centered mobile axis. */
.home-hero-dashboard .home-goal-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 7px 13px !important;
  border: 1px solid rgba(255,255,255,.32) !important;
  border-radius: 999px !important;
  color: #fff !important;
  background: rgba(255,255,255,.12) !important;
  text-decoration: none !important;
  white-space: nowrap;
  backdrop-filter: blur(10px);
}
.home-hero-dashboard .home-goal-link:active { background: rgba(255,255,255,.22) !important; }

@media (max-width: 999px) {
  .view.active > * {
    box-sizing: border-box;
    max-width: 100%;
    margin-inline: auto;
  }
  .lecture-retention-modal {
    place-items: center !important;
    padding: max(12px, env(safe-area-inset-top)) 12px max(12px, env(safe-area-inset-bottom)) !important;
  }
  .lecture-retention-card {
    box-sizing: border-box !important;
    width: min(720px, 100%) !important;
    max-height: calc(100dvh - 24px) !important;
    margin: auto !important;
    padding: 16px !important;
  }
  .lecture-library-item,
  .lecture-version-item {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    align-items: center !important;
    gap: 12px !important;
    padding: 14px 0 !important;
  }
  .lecture-library-item > button,
  .lecture-version-item > button {
    width: auto !important;
    min-width: 64px;
    margin: 0 !important;
  }
  .english-tabs.mini-program-tabs {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
    gap: 6px !important;
    overflow: visible !important;
  }
  .english-tabs.mini-program-tabs .english-tab-sep { display: none !important; }
  .english-tabs.mini-program-tabs .english-tab {
    width: 100% !important;
    min-width: 0 !important;
    padding-inline: 6px !important;
    text-align: center;
  }
}

@media (max-width: 420px) {
  .lecture-library-item,
  .lecture-version-item { grid-template-columns: minmax(0, 1fr) !important; }
  .lecture-library-item > button,
  .lecture-version-item > button { justify-self: start; min-width: 82px !important; }
}

/* Hidden page chrome must not keep the mobile topbar spacer. */
@media (max-width: 999px) {
  .app-shell.topbar-hidden {
    padding-top: env(safe-area-inset-top) !important;
  }

  .app-shell.topbar-hidden .topbar,
  .topbar.is-hidden {
    display: none !important;
  }

  .app-shell.topbar-hidden .main {
    padding-top: 8px !important;
  }
}

/* ===== Phase 2: learning journey ===== */
.ui-journey-home > .home-weekly-goal { margin: 0 !important; box-shadow: none !important; }
.ui-journey-home .home-progress-summary .home-weekly-goal { margin: 0 0 12px !important; background: var(--ui-primary-soft) !important; box-shadow: none !important; }
.ui-journey-home .home-hero-grid { grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr) !important; gap: clamp(18px, 4vw, 52px) !important; align-items: center; }
.ui-journey-home .home-hero-copy > p { max-width: 660px; font-size: 15px; }
.ui-journey-home .home-resume-card {
  border: 1px solid rgba(255,255,255,.78) !important;
  background: rgba(255,255,255,.94) !important;
  backdrop-filter: blur(16px);
  box-shadow: 0 18px 44px rgba(4,35,22,.20) !important;
}
.ui-journey-home .home-resume-card .next-eyebrow { color: var(--ui-primary) !important; }
.ui-journey-home .home-resume-card b { color: #10271c !important; }
.ui-journey-home .home-resume-card .next-lesson,
.ui-journey-home .home-resume-card .home-next-caption,
.ui-journey-home .home-resume-card .home-next-meta { color: #566a60 !important; }
.ui-journey-home .home-resume-card .home-progress-bar { background: #dce9e1 !important; }
.ui-journey-home .home-rescue-rule { display: grid; grid-template-columns: auto 1fr; gap: 8px; align-items: start; }
.ui-journey-home .home-rescue-rule b { white-space: nowrap; }
.ui-journey-home .home-focus-panel, .ui-journey-home #homeRadarPanel { border-radius: 18px !important; background: var(--ui-surface-soft) !important; }
.ui-journey-home .home-dashboard-strip { border-radius: 18px !important; overflow: clip; }

.ui-course-library { display: grid !important; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px !important; }
.ui-course-library .course-card { min-height: 190px; align-items: flex-start !important; }
.ui-course-library .course-card.expanded { grid-column: 1 / -1; }
.ui-course-library .course-card-with-picker .course-main { display: flex; min-height: 100%; flex-direction: column; }
.ui-course-library .course-action-row { margin-top: auto; padding-top: 16px; }
.ui-course-library .course-knowledge-panel { margin-top: 16px; border-top: 1px solid var(--ui-line); padding-top: 14px; }
.course-knowledge-lesson, .lesson-item { min-height: 46px; }

.ui-reading-mode { max-width: 1180px !important; }
.ui-context-hero { min-height: 160px; }
.ui-context-hero h1 { font-size: clamp(24px, 3.6vw, 38px) !important; }
.ui-lesson-workbench { background: transparent !important; border: 0 !important; box-shadow: none !important; padding-inline: 0 !important; }
.ui-lesson-workbench > .tabs { width: fit-content; max-width: 100%; margin-inline: auto !important; border: 1px solid rgba(22,115,74,.13); border-radius: 16px; }
.ui-reading-mode .lecture-top, .ui-reading-mode .lecture-level-panel, .ui-reading-mode .lecture-retention-panel { max-width: 920px; margin-inline: auto !important; }
.ui-reading-mode .lecture-level-panel { padding: 12px 14px !important; box-shadow: none !important; }
.ui-reading-mode .level-tabs { gap: 5px !important; }
.ui-reading-mode .level-pill { min-height: 38px; padding: 7px 13px !important; }
.ui-reading-mode .lecture-paper { box-shadow: 0 20px 56px rgba(17,57,36,.08) !important; }
.ui-reading-mode .lecture-retention-panel { margin-top: 16px !important; border-radius: 18px !important; }

@media (max-width: 999px) {
  .ui-journey-home .home-hero-grid { grid-template-columns: 1fr !important; gap: 14px !important; }
  .ui-course-library { grid-template-columns: 1fr !important; }
  .ui-course-library .course-card.expanded { grid-column: auto; }
  .ui-context-hero { min-height: 0; }
  .ui-context-hero p { display: none; }
  .ui-reading-mode .lecture-top { align-items: flex-start; }
}

@media (max-width: 600px) {
  .ui-journey-home .home-rescue-rule { display: block; }
  .ui-journey-home .home-rescue-rule b { display: block; margin-bottom: 5px; }
  .ui-journey-home .home-mid-grid { display: block !important; }
  .ui-journey-home .home-mid-grid > * + * { margin-top: 10px; }
  .ui-course-library .course-card { min-height: 0; }
}

/* ===== Phase 3: cross-module learning loop ===== */
.ui-context-bridge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 12px 0;
  padding: 11px 12px 11px 16px;
  border: 1px solid rgba(22,115,74,.14);
  border-radius: 16px;
  background: rgba(255,255,255,.82);
  box-shadow: 0 8px 24px rgba(17,57,36,.05);
  backdrop-filter: blur(12px);
}
.ui-context-bridge > div { min-width: 0; display: grid; gap: 2px; }
.ui-context-bridge > div span { color: var(--ui-primary); font-size: 10px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.ui-context-bridge > div b { overflow: hidden; color: var(--ui-ink); font-size: 13px; text-overflow: ellipsis; white-space: nowrap; }
.ui-context-bridge nav { display: flex; flex: 0 0 auto; gap: 7px; }
.ui-context-bridge button {
  min-height: 36px;
  padding: 7px 11px;
  border: 1px solid rgba(22,115,74,.16);
  border-radius: 10px;
  background: var(--ui-primary-soft);
  color: var(--ui-primary-strong);
  font-size: 12px;
  font-weight: 850;
}
.ui-context-bridge button:first-child { background: var(--ui-primary); color: #fff; }
.home-rescue-modal-card .ui-context-bridge { margin-inline: 0; }
.ui-rescue-transfer { margin-left: auto !important; color: var(--ui-primary-strong) !important; background: var(--ui-primary-soft) !important; }

@media (max-width: 620px) {
  .ui-context-bridge { align-items: stretch; flex-direction: column; gap: 9px; padding: 11px; }
  .ui-context-bridge nav { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); }
  .ui-context-bridge button { min-width: 0; }
}

/* Focus each training module on its primary activity. */
.ui-task-flow .practice-first-guide, .ui-library-flow .resources-first-guide { margin-bottom: 10px !important; }
.ui-task-flow textarea, .ui-memory-flow textarea, .ui-language-flow textarea { line-height: 1.65; }
.ui-task-flow .practice-mode-tabs, .ui-memory-flow .recite-step-tabs, .ui-language-flow .english-tabs { scrollbar-width: none; }
.ui-memory-flow .recite-steps-panel { border-color: rgba(22,115,74,.15) !important; }
.ui-memory-flow .recite-step-tabs { padding: 4px; border-radius: 14px; background: var(--ui-primary-soft); }
.ui-language-flow .english-hero { margin-bottom: 10px !important; }
.ui-language-flow .english-control-card { position: sticky; top: calc(var(--ui-topbar) + 14px); }
.ui-language-flow .word-stage-card { min-height: 390px; display: grid; align-content: center; }

@media (max-width: 999px) {
  .ui-language-flow .english-control-card { position: static; }
  .ui-language-flow .word-stage-card { min-height: 320px; }
}

/* Keep the selected lecture depth legible after the shared pill refresh. */
.level-pill.active,
.ui-reading-mode .level-pill.active {
  border-color: var(--ui-primary) !important;
  background: var(--ui-primary) !important;
  color: #fff !important;
  box-shadow: 0 7px 18px rgba(22,115,74,.18);
}

/* Final cascade guard: legacy page-specific chrome hiding must never win. */
.app-shell.topbar-hidden .topbar,
.topbar.is-hidden { display: flex !important; }
@media (max-width: 999px) {
  .app-shell.topbar-hidden,
  .app-shell { padding-top: calc(58px + env(safe-area-inset-top)) !important; }
  .app-shell.topbar-hidden .main { padding-top: 12px !important; }
}