:root {
  --bg: #fff7e6;
  --panel: rgba(255, 255, 255, 0.82);
  --ink: #1f2328;
  --muted: #5b6570;
  --line: rgba(31, 35, 40, 0.12);
  --saffron: #ff9f1c;
  --saffron2: #ffb74d;
  --green: #2f7d4a;
  --shadow: 0 14px 36px rgba(31, 35, 40, 0.14);
  --shadow2: 0 10px 26px rgba(31, 35, 40, 0.12);
  --radius: 18px;
  --radius2: 24px;
  --mono:
    ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;
  --sans:
    "DM Sans", Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(
      1200px 600px at 10% 0%,
      rgba(255, 159, 28, 0.18),
      transparent 60%
    ),
    radial-gradient(
      900px 520px at 90% 10%,
      rgba(255, 183, 77, 0.2),
      transparent 55%
    ),
    linear-gradient(180deg, #fffaf0, var(--bg));
}
a {
  color: inherit;
  text-decoration: none;
}
.wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px;
}
.mono {
  font-family: var(--mono);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
  background: linear-gradient(
    180deg,
    rgba(255, 247, 230, 0.88),
    rgba(255, 247, 230, 0.62)
  );
  border-bottom: 1px solid var(--line);
}
.topbar .row {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px;
}
.brand {
  display: flex;
  gap: 10px;
  align-items: center;
  min-width: 240px;
}
.logo {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: conic-gradient(from 210deg, var(--saffron), var(--saffron2));
  box-shadow: var(--shadow2);
  position: relative;
  flex: 0 0 auto;
}
.logo:after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(31, 35, 40, 0.08);
}
.brand h1 {
  font-size: 15px;
  margin: 0;
  letter-spacing: 0.2px;
}
.brand p {
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}

.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.btn {
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.75);
  color: var(--ink);
  border-radius: 14px;
  padding: 10px 12px;
  font-weight: 900;
  font-size: 13px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  cursor: pointer;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
  box-shadow: 0 8px 18px rgba(31, 35, 40, 0.08);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.9);
}
.btn:active {
  transform: translateY(0) scale(0.99);
}
.btn.primary {
  background: linear-gradient(
    180deg,
    rgba(255, 159, 28, 0.98),
    rgba(255, 183, 77, 0.98)
  );
  border-color: rgba(217, 119, 6, 0.35);
  color: #1a140c;
}
.btn.green {
  background: rgba(47, 125, 74, 0.12);
  border-color: rgba(47, 125, 74, 0.28);
}

.input,
.select {
  width: 100%;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid rgba(31, 35, 40, 0.14);
  background: rgba(255, 255, 255, 0.82);
  outline: none;
  font-weight: 800;
}
.input:focus,
.select:focus {
  box-shadow: 0 0 0 4px rgba(255, 159, 28, 0.16);
  border-color: rgba(217, 119, 6, 0.35);
}

.card {
  background: var(--panel);
  border: 1px solid rgba(31, 35, 40, 0.1);
  border-radius: var(--radius2);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero {
  padding: 18px;
  margin-top: 14px;
}
.heroGrid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 14px;
  align-items: stretch;
}
.badge {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  font-weight: 900;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.75);
}
.badge i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--saffron);
  box-shadow: 0 0 0 4px rgba(255, 159, 28, 0.18);
}
.heroTitle {
  margin: 12px 0 8px;
  font-size: 30px;
  line-height: 1.08;
  letter-spacing: -0.6px;
}
.heroSub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  max-width: 75ch;
  line-height: 1.5;
}
.heroBtns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}
.heroAside {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.mini {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(31, 35, 40, 0.1);
  border-radius: var(--radius);
  padding: 12px;
}
.mini h3 {
  margin: 0 0 6px;
  font-size: 13px;
}
.mini p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}
.miniBtns {
  margin-top: 6px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.mainGrid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 14px;
  align-items: start;
  margin-top: 14px;
}
.controls {
  padding: 14px;
}
.row2 {
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 10px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.label {
  font-size: 12px;
  color: var(--muted);
  font-weight: 900;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.chip {
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  padding: 8px 10px;
  font-size: 12px;
  font-weight: 900;
  cursor: pointer;
  user-select: none;
  transition:
    transform 0.12s ease,
    background 0.12s ease;
}
.chip:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.9);
}
.chip[aria-pressed="true"] {
  background: rgba(255, 159, 28, 0.22);
  border-color: rgba(217, 119, 6, 0.28);
}
.statusRow {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
  align-items: center;
}

.results {
  padding: 14px;
}
.resultsHead {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.resultsHead h2 {
  margin: 0;
  font-size: 15px;
}
.hint {
  font-size: 12px;
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.item {
  border-radius: var(--radius2);
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.78);
  overflow: hidden;
  box-shadow: 0 10px 22px rgba(31, 35, 40, 0.1);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
  display: flex;
  flex-direction: column;
  min-height: 220px;
}
.item:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(31, 35, 40, 0.14);
}
.thumb {
  height: 96px;
  background: linear-gradient(
    135deg,
    rgba(255, 159, 28, 0.55),
    rgba(255, 183, 77, 0.25)
  );
  position: relative;
}
.pBody {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.pTitle {
  margin: 0;
  font-size: 14px;
  letter-spacing: -0.2px;
  line-height: 1.2;
}
.meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.tag {
  font-size: 11px;
  font-weight: 900;
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.75);
  border-radius: 999px;
  padding: 5px 8px;
  color: #2b2b2b;
}
.pDesc {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}
.pBtns {
  margin-top: auto;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.side {
  padding: 14px;
}
.stat {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border-radius: 18px;
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.75);
}
.stat b {
  font-size: 13px;
}
.stat span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-top: 2px;
}

.labList {
  margin-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.labRow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px;
  border-radius: 18px;
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  transition:
    transform 0.12s ease,
    background 0.12s ease;
  user-select: none;
}
.labRow:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.9);
}
.labRow b {
  font-size: 13px;
}
.labRow span {
  font-size: 12px;
  color: var(--muted);
  font-weight: 900;
}

.gqWrap {
  position: relative;
}
.suggest {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: min(580px, 90vw);
  max-height: 340px;
  overflow: auto;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(31, 35, 40, 0.14);
  border-radius: 18px;
  box-shadow: 0 18px 44px rgba(31, 35, 40, 0.18);
  padding: 8px;
  z-index: 80;
}
.sItem {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px;
  border-radius: 14px;
  border: 1px solid transparent;
  cursor: pointer;
}
.sItem:hover {
  background: rgba(255, 159, 28, 0.14);
}
.sItem[aria-selected="true"] {
  background: rgba(255, 159, 28, 0.18);
  border-color: rgba(217, 119, 6, 0.22);
}
.sType {
  font-size: 11px;
  font-weight: 900;
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.85);
  border-radius: 999px;
  padding: 4px 8px;
  white-space: nowrap;
  flex: 0 0 auto;
  margin-top: 2px;
}
.sMain {
  min-width: 0;
}
.sMain b {
  display: block;
  font-size: 13px;
}
.sMain span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
  line-height: 1.35;
}
.sFoot {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
}
.sHint {
  font-size: 11px;
  color: var(--muted);
}
.kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 3px 6px;
  border-radius: 10px;
  border: 1px solid rgba(31, 35, 40, 0.14);
  background: rgba(255, 255, 255, 0.72);
}

.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 18px;
  z-index: 60;
}
.backdrop.open {
  display: flex;
}
.modal {
  width: min(980px, 100%);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 26px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  overflow: hidden;
}
.modalTop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(31, 35, 40, 0.1);
  background: linear-gradient(
    180deg,
    rgba(255, 247, 230, 0.85),
    rgba(255, 247, 230, 0.55)
  );
}
.modalTop strong {
  font-size: 13px;
}
.closeX {
  border: none;
  background: transparent;
  font-size: 18px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 12px;
}
.closeX:hover {
  background: rgba(255, 255, 255, 0.75);
}
.modalBody {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 0;
}
.modalMain {
  padding: 14px;
}
.modalAside {
  padding: 14px;
  border-left: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 247, 230, 0.45);
}
.kv {
  padding: 10px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(31, 35, 40, 0.1);
  border-radius: 18px;
}
.kv b {
  display: block;
  font-size: 12px;
}
.kv span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 2px;
}
.kvs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}
.modalActions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toast {
  position: fixed;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(31, 35, 40, 0.92);
  color: #fff;
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 12px;
  box-shadow: 0 16px 30px rgba(0, 0, 0, 0.24);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
  z-index: 90;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.bar {
  height: 10px;
  border-radius: 999px;
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.7);
  overflow: hidden;
}
.bar > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(
    90deg,
    rgba(255, 159, 28, 0.95),
    rgba(255, 183, 77, 0.95)
  );
  transition: width 0.2s ease;
}

/* Featured */
.featuredBox {
  margin-top: 12px;
  padding: 12px;
  border-radius: 22px;
  border: 1px solid rgba(217, 119, 6, 0.22);
  background: linear-gradient(
    180deg,
    rgba(255, 159, 28, 0.14),
    rgba(255, 255, 255, 0.65)
  );
  box-shadow: 0 14px 30px rgba(255, 159, 28, 0.1);
}
.featuredHead {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.featuredHead h3 {
  margin: 0;
  font-size: 14px;
  letter-spacing: -0.2px;
}
.featuredGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}
.fCard {
  border-radius: 18px;
  border: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.78);
  padding: 10px;
  box-shadow: 0 10px 22px rgba(31, 35, 40, 0.08);
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
  cursor: pointer;
  user-select: none;
}
.fCard:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 34px rgba(31, 35, 40, 0.12);
}
.fTitle {
  margin: 0;
  font-size: 13px;
  line-height: 1.25;
  font-weight: 1000;
}
.fMeta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}
.fMeta .tag {
  padding: 4px 8px;
}
.fDesc {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

/* Practice Lab */
.labSection {
  margin-top: 14px;
}
.labHead {
  padding: 14px;
  border-bottom: 1px solid rgba(31, 35, 40, 0.1);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.labHead h2 {
  margin: 0;
  font-size: 15px;
  letter-spacing: -0.2px;
}
.labHead p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
  max-width: 90ch;
}

.embedWrap {
  border-top: 1px solid rgba(31, 35, 40, 0.08);
  background: rgba(255, 255, 255, 0.55);
}
.embedTop {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding: 12px;
  border-bottom: 1px solid rgba(31, 35, 40, 0.1);
  background: rgba(255, 255, 255, 0.66);
}
.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tabBtn {
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 1000;
  font-size: 12px;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.tabBtn.on {
  background: rgba(255, 159, 28, 0.22);
  border-color: rgba(217, 119, 6, 0.28);
  box-shadow: 0 10px 24px rgba(255, 159, 28, 0.14);
}
.embedActions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}
.embedFrame {
  width: 100%;
  height: 680px;
  border: 0;
  display: none;
  background: transparent;
}
.embedFrame.show {
  display: block;
}

/* Floating Lab Button */
.fabLab {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 120;
  border: 1px solid rgba(31, 35, 40, 0.14);
  background: linear-gradient(
    180deg,
    rgba(255, 159, 28, 0.98),
    rgba(255, 183, 77, 0.98)
  );
  color: #1a140c;
  font-weight: 1000;
  border-radius: 999px;
  padding: 12px 14px;
  box-shadow: 0 18px 36px rgba(31, 35, 40, 0.18);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  -webkit-tap-highlight-color: transparent;
}
.fabLab:active {
  transform: translateY(1px) scale(0.99);
}
.fabLab small {
  font-weight: 900;
  opacity: 0.85;
  font-size: 12px;
}
@keyframes fabPulse {
  0%,
  100% {
    box-shadow: 0 18px 36px rgba(31, 35, 40, 0.18);
  }
  50% {
    box-shadow: 0 18px 46px rgba(255, 159, 28, 0.26);
  }
}
.fabLab.pulse {
  animation: fabPulse 1.4s ease-in-out infinite;
}
@keyframes labGlow {
  0% {
    box-shadow: 0 0 0 rgba(255, 159, 28, 0);
  }
  40% {
    box-shadow: 0 0 0 10px rgba(255, 159, 28, 0.16);
  }
  100% {
    box-shadow: 0 0 0 rgba(255, 159, 28, 0);
  }
}
#ppLab.labGlow {
  animation: labGlow 900ms ease-out;
  border-color: rgba(217, 119, 6, 0.35);
}

/* Voice UI */
.voiceBtn {
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  padding: 10px 12px;
  font-weight: 1000;
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  box-shadow: 0 8px 18px rgba(31, 35, 40, 0.08);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}
.voiceBtn:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 26px rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.9);
}
.voiceBtn:active {
  transform: translateY(0) scale(0.99);
}
.voiceBtn[aria-pressed="true"] {
  background: rgba(255, 159, 28, 0.22);
  border-color: rgba(217, 119, 6, 0.28);
}
.voicePill {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(31, 35, 40, 0.12);
  background: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 900;
  color: var(--muted);
  user-select: none;
}
.voiceDot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(47, 125, 74, 0.9);
  box-shadow: 0 0 0 4px rgba(47, 125, 74, 0.14);
  opacity: 0;
}
.voicePill.on .voiceDot {
  opacity: 1;
  animation: voicePulse 1.05s ease-in-out infinite;
}
@keyframes voicePulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.35);
  }
}

mark {
  background: rgba(255, 159, 28, 0.32);
  border: 1px solid rgba(217, 119, 6, 0.16);
  padding: 0 2px;
  border-radius: 6px;
}

.footer {
  padding: 16px 2px;
  color: var(--muted);
  font-size: 12px;
}
.footerRow {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: space-between;
}

@media (max-width: 980px) {
  .heroGrid {
    grid-template-columns: 1fr;
  }
  .mainGrid {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .row2 {
    grid-template-columns: 1fr;
  }
  .modalBody {
    grid-template-columns: 1fr;
  }
  .modalAside {
    border-left: none;
    border-top: 1px solid rgba(31, 35, 40, 0.1);
  }
  .brand {
    min-width: unset;
  }
  .embedFrame {
    height: 740px;
  }
  .featuredGrid {
    grid-template-columns: 1fr;
  }
}