.tlbd-app,
.tlbd-app * {
  box-sizing: border-box;
}

.tlbd-app {
  --tlbd-orange: #f97316;
  --tlbd-orange-2: #fb923c;
  --tlbd-orange-dark: #9a3412;
  --tlbd-bg: #fff7ed;
  --tlbd-shell: #ffffff;
  --tlbd-card: #fffaf4;
  --tlbd-result: #ffffff;
  --tlbd-text: #1c1917;
  --tlbd-muted: #6b4f3f;
  --tlbd-border: rgba(249, 115, 22, .22);
  --tlbd-input: #ffffff;
  --tlbd-shadow: rgba(154, 52, 18, .16);
  width: 100%;
  max-width: 100%;
  padding-inline: clamp(12px, 2vw, 20px);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light dark;
  overflow-anchor: none;
  scrollbar-gutter: stable;
}

@media (prefers-color-scheme: dark) {
  .tlbd-app {
    --tlbd-bg: #160f0a;
    --tlbd-shell: #21160f;
    --tlbd-card: rgba(255, 247, 237, .055);
    --tlbd-result: #fffaf4;
    --tlbd-text: #fff7ed;
    --tlbd-muted: #fed7aa;
    --tlbd-border: rgba(251, 146, 60, .28);
    --tlbd-input: #120c08;
    --tlbd-shadow: rgba(0, 0, 0, .34);
  }
}

.tlbd-shell {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 28px;
  border-radius: 28px;
  background:
    radial-gradient(circle at top left, rgba(251, 146, 60, .24), transparent 34%),
    linear-gradient(145deg, var(--tlbd-shell) 0%, var(--tlbd-bg) 100%);
  border: 1px solid var(--tlbd-border);
  box-shadow: 0 18px 46px var(--tlbd-shadow);
  color: var(--tlbd-text);
  overflow-anchor: none;
}

.tlbd-shell,
.tlbd-section,
.tlbd-form-area,
.tlbd-select-row,
.tlbd-result,
.tlbd-result-card {
  max-width: 100%;
}

.tlbd-shell,
.tlbd-section,
.tlbd-result {
  overflow-anchor: none;
}

.tlbd-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 0 0 24px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--tlbd-border);
}

.tlbd-logo-box {
  width: 82px;
  height: 82px;
  border-radius: 22px;
  background: #fff;
  padding: 10px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(249, 115, 22, .22);
  box-shadow: 0 10px 24px rgba(249, 115, 22, .16);
}

.tlbd-logo-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.tlbd-header h1 {
  margin: 0 0 8px;
  color: var(--tlbd-text);
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -.035em;
}

.tlbd-header p {
  margin: 0;
  max-width: 720px;
  color: var(--tlbd-muted);
  font-size: 15px;
  line-height: 1.65;
}

.tlbd-sections {
  display: grid;
  gap: 18px;
}

.tlbd-section {
  padding: 22px;
  border-radius: 22px;
  background: var(--tlbd-card);
  border: 1px solid var(--tlbd-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
}

.tlbd-section h2 {
  margin: 0 0 14px;
  color: var(--tlbd-text);
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -.02em;
}

.tlbd-label {
  display: block;
  margin: 0 0 8px;
  color: var(--tlbd-muted);
  font-weight: 800;
  font-size: 14px;
}

.tlbd-form-area {
  display: grid;
  gap: 10px;
}

.tlbd-select-row {
  position: relative;
}

.tlbd-select {
  width: 100%;
  min-height: 50px;
  appearance: none;
  border: 1px solid var(--tlbd-border);
  border-radius: 15px;
  padding: 0 46px 0 16px;
  background: var(--tlbd-input);
  color: var(--tlbd-text);
  font-size: 15px;
  outline: none;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(154, 52, 18, .06);
}

.tlbd-select-row:after {
  content: "⌄";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--tlbd-orange);
  font-size: 19px;
  font-weight: 900;
}

.tlbd-select:focus {
  border-color: var(--tlbd-orange);
  box-shadow: 0 0 0 4px rgba(249, 115, 22, .18);
}

.tlbd-empty-text {
  margin: 12px 0 0;
  color: var(--tlbd-muted);
  font-size: 14px;
  line-height: 1.6;
}

.tlbd-result {
  margin-top: 16px;
}

.tlbd-result-card {
  padding: 18px;
  border-radius: 18px;
  background: var(--tlbd-result);
  color: #1c1917;
  border: 1px solid rgba(249, 115, 22, .2);
  box-shadow: 0 12px 28px rgba(154, 52, 18, .10);
}

.tlbd-result-card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  line-height: 1.3;
  color: #111;
  font-weight: 900;
}

.tlbd-description {
  color: #40312a;
  font-size: 14px;
  line-height: 1.75;
}

.tlbd-description p:first-child,
.tlbd-description div:first-child {
  margin-top: 0;
}

.tlbd-description p:last-child,
.tlbd-description div:last-child {
  margin-bottom: 0;
}

.tlbd-description a {
  color: #c2410c;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tlbd-description img {
  max-width: 100%;
  height: auto;
  border-radius: 14px;
  display: block;
  margin: 12px 0;
  border: 1px solid rgba(249, 115, 22, .18);
}

.tlbd-download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 16px;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--tlbd-orange-dark), var(--tlbd-orange), var(--tlbd-orange-2));
  color: #fff !important;
  font-weight: 900;
  font-size: 14px;
  text-decoration: none !important;
  box-shadow: 0 12px 25px rgba(249, 115, 22, .28);
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
}

.tlbd-download-button:hover {
  transform: translateY(-1px);
  filter: brightness(1.06);
  box-shadow: 0 15px 30px rgba(249, 115, 22, .34);
}

.tlbd-download-button.tlbd-disabled {
  opacity: .58;
  cursor: not-allowed;
  filter: grayscale(.1);
}

.tlbd-link-hint {
  margin: 10px 0 0;
  color: #8a6a5a;
  font-size: 12px;
}

@media (max-width: 640px) {
  .tlbd-shell {
    padding: 18px;
    border-radius: 20px;
  }

  .tlbd-header {
    align-items: flex-start;
    gap: 14px;
  }

  .tlbd-logo-box {
    width: 64px;
    height: 64px;
    border-radius: 18px;
  }

  .tlbd-section {
    padding: 18px;
    border-radius: 18px;
  }
}

/* Frontend dropdown micro-interactions and adaptive frame stability v1.0.8 */
.tlbd-section,
.tlbd-select-row,
.tlbd-result,
.tlbd-result-card {
  will-change: transform, opacity;
}

.tlbd-section-resizing {
  transition: height .24s cubic-bezier(.16, 1, .3, 1);
}

.tlbd-select-row {
  position: relative;
  transform-origin: top center;
  isolation: isolate;
}

.tlbd-select-row::before {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 18px;
  pointer-events: none;
  z-index: -1;
  opacity: 0;
  background:
    radial-gradient(circle at var(--tlbd-click-x, 84%) 50%, rgba(251, 146, 60, .34), transparent 28%),
    linear-gradient(135deg, rgba(249, 115, 22, .22), rgba(251, 146, 60, .04));
  transform: scale(.985);
}

.tlbd-select-row.tlbd-select-clicked::before {
  animation: tlbd-dropdown-click-glow .72s cubic-bezier(.16, 1, .3, 1);
}

.tlbd-select-row.tlbd-select-open::after {
  transform: translateY(-50%) rotate(180deg) scale(1.08);
}

.tlbd-select {
  transition:
    border-color .22s ease,
    box-shadow .22s ease,
    transform .22s cubic-bezier(.16, 1, .3, 1),
    background-color .22s ease,
    filter .22s ease;
}

.tlbd-select:hover {
  border-color: rgba(249, 115, 22, .48);
  box-shadow: 0 10px 24px rgba(154, 52, 18, .10);
  transform: translateY(-1px);
}

.tlbd-select-row.tlbd-select-clicked .tlbd-select {
  transform: translateY(-1px) scale(1.006);
  border-color: var(--tlbd-orange);
  box-shadow:
    0 0 0 4px rgba(249, 115, 22, .18),
    0 12px 28px rgba(154, 52, 18, .15);
}

.tlbd-select-row.tlbd-select-changed .tlbd-select {
  animation: tlbd-dropdown-confirm .55s cubic-bezier(.16, 1, .3, 1);
}

.tlbd-select-row:after {
  transition:
    transform .28s cubic-bezier(.16, 1, .3, 1),
    color .22s ease,
    text-shadow .22s ease;
}

.tlbd-select-row.tlbd-select-open:after,
.tlbd-select-row.tlbd-select-clicked:after,
.tlbd-select-row.tlbd-select-changed:after {
  color: var(--tlbd-orange-2);
  text-shadow: 0 0 14px rgba(249, 115, 22, .50);
}

.tlbd-select-enter {
  animation: tlbd-dropdown-enter .42s cubic-bezier(.16, 1, .3, 1) both;
}

.tlbd-select-exit {
  animation: tlbd-dropdown-exit .18s ease both;
}

.tlbd-result-show {
  animation: tlbd-result-wrap-in .30s ease both;
}

.tlbd-result-card {
  animation: tlbd-card-pop-in .50s cubic-bezier(.16, 1, .3, 1) both;
  overflow: hidden;
  position: relative;
}

.tlbd-result-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(120deg, transparent 0%, rgba(249, 115, 22, .12) 44%, rgba(251, 146, 60, .20) 50%, transparent 58%);
  transform: translateX(-120%);
  animation: tlbd-card-shine .88s ease .08s both;
}

.tlbd-download-button {
  position: relative;
  overflow: hidden;
}

.tlbd-download-button::after {
  content: "";
  position: absolute;
  top: -45%;
  bottom: -45%;
  width: 48px;
  left: -65px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .52), transparent);
  transform: skewX(-18deg);
  transition: left .55s ease;
}

.tlbd-download-button:hover::after {
  left: calc(100% + 70px);
}

@keyframes tlbd-dropdown-click-glow {
  0% {
    opacity: 0;
    transform: scale(.982);
    filter: blur(0);
  }
  38% {
    opacity: 1;
    transform: scale(1.015);
    filter: blur(.2px);
  }
  100% {
    opacity: 0;
    transform: scale(1.045);
    filter: blur(2px);
  }
}

@keyframes tlbd-dropdown-confirm {
  0% { transform: translateY(-1px) scale(1); }
  44% { transform: translateY(-2px) scale(1.012); }
  100% { transform: translateY(0) scale(1); }
}

@keyframes tlbd-dropdown-enter {
  0% {
    opacity: 0;
    transform: translateY(-10px) scale(.975);
    filter: blur(4px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

@keyframes tlbd-dropdown-exit {
  0% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  100% {
    opacity: 0;
    transform: translateY(-8px) scale(.982);
  }
}

@keyframes tlbd-result-wrap-in {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes tlbd-card-pop-in {
  0% {
    opacity: 0;
    transform: translateY(14px) scale(.975);
    box-shadow: 0 6px 16px rgba(154, 52, 18, .05);
  }
  58% {
    opacity: 1;
    transform: translateY(-2px) scale(1.008);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes tlbd-card-shine {
  0% {
    opacity: 0;
    transform: translateX(-120%);
  }
  32% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(120%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tlbd-select-row,
  .tlbd-select-row::before,
  .tlbd-select,
  .tlbd-result,
  .tlbd-result-card,
  .tlbd-result-card::before,
  .tlbd-download-button,
  .tlbd-download-button::after {
    animation: none !important;
    transition: none !important;
  }
}


@media (min-width: 1200px) {
  .tlbd-shell {
    max-width: 940px;
  }
}

@media (max-width: 640px) {
  .tlbd-app {
    padding-inline: 10px;
  }

  .tlbd-shell {
    padding: 20px 16px;
    border-radius: 22px;
  }

  .tlbd-section {
    padding: 18px 14px;
    border-radius: 18px;
  }
}