@font-face {
  font-family: "Pretendard";
  font-style: normal;
  font-weight: 45 920;
  font-display: swap;
  src: url("/assets/pretendard-variable.woff2?v=968mj0") format("woff2-variations");
}

:root {
  --sai-violet-700: #4536c9;
  --sai-violet-600: #5650ff;
  --sai-purple-500: #af4bff;
  --sai-ink: #171527;
  --sai-muted: #66647a;
  --sai-bg: #f5f7fd;
  --sai-surface: #ffffff;
  --sai-surface-soft: #f0eeff;
  --sai-lavender: #e9e6ff;
  --sai-line: #e7e5f1;
  --sai-line-strong: #d6d1ff;
  --sai-line-hover: #bcb4ff;
  --sai-focus: #cabdff;
  --sai-success: #23845d;
  --sai-success-ink: #175c43;
  --sai-success-soft: #eaf9f3;
  --sai-success-line: #b9e5d4;
  --sai-warning: #b66a00;
  --sai-danger: #b62f4b;
  --sai-danger-soft: #efd3d9;
  --sai-star: #ffc83d;
  --sai-star-empty: #d8d7e2;
  --sai-guide: #ffb52a;
  --sai-guide-ink: #6b4a00;
  --sai-guide-soft: #fff5cf;
  --sai-gradient: linear-gradient(135deg, var(--sai-violet-600), var(--sai-purple-500));
  --sai-shadow-sm: 0 7px 20px rgba(55, 48, 120, 0.09);
  --sai-shadow-md: 0 18px 50px rgba(55, 48, 120, 0.14);
  --sai-radius-sm: 14px;
  --sai-radius-md: 22px;
  --sai-radius-lg: 32px;
  --sai-motion-fast: 180ms;
  --sai-motion-base: 240ms;
  --sai-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

.sai-lab {
  color: var(--sai-ink);
  background: var(--sai-bg);
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", sans-serif;
}

.sai-lab *,
.sai-lab *::before,
.sai-lab *::after {
  box-sizing: border-box;
}

.sai-lab-shell {
  width: min(1180px, 100%);
  margin: 0 auto;
  padding: 32px 24px 72px;
}

.sai-lab-header {
  position: sticky;
  z-index: 50;
  top: 0;
  display: flex;
  min-height: 72px;
  padding: 10px max(20px, env(safe-area-inset-left));
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--sai-line);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 4px 18px rgba(55, 48, 120, 0.06);
  backdrop-filter: blur(18px);
}

.sai-lab-brand {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  gap: 12px;
  color: var(--sai-ink);
  text-decoration: none;
}

.sai-lab-brand__mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 15px;
  color: #fff;
  background: var(--sai-gradient);
  box-shadow: var(--sai-shadow-sm);
  font-size: 14px;
  font-weight: 900;
}

.sai-lab-brand strong,
.sai-lab-brand small {
  display: block;
}

.sai-lab-brand strong {
  font-size: 19px;
}

.sai-lab-brand small {
  margin-top: 2px;
  color: var(--sai-muted);
  font-size: 14px;
}

.sai-lab-header__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.sai-lab-button,
.sai-lab-device-switch a {
  display: inline-flex;
  min-height: 46px;
  padding: 10px 16px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sai-line-strong);
  border-radius: var(--sai-radius-sm);
  color: var(--sai-violet-700);
  background: var(--sai-surface);
  box-shadow: var(--sai-shadow-sm);
  font: 750 17px/1.3 "Pretendard", "Noto Sans KR", sans-serif;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--sai-motion-fast) var(--sai-ease), box-shadow var(--sai-motion-fast) var(--sai-ease), border-color var(--sai-motion-fast) var(--sai-ease), background var(--sai-motion-fast) var(--sai-ease);
}

.sai-lab-button--primary {
  border-color: transparent;
  color: #fff;
  background: var(--sai-gradient);
  box-shadow: 0 12px 26px rgba(86, 80, 255, 0.24);
}

.sai-lab-button--text {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
}

.sai-lab-button--danger {
  border-color: var(--sai-danger-soft);
  color: var(--sai-danger);
}

.sai-lab-button:not(:disabled):hover,
.sai-lab-device-switch a:hover {
  transform: translateY(-2px);
  border-color: var(--sai-line-hover);
  box-shadow: var(--sai-shadow-md);
}

.sai-lab-button:not(:disabled):active,
.sai-lab-device-switch a:active {
  transform: translateY(0) scale(0.985);
}

.sai-lab-button:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.sai-lab :is(button, a, input, [tabindex]):focus-visible {
  outline: 4px solid var(--sai-focus);
  outline-offset: 3px;
}

.sai-lab-device-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--sai-line);
  border-radius: 18px;
  background: var(--sai-surface-soft);
}

.sai-lab-device-switch a {
  min-width: 118px;
  border: 0;
  border-radius: 13px;
  color: var(--sai-muted);
  background: transparent;
  box-shadow: none;
}

.sai-lab-device-switch a[aria-current="page"] {
  color: #fff;
  background: var(--sai-gradient);
  box-shadow: var(--sai-shadow-sm);
}

.sai-lab-intro {
  max-width: 820px;
  padding: 42px 0 24px;
}

.sai-lab-eyebrow {
  margin: 0 0 12px;
  color: var(--sai-violet-700);
  font-size: 17px;
  font-weight: 850;
}

.sai-lab-intro h1 {
  margin: 0;
  color: var(--sai-ink);
  font-size: clamp(38px, 5vw, 58px);
  line-height: 1.15;
  letter-spacing: -0.045em;
}

.sai-lab-intro > p:not(.sai-lab-eyebrow) {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--sai-muted);
  font-size: 21px;
  line-height: 1.7;
}

.sai-lab-note {
  display: flex;
  max-width: 820px;
  margin-top: 24px;
  padding: 18px 20px;
  gap: 14px;
  align-items: flex-start;
  border: 1px solid var(--sai-success-line);
  border-radius: var(--sai-radius-md);
  color: var(--sai-success-ink);
  background: var(--sai-success-soft);
  font-size: 17px;
  line-height: 1.65;
}

.sai-lab-note strong {
  display: block;
  margin-bottom: 2px;
}

.sai-lab-progress {
  display: grid;
  grid-template-columns: auto minmax(120px, 1fr) auto;
  gap: 18px;
  margin: 22px 0;
  padding: 20px 22px;
  align-items: center;
  border: 1px solid var(--sai-line);
  border-radius: var(--sai-radius-md);
  background: var(--sai-surface);
  box-shadow: var(--sai-shadow-sm);
}

.sai-lab-progress__count strong {
  font-size: 31px;
}

.sai-lab-progress__count span {
  margin-left: 4px;
  color: var(--sai-muted);
  font-size: 17px;
}

.sai-lab-progress__track {
  overflow: hidden;
  height: 10px;
  border-radius: 999px;
  background: var(--sai-lavender);
}

.sai-lab-progress__track span {
  display: block;
  width: var(--sai-lab-progress-value, 0%);
  height: 100%;
  border-radius: inherit;
  background: var(--sai-gradient);
  transition: width var(--sai-motion-base) var(--sai-ease);
}

.sai-lab-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.sai-lab-card {
  display: grid;
  min-height: 158px;
  padding: 22px;
  border: 1px solid var(--sai-line);
  border-radius: var(--sai-radius-md);
  color: var(--sai-ink);
  background: linear-gradient(180deg, #fff, #fafaff);
  box-shadow: var(--sai-shadow-sm);
  text-align: left;
  transition: transform var(--sai-motion-fast) var(--sai-ease), border-color var(--sai-motion-fast) var(--sai-ease), box-shadow var(--sai-motion-fast) var(--sai-ease);
}

.sai-lab-card:hover {
  transform: translateY(-2px);
  border-color: var(--sai-line-hover);
  box-shadow: var(--sai-shadow-md);
}

.sai-lab-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--sai-violet-700);
  font-size: 15px;
  font-weight: 800;
}

.sai-lab-card h2 {
  margin: 20px 0 8px;
  font-size: 24px;
  line-height: 1.35;
}

.sai-lab-card p {
  margin: 0;
  color: var(--sai-muted);
  font-size: 17px;
  line-height: 1.55;
}

.sai-lab-coach {
  padding: 24px;
  border: 1px solid var(--sai-line-strong);
  border-radius: var(--sai-radius-md);
  color: var(--sai-ink);
  background: var(--sai-surface);
  box-shadow: var(--sai-shadow-md);
}

.sai-lab-coach__step {
  margin: 0;
  color: var(--sai-violet-700);
  font-size: 16px;
  font-weight: 850;
}

.sai-lab-coach h2 {
  margin: 8px 0 12px;
  color: var(--sai-muted);
  font-size: 18px;
}

.sai-lab-coach__caption {
  margin: 0;
  font-size: clamp(23px, 2.4vw, 29px);
  font-weight: 800;
  line-height: 1.55;
  word-break: keep-all;
}

.sai-lab-coach__hint {
  margin: 18px 0 0;
  padding: 14px 16px;
  border-radius: var(--sai-radius-sm);
  color: var(--sai-guide-ink);
  background: var(--sai-guide-soft);
  font-size: 17px;
  line-height: 1.55;
}

.sai-lab-badge {
  display: inline-flex;
  min-height: 32px;
  padding: 6px 10px;
  align-items: center;
  border: 1px solid var(--sai-line-strong);
  border-radius: 999px;
  color: var(--sai-violet-700);
  background: var(--sai-surface-soft);
  font-size: 14px;
  font-weight: 800;
}

.sai-lab-feedback {
  min-height: 28px;
  margin: 16px 0 0;
  color: var(--sai-warning);
  font-size: 17px;
  font-weight: 700;
  text-align: center;
}

.sai-lab-feedback[data-tone="success"] {
  color: var(--sai-success);
}

.sai-lab-feedback[data-tone="error"] {
  color: var(--sai-danger);
}

.sai-lab-completion {
  padding: 32px 24px;
  border: 1px solid var(--sai-line);
  border-radius: var(--sai-radius-lg);
  color: var(--sai-ink);
  background: var(--sai-surface);
  box-shadow: var(--sai-shadow-md);
  text-align: center;
}

.sai-lab-completion__symbol {
  display: grid;
  width: 72px;
  height: 72px;
  margin: 0 auto;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: var(--sai-gradient);
  font-size: 34px;
  font-weight: 900;
}

.sai-lab-completion__actions {
  display: flex;
  margin-top: 22px;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

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

@media (max-width: 820px) {
  .sai-lab-header {
    align-items: flex-start;
  }

  .sai-lab-header__actions {
    flex-wrap: wrap;
  }

  .sai-lab-brand small {
    max-width: 170px;
  }

  .sai-lab-shell {
    padding: 24px 14px 56px;
  }

  .sai-lab-intro {
    padding-top: 28px;
  }

  .sai-lab-intro > p:not(.sai-lab-eyebrow) {
    font-size: 18px;
  }

  .sai-lab-progress {
    grid-template-columns: 1fr;
  }

  .sai-lab-grid {
    grid-template-columns: 1fr;
  }

  .sai-lab-device-switch a {
    min-width: 0;
    padding-inline: 12px;
    font-size: 15px;
  }
}

@media (max-width: 560px) {
  .sai-lab-header {
    position: relative;
    display: grid;
  }

  .sai-lab-header__actions,
  .sai-lab-device-switch {
    width: 100%;
  }

  .sai-lab-device-switch a {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sai-lab *,
  .sai-lab *::before,
  .sai-lab *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}