:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #101828;
  --muted: #667085;
  --line: rgba(15, 23, 42, 0.09);
  --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  --accent: #4f46e5;
  --accent-2: #06b6d4;
  --accent-3: #f97316;
  --accent-4: #22c55e;
  --accent-5: #e11d48;
  --radius: 18px;
  --radius-sm: 12px;
  --gap: 18px;
  --code-bg: #0f172a;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    linear-gradient(180deg, rgba(79, 70, 229, 0.08), transparent 18%),
    linear-gradient(90deg, rgba(6, 182, 212, 0.06), transparent 25%),
    var(--bg);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.page-shell {
  width: min(1480px, calc(100vw - 28px));
  margin: 0 auto;
  padding: 18px 0 28px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(320px, 0.9fr);
  gap: var(--gap);
  align-items: stretch;
  margin-bottom: 16px;
}

.hero-copy,
.hero-panel,
.toolbar,
.lab-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -120px -120px auto;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.18), transparent 62%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: var(--accent);
  font-weight: 700;
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(34px, 4vw, 60px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lede {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
  max-width: 520px;
}

.stat {
  padding: 14px 16px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.07), rgba(6, 182, 212, 0.03));
  border: 1px solid rgba(79, 70, 229, 0.12);
}

.stat strong {
  display: block;
  font-size: 26px;
  line-height: 1;
  margin-bottom: 6px;
}

.stat span {
  color: var(--muted);
  font-size: 13px;
}

.hero-panel {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-stack {
  display: grid;
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span,
.toolbar__label {
  font-size: 12px;
  font-weight: 700;
  color: #344054;
  letter-spacing: 0.02em;
}

.field input,
.field select,
.toolbar select,
.toolbar input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  min-height: 46px;
  padding: 0 14px;
  outline: none;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field input:focus,
.field select:focus,
.toolbar input:focus,
.toolbar select:focus,
textarea:focus {
  border-color: rgba(79, 70, 229, 0.45);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

.hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--primary {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  box-shadow: 0 10px 22px rgba(79, 70, 229, 0.2);
}

.button--ghost {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.hero-note {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  border-radius: 14px;
  background: var(--surface-2);
  color: var(--muted);
  line-height: 1.5;
}

.hero-note strong {
  color: var(--text);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 18px;
  margin-bottom: 16px;
}

.toolbar__left {
  min-width: 0;
  display: grid;
  gap: 10px;
}

.library-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid rgba(79, 70, 229, 0.12);
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.08), rgba(6, 182, 212, 0.04));
  color: #334155;
  font-size: 12px;
  font-weight: 700;
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(34, 197, 94, 0.12);
  color: #166534;
  font-size: 12px;
  font-weight: 700;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--gap);
  align-items: start;
}

.lab-card {
  padding: 16px;
  display: grid;
  gap: 14px;
  min-height: 100%;
}

.lab-card.is-hidden {
  display: none;
}

.lab-card__head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.lab-title-wrap {
  display: grid;
  gap: 6px;
}

.lab-index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.lab-card h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.25;
  letter-spacing: 0;
}

.lab-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 14px;
}

.lab-body {
  display: grid;
  gap: 12px;
}

.lab-badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.05);
  font-size: 12px;
  font-weight: 700;
  color: #475467;
}

.demo-output {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  min-height: 72px;
}

.demo-output small {
  display: block;
  color: var(--muted);
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

.preview-grid {
  display: grid;
  gap: 10px;
}

.stack {
  display: grid;
  gap: 10px;
}

.stack--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.mini-input,
.mini-textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  background: #fff;
  min-height: 42px;
}

.mini-textarea {
  min-height: 120px;
  resize: vertical;
}

.mini-button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mini-button {
  min-height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  font-weight: 700;
}

.canvas-wrap {
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fff, #f8fafc);
  padding: 10px;
}

.canvas-wrap canvas {
  width: 100%;
  height: 240px;
}

.reorder-list,
.skill-list,
.search-results,
.feed-list {
  display: grid;
  gap: 8px;
}

.draggable-item,
.result-item,
.feed-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 12px 14px;
}

.draggable-item {
  cursor: grab;
}

.draggable-item:active {
  cursor: grabbing;
}

.drag-handle {
  color: var(--muted);
  font-size: 12px;
}

.score {
  color: #0f766e;
  font-size: 12px;
  font-weight: 700;
}

.dot-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
}

.color-preview {
  border-radius: 16px;
  min-height: 124px;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
}

.dual-readout {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.readout {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.05);
  font-size: 12px;
  font-weight: 700;
}

.drag-stage {
  position: relative;
  min-height: 180px;
  border-radius: 16px;
  border: 1px dashed rgba(79, 70, 229, 0.25);
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.04), rgba(6, 182, 212, 0.02));
  overflow: hidden;
}

.drag-box {
  width: 86px;
  height: 86px;
  border-radius: 20px;
  background: linear-gradient(135deg, #4f46e5, #06b6d4);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  position: absolute;
  top: 24px;
  left: 24px;
  touch-action: none;
  user-select: none;
}

.resize-stage {
  min-height: 180px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: #fff;
  position: relative;
  overflow: hidden;
}

.resize-box {
  width: 180px;
  height: 120px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.14), rgba(239, 68, 68, 0.12));
  border: 1px solid rgba(249, 115, 22, 0.16);
  position: absolute;
  top: 20px;
  left: 20px;
  padding: 12px;
  resize: both;
  overflow: auto;
}

.qr-frame {
  display: grid;
  place-items: center;
  min-height: 200px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
}

.qr-frame > div {
  margin: 0 auto;
}

.count-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.count-card {
  padding: 14px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.08), rgba(6, 182, 212, 0.03));
  border: 1px solid rgba(79, 70, 229, 0.12);
  text-align: center;
}

.count-card strong {
  display: block;
  font-size: 28px;
  line-height: 1;
  margin-bottom: 4px;
}

.confetti-wrap {
  display: grid;
  gap: 10px;
  place-items: start;
}

.csv-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #fff;
}

.csv-table th,
.csv-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  text-align: left;
  font-size: 13px;
}

.csv-table th {
  background: var(--surface-2);
  color: #344054;
}

.anime-stage,
.gsap-stage {
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.04), rgba(249, 115, 22, 0.03));
  min-height: 150px;
  position: relative;
  overflow: hidden;
}

.anime-pill {
  width: 90px;
  height: 36px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #22c55e, #06b6d4);
  color: #fff;
  font-weight: 800;
  position: absolute;
  top: 22px;
  left: 22px;
}

.gsap-bar {
  position: absolute;
  left: 20px;
  right: 20px;
  top: 24px;
  height: 18px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.08);
  overflow: hidden;
}

.gsap-bar span {
  display: block;
  width: 24%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(135deg, #4f46e5, #f97316);
}

.gsap-notes {
  position: absolute;
  left: 20px;
  right: 20px;
  top: 64px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.gsap-notes span {
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(15, 23, 42, 0.07);
  font-size: 12px;
  font-weight: 700;
}

.utility-list {
  display: grid;
  gap: 8px;
}

.utility-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.utility-tile {
  padding: 12px;
  border-radius: 14px;
  background: #fff;
  border: 1px solid var(--line);
}

.utility-tile strong {
  display: block;
  margin-bottom: 4px;
}

.footer-space {
  height: 6px;
}

.muted {
  color: var(--muted);
}

.hidden {
  display: none !important;
}

/* 활용성(Best Use Case) 섹션 디자인 */
.lab-usecase {
  background: rgba(79, 70, 229, 0.03);
  border-left: 3px solid var(--accent);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 13px;
  line-height: 1.5;
  color: #374151;
  margin: 6px 0;
}

.lab-usecase strong {
  display: block;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 3px;
}


@media (max-width: 1180px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar__right {
    display: flex;
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 18px, 100%);
    padding-top: 9px;
  }

  .hero-copy,
  .hero-panel,
  .toolbar,
  .lab-card {
    border-radius: 16px;
  }

  .hero-copy {
    padding: 22px;
  }

  .hero-stats,
  .count-grid,
  .utility-grid,
  .stack--two {
    grid-template-columns: 1fr;
  }

  .demo-grid {
    grid-template-columns: 1fr;
  }

  .lab-card__head {
    flex-direction: column;
  }
}