:root {
  --blue: #0f57b7;
  --blue-deep: #083878;
  --yellow: #ffcc12;
  --yellow-soft: #ffe783;
  --ink: #111111;
  --paper: #fcfaf5;
  --line: rgba(17, 17, 17, 0.12);
  --shadow: 0 30px 80px rgba(9, 27, 63, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Malgun Gothic", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 20%, rgba(255, 204, 18, 0.22), transparent 18%),
    radial-gradient(circle at 92% 18%, rgba(255, 255, 255, 0.15), transparent 16%),
    linear-gradient(180deg, var(--blue) 0%, #0a4b9f 42%, #f6f4ee 42%, #f6f4ee 100%);
}

.lecture-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 22px;
  color: white;
  background: rgba(2, 23, 56, 0.28);
  backdrop-filter: blur(12px);
}

.brand,
.topbar a {
  color: inherit;
  text-decoration: none;
}

.topbar a {
  display: inline-flex;
  align-items: center;
  line-height: 1;
}

.brand {
  font-family: "Segoe UI Black", "Malgun Gothic", sans-serif;
  font-size: 1.1rem;
  letter-spacing: 0.06em;
}

.topbar-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.wetoon-link {
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--yellow);
  color: #111 !important;
  font-weight: 800;
  border: 2px solid #111;
  min-height: 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 420px minmax(0, 1fr);
  gap: 28px;
  margin-top: 24px;
  align-items: start;
}

.poster-frame {
  position: relative;
  display: grid;
  gap: 14px;
}

.poster-image {
  display: none;
  width: 100%;
  border: 6px solid #111;
  background: white;
  box-shadow: var(--shadow);
}

.poster-frame.has-poster .poster-image {
  display: block;
}

.poster-frame.has-poster .poster-card {
  display: none;
}

.poster-card,
.hero-copy,
.section {
  background: var(--paper);
  border: 6px solid #111;
  box-shadow: var(--shadow);
}

.poster-card {
  position: relative;
  padding: 24px;
  transform: rotate(-1.3deg);
  overflow: hidden;
}

.poster-card::before {
  content: "";
  position: absolute;
  inset: auto -30px -26px auto;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, rgba(255, 204, 18, 0.46) 0%, transparent 70%);
}

.poster-logo {
  display: inline-flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 14px;
  border: 4px solid #111;
  background: var(--yellow);
  font-weight: 800;
  font-size: 1.35rem;
}

.poster-logo span {
  font-size: 0.82rem;
  text-transform: uppercase;
}

.poster-tag {
  margin: 18px 0 8px;
  font-family: "Segoe UI Black", "Malgun Gothic", sans-serif;
  font-size: 1.25rem;
}

.poster-card h1 {
  margin: 0;
  font-family: "Segoe UI Black", "Malgun Gothic", sans-serif;
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  line-height: 0.95;
  color: var(--yellow);
  -webkit-text-stroke: 3px #111;
}

.poster-date {
  margin: 18px 0;
  padding: 12px 14px;
  border: 4px solid #111;
  background: white;
  font-weight: 700;
}

.poster-bubbles {
  display: grid;
  gap: 10px;
}

.bubble {
  padding: 12px 14px;
  border: 4px solid #111;
  background: #fff;
  font-weight: 700;
}

.poster-note {
  margin-top: 16px;
  padding: 14px;
  border: 4px solid #111;
  background: var(--yellow);
  transform: rotate(-4deg);
  width: fit-content;
}

.poster-note strong,
.poster-note span {
  display: block;
}

.poster-speech {
  margin-top: 20px;
  padding: 20px;
  border: 4px solid #111;
  border-radius: 42px;
  background: #fff;
  font-family: "Segoe UI Black", "Malgun Gothic", sans-serif;
  font-size: 1.25rem;
  line-height: 1.35;
}

.poster-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  padding: 14px 22px;
  border: 4px solid #111;
  background: linear-gradient(135deg, var(--yellow) 0%, #ffb300 100%);
  color: #111;
  font-weight: 900;
  text-decoration: none;
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 28px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 800;
}

.hero-copy h2,
.section h2 {
  margin: 0;
  font-family: "Segoe UI Black", "Malgun Gothic", sans-serif;
  font-size: clamp(2rem, 4vw, 3.3rem);
  line-height: 1.04;
}

.lead,
.section-head p {
  line-height: 1.75;
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.primary-link,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
}

.primary-link {
  background: linear-gradient(135deg, var(--yellow) 0%, #ffb300 100%);
  color: #111;
  border: 3px solid #111;
}

.ghost-link {
  border: 3px solid #111;
  color: #111;
  background: transparent;
}

.buttonish {
  cursor: pointer;
}

.hero-panels,
.principle-grid,
.showcase-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.hero-panels {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-panel,
.principle-card,
.showcase-card,
.idea-card,
.expanded-card,
.idea-form {
  border: 3px solid #111;
  background: white;
}

.info-panel,
.principle-card,
.showcase-card {
  padding: 18px;
}

.section {
  margin-top: 24px;
  padding: 26px;
}

.section-head {
  margin-bottom: 18px;
}

.principle-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.workflow-list {
  display: grid;
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.workflow-list li {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 3px solid #111;
  background: linear-gradient(180deg, #fff 0%, #fff7d8 100%);
}

.workflow-list strong {
  font-size: 1.05rem;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.download-card {
  display: grid;
  gap: 8px;
  padding: 20px;
  border: 3px solid #111;
  background: linear-gradient(180deg, #fff 0%, #fff7d8 100%);
  color: #111;
  text-decoration: none;
}

.download-card strong {
  font-size: 1.05rem;
}

.download-card span {
  line-height: 1.6;
}

.idea-console {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  gap: 18px;
}

.idea-form {
  padding: 18px;
  display: grid;
  gap: 14px;
  position: sticky;
  top: 16px;
}

.idea-form label {
  display: grid;
  gap: 8px;
  font-weight: 700;
}

.subject-block {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 2px dashed #111;
  background: #fffdfa;
}

.subject-block-example {
  background: linear-gradient(180deg, #fff9da 0%, #fffef7 100%);
}

.subject-block-actual {
  background: linear-gradient(180deg, #eef7ff 0%, #ffffff 100%);
}

.field-hint {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(17, 17, 17, 0.72);
}

.strong-hint {
  color: #0b4fa9;
  font-weight: 700;
}

.idea-form input,
.idea-form select {
  width: 100%;
  padding: 11px 12px;
  border: 2px solid #111;
  background: #fffef9;
  font: inherit;
}

.idea-actions {
  display: grid;
  gap: 10px;
}

.mini-action {
  justify-self: start;
  padding: 10px 14px;
  border: 2px solid #111;
  background: var(--yellow);
  color: #111;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.provider-status {
  font-size: 0.93rem;
  line-height: 1.6;
}

.provider-status[data-mode="groq"] {
  color: #0a5d36;
}

.provider-status[data-mode="local-fallback"] {
  color: #8c5200;
}

.provider-status[data-mode="error"] {
  color: #9e2020;
}

.idea-results {
  display: grid;
  gap: 18px;
}

.card-stack {
  display: grid;
  gap: 12px;
}

.idea-card {
  padding: 18px;
}

.idea-card h4,
.expanded-card h4 {
  margin: 8px 0 10px;
  font-size: 1.18rem;
}

.idea-meta {
  margin: 0;
  color: var(--blue-deep);
  font-size: 0.92rem;
  font-weight: 700;
}

.idea-card ul,
.expanded-card ul,
.expanded-card ol {
  margin: 10px 0 0;
  padding-left: 20px;
}

.expanded-card {
  padding: 22px;
  min-height: 220px;
}

.empty-card {
  display: flex;
  align-items: center;
  color: rgba(17, 17, 17, 0.65);
}

.expanded-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.showcase-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (max-width: 1000px) {
  .hero-grid,
  .idea-console {
    grid-template-columns: 1fr;
  }

  .hero-panels,
  .principle-grid,
  .download-grid,
  .showcase-grid,
  .expanded-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .lecture-shell {
    width: min(100% - 20px, 1200px);
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .section,
  .hero-copy,
  .poster-card {
    padding: 20px;
  }
}