:root {
  color-scheme: light;
  --bg: #f5f1ea;
  --bg-deep: #e6dccb;
  --ink: #1f1c17;
  --ink-soft: #5a5248;
  --accent: #b85c38;
  --accent-2: #3c6e71;
  --panel: rgba(255, 255, 255, 0.8);
  --stroke: rgba(31, 28, 23, 0.12);
  --shadow: 0 18px 40px rgba(31, 28, 23, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Songti SC", "STSong", "Kaiti SC", "PingFang SC", "Hiragino Sans GB", serif;
  color: var(--ink);
  background: linear-gradient(160deg, var(--bg) 0%, #f7f4ef 45%, #efe7dc 100%);
  position: relative;
  overflow-x: hidden;
}

.bg-glow {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(184, 92, 56, 0.18), transparent 55%),
    radial-gradient(circle at 90% 10%, rgba(60, 110, 113, 0.18), transparent 50%),
    radial-gradient(circle at 60% 80%, rgba(31, 28, 23, 0.12), transparent 60%);
  z-index: 0;
  pointer-events: none;
}

.shell {
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 28px 64px;
  position: relative;
  z-index: 1;
  animation: fadeUp 0.6s ease;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero {
  margin-bottom: 32px;
}

.hero__label {
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 12px;
}

h1 {
  font-size: clamp(28px, 4vw, 40px);
  margin: 0 0 12px;
  letter-spacing: 0.03em;
}

.hero__sub {
  color: var(--ink-soft);
  max-width: 720px;
  line-height: 1.6;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--stroke);
  border-radius: 18px;
  padding: 18px 18px 20px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.panel.wide {
  grid-column: 1 / -1;
}

.panel__title {
  font-weight: 700;
  margin-bottom: 12px;
  font-size: 16px;
}

.panel__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
}

.field.row {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.field input,
.field select,
textarea {
  font-family: inherit;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.85);
  color: var(--ink);
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.toggle-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.8);
  font-size: 13px;
}

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

.btn {
  border: 1px solid transparent;
  padding: 10px 16px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn.primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px rgba(184, 92, 56, 0.28);
}

.btn.ghost {
  background: transparent;
  border-color: var(--stroke);
  color: var(--ink);
}

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

.status {
  font-size: 13px;
  color: var(--ink-soft);
}

.progress {
  width: 100%;
  height: 8px;
  background: rgba(31, 28, 23, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.2s ease;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stat {
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--stroke);
}

.stat__label {
  font-size: 12px;
  color: var(--ink-soft);
}

.stat__value {
  font-weight: 700;
  margin-top: 4px;
}

.legend {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--ink-soft);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot.high {
  background: #b85c38;
}

.dot.mid {
  background: #d9a441;
}

.dot.low {
  background: #8b8b6e;
}

.summary {
  font-size: 14px;
  color: var(--ink-soft);
}

.result-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.result-item {
  display: grid;
  grid-template-columns: 140px 1fr 200px;
  gap: 12px;
  align-items: center;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.85);
}

.result-item__kw {
  font-weight: 600;
}

.bar {
  position: relative;
  height: 12px;
  border-radius: 999px;
  background: rgba(31, 28, 23, 0.08);
  overflow: hidden;
}

.bar span {
  position: absolute;
  inset: 0;
  width: 0%;
  background: linear-gradient(90deg, #b85c38, #e0b35c);
  border-radius: 999px;
}

.meta {
  font-size: 12px;
  color: var(--ink-soft);
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

.llm-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.llm-output {
  background: rgba(16, 16, 16, 0.95);
  color: #f5f2ea;
  padding: 16px;
  border-radius: 12px;
  min-height: 180px;
  white-space: pre-wrap;
  font-size: 13px;
  line-height: 1.6;
}

@media (max-width: 960px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .result-item {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }

  .meta {
    justify-content: flex-start;
  }

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