:root {
  --bg: #f4efe6;
  --panel: rgba(255, 251, 245, 0.88);
  --panel-border: rgba(96, 65, 35, 0.12);
  --ink: #1d1b19;
  --muted: #665a4b;
  --accent: #aa4b1d;
  --accent-strong: #7d2f0c;
  --accent-soft: #f0d4c0;
  --success: #215f3f;
  --warning: #9d620e;
  --error: #9f2d2d;
  --shadow: 0 18px 60px rgba(40, 26, 13, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(205, 114, 54, 0.24), transparent 30%),
    radial-gradient(circle at top right, rgba(155, 90, 40, 0.16), transparent 25%),
    linear-gradient(180deg, #faf6ef 0%, #efe5d7 100%);
}

.page-shell {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 20px;
  margin-bottom: 24px;
}

.hero-copy,
.hero-note,
.panel {
  border: 1px solid var(--panel-border);
  border-radius: 24px;
  background: var(--panel);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 28px;
}

.hero-note {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 8px;
  color: var(--muted);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-strong);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.02;
}

.hero-text {
  margin: 18px 0 0;
  max-width: 52rem;
  color: var(--muted);
  line-height: 1.65;
}

.grid {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 20px;
}

.panel {
  padding: 22px;
}

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

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.panel-head h2,
.result-block h3 {
  margin: 0;
}

.badge {
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.85rem;
}

.mono {
  font-family: "Consolas", "SFMono-Regular", monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

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

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

.field span {
  font-weight: 600;
}

select,
input[type="file"],
textarea,
button {
  border-radius: 16px;
  border: 1px solid rgba(79, 56, 35, 0.16);
  font: inherit;
}

select,
textarea,
input[type="file"] {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.78);
}

.upload-box {
  padding: 14px;
  border: 1px dashed rgba(106, 69, 35, 0.3);
  border-radius: 18px;
  background: rgba(255, 247, 240, 0.72);
}

.upload-box small {
  color: var(--muted);
}

button {
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: #fff8f3;
  font-weight: 700;
  cursor: pointer;
  transition: transform 140ms ease, opacity 140ms ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
}

button:disabled,
textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.status-card {
  margin-top: 16px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid transparent;
}

.status-card p {
  margin: 8px 0 0;
}

.status-card.muted {
  background: rgba(126, 112, 97, 0.08);
  border-color: rgba(126, 112, 97, 0.16);
}

.status-card.running {
  background: rgba(200, 146, 39, 0.1);
  border-color: rgba(200, 146, 39, 0.22);
}

.status-card.success {
  background: rgba(33, 95, 63, 0.09);
  border-color: rgba(33, 95, 63, 0.18);
}

.status-card.error {
  background: rgba(159, 45, 45, 0.09);
  border-color: rgba(159, 45, 45, 0.18);
}

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

.score-card {
  padding: 14px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.74), rgba(244, 233, 220, 0.88));
  border: 1px solid rgba(96, 65, 35, 0.1);
}

.score-card span {
  display: block;
  color: var(--muted);
  margin-bottom: 8px;
}

.score-card strong {
  font-size: 1.8rem;
}

.result-block {
  margin-top: 18px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: #fffaf5;
  border: 1px solid rgba(96, 65, 35, 0.1);
}

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

.answer-box {
  white-space: pre-wrap;
  margin-top: 12px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid rgba(96, 65, 35, 0.1);
  font: inherit;
  line-height: 1.7;
}

.chat-log {
  min-height: 240px;
  max-height: 460px;
  overflow-y: auto;
  display: grid;
  gap: 12px;
  padding: 4px 0;
}

.message {
  max-width: min(88%, 760px);
  padding: 14px 16px;
  border-radius: 18px;
  line-height: 1.65;
}

.message-system {
  background: rgba(125, 47, 12, 0.08);
}

.message-user {
  justify-self: end;
  background: rgba(170, 75, 29, 0.12);
}

.message-assistant {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(96, 65, 35, 0.12);
}

.chat-form {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

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

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

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 20px, 1000px);
    padding-top: 16px;
  }

  .hero-copy,
  .hero-note,
  .panel {
    border-radius: 18px;
  }

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