:root {
  --bg: #f3ecdd;
  --bg-deep: #e7dcc8;
  --panel: rgba(255, 250, 242, 0.86);
  --panel-strong: rgba(255, 247, 234, 0.95);
  --text: #1f1d18;
  --muted: #615847;
  --accent: #0d7a63;
  --accent-strong: #095847;
  --line: rgba(31, 29, 24, 0.12);
  --shadow: 0 18px 50px rgba(72, 54, 28, 0.12);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", monospace;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", serif;
}

* {
  box-sizing: border-box;
}

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

body {
  background:
    radial-gradient(circle at top left, rgba(13, 122, 99, 0.14), transparent 34%),
    radial-gradient(circle at top right, rgba(161, 92, 37, 0.18), transparent 28%),
    linear-gradient(180deg, var(--bg) 0%, #f8f3e8 50%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: var(--sans);
}

button,
input {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 18px;
  margin-bottom: 18px;
}

.hero-copy,
.hero-card,
.panel,
.subpanel {
  background: var(--panel);
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 36px;
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -30px -30px auto;
  width: 180px;
  height: 180px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(13, 122, 99, 0.18), rgba(161, 92, 37, 0.12));
  filter: blur(8px);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 12px;
  font-weight: 700;
}

.hero h1 {
  margin: 0;
  max-width: 12ch;
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 56px);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.hero-text {
  margin: 18px 0 0;
  max-width: 56ch;
  color: var(--muted);
  line-height: 1.7;
}

.hero-card {
  border-radius: var(--radius-lg);
  padding: 24px;
  display: grid;
  gap: 14px;
  align-content: center;
  background:
    linear-gradient(180deg, rgba(255, 247, 234, 0.98), rgba(243, 236, 221, 0.92)),
    var(--panel);
}

.hero-stat {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.hero-stat-value {
  display: block;
  font-family: var(--serif);
  font-size: 34px;
  line-height: 1;
}

.hero-stat-label {
  display: block;
  margin-top: 6px;
  color: var(--muted);
}

.workspace {
  display: grid;
  grid-template-columns: 360px minmax(0, 1fr);
  gap: 18px;
}

.panel {
  border-radius: var(--radius-lg);
  padding: 24px;
}

.panel-head h2,
.subpanel h3 {
  margin: 0;
  font-family: var(--serif);
}

.panel-head p,
#summary-text {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.panel-head-inline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.dropzone {
  display: grid;
  place-items: center;
  gap: 10px;
  min-height: 260px;
  margin-top: 18px;
  padding: 28px;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1.5px dashed rgba(13, 122, 99, 0.34);
  background:
    linear-gradient(180deg, rgba(13, 122, 99, 0.08), rgba(255, 250, 242, 0.7)),
    rgba(255, 247, 234, 0.95);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.dropzone.drag-active {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: 0 16px 34px rgba(13, 122, 99, 0.16);
}

.dropzone input {
  display: none;
}

.dropzone-title {
  font-family: var(--serif);
  font-size: 28px;
}

.dropzone-subtitle {
  max-width: 28ch;
  color: var(--muted);
  line-height: 1.6;
}

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

.controls {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

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

.field-label {
  font-size: 14px;
  color: var(--muted);
}

.field-input {
  width: 100%;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 252, 247, 0.95);
  color: var(--text);
}

.field-input:focus {
  outline: 2px solid rgba(13, 122, 99, 0.16);
  border-color: rgba(13, 122, 99, 0.4);
}

.privacy-note {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(255, 248, 236, 0.88);
  border: 1px solid rgba(161, 92, 37, 0.14);
  color: var(--muted);
  line-height: 1.6;
}

.button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  transition:
    transform 140ms ease,
    opacity 140ms ease,
    background 140ms ease;
}

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

.button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #f5fff7;
}

.button-secondary {
  background: rgba(31, 29, 24, 0.06);
  color: var(--text);
}

.button-ghost {
  background: transparent;
  color: var(--accent-strong);
  border: 1px solid rgba(13, 122, 99, 0.2);
}

.results-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 18px;
  margin-top: 20px;
}

.subpanel {
  border-radius: var(--radius-md);
  padding: 18px;
  background: rgba(255, 251, 245, 0.82);
}

.scroll-area {
  margin-top: 14px;
  max-height: 380px;
  overflow: auto;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.result-table th,
.result-table td {
  padding: 12px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.result-table th {
  color: var(--muted);
  font-weight: 600;
}

.result-table td {
  word-break: break-word;
}

.empty-row td,
.empty-issue {
  color: var(--muted);
}

.issue-list {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.6;
}

.issue-list li + li {
  margin-top: 10px;
}

.output-preview {
  margin-top: 18px;
}

.output-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

#output-preview {
  margin: 14px 0 0;
  padding: 18px;
  border-radius: var(--radius-sm);
  background: #1d1a17;
  color: #f2ece2;
  overflow: auto;
  max-height: 420px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.55;
}

code {
  font-family: var(--mono);
}

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

  .panel-head-inline,
  .output-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy {
    padding: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}