:root {
  --bg: #f4efe5;
  --panel: rgba(255, 253, 248, 0.92);
  --panel-strong: #fffdf8;
  --line: rgba(93, 71, 44, 0.14);
  --text: #34271d;
  --muted: #776252;
  --accent: #b45f2f;
  --accent-deep: #7e3a16;
  --shadow: 0 20px 60px rgba(71, 45, 19, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 211, 162, 0.55), transparent 32%),
    radial-gradient(circle at bottom right, rgba(181, 118, 52, 0.2), transparent 28%),
    linear-gradient(180deg, #fbf7f0 0%, var(--bg) 100%);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(93, 71, 44, 0.1);
  background: rgba(255, 250, 242, 0.88);
  backdrop-filter: blur(14px);
}

.topbar-inner {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 0;
}

.brand {
  color: var(--accent-deep);
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
}

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

.topnav-link {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(126, 58, 22, 0.12);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.68);
  text-decoration: none;
  font-size: 14px;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease;
}

.topnav-link:hover,
.topnav-link.is-active {
  border-color: rgba(126, 58, 22, 0.35);
  color: var(--accent-deep);
  background: rgba(255, 244, 231, 0.96);
}

code {
  font-family: "Consolas", monospace;
}

.page {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
  padding: 40px 0 56px;
}

.hero {
  display: grid;
  grid-template-columns: 1.3fr 320px;
  gap: 24px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-deep);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 54px);
  line-height: 1.05;
}

.intro {
  max-width: 680px;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--muted);
}

.stats-card,
.upload-card,
.placeholder-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.stats-card {
  padding: 22px;
}

.stats-card h2,
.upload-card h3 {
  margin: 0 0 16px;
  font-size: 16px;
}

.stats-card dl {
  margin: 0;
  display: grid;
  gap: 14px;
}

.stats-card div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--panel-strong);
  border: 1px solid rgba(126, 58, 22, 0.08);
}

.stats-card dt {
  color: var(--muted);
  font-size: 14px;
}

.stats-card dd {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
}

.upload-card,
.placeholder-card {
  margin-top: 28px;
  padding: 28px;
}

.progress-card {
  margin-bottom: 22px;
  padding: 18px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid rgba(126, 58, 22, 0.08);
}

.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.progress-header h3 {
  margin: 0;
}

.progress-track {
  overflow: hidden;
  height: 12px;
  border-radius: 999px;
  background: rgba(126, 58, 22, 0.12);
}

.progress-fill {
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #c46f2a 0%, #efb25b 100%);
  transition: width 280ms ease;
}

.progress-label {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.upload-dropzone {
  display: grid;
  place-items: center;
  min-height: 260px;
  padding: 28px;
  border-radius: 24px;
  border: 2px dashed rgba(126, 58, 22, 0.28);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.88), rgba(255, 240, 224, 0.96)),
    repeating-linear-gradient(
      -45deg,
      rgba(180, 95, 47, 0.06),
      rgba(180, 95, 47, 0.06) 12px,
      rgba(255, 255, 255, 0) 12px,
      rgba(255, 255, 255, 0) 24px
    );
  text-align: center;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.upload-dropzone:hover {
  transform: translateY(-2px);
  border-color: rgba(126, 58, 22, 0.44);
  box-shadow: 0 18px 36px rgba(100, 54, 26, 0.12);
}

.upload-dropzone input {
  display: none;
}

.upload-title {
  font-size: 30px;
  font-weight: 700;
}

.upload-hint {
  margin-top: 10px;
  font-size: 15px;
  color: var(--muted);
}

.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.status-grid-four {
  grid-template-columns: repeat(4, 1fr);
}

.status-grid article {
  padding: 18px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid rgba(126, 58, 22, 0.08);
}

.status-grid p {
  margin: 0;
  color: var(--accent-deep);
  font-size: 16px;
  line-height: 1.6;
  word-break: break-word;
}

#status-detail {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.full-span {
  grid-column: 1 / -1;
}

.hero-single {
  grid-template-columns: 1fr;
}

.keyword-grid {
  display: grid;
  grid-template-columns: 1.3fr 320px;
  gap: 18px;
  align-items: stretch;
}

.keyword-hint-card,
.result-card,
.error-card {
  padding: 20px;
  border-radius: 18px;
  background: var(--panel-strong);
  border: 1px solid rgba(126, 58, 22, 0.08);
}

.keyword-hint-card h3,
.result-card h3,
.error-card h3 {
  margin: 0 0 12px;
}

.simple-list {
  margin: 10px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.simple-list li {
  margin-bottom: 6px;
}

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

.hidden {
  display: none;
}

.keyword-stats-grid {
  margin-top: 0;
  margin-bottom: 18px;
  grid-template-columns: repeat(5, 1fr);
}

.result-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.primary-button,
.secondary-button {
  padding: 10px 16px;
  border-radius: 12px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
}

.primary-button {
  color: #fff;
  background: linear-gradient(90deg, #b45f2f, #d4884a);
}

.secondary-button {
  color: var(--accent-deep);
  background: rgba(180, 95, 47, 0.12);
}

.table-shell {
  overflow-x: auto;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
}

.result-table th,
.result-table td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(126, 58, 22, 0.08);
  text-align: left;
  white-space: nowrap;
}

.result-table th {
  color: var(--accent-deep);
  background: rgba(180, 95, 47, 0.06);
}

.result-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(180, 95, 47, 0.12);
  color: var(--accent-deep);
  font-size: 13px;
}

@media (max-width: 860px) {
  .topbar-inner {
    align-items: flex-start;
    flex-direction: column;
  }

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

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

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


.keyword-stats-grid-wide {
  grid-template-columns: repeat(6, 1fr);
}

.placement-stats-grid {
  grid-template-columns: repeat(5, 1fr);
}

.aging-stats-grid {
  grid-template-columns: repeat(5, 1fr);
}

.result-card-spaced {
  margin-top: 18px;
}