:root {
  --accent: #fcaf3b;
  --accent-strong: #f39a0b;
  --accent-soft: #fff6e6;
  --accent-deep: #7b4d00;
  --ink: #1f1f1f;
  --muted: #6b7280;
  --surface: #ffffff;
  --border: #e8e8e8;
  --shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body.app-shell {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #fafafa;
}

body,
.form-control,
.form-text,
.btn,
.nav-link {
  font-family: "Segoe UI", "Microsoft YaHei UI", sans-serif;
}

.page-container {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.site-header .navbar {
  padding: 1rem 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-badge {
  width: 2.5rem;
  height: 2.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  color: var(--accent-deep);
  background: var(--accent-soft);
  font-size: 1rem;
}

.brand-title,
.brand-subtitle {
  display: block;
  line-height: 1.1;
}

.brand-title {
  font-size: 1rem;
  font-weight: 700;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.8rem;
}

.site-links {
  gap: 1rem;
}

.site-link {
  color: #4b5563 !important;
  font-weight: 500;
  padding: 0.25rem 0 !important;
}

.site-link:hover {
  color: var(--accent-deep) !important;
}

.intro-section {
  margin-bottom: 1.5rem;
}

.intro-layout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent-deep);
  margin-bottom: 0.75rem;
}

.intro-copy h1 {
  max-width: 400ch;
  margin-bottom: 0.75rem;
  font-size: clamp(1.9rem, 3vw, 2.0rem);
  font-weight: 800;
  line-height: 1.15;
}

.intro-copy p {
  max-width: 52rem;
  margin-bottom: 1rem;
  color: #4b5563;
  line-height: 1.7;
}

.intro-logo {
  flex: 0 0 auto;
}

.intro-logo img {
  display: block;
  width: min(220px, 28vw);
  min-width: 120px;
  height: auto;
}

.intro-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  color: #4b5563;
  font-size: 0.95rem;
}

.intro-meta i {
  color: var(--accent-strong);
  margin-right: 0.35rem;
}

.simple-panel {
  height: 100%;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.panel-header h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
}

.validation-summary {
  padding: 0.85rem 1rem;
  border-radius: 0.75rem;
  background: rgba(220, 53, 69, 0.08);
  border: 1px solid rgba(220, 53, 69, 0.14);
}

.form-label {
  font-weight: 600;
  margin-bottom: 0.45rem;
}

.form-control {
  min-height: 2.9rem;
  border-radius: 0.75rem;
  border-color: #d8d8d8;
  background: #fff;
}

.form-control:focus {
  border-color: rgba(252, 175, 59, 0.7);
  box-shadow: 0 0 0 0.2rem rgba(252, 175, 59, 0.16);
}

.form-text {
  color: var(--muted);
}

.file-picker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 2.9rem;
}

.file-picker-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file-picker-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  margin: 0;
  padding: 0.625rem 1rem;
  border: 1px solid #d4d4d8;
  border-radius: 0.75rem;
  background: #fff;
  color: #1f2937;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.file-picker-button:hover {
  background: #fafafa;
  border-color: #cfcfcf;
}

.file-picker-input:focus + .file-picker-button {
  border-color: rgba(252, 175, 59, 0.7);
  box-shadow: 0 0 0 0.2rem rgba(252, 175, 59, 0.16);
}

.file-picker-name {
  color: var(--muted);
  font-size: 0.95rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  min-height: 2.9rem;
  border-radius: 0.75rem;
  font-weight: 600;
}

.btn-primary {
  color: #1f1f1f;
  border-color: var(--accent);
  background: var(--accent);
}

.btn-primary:hover,
.btn-primary:focus {
  color: #1f1f1f;
  border-color: var(--accent-strong);
  background: #f8b64f;
}

.btn-outline-secondary {
  color: #374151;
  border-color: #d4d4d8;
  background: #fff;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
  color: #1f2937;
  border-color: #cfcfcf;
  background: #fafafa;
}

.btn i,
.intro-meta i {
  margin-right: 0.35rem;
}

.notes-list {
  padding-left: 1.2rem;
}

.notes-list li {
  margin-bottom: 0.9rem;
  line-height: 1.65;
  color: #374151;
}

.notes-list li:last-child {
  margin-bottom: 0;
}

code {
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 0.15rem 0.45rem;
  border-radius: 0.35rem;
}

.workflow-list {
  display: grid;
  gap: 0.75rem;
}

.workflow-item {
  display: flex;
  gap: 0.9rem;
  align-items: flex-start;
  padding: 1rem;
  border-radius: 0.85rem;
  background: #fcfcfc;
  border: 1px solid var(--border);
}

.workflow-index {
  min-width: 2.5rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}

.workflow-item p {
  margin: 0.2rem 0 0;
  color: #6b7280;
}

.site-footer {
  padding: 0.75rem 0 1.5rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  padding-top: 0.5rem;
  font-size: 0.92rem;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem #fff, 0 0 0 0.25rem rgba(252, 175, 59, 0.28);
}

@media (max-width: 991.98px) {
  .navbar-collapse {
    margin-top: 0.75rem;
  }
}

@media (max-width: 767.98px) {
  .page-container {
    padding-top: 1rem;
  }

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

  .intro-logo img {
    width: min(180px, 48vw);
    min-width: 0;
  }

  .simple-panel {
    padding: 1.2rem;
  }

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

  .button-row .btn {
    width: 100%;
  }
}