:root {
  --bg: #eef3f1;
  --card: rgba(255, 255, 255, 0.86);
  --line: rgba(22, 63, 47, 0.16);
  --text: #102017;
  --muted: #5d6f65;
  --accent: #1f7a56;
  --accent-deep: #104b34;
  --radius: 16px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--text);
  font-family: "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 90% 8%, rgba(31, 122, 86, 0.14), transparent 24%),
    radial-gradient(circle at 8% 8%, rgba(16, 32, 23, 0.08), transparent 20%),
    linear-gradient(180deg, #f8fcf9 0%, var(--bg) 52%, #dfeae4 100%);
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }

.shell {
  width: min(calc(100% - 28px), 1060px);
  margin: 0 auto;
}

.top { padding: 18px 0 12px; }

.nav,
.card,
.footer {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  backdrop-filter: blur(12px);
}

.nav,
.footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px 16px;
}

.links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.links a {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(16, 75, 52, 0.08);
  color: #22533f;
  font-size: 12px;
}

.hero {
  margin: 10px 0 14px;
  padding: 22px;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "DengXian", "Segoe UI Variable Display", "PingFang SC", sans-serif;
}

h1 { font-size: clamp(30px, 6vw, 52px); line-height: 1.04; }
h2 { font-size: 26px; margin-bottom: 10px; }
h3 { font-size: 18px; margin-bottom: 8px; }

.lead,
.muted,
small,
.meta {
  color: var(--muted);
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

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

.card {
  padding: 18px;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 10px;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid rgba(22, 63, 47, 0.18);
  border-radius: 12px;
  padding: 0 12px;
  font: inherit;
  background: #fff;
  color: var(--text);
}

.field textarea {
  min-height: 100px;
  padding: 10px 12px;
  resize: vertical;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 12px;
  border: 0;
  padding: 0 14px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
}

.btn-secondary {
  color: #22533f;
  background: rgba(16, 75, 52, 0.08);
  border: 1px solid rgba(16, 75, 52, 0.18);
}

.btn-danger {
  color: #fff;
  background: linear-gradient(135deg, #a65531, #7a2f12);
}

.status {
  margin-top: 10px;
  border: 1px solid rgba(16, 75, 52, 0.18);
  background: rgba(16, 75, 52, 0.06);
  color: #1f5a42;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 14px;
}

.status.error {
  border-color: rgba(153, 57, 28, 0.25);
  background: rgba(153, 57, 28, 0.08);
  color: #7e2e17;
}

.list {
  display: grid;
  gap: 10px;
}

.item {
  border: 1px solid rgba(22, 63, 47, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.75);
  padding: 10px 12px;
}

.code {
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid rgba(22, 63, 47, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.72);
  padding: 10px 12px;
  font-family: "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
}

.upload-progress {
  width: 100%;
  height: 12px;
  margin: 8px 0 4px;
  accent-color: var(--accent);
}

.dropzone {
  border: 2px dashed rgba(16, 75, 52, 0.3);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  min-height: 150px;
  padding: 16px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 8px;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.dropzone:hover {
  border-color: rgba(16, 75, 52, 0.55);
  background: rgba(255, 255, 255, 0.9);
}

.dropzone.is-dragover {
  border-color: var(--accent);
  background: rgba(31, 122, 86, 0.12);
  transform: translateY(-1px);
}

.dropzone-title {
  font-weight: 700;
  color: #20553f;
}

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

.hidden-file-input {
  display: none;
}

.footer-wrap { padding: 0 0 22px; }

@media (max-width: 900px) {
  .grid,
  .grid-3 { grid-template-columns: 1fr; }
}