:root {
    --bg: #f5efe6;
    --panel: #fffaf4;
    --ink: #202020;
    --muted: #6b6259;
    --accent: #a44a3f;
    --accent-dark: #7d3027;
    --line: #d8c9b7;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top right, rgba(164, 74, 63, 0.16), transparent 25%),
        linear-gradient(180deg, #f7f0e8 0%, #efe5d6 100%);
}

a {
    color: var(--accent-dark);
    text-decoration: none;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 1rem;
    padding: 1.4rem 2rem;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 250, 244, 0.92);
    backdrop-filter: blur(8px);
}

.topbar h1 {
    margin: 0;
    font-size: 1.5rem;
}

.topbar p {
    margin: 0.3rem 0 0;
    color: var(--muted);
}

.topbar nav {
    display: flex;
    gap: 1rem;
}

.page {
    padding: 1.5rem 2rem 3rem;
}

.hero,
.two-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1rem;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.8rem;
    align-items: end;
}

.actions {
    display: flex;
    gap: 0.75rem;
    align-items: end;
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 18px;
    padding: 1.2rem;
    box-shadow: 0 12px 30px rgba(102, 77, 49, 0.08);
    margin-bottom: 1rem;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.8rem;
}

.metric-grid.compact {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}

.metric-grid div {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.9rem;
}

.metric-grid strong {
    display: block;
    font-size: 1.4rem;
    color: var(--accent-dark);
}

.metric-grid span {
    color: var(--muted);
    font-size: 0.92rem;
}

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

th,
td {
    text-align: left;
    padding: 0.75rem 0.5rem;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

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

label {
    display: block;
    margin-bottom: 0.9rem;
    font-weight: 600;
}

input,
textarea,
select,
button {
    width: 100%;
    margin-top: 0.35rem;
    padding: 0.75rem 0.9rem;
    border-radius: 12px;
    border: 1px solid var(--line);
    font: inherit;
}

button,
.button {
    display: inline-block;
    width: auto;
    background: var(--accent);
    color: #fff;
    border: none;
    cursor: pointer;
}

.button.secondary {
    background: #d8c9b7;
    color: var(--ink);
}

.button {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    margin-top: 1rem;
}

.inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.inline input {
    width: auto;
    margin: 0;
}

.detail-list {
    display: grid;
    gap: 0.7rem;
}

.detail-list div {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 0.8rem;
}

.detail-list dt {
    color: var(--muted);
}

.detail-list dd {
    margin: 0;
}

.notice,
.tip,
.result-box {
    background: #fff;
    border-left: 4px solid var(--accent);
    padding: 0.8rem 1rem;
    border-radius: 10px;
}

.ocr-meta {
    margin-top: 0.35rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.ocr-text {
    white-space: pre-wrap;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 0.75rem;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.attachment-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 1rem;
}

.attachment-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.9rem;
}

.frame-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 0.8rem;
    margin-top: 0.8rem;
}

.frame-card {
    margin: 0;
    background: #fffaf4;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}

.frame-card img {
    display: block;
    width: 100%;
    height: 120px;
    object-fit: cover;
    background: #ece3d8;
}

.frame-card figcaption {
    padding: 0.65rem;
    font-size: 0.88rem;
    color: var(--muted);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.8rem;
    margin-top: 0.8rem;
}

.image-card {
    margin: 0;
    background: #fffaf4;
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}

.image-card img {
    display: block;
    width: 100%;
    max-height: 260px;
    object-fit: contain;
    background: #ece3d8;
}

.image-card figcaption {
    padding: 0.65rem;
    font-size: 0.88rem;
    color: var(--muted);
}

.teacher-links {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.teacher-links li a {
    display: inline-block;
    padding: 0.6rem 0.8rem;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 999px;
}

.mini-checklist {
    margin: 0.8rem 0 0;
    padding-left: 1.2rem;
    color: var(--ink);
}

.mini-checklist li {
    margin-bottom: 0.45rem;
}

.template-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin: 0.5rem 0 1rem;
}

.template-grid .button {
    margin-top: 0;
}

.structured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.5rem 1rem;
    margin: 0.5rem 0 1rem;
}

.upload-preview {
    margin: 0.8rem 0 1rem;
    padding: 0.9rem;
    border: 1px dashed var(--line);
    border-radius: 14px;
    background: #fff;
}

.upload-preview-head {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: baseline;
    margin-bottom: 0.8rem;
    color: var(--muted);
}

.upload-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.8rem;
}

.upload-preview-item {
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fffaf4;
    overflow: hidden;
}

.upload-preview-meta {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.65rem;
    font-size: 0.88rem;
}

.upload-preview-meta span {
    color: var(--muted);
}

.upload-preview-image {
    display: block;
    width: 100%;
    height: 160px;
    object-fit: contain;
    background: #ece3d8;
}

.upload-preview-badge {
    margin: 0.65rem;
    padding: 1rem 0.8rem;
    text-align: center;
    border-radius: 10px;
    background: #efe5d6;
    color: var(--muted);
    font-size: 0.92rem;
}

@media (max-width: 720px) {
    .topbar,
    .page {
        padding: 1rem;
    }

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

    .detail-list div {
        grid-template-columns: 1fr;
    }
}