:root {
    --bg-color: #f4f6f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --card-border: #e1e4e8;
    --primary-color: #2c3e50;
    --accent-color: #3498db;
    --tag-bg: #e8f4fc;
    --tag-text: #2980b9;
    --highlight: #e74c3c;
    --gray-text: #666;
    --scrollbar-thumb: #ccc;
    --logo-height: 90px; 
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --card-bg: #1e1e1e;
    --card-border: #333;
    --primary-color: #ecf0f1;
    --tag-bg: #2c3e50;
    --tag-text: #5dade2;
    --gray-text: #aaa;
    --scrollbar-thumb: #555;
}

html { height: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-y: hidden;
}

header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--card-border);
    padding: 15px 30px; 
    min-height: 60px; 
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    transition: all 0.2s;
}

.logo-area img {
    height: var(--logo-height); 
    width: auto;
    display: block;
    transition: height 0.1s; 
}

.header-right { display: flex; align-items: center; gap: 15px; }

.theme-toggle {
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--card-border);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--text-color);
}

.search-input {
    padding: 6px 10px;
    border: 1px solid var(--card-border);
    border-radius: 4px;
    background: var(--bg-color);
    color: var(--text-color);
    outline: none;
    font-size: 13px;
    width: 150px;
}

.announcement {
    background-color: var(--accent-color);
    color: white;
    text-align: center;
    padding: 5px;
    font-size: 12px;
    flex-shrink: 0;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    padding: 10px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    width: 100%;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 280px;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.card-img {
    width: 100%;
    height: 130px;
    object-fit: cover;
    background: #eee;
    flex-shrink: 0;
}

.card-body {
    padding: 12px 15px;
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.card-tag {
    display: inline-block;
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    margin-bottom: 6px;
    white-space: nowrap;
    align-self: flex-start;
}

.card-title {
    font-size: 15px;
    font-weight: bold;
    margin-bottom: 6px;
    color: var(--text-color);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
}

.card-info {
    font-size: 12px;
    line-height: 1.5;
    color: var(--gray-text);
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) transparent;
}
.card-info::-webkit-scrollbar { width: 3px; }
.card-info::-webkit-scrollbar-thumb { background-color: var(--scrollbar-thumb); border-radius: 3px; }

.card::after {
    content: "➡️"; 
    position: absolute;
    bottom: 10px;
    right: 10px;
    font-size: 14px;
    opacity: 0.2;
    color: blue;
    filter: hue-rotate(200deg);
}
.card:hover::after { opacity: 1; right: 8px; }

.pagination {
    margin-top: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}
.page-btn {
    text-decoration: none;
    color: var(--text-color);
    padding: 4px 10px;
    border: 1px solid var(--card-border);
    border-radius: 4px;
    background: var(--card-bg);
    font-size: 12px;
}
.page-btn.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.jump-input {
    width: 40px;
    padding: 4px;
    text-align: center;
    font-size: 12px;
    border: 1px solid var(--card-border);
    background: var(--bg-color);
    color: var(--text-color);
}

.debug-panel {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #ffeb3b;
    padding: 5px 15px;
    border-radius: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border: 1px solid #fbc02d;
    margin-right: 20px;
    color: #333;
    font-size: 13px;
    font-weight: bold;
    animation: fadeIn 0.5s;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

.float-btn {
    position: fixed;
    bottom: 60px;
    right: 30px;
    width: 40px;
    height: 40px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 999;
}
.float-btn img { width: 24px; height: 24px; }
.qr-popup {
    position: absolute;
    right: 50px;
    bottom: 0;
    background: #fff;
    padding: 8px;
    border-radius: 6px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
    display: none;
    width: 120px;
}
.qr-popup img { width: 100%; }
.float-btn:hover .qr-popup { display: block; }

@media(max-width: 768px) {
    .container { max-width: 100%; padding: 10px; }
    .card-grid { grid-template-columns: 1fr; }
    body { overflow-y: auto; height: auto; }
}