:root {
    --primary-black: #111111;
    --text-gray: #94a3b8;
    --light-gray: #cbd5e1;
    --border-color: #f1f5f9;
}

body {
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--primary-black);
    overflow-x: hidden;
}

.glow-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: 
        radial-gradient(circle at 0% 0%, rgba(67, 150, 176, 0.06) 0%, transparent 40%),
        radial-gradient(circle at 100% 30%, rgba(251, 211, 141, 0.08) 0%, transparent 40%);
    z-index: -1;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 60px 30px 120px;
}

/* Header */
.header-section {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 60px;
}

.page-title {
    font-size: 48px;
    margin: 0;
    letter-spacing: 4px;
    font-weight: 900;
}

.page-subtitle {
    font-size: 12px;
    color: var(--text-gray);
    margin: 8px 0 0;
}

.history-link {
    text-align: right;
    cursor: pointer;
}

.history-tag {
    background: var(--primary-black);
    color: #fff;
    font-size: 10px;
    padding: 2px 6px;
    display: inline-block;
    margin-bottom: 4px;
}

.history-link span {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

.line-guide {
    width: 40px;
    height: 2px;
    background: var(--primary-black);
    margin-top: 8px;
    float: right;
}

/* List Items */
.selection-list {
    display: flex;
    flex-direction: column;
}

.selection-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

.selection-item.active {
    border-left: 4px solid var(--primary-black);
    padding-left: 20px;
}

.item-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.tag {
    font-size: 10px;
    font-weight: 800;
    padding: 2px 8px;
    border-radius: 2px;
    background: #f1f5f9;
    color: var(--text-gray);
}

.tag.pro { color: #9b59b6; background: #f9f2ff; }

.count {
    font-size: 12px;
    color: var(--light-gray);
}

.item-title {
    font-size: 24px;
    margin: 0;
}

.item-desc {
    font-size: 14px;
    color: var(--text-gray);
    margin: 6px 0 0;
}

.item-img {
    font-size: 40px;
    font-weight: 900;
    opacity: 0.1;
    filter: grayscale(1);
}

.active .item-img {
    opacity: 1;
    filter: grayscale(0);
    color: var(--primary-black);
}

/* Footer */
.footer-bar {
    position: fixed;
    bottom: 0; left: 0; width: 100%;
    padding: 20px 30px 40px;
    display: flex;
    gap: 20px;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
    box-sizing: border-box;
}

.share-btn {
    width: 60px;
    height: 60px;
    border: 2px solid var(--primary-black);
    display: flex;
    align-items: center;
    justify-content: center;
}

.dot-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
}

.dot-grid span {
    width: 8px;
    height: 8px;
    background: var(--primary-black);
}

.start-btn {
    flex: 1;
    background: var(--primary-black);
    color: #fff;
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}