.site-header {
    background: var(--white);
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 999;
    overflow-x: hidden;
}
.header-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}
.brand-logo img {
    height: 42px;
    width: auto;
}
.header-nav {
    display: flex;
    gap: 36px;
}
.nav-item {
    font-size: 15px;
    color: var(--text-dark);
    position: relative;
}
.browse-dropdown-wrap .browse-panel{
    position:absolute;
    top:100%;
    left:0;
    background:#fff;
    box-shadow: 0 4px 14px rgba(0,0,0,.12);
    border-radius: var(--radius-md);
    padding:14px;
    display:none;
    z-index:1001;
    width:720px;
}
.browse-dropdown-wrap:hover .browse-panel{
    display:block;
}
.browse-tab-group{
    display:flex;
    gap:20px;
    margin-bottom:12px;
    border-bottom:1px solid #eee;
    padding-bottom:8px;
}
.browse-tab{
    cursor:pointer;
    padding:4px 2px;
}
.browse-tab.active{
    color:var(--theme-highlight);
    font-weight:600;
}
.browse-tab-content{
    display:grid;
    grid-template-columns: repeat(2, 1fr);
    gap:14px;
    display:none;
}
.browse-tab-content.content-short{
    grid-template-columns: 1fr;
}
.browse-tab-content.active{
    display:grid;
}
.category-item{
    display:block;
    padding:5px 3px;
    font-size:14px;
    cursor:pointer;
}
.category-item:hover{
    background:#f4f5f7;
    border-radius:6px;
}
.tag-core-highlight{
    color:var(--theme-highlight);
    font-weight:600;
}
.hot-tag-wrap { position: relative; }
.hot-badge {
    position: absolute;
    top: -8px;
    right: -22px;
    background: #ff5c5c;
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 8px;
}
.header-right-group {
    display: flex;
    align-items: center;
    gap: 20px;
}
.search-box input {
    background: #f3f4f6;
    border: none;
    padding: 8px 14px;
    border-radius: 20px;
    width: 260px;
    outline: none;
}
.lang-select {
    position: relative;
}
.lang-trigger {
    background: transparent;
    font-size: 14px;
    padding: 4px 8px;
}
.lang-dropdown {
    position: absolute;
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 10px;
    border-radius: var(--radius-md);
    display: none;
    min-width: 90px;
}
.lang-dropdown li {
    padding: 4px 6px;
    cursor: pointer;
}
.lang-dropdown li:hover {
    background: #f3f4f6;
}
.login-register-btn {
    background: var(--dark-navy);
    color: white;
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 14px;
}
.banner-carousel {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 24px;
    overflow-x: hidden;
}
.banner-item {
    background: #111;
    border-radius: var(--radius-lg);
    padding: 60px 40px;
    color: white;
    position: relative;
    overflow: hidden;
}
.status-tag {
    background: #ffc107;
    color: #000;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    display: inline-block;
    margin-bottom: 16px;
}
.banner-item h2 {
    font-size: 46px;
    margin-bottom: 16px;
}
.banner-desc {
    font-size: 18px;
    color: #ddd;
    max-width: 420px;
    margin-bottom: 28px;
}
.banner-bottom-row {
    display: flex;
    align-items: center;
    gap: 24px;
}
.banner-cta-btn {
    background: var(--orange-main);
    color: white;
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 16px;
}
.banner-deadline {
    color: #ccc;
}
.carousel-dots {
    display: flex;
    gap: 10px;
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
}
.dot.active { background: white; }
.section-block {
    max-width: 1400px;
    margin: 50px auto;
    padding: 0 24px;
    overflow-x: hidden;
}
.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 24px;
}
.title-group h2 {
    font-size: 28px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.section-subtitle {
    color: var(--text-gray);
    margin-top: 6px;
}
.more-link {
    color: var(--orange-main);
    font-size: 15px;
}
.book-card-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 24px;
}
.book-card {
    transition: transform 0.2s ease;
    min-width: 130px;
}
.book-card:hover {
    transform: translateY(-6px);
}
.cover-wrap {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 12px;
}
.age-tag {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(0,0,0,0.6);
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 6px;
}
.book-name {
    font-size: 16px;
    margin-bottom: 4px;
}
.book-author {
    color: var(--text-gray);
    font-size: 13px;
    margin-bottom: 8px;
}
.book-meta-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
}
.book-score { color: #ffb800; }
.book-cat {
    padding: 2px 6px;
    border-radius: 4px;
    background: #f0f0f0;
}
.dual-banner-row {
    max-width: 1400px;
    margin: 60px auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    overflow-x: hidden;
}
.promo-card {
    border-radius: var(--radius-lg);
    padding: 50px 40px;
    color: white;
    position: relative;
}
.writer-join-card { background: var(--dark-navy); }
.app-download-card { background: var(--orange-main); }
.promo-card h2 {
    font-size: 42px;
    margin-bottom: 16px;
}
.promo-desc {
    font-size: 17px;
    opacity: 0.9;
    max-width: 460px;
    margin-bottom: 30px;
}
.promo-btn {
    background: white;
    color: var(--dark-navy);
    padding: 14px 32px;
    border-radius: 30px;
    font-size: 16px;
}
.store-btn-group {
    display: flex;
    gap: 16px;
}
.app-store-btn, .google-play-btn {
    background: #000;
    color: white;
    padding: 10px 18px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}
.site-footer {
    background: var(--dark-navy);
    color: #d0d8e8;
    padding: 60px 0 30px;
    margin-top: 80px;
    overflow-x: hidden;
}
.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 40px;
}
.footer-col-title {
    font-size: 20px;
    color: white;
    margin-bottom: 20px;
}
.brand-col .brand-logo img { height: 38px; margin-bottom: 16px; }
.brand-intro { margin-bottom: 24px; line-height: 1.7; }
.social-icon-row { display: flex; gap: 16px; }
.social-item {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}
.cat-tag-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.cat-tag {
    background: rgba(255,255,255,0.1);
    padding: 6px 10px;
    border-radius: 14px;
    text-align: center;
    font-size: 13px;
}
.footer-link-list li { margin-bottom: 12px; }
.footer-link-list a:hover { color: white; }
.community-desc { margin-bottom: 20px; }
.qr-download-box {
    background: rgba(255,255,255,0.08);
    padding: 16px;
    border-radius: var(--radius-md);
}
.qr-layout {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}
.download-qr { width: 80px; }
.footer-bottom-bar {
    max-width: 1400px;
    margin: 50px auto 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    color: #99a4bc;
}
.region-tag-row { display: flex; gap: 30px; }
@media screen and (max-width:1024px) {
    .book-card-grid { grid-template-columns: repeat(3, 1fr); }
    .dual-banner-row { grid-template-columns: 1fr; }
    .footer-container { grid-template-columns: repeat(2, 1fr); }
    .header-nav { gap: 20px; }
    .search-box input { width: 160px; }
    .browse-dropdown-wrap .browse-panel{
        width:560px;
    }
}
@media screen and (max-width:768px) {
    .header-nav { display: none; }
    .header-right-group { gap: 10px; }
    .search-box { display: none; }
    .banner-item h2 { font-size: 28px; }
    .book-card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-container { grid-template-columns: 1fr; }
    .footer-bottom-bar { flex-direction: column; gap: 12px; }
    .browse-dropdown-wrap .browse-panel{
        width:calc(100vw - 32px);
        left:-8px;
    }
    .browse-tab-content{
        grid-template-columns: repeat(2, 1fr);
    }
}
@media screen and (max-width:480px) {
    .book-card-grid { grid-template-columns: 1fr; }
    .browse-tab-content{
        grid-template-columns: 1fr;
    }
}