/* ========== 基础重置 ========== */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #4A6CF7;
    --primary-light: #6B8AFF;
    --bg: #F5F6FA;
    --card-bg: rgba(255, 255, 255, 0.55);
    --text: #111111;
    --text-light: #888888;
    --border: rgba(255, 255, 255, 0.7);
    --radius: 20px;
    --shadow: 0 8px 24px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,0.9);

    --glass-bg: linear-gradient(135deg, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.35) 100%);
    --glass-border: rgba(255,255,255,0.8);
    --glass-blur: blur(24px) saturate(200%);
    --glass-shadow: 0 8px 24px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background:
        radial-gradient(circle at 15% 10%, #dfe9ff 0%, transparent 45%),
        radial-gradient(circle at 85% 20%, #ffe4ef 0%, transparent 45%),
        radial-gradient(circle at 50% 90%, #e0f7ff 0%, transparent 50%),
        #F0F2F7;
    background-attachment: fixed;
    color: var(--text);
    max-width: 750px;
    margin: 0 auto;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 20px;
    min-height: 100vh;
}

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

/* ========== 通用玻璃卡片 ========== */
.header,
.banner-section,
.notice-section,
.icon-nav-section,
.card-nav-group,
.card-nav-item,
.big-card,
.modal-content,
.toast,
.side-menu,
.share-btn,
.icon-tab.active {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* ========== 顶部导航 ========== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-top: none;
    border-left: none;
    border-right: none;
    border-bottom-left-radius: var(--radius);
    border-bottom-right-radius: var(--radius);
}

.header-left { display: flex; align-items: center; gap: 10px; }

.header-logo {
    height: 40px; width: 40px;
    border-radius: 12px;
    object-fit: cover;
    border: 1px solid rgba(255,255,255,0.9);
    box-shadow: 0 4px 14px rgba(0,0,0,0.1);
}

.header-logo-icon {
    height: 40px; width: 40px;
    border-radius: 12px;
    background: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.8);
    display: flex; align-items: center; justify-content: center;
    font-size: 22px;
}

.header-info { display: flex; flex-direction: column; gap: 2px; }
.header-welcome { font-size: 13px; font-weight: 700; color: var(--text); }
.header-domain { display: flex; align-items: center; gap: 4px; }
.domain-text {
    font-size: 12px; font-weight: 600; letter-spacing: 1px;
    animation: domainColor 3s ease-in-out infinite;
}
.domain-badge {
    display: inline-flex; align-items: center; justify-content: center;
    width: 14px; height: 14px; border-radius: 50%;
    background: #52C41A; color: #fff; font-size: 9px; font-weight: 700;
}

@keyframes domainColor {
    0%, 100% { color: var(--primary); }
    33% { color: #52C41A; }
    66% { color: #FAAD14; }
}

.menu-btn {
    background: rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.7);
    border-radius: 999px;
    cursor: pointer;
    padding: 8px 12px;
    display: flex; flex-direction: column; gap: 4px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}
.menu-btn span {
    display: block; width: 20px; height: 2px;
    background: var(--text); border-radius: 2px; transition: 0.3s;
}

/* ========== 侧边菜单 ========== */
.menu-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 200; opacity: 0; visibility: hidden; transition: 0.3s;
}
.menu-overlay.show { opacity: 1; visibility: visible; }
.side-menu {
    position: fixed; top: 0; right: -280px; width: 280px; height: 100%;
    z-index: 300;
    transition: 0.3s ease;
    border-top-left-radius: var(--radius);
    border-bottom-left-radius: var(--radius);
    overflow: hidden;
}
.side-menu.open { right: 0; }
.menu-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    font-size: 16px; font-weight: 700; color: var(--primary);
    background: transparent;
    box-shadow: none;
}
.menu-close {
    background: none; border: none; font-size: 24px;
    cursor: pointer; color: var(--text-light); padding: 4px;
}
.menu-items { padding: 12px 0; }
.menu-item {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 24px; font-size: 15px; color: var(--text);
    transition: background 0.2s;
}
.menu-item:hover { background: rgba(255,255,255,0.4); }
.menu-icon { font-size: 20px; }

/* ========== Banner轮播 ========== */
.banner-section {
    position: relative; margin: 12px;
    border-radius: var(--radius); overflow: hidden;
    aspect-ratio: 16/8; background: #e0e0e0;
}
.banner-wrapper {
    display: flex; transition: transform 0.5s ease; height: 100%;
}
.banner-slide { flex: 0 0 100%; height: 100%; }
.banner-slide img { width: 100%; height: 100%; object-fit: cover; display: block; }
.banner-dots {
    position: absolute; bottom: 10px; left: 50%; transform: translateX(-50%);
    display: flex; gap: 6px;
    padding: 6px 12px;
    background: rgba(255,255,255,0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.4);
}
.dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,0.6); cursor: pointer; transition: 0.3s;
}
.dot.active { background: #fff; width: 20px; border-radius: 4px; }

/* ========== 公告滚动 ========== */
.notice-section {
    display: flex; align-items: center;
    margin: 12px; padding: 14px 18px;
    border-radius: var(--radius); overflow: hidden;
}
.notice-label {
    flex-shrink: 0; font-size: 13px; font-weight: 700;
    color: var(--primary); margin-right: 10px;
}
.notice-scroll { flex: 1; overflow: hidden; height: 20px; }
.notice-content {
    display: flex; white-space: nowrap;
    animation: noticeScroll 12s linear infinite;
}
.notice-text {
    flex-shrink: 0; font-size: 13px; font-weight: 700;
    padding-right: 50px; color: var(--text);
}
@keyframes noticeScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========== 图标导航 ========== */
.icon-nav-section {
    margin: 12px;
    border-radius: var(--radius); overflow: hidden;
}
.icon-nav-tabs {
    display: flex; padding: 12px 16px 0; gap: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    justify-content: center;
    flex-wrap: nowrap; overflow-x: auto;
}
.icon-nav-tabs::-webkit-scrollbar { display: none; }
.icon-tab {
    flex: 1; padding: 12px 0;
    border: 1px solid rgba(255,255,255,0.5);
    border-radius: 999px;
    background: rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    font-size: 15px;
    cursor: pointer; transition: 0.3s;
    white-space: nowrap; color: #666;
    font-weight: 700; text-align: center;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}
.icon-tab.active {
    color: var(--text);
    background: linear-gradient(135deg, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.4) 100%);
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: 0 4px 14px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,1);
}

.icon-nav-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 8px; padding: 16px 12px;
}
.icon-nav-item {
    display: flex; flex-direction: column;
    align-items: center; gap: 8px;
    padding: 12px 4px; border-radius: 12px;
    transition: background 0.2s;
}
.icon-nav-item:active { background: rgba(255,255,255,0.4); }
.icon-nav-icon {
    font-size: 28px;
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.7);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}
.icon-nav-icon img {
    width: 100%; height: 100%;
    object-fit: cover; border-radius: 14px;
}
.icon-nav-title {
    font-size: 13px; color: var(--text);
    text-align: center;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
    max-width: 100%; font-weight: 700;
}
.empty-tip {
    grid-column: 1 / -1; text-align: center;
    color: var(--text-light); font-size: 14px; padding: 20px;
}

/* ========== 卡片导航 ========== */
.card-nav-section { margin: 0 12px; }
.card-nav-group {
    margin-bottom: 12px;
    border-radius: var(--radius); overflow: hidden;
}
.card-nav-title {
    font-size: 16px; font-weight: 800;
    padding: 14px 16px 8px; color: var(--text);
    position: relative; padding-left: 24px;
}
.card-nav-title::before {
    content: ''; position: absolute;
    left: 14px; top: 18px; bottom: 10px;
    width: 3px; background: var(--primary); border-radius: 2px;
}
.card-nav-grid { padding: 8px 12px 14px; }
.card-nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 16px; border-radius: 14px;
    transition: opacity 0.2s, transform 0.15s;
    background: rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.7);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.9);
}
.card-nav-item:active { opacity: 0.9; transform: scale(0.98); }
.card-nav-item + .card-nav-item { margin-top: 8px; }
.card-nav-icon {
    font-size: 24px;
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.8);
    border-radius: 12px; flex-shrink: 0; overflow: hidden;
}
.card-nav-icon img {
    width: 100%; height: 100%;
    object-fit: cover; border-radius: 12px;
}
.card-nav-info { flex: 1; min-width: 0; }
.card-nav-name { font-size: 15px; font-weight: 700; color: var(--text); }
.card-nav-desc {
    font-size: 12px; color: var(--text-light); margin-top: 4px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.card-nav-arrow { color: var(--text-light); font-size: 18px; flex-shrink: 0; margin-left: 4px; }

/* ========== 大卡片 ========== */
.big-card-section {
    margin: 0 12px;
    display: flex; flex-direction: column; gap: 12px;
}
.big-card {
    display: block;
    border-radius: var(--radius); overflow: hidden;
    transition: transform 0.2s;
}
.big-card:active { transform: scale(0.98); }
.big-card-img { width: 100%; aspect-ratio: 16/9; overflow: hidden; }
.big-card-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.big-card-info { padding: 14px 16px; }
.big-card-title { font-size: 16px; font-weight: 800; color: var(--text); margin-bottom: 6px; }
.big-card-desc {
    font-size: 13px; color: var(--text-light); line-height: 1.5;
    display: -webkit-box; -webkit-line-clamp: 2;
    -webkit-box-orient: vertical; overflow: hidden;
}

/* ========== 底部 ========== */
.footer {
    text-align: center; padding: 24px 16px;
    color: var(--text-light); font-size: 12px;
}

/* ========== 弹窗 ========== */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 400; display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden; transition: 0.3s;
}
.modal-overlay.show { opacity: 1; visibility: visible; }
.modal-content {
    border-radius: var(--radius);
    width: 85%; max-width: 360px;
    overflow: hidden;
    transform: scale(0.9);
    transition: 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.modal-overlay.show .modal-content { transform: scale(1); }
.modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.5);
}
.modal-header h3 { font-size: 16px; font-weight: 800; color: var(--text); }
.modal-close {
    background: rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.7);
    font-size: 20px; cursor: pointer; color: var(--text);
    width: 30px; height: 30px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    line-height: 1;
}
.modal-body { padding: 20px; }
.modal-body p { font-size: 15px; line-height: 1.6; color: var(--text); }
.share-actions { margin-top: 16px; text-align: center; }
.share-btn {
    padding: 12px 32px;
    border-radius: 999px;
    color: var(--text);
    font-size: 14px; font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s;
    background: linear-gradient(135deg, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.4) 100%);
    border: 1px solid rgba(255,255,255,0.8);
    box-shadow: 0 4px 14px rgba(0,0,0,0.06), inset 0 1px 0 rgba(255,255,255,1);
}
.share-btn:active { transform: scale(0.96); }

/* ========== Toast ========== */
.toast {
    position: fixed; bottom: 80px; left: 50%;
    transform: translateX(-50%) translateY(20px);
    color: var(--text);
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 14px; font-weight: 600;
    z-index: 999;
    opacity: 0; visibility: hidden; transition: 0.3s;
}
.toast.show {
    opacity: 1; visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ========== 响应式 ========== */
@media (min-width: 768px) {
    body { max-width: 500px; }
    .icon-nav-grid { grid-template-columns: repeat(5, 1fr); }
}

/* 兼容不支持 backdrop-filter 的浏览器 */
@supports not (backdrop-filter: blur(1px)) {
    .header,
    .banner-section,
    .notice-section,
    .icon-nav-section,
    .card-nav-group,
    .card-nav-item,
    .big-card,
    .modal-content,
    .toast,
    .side-menu,
    .share-btn,
    .icon-tab,
    .icon-tab.active,
    .menu-btn {
        background: rgba(255, 255, 255, 0.92) !important;
    }
}