* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --primary-soft: #eff6ff;
    --accent: #0f766e;
    --success: #16a34a;
    --warning: #d97706;
    --error: #dc2626;
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --surface: #ffffff;
    --surface-raised: #ffffff;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
    --radius: 8px;
    --header-height: 68px;
}

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background:
        linear-gradient(180deg, #ffffff 0%, #f8fafc 42%, #eef4ff 100%);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

button,
input,
textarea,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.container {
    width: min(1160px, calc(100% - 40px));
    margin: 0 auto;
}

.icon {
    width: 1em;
    height: 1em;
    stroke-width: 2;
    flex: 0 0 auto;
}

.page-enter {
    animation: pageIn 0.42s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes pageIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.86);
    border-bottom: 1px solid rgba(226, 232, 240, 0.86);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 28px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    letter-spacing: 0;
    color: var(--text);
    white-space: nowrap;
}

.logo-mark {
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    color: #fff;
    background: linear-gradient(135deg, var(--primary), #38bdf8);
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.22);
}

.nav {
    display: flex;
    gap: 4px;
}

.nav a,
.mobile-menu a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    transition: background .2s ease, color .2s ease, transform .2s ease;
}

.nav a {
    padding: 9px 12px;
}

.nav a:hover,
.mobile-menu a:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

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

.user-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px 5px 5px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.avatar,
.comment-avatar,
.profile-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    font-weight: 800;
}

.avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
}

.avatar-image {
    display: block;
    object-fit: cover;
    background: #e2e8f0;
}

.icon-btn {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    background: var(--surface);
    transition: all .2s ease;
}

.icon-btn:hover {
    color: var(--primary);
    border-color: #bfdbfe;
    background: var(--primary-soft);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 12px;
    right: 12px;
    z-index: 99;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .96);
    box-shadow: var(--shadow);
    backdrop-filter: blur(16px);
}

.mobile-menu.open {
    display: grid;
    animation: menuIn .22s ease both;
}

.mobile-menu a {
    padding: 13px 12px;
}

@keyframes menuIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main {
    min-height: calc(100vh - var(--header-height));
    padding-bottom: 64px;
}

.hero {
    padding: 72px 0 34px;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(320px, .9fr);
    gap: 42px;
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 18px;
    padding: 7px 12px;
    border: 1px solid #bfdbfe;
    border-radius: 999px;
    color: var(--primary);
    background: var(--primary-soft);
    font-size: 13px;
    font-weight: 700;
}

.hero h1 {
    max-width: 760px;
    font-size: clamp(36px, 5vw, 62px);
    line-height: 1.06;
    letter-spacing: 0;
    margin-bottom: 18px;
}

.hero p {
    max-width: 650px;
    color: var(--text-secondary);
    font-size: 18px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.home-search {
    width: min(720px, 100%);
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 10px;
    margin-top: 18px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .94);
    box-shadow: var(--shadow-sm);
}

.home-search label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    color: var(--text-muted);
}

.home-search input {
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--text);
    padding: 0 2px;
}

.hero-panel,
.post-form,
.post-detail,
.profile-header,
.admin-panel,
.comment,
.empty-state {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: var(--shadow-sm);
}

.hero-panel {
    padding: 24px;
    box-shadow: var(--shadow);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 800;
}

.mini-list {
    display: grid;
    gap: 12px;
}

.mini-item {
    display: flex;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius);
    background: var(--bg-soft);
}

.mini-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    color: var(--primary);
    background: #dbeafe;
}

.quick-section {
    display: none;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.quick-item {
    display: grid;
    justify-items: center;
    gap: 8px;
    padding: 14px 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, .94);
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    font-size: 13px;
    font-weight: 800;
    transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.quick-item:hover {
    transform: translateY(-2px);
    border-color: #bfdbfe;
    box-shadow: var(--shadow);
}

.quick-icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    color: var(--primary);
    background: var(--primary-soft);
    font-size: 18px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 9px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-weight: 700;
    font-size: 14px;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    border-color: #bfdbfe;
    box-shadow: 0 10px 22px rgba(15, 23, 42, .08);
}

.btn-primary {
    color: #fff;
    border-color: var(--primary);
    background: var(--primary);
    box-shadow: 0 12px 22px rgba(37, 99, 235, .2);
}

.btn-primary:hover {
    background: var(--primary-strong);
}

.btn-ghost {
    background: transparent;
}

.btn-danger {
    color: #fff;
    border-color: var(--error);
    background: var(--error);
}

.btn-sm {
    min-height: 34px;
    padding: 6px 11px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
}

.section {
    margin-top: 34px;
}

.section-head {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.section-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    line-height: 1.2;
}

.section-subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 5px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.stat-card,
.category-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}

.stat-card {
    padding: 22px;
}

.stat-card:hover,
.category-card:hover,
.post-card:hover {
    transform: translateY(-3px);
    border-color: #bfdbfe;
    box-shadow: var(--shadow);
}

.stat-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.stat-number {
    margin-top: 14px;
    font-size: 34px;
    font-weight: 850;
    letter-spacing: 0;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 14px;
}

.category-card {
    padding: 18px;
    cursor: pointer;
}

.category-icon {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    color: var(--primary);
    background: var(--primary-soft);
    margin-bottom: 16px;
}

.category-name {
    font-size: 17px;
    font-weight: 800;
    margin-bottom: 5px;
}

.category-desc {
    min-height: 44px;
    color: var(--text-secondary);
    font-size: 14px;
}

.category-meta,
.post-category {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 12px;
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
}

.post-list {
    display: grid;
    gap: 12px;
}

.post-card {
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease;
}

.post-card-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.post-card-info {
    flex: 1;
    min-width: 0;
}

.post-card-title {
    font-size: 16px;
    line-height: 1.4;
    font-weight: 800;
}

.post-card-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    flex-shrink: 0;
    color: var(--text-muted);
    font-size: 12px;
}

.post-card-stats span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.post-card-stats .icon {
    width: 14px;
    height: 14px;
}

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 14px;
    color: var(--text-muted);
    font-size: 13px;
}

.post-card-meta span,
.post-detail-meta span,
.profile-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.post-card-tags,
.post-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-top: 12px;
}

.subcategory-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 16px;
}

.subcategory-tab {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 800;
    transition: all .2s ease;
}

.subcategory-tab span {
    color: var(--text-muted);
    font-size: 12px;
}

.subcategory-tab:hover,
.subcategory-tab.active {
    border-color: #bfdbfe;
    background: var(--primary-soft);
    color: var(--primary);
}

.subcategory-label {
    color: var(--accent);
}

.tag,
.status-pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 9px;
    font-size: 12px;
    font-weight: 700;
}

.tag {
    color: #1e40af;
    background: #dbeafe;
}

.status-pill {
    color: var(--success);
    background: #dcfce7;
}

.status-pill.muted {
    color: var(--text-muted);
    background: #f1f5f9;
}

.status-pill.pending {
    color: var(--warning);
    background: #ffedd5;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--text-muted);
    font-size: 14px;
}

.breadcrumb a {
    color: var(--primary);
    font-weight: 700;
}

.post-detail,
.post-form,
.admin-panel {
    padding: 28px;
}

.post-detail h1 {
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.15;
    margin-bottom: 14px;
}

.post-detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 14px;
}

.post-detail-content {
    margin-top: 24px;
    color: #1f2937;
    font-size: 16px;
    line-height: 1.85;
}

.post-detail-content h3 {
    margin: 24px 0 10px;
    font-size: 21px;
}

.post-detail-content p {
    margin: 10px 0;
}

.post-detail-content a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    word-break: break-all;
    transition: color .15s ease;
}

.post-detail-content a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

.post-media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
    margin-top: 24px;
}

.post-media-image {
    display: block;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-soft);
    aspect-ratio: 4 / 3;
}

.post-media-image img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: transform .25s ease;
}

.post-media-image:hover img {
    transform: scale(1.03);
}

.post-action-row {
    margin-top: 24px;
}

.post-action-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 44px;
    padding: 0 22px;
    border-radius: 5px;
    background: #1677ff;
    color: #fff;
    font-size: 16px;
    font-weight: 800;
    box-shadow: 0 10px 18px rgba(22, 119, 255, .22);
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.post-action-button:hover {
    background: #0f67e8;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 14px 24px rgba(22, 119, 255, .26);
}

.post-action-button.locked {
    background: #0f172a;
    box-shadow: 0 10px 18px rgba(15, 23, 42, .18);
}

.post-action-button.locked:hover {
    background: #1e293b;
}

.post-action-button .icon {
    width: 18px;
    height: 18px;
}

.download-login-hint {
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 13px;
}

.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 4px;
    color: #1677ff;
    background: #fff;
    font-size: 12px;
    font-weight: 900;
    line-height: 1;
}

.comments-section {
    margin-top: 28px;
}

.comment-form {
    display: grid;
    gap: 10px;
    margin: 12px 0 18px;
}

.comment {
    padding: 16px;
    margin-bottom: 10px;
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.comment-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
}

.comment-author {
    font-weight: 800;
}

.comment-time {
    color: var(--text-muted);
    font-size: 13px;
}

.comment-content {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-group {
    display: grid;
    gap: 7px;
    margin-bottom: 16px;
}

.form-group.full {
    grid-column: 1 / -1;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 800;
}

.form-hint {
    color: var(--text-muted);
    font-size: 12px;
}

.form-group input,
.form-group textarea,
.form-group select,
.input {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    padding: 11px 12px;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.form-group textarea,
.input {
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus,
.input:focus {
    outline: none;
    border-color: #93c5fd;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

.form-footer {
    margin-top: 14px;
    color: var(--text-muted);
    text-align: center;
    font-size: 14px;
}

.form-footer a {
    color: var(--primary);
    font-weight: 800;
}

.import-panel {
    margin-top: 18px;
}

.import-panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 18px;
}

.import-panel-head h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 20px;
    line-height: 1.25;
}

.import-panel-head p {
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 14px;
}

.import-columns {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 10px;
    margin: 4px 0 14px;
}

.import-columns div {
    min-height: 74px;
    display: grid;
    align-content: center;
    gap: 4px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-soft);
}

.import-columns strong {
    color: var(--primary);
    font-size: 13px;
}

.import-columns span {
    color: var(--text);
    font-weight: 800;
}

.import-note {
    margin-bottom: 16px;
    padding: 12px 14px;
    border: 1px solid #fed7aa;
    border-radius: var(--radius);
    background: #fff7ed;
    color: #9a3412;
    font-size: 13px;
    font-weight: 700;
}

.import-note p {
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.import-note .icon {
    margin-top: 3px;
}

.import-reference {
    display: grid;
    gap: 10px;
    margin-bottom: 16px;
    padding-top: 14px;
    border-top: 1px dashed var(--border);
}

.import-reference strong {
    color: var(--text-secondary);
    font-size: 13px;
}

.import-reference div {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.import-reference span {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 9px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: #fff;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
}

.import-report {
    display: grid;
    gap: 10px;
    margin-bottom: 18px;
    padding: 14px;
    border-radius: var(--radius);
    font-size: 13px;
}

.import-report.success {
    border: 1px solid #bbf7d0;
    background: #f0fdf4;
    color: #166534;
}

.import-report.error {
    border: 1px solid #fecaca;
    background: #fef2f2;
    color: #991b1b;
}

.import-report-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.import-report ul {
    display: grid;
    gap: 5px;
    padding-left: 24px;
}

.auth-shell {
    width: min(440px, calc(100% - 40px));
    margin: 48px auto 0;
}

.profile-header {
    display: flex;
    gap: 22px;
    padding: 28px;
    align-items: center;
}

.profile-avatar-wrap {
    flex: 0 0 auto;
}

.profile-avatar {
    width: 82px;
    height: 82px;
    border-radius: 20px;
    font-size: 32px;
    object-fit: cover;
}

.profile-info h1,
.profile-info h2 {
    font-size: 28px;
}

.profile-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 8px;
    color: var(--text-muted);
    font-size: 14px;
}

.profile-bio {
    margin-top: 10px;
    color: var(--text-secondary);
}

.avatar-form,
.avatar-remove-form {
    display: inline-flex;
    margin-top: 16px;
    margin-right: 8px;
    vertical-align: top;
}

.avatar-upload {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 34px;
    padding: 6px 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    cursor: pointer;
}

.avatar-upload:hover {
    transform: translateY(-1px);
    border-color: #bfdbfe;
    box-shadow: 0 10px 22px rgba(15, 23, 42, .08);
}

.avatar-upload input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.empty-state {
    padding: 44px 20px;
    text-align: center;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    border-radius: var(--radius);
    color: var(--primary);
    background: var(--primary-soft);
    font-size: 24px;
}

.toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    z-index: 300;
    transform: translateX(-50%) translateY(90px);
    opacity: 0;
    min-width: 220px;
    max-width: calc(100vw - 32px);
    padding: 13px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    box-shadow: var(--shadow);
    text-align: center;
    font-weight: 700;
    transition: transform .36s cubic-bezier(.2, .8, .2, 1), opacity .36s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    border-color: #bbf7d0;
    color: var(--success);
}

.toast.error {
    border-color: #fecaca;
    color: var(--error);
}

.admin-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}

.admin-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

.admin-inline-create {
    padding-bottom: 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid var(--border);
}

.category-admin-list {
    display: grid;
    gap: 12px;
}

.category-admin-card {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr) auto;
    gap: 12px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-soft);
}

.category-admin-icon {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    color: var(--primary);
    background: var(--primary-soft);
}

.category-admin-fields {
    display: grid;
    grid-template-columns: minmax(120px, .8fr) minmax(120px, .7fr) minmax(180px, 1.4fr) auto;
    gap: 8px;
    align-items: center;
}

.subcategory-admin-fields {
    display: grid;
    grid-template-columns: minmax(130px, .8fr) minmax(140px, .8fr) minmax(180px, 1.4fr) auto;
    gap: 8px;
    align-items: center;
}

.subcategory-admin-fields input,
.subcategory-admin-fields select {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 9px 10px;
    background: #fff;
}

.category-admin-fields input {
    min-width: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 9px 10px;
}

.table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

.admin-table th,
.admin-table td {
    padding: 13px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
    font-size: 14px;
}

.admin-table th {
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
}

.admin-table .check-cell {
    width: 42px;
    text-align: center;
}

.admin-table input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.inline-form {
    display: inline-flex;
}

.site-footer {
    border-top: 1px solid var(--border);
    background: #fff;
    padding: 28px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    color: var(--text-muted);
    font-size: 14px;
}

.footer-logo {
    margin-bottom: 8px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.footer-links a,
.footer-link-button {
    color: var(--text-secondary);
    font-weight: 700;
}

.footer-link-button {
    border: 0;
    background: transparent;
    padding: 0;
}

.footer-link-button:hover {
    color: var(--primary);
}

.modal-open {
    overflow: hidden;
}

.contact-modal {
    position: fixed;
    inset: 0;
    z-index: 500;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.contact-modal.open {
    display: flex;
}

.contact-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, .42);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    animation: fadeIn .18s ease both;
}

.contact-modal-dialog {
    position: relative;
    z-index: 1;
    width: min(420px, 100%);
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    box-shadow: var(--shadow);
    animation: modalIn .22s cubic-bezier(.2, .8, .2, 1) both;
}

.contact-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
}

.contact-modal-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    border-radius: var(--radius);
    color: var(--primary);
    background: var(--primary-soft);
}

.contact-modal-dialog h2 {
    font-size: 22px;
    line-height: 1.25;
    margin-bottom: 8px;
}

.contact-modal-dialog p {
    margin-bottom: 18px;
    color: var(--text-secondary);
    font-weight: 700;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(10px) scale(.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 860px) {
    .container {
        width: min(100% - 28px, 1160px);
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: inline-flex;
    }

    .hero {
        padding: 34px 0 18px;
    }

    .hero-grid,
    .form-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 34px;
    }

    .hero p {
        font-size: 16px;
    }

    .hero-panel {
        padding: 16px;
    }

    .quick-section {
        display: block;
        margin-top: 14px;
    }

    .stats-grid,
    .admin-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .profile-header,
    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }

    .category-admin-card,
    .category-admin-fields,
    .subcategory-admin-fields {
        grid-template-columns: 1fr;
    }

    .import-panel-head {
        align-items: stretch;
        flex-direction: column;
    }

    .import-panel-head .btn {
        width: 100%;
    }

    .import-columns {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    :root {
        --header-height: 60px;
    }

    body {
        background: linear-gradient(180deg, #ffffff 0%, #f8fafc 55%, #eef4ff 100%);
    }

    .container {
        width: min(100% - 24px, 1160px);
    }

    .header-inner {
        gap: 10px;
    }

    .logo {
        gap: 8px;
        font-size: 15px;
    }

    .logo-mark {
        width: 32px;
        height: 32px;
    }

    .icon-btn {
        width: 36px;
        height: 36px;
    }

    .header-right .user-chip span:last-child,
    .header-right .btn-ghost {
        display: none;
    }

    .hero {
        padding: 28px 0 10px;
    }

    .eyebrow {
        margin-bottom: 12px;
        padding: 6px 10px;
        font-size: 12px;
    }

    .hero h1 {
        font-size: 30px;
        line-height: 1.12;
        margin-bottom: 12px;
    }

    .hero p {
        font-size: 15px;
    }

    .hero-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        margin-top: 18px;
    }

    .home-search {
        grid-template-columns: auto minmax(0, 1fr);
        gap: 8px;
        margin-top: 14px;
    }

    .home-search .btn {
        grid-column: span 2;
        width: 100%;
    }

    .hero-panel {
        display: none;
    }

    .quick-grid {
        gap: 8px;
    }

    .quick-item {
        min-height: 82px;
        padding: 12px 4px;
        font-size: 12px;
    }

    .quick-icon {
        width: 34px;
        height: 34px;
        border-radius: 10px;
    }

    .hero-actions,
    .section-head {
        align-items: stretch;
        flex-direction: column;
    }

    .hero-actions .btn {
        width: auto;
        min-height: 42px;
        padding: 8px 10px;
        font-size: 13px;
    }

    .btn-block {
        width: 100%;
    }

    .section {
        margin-top: 26px;
    }

    .section-head {
        gap: 8px;
        margin-bottom: 12px;
    }

    .section-title {
        font-size: 20px;
    }

    .section-subtitle {
        font-size: 13px;
    }

    .stats-grid,
    .admin-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .stat-card {
        padding: 14px;
    }

    .stat-top {
        font-size: 12px;
    }

    .stat-number {
        margin-top: 8px;
        font-size: 24px;
    }

    .categories-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .category-card {
        min-height: 152px;
        padding: 14px 12px;
    }

    .category-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 10px;
    }

    .category-name {
        font-size: 15px;
    }

    .category-desc {
        min-height: 38px;
        display: -webkit-box;
        overflow: hidden;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        font-size: 12px;
    }

    .category-meta {
        margin-top: 8px;
        font-size: 12px;
    }

    .post-list {
        gap: 10px;
    }

    .post-card {
        padding: 11px 13px;
    }

    .post-card-main {
        gap: 8px;
    }

    .post-card-title {
        display: -webkit-box;
        overflow: hidden;
        -webkit-line-clamp: 1;
        -webkit-box-orient: vertical;
        font-size: 15px;
    }

    .post-category {
        margin-top: 4px;
        font-size: 11px;
    }

    .post-card-stats {
        font-size: 11px;
        gap: 3px;
    }

    .post-card-stats .icon {
        width: 12px;
        height: 12px;
    }

    .post-card-tags {
        gap: 4px;
    }

    .tag {
        padding: 2px 6px;
        font-size: 10px;
    }

    .post-card-tags {
        gap: 5px;
    }

    .tag {
        padding: 3px 8px;
        font-size: 11px;
    }

    .post-detail,
    .post-form,
    .admin-panel {
        padding: 18px;
    }

    .import-columns {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .import-columns div {
        min-height: 66px;
        padding: 10px;
    }

    .import-note p {
        display: grid;
        grid-template-columns: auto 1fr;
    }

    .post-media-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .post-action-button {
        width: 100%;
    }

    .post-detail h1 {
        font-size: 26px;
    }

    .post-detail-meta,
    .profile-meta {
        display: grid;
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .profile-header {
        gap: 14px;
        padding: 18px;
    }

    .profile-avatar {
        width: 68px;
        height: 68px;
        border-radius: 16px;
        font-size: 26px;
    }

    .profile-info h1,
    .profile-info h2 {
        font-size: 24px;
    }

    .avatar-form,
    .avatar-remove-form {
        margin-top: 12px;
    }

    .admin-table {
        min-width: 680px;
    }

    .site-footer {
        padding: 22px 0;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
        gap: 10px;
    }

    .footer-links a,
    .footer-link-button {
        padding: 10px;
        border: 1px solid var(--border);
        border-radius: var(--radius);
        background: var(--bg-soft);
        text-align: center;
    }

    .footer-link-button {
        width: 100%;
    }
}

/* ====== 现代发帖表单 ====== */
.modern-post-form {
    padding: 28px;
}

.modern-post-form form {
    display: grid;
    gap: 20px;
}

.modern-field {
    display: grid;
    gap: 8px;
}

.modern-field label {
    color: var(--text);
    font-size: 14px;
    font-weight: 700;
}

.required-mark {
    color: var(--error);
    margin-left: 2px;
}

.modern-field input,
.modern-field select,
.modern-field textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: #f5f5f5;
    color: var(--text);
    padding: 12px 14px;
    font-size: 14px;
    transition: border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.modern-field input::placeholder,
.modern-field textarea::placeholder {
    color: #9ca3af;
}

.modern-field input:focus,
.modern-field select:focus,
.modern-field textarea:focus {
    outline: none;
    background: #fff;
    border-color: #93c5fd;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

.modern-field textarea {
    resize: vertical;
    min-height: 200px;
    line-height: 1.7;
    font-family: inherit;
}

.modern-field-row {
    display: grid;
    gap: 16px;
}

.modern-field-row.two-col {
    grid-template-columns: 1fr 1fr;
}

.modern-field-row.three-col {
    grid-template-columns: repeat(3, 1fr);
}

/* 富文本编辑器 */
.editor-wrapper {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
}

.editor-wrapper:focus-within {
    border-color: #93c5fd;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

.editor-toolbar {
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
    padding: 6px 8px;
}

.toolbar-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2px;
}

.tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}

.tool-btn:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.tool-btn:active {
    background: #dbeafe;
}

.tool-btn .icon {
    width: 18px;
    height: 18px;
}

.tool-divider {
    width: 1px;
    height: 20px;
    background: var(--border);
    margin: 0 4px;
    flex: 0 0 auto;
}

.editor-wrapper textarea {
    border: none;
    border-radius: 0;
    background: #fff;
    padding: 16px 14px;
    min-height: 220px;
    box-shadow: none !important;
}

.editor-wrapper textarea:focus {
    outline: none;
    box-shadow: none;
}

/* 折叠区 */
.modern-details {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-soft);
    overflow: hidden;
}

.modern-details summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-secondary);
    list-style: none;
    transition: background .2s ease;
}

.modern-details summary::-webkit-details-marker {
    display: none;
}

.modern-details summary::after {
    content: '';
    margin-left: auto;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: 5px solid var(--text-muted);
    transition: transform .2s ease;
}

.modern-details[open] summary::after {
    transform: rotate(180deg);
}

.modern-details summary:hover {
    background: var(--primary-soft);
    color: var(--primary);
}

.modern-details .details-body {
    padding: 16px;
    display: grid;
    gap: 16px;
}

.modern-details .modern-field input,
.modern-details .modern-field select {
    background: #fff;
}

.submit-btn {
    min-height: 46px;
    font-size: 15px;
    margin-top: 4px;
}

/* 响应式适配 */
@media (max-width: 860px) {
    .modern-field-row.two-col,
    .modern-field-row.three-col {
        grid-template-columns: 1fr;
    }

    .modern-post-form {
        padding: 20px;
    }
}

@media (max-width: 560px) {
    .modern-post-form {
        padding: 16px;
    }

    .tool-btn {
        width: 32px;
        height: 32px;
    }

    .editor-wrapper textarea {
        min-height: 180px;
        padding: 12px 10px;
    }
}

/* ====== 后台标签栏 ====== */
.admin-tabs {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
}

/* ====== Toast 提示 ====== */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    z-index: 9999;
    padding: 12px 24px;
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
    opacity: 0;
    transition: opacity .3s ease, transform .3s ease;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: #16a34a;
    color: #fff;
}

.toast.error {
    background: var(--error);
    color: #fff;
}

.admin-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    padding: 10px 18px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    transition: all .2s ease;
}

.admin-tab:hover {
    border-color: #bfdbfe;
    background: var(--primary-soft);
    color: var(--primary);
}

.admin-tab.active {
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 18px rgba(37, 99, 235, .2);
}

.admin-tab .icon {
    width: 16px;
    height: 16px;
}

/* ====== 置顶帖子样式 ====== */
.post-card.pinned {
    border-left: 3px solid var(--primary);
    background: linear-gradient(90deg, var(--primary-soft) 0%, var(--surface) 14%);
}

.pinned-badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 800;
    margin-right: 6px;
    vertical-align: middle;
}

.pinned-badge .icon {
    width: 14px;
    height: 14px;
}

/* ====== 后台标签栏移动端 ====== */
@media (max-width: 860px) {
    .admin-tab {
        padding: 9px 14px;
        font-size: 13px;
    }
}

@media (max-width: 560px) {
    .admin-tab {
        padding: 8px 12px;
        font-size: 12px;
    }

    .pinned-badge {
        font-size: 11px;
    }

    .pinned-badge .icon {
        width: 12px;
        height: 12px;
    }
}