:root {
    --bg-page: #f5f7ff;
    --bg-page-alt: #fff7f2;
    --surface: rgba(255, 255, 255, 0.88);
    --surface-strong: #ffffff;
    --surface-soft: rgba(246, 248, 255, 0.86);
    --text-primary: #1f2847;
    --text-secondary: #53607d;
    --text-muted: #72809d;
    --heading-color: #121a32;
    --border-color: rgba(101, 116, 169, 0.18);
    --border-strong: rgba(80, 92, 154, 0.28);
    --primary: #4f46e5;
    --primary-strong: #4338ca;
    --primary-soft: rgba(79, 70, 229, 0.12);
    --accent: #fb7185;
    --orange-soft: rgba(249, 115, 22, 0.12);
    --shadow: 0 18px 45px rgba(59, 73, 139, 0.12);
    --shadow-soft: 0 12px 30px rgba(53, 68, 124, 0.08);
    --shadow-hover: 0 22px 50px rgba(59, 73, 139, 0.16);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius: 18px;
    --radius-sm: 14px;
    --max-width: 1240px;
    --header-height: 76px;
    --transition: all 0.25s ease;
    --bg: var(--surface-soft);
    --border: var(--border-color);
}

[data-theme="dark"] {
    --bg-page: #090d1b;
    --bg-page-alt: #151121;
    --surface: rgba(17, 24, 39, 0.78);
    --surface-strong: rgba(17, 24, 39, 0.92);
    --surface-soft: rgba(30, 41, 59, 0.7);
    --text-primary: #e5ecff;
    --text-secondary: #c0c9e3;
    --text-muted: #8d9abb;
    --heading-color: #f8fbff;
    --border-color: rgba(148, 163, 184, 0.18);
    --border-strong: rgba(148, 163, 184, 0.28);
    --primary: #8b8cff;
    --primary-strong: #a5b4fc;
    --primary-soft: rgba(139, 140, 255, 0.18);
    --shadow: 0 18px 48px rgba(2, 6, 23, 0.45);
    --shadow-soft: 0 10px 24px rgba(2, 6, 23, 0.28);
    --shadow-hover: 0 22px 55px rgba(2, 6, 23, 0.52);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family:
        "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        sans-serif;
    font-size: 15px;
    line-height: 1.75;
    color: var(--text-primary);
    background:
        radial-gradient(
            circle at top left,
            rgba(99, 102, 241, 0.16),
            transparent 36%
        ),
        radial-gradient(
            circle at top right,
            rgba(249, 115, 22, 0.14),
            transparent 30%
        ),
        linear-gradient(180deg, var(--bg-page) 0%, var(--bg-page-alt) 100%);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-strong);
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
textarea {
    font: inherit;
}

.astro-orb {
    position: fixed;
    z-index: 0;
    pointer-events: none;
    filter: blur(10px);
    opacity: 0.55;
}

.astro-orb-left {
    width: 320px;
    height: 320px;
    top: -80px;
    left: -90px;
    background: radial-gradient(
        circle,
        rgba(99, 102, 241, 0.28) 0%,
        transparent 72%
    );
}

.astro-orb-right {
    width: 340px;
    height: 340px;
    top: 120px;
    right: -120px;
    background: radial-gradient(
        circle,
        rgba(249, 115, 22, 0.18) 0%,
        transparent 70%
    );
}

.top-header {
    position: sticky;
    top: 0;
    z-index: 120;
    backdrop-filter: blur(22px);
    -webkit-backdrop-filter: blur(22px);
    background: rgba(250, 252, 255, 0.72);
    border-bottom: 1px solid rgba(255, 255, 255, 0.5);
}

[data-theme="dark"] .top-header {
    background: rgba(9, 13, 27, 0.72);
    border-bottom-color: rgba(148, 163, 184, 0.1);
}

.header-inner {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    min-height: var(--header-height);
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 18px;
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    color: var(--heading-color);
    font-weight: 700;
    font-size: 17px;
}

.site-brand:hover {
    color: var(--heading-color);
}

.site-avatar {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    object-fit: cover;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    background: linear-gradient(135deg, #4f46e5, #fb7185 70%, #fb923c);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.26),
        0 12px 26px rgba(79, 70, 229, 0.22);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.nav-link {
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
}

.nav-link:hover,
.nav-link.active {
    color: var(--heading-color);
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 8px 18px rgba(67, 56, 202, 0.08);
}

[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
    background: rgba(30, 41, 59, 0.72);
}

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

.header-icon,
.header-user-info {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    background: rgba(255, 255, 255, 0.68);
    color: var(--heading-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

[data-theme="dark"] .header-icon,
[data-theme="dark"] .header-user-info {
    background: rgba(17, 24, 39, 0.72);
    border-color: rgba(148, 163, 184, 0.18);
}

.header-icon:hover,
.header-user-info:hover,
.header-user-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.header-user-info {
    width: auto;
    padding: 0 14px;
    gap: 8px;
    font-weight: 600;
    color: var(--heading-color);
}

.header-user-info:hover {
    color: var(--heading-color);
}

.menu-toggle {
    display: none;
}

.theme-switcher,
.header-user-dropdown {
    position: relative;
}

.theme-options,
.user-dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    min-width: 210px;
    padding: 10px;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: var(--transition);
    z-index: 30;
}

[data-theme="dark"] .theme-options,
[data-theme="dark"] .user-dropdown-menu {
    background: rgba(17, 24, 39, 0.92);
    border-color: rgba(148, 163, 184, 0.18);
}

.theme-options.show,
.user-dropdown-menu.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-option,
.dropdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
    color: var(--text-primary);
}

.theme-option:hover,
.theme-option.active,
.dropdown-item:hover {
    background: var(--primary-soft);
    color: var(--heading-color);
}

.theme-option .theme-name,
.dropdown-item span {
    font-weight: 600;
}

.theme-option .theme-desc {
    color: var(--text-muted);
    font-size: 12px;
}

.header-user-btn {
    height: 42px;
    padding: 0 10px 0 8px;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.68);
    color: var(--heading-color);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: var(--transition);
}

[data-theme="dark"] .header-user-btn {
    background: rgba(17, 24, 39, 0.72);
    border-color: rgba(148, 163, 184, 0.18);
}

.user-avatar,
.user-avatar-fallback {
    width: 28px;
    height: 28px;
    border-radius: 10px;
    flex-shrink: 0;
}

.user-avatar {
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.46);
}

.user-avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 13px;
    font-weight: 700;
    background: linear-gradient(135deg, #4f46e5, #fb7185);
}

.user-name {
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
    font-weight: 600;
}

.dropdown-icon {
    width: 15px;
    height: 15px;
    transition: transform 0.2s ease;
}

.header-user-dropdown.open .dropdown-icon {
    transform: rotate(180deg);
}

.dropdown-item {
    justify-content: flex-start;
}

.dropdown-item i {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.dropdown-divider {
    height: 1px;
    margin: 6px 8px;
    background: var(--border-color);
}

.search-modal {
    position: fixed;
    inset: 0;
    z-index: 140;
    padding: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.48);
}

.search-modal-card {
    width: min(560px, 100%);
    padding: 24px;
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 24px 54px rgba(15, 23, 42, 0.22);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

[data-theme="dark"] .search-modal-card {
    background: rgba(17, 24, 39, 0.94);
}

.search-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.search-modal-head h3 {
    margin: 0;
    font-size: 22px;
    color: var(--heading-color);
}

.search-close-btn {
    width: 38px;
    height: 38px;
    border: none;
    border-radius: 12px;
    background: var(--surface-soft);
    color: var(--text-secondary);
    cursor: pointer;
}

.search-modal-input,
.sidebar-search-input,
.comment-form textarea,
textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    padding: 14px 16px;
    outline: none;
    transition: var(--transition);
}

[data-theme="dark"] .search-modal-input,
[data-theme="dark"] .sidebar-search-input,
[data-theme="dark"] .comment-form textarea,
[data-theme="dark"] textarea {
    background: rgba(15, 23, 42, 0.76);
}

.search-modal-input:focus,
.sidebar-search-input:focus,
.comment-form textarea:focus,
textarea:focus {
    border-color: rgba(79, 70, 229, 0.45);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.search-modal-actions {
    margin-top: 16px;
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: 110px;
    padding: 11px 18px;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 14px 28px rgba(79, 70, 229, 0.2);
}

.btn:hover {
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: rgba(90, 104, 140, 0.14);
    color: var(--heading-color);
    box-shadow: none;
}

.btn-secondary:hover {
    color: var(--heading-color);
}

.page-shell {
    position: relative;
    z-index: 1;
    padding: 24px 24px 56px;
}

.hero-banner {
    max-width: var(--max-width);
    margin: 0 auto 28px;
    padding: 48px;
    border-radius: 34px;
    background:
        radial-gradient(
            circle at top right,
            rgba(255, 255, 255, 0.28),
            transparent 32%
        ),
        linear-gradient(
            135deg,
            rgba(37, 99, 235, 0.94),
            rgba(79, 70, 229, 0.92) 55%,
            rgba(251, 113, 133, 0.78)
        );
    background-size: cover;
    background-position: center;
    color: white;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.hero-banner-compact {
    padding-top: 40px;
    padding-bottom: 40px;
}

.hero-content {
    max-width: 760px;
}

.hero-kicker,
.section-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    margin-bottom: 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    color: rgba(255, 255, 255, 0.94);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.section-kicker {
    margin-bottom: 12px;
    background: var(--primary-soft);
    color: var(--primary-strong);
}

.hero-title {
    margin: 0;
    font-size: clamp(32px, 4vw, 54px);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    margin: 16px 0 0;
    max-width: 720px;
    font-size: 17px;
    color: rgba(255, 255, 255, 0.82);
}

.hero-meta {
    margin-top: 22px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.14);
    color: white;
    font-weight: 600;
    font-size: 13px;
}

.main-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 24px;
    align-items: start;
}

.flash-stack {
    grid-column: 1 / -1;
    display: grid;
    gap: 12px;
}

.flash-message {
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid rgba(251, 191, 36, 0.25);
    background: rgba(255, 251, 235, 0.92);
    color: #8a5600;
}

[data-theme="dark"] .flash-message {
    background: rgba(68, 51, 13, 0.52);
    color: #ffd87a;
}

.main-content {
    min-width: 0;
}

.sidebar {
    position: sticky;
    top: calc(var(--header-height) + 18px);
    display: grid;
    gap: 18px;
}

.widget,
.post-card,
.archive-year,
.article-container,
.comments-section,
.tag-cloud-page {
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: var(--radius-xl);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

[data-theme="dark"] .widget,
[data-theme="dark"] .post-card,
[data-theme="dark"] .archive-year,
[data-theme="dark"] .article-container,
[data-theme="dark"] .comments-section,
[data-theme="dark"] .tag-cloud-page {
    border-color: rgba(148, 163, 184, 0.12);
}

.widget {
    padding: 22px;
}

.widget-title {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 15px;
    font-weight: 700;
    color: var(--heading-color);
}

.widget-title i {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.author-widget {
    text-align: center;
}

.author-avatar {
    width: 82px;
    height: 82px;
    margin: 0 auto 14px;
    border-radius: 24px;
    object-fit: cover;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, #4f46e5, #fb7185 68%, #fb923c);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.24),
        0 18px 34px rgba(79, 70, 229, 0.22);
}

.author-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--heading-color);
}

.author-bio {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.site-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 18px;
}

.stat-item {
    padding: 12px 10px;
    border-radius: 16px;
    background: var(--surface-soft);
}

.stat-value {
    display: block;
    font-weight: 700;
    font-size: 18px;
    color: var(--heading-color);
}

.stat-label {
    display: block;
    margin-top: 4px;
    color: var(--text-muted);
    font-size: 12px;
}

.recent-comments-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}

.recent-comment-item {
    padding: 14px 16px;
    border-radius: 18px;
    background: var(--surface-soft);
}

.recent-comment-link {
    display: block;
}

.recent-comment-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
    font-size: 12px;
}

.recent-comment-author {
    color: var(--heading-color);
    font-weight: 700;
}

.recent-comment-time {
    color: var(--text-muted);
}

.recent-comment-excerpt {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 13px;
}

.recent-comment-post {
    margin-top: 8px;
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
}

.tag-cloud,
.post-tags,
.tag-cloud-page {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-strong);
    font-size: 13px;
    font-weight: 600;
}

.tag:hover {
    color: var(--primary-strong);
    background: rgba(79, 70, 229, 0.18);
}

.archive-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.archive-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.archive-link {
    color: var(--text-primary);
}

.archive-count {
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
}

.post-list {
    display: grid;
    gap: 22px;
}

.post-card {
    overflow: hidden;
    transition: var(--transition);
}

.post-card:hover,
.category-panel:hover,
.archive-year:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.post-card-featured {
    margin-bottom: 22px;
}

.post-cover {
    width: 100%;
    aspect-ratio: 16 / 8;
    object-fit: cover;
}

.post-body {
    padding: 24px 26px;
}

.feature-badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, #fb7185, #fb923c);
    color: white;
    font-size: 12px;
    font-weight: 700;
}

.post-meta,
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 14px;
    color: var(--text-muted);
    font-size: 13px;
}

.post-meta-item,
.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.post-meta-item i,
.article-meta i,
.archive-post-date i,
.comments-title i {
    width: 15px;
    height: 15px;
    color: var(--primary);
}

.post-title {
    margin: 14px 0 10px;
    font-size: clamp(26px, 3vw, 34px);
    line-height: 1.18;
    letter-spacing: -0.02em;
}

.posts-index-card .post-title,
.posts-index-list .post-title,
.post-list .post-card:not(.post-card-featured) .post-title {
    font-size: clamp(22px, 2.4vw, 28px);
}

.post-title a {
    color: var(--heading-color);
}

.post-title a:hover {
    color: var(--primary-strong);
}

.post-excerpt {
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.8;
}

.post-footer {
    margin-top: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: var(--heading-color);
}

.read-more i {
    width: 16px;
    height: 16px;
    transition: transform 0.2s ease;
}

.read-more:hover i {
    transform: translateX(3px);
}

.home-category-section {
    margin-top: 28px;
}

.section-heading {
    margin-bottom: 18px;
}

.section-heading h2 {
    margin: 0;
    font-size: 28px;
    color: var(--heading-color);
}

.section-heading p {
    margin: 10px 0 0;
    color: var(--text-secondary);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 18px;
}

.category-panel {
    padding: 22px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.58);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition: var(--transition);
}

.category-panel-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.category-panel-title {
    margin: 0;
    font-size: 22px;
}

.category-panel-title a,
.category-panel-title span {
    color: var(--heading-color);
}

.category-panel-meta {
    margin: 8px 0 0;
    color: var(--text-muted);
    font-size: 13px;
}

.category-panel-count {
    flex-shrink: 0;
    padding: 7px 10px;
    border-radius: 999px;
    background: var(--orange-soft);
    color: #c2410c;
    font-size: 12px;
    font-weight: 700;
}

[data-theme="dark"] .category-panel-count {
    color: #fdba74;
}

.category-panel-highlight {
    margin: 16px 0 0;
    color: var(--text-secondary);
}

.category-panel-list {
    margin-top: 14px;
    display: grid;
    gap: 10px;
}

.category-panel-item {
    padding: 10px 12px;
    border-radius: 14px;
    background: var(--surface-soft);
    color: var(--text-primary);
}

.home-more-link {
    margin-top: 20px;
}

.posts-index-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 18px;
}

.posts-index-summary {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.posts-index-summary strong {
    color: var(--heading-color);
    font-size: 26px;
}

.posts-index-summary em {
    font-style: normal;
    color: var(--text-muted);
}

.posts-index-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.posts-index-actions a {
    padding: 9px 14px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--text-primary);
    font-weight: 600;
}

.pagination {
    margin-top: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.page-link,
.page-number {
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
}

.page-number.current,
.page-link:hover,
.page-number:hover {
    background: var(--primary-soft);
    color: var(--primary-strong);
}

.empty-state {
    padding: 56px 28px;
    text-align: center;
    border-radius: var(--radius-xl);
    border: 1px dashed var(--border-strong);
    background: var(--surface-soft);
}

.empty-state-icon {
    font-size: 34px;
}

.empty-state-text {
    margin: 14px 0 0;
    color: var(--text-secondary);
}

.archive-year {
    padding: 24px 26px;
    margin-bottom: 20px;
}

.archive-year-title {
    margin: 0 0 18px;
    font-size: 28px;
    color: var(--heading-color);
}

.archive-post-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 14px;
}

.archive-post-item {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 14px 0;
    border-top: 1px solid var(--border-color);
}

.archive-post-item:first-child {
    padding-top: 0;
    border-top: none;
}

.archive-post-date {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
}

.archive-post-title a {
    color: var(--heading-color);
    font-size: 18px;
    font-weight: 700;
}

.archive-post-tags {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-overview-panel,
.tag-context-banner {
    padding: 24px 26px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-strong);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.tag-overview-head,
.tag-context-banner,
.archive-timeline-year-head {
    display: grid;
    gap: 18px;
}

.tag-overview-kicker,
.tag-context-kicker,
.archive-timeline-kicker {
    margin: 0 0 8px;
    color: var(--primary-strong);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tag-overview-head h2,
.tag-context-copy h2,
.archive-timeline-year-head h2 {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
    color: var(--heading-color);
}

.tag-overview-head p,
.tag-context-copy p,
.tag-overview-meta,
.archive-timeline-summary {
    margin: 8px 0 0;
    color: var(--text-secondary);
    line-height: 1.75;
}

.tag-overview-stats,
.tag-context-metrics,
.archive-timeline-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-overview-stats span,
.tag-context-metric,
.tag-context-latest,
.archive-year-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: var(--surface-soft);
    color: var(--text-primary);
    font-size: 13px;
}

.tag-overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.tag-overview-card {
    padding: 18px;
    border-radius: 22px;
    border: 1px solid var(--border-color);
    background: var(--surface-soft);
}

.tag-overview-card-top,
.tag-context-metrics {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.tag-overview-name {
    color: var(--heading-color);
    font-size: 18px;
    font-weight: 700;
}

.tag-overview-count {
    font-size: 12px;
    color: var(--text-muted);
}

.tag-overview-latest,
.tag-context-latest {
    margin-top: 10px;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.tag-cloud-page {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 24px 0 0;
}

.tag-cloud-pill {
    padding: 10px 14px;
    font-size: calc(13px * var(--tag-scale, 1));
}

.tag-cloud-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    font-size: 12px;
}

[data-theme="dark"] .tag-cloud-count {
    background: rgba(15, 23, 42, 0.7);
}

.article-container {
    padding: 30px;
}

.tag-context-banner {
    grid-template-columns: minmax(0, 1.05fr) minmax(220px, 0.95fr);
    margin-bottom: 22px;
}

.tag-context-metric {
    flex-direction: column;
    align-items: flex-start;
}

.tag-context-metric strong,
.tag-context-latest strong {
    font-size: 18px;
}

.archive-timeline-nav {
    margin-bottom: 18px;
}

.archive-year-pill {
    text-decoration: none;
}

.archive-timeline {
    display: grid;
    gap: 26px;
}

.archive-timeline-year-block {
    display: grid;
    gap: 18px;
}

.archive-timeline-year-head {
    padding: 24px 26px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-strong);
    background: linear-gradient(
        135deg,
        rgba(110, 118, 255, 0.08),
        rgba(255, 122, 90, 0.08)
    );
}

.archive-timeline-card {
    display: grid;
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 20px;
}

.archive-timeline-marker {
    display: grid;
    gap: 6px;
    align-content: start;
    padding-top: 4px;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.archive-timeline-marker strong {
    font-size: 24px;
    color: var(--heading-color);
}

.archive-timeline-content {
    min-width: 0;
}

@media (max-width: 768px) {
    .tag-context-banner,
    .archive-timeline-card {
        grid-template-columns: 1fr;
    }
}

.article-header {
    margin-bottom: 22px;
}

.article-title {
    margin: 0 0 12px;
    font-size: clamp(30px, 4vw, 46px);
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--heading-color);
}

.article-content {
    color: var(--text-primary);
    min-width: 0;
}

.article-content > *:first-child {
    margin-top: 0;
}

.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4,
.article-content h5,
.article-content h6 {
    margin: 1.6em 0 0.7em;
    line-height: 1.25;
    color: var(--heading-color);
    letter-spacing: -0.02em;
}

.article-content h1 {
    font-size: 34px;
}
.article-content h2 {
    font-size: 28px;
}
.article-content h3 {
    font-size: 23px;
}
.article-content h4 {
    font-size: 20px;
}

.article-content p,
.article-content ul,
.article-content ol,
.article-content blockquote,
.article-content table,
.article-content pre {
    margin: 1.05em 0;
}

.article-content ul,
.article-content ol {
    padding-left: 1.45em;
}

.article-content li + li {
    margin-top: 0.42em;
}

.article-content blockquote {
    padding: 18px 20px;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--surface-soft);
    color: var(--text-secondary);
}

.article-content code {
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-strong);
    font-size: 0.92em;
}

.article-content pre {
    overflow-x: auto;
    padding: 18px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background: rgba(15, 23, 42, 0.96);
    color: #e5ecff;
}

.article-content pre code {
    padding: 0;
    border-radius: 0;
    background: transparent;
    color: inherit;
}

.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 220;
    opacity: 0;
    pointer-events: none;
    background: rgba(79, 70, 229, 0.08);
    transition: opacity 0.2s ease;
}

.reading-progress.is-visible {
    opacity: 1;
}

.reading-progress-bar {
    display: block;
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, #4f46e5, #fb7185 72%, #fb923c);
    box-shadow: 0 0 16px rgba(79, 70, 229, 0.3);
    transition: width 0.12s ease-out;
}

.article-content img {
    margin: 1.5em auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.article-content th,
.article-content td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.article-content th {
    background: var(--surface-soft);
    color: var(--heading-color);
}

.article-content tr:last-child td {
    border-bottom: none;
}

.article-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2em 0;
}

.article-tags {
    margin-top: 26px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.article-tags > i {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.article-nav {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.article-nav-item {
    padding: 18px 20px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.58);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.article-nav-item-disabled {
    opacity: 0.58;
}

.article-nav-label {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 700;
}

.article-nav-title {
    color: var(--heading-color);
    font-weight: 700;
}

.toc-widget .widget-title {
    justify-content: space-between;
    gap: 12px;
}

.toc-widget-title-main {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.toc-expand-btn {
    min-height: 30px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid rgba(101, 116, 169, 0.16);
    background: rgba(255, 255, 255, 0.52);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.02em;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

[data-theme="dark"] .toc-expand-btn {
    background: rgba(30, 41, 59, 0.6);
    border-color: rgba(148, 163, 184, 0.18);
}

.toc-expand-btn:hover {
    color: var(--heading-color);
    border-color: rgba(79, 70, 229, 0.28);
    background: rgba(255, 255, 255, 0.74);
}

[data-theme="dark"] .toc-expand-btn:hover {
    background: rgba(30, 41, 59, 0.84);
}

.toc-widget nav {
    max-height: min(calc(100vh - 180px), 560px);
    overflow: auto;
    padding-right: 8px;
    scrollbar-width: thin;
    scrollbar-color: rgba(101, 116, 169, 0.32) transparent;
}

.toc-widget nav::-webkit-scrollbar {
    width: 4px;
}

.toc-widget nav::-webkit-scrollbar-thumb {
    background: rgba(101, 116, 169, 0.32);
    border-radius: 999px;
}

.toc-widget nav::-webkit-scrollbar-track {
    background: transparent;
}

.toc-widget .toc-list,
.toc-widget .toc-sublist {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.toc-widget .toc-sublist {
    display: none;
    margin-top: 4px;
}

.toc-widget .toc-item {
    position: relative;
    margin: 4px 0;
}

.toc-widget .toc-item[data-level="1"] > .toc-sublist,
.toc-widget .toc-item.is-expanded > .toc-sublist,
.toc-widget .toc-item.is-active-branch > .toc-sublist {
    display: block;
}

.toc-widget .toc-item.has-children {
    padding-left: 14px;
}

.toc-widget .toc-item[data-level="2"] {
    margin-top: 6px;
}

.toc-widget .toc-sublist {
    padding-left: 14px;
}

.toc-widget .toc-item > a {
    display: block;
    padding: 7px 10px;
    border-radius: 12px;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.45;
    transition: var(--transition);
}

.toc-widget .toc-item[data-level="1"] > a {
    font-weight: 700;
    color: var(--heading-color);
    background: linear-gradient(
        135deg,
        rgba(79, 70, 229, 0.08),
        rgba(251, 113, 133, 0.04)
    );
}

.toc-widget .toc-item[data-level="2"] > a {
    font-weight: 600;
    color: var(--heading-color);
}

.toc-widget .toc-item.is-active-item > a {
    color: var(--primary-strong);
    background: linear-gradient(
        135deg,
        rgba(79, 70, 229, 0.14),
        rgba(251, 113, 133, 0.08)
    );
    box-shadow: inset 0 0 0 1px rgba(79, 70, 229, 0.12);
}

.toc-widget .toc-item:not(.is-active-item) > a:hover {
    background: var(--surface-soft);
    color: var(--heading-color);
}

.toc-widget .toc-item.is-active-branch > a {
    color: var(--heading-color);
}

.toc-widget .toc-branch-toggle {
    position: absolute;
    left: -1px;
    top: 8px;
    width: 12px;
    height: 12px;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--text-muted);
}

.toc-widget .toc-branch-toggle span {
    display: block;
    width: 8px;
    height: 8px;
    margin: 1px auto 0;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    transition:
        transform var(--transition),
        color var(--transition);
}

.toc-widget .toc-item.is-expanded > .toc-branch-toggle span,
.toc-widget .toc-item.is-active-branch > .toc-branch-toggle span {
    transform: rotate(45deg);
    color: var(--primary);
}

.comments-section {
    margin-top: 24px;
    padding: 28px;
}

.comments-title {
    margin: 0 0 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--heading-color);
    font-size: 24px;
}

.comment-form textarea {
    min-height: 110px;
    resize: vertical;
}

.comment-form-footer {
    margin-top: 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.comment-note-box {
    padding: 16px;
    border-radius: var(--radius);
    background: var(--surface-soft);
    color: var(--text-secondary);
}

.comment-list {
    margin-top: 18px;
    display: grid;
    gap: 18px;
}

.comment-item {
    display: flex;
    gap: 14px;
}

.comment-avatar,
.comment-avatar-fallback {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    flex-shrink: 0;
}

.comment-avatar {
    object-fit: cover;
}

.comment-avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    background: linear-gradient(135deg, #4f46e5, #fb7185);
}

.comment-content-wrapper {
    min-width: 0;
    flex: 1;
    padding: 16px 18px;
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.comment-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.comment-author {
    font-weight: 700;
    color: var(--heading-color);
}

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

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

.comment-empty-state {
    margin-top: 4px;
}

.code-block-wrapper {
    position: relative;
    content-visibility: auto;
    contain-intrinsic-size: 360px auto;
}

.code-block-wrapper.has-code-toolbar pre,
.article-content pre.has-code-toolbar {
    padding-top: 56px;
}

.code-toolbar {
    position: absolute;
    top: 12px;
    right: 12px;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: calc(100% - 24px);
}

.large-code-toolbar {
    position: static;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    flex-wrap: wrap;
}

.large-code-actions {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.large-code-expand-btn {
    opacity: 1;
}

.large-code-expand-btn[disabled] {
    cursor: not-allowed;
    opacity: 0.68;
}

.code-language-badge {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0 10px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.16);
    background: rgba(15, 23, 42, 0.78);
    color: #dbe7ff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    white-space: nowrap;
}

.code-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 10px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 999px;
    background: rgba(15, 23, 42, 0.9);
    color: #e5ecff;
    cursor: pointer;
    opacity: 0.38;
    transition:
        opacity 0.2s ease,
        transform 0.2s ease,
        background 0.2s ease,
        color 0.2s ease;
    z-index: 2;
}

@media (hover: hover) and (pointer: fine) {
    .code-block-wrapper:hover .code-copy-btn,
    .code-block-wrapper:focus-within .code-copy-btn {
        opacity: 1;
        transform: translateY(-1px);
    }
}

@media (hover: none), (pointer: coarse) {
    .code-copy-btn {
        opacity: 1;
    }
}

.code-copy-btn.copied {
    background: rgba(34, 197, 94, 0.88);
    color: white;
}

/* Large code block styles - most styles are handled by JavaScript */
.large-code-block code {
    display: block;
    white-space: pre;
    overflow: visible;
}


@media (max-width: 768px) {
    .code-block-wrapper.has-code-toolbar pre,
    .article-content pre.has-code-toolbar {
        padding-top: 52px;
    }

    .code-toolbar {
        top: 8px;
        right: 8px;
        gap: 6px;
    }

    .large-code-toolbar {
        margin-bottom: 10px;
        gap: 6px;
    }

    .large-code-actions {
        margin-left: 0;
        width: 100%;
    }

    .code-language-badge {
        min-height: 24px;
        padding: 0 8px;
        font-size: 10px;
    }
}

.site-footer {
    position: relative;
    z-index: 1;
    max-width: var(--max-width);
    margin: 0 auto 28px;
    padding: 0 24px;
}

.footer-content {
    padding: 24px 28px;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.58);
    background: var(--surface);
    box-shadow: var(--shadow-soft);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    flex-wrap: wrap;
}

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

.footer-link {
    color: var(--text-secondary);
    font-weight: 600;
}

.footer-meta {
    margin: 8px 0 0;
    color: var(--text-muted);
    font-size: 14px;
}

.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 18px 30px rgba(79, 70, 229, 0.24);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 80;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

@media (max-width: 1080px) {
    .main-container {
        grid-template-columns: minmax(0, 1fr);
    }

    .sidebar {
        position: static;
        order: 2;
    }
}

@media (max-width: 860px) {
    .header-inner {
        flex-wrap: wrap;
    }

    .header-nav {
        display: none;
        width: 100%;
        order: 4;
        margin: 2px 0 0;
        padding-top: 6px;
        flex-wrap: wrap;
        gap: 8px;
    }

    .header-nav.open {
        display: flex;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .hero-banner {
        padding: 34px 24px;
        border-radius: 28px;
    }

    .hero-title {
        font-size: clamp(28px, 8vw, 42px);
    }

    .article-nav,
    .site-stats {
        grid-template-columns: 1fr;
    }

    .archive-post-item {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-shell,
    .site-footer {
        padding-left: 16px;
        padding-right: 16px;
    }

    .header-inner {
        padding-left: 16px;
        padding-right: 16px;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
        flex-wrap: wrap;
    }

    .theme-switcher .theme-options {
        left: 0;
        right: auto;
        min-width: min(220px, calc(100vw - 32px));
        max-width: calc(100vw - 32px);
    }

    .user-name {
        display: none;
    }

    .header-user-btn {
        padding-right: 8px;
    }

    .post-body,
    .archive-year,
    .article-container,
    .comments-section,
    .widget,
    .tag-cloud-page,
    .footer-content {
        padding: 18px;
    }

    .posts-index-toolbar,
    .post-footer,
    .comment-form-footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .back-to-top {
        right: 16px;
        bottom: 16px;
    }
}