/* ===== 基础变量（蓝 · 黑 · 白 几何格调） ===== */
:root {
    --bg-primary: #04060f;
    --bg-secondary: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(8, 12, 26, 0.72);
    --bg-glass-hover: rgba(14, 20, 42, 0.85);
    --text-primary: #f0f4ff;
    --text-secondary: #b9c4e2;
    --text-muted: #7e87a6;
    --accent: #3d8bff;
    --accent-2: #1f5eff;
    --accent-3: #ffffff;
    --accent-glow: rgba(61, 139, 255, 0.35);
    --border: rgba(140, 180, 255, 0.12);
    --border-hover: rgba(61, 139, 255, 0.45);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    --radius: 14px;
    --radius-sm: 8px;
    --cut: 18px;
    --cut-sm: 12px;
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 重置与基础 ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ============================================================
   科幻动态背景
   层级: 星云光斑(0) → 星野画布(1) → 透视网格(1) → 扫描线(3) → 暗角(3)
   ============================================================ */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

/* 几何斜线网格 */
.bg-animation::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(115deg, rgba(61, 139, 255, 0.05) 1px, transparent 1px),
        linear-gradient(-115deg, rgba(61, 139, 255, 0.035) 1px, transparent 1px);
    background-size: 96px 96px;
}

/* 星云光斑 */
.bg-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.5;
    animation: blob-float 22s ease-in-out infinite;
}

.blob-1 {
    width: 640px;
    height: 640px;
    background: radial-gradient(circle, rgba(61, 139, 255, 0.55), rgba(31, 94, 255, 0.25) 60%, transparent 75%);
    top: -220px;
    left: -140px;
    animation-delay: 0s;
}

.blob-2 {
    width: 560px;
    height: 560px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.22), rgba(31, 94, 255, 0.2) 60%, transparent 75%);
    bottom: -180px;
    right: -120px;
    animation-delay: -8s;
}

.blob-3 {
    width: 460px;
    height: 460px;
    background: radial-gradient(circle, rgba(0, 132, 255, 0.45), rgba(61, 139, 255, 0.15) 60%, transparent 75%);
    top: 45%;
    left: 55%;
    animation-delay: -15s;
}

@keyframes blob-float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(60px, -40px) scale(1.12); }
    50% { transform: translate(-40px, 60px) scale(0.92); }
    75% { transform: translate(40px, 40px) scale(1.06); }
}

/* 星野画布（JS 绘制星星、流星、粒子连线） */
#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* 赛博透视网格地面 */
.grid-floor {
    position: fixed;
    left: -50%;
    bottom: -12%;
    width: 200%;
    height: 55%;
    z-index: 1;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(61, 139, 255, 0.14) 1px, transparent 1px),
        linear-gradient(90deg, rgba(61, 139, 255, 0.14) 1px, transparent 1px);
    background-size: 44px 44px;
    transform: perspective(320px) rotateX(62deg);
    animation: grid-scroll 2.6s linear infinite;
    -webkit-mask-image: linear-gradient(to top, rgba(0,0,0,0.9) 20%, transparent 85%);
    mask-image: linear-gradient(to top, rgba(0,0,0,0.9) 20%, transparent 85%);
}

@keyframes grid-scroll {
    from { background-position: 0 0; }
    to { background-position: 0 44px; }
}

/* 全息扫描线 */
.scanlines {
    position: fixed;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 3px,
        rgba(61, 139, 255, 0.015) 3px,
        rgba(61, 139, 255, 0.015) 4px
    );
}

/* 屏幕暗角 */
.vignette {
    position: fixed;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    background: radial-gradient(ellipse at center, transparent 62%, rgba(3, 4, 10, 0.32) 100%);
}

/* ===== 顶部导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(5, 6, 14, 0.6);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
}

.site-header::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), var(--accent-3), transparent);
    opacity: 0.5;
}

.header-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    flex-shrink: 0;
}

.logo-mark {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 0;
    clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #050b1a;
    font-size: 0.95rem;
    box-shadow: 0 0 16px var(--accent-glow);
    animation: logo-pulse 3s ease-in-out infinite;
}

@keyframes logo-pulse {
    0%, 100% { box-shadow: 0 0 12px var(--accent-glow); }
    50% { box-shadow: 0 0 26px var(--accent-glow); }
}

.logo-text {
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.logo-text em {
    font-style: normal;
    font-size: 0.65rem;
    font-weight: 400;
    color: var(--accent);
    letter-spacing: 2px;
    font-family: 'JetBrains Mono', monospace;
}

.top-nav {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.top-nav-link {
    padding: 7px 13px;
    font-size: 0.83rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.top-nav-link:hover {
    color: var(--accent);
    background: rgba(61, 139, 255, 0.06);
    border-color: rgba(61, 139, 255, 0.2);
    text-shadow: 0 0 12px var(--accent-glow);
}

/* ===== 主容器 ===== */
.container {
    position: relative;
    z-index: 2;
    max-width: 1240px;
    margin: 0 auto;
    padding: 40px 24px 40px;
}

/* ===== 三栏布局：左简介 / 中文章 / 右导航 ===== */
.layout {
    display: grid;
    grid-template-columns: 270px minmax(0, 1fr) 280px;
    gap: 24px;
    align-items: start;
}

/* 侧栏滚动时吸附顶部 */
.sidebar-left,
.sidebar-right {
    position: sticky;
    top: 86px;
}

/* 中栏：文章 + 留言板纵向排列 */
.content-column {
    display: flex;
    flex-direction: column;
    gap: 48px;
    min-width: 0;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 左栏：博主卡片 ===== */
.profile-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
    padding: 36px 22px;
    text-align: center;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
    animation: fade-in-up 0.8s ease-out;
    position: relative;
    overflow: hidden;
}

.profile-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
    opacity: 0.8;
}

/* 卡片角落扫描光 */
.profile-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -60%;
    width: 40%;
    height: 100%;
    background: linear-gradient(105deg, transparent, rgba(61, 139, 255, 0.06), transparent);
    animation: card-scan 5s ease-in-out infinite;
}

@keyframes card-scan {
    0%, 20% { left: -60%; }
    60%, 100% { left: 120%; }
}

/* 头像 */
.avatar-wrapper {
    position: relative;
    width: 110px;
    height: 110px;
    margin: 0 auto 20px;
}

.avatar {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(61, 139, 255, 0.15);
    position: relative;
    z-index: 2;
    transition: var(--transition);
}

.avatar-ring {
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, #3d8bff, #1f5eff, #ffffff, #0084ff, #3d8bff);
    animation: ring-rotate 6s linear infinite;
    opacity: 0.85;
    filter: drop-shadow(0 0 10px rgba(61, 139, 255, 0.35));
}

.avatar-ring::before {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: 50%;
    background: var(--bg-primary);
}

@keyframes ring-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.avatar-wrapper:hover .avatar {
    transform: scale(1.05);
}

/* 姓名 */
.name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.name-text {
    background: linear-gradient(135deg, #f0f4ff 0%, #9cc4ff 55%, #e6efff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.verified {
    color: var(--accent);
    font-size: 1rem;
    animation: verified-pulse 2s ease-in-out infinite;
    text-shadow: 0 0 12px var(--accent-glow);
}

@keyframes verified-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

/* 标语 */
.tagline {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 400;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
    line-height: 1.6;
}

/* 位置 */
.location {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 18px;
}

.location svg {
    opacity: 0.7;
}

/* 简介 */
.bio {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.8;
    margin: 0 auto 24px;
}

/* 统计 */
.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-number {
    font-size: 1.35rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    background: linear-gradient(135deg, #fff, #9cc4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 0.68rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 32px;
    background: var(--border);
}

/* ===== 区块标题（几何菱形标记） ===== */
.section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-shadow: 0 0 14px rgba(61, 139, 255, 0.25);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.section-title::before,
.section-title::after {
    content: '◆';
    font-size: 0.5rem;
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent-glow);
}

.title-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(61, 139, 255, 0.25), transparent);
    max-width: 80px;
}

/* ============================================================
   中栏：博客文章列表
   ============================================================ */
.posts-section {
    animation: fade-in-up 0.8s ease-out 0.15s both;
}

.post-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.post-card {
    display: flex;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.post-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-3px);
    filter: drop-shadow(0 14px 30px rgba(0, 0, 0, 0.5)) drop-shadow(0 0 16px rgba(61, 139, 255, 0.12));
}

/* 文章封面 */
.post-cover {
    width: 132px;
    flex-shrink: 0;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 12px;
    overflow: hidden;
}

.post-cover::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 18px 18px;
    -webkit-mask-image: radial-gradient(circle at 70% 30%, rgba(0,0,0,0.9), transparent 75%);
    mask-image: radial-gradient(circle at 70% 30%, rgba(0,0,0,0.9), transparent 75%);
}

.post-cover::after {
    content: '';
    position: absolute;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    filter: blur(40px);
    top: -30px;
    right: -30px;
    background: rgba(255, 255, 255, 0.25);
    transition: var(--transition);
}

.post-card:hover .post-cover::after {
    transform: scale(1.4);
}

.cover-1 { background: linear-gradient(135deg, #060b1c, #1f5eff 55%, #9cc4ff); }
.cover-2 { background: linear-gradient(135deg, #0a1230, #3d8bff 55%, #e6efff); }
.cover-3 { background: linear-gradient(135deg, #04060f, #2a4bcc 55%, #3d8bff); }
.cover-4 { background: linear-gradient(135deg, #0b1638, #4f7dff 55%, #0a1230); }
.cover-5 { background: linear-gradient(135deg, #0e1e4a, #2f6bff 55%, #9cc4ff); }

.post-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 2;
    padding: 2px 8px;
    border-radius: 2px;
    font-size: 0.66rem;
    font-weight: 600;
    color: #050b1a;
    background: linear-gradient(135deg, #3d8bff, #9cc4ff);
    box-shadow: 0 0 14px rgba(61, 139, 255, 0.5);
    letter-spacing: 1px;
}

.post-category {
    position: relative;
    z-index: 2;
    padding: 2px 9px;
    border-radius: 2px;
    font-size: 0.68rem;
    color: rgba(255, 255, 255, 0.92);
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(6px);
}

/* 文章正文 */
.post-body {
    flex: 1;
    min-width: 0;
    padding: 12px 18px;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 4px;
}

.meta-dot {
    opacity: 0.5;
}

.post-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.35;
}

.post-title a {
    color: var(--text-primary);
    text-decoration: none;
    background: linear-gradient(135deg, var(--accent), var(--accent-3)) no-repeat left bottom;
    background-size: 0% 2px;
    transition: background-size 0.4s ease, color 0.3s ease;
}

.post-card:hover .post-title a,
.post-title a:hover {
    background-size: 100% 2px;
    color: #dffbff;
}

.post-excerpt {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

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

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.post-tag {
    padding: 2px 9px;
    border-radius: 2px;
    font-size: 0.68rem;
    color: var(--accent);
    background: rgba(61, 139, 255, 0.07);
    border: 1px solid rgba(61, 139, 255, 0.22);
}

.post-more {
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.post-more:hover {
    color: var(--accent);
    text-shadow: 0 0 10px var(--accent-glow);
}

/* ============================================================
   右栏：快速导航（纵向排列）
   ============================================================ */
.nav-section {
    animation: fade-in-up 0.8s ease-out 0.25s both;
}

.nav-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.nav-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
    padding: 14px 16px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.nav-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--card-color, var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.nav-card:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-hover);
    transform: translateY(-3px);
    filter: drop-shadow(0 12px 28px rgba(0, 0, 0, 0.4)) drop-shadow(0 0 14px var(--card-glow, transparent));
}

.nav-card:hover::before {
    opacity: 1;
}

.nav-icon {
    width: 40px;
    height: 40px;
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.nav-icon svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.nav-card:hover .nav-icon {
    background: var(--card-color, var(--accent));
    box-shadow: 0 4px 15px var(--card-glow, transparent);
}

.nav-card:hover .nav-icon svg {
    color: #fff;
}

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

.nav-info h3 {
    font-size: 0.92rem;
    font-weight: 600;
    margin-bottom: 2px;
    color: var(--text-primary);
}

.nav-info p {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-arrow {
    font-size: 1.1rem;
    color: var(--text-muted);
    opacity: 0;
    transform: translateX(-10px);
    transition: var(--transition);
}

.nav-card:hover .nav-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--card-color, var(--accent));
}

/* ============================================================
   中栏底部：留言板（免登录评论）
   ============================================================ */
.comments-section {
    animation: fade-in-up 0.8s ease-out 0.35s both;
}

.comment-box {
    position: relative;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
    padding: 26px;
    margin-bottom: 18px;
    overflow: hidden;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.5));
}

.comment-box-glow {
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61, 139, 255, 0.15), transparent 70%);
    pointer-events: none;
}

.comment-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), var(--accent-3), transparent);
    opacity: 0.7;
}

.comment-field {
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}

#comment-name,
#comment-text {
    width: 100%;
    background: rgba(5, 8, 18, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
    resize: vertical;
}

#comment-name {
    max-width: 280px;
}

#comment-name::placeholder,
#comment-text::placeholder {
    color: var(--text-muted);
}

#comment-name:focus,
#comment-text:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(61, 139, 255, 0.1), 0 0 18px rgba(61, 139, 255, 0.08);
}

#comment-name.shake,
#comment-text.shake {
    animation: field-shake 0.4s ease;
    border-color: var(--accent-3);
}

@keyframes field-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

.comment-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.comment-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.comment-submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 24px;
    border: none;
    border-radius: 0;
    clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
    font-size: 0.88rem;
    font-weight: 600;
    font-family: inherit;
    color: #050b1a;
    background: linear-gradient(135deg, #3d8bff, #6ea8ff);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 0 18px rgba(61, 139, 255, 0.25);
}

.comment-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 26px rgba(61, 139, 255, 0.4);
}

.comment-submit:active {
    transform: translateY(0);
}

/* 评论计数 */
.comment-count-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0 4px 14px;
}

.comment-count-bar strong {
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
}

.comment-count-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
    animation: verified-pulse 2s ease-in-out infinite;
}

/* 评论列表 */
.comment-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.comment-item {
    display: flex;
    gap: 14px;
    background: var(--bg-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut-sm)), calc(100% - var(--cut-sm)) 100%, 0 100%);
    padding: 16px 18px;
    animation: comment-in 0.5s ease-out;
    transition: var(--transition);
}

@keyframes comment-in {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.comment-item:hover {
    border-color: var(--border-hover);
}

.comment-item.is-new {
    border-color: rgba(61, 139, 255, 0.45);
    box-shadow: 0 0 22px rgba(61, 139, 255, 0.12);
}

.comment-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    flex-shrink: 0;
    border: 2px solid rgba(61, 139, 255, 0.25);
    background: #0d1020;
}

.comment-main {
    flex: 1;
    min-width: 0;
}

.comment-head {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.comment-author {
    font-size: 0.9rem;
    font-weight: 600;
    color: #d3e4ff;
}

.comment-author-badge {
    font-size: 0.65rem;
    padding: 1px 8px;
    border-radius: 2px;
    color: #050b1a;
    background: linear-gradient(135deg, #3d8bff, #9cc4ff);
    font-weight: 600;
    letter-spacing: 1px;
}

.comment-time {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.comment-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
    word-break: break-word;
    white-space: pre-wrap;
}

.comment-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--text-muted);
    font-size: 0.88rem;
    border: 1px dashed var(--border);
    border-radius: var(--radius-sm);
}

/* ===== 页脚 ===== */
.footer {
    margin-top: 48px;
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    animation: fade-in-up 0.8s ease-out 0.5s both;
}

.footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.footer-link {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.footer-link:hover {
    color: var(--text-secondary);
}

.footer-link:hover::after {
    width: 100%;
}

/* ===== 响应式 ===== */
/* 中屏：右栏挪到底部横排 */
@media (max-width: 1080px) {
    .layout {
        grid-template-columns: 250px minmax(0, 1fr);
    }

    .sidebar-right {
        grid-column: 1 / -1;
        position: static;
    }

    .nav-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    }
}

/* 小屏：单栏堆叠 */
@media (max-width: 720px) {
    .container {
        padding: 32px 16px;
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
        padding: 12px 16px;
    }

    .layout {
        grid-template-columns: 1fr;
    }

    .sidebar-left,
    .sidebar-right {
        position: static;
    }

    .content-column {
        gap: 40px;
    }

    .profile-card {
        padding: 32px 20px;
    }

    .post-card {
        flex-direction: column;
    }

    .post-cover {
        width: 100%;
        height: 92px;
    }

    #comment-name {
        max-width: 100%;
    }

    .blob-1, .blob-2, .blob-3 {
        transform: scale(0.6);
    }
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: rgba(61, 139, 255, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(61, 139, 255, 0.3);
}

/* ===== 选择文字颜色 ===== */
::selection {
    background: rgba(61, 139, 255, 0.25);
    color: #fff;
}

/* ===== 左栏：实时日期卡片 ===== */
.datetime-card {
    margin-top: 20px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 0;
    clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
    padding: 20px 22px;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: fade-in-up 0.8s ease-out 0.1s both;
    transition: var(--transition);
}

.datetime-card:hover {
    border-color: var(--border-hover);
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.4)) drop-shadow(0 0 14px rgba(61, 139, 255, 0.12));
}

.datetime-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-3), var(--accent), transparent);
    opacity: 0.7;
}

.datetime-glow {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    width: 160px;
    height: 100px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(31, 94, 255, 0.18), transparent 70%);
    pointer-events: none;
}

.datetime-date {
    position: relative;
    font-size: 0.82rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.datetime-time {
    position: relative;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.6rem;
    font-weight: 500;
    background: linear-gradient(135deg, #fff, #9cc4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
    text-shadow: none;
}

.datetime-week {
    position: relative;
    margin-top: 6px;
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 2px;
}

/* ===== 左栏：月历小组件 ===== */
.datetime-divider {
    height: 1px;
    margin: 14px 0 12px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.datetime-calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    position: relative;
}

.cal-head {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-align: center;
    padding: 2px 0;
    letter-spacing: 1px;
}

.cal-day {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    text-align: center;
    padding: 4px 0;
    border-radius: 8px;
    color: var(--text-secondary);
    transition: background 0.25s ease;
    cursor: default;
}

.cal-day:not(.cal-dim):not(.cal-today):hover {
    background: rgba(61, 139, 255, 0.08);
    color: var(--text-primary);
}

.cal-dim {
    opacity: 0.28;
}

.cal-today {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #050b1a;
    font-weight: 700;
    box-shadow: 0 0 12px var(--accent-glow);
}

/* ===== 月历翻页栏 ===== */
.cal-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
    position: relative;
}

.cal-nav-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 1px;
    font-variant-numeric: tabular-nums;
}

.cal-nav-btn {
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(5, 8, 18, 0.5);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition);
    padding-bottom: 2px;
}

.cal-nav-btn:hover {
    color: var(--accent);
    border-color: var(--border-hover);
    box-shadow: 0 0 12px rgba(61, 139, 255, 0.15);
}

.cal-nav-btn:active {
    transform: scale(0.92);
}