/* ══════════════════════════════════════════════
   个人网站样式系统
   设计语言：简约 · 克制 · 有温度
   ══════════════════════════════════════════════ */

/* ── CSS Variables ── */
:root {
    --color-bg: #fafafa;
    --color-bg-secondary: #f3f4f6;
    --color-bg-card: #ffffff;
    --color-text: #1f2937;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: rgba(37, 99, 235, 0.08);
    --color-primary-glow: rgba(37, 99, 235, 0.15);
    --color-accent: #f59e0b;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;
    --color-shadow: rgba(0, 0, 0, 0.06);
    --color-shadow-hover: rgba(0, 0, 0, 0.12);
    --color-hero-bg: linear-gradient(180deg, #f0f5ff 0%, #fafafa 100%);

    --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --max-width: 1200px;
    --nav-height: 64px;

    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --color-bg: #0f172a;
    --color-bg-secondary: #1e293b;
    --color-bg-card: #1e293b;
    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-tertiary: #64748b;
    --color-primary: #60a5fa;
    --color-primary-hover: #3b82f6;
    --color-primary-light: rgba(96, 165, 250, 0.1);
    --color-primary-glow: rgba(96, 165, 250, 0.2);
    --color-border: #334155;
    --color-border-light: #1e293b;
    --color-shadow: rgba(0, 0, 0, 0.2);
    --color-shadow-hover: rgba(0, 0, 0, 0.4);
    --color-hero-bg: linear-gradient(180deg, #1a2744 0%, #0f172a 100%);
}

/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    transition: background var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

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

/* ── Accessibility: Keyboard focus styles ── */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

/* ── Container ── */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
}

/* ════════════════════════════════════
   主题切换按钮
   ════════════════════════════════════ */
.theme-toggle {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 1001;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.1);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon,
:root:not([data-theme="dark"]) .sun-icon { display: none; }
[data-theme="light"] .moon-icon,
:root:not([data-theme="dark"]) .moon-icon { display: block; }

/* ════════════════════════════════════
   导航栏
   ════════════════════════════════════ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(250, 250, 250, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 var(--color-border-light);
}

[data-theme="dark"] .navbar.scrolled {
    background: rgba(15, 23, 42, 0.85);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text) !important;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--color-text-secondary) !important;
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.25rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: 1px;
    transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text) !important;
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}
.mobile-menu-btn.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ════════════════════════════════════
   Hero 区域
   ════════════════════════════════════ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem 1.5rem;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--color-hero-bg);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle at 50% 40%,
        var(--color-primary-glow) 0%,
        transparent 50%
    );
    animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(2%, -1%) scale(1.05); }
    100% { transform: translate(-1%, 1%) scale(1); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
}

.hero-avatar {
    margin-bottom: 2rem;
}

.avatar-placeholder {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: var(--color-primary);
    border: 3px solid var(--color-border-light);
    transition: all var(--transition-slow);
}

.avatar-placeholder:hover {
    transform: scale(1.05);
    box-shadow: 0 0 0 8px var(--color-primary-glow);
}

.hero-greeting {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

.hero-name {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-titles {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: 0.35rem 1rem;
    background: var(--color-primary-light);
    border-radius: 100px;
    border: 1px solid var(--color-border-light);
}

.hero-divider {
    color: var(--color-text-tertiary);
    font-weight: 300;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    animation: scrollBounce 2s ease-in-out infinite;
    color: var(--color-text-tertiary);
    opacity: 0.6;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ════════════════════════════════════
   Buttons
   ════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 100px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    border: none;
    font-family: var(--font-sans);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: #ffffff !important;
    box-shadow: 0 4px 15px var(--color-primary-glow);
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--color-primary-glow);
}

.btn-outline {
    background: transparent;
    color: var(--color-text) !important;
    border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary) !important;
    transform: translateY(-2px);
}

/* ════════════════════════════════════
   关于我
   ════════════════════════════════════ */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
    line-height: 1.85;
}

.about-intro {
    font-size: 1.15rem !important;
    color: var(--color-text) !important;
}

.about-intro strong {
    color: var(--color-primary);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.skill-tag {
    padding: 0.4rem 0.9rem;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 100px;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.skill-tag:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.about-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.about-card:hover {
    border-color: var(--color-border);
    transform: translateX(4px);
    box-shadow: 0 4px 20px var(--color-shadow);
}

.about-card-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    flex-shrink: 0;
}

.about-card-content {
    display: flex;
    flex-direction: column;
}

.about-card-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.about-card-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* ════════════════════════════════════
   教育经历 - 时间轴
   ════════════════════════════════════ */
.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    padding-bottom: 2.5rem;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -1.55rem;
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-bg);
    box-shadow: 0 0 0 3px var(--color-primary-light);
    z-index: 1;
}

.timeline-content {
    background: var(--color-bg-card);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.timeline-content:hover {
    border-color: var(--color-border);
    box-shadow: 0 4px 20px var(--color-shadow);
    transform: translateX(4px);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 0.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.timeline-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
}

.timeline-date {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 500;
    background: var(--color-primary-light);
    padding: 0.2rem 0.65rem;
    border-radius: 100px;
}

.timeline-degree {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.timeline-desc {
    font-size: 0.92rem;
    color: var(--color-text-tertiary);
    line-height: 1.7;
}

/* ════════════════════════════════════
   项目经历
   ════════════════════════════════════ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 40px var(--color-shadow-hover);
    border-color: var(--color-border);
}

.project-image {
    background: var(--color-bg-secondary);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-image-placeholder {
    color: var(--color-text-tertiary);
    opacity: 0.5;
    transition: all var(--transition-base);
}

.project-card:hover .project-image-placeholder {
    opacity: 0.7;
    transform: scale(1.05);
}

.project-info {
    padding: 1.5rem;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.project-tag {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
}

.project-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.project-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.82rem;
    color: var(--color-text-tertiary);
}

/* ════════════════════════════════════
   博客区域
   ════════════════════════════════════ */
.blog {
    background: var(--color-bg-secondary);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.blog-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    padding: 1.75rem;
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px var(--color-shadow);
    border-color: var(--color-border);
}

.blog-card-date {
    font-size: 0.82rem;
    color: var(--color-text-tertiary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blog-pin-badge {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-light);
    padding: 2px 10px;
    border-radius: 100px;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.blog-card-title {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.5;
    color: var(--color-text);
}

.blog-card:hover .blog-card-title {
    color: var(--color-primary);
}

.blog-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-tags {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.blog-tag {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--color-text-tertiary);
    background: var(--color-bg-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
}

.blog-loading {
    text-align: center;
    color: var(--color-text-tertiary);
    padding: 2rem;
    grid-column: 1 / -1;
}

.blog-more {
    text-align: center;
}

/* ════════════════════════════════════
   联系方式
   ════════════════════════════════════ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.75rem 1rem;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
    text-align: center;
    color: var(--color-text) !important;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--color-shadow);
    border-color: var(--color-primary);
}

.contact-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.contact-label {
    font-size: 0.82rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.contact-value {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* ════════════════════════════════════
   页脚
   ════════════════════════════════════ */
.footer {
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--color-border-light);
}

.footer p {
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
}

.footer-admin-link {
    color: var(--color-text-tertiary);
    font-size: 0.85rem;
    text-decoration: none;
    margin-left: 0.5rem;
    opacity: 0.3;
    transition: opacity var(--transition-fast);
}

.footer-admin-link:hover {
    opacity: 0.8;
    color: var(--color-text-secondary);
}

/* ════════════════════════════════════
   动画
   ════════════════════════════════════ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ════════════════════════════════════
   博客文章页样式
   ════════════════════════════════════ */
.article-container {
    max-width: 720px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.article-header {
    padding: 6rem 0 3rem;
    text-align: center;
}

.article-title {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: var(--color-text-tertiary);
    font-size: 0.9rem;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.article-content {
    padding: 2rem 0 4rem;
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--color-text);
}

.article-content h2 {
    font-size: 1.6rem;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-border-light);
}

.article-content h3 {
    font-size: 1.3rem;
    margin: 2rem 0 0.75rem;
}

.article-content p {
    margin-bottom: 1.25rem;
    color: var(--color-text-secondary);
}

.article-content ul, .article-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
    color: var(--color-text-secondary);
}

.article-content strong {
    color: var(--color-text);
    font-weight: 600;
}

.article-content blockquote {
    border-left: 3px solid var(--color-primary);
    padding: 0.75rem 1.25rem;
    margin: 1.5rem 0;
    background: var(--color-primary-light);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.article-content code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--color-bg-secondary);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    color: var(--color-primary);
}

.article-content pre {
    background: var(--color-bg-secondary);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: 1.25rem 0;
    border: 1px solid var(--color-border-light);
}

.article-content pre code {
    background: none;
    padding: 0;
    color: var(--color-text);
}

.article-content img {
    border-radius: var(--radius-md);
    margin: 1.5rem auto;
}

/* Quill 编辑器输出兼容样式 */
.article-content .ql-align-center { text-align: center; }
.article-content .ql-align-right { text-align: right; }
.article-content .ql-align-justify { text-align: justify; }
.article-content .ql-indent-1 { padding-left: 2em; }
.article-content .ql-indent-2 { padding-left: 4em; }
.article-content .ql-indent-3 { padding-left: 6em; }
.article-content .ql-syntax {
    background: var(--color-bg-secondary);
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.15em 0.4em;
    border-radius: 4px;
}
.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.article-content a:hover {
    color: var(--color-primary-hover);
}

.article-nav {
    padding: 3rem 0;
    border-top: 1px solid var(--color-border-light);
    text-align: center;
}

/* ════════════════════════════════════
   博客列表页
   ════════════════════════════════════ */
.blog-list-header {
    padding: 6rem 0 2rem;
    text-align: center;
}

.blog-list-title {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.blog-list-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
}

.blog-list {
    padding: 1rem 0 4rem;
}

.blog-list-item {
    display: block;
    padding: 1.75rem;
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    margin-bottom: 1rem;
    transition: all var(--transition-base);
    color: var(--color-text) !important;
}

.blog-list-item:hover {
    transform: translateX(4px);
    border-color: var(--color-primary);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.blog-list-item .blog-list-date {
    font-size: 0.82rem;
    color: var(--color-text-tertiary);
    margin-bottom: 0.25rem;
}

.blog-list-item .blog-list-article-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.blog-list-item:hover .blog-list-article-title {
    color: var(--color-primary);
}

.blog-list-item .blog-list-excerpt {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ════════════════════════════════════
   响应式设计
   ════════════════════════════════════ */
@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .hero-name {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-bg-card);
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right var(--transition-base);
        box-shadow: -4px 0 20px var(--color-shadow);
    }

    .nav-links.active {
        right: 0;
    }

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

    .hero-name {
        font-size: 2rem;
    }

    .hero-titles {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-divider {
        display: none;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .projects-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

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

    .section {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-name {
        font-size: 1.75rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* ════════════════════════════════════
   打印样式
   ════════════════════════════════════ */
@media print {
    .navbar,
    .theme-toggle,
    .scroll-indicator,
    .hero-cta,
    .mobile-menu-btn,
    .blog-more,
    .footer-admin-link {
        display: none !important;
    }

    .hero {
        min-height: auto;
        padding: 2rem 1.5rem;
    }

    .section {
        padding: 2rem 0;
        page-break-inside: avoid;
    }

    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
}