/* ============================================================
   YoLiCo Blog - Typecho 博客主题
   与主站 yolico.net 深度融合的设计系统
   ============================================================ */

/* === 1. 基础重置 === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
}

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

button {
    background: none;
    border: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

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

ul, ol {
    list-style: none;
}

/* === 2. 设计系统（与主站完全一致的 CSS 变量） === */
:root {
    --bg-primary: #faf9f6;
    --bg-secondary: #f1efe9;
    --bg-tertiary: #e8e5dc;
    --bg-elevated: #ffffff;

    --text-primary: #0e0e0e;
    --text-secondary: #4a4a4a;
    --text-tertiary: #8a8a85;
    --text-muted: #b5b5ad;

    --border-color: rgba(14, 14, 14, 0.08);
    --border-strong: rgba(14, 14, 14, 0.16);

    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(14, 14, 14, 0.06);
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.04);

    --header-bg: rgba(250, 249, 246, 0.75);
    --footer-bg: #f1efe9;

    --accent-50: #e8f3ed;
    --accent-100: #c5e0d2;
    --accent-200: #95cfb1;
    --accent-300: #5fa47e;
    --accent-400: #40916c;
    --accent-500: #2d6a4f;
    --accent-600: #1b4332;
    --accent-700: #142b22;
    --accent-800: #0d1c16;

    --accent: var(--accent-500);
    --accent-bright: var(--accent-300);

    --gradient-primary: linear-gradient(135deg, var(--accent-700) 0%, var(--accent-500) 50%, var(--accent-400) 100%);
    --gradient-text: linear-gradient(135deg, var(--accent-600) 0%, var(--accent-400) 50%, var(--accent-300) 100%);
    --gradient-flow: linear-gradient(110deg, var(--accent-500) 0%, var(--accent-300) 50%, var(--accent-500) 100%);

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
    --shadow-2xl: 0 40px 100px rgba(0, 0, 0, 0.16);

    --radius-xs: 0.5rem;
    --radius-sm: 0.75rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-2xl: 2.5rem;
    --radius-full: 9999px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

    --transition-fast: 0.2s var(--ease-out);
    --transition-base: 0.35s var(--ease-out);
    --transition-slow: 0.6s var(--ease-out);
    --transition-spring: 0.6s var(--ease-spring);

    --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-serif: 'Instrument Serif', 'Noto Serif SC', 'Songti SC', 'Georgia', serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Cascadia Code', monospace;

    --container-max: 1280px;
}

/* 深色模式 */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --bg-primary: #0a0a0b;
        --bg-secondary: #131315;
        --bg-tertiary: #1a1a1d;
        --bg-elevated: #1f1f22;

        --text-primary: #fafaf9;
        --text-secondary: #a1a1aa;
        --text-tertiary: #71717a;
        --text-muted: #52525b;

        --border-color: rgba(255, 255, 255, 0.08);
        --border-strong: rgba(255, 255, 255, 0.16);

        --card-bg: rgba(31, 31, 34, 0.6);
        --card-border: rgba(255, 255, 255, 0.06);
        --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(0, 0, 0, 0.3);

        --header-bg: rgba(10, 10, 11, 0.75);
        --footer-bg: #131315;

        --accent-50: #1a3a2a;
        --accent-100: #1f5237;
        --accent-200: #2d6a4f;
        --accent-300: #52b788;
        --accent-400: #74c69d;
        --accent-500: #95d5b2;
        --accent-600: #b7e4c7;
        --accent-700: #d8f3dc;
        --accent-800: #f0faf2;

        --gradient-text: linear-gradient(135deg, #95d5b2 0%, #74c69d 50%, #52b788 100%);
        --gradient-flow: linear-gradient(110deg, #52b788 0%, #b7e4c7 50%, #52b788 100%);

        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);
        --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
        --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.6), 0 8px 16px rgba(0, 0, 0, 0.4);
        --shadow-2xl: 0 40px 100px rgba(0, 0, 0, 0.7);
    }
}

/* 手动深色主题 */
[data-theme="dark"] {
    --bg-primary: #0a0a0b;
    --bg-secondary: #131315;
    --bg-tertiary: #1a1a1d;
    --bg-elevated: #1f1f22;

    --text-primary: #fafaf9;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --text-muted: #52525b;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.16);

    --card-bg: rgba(31, 31, 34, 0.6);
    --card-border: rgba(255, 255, 255, 0.06);
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 4px 16px rgba(0, 0, 0, 0.3);

    --header-bg: rgba(10, 10, 11, 0.75);
    --footer-bg: #131315;

    --accent-50: #1a3a2a;
    --accent-100: #1f5237;
    --accent-200: #2d6a4f;
    --accent-300: #52b788;
    --accent-400: #74c69d;
    --accent-500: #95d5b2;
    --accent-600: #b7e4c7;
    --accent-700: #d8f3dc;
    --accent-800: #f0faf2;

    --gradient-primary: linear-gradient(135deg, #1b4332 0%, #2d6a4f 50%, #52b788 100%);
    --gradient-text: linear-gradient(135deg, #95d5b2 0%, #74c69d 50%, #52b788 100%);
    --gradient-flow: linear-gradient(110deg, #52b788 0%, #b7e4c7 50%, #52b788 100%);

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4), 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.6), 0 8px 16px rgba(0, 0, 0, 0.4);
    --shadow-2xl: 0 40px 100px rgba(0, 0, 0, 0.7);
}

/* 手动浅色主题 */
[data-theme="light"] {
    --bg-primary: #faf9f6;
    --bg-secondary: #f1efe9;
    --bg-tertiary: #e8e5dc;
    --bg-elevated: #ffffff;

    --text-primary: #0e0e0e;
    --text-secondary: #4a4a4a;
    --text-tertiary: #8a8a85;
    --text-muted: #b5b5ad;

    --border-color: rgba(14, 14, 14, 0.08);
    --border-strong: rgba(14, 14, 14, 0.16);

    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(14, 14, 14, 0.06);
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 16px rgba(0, 0, 0, 0.04);

    --header-bg: rgba(250, 249, 246, 0.85);
    --footer-bg: #f1efe9;

    --accent-50: #e8f3ed;
    --accent-100: #c5e0d2;
    --accent-200: #95cfb1;
    --accent-300: #5fa47e;
    --accent-400: #40916c;
    --accent-500: #2d6a4f;
    --accent-600: #1b4332;
    --accent-700: #142b22;
    --accent-800: #0d1c16;

    --gradient-primary: linear-gradient(135deg, var(--accent-700) 0%, var(--accent-500) 50%, var(--accent-400) 100%);
    --gradient-text: linear-gradient(135deg, var(--accent-600) 0%, var(--accent-400) 50%, var(--accent-300) 100%);
    --gradient-flow: linear-gradient(110deg, var(--accent-500) 0%, var(--accent-300) 50%, var(--accent-500) 100%);

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 24px 60px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
    --shadow-2xl: 0 40px 100px rgba(0, 0, 0, 0.16);
}

/* === 3. 基础排版 === */
body {
    font-family: var(--font-sans);
    font-feature-settings: 'cv11', 'ss01', 'ss03', 'cv02';
    font-variant-numeric: tabular-nums;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.4s var(--ease-out), color 0.4s var(--ease-out);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    position: relative;
    z-index: 0;
    letter-spacing: -0.005em;
}

html {
    background-color: var(--bg-primary);
}

/* 主题过渡 */
html.theme-transition,
html.theme-transition *,
html.theme-transition *::before,
html.theme-transition *::after {
    transition: background-color 0.4s var(--ease-out),
                color 0.4s var(--ease-out),
                border-color 0.4s var(--ease-out),
                box-shadow 0.4s var(--ease-out) !important;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--text-primary);
    font-feature-settings: 'cv11', 'ss01';
}

/* === 4. 容器与布局 === */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.section {
    padding-block: clamp(4rem, 10vw, 8rem);
    position: relative;
}

.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
}

.section-eyebrow::before {
    content: '';
    width: 32px;
    height: 1px;
    background: currentColor;
}

/* === 5. 顶部导航（与主站完全一致） === */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    transition: transform 0.4s var(--ease-out), background-color 0.4s var(--ease-out);
}

.site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    opacity: 0;
    transition: opacity 0.3s var(--ease-out);
    z-index: -1;
}

.site-header.is-scrolled::before {
    opacity: 1;
}

.site-header.is-hidden {
    transform: translateY(-100%);
}

.site-header__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.site-logo__mark {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 900;
    font-size: 0.875rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.5s var(--ease-spring);
    overflow: hidden;
    padding: 4px;
    border: 1px solid var(--border-color);
}

.site-logo__mark img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    border-radius: 4px;
    -webkit-user-drag: none;
    pointer-events: none;
}

.site-logo:hover .site-logo__mark {
    transform: rotate(-12deg) scale(1.08);
}

.site-nav {
    display: none;
}

@media (min-width: 768px) {
    .site-nav {
        display: block;
    }
}

.site-nav__list {
    display: flex;
    gap: 0.25rem;
    padding: 0.25rem;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
}

.nav-link {
    position: relative;
    padding: 0.5rem 1.125rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.nav-link.active {
    color: white;
    background: var(--accent-600);
}

@media (prefers-color-scheme: dark) {
    .nav-link.active {
        color: var(--bg-primary);
    }
}

[data-theme="dark"] .nav-link.active {
    color: var(--bg-primary);
}

/* 移动端底部导航（与主站完全一致） */
.mobile-dock {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    padding: 0.5rem;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
}

@media (min-width: 768px) {
    .mobile-dock { display: none; }
}

.mobile-dock__inner {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
}

.dock-link {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.625rem 0.5rem;
    border-radius: var(--radius-lg);
    color: var(--text-tertiary);
    transition: color var(--transition-fast), transform var(--transition-fast);
    position: relative;
    font-size: 0.6875rem;
    font-weight: 500;
}

.dock-link i {
    font-size: 1.125rem;
    transition: transform var(--transition-fast);
}

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

.dock-link.active {
    color: var(--accent);
}

.dock-link.active i {
    transform: translateY(-2px);
}

.dock-link.active::before {
    content: '';
    position: absolute;
    top: 4px;
    width: 24px;
    height: 3px;
    border-radius: 2px;
    background: var(--accent);
}

/* === 6. 主题切换按钮 === */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.4s var(--ease-spring);
    cursor: pointer;
}

.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: rotate(20deg) scale(1.1);
}

.theme-toggle .fa-sun { display: none; }
.theme-toggle .fa-moon { display: block; }

[data-theme="light"] .theme-toggle .fa-sun { display: block; }
[data-theme="light"] .theme-toggle .fa-moon { display: none; }

[data-theme="dark"] .theme-toggle .fa-sun { display: none; }
[data-theme="dark"] .theme-toggle .fa-moon { display: block; }

/* === 7. 滚动进度条 === */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent);
    z-index: 60;
    width: 0%;
    transition: width 0.1s linear;
    transform-origin: left;
    box-shadow: 0 0 10px var(--accent-300), 0 0 20px var(--accent-200);
}

/* === 8. 按钮 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn i {
    font-size: 0.875em;
    transition: transform var(--transition-fast);
}

.btn:hover i {
    transform: translateX(2px);
}

.btn--primary {
    background: var(--accent-600);
    color: white;
    box-shadow: 0 4px 14px rgba(27, 67, 50, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

@media (prefers-color-scheme: dark) {
    .btn--primary {
        background: var(--accent-300);
        color: var(--accent-800);
        box-shadow: 0 4px 14px rgba(149, 213, 178, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.2);
    }
}

[data-theme="dark"] .btn--primary {
    background: var(--accent-300);
    color: var(--accent-800);
}

.btn--primary:hover {
    background: var(--accent-700);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(27, 67, 50, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .btn--primary:hover {
    background: var(--accent-200);
}

.btn--secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.btn--secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: scale(0.97);
    transition: transform 0.1s;
}

/* === 9. 浮动按钮 === */
.fab-stack {
    position: fixed;
    z-index: 45;
    width: 48px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    bottom: 5.5rem;
    right: 1rem;
}

@media (min-width: 768px) {
    .fab-stack {
        bottom: 2rem;
        right: 2rem;
        gap: 14px;
    }
}

.fab {
    box-sizing: border-box;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    border-radius: 14px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    transition: all 0.35s var(--ease-spring);
    cursor: pointer;
    text-decoration: none;
    overflow: hidden;
    position: relative;
}

.fab > i {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.125rem;
    line-height: 1;
}

.fab:hover {
    background: var(--accent-600);
    color: #ffffff;
    border-color: var(--accent-600);
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .fab:hover {
    background: var(--accent-300);
    color: var(--bg-primary);
}

/* === 10. Footer（与主站完全一致） === */
.site-footer {
    border-top: 1px solid var(--border-color);
    background: var(--footer-bg);
    padding-block: clamp(3rem, 6vw, 5rem);
    margin-bottom: 80px;
}

@media (min-width: 768px) {
    .site-footer { margin-bottom: 0; }
}

.site-footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .site-footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 3rem;
    }
}

.site-footer__brand p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 1rem 0 1.5rem;
    max-width: 36ch;
    font-size: 0.9375rem;
}

.site-footer__socials {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.social-link {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.35s var(--ease-spring);
}

.social-link:hover {
    background: var(--accent-600);
    color: white;
    border-color: var(--accent-600);
    transform: translateY(-3px) scale(1.08);
}

[data-theme="dark"] .social-link:hover {
    background: var(--accent-300);
    color: var(--bg-primary);
}

.site-footer__title {
    font-size: 0.8125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.site-footer__links {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.site-footer__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: color 0.25s, transform 0.25s var(--ease-out);
}

.site-footer__link:hover {
    color: var(--accent);
    transform: translateX(3px);
}

.site-footer__bottom {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: 0.8125rem;
    text-align: center;
}

@media (min-width: 768px) {
    .site-footer__bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.site-footer__bottom a {
    transition: color var(--transition-fast);
}

.site-footer__bottom a:hover {
    color: var(--text-primary);
}

/* === 11. 滚动条 === */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-strong) transparent;
}

/* ============================================================
   博客专属样式
   ============================================================ */

/* === 12. 博客 Hero === */
.blog-main {
    padding-top: 72px;
}

.blog-hero {
    position: relative;
    padding: clamp(4rem, 10vw, 8rem) 0 clamp(2rem, 5vw, 4rem);
    overflow: hidden;
}

.blog-hero--small {
    padding: clamp(3rem, 8vw, 6rem) 0 clamp(1.5rem, 3vw, 3rem);
}

.blog-hero__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.blog-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, var(--border-color) 1px, transparent 1px),
        linear-gradient(to bottom, var(--border-color) 1px, transparent 1px);
    background-size: 64px 64px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 0%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 0%, transparent 80%);
    opacity: 0.6;
}

.blog-hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.blog-hero__orb--1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-200), transparent 70%);
    top: -20%;
    right: -10%;
}

.blog-hero__orb--2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-100), transparent 70%);
    bottom: -20%;
    left: -10%;
}

.blog-hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.blog-hero__title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1;
    margin-top: 0.75rem;
    margin-bottom: 1rem;
}

.blog-hero__desc {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 48ch;
    margin: 0 auto;
    line-height: 1.6;
}

/* === 13. 文章卡片网格 === */
.post-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 720px) {
    .post-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .post-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.post-card {
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--border-strong);
}

.post-card__image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-secondary);
}

.post-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s var(--ease-out);
}

.post-card:hover .post-card__image img {
    transform: scale(1.06);
}

.post-card__image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 0, 0, 0.3));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.post-card:hover .post-card__image::after {
    opacity: 1;
}

.post-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.5rem;
    gap: 0.625rem;
}

.post-card__meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-family: var(--font-mono);
}

.post-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    line-height: 1.3;
}

.post-card__title a {
    color: inherit;
    transition: color var(--transition-fast);
}

.post-card__title a:hover {
    color: var(--accent);
}

.post-card__excerpt {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.post-card__read {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition-fast);
}

.post-card:hover .post-card__read {
    gap: 0.625rem;
}

/* 空状态 */
.post-empty {
    text-align: center;
    padding: 6rem 2rem;
    color: var(--text-tertiary);
}

.post-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.post-empty p {
    font-size: 1.125rem;
}

/* === 14. 分页 === */
.pagination {
    margin-top: var(--space-12);
    display: flex;
    justify-content: center;
}

.pagination__inner {
    display: flex;
    gap: 0.375rem;
    align-items: center;
}

.pagination__inner a,
.pagination__inner span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.pagination__inner a:hover {
    background: var(--accent-50);
    color: var(--accent);
    border-color: var(--accent-200);
    transform: translateY(-1px);
}

.pagination__inner .pagination__item--active {
    background: var(--accent-600);
    color: white;
    border-color: var(--accent-600);
}

[data-theme="dark"] .pagination__inner .pagination__item--active {
    background: var(--accent-300);
    color: var(--bg-primary);
    border-color: var(--accent-300);
}

.pagination__prev,
.pagination__next {
    font-weight: 600;
}

/* === 15. 文章详情 === */
.post-full {
    min-height: 60vh;
}

.post-header {
    padding: clamp(3rem, 8vw, 6rem) 0 clamp(2rem, 4vw, 3rem);
    position: relative;
}

.post-header__back {
    margin-bottom: var(--space-6);
}

.post-header__back a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.post-header__back a:hover {
    color: var(--accent);
}

.post-header__back i {
    transition: transform var(--transition-fast);
}

.post-header__back a:hover i {
    transform: translateX(-3px);
}

.post-header__meta {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.post-header__meta i {
    font-size: 0.75rem;
    margin-right: 0.25rem;
}

.post-header__title {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-4);
}

/* 文章封面 */
.post-cover {
    margin-bottom: var(--space-10);
}

.post-cover img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* === 16. 文章内容排版 === */
.post-content {
    padding-bottom: clamp(3rem, 6vw, 5rem);
}

.post-content .container {
    max-width: 900px;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
    margin-top: 2.5em;
    margin-bottom: 0.75em;
    line-height: 1.25;
}

.post-content h2 {
    font-size: 1.75rem;
    padding-bottom: 0.5em;
    border-bottom: 1px solid var(--border-color);
}

.post-content h3 {
    font-size: 1.375rem;
}

.post-content h4 {
    font-size: 1.125rem;
}

.post-content p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5em;
}

.post-content a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    text-decoration-color: var(--accent-200);
    transition: text-decoration-color var(--transition-fast);
}

.post-content a:hover {
    text-decoration-color: var(--accent);
}

.post-content img {
    border-radius: var(--radius-md);
    margin: 2em auto;
    box-shadow: var(--shadow-md);
}

.post-content blockquote {
    margin: 1.5em 0;
    padding: 1.25em 1.5em;
    border-left: 3px solid var(--accent);
    background: var(--accent-50);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-secondary);
    font-style: italic;
}

[data-theme="dark"] .post-content blockquote {
    background: rgba(82, 183, 136, 0.08);
}

.post-content blockquote p {
    margin-bottom: 0;
}

.post-content code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    padding: 0.15em 0.4em;
    background: var(--bg-secondary);
    border-radius: 4px;
    color: var(--accent-600);
}

[data-theme="dark"] .post-content code {
    color: var(--accent-300);
}

.post-content pre {
    margin: 1.5em 0;
    padding: 1.5em;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow-x: auto;
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .post-content pre {
    background: var(--bg-tertiary);
}

.post-content pre code {
    padding: 0;
    background: none;
    border-radius: 0;
    font-size: 0.875rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.post-content ul,
.post-content ol {
    margin: 1em 0 1.5em;
    padding-left: 1.5em;
    color: var(--text-secondary);
    line-height: 1.8;
}

.post-content ul {
    list-style: disc;
}

.post-content ol {
    list-style: decimal;
}

.post-content li {
    margin-bottom: 0.375em;
}

.post-content li > ul,
.post-content li > ol {
    margin: 0.375em 0;
}

.post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: 0.9375rem;
}

.post-content th,
.post-content td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    text-align: left;
}

.post-content th {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
}

.post-content hr {
    border: none;
    height: 1px;
    background: var(--border-color);
    margin: 2.5em 0;
}

/* === 18. 工具类 === */
.text-mono { font-family: var(--font-mono); }
.text-serif { font-family: var(--font-serif); }
.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === 20. 响应式 === */
@media (max-width: 767px) {
    .blog-hero__title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    .post-header__title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
    .post-header__meta {
        font-size: 0.75rem;
    }
    .post-content h2 {
        font-size: 1.5rem;
    }
    .post-content h3 {
        font-size: 1.25rem;
    }
    .post-content p {
        font-size: 1rem;
    }
    .post-footer__inner {
        flex-direction: column;
        gap: var(--space-4);
    }
}