:root {
    --bg-primary: #f4f0e8;
    --bg-soft: rgba(255, 255, 255, 0.62);
    --bg-card: rgba(255, 255, 255, 0.72);
    --bg-strong: #fffdfa;
    --text-primary: #1f2937;
    --text-secondary: #52606d;
    --text-tertiary: #7d8894;
    --line: rgba(31, 41, 55, 0.12);
    --line-strong: rgba(31, 41, 55, 0.2);
    --accent: #213246;
    --accent-soft: #dce6ef;
    --shadow: 0 24px 80px rgba(33, 50, 70, 0.12);
    --shadow-soft: 0 16px 40px rgba(33, 50, 70, 0.08);
    --max-width: 1120px;
    --content-width: 760px;
    --header-height: 78px;
    --radius-lg: 28px;
    --radius-md: 20px;
    --radius-sm: 14px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    font-family: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: var(--text-primary);
    background:
        radial-gradient(circle at top left, rgba(255, 255, 255, 0.95), transparent 34%),
        radial-gradient(circle at 80% 10%, rgba(220, 230, 239, 0.8), transparent 24%),
        linear-gradient(180deg, #f8f4ee 0%, #efebe3 100%);
    line-height: 1.7;
}

a {
    color: inherit;
}

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

#particles-canvas {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.page-shell {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
}

.ambient {
    position: fixed;
    z-index: 0;
    border-radius: 999px;
    filter: blur(22px);
    opacity: 0.65;
    pointer-events: none;
}

.ambient-one {
    top: 120px;
    right: -60px;
    width: 220px;
    height: 220px;
    background: rgba(204, 218, 228, 0.75);
}

.ambient-two {
    top: 460px;
    left: -80px;
    width: 280px;
    height: 280px;
    background: rgba(244, 227, 205, 0.6);
}

.site-header,
.main-content,
.site-footer {
    position: relative;
    z-index: 1;
}

.site-header {
    position: sticky;
    top: 0;
    padding: 18px 20px 0;
    z-index: 10;
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    min-height: var(--header-height);
    padding: 0 22px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid rgba(255, 255, 255, 0.55);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.62);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-soft);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-mark {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, #1d2a3a, #44596f);
    color: #f8f4ee;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
}

.logo-text {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.04em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-nav a {
    padding: 10px 14px;
    border-radius: 999px;
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: background-color 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
    background: rgba(33, 50, 70, 0.08);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    border-radius: 50%;
    background: rgba(33, 50, 70, 0.06);
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: var(--accent);
}

.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 34px 20px 72px;
}

.glass-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.hero-section {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.85fr);
    gap: 28px;
    align-items: stretch;
    margin-top: 12px;
}

.hero-copy,
.identity-card,
.category-panel,
.featured-card,
.post-card,
.category-hero,
.post-detail,
.empty-state {
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}

.hero-copy {
    padding: 56px;
    position: relative;
    overflow: hidden;
}

.hero-copy::after {
    content: "";
    position: absolute;
    right: 32px;
    top: 32px;
    width: 140px;
    height: 140px;
    border-radius: 24px;
    border: 1px solid rgba(33, 50, 70, 0.08);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.4), rgba(220, 230, 239, 0.2));
    transform: rotate(14deg);
}

.eyebrow,
.panel-kicker,
.featured-category,
.identity-role {
    color: var(--text-tertiary);
    font-size: 0.8rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.hero-copy h1,
.category-hero h1 {
    max-width: 11ch;
    margin-top: 16px;
    font-size: clamp(2.8rem, 5vw, 4.8rem);
    line-height: 1.06;
    letter-spacing: -0.05em;
}

.hero-intro,
.category-intro {
    max-width: 58ch;
    margin-top: 22px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 28px;
}

.hero-actions a,
.category-summary a,
.panel-head a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.hero-actions a:first-child {
    background: linear-gradient(135deg, #203042, #394d62);
    border-color: transparent;
    color: #f8f4ee;
}

.hero-actions a:hover,
.category-summary a:hover,
.panel-head a:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
}

.identity-card {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.identity-top {
    display: flex;
    align-items: center;
    gap: 18px;
}

.profile-avatar {
    width: 78px;
    height: 78px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 24px;
    background: linear-gradient(135deg, #1e2d3f, #607385);
    color: #f8f4ee;
    font-size: 2rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.identity-top h2 {
    font-size: 2rem;
    letter-spacing: -0.04em;
}

.identity-bio {
    margin-top: 26px;
    color: var(--text-secondary);
}

.skill-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
}

.skill-list span,
.tag,
.category-pills a {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 0 12px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.65);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
}

.identity-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 30px;
}

.identity-stats div {
    padding: 16px 14px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.55);
    border: 1px solid rgba(31, 41, 55, 0.08);
}

.identity-stats dt {
    color: var(--text-tertiary);
    font-size: 0.82rem;
}

.identity-stats dd {
    margin-top: 6px;
    font-size: 1.05rem;
    font-weight: 600;
}

.section-block {
    margin-top: 34px;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 20px;
}

.section-heading h2 {
    margin-top: 8px;
    font-size: 2rem;
    letter-spacing: -0.04em;
}

.section-heading p:last-child {
    max-width: 42ch;
    color: var(--text-secondary);
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.featured-card,
.post-card {
    display: block;
    padding: 28px;
    text-decoration: none;
    color: inherit;
    transform: translateY(14px);
    opacity: 0;
    animation: fade-up 0.55s ease forwards;
    animation-delay: var(--delay, 0s);
}

.featured-card h3,
.post-card h2,
.post-card h4 {
    margin-top: 12px;
    font-size: 1.45rem;
    line-height: 1.32;
    letter-spacing: -0.03em;
}

.post-card h4 {
    font-size: 1.25rem;
}

.featured-card p:last-of-type,
.post-card .description {
    margin-top: 14px;
    color: var(--text-secondary);
}

.featured-card span {
    display: inline-block;
    margin-top: 20px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.featured-card:hover,
.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 26px 90px rgba(33, 50, 70, 0.16);
}

.category-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.category-pills a:hover,
.tag:hover,
.skill-list span:hover {
    border-color: var(--line-strong);
}

.category-sections {
    display: grid;
    gap: 20px;
}

.category-panel {
    padding: 28px;
}

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

.panel-head h3 {
    margin-top: 6px;
    font-size: 1.7rem;
    letter-spacing: -0.04em;
}

.compact-posts {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.post-list {
    display: grid;
    gap: 18px;
}

.empty-inline {
    padding: 22px;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--line);
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.45);
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.category-hero {
    padding: 46px;
}

.category-summary {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 24px;
    color: var(--text-secondary);
}

.post-detail {
    max-width: var(--content-width);
    margin: 12px auto 0;
    padding: 36px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 28px;
    color: var(--text-secondary);
    text-decoration: none;
}

.post-header {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
}

.post-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.14;
    letter-spacing: -0.05em;
}

.post-content {
    margin-top: 28px;
    font-size: 1.02rem;
}

.post-content h2 {
    margin: 34px 0 14px;
    font-size: 1.6rem;
    letter-spacing: -0.03em;
}

.post-content h3 {
    margin: 26px 0 12px;
    font-size: 1.25rem;
}

.post-content p,
.post-content ul,
.post-content ol,
.post-content pre {
    margin-bottom: 18px;
}

.post-content ul,
.post-content ol {
    padding-left: 22px;
}

.post-content pre,
.post-content code {
    font-family: "Cascadia Code", "Consolas", monospace;
}

.post-content pre {
    overflow-x: auto;
    padding: 18px 20px;
    border-radius: var(--radius-sm);
    background: rgba(248, 244, 238, 0.95);
    border: 1px solid rgba(31, 41, 55, 0.08);
}

.post-content code {
    padding: 2px 6px;
    border-radius: 8px;
    background: rgba(248, 244, 238, 0.95);
}

.post-content pre code {
    padding: 0;
    background: transparent;
}

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

.post-content img {
    margin: 22px auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

.note-network {
    margin-top: 36px;
    display: grid;
    gap: 18px;
}

.note-panel {
    padding-top: 24px;
    border-top: 1px solid var(--line);
}

.note-panel h2 {
    font-size: 1.2rem;
    letter-spacing: -0.03em;
}

.note-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.note-link-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.note-link-card strong {
    font-size: 1rem;
}

.note-link-card span {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.note-link-card:hover {
    transform: translateY(-2px);
    border-color: var(--line-strong);
    background: rgba(255, 255, 255, 0.74);
}

.empty-state {
    padding: 48px 28px;
    text-align: center;
}

.empty-state h2 {
    font-size: 1.5rem;
    letter-spacing: -0.03em;
}

.empty-state p {
    margin-top: 10px;
    color: var(--text-secondary);
}

.site-footer {
    padding: 0 20px 34px;
}

.site-footer p {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 18px 24px;
    color: var(--text-tertiary);
    text-align: center;
    border-top: 1px solid rgba(31, 41, 55, 0.08);
}

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #223446, #75889c);
    z-index: 20;
}

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

::-webkit-scrollbar {
    width: 9px;
    height: 9px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.4);
}

::-webkit-scrollbar-thumb {
    background: rgba(33, 50, 70, 0.22);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(33, 50, 70, 0.36);
}

@media (max-width: 980px) {
    .hero-section,
    .featured-grid,
    .compact-posts {
        grid-template-columns: 1fr;
    }

    .section-heading,
    .panel-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-copy {
        padding: 42px 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 68px;
        --radius-lg: 22px;
    }

    .site-header {
        padding-top: 12px;
    }

    .header-inner {
        padding: 0 16px;
    }

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

    .site-nav {
        position: absolute;
        top: calc(100% + 10px);
        left: 12px;
        right: 12px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border-radius: 24px;
        background: rgba(255, 255, 255, 0.86);
        border: 1px solid rgba(255, 255, 255, 0.72);
        backdrop-filter: blur(18px);
        box-shadow: var(--shadow-soft);
    }

    .site-nav.active {
        display: flex;
    }

    .site-nav a {
        padding: 12px 14px;
        background: rgba(33, 50, 70, 0.04);
    }

    .main-content {
        padding-top: 20px;
    }

    .hero-copy,
    .identity-card,
    .category-hero,
    .post-detail,
    .category-panel,
    .featured-card,
    .post-card {
        padding: 24px;
    }

    .hero-copy h1,
    .category-hero h1,
    .post-header h1 {
        max-width: none;
        font-size: clamp(2rem, 10vw, 3rem);
    }

    .identity-top {
        align-items: flex-start;
    }

    .identity-stats {
        grid-template-columns: 1fr;
    }

    .hero-actions,
    .category-summary,
    .category-pills,
    .post-meta,
    .tags {
        gap: 10px;
    }

    .note-links {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .featured-card,
    .post-card,
    .site-nav a,
    .hero-actions a,
    .category-summary a,
    .panel-head a {
        animation: none;
        transition: none;
        transform: none;
        opacity: 1;
    }
}