:root {
    --iac-bg: #f6f5fa;
    --iac-surface: #ffffff;
    --iac-surface-tint: #faf9fe;
    --iac-text: #1d1d1f;
    --iac-muted: #6e6e73;
    --iac-border: #e3e1ea;
    --iac-accent: #6b8cce;
    --iac-accent-hover: #5a7bc0;
    --iac-accent-soft: #e5edf9;
    --iac-lilac: #ebe6f7;
    --iac-peach: #faefe6;
    --iac-mint: #e6f3ed;
    --iac-radius: 12px;
    --iac-radius-lg: 18px;
    --iac-shadow: 0 1px 2px rgba(90, 100, 140, 0.05), 0 8px 28px rgba(107, 140, 206, 0.1);
    --iac-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", system-ui, sans-serif;
    --iac-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--iac-font);
    font-size: 17px;
    line-height: 1.47059;
    letter-spacing: -0.022em;
    color: var(--iac-text);
    background: linear-gradient(165deg, #f8f6fc 0%, #f3f7fc 42%, #f5faf6 100%);
}

body::before,
body::after {
    content: "";
    position: fixed;
    border-radius: 50%;
    filter: blur(72px);
    opacity: 0.45;
    pointer-events: none;
    z-index: -1;
}

body::before {
    width: 28rem;
    height: 28rem;
    top: -8rem;
    right: -6rem;
    background: #cfe0f5;
}

body::after {
    width: 24rem;
    height: 24rem;
    bottom: -6rem;
    left: -5rem;
    background: #e4daf5;
}

body.iac-body--project::before,
body.iac-body--project::after {
    opacity: 0.35;
}

body.iac-body--project::before {
    background: var(--iac-page-from, #cfe0f5);
}

body.iac-body--project::after {
    background: var(--iac-page-to, #e4daf5);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.iac-skip {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.iac-skip:focus {
    left: 1rem;
    top: 1rem;
    width: auto;
    height: auto;
    padding: 0.5rem 1rem;
    background: var(--iac-accent);
    color: #fff;
    border-radius: 8px;
    z-index: 100;
}

.iac-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    background: rgba(248, 246, 252, 0.78);
    border-bottom: 1px solid rgba(210, 206, 228, 0.55);
}

.iac-nav-inner {
    max-width: 72rem;
    margin: 0 auto;
    padding: 0.75rem 1.25rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
}

@media (max-width: 767px) {
    .iac-nav-user span {
        display: none;
    }
}

@media (min-width: 768px) {
    .iac-nav-inner {
        padding: 0.875rem 2rem;
    }
}

.iac-logo {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--iac-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.iac-logo:hover {
    color: #7a6eb8;
}

.iac-nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.iac-nav-links a {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    font-size: 0.875rem;
    color: var(--iac-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: color 0.2s ease, background 0.2s ease;
    cursor: pointer;
}

.iac-nav-links a:hover {
    color: var(--iac-text);
    background: var(--iac-accent-soft);
}

.iac-nav-links a[aria-current="page"] {
    color: #4a5f85;
    background: linear-gradient(135deg, var(--iac-accent-soft) 0%, var(--iac-lilac) 100%);
    font-weight: 500;
}

.iac-nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--iac-muted);
}

.iac-main {
    max-width: 72rem;
    margin: 0 auto;
    padding: 2.5rem 1.25rem 4rem;
}

@media (min-width: 768px) {
    .iac-main {
        padding: 3.5rem 2rem 5rem;
    }
}

.iac-hero-title {
    margin: 0 0 0.5rem;
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.05;
    background: linear-gradient(135deg, #1d1d1f 0%, #4a5f85 55%, #7a6eb8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.iac-hero-sub {
    margin: 0 0 2.5rem;
    font-size: 1.25rem;
    color: var(--iac-muted);
    font-weight: 400;
    letter-spacing: -0.01em;
    max-width: 36rem;
}

.iac-projects-block + .iac-projects-block {
    margin-top: 2.5rem;
}

#projects-starred-block {
    padding: 1.25rem 1.25rem 0.25rem;
    border-radius: var(--iac-radius-lg);
    background: linear-gradient(145deg, rgba(250, 239, 230, 0.65) 0%, rgba(237, 230, 247, 0.55) 100%);
    border: 1px solid rgba(220, 210, 240, 0.5);
}

#projects-starred-block .iac-section-title {
    color: #8a7aa8;
}

.iac-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .iac-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.iac-card-wrap {
    position: relative;
}

.iac-star-btn {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    z-index: 2;
    display: flex;
    isolation: isolate;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--iac-muted);
    cursor: pointer;
    overflow: visible;
    transition: color 0.2s ease, background 0.2s ease;
}

.iac-star-btn:hover {
    color: var(--iac-text);
    background: var(--iac-peach);
}

.iac-star-btn:focus-visible {
    outline: 2px solid var(--iac-accent);
    outline-offset: 2px;
}

.iac-star-btn.is-starred {
    color: #c99700;
}

.iac-star-btn.is-starred:hover {
    color: #a67c00;
}

.iac-star-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: block;
    flex-shrink: 0;
    overflow: visible;
}

.iac-star-icon-outline {
    width: 1.3125rem;
    height: 1.3125rem;
}

.iac-star-icon-filled {
    width: 1.1875rem;
    height: 1.1875rem;
    display: none;
}

.iac-star-btn.is-starred .iac-star-icon-outline {
    display: none;
}

.iac-star-btn.is-starred .iac-star-icon-filled {
    display: block;
}

.iac-card {
    display: block;
    padding: 1.5rem;
    padding-right: 2.75rem;
    background: linear-gradient(160deg, #ffffff 0%, var(--iac-surface-tint) 100%);
    border: 1px solid rgba(210, 206, 228, 0.85);
    border-radius: var(--iac-radius-lg);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    cursor: pointer;
}

.iac-card:hover {
    border-color: #c8c4e0;
    box-shadow: var(--iac-shadow);
    transform: translateY(-1px);
    filter: saturate(1.05);
}

.iac-project-hero {
    margin: 0 0 2rem;
    padding: 1.5rem 1.5rem 1.25rem;
    border-radius: var(--iac-radius-lg);
    border: 1px solid rgba(210, 206, 228, 0.6);
    background: rgba(255, 255, 255, 0.72);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.iac-project-hero-head {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.iac-project-hero .iac-project-avatar {
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.0625rem;
}

.iac-hero-title--inline {
    margin-bottom: 0.35rem;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.iac-hero-sub--inline {
    margin: 0;
    font-size: 1.0625rem;
}

.iac-card-head {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.iac-card-body {
    min-width: 0;
    flex: 1;
}

.iac-project-avatar {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: rgba(29, 29, 31, 0.72);
    line-height: 1;
}

.iac-card-title {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.iac-card-meta {
    margin: 0.35rem 0 0;
    font-size: 0.875rem;
    color: var(--iac-muted);
}

.iac-section {
    margin-bottom: 2rem;
}

.iac-section-title {
    margin: 0 0 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #8b8fa8;
}

.iac-section-title::before {
    content: "";
    display: inline-block;
    width: 0.4rem;
    height: 0.4rem;
    margin-right: 0.45rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #9eb8e8, #b8a8e0);
    vertical-align: middle;
}

.iac-pill-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.iac-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--iac-muted);
    background: var(--iac-surface);
    border: 1px solid var(--iac-border);
    border-radius: 999px;
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    cursor: pointer;
}

.iac-pill:hover {
    color: var(--iac-text);
    border-color: #c8c4e0;
    background: var(--iac-accent-soft);
}

.iac-pill.is-active {
    color: #445a82;
    background: linear-gradient(135deg, var(--iac-accent-soft) 0%, var(--iac-lilac) 100%);
    border-color: #b8c8e8;
}

.iac-panel {
    background: linear-gradient(160deg, #ffffff 0%, var(--iac-surface-tint) 100%);
    border: 1px solid var(--iac-border);
    border-radius: var(--iac-radius-lg);
    padding: 1.5rem;
}

.iac-panel + .iac-panel {
    margin-top: 1rem;
}

.iac-panel h2,
.iac-panel h3 {
    margin: 0 0 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.iac-panel p {
    margin: 0 0 1rem;
    color: var(--iac-muted);
    font-size: 0.9375rem;
}

.iac-panel p:last-child {
    margin-bottom: 0;
}

.iac-alert {
    padding: 0.875rem 1rem;
    border-radius: var(--iac-radius);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.iac-alert-warning {
    background: linear-gradient(135deg, #fff8ee 0%, #faf0e6 100%);
    border: 1px solid #edd9b8;
    color: #7a6340;
}

.iac-code-wrap {
    position: relative;
    margin: 0.75rem 0 1rem;
}

.iac-code {
    display: block;
    width: 100%;
    margin: 0;
    padding: 1rem 3.25rem 1rem 1rem;
    font-family: var(--iac-mono);
    font-size: 0.8125rem;
    line-height: 1.5;
    color: var(--iac-text);
    background: linear-gradient(160deg, #f3f6fb 0%, #f0f4fa 100%);
    border: 1px solid var(--iac-border);
    border-radius: var(--iac-radius);
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.iac-copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
    font-family: var(--iac-font);
    font-weight: 500;
    color: var(--iac-muted);
    background: var(--iac-surface);
    border: 1px solid var(--iac-border);
    border-radius: 6px;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.iac-copy-btn:hover {
    color: var(--iac-text);
    border-color: #b8b8bd;
}

.iac-copy-btn:focus-visible {
    outline: 2px solid var(--iac-accent);
    outline-offset: 2px;
}

.iac-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.6rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--iac-font);
    color: #fff;
    background: linear-gradient(135deg, #7ba3d4 0%, #9a8ed4 100%);
    border: none;
    border-radius: 980px;
    text-decoration: none;
    cursor: pointer;
    transition: filter 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 2px 12px rgba(107, 140, 206, 0.28);
}

.iac-btn:hover {
    filter: brightness(1.04);
    box-shadow: 0 4px 16px rgba(107, 140, 206, 0.34);
}

.iac-btn:focus-visible {
    outline: 2px solid var(--iac-accent);
    outline-offset: 2px;
}

.iac-btn-secondary {
    color: #5a7bc0;
    background: var(--iac-accent-soft);
    border: 1px solid #c4d4ec;
    box-shadow: none;
}

.iac-btn-secondary:hover {
    background: linear-gradient(135deg, var(--iac-accent-soft) 0%, var(--iac-lilac) 100%);
    border-color: #a8bce8;
    filter: none;
}

.iac-link {
    color: var(--iac-accent);
    text-decoration: none;
    transition: opacity 0.2s ease;
    cursor: pointer;
}

.iac-link:hover {
    text-decoration: underline;
}

.iac-two-col {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 900px) {
    .iac-two-col {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }
}

.iac-config {
    margin: 0;
    padding: 1rem;
    max-height: 28rem;
    overflow: auto;
    font-family: var(--iac-mono);
    font-size: 0.75rem;
    line-height: 1.55;
    color: var(--iac-text);
    background: linear-gradient(160deg, #f2f6fb 0%, #eef2f8 100%);
    border: 1px solid var(--iac-border);
    border-radius: var(--iac-radius);
    white-space: pre-wrap;
    word-break: break-word;
}

.iac-kv {
    font-size: 0.875rem;
    color: var(--iac-muted);
}

.iac-kv strong {
    color: var(--iac-text);
    font-weight: 500;
}

.iac-prose {
    font-size: 1.0625rem;
    line-height: 1.6;
    letter-spacing: -0.01em;
}

.iac-prose h2 {
    margin: 2.5rem 0 1rem;
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    scroll-margin-top: 5rem;
}

.iac-prose h3 {
    margin: 2rem 0 0.75rem;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    scroll-margin-top: 5rem;
}

.iac-prose p,
.iac-prose li {
    color: var(--iac-muted);
}

.iac-prose ul,
.iac-prose ol {
    margin: 0 0 1rem;
    padding-left: 1.35rem;
}

.iac-prose a {
    color: var(--iac-accent);
}

.iac-prose code {
    font-family: var(--iac-mono);
    font-size: 0.875em;
    padding: 0.15em 0.4em;
    background: var(--iac-accent-soft);
    border-radius: 4px;
}

.iac-toc {
    padding: 1.25rem 1.5rem;
    background: linear-gradient(145deg, #ffffff 0%, var(--iac-lilac) 120%);
    border: 1px solid var(--iac-border);
    border-radius: var(--iac-radius-lg);
    margin-bottom: 2.5rem;
}

.iac-toc ul {
    margin: 0;
    padding-left: 1.25rem;
    list-style: none;
}

.iac-toc > ul {
    padding-left: 0;
}

.iac-toc li {
    margin: 0.35rem 0;
    font-size: 0.9375rem;
}

.iac-toc a {
    color: var(--iac-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.iac-toc a:hover {
    color: var(--iac-accent);
}

.iac-footer {
    max-width: 72rem;
    margin: 0 auto;
    padding: 2rem 1.25rem;
    border-top: 1px solid rgba(210, 206, 228, 0.6);
    font-size: 0.8125rem;
    color: #9498b0;
    text-align: center;
}

.iac-auth {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem;
    text-align: center;
}

.iac-auth-mark {
    margin: 0 0 3rem;
    font-size: clamp(3rem, 12vw, 4.5rem);
    font-weight: 600;
    letter-spacing: -0.05em;
    line-height: 1;
    background: linear-gradient(135deg, #1d1d1f 0%, #6b8cce 50%, #9a8ed4 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.iac-auth-card {
    width: 100%;
    max-width: 22rem;
    padding: 2rem;
    background: linear-gradient(160deg, #ffffff 0%, var(--iac-surface-tint) 100%);
    border: 1px solid var(--iac-border);
    border-radius: var(--iac-radius-lg);
    box-shadow: var(--iac-shadow);
}

.iac-empty {
    padding: 3rem 2rem;
    text-align: center;
    color: var(--iac-muted);
    background: linear-gradient(160deg, #ffffff 0%, var(--iac-mint) 100%);
    border: 1px dashed #c4ddd4;
    border-radius: var(--iac-radius-lg);
}