:root {
    --bg: #0b1020;
    --border: rgba(255,255,255,.10);
    --text: #f5f7ff;
    --muted: rgba(255,255,255,.72);
    --link: #93c5fd;
    --accent: #93c5fd;
    --accent2: #a7f3d0;
    --radius: 18px;
    --font: "Noto Sans SC","PingFang SC","Microsoft YaHei","Heiti SC",system-ui,-apple-system,Segoe UI,Roboto,Arial;
}

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

html, body {
    margin: 0;
    padding: 0;
    background: radial-gradient(1100px 600px at 20% 0%, rgba(147,197,253,.18), transparent 60%),
                radial-gradient(900px 600px at 90% 20%, rgba(167,243,208,.12), transparent 65%),
                var(--bg);
    color: var(--text);
    font-family: var(--font);
    line-height: 1.55;
    min-height: 100vh;
}

a {
    color: var(--link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.container, .wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 18px 16px;
}

/* Header / Navigation */
.topbar, .site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(11,16,32,.82);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
}

.header-container, .topbar-inner {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
    max-width: 1120px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    gap: 12px;
    align-items: center;
}

.logo {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    box-shadow: 0 8px 24px rgba(0,0,0,.35);
}

.brand .title, .site-title {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
}

.brand .subtitle {
    font-size: 12px;
    color: var(--muted);
}

.nav, .site-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.nav a, .site-nav a {
    color: var(--text);
    font-size: 14px;
    padding: 7px 10px;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.nav a:hover, .site-nav a:hover,
.nav a.active, .site-nav a.active {
    border-color: var(--border);
    background: rgba(255,255,255,.05);
    text-decoration: none;
}

/* Hero Section */
.hero {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
    padding: 24px;
    margin-bottom: 24px;
}

.hero h1 {
    margin: 0 0 10px 0;
    font-size: 34px;
    line-height: 1.12;
    color: var(--text);
}

.hero p {
    margin: 10px 0 0;
    color: var(--muted);
}

/* Cards */
.card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255,255,255,.03);
    padding: 18px;
    margin-bottom: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,.2);
}

.card h2, .card h3 {
    color: var(--text);
    margin-bottom: 12px;
}

.card h3 a {
    color: var(--text);
}

.card h3 a:hover {
    color: var(--link);
}

/* Pills / Badges */
.pill {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    border: 1px solid var(--border);
    background: rgba(255,255,255,.04);
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 12px;
    color: var(--muted);
}

.pill strong {
    color: var(--text);
    font-weight: 700;
}

/* Buttons */
.btn {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    padding: 10px 14px;
    border-radius: 14px;
    border: 1px solid rgba(147,197,253,.35);
    background: linear-gradient(135deg, rgba(147,197,253,.22), rgba(167,243,208,.14));
    color: var(--text);
    font-weight: 700;
    cursor: pointer;
    transition: filter 0.2s;
}

.btn:hover {
    text-decoration: none;
    filter: brightness(1.05);
}

/* Footer */
.footer, .site-footer {
    border-top: 1px solid var(--border);
    margin-top: 40px;
    padding: 24px 16px;
    background: rgba(0,0,0,.22);
    text-align: center;
    color: var(--muted);
}

/* Grids */
.grid2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.grid3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* Contact Section */
.contact-universel {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255,255,255,.03);
    padding: 24px;
    margin-top: 30px;
    text-align: center;
}

.contact-universel h3 {
    color: var(--text);
    margin-bottom: 20px;
}

.contact-universel a {
    color: var(--link);
}

/* Responsive */
@media (max-width: 900px) {
    .grid2, .grid3 {
        grid-template-columns: 1fr;
    }
    .header-container {
        flex-direction: column;
    }
}

/* Utilitaires */
.muted {
    color: var(--muted);
}

.row {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: flex-start;
    flex-wrap: wrap;
}

.meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}