:root {
    --bg: #0b1220;
    --surface: #111827;
    --text: #f1f5f9;
    --muted: #94a3b8;
    --primary: #3b82f6;
    --border: #1f2937;
    --header-height: 70px;
    --footer-height: 60px;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
}

/* Layout */

.container {
    max-width: 1100px;
    margin: auto;
    padding: 0 20px;
}

main {
    flex: 1;
}

/* Header */

.header {
    height: var(--header-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand-name {
    font-weight: 600;
}

.brand-role {
    font-size: 13px;
    color: var(--muted);
}

.nav {
    display: flex;
    gap: 20px;
}

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

.material-symbols-rounded {
    font-size: 22px;
}

/* Hero */

.hero {
    padding: 100px 0 70px;
    text-align: center;
}

.hero-title {
    font-size: clamp(38px, 5vw, 56px);
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1.1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-sub {
    font-size: 18px;
    line-height: 1.7;
    max-width: 760px;
    margin: 24px auto 0;
    color: var(--muted);
}

/* Hero Meta Cards */

.hero-meta {
    margin-top: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.meta-card {
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border-radius: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--primary);
    transition: all 0.2s ease;
}

.meta-card:hover {
    border-color: var(--primary);
    background: rgba(59,130,246,0.08);
    transform: translateY(-2px);
}

/* Expertise */

.expertise {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    padding: 60px 0 80px;
}

.card {
    background: var(--surface);
    padding: 28px;
    border-radius: 14px;
    border: 1px solid var(--border);
    transition: all 0.25s ease;
}

.card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.icon-large {
    font-size: 32px;
    color: var(--primary);
    margin-bottom: 14px;
}

.card h3 {
    margin: 0 0 12px 0;
}

.card-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
    font-size: 15px;
    color: var(--muted);
}

.card-list li {
    position: relative;
    padding-left: 18px;
}

.card-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
}

/* Footer */

.footer {
    height: var(--footer-height);
    border-top: 1px solid var(--border);
    background: var(--surface);
    display: flex;
    align-items: center;
}

.footer-inner {
    width: 100%;
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--muted);
}

/* Responsive */

@media (max-width: 768px) {
    .hero {
        padding: 70px 0 50px;
    }

    .hero-sub {
        font-size: 16px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 6px;
        text-align: center;
    }
}