:root {
    --bg: #061625;
    --bg-soft: #0b2438;
    --accent: #28cfcf;
    --text: #ffffff;
    --text-muted: #b5c7d6;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: Inter, system-ui, -apple-system, sans-serif;
}

body {
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 80px 24px;
}

/* Header / Hero */
header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.logo {
    max-width: 160px;
    margin-bottom: 32px;
}

h1 {
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 24px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 18px;
    margin-bottom: 36px;
}

.cta {
    display: flex;
    gap: 16px;
}

.btn {
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    border: 2px solid transparent;
    transition: 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: #003333;
}

.btn-primary:hover {
    background: #1fb5b5;
}

.btn-secondary {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-secondary:hover {
    background: rgba(40, 207, 207, 0.1);
}

.hero-visual {
    background: radial-gradient(circle at center, #0f3b5a, transparent 70%);
    border-radius: 24px;
    padding: 80px;
    text-align: center;
    color: var(--text-muted);
}

/* Sections */
section {
    margin-top: 120px;
}

h2 {
    font-size: 32px;
    margin-bottom: 48px;
}

/* Problems / Solutions */
.comparison {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.card {
    background: var(--bg-soft);
    padding: 28px;
    border-radius: 16px;
}

.bad {
    color: #ff7a7a;
}

.good {
    color: #5cffc9;
}

/* Competencies */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.card p {
    color: var(--text-muted);
    margin-top: 12px;
    font-size: 15px;
}

/* USP */
.list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.list div {
    background: var(--bg-soft);
    padding: 24px;
    border-radius: 12px;
}

/* Tech stack */
.stack {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stack h3 {
    margin-bottom: 12px;
    color: var(--accent);
}

ul {
    list-style: none;
    color: var(--text-muted);
}

ul li {
    margin-bottom: 8px;
}

footer {
    margin-top: 120px;
    padding: 40px 24px;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid #0f2d44;
}

@media (max-width: 900px) {
    header,
    .comparison,
    .grid-4,
    .list,
    .stack {
    grid-template-columns: 1fr;
    }
}