:root {
    --bg-1: #061321;
    --bg-2: #0e2f45;
    --surface: rgba(7, 22, 36, 0.88);
    --surface-2: rgba(6, 18, 30, 0.74);
    --line: rgba(118, 163, 193, 0.28);
    --text: #e8f3fb;
    --muted: #a9c4d6;
    --accent: #37d8ad;
    --accent-2: #f0c860;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    color: var(--text);
    background:
        radial-gradient(1100px 520px at 76% -18%, #225f86 0%, transparent 60%),
        linear-gradient(160deg, var(--bg-1), var(--bg-2));
    font-family: "Segoe UI", Tahoma, sans-serif;
}

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

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 18px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 8;
    border-bottom: 1px solid var(--line);
    background: rgba(3, 10, 18, 0.86);
    backdrop-filter: blur(10px);
}

.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    letter-spacing: 0.08em;
}

.brand-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 14px rgba(55, 216, 173, 0.6);
}

.home-link {
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 8px 12px;
    color: #d9edf8;
    font-size: 14px;
}

.hero {
    padding: 56px 0 28px;
}

.hero-wrap {
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--surface);
    padding: 24px;
}

.kicker {
    display: inline-flex;
    border: 1px solid rgba(55, 216, 173, 0.36);
    border-radius: 999px;
    padding: 6px 12px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #b9f7e7;
    background: rgba(10, 49, 47, 0.48);
}

h1 {
    margin: 14px 0 12px;
    font-size: clamp(30px, 4vw, 48px);
    line-height: 1.06;
}

.hero p {
    margin: 0;
    color: var(--muted);
    font-size: 17px;
    max-width: 76ch;
}

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

.btn {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 14px;
    font-weight: 700;
}

.btn-primary {
    border-color: rgba(97, 237, 198, 0.5);
    background: rgba(20, 102, 91, 0.3);
    color: #c9f8ea;
}

.btn-soft {
    background: rgba(8, 28, 44, 0.72);
    color: #d3e9f6;
}

.section {
    margin-top: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface-2);
    padding: 20px;
}

.section h2 {
    margin: 0;
    font-size: clamp(23px, 3vw, 34px);
}

.section p {
    color: var(--muted);
    line-height: 1.56;
    margin: 10px 0 0;
}

.chips {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.chip {
    border: 1px solid rgba(118, 163, 193, 0.34);
    border-radius: 999px;
    padding: 7px 10px;
    font-size: 13px;
    color: #dbedf9;
    background: rgba(6, 21, 33, 0.7);
}

.grid {
    margin-top: 14px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 12px;
    background: rgba(4, 15, 25, 0.66);
}

.card h3 {
    margin: 0;
    font-size: 17px;
}

.card p {
    margin: 8px 0 0;
    font-size: 14px;
}

.step-list {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 9px;
}

.step-item {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px;
    background: rgba(4, 15, 25, 0.58);
}

.step-item strong {
    color: var(--accent-2);
}

.faq {
    margin-top: 12px;
    display: grid;
    gap: 9px;
}

.faq details {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 10px 12px;
    background: rgba(5, 16, 27, 0.65);
}

.faq summary {
    cursor: pointer;
    font-weight: 700;
}

.faq p {
    margin-top: 8px;
    font-size: 14px;
}

.learn {
    border-left: 3px solid var(--accent);
    padding-left: 10px;
    margin-top: 12px;
}

.footer {
    margin-top: 16px;
    border-top: 1px solid var(--line);
    text-align: center;
    color: var(--muted);
    padding: 18px 14px 28px;
    font-size: 13px;
}

@media (max-width: 900px) {
    .grid {
        grid-template-columns: 1fr;
    }
}