:root {
    --bg: #f5f6f8;
    --card: #ffffff;

    --text: #111827;
    --muted: #6b7280;

    --primary: #4f46e5;

    --border: rgba(17, 24, 39, 0.08);

    --shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
}

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

html, body {
    min-height: 100%;
}

body {
    font-family: "Inter", system-ui, sans-serif;

    background:
        radial-gradient(circle at top, rgba(79, 70, 229, 0.08), transparent 40%),
        var(--bg);

    color: var(--text);

    display: flex;
    flex-direction: column;
}

/* HEADER */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;

    height: 72px;

    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);

    border-bottom: 1px solid var(--border);

    z-index: 100;

    /* IMPORTANT: true edge layout */
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 0 20px; /* edge spacing only */
}

/* LOGO LEFT EDGE */
.logo-wrap {
    display: flex;
    align-items: center;
}

.logo {
    height: 34px;
    width: auto;
    display: block;
}

/* WALLET BUTTON RIGHT EDGE */
.btn-wallet {
    background: linear-gradient(
        145deg,
        #e5e7eb,
        #9ca3af
    );

    color: #111827;

    padding: 10px 18px;
    border-radius: 999px;

    font-size: 14px;
    font-weight: 600;

    border: 1px solid rgba(17, 24, 39, 0.12);

    box-shadow: 0 6px 18px rgba(0,0,0,0.08);

    transition: all 0.25s ease;
}

.btn-wallet:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

/* Primary Button */
.btn-buy {
    background: linear-gradient(
        145deg,
        #e5e7eb,
        #9ca3af
    );

    color: #111827;

    padding: 16px 34px;
    border-radius: 999px;

    font-size: 15px;
    font-weight: 700;

    border: 1px solid rgba(17, 24, 39, 0.12);

    box-shadow: 0 10px 25px rgba(0,0,0,0.10);

    transition: all 0.25s ease;

    cursor: pointer;
}

.btn-buy:hover {
    transform: translateY(-3px);

    box-shadow: 0 14px 35px rgba(0,0,0,0.15);

    background: linear-gradient(
        145deg,
        #f3f4f6,
        #d1d5db
    );
}

/* HERO */
.hero {
    flex: 1;

    display: flex;
    justify-content: center;
    align-items: center;

    padding: 140px 20px 80px;
}

/* CARD */
.hero-card {
    width: 100%;
    max-width: 920px;

    background: var(--card);

    border: 1px solid var(--border);
    border-radius: 28px;

    text-align: center;

    padding: 90px 60px;

    box-shadow: var(--shadow);
}

/* LABEL */
.ticker {
    display: inline-block;

    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1.5px;

    color: var(--muted);

    padding: 8px 14px;

    border: 1px solid var(--border);
    border-radius: 999px;

    background: #f9fafb;

    margin-bottom: 22px;
}

/* TITLE */
.hero-card h1 {
    font-size: clamp(38px, 6vw, 68px);
    line-height: 1.05;

    font-weight: 800;

    margin-bottom: 18px;

    letter-spacing: -0.5px;
}

/* TEXT */
.hero-card p {
    font-size: 18px;
    color: var(--muted);

    margin-bottom: 32px;
}

/* FOOTER */
.site-footer {
    border-top: 1px solid var(--border);

    text-align: center;

    color: var(--muted);

    padding: 22px;

    font-size: 13px;

    background: #fff;
}

/* RESPONSIVE */
@media (max-width: 768px) {

    .header-container {
        padding: 0 16px;
    }

    .hero-card {
        padding: 60px 20px;
        border-radius: 22px;
    }

    .hero-card p {
        font-size: 15px;
    }

    .btn-buy {
        width: 100%;
    }
}