* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

body {
    background: linear-gradient(180deg, #040b18, #01050d);
    color: #e1ecf7;
    overflow-x: hidden;
}

/* HEADER */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(3, 8, 18, 0.95);
    border-bottom: 1px solid #4aa3ff;
    padding: 20px 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: #4aa3ff;
    font-size: 22px;
    letter-spacing: 1px;
}

nav a {
    color: #dfefff;
    text-decoration: none;
    margin-left: 25px;
    font-size: 14px;
}

nav a:hover {
    color: #4aa3ff;
}

/* PAGE WRAPPER */
.page {
    padding-top: 120px;
    animation: pageIn 0.6s ease;
}

@keyframes pageIn {
    from {
        opacity: 0;
        transform: translateY(25px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* HERO */
.hero {
    min-height: 85vh;
    text-align: center;
    padding-top: 80px;
}

.hero h1 {
    color: #4aa3ff;
    font-size: 54px;
    margin-top: 40px;
}

.hero p {
    max-width: 800px;
    margin: 25px auto;
    line-height: 1.9;
    font-size: 18px;
}

/* DIAMOND */
.diamond-box {
    display: flex;
    justify-content: center;
}

.diamond-box img {
    width: 140px;
    animation: diamondRotate 14s linear infinite;
    filter: drop-shadow(0 0 30px rgba(74,163,255,0.8));
}

@keyframes diamondRotate {
    from { transform: rotateY(0deg); }
    to   { transform: rotateY(360deg); }
}

/* CONTENT */
.section {
    max-width: 1100px;
    margin: auto;
    padding: 90px 60px;
}

.section.dark {
    background: rgba(255,255,255,0.03);
}

.section h2 {
    color: #4aa3ff;
    font-size: 32px;
    margin-bottom: 35px;
}

.section p {
    line-height: 1.9;
    margin-bottom: 22px;
}

/* LIST */
.section ul li {
    margin-bottom: 12px;
    line-height: 1.7;
}

/* FOOTER */
footer {
    background: rgba(0,0,0,0.9);
    border-top: 1px solid #4aa3ff;
    text-align: center;
    padding: 30px;
    font-size: 13px;
}