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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #0a0e1a;
    color: #ffffff;
    overflow-x: hidden;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo span {
    color: #ff0000;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: #ffffff;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #ff0000;
}

.cta-button {
    background: #ff0000;
    color: #ffffff;
    padding: 0.7rem 1.5rem;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.cta-button:hover {
    background: #cc0000;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 0, 0, 0.3);
}

.cta-button.secondary {
    background: transparent;
    border: 1px solid #ffffff;
    margin-left: 1rem;
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: none;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 5rem 5% 0rem;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: row;
    gap: 2rem;
    margin-top: 2rem;
    align-items: flex-start;
}

.hero-text h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.hero-text h1 .highlight {
    color: #ff0000;
    font-weight: 700;
}

.hero-text p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #b0b0b0;
    margin-bottom: 2rem;
}

.hero-image {
    position: relative;
    perspective: 1000px;
}

.hero-image img {
    width: 100%;
    height: auto;
    opacity: 0;
    animation: fadeInUp 1s ease forwards 0.3s;
}

/* Features Section */
/* How It Works Benefit Block */
/* How It Works Intro Paragraph */
.how-it-works-intro {
    max-width: 900px;
    margin: 0 auto 2.5rem auto;
    font-size: 1.35rem;
    color: #e0e6f0;
    text-align: center;
    line-height: 1.7;
    font-weight: 400;
}

@media (max-width: 700px) {
    .how-it-works-intro {
        max-width: 98vw;
        font-size: 1.05rem;
        padding: 0 0.5rem;
        margin-bottom: 2rem;
    }
}
/* Section Divider */
.section-divider {
    width: 80%;
    margin: 3rem auto 3rem auto;
    border-top: 2px solid rgba(255, 255, 255, 0.12);
    height: 0;
    background: none;
}
.how-it-works {
    padding: 5rem 5%;
    background: #0a0e1a;
}

/* Technical Data Section */
.how-it-works-container {
    max-width: 1400px;
    margin: 0 auto;
}

.how-it-works h2 {
    text-align: center;
    font-size: 5rem;
    margin-bottom: 3rem;
    font-weight: 300;
    color: #d6e0ee;
}

.how-it-works-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.diagram {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    max-width: 480px;
    margin: 0 auto 2rem auto;
}

.diagram img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}

.placeholder-box {
    width: 100%;
    aspect-ratio: 1;
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.1) 0%, rgba(255, 0, 0, 0.05) 100%);
    border: 2px dashed rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: #666;
    border-radius: 8px;

/* Responsive system diagram image */
.diagram-placeholder img {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    aspect-ratio: 1 / 1;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}
}

.how-it-works-text {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    background: rgba(255, 255, 255, 0.02);
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-left: 3px solid #ff0000;
    border-radius: 4px;
    transition: all 0.3s;
}

.step:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
}

.step h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: #ffffff;
    font-weight: 600;
}

.step p {
    color: #b0b0b0;
    line-height: 1.6;
    font-size: 0.95rem;
}

.architecture {
    background: rgba(255, 0, 0, 0.05);
    padding: 2rem;
    border: 1px solid rgba(255, 0, 0, 0.2);
    border-radius: 4px;
    margin-top: 1rem;
}

.architecture h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: #ffffff;
    font-weight: 600;
}

.architecture p {
    color: #b0b0b0;
    line-height: 1.7;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.architecture p:last-child {
    margin-bottom: 0;
}

/* Pre-order Section */
.preorder {
    padding: 5rem 5%;
    background: linear-gradient(180deg, #1a2332 0%, #0f1621 100%);
    text-align: center;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.preorder-container {
    max-width: 1400px;
    margin: 0 auto;
}

.preorder h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.preorder p {
    color: #b0b0b0;
    line-height: 1.6;
}

.pricing-card {
    max-width: 450px;
    margin: 0 auto;
    background: #ffffff;
    color: #000000;
    padding: 3rem 2.5rem;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.early-bird-badge {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: #666;
    margin-bottom: 1rem;
}

.price {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #000;
}

.features-list {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
}

.features-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #e0e0e0;
    color: #333;
    font-size: 0.95rem;
}

.features-list li:last-child {
    border-bottom: none;
}

.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.waitlist-form .form-input {
    padding: 1rem;
    background: #f5f5f5;
    border: 1px solid #d0d0d0;
    color: #000;
    font-size: 0.95rem;
    border-radius: 4px;
}

.waitlist-form .form-input:focus {
    outline: none;
    border-color: #000;
    background: #ffffff;
}

.waitlist-form .form-input::placeholder {
    color: #999;
}

.join-waitlist-btn {
    padding: 1rem;
    background: #000000;
    color: #ffffff;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s;
    border-radius: 4px;
}

.join-waitlist-btn:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.disclaimer {
    font-size: 0.8rem;
    color: #666;
    margin-top: 0.5rem;
    line-height: 1.4;
}

.form-input {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: #ff0000;
    background: rgba(255, 255, 255, 0.08);
}

.form-input::placeholder {
    color: #666;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
}

.form-message.success {
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid rgba(0, 255, 0, 0.3);
    color: #00ff00;
}

.form-message.error {
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid rgba(255, 0, 0, 0.3);
    color: #ff6b6b;
}

/* Footer */
footer {
    padding: 3rem 5%;
    background: #050810;
    text-align: center;
    color: #666;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

/* Responsive */
@media (max-width: 968px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 26, 0.98);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s;
    }

    .nav-links.active {
        right: 0;
    }

    .hero-content {
        flex-direction: column;
        gap: 2rem;
    }
    .hero-text {
        order: 1;
        width: 100%;
    }
    .hero-image {
        order: 2;
        width: 100%;
        margin-top: 1rem;
        display: flex;
        justify-content: center;
    }

    .hero-text h1 {
        font-size: 2.5rem;
    }

    .how-it-works-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .diagram-placeholder {
        min-height: 300px;
    }

    .placeholder-box {
        aspect-ratio: 16 / 9;
    }

    .tech-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .tech-value {
        text-align: left;
    }

    /* Mobile: stack tech-data columns and tighten spacing */
    .tech-data {
        grid-template-columns: 1fr;
        padding: 3rem 4%;
        gap: 1rem;
    }

    .tech-grid {
        max-width: 100%;
        margin: 0 auto;
    }

    .tech-row {
        padding: 0.9rem 1rem;
        border-bottom-width: 1px;
    }

    .tech-label {
        font-size: 0.92rem;
    }

    .tech-value {
        font-size: 0.96rem;
        text-align: left;
        margin-top: 0.25rem;
        color: #dfe8f5;
        font-weight: 600;
    }

    .compatibility {
        margin: 1.5rem 0 0;
        padding: 1.5rem;
    }

    .brands {
        gap: 1rem;
        font-size: 1rem;
    }

    .how-it-works h2 {
        text-align: center;
        font-size: 2rem;
        margin-bottom: 3rem;
        font-weight: 300;
        color: #d6e0ee;
    }
}