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

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: #0b1a1f;
    color: #e3f0f5;
    overflow-x: hidden;
    line-height: 1.6;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.ocean-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(ellipse at 30% 40%, #0f2a33, #051015);
}

.ocean-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 20%, rgba(0,200,255,0.06), transparent 50%),
                radial-gradient(circle at 20% 80%, rgba(0,255,200,0.04), transparent 40%);
}

.bubbles {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.bubble {
    position: absolute;
    bottom: -80px;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.25), rgba(0,200,255,0.05));
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.08);
    animation: rise linear infinite;
}

.bubble:nth-child(1) { width: 18px; height: 18px; left: 10%; animation-duration: 12s; }
.bubble:nth-child(2) { width: 30px; height: 30px; left: 25%; animation-duration: 16s; animation-delay: 2s; }
.bubble:nth-child(3) { width: 12px; height: 12px; left: 45%; animation-duration: 10s; animation-delay: 4s; }
.bubble:nth-child(4) { width: 40px; height: 40px; left: 65%; animation-duration: 20s; animation-delay: 1s; }
.bubble:nth-child(5) { width: 22px; height: 22px; left: 80%; animation-duration: 14s; animation-delay: 3s; }
.bubble:nth-child(6) { width: 14px; height: 14px; left: 90%; animation-duration: 11s; animation-delay: 5s; }
.bubble:nth-child(7) { width: 50px; height: 50px; left: 5%; animation-duration: 24s; animation-delay: 0.5s; }
.bubble:nth-child(8) { width: 28px; height: 28px; left: 55%; animation-duration: 18s; animation-delay: 2.5s; }

@keyframes rise {
    0% { transform: translateY(0) scale(0.8); opacity: 0.4; }
    50% { opacity: 0.9; }
    100% { transform: translateY(-110vh) scale(1.2); opacity: 0; }
}

.waves {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
    z-index: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C300,120 600,0 900,60 C1050,90 1150,70 1200,60 L1200,120 L0,120Z' fill='rgba(0,180,255,0.05)'/%3E%3C/svg%3E") repeat-x bottom;
    background-size: 1200px 120px;
    animation: waveMove 12s linear infinite;
    opacity: 0.5;
}

.waves::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,80 C300,20 600,100 900,80 C1050,60 1150,80 1200,80 L1200,120 L0,120Z' fill='rgba(0,220,255,0.04)'/%3E%3C/svg%3E") repeat-x bottom;
    background-size: 1200px 120px;
    animation: waveMove 18s linear infinite reverse;
    opacity: 0.6;
}

@keyframes waveMove {
    0% { transform: translateX(0); }
    100% { transform: translateX(-1200px); }
}

.glass-card {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: 32px;
    padding: 40px 35px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-4px);
}

.section {
    padding: 90px 0;
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3.4rem);
    font-weight: 700;
    background: linear-gradient(135deg, #6dd5fa, #a8e6ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.section-sub {
    font-size: 1.15rem;
    color: rgba(255,255,255,0.6);
    max-width: 600px;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 0;
}

.hero .glass-card {
    padding: 60px 40px;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: clamp(2.6rem, 6vw, 4.8rem);
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff, #7fd8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .tagline {
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    color: rgba(255,255,255,0.75);
    margin: 20px 0 30px;
    font-weight: 300;
}

.badge-rustore {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 60px;
    padding: 10px 28px;
    font-size: 1rem;
    color: #b0e0ff;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(79,195,255,0.08);
    border: 1px solid rgba(79,195,255,0.12);
    border-radius: 40px;
    padding: 8px 20px;
    font-size: 0.9rem;
    color: #a8e6ff;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #1a8cff, #0066cc);
    border: none;
    border-radius: 60px;
    padding: 16px 36px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 8px 30px rgba(0,100,255,0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0,100,255,0.4);
}

.btn-store{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: linear-gradient(135deg, #1a8cff, #0066cc);
    border: none;
    border-radius: 60px;
    padding: 10px 36px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #fff;
    cursor: pointer;
    transition: 0.3s;
    box-shadow: 0 8px 30px rgba(0,100,255,0.25);
}
.btn-store:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0,100,255,0.4);
}
.calc-input {
    width: 100%;
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.04);
    color: #fff;
    font-size: 1rem;
    outline: none;
}

.calc-input:focus {
    border-color: rgba(79,195,255,0.4);
    background: rgba(255,255,255,0.07);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(11,26,31,0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    padding: 12px 0;
}

.navbar.scrolled {
    background: rgba(11,26,31,0.92);
    box-shadow: 0 8px 40px rgba(0,0,0,0.4);
    padding: 8px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}

.nav-logo i {
    font-size: 1.5rem;
    color: #4fc3ff;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: block;
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.5);
    transition: 0.3s;
    cursor: pointer;
}

.nav-link:hover {
    color: rgba(255,255,255,0.85);
    background: rgba(79,195,255,0.08);
}

.nav-link.active {
    color: #4fc3ff;
    background: rgba(79,195,255,0.12);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px 8px;
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: rgba(11,26,31,0.95);
        backdrop-filter: blur(20px);
        padding: 16px 20px 24px;
        gap: 4px;
        border-bottom: 1px solid rgba(255,255,255,0.05);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: 0.35s cubic-bezier(0.4,0,0.2,1);
    }

    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: all;
    }

    .nav-link {
        padding: 12px 18px;
        width: 100%;
        text-align: center;
        font-size: 1rem;
    }

    .glass-card {
        padding: 28px 20px;
    }

    .hero .glass-card {
        padding: 40px 24px;
    }

    .section {
        padding: 60px 0;
    }

    .waves {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .nav-logo span {
        font-size: 1rem;
    }
    .nav-logo i {
        font-size: 1.2rem;
    }
}