:root {
    --primary: #1a3a5f;
    --primary-light: #2c5282;
    --secondary: #e2e8f0;
    --accent: #d4af37;
    /* Metallic Gold for premium feel */
    --accent-glow: rgba(212, 175, 55, 0.4);
    --text: #1a202c;
    --text-muted: #4a5568;
    --bg: #ffffff;
    --bg-alt: #f8fafc;
    --white: #ffffff;
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --max-width: 1200px;
    --section-padding: 100px 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text);
    background-color: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.2;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.btn-accent {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-accent:hover {
    background: #c5a028;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(212, 175, 55, 0.3);
}

section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary);
}

.section-title p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

/* Scroll Animation classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 20px;
    }

    .section-title h2 {
        font-size: 2rem;
    }
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 10px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 40px;
}

.logo span {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    color: var(--text);
}

.nav-links a:not(.btn):hover {
    color: var(--primary);
}

/* Hero */
#hero {
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    background: url('https://images.unsplash.com/photo-1576091160550-2173dba999ef?ixlib=rb-1.2.1&auto=format&fit=crop&w=1950&q=80') center/cover no-repeat;
    position: relative;
    color: var(--white);
    padding: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 58, 95, 0.85) 0%, rgba(10, 25, 41, 0.7) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 30px;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 700px;
}

.hero-btns {
    display: flex;
    gap: 20px;
}

.btn-outline {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 600;
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--primary);
}

/* Problems */
.bg-alt {
    background-color: var(--bg-alt);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.problem-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border-bottom: 4px solid transparent;
}

.problem-card:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--accent);
}

.problem-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.problem-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--primary);
}

.problem-card p {
    color: var(--text-muted);
}

/* Benefits */
.benefit-list {
    max-width: 800px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
    align-items: flex-start;
}

.benefit-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary);
    line-height: 1;
    font-family: 'Inter', sans-serif;
}

.benefit-text h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.benefit-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* CTA Section */
#cta {
    background: var(--primary);
    color: var(--white);
    padding: 120px 20px;
}

.cta-box {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: 3rem;
    margin-bottom: 30px;
}

.cta-box p {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-actions {
    margin-bottom: 20px;
}

.disclaimer {
    font-size: 0.9rem !important;
    opacity: 0.6;
}

/* Footer */
footer {
    padding: 60px 20px;
    background: #0a1929;
    color: rgba(255, 255, 255, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 30px;
}

.footer-links a:hover {
    color: var(--white);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        /* Simplification for small screens */
    }

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

    .hero-content p {
        font-size: 1.1rem;
    }

    .hero-btns {
        flex-direction: column;
    }

    .benefit-item {
        flex-direction: column;
        gap: 15px;
    }

    .cta-box h2 {
        font-size: 2rem;
    }
}