:root {
    --color-black: #000000;
    --color-white: #ffffff;
    --color-gray-50: #f9f9f9;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #eeeeee;
    --color-gray-500: #737373;
    --color-gray-900: #171717;
    --color-brand: #E1306C;
    --gradient-brand: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    --font-main: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    font-family: var(--font-main);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

img {
    max-width: 100%;
    display: block;
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-gray-200);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-gray-500);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-black);
}

.nav-btn {
    background: var(--color-black);
    color: var(--color-white) !important;
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 14px;
}

.nav-btn:hover {
    background: var(--color-gray-500);
}

/* Hero Section */
.hero {
    padding: 120px 20px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-subtitle {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gray-500);
    margin-bottom: 24px;
    display: block;
}

.hero h1 {
    font-size: 64px;
    margin-bottom: 24px;
}

.hero p {
    font-size: 20px;
    color: var(--color-gray-500);
    margin-bottom: 48px;
    max-width: 600px;
    margin-inline: auto;
}

.btn-group {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: inline-block;
}

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

.btn-primary:hover {
    background: var(--color-gray-900);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-black);
    border: 1px solid var(--color-black);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    transform: translateY(-2px);
}

/* Stats Section */
.stats {
    background: var(--color-gray-50);
    padding: 80px 20px;
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item h3 {
    font-size: 48px;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* General Layout */
.section {
    padding: 120px 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-header h2 {
    font-size: 40px;
    margin-bottom: 16px;
}

/* About Box */
.about-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-box p {
    font-size: 18px;
    color: var(--color-gray-500);
    margin-bottom: 24px;
    line-height: 1.8;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--color-gray-50);
    padding: 48px 32px;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    background: var(--color-white);
    border-color: var(--color-gray-200);
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 24px;
    display: inline-block;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--color-gray-500);
    font-size: 15px;
}

/* Visuals */
.showcase-img {
    border-radius: 8px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.1);
    margin: 0 auto;
}

/* Guide Steps */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.guide-step {
    padding: 32px;
    border-top: 2px solid var(--color-black);
}

.guide-num {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-brand);
}

.guide-step h3 {
    font-size: 20px;
    margin-bottom: 12px;
}

.guide-step p {
    font-size: 14px;
    color: var(--color-gray-500);
}

/* FAQ List */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-gray-200);
    padding: 32px 0;
}

.faq-item:first-child {
    border-top: 1px solid var(--color-gray-200);
}

.faq-q {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.faq-a {
    color: var(--color-gray-500);
    font-size: 16px;
    line-height: 1.8;
}

/* Footer */
.footer {
    background: var(--color-gray-50);
    padding: 80px 20px 40px;
    border-top: 1px solid var(--color-gray-200);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-gray-900);
}

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

.footer-copy {
    color: var(--color-gray-500);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 900px) {
    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none;
    }
    .hero h1 {
        font-size: 48px;
    }
    .stats-container {
        grid-template-columns: 1fr;
    }
    .guide-grid {
        grid-template-columns: 1fr;
    }
    .btn-group {
        flex-direction: column;
    }
}