:root {
    /* Airbnb Inspired Design Tokens from design.md */
    --palette-bg-primary-core: #ff385c;
    /* Rausch Red */
    --palette-bg-tertiary-core: #e00b41;
    /* Deep Rausch */
    --palette-text-primary: #222222;
    /* Near Black - Warm */
    --palette-text-secondary: #6a6a6a;
    /* Secondary Gray */
    --palette-border: rgba(0, 0, 0, 0.08);

    --bg-white: #ffffff;

    /* Three-layer warm lift shadows */
    --shadow-level-1: rgba(0, 0, 0, 0.02) 0px 0px 0px 1px, rgba(0, 0, 0, 0.04) 0px 2px 6px, rgba(0, 0, 0, 0.1) 0px 4px 8px;
    --shadow-level-2: rgba(0, 0, 0, 0.08) 0px 4px 12px;

    /* Typography */
    --font-main: 'Lexend', 'Inter', -apple-system, system-ui, sans-serif;
    --font-heading: 'Lexend', sans-serif;

    /* Border Radius Scale */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 32px;
    --radius-circle: 50%;
}

/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-white);
    color: var(--palette-text-primary);
    font-family: var(--font-main);
    line-height: 1.43;
}

.container {
    max-width: 1128px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography Hierarchy */
h1 {
    font-size: clamp(40px, 6vw, 84px);
    font-weight: 800;
    line-height: 0.95;
    letter-spacing: -0.04em;
    margin-bottom: 32px;
}

h2 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 22px;
    font-weight: 600;
    line-height: 1.18;
    letter-spacing: -0.02em;
}

p.lead {
    font-size: 20px;
    color: var(--palette-text-secondary);
    line-height: 1.6;
    max-width: 720px;
}

/* Header & Nav */
.header {
    height: 80px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--palette-border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 800;
    color: var(--palette-bg-primary-core);
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.logo-dot {
    width: 10px;
    height: 10px;
    background-color: var(--palette-bg-primary-core);
    border-radius: 50%;
}

.nav {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav a {
    text-decoration: none;
    color: var(--palette-text-primary);
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s;
}

.nav a:hover {
    color: var(--palette-bg-primary-core);
}

.btn-cta-nav {
    background: var(--palette-text-primary);
    color: #fff !important;
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    transition: background 0.2s;
}

.btn-cta-nav:hover {
    background: var(--palette-bg-primary-core);
}

/* Hero Section (Travel-magazine Spacing) */
.hero {
    padding: 120px 0 160px;
}

.accent-text {
    color: var(--palette-bg-primary-core);
}

.hero-actions {
    margin-top: 56px;
    display: flex;
    gap: 16px;
}

.btn-primary {
    background: var(--palette-bg-primary-core);
    color: #fff;
    text-decoration: none;
    padding: 16px 40px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 16px;
    transition: all 0.2s;
}

.btn-primary:hover {
    background: var(--palette-bg-tertiary-core);
    transform: scale(1.02);
}

/* Problem & Need Section */
.section-padding {
    padding: 120px 0;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.pain-item {
    margin-bottom: 48px;
}

.pain-item h3 {
    margin-bottom: 12px;
}

.pain-item p {
    color: var(--palette-text-secondary);
    line-height: 1.6;
}

.mission-box {
    background: #fff;
    padding: 64px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-level-1);
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid var(--palette-border);
}

.mission-label {
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--palette-bg-primary-core);
    margin-bottom: 24px;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 48px;
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--palette-border);
    transition: box-shadow 0.3s;
}

.feature-card:hover {
    box-shadow: var(--shadow-level-2);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 24px;
    display: inline-block;
}

/* Usage Guide (1-2-3) */
.guide-grid {
    display: flex;
    gap: 24px;
}

.guide-item {
    flex: 1;
    padding: 40px;
    position: relative;
}

.guide-step {
    font-size: 13px;
    font-weight: 800;
    color: var(--palette-bg-primary-core);
    margin-bottom: 24px;
}

/* Final CTA */
.cta-banner {
    background: var(--palette-text-primary);
    padding: 100px 48px;
    border-radius: var(--radius-xl);
    text-align: center;
    color: #fff;
}

.cta-banner h2 {
    color: #fff;
    font-size: 48px;
    margin-bottom: 40px;
}

/* Footer */
.footer {
    padding: 80px 0;
    border-top: 1px solid var(--palette-border);
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--palette-text-secondary);
}

.footer a {
    color: inherit;
    text-decoration: none;
    margin-left: 24px;
}

/* Mobile Responsive */
@media (max-width: 768px) {

    .grid-2,
    .features-grid,
    .guide-grid {
        grid-template-columns: 1fr;
        flex-direction: column;
        gap: 40px;
    }

    h1 {
        font-size: 48px;
    }
}