:root {
    --bg-light-blue: #eef4ff;
    --bg-alice: #f7faff;
    --bg-dark: #2b3445;
    --text-primary: #1a1f36;
    --text-secondary: #5b6478;
    --text-muted: rgba(255, 255, 255, 0.7);
    --white: #ffffff;
    --pink: #ff6b9d;
    --silver: #9aa3b2;
    --blue: #4f7cff;
    --border: #e4e9f2;
    --shadow: 0 18px 50px rgba(26, 31, 54, 0.08);
    --radius: 16px;
    --max-width: 1120px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text-primary);
    background: var(--white);
    line-height: 1.6;
}

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

.container {
    width: min(100% - 48px, var(--max-width));
    margin: 0 auto;
}

.main {
    overflow: hidden;
}

.navigation-bar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.nav-wrapper {
    width: min(100% - 48px, var(--max-width));
    margin: 0 auto;
    min-height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-logo-text {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.nav-menu {
    display: flex;
    align-items: center;
}

.nav-button-wrapper {
    display: flex;
    gap: 12px;
}

.nav-button-secondary,
.nav-button-primary,
.button-secondary,
.button-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-button-secondary,
.button-secondary {
    border: 1px solid var(--border);
    background: var(--white);
}

.nav-button-primary,
.button-primary {
    background: var(--text-primary);
    color: var(--white);
    box-shadow: 0 10px 24px rgba(26, 31, 54, 0.18);
}

.nav-button-primary:hover,
.button-primary:hover,
.nav-button-secondary:hover,
.button-secondary:hover {
    transform: translateY(-1px);
}

.menu-button {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--white);
    padding: 0;
    cursor: pointer;
}

.menu-button span {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    background: var(--text-primary);
}

.hero-section {
    background: linear-gradient(180deg, var(--bg-light-blue) 0%, #f8fbff 100%);
    padding: 72px 0 96px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
}

.hero-copy h1 {
    margin: 0 0 20px;
    font-size: clamp(2.4rem, 5vw, 3.8rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero-paragraph {
    margin: 0;
    max-width: 520px;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.hero-cards {
    position: relative;
    min-height: 420px;
}

.hero-card {
    position: absolute;
    width: min(100%, 360px);
    padding: 22px;
    border-radius: var(--radius);
    background: var(--white);
    box-shadow: var(--shadow);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.hero-card.first-card {
    top: 0;
    right: 12%;
    transform: rotate(-2deg);
}

.hero-card.second-card {
    top: 120px;
    left: 0;
    transform: rotate(2deg);
}

.hero-card.third-card {
    bottom: 0;
    right: 0;
    transform: rotate(-1deg);
}

.hero-card-top {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
}

.hero-card-heading {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.45;
}

.hero-badge {
    flex-shrink: 0;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--white);
}

.hero-badge.pink { background: var(--pink); }
.hero-badge.silver { background: var(--silver); }
.hero-badge.blue { background: var(--blue); }

.hero-card-meta {
    margin-top: 18px;
}

.hero-card-reward {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.hero-status-bar {
    height: 8px;
    border-radius: 999px;
    background: #edf1f7;
    overflow: hidden;
}

.hero-status-bar .fill {
    display: block;
    height: 100%;
    border-radius: inherit;
}

.hero-status-bar .fill.pink { background: var(--pink); }
.hero-status-bar .fill.silver { background: var(--silver); }
.hero-status-bar .fill.blue { background: var(--blue); }

.section {
    padding: 88px 0;
}

.section-label {
    margin: 0 0 12px;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--blue);
}

.section h2 {
    margin: 0 0 40px;
    font-size: clamp(1.9rem, 3vw, 2.6rem);
    letter-spacing: -0.03em;
}

.logos-section {
    padding-top: 0;
}

.client-logo-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.client-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 72px;
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text-secondary);
    font-weight: 600;
    background: #fbfcfe;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.benefit-card {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
}

.benefit-icon {
    width: 44px;
    height: 44px;
    display: grid;
    place-items: center;
    margin-bottom: 18px;
    border-radius: 12px;
    background: var(--bg-light-blue);
    font-size: 1.1rem;
}

.benefit-card h3 {
    margin: 0 0 10px;
    font-size: 1.05rem;
}

.benefit-card p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.96rem;
}

.participants-section {
    background: var(--bg-alice);
}

.participants-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 48px;
    align-items: center;
}

.participants-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 22px;
}

.participants-list li {
    display: grid;
    gap: 6px;
}

.participants-list strong {
    font-size: 1rem;
}

.participants-list span {
    color: var(--text-secondary);
}

.participants-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    width: min(100%, 420px);
    padding: 28px;
    border-radius: 24px;
    background: linear-gradient(145deg, #ffffff 0%, #eef4ff 100%);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.visual-title {
    margin: 0 0 18px;
    font-weight: 700;
}

.visual-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
}

.visual-row strong {
    color: var(--text-primary);
}

.cta-section {
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-light-blue) 100%);
}

.cta-inner {
    text-align: center;
}

.cta-inner h2 {
    margin-bottom: 12px;
}

.cta-paragraph {
    margin: 0 auto 28px;
    max-width: 560px;
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.footer {
    background: var(--bg-dark);
    color: var(--text-muted);
    padding: 28px 0;
}

.footer p {
    margin: 0;
    font-size: 0.92rem;
}

@media (max-width: 991px) {
    .hero-grid,
    .participants-grid,
    .benefits-grid,
    .client-logo-grid {
        grid-template-columns: 1fr 1fr;
    }

    .hero-cards {
        min-height: 360px;
        margin-top: 12px;
    }

    .hero-card.first-card {
        right: 0;
    }
}

@media (max-width: 767px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        padding: 16px 24px 24px;
        background: var(--white);
        border-bottom: 1px solid var(--border);
    }

    .nav-menu.is-open {
        display: block;
    }

    .nav-button-wrapper {
        flex-direction: column;
    }

    .menu-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .hero-section {
        padding: 56px 0 72px;
    }

    .hero-grid,
    .benefits-grid,
    .client-logo-grid,
    .participants-grid {
        grid-template-columns: 1fr;
    }

    .hero-cards {
        position: static;
        min-height: auto;
        display: grid;
        gap: 16px;
    }

    .hero-card {
        position: static;
        width: 100%;
        transform: none !important;
    }

    .section {
        padding: 64px 0;
    }
}