.ysir-home {
    --ysir-primary: #1f6f7a;
    --ysir-primary-dark: #174f58;
    --ysir-accent: #f2a541;
    --ysir-bg: #f6f8f7;
    --ysir-text: #24333a;
    --ysir-muted: #667780;
    color: var(--ysir-text);
    background: #ffffff;
    font-family: Arial, sans-serif;
}

.ysir-topbar {
    align-items: center;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid #dfe8e6;
    display: flex;
    justify-content: space-between;
    padding: 18px clamp(20px, 5vw, 72px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.ysir-logo,
.ysir-nav a,
.ysir-button {
    text-decoration: none;
}

.ysir-logo {
    align-items: center;
    color: var(--ysir-primary-dark);
    display: inline-flex;
    font-weight: 700;
    gap: 10px;
}

.ysir-logo-mark {
    align-items: center;
    background: var(--ysir-accent);
    border-radius: 12px;
    color: #fffaf0;
    display: inline-flex;
    height: 38px;
    justify-content: center;
    width: 38px;
}

.ysir-nav {
    display: flex;
    gap: 26px;
}

.ysir-nav a {
    color: var(--ysir-text);
    font-weight: 600;
}

.ysir-menu-toggle {
    background: var(--ysir-primary);
    border: 0;
    border-radius: 999px;
    color: #ffffff;
    cursor: pointer;
    display: none;
    padding: 10px 18px;
}

.ysir-hero {
    background: linear-gradient(135deg, #e8f2f0 0%, #ffffff 58%, #fff4df 100%);
    display: grid;
    gap: 36px;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    padding: clamp(54px, 8vw, 110px) clamp(20px, 5vw, 72px);
}

.ysir-hero h1 {
    color: var(--ysir-primary-dark);
    font-size: clamp(36px, 5vw, 68px);
    line-height: 1.04;
    margin: 12px 0 20px;
    max-width: 820px;
}

.ysir-hero p {
    color: var(--ysir-muted);
    font-size: 18px;
    max-width: 680px;
}

.ysir-eyebrow {
    color: var(--ysir-primary);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.14em;
    margin: 0 0 10px;
    text-transform: uppercase;
}

.ysir-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-top: 30px;
}

.ysir-button {
    border-radius: 999px;
    display: inline-flex;
    font-weight: 700;
    justify-content: center;
    padding: 13px 22px;
}

.ysir-button-primary {
    background: var(--ysir-primary);
    color: #ffffff;
}

.ysir-button-secondary {
    background: #ffffff;
    border: 1px solid #b8cdca;
    color: var(--ysir-primary-dark);
}

.ysir-hero-panel {
    align-self: center;
    background: #ffffff;
    border: 1px solid #d8e6e4;
    border-radius: 28px;
    box-shadow: 0 24px 70px rgba(31, 111, 122, 0.14);
    display: grid;
    gap: 16px;
    padding: 34px;
}

.ysir-hero-panel span,
.ysir-hero-panel small {
    color: var(--ysir-muted);
}

.ysir-hero-panel strong {
    color: var(--ysir-primary-dark);
    font-size: 34px;
}

.ysir-section {
    padding: clamp(48px, 7vw, 88px) clamp(20px, 5vw, 72px);
}

.ysir-section h2 {
    color: var(--ysir-primary-dark);
    font-size: clamp(28px, 3vw, 44px);
    margin: 0 0 28px;
}

.ysir-soft {
    background: var(--ysir-bg);
}

.ysir-grid {
    display: grid;
    gap: 22px;
}

.ysir-grid-three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.ysir-grid-four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.ysir-card {
    background: #ffffff;
    border: 1px solid #dfe8e6;
    border-radius: 22px;
    padding: 26px;
}

.ysir-card h3 {
    color: var(--ysir-primary-dark);
    margin: 0 0 12px;
}

.ysir-card p,
.ysir-about p,
.ysir-contact p {
    color: var(--ysir-muted);
    line-height: 1.7;
}

.ysir-about,
.ysir-contact {
    align-items: center;
    display: grid;
    gap: 30px;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

.ysir-contact {
    background: #edf6f4;
    grid-template-columns: minmax(0, 1fr) auto;
}

@media (max-width: 900px) {
    .ysir-menu-toggle {
        display: inline-flex;
    }

    .ysir-nav {
        background: #ffffff;
        border: 1px solid #dfe8e6;
        border-radius: 18px;
        box-shadow: 0 18px 40px rgba(31, 111, 122, 0.12);
        display: none;
        flex-direction: column;
        gap: 14px;
        padding: 18px;
        position: absolute;
        right: 20px;
        top: 72px;
        width: min(260px, calc(100vw - 40px));
    }

    .ysir-nav.ysir-is-open {
        display: flex;
    }

    .ysir-hero,
    .ysir-about,
    .ysir-contact {
        grid-template-columns: 1fr;
    }

    .ysir-grid-three,
    .ysir-grid-four {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .ysir-topbar {
        padding: 14px 18px;
    }

    .ysir-grid-three,
    .ysir-grid-four {
        grid-template-columns: 1fr;
    }

    .ysir-hero-actions,
    .ysir-button {
        width: 100%;
    }
}