:root {
    --zenya-accent: #20b2aa;
    --zenya-accent-dark: #188f89;
    --zenya-text: #25282d;
    --zenya-muted: #747980;
    --zenya-background: #ffffff;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    color: var(--zenya-text);
    background: var(--zenya-background);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
        Helvetica, Arial, sans-serif;
}

.hero {
    max-width: 44rem;
    margin: 0 auto;
    padding: 80px 1.5rem 0;
    text-align: center;
}

.hero-header {
    width: 100%;
}

.hero-body {
    width: 100%;
    margin-top: 50px;

    display: flex;
    flex-direction: column;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
}

.brand-mark {
    color: var(--zenya-accent);
    font-size: clamp(5rem, 16vw, 9rem);
    font-weight: 800;
    line-height: 0.8;
    letter-spacing: -0.12em;
}

h1 {
    margin: 0;
    font-size: clamp(4rem, 13vw, 7.5rem);
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.07em;
}

.tagline {
    margin: 2.25rem 0 2.75rem;
    color: var(--zenya-muted);
    font-size: clamp(0.9rem, 2vw, 1.15rem);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.add-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 10.5rem;
    padding: 0.95rem 1.6rem;
    color: #ffffff;
    background: var(--zenya-accent);
    border-radius: 0.65rem;
    box-shadow: 0 8px 24px rgb(32 178 170 / 18%);
    font-size: 1rem;
    font-weight: 650;
    text-decoration: none;
    transition: transform 150ms ease, background 150ms ease,
        box-shadow 150ms ease;
}

.add-button:hover {
    background: var(--zenya-accent-dark);
    box-shadow: 0 11px 28px rgb(32 178 170 / 25%);
    transform: translateY(-2px);
}

.add-button:active {
    transform: translateY(0);
}

.add-button:focus-visible {
    outline: 3px solid rgb(32 178 170 / 30%);
    outline-offset: 4px;
}

@media (max-width: 520px) {
    .brand {
        gap: 0.8rem;
    }

    .tagline {
        max-width: 20rem;
        line-height: 1.7;
    }
}

.add-instruction {
    margin: 0 0 1.5rem;
    color: var(--zenya-text);
    font-size: 1.05rem;
    line-height: 1.5;
}

.add-next {
    margin: 1.4rem 0 0;
    color: var(--zenya-muted);
    font-size: 1.05rem;
    line-height: 1.5;
}