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

:root {
    --accent-h: 270;
    --accent-s: 65%;
    --accent-light-label: 65%;
    --accent-light-divider: 50%;
}

body {
    background: #111;
    color: rgba(255,255,255,0.9);
    font-family: 'Helvetica Neue', Arial, sans-serif;
    min-height: 100vh;
}

#logo {
    position: fixed;
    top: 28px;
    left: 32px;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
}

#back {
    position: fixed;
    top: 22px;
    right: 32px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(255,255,255,0.55);
    text-decoration: none;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 30px;
    padding: 8px 18px;
    transition: background 0.3s;
}

#back:hover { background: rgba(255,255,255,0.12); }

.card-number {
    position: fixed;
    bottom: 30px;
    right: 40px;
    font-size: 120px;
    font-weight: 700;
    letter-spacing: -4px;
    color: rgba(255,255,255,0.04);
    pointer-events: none;
    user-select: none;
}

.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 120px 40px 80px;
}

.tag {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: hsl(var(--accent-h), var(--accent-s), var(--accent-light-label));
    margin-bottom: 20px;
}

h1 {
    font-size: 56px;
    font-weight: 700;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 48px;
}

.divider {
    width: 48px;
    height: 2px;
    background: hsl(var(--accent-h), var(--accent-s), var(--accent-light-divider));
    margin-bottom: 48px;
}

.content {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
}

/* card1 */
.content-headline {
    font-size: 22px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    line-height: 1.5;
    margin-bottom: 28px;
}

/* card2, 3, 4 */
.vision-block {
    margin-bottom: 48px;
}

.vision-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: hsl(var(--accent-h), var(--accent-s), var(--accent-light-label));
    margin-bottom: 12px;
}

.vision-headline {
    font-size: 20px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    line-height: 1.4;
    margin-bottom: 16px;
}

/* card5, 6 */
.section-block {
    margin-bottom: 48px;
}

.section-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: hsl(var(--accent-h), var(--accent-s), var(--accent-light-label));
    margin-bottom: 12px;
}

.section-headline {
    font-size: 20px;
    font-weight: 700;
    color: rgba(255,255,255,0.9);
    line-height: 1.4;
    margin-bottom: 16px;
}

/* ── Responsive ── */

@media (max-width: 768px) {
    #logo {
        top: 20px;
        left: 20px;
        font-size: 13px;
        letter-spacing: 2px;
    }

    #back {
        top: 14px;
        right: 20px;
        font-size: 11px;
        padding: 6px 14px;
    }

    .card-number {
        font-size: 72px;
        bottom: 16px;
        right: 20px;
        letter-spacing: -2px;
    }

    .container {
        padding: 88px 24px 64px;
    }

    h1 {
        font-size: 36px;
        margin-bottom: 32px;
    }

    .divider {
        margin-bottom: 32px;
    }

    .content {
        font-size: 15px;
    }

    .content-headline {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .vision-block {
        margin-bottom: 36px;
    }

    .vision-headline {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .section-block {
        margin-bottom: 36px;
    }

    .section-headline {
        font-size: 17px;
        margin-bottom: 12px;
    }
}

@media (max-width: 480px) {
    #logo {
        font-size: 12px;
        letter-spacing: 1.5px;
    }

    #back {
        font-size: 10px;
        padding: 5px 12px;
    }

    .card-number {
        font-size: 56px;
    }

    .container {
        padding: 80px 20px 56px;
    }

    h1 {
        font-size: 30px;
        letter-spacing: -0.5px;
    }

    .content {
        font-size: 14px;
        line-height: 1.75;
    }

    .content-headline {
        font-size: 16px;
    }

    .vision-headline,
    .section-headline {
        font-size: 15px;
    }
}